JP7245689B2 - PIPE CONVEYING DEVICE AND METHOD FOR JOINING PIPE IN PIPE ROAD - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe conveying device and a method for joining pipes using the pipe conveying device, which is used when pipes are jointed to form a pipeline in a pipeline tunnel formed underground by, for example, a shield tunneling machine.

Conventionally, as shown in FIGS. 51 and 52, for example, as shown in FIGS. There are some that are used. The pipe conveying device 205 can freely travel on rails 206 in the pipe laying pit 201, and includes a first conveying carriage 207 that conveys the first pipe 203, a second conveying carriage 208 that conveys the second pipe 204, It has a connecting bar 209 that connects the first carriage 207 and the second carriage 208 . One end of the connecting bar 209 and the first carriage 207 are detachably connected via a first connecting pin 211 , and the other end of the connecting bar 209 and the second carriage 208 are connected via a second connecting pin 212 . are detachably connected.

Using such a pipe conveying device 205, pipes are joined as follows.

First, as shown in FIG. 52, the first pipe 203 is placed on the first carrier 207, and the second pipe 204 is placed on the second carrier 208. stop on the near side of the tube 202 of the .

Next, the first connection pin 211 is removed to release the connection between the connection bar 209 and the first carriage 207, and the second connection pin 212 is removed to release the connection between the connection bar 209 and the second carriage 208. , the connecting bar 209 is removed to separate the first carriage 207 and the second carriage 208 .

After that, the first carriage 207 is advanced to join one end of the first pipe 203 to the other end of the last pipe 202 .

Thereafter, as shown in FIG. 53 , a pillow member 214 is installed below the first pipe 203 , the first pipe 203 is placed on the pillow member 214 , and the first carriage 207 is moved backward to move the first pipe 203 downward. from the front side of the first pipe 203 .

The first carriage 207 extracted in this manner is lifted up and collected into the second pipe 204 placed on the second carriage 208 .

Thereafter, as shown in FIG. 54, the second carriage 208 is moved forward to move one end of the second pipe 204 on the second carriage 208 to the other end of the first pipe 203 joined to the last pipe 202. Join to the ends.

Incidentally, the pipe conveying device and the method for joining pipes as described above are described, for example, in Patent Document 1 below.

JP 2001-280541

However, in the above-described conventional method, when the first pipe 203 is placed on the first carriage 207 and the second pipe 204 is placed on the second carriage 208, the connecting bar 209 does not allow the first and second pipes 203, 203, It is hidden under 204. Since the space below the first pipe 203 and the space below the second pipe 204 are very narrow, when the first connecting pin 211 is removed to disconnect the connecting bar 209 and the first carriage 207, the first It is difficult to remove the first connecting pin 211 because the pipe 203 is in the way. Alternatively, when the second connecting pin 212 is removed to release the connection between the connecting bar 209 and the second carriage 208 , the second pipe 204 becomes an obstacle, making it difficult to remove the second connecting pin 212 .

For this reason, there is a problem that the work of removing the connecting bar 209 to separate the first carriage 207 and the second carriage 208 requires time and effort.

The present invention provides a pipe conveying device and a method for joining pipes in a pipe laying pit that can reduce the time and effort required to separate the first and second conveying carriages by removing connecting members. intended to

In order to achieve the above object, the first invention is a pipe conveying device for conveying pipes,
a first carriage that conveys the first pipe, a second carriage that conveys the second pipe, and a coupling device that connects the first carriage and the second carriage,
The connecting device has a connecting member, one end of which is detachable from the first carriage and the other end of which is detachable from the second carriage,
An engaging member is provided at an end portion of the connecting member and is capable of being engaged/disengaged with either one of the first carrier and the second carrier,
The engaging member is switchable between an engaged state in which it engages with one of the carriages and a disengaged state in which it disengages from one of the carriages,
A switching device for switching the engaging member from the engaged state to the disengaged state is provided on the connecting member,
The switching device has an operation part for operating the switching device from the outside,
The operating part is exposed in a space formed between the first pipe placed on the first carriage and the second pipe placed on the second carriage.

According to this, by operating the operating portion to operate the switching device, the engaging member is switched from the engaged state to the disengaged state by the switching device, so that either one of the first carriage and the second carriage is switched. The connection between the carriage and the connection member is released. At this time, since the operation part can be operated without interfering with the first pipe and the second pipe, the space below the first pipe placed on the first carriage is narrow, or the space under the second carriage is narrow. Even if the space below the second pipe placed thereon is narrow, the connection between one of the carriages and the connection member can be easily released by operating the operation part. As a result, it is possible to reduce the time and effort required for the work of removing the connecting member to separate the first and second carriages.

The tube conveying device according to the second aspect of the present invention is switched to the disengaged state by dropping the engaging member from the engaged state.

According to this, since the engaging member can be switched from the engaged state to the disengaged state without using a special drive device such as an electric motor or a hydraulic cylinder, power consumption can be reduced.

In the pipe conveying apparatus of the third aspect of the present invention, one conveying carriage is provided with a biasing member that biases the engaging member from the engaged state to the disengaged state.

According to this, by operating the operating portion, the engaging member is reliably switched from the engaged state to the disengaged state by the biasing force of the biasing member.

In the pipe conveying device according to the fourth aspect of the present invention, the connecting member can be divided into a first connecting member and a second connecting member,
The first connecting member is detachably connected to the first carriage,
an engaging member and a switching device are provided on the second coupling member;
The engaging member can be switched between an engaged state in which it engages with the second carriage and a disengaged state in which it disengages from the second carriage.

According to this, by operating the operating portion to operate the switching device, the engaging member is switched from the engaged state to the disengaged state by the switching device, and the connection between the second carriage and the connecting member is easily released. be.

The fifth invention uses the pipe conveying device according to any one of the first invention to the fourth invention to attach the first pipe and the second pipe to the last pipe of the pipeline in the pipeline construction pit. A pipe joining method for joining the
placing the first pipe on the first carriage of the pipe conveying device that can freely travel on the rail in the pipe laying pit and placing the second pipe on the second carriage;
advancing the tube conveying device to join one end of the first tube to the other end of the last tube;
The other end of the first pipe is lifted, the pipe conveying device is moved backward, and the first conveying carriage is extracted from below the first pipe to the front side of the first pipe,
Detach one end of the connecting member from the first carriage,
By operating the operation part, the switching device is operated, the engaging member is switched from the engaged state to the disengaged state, the other end of the connecting member is disengaged from the second carriage, and the connecting member is separated from the first carriage and the second carriage. Remove from between the carrier and separate the first carrier and the second carrier,
The first carrier is moved backward to draw it below the second pipe placed on the second carrier,
The second carrier is moved forward together with the first carrier, and one end of the second pipe on the second carrier is joined to the other end of the first pipe joined to the last pipe.

According to this, after the first pipe is joined to the rearmost pipe, the pipe conveying device is moved backward to extract the first carriage from below the first pipe to the front side of the first pipe, and then the connection member is connected. Since the one end is detached from the first carriage, the one end of the connecting member and the first carriage can be separated without interfering with the first pipe.

After that, the operation part is operated to operate the switching device, the engaging member is switched from the engaged state to the disengaged state, and the other end of the connecting member is disengaged from the second carriage. The other end portion of the connecting member and the second carriage can be easily separated from each other.

The sixth invention uses the pipe conveying device according to any one of the first to fourth inventions, and the first pipe and the second pipe are attached to the last pipe of the pipeline in the pipeline construction pit. A pipe joining method for joining the
placing the first pipe on the first carriage of the pipe conveying device that can freely travel on the rail in the pipe laying pit and placing the second pipe on the second carriage;
advancing the tube conveying device to join one end of the first tube to the other end of the last tube;
The other end of the first pipe is lifted, the pipe conveying device is moved backward, and the first conveying carriage is extracted from below the first pipe to the front side of the first pipe,
Detach one end of the connecting member from the first carriage,
By operating the operation part, the switching device is operated, the engaging member is switched from the engaged state to the disengaged state, the other end of the connecting member is disengaged from the second carriage, and the connecting member is separated from the first carriage and the second carriage. Remove from between the carrier and separate the first carrier and the second carrier,
Install an auxiliary rail device that branches from the rail on the front side of the first pipe and extends into the second pipe that is placed on the second carriage,
The first transport carriage is moved backward from the front side of the first pipe, traveled on the auxiliary rail device from the rail, and transferred into the second pipe,
removing the inclined portion of the auxiliary rail device branching from the rail and projecting forward from one end of the second pipe;
By advancing the second carrier, one end of the second pipe on the second carrier is joined to the other end of the first pipe joined to the rearmost pipe.

According to this, after the first pipe is joined to the rearmost pipe, the pipe conveying device is moved backward to extract the first carriage from below the first pipe to the front side of the first pipe, and then the connection member is connected. Since the one end is detached from the first carriage, the one end of the connecting member and the first carriage can be separated without interfering with the first pipe.

After that, the operation part is operated to operate the switching device, the engaging member is switched from the engaged state to the disengaged state, and the other end of the connecting member is disengaged from the second carriage. The other end portion of the connecting member and the second carriage can be easily separated from each other.

As described above, according to the present invention, it is possible to reduce the time and effort required for the work of removing the connecting member to separate the first and second carriages.

FIG. 3 is a side view of a tube placed on the tube conveying device used for tube joining work according to the first embodiment of the present invention. It is a partially notched top view when a pipe|tube is mounted on a pipe|tube conveying apparatus equally. It is a side view of a pipe|tube conveying apparatus equally. It is a top view of the 1st conveyance trolley of a pipe|tube conveyance apparatus equally. FIG. 2 is a view taken along line XX in FIG. 1; 6 is an enlarged view of a portion of FIG. 5; FIG. It is sectional drawing of the connection part of the 1st conveyance carriage and 1st connection member of a pipe conveying apparatus equally. It is a top view of the 2nd conveyance trolley of a pipe|tube conveyance apparatus equally. It is a top view of the connection part of the 1st connection member and 2nd connection member of a pipe|tube conveying apparatus equally. It is sectional drawing of the connection part of the 1st connection member and 2nd connection member of a pipe|tube conveying apparatus equally. It is sectional drawing of the connection part and switching device of the 2nd conveyance carriage and 2nd connection member of a pipe conveying apparatus same, and shows the state in which the engagement pin is switched to the engagement position. FIG. 12 is a view taken along line XX in FIG. 11; FIG. 11 is a cross-sectional view of the connecting portion between the second carrier and the second connecting member of the pipe conveying device and the switching device, showing a state in which the engagement pin is switched to the disengaged position; FIG. 14 is a view taken along line XX in FIG. 13; It is a sectional view of the connection part and switching device of the 2nd conveyance carriage and the 2nd connection member of a pipe conveyance apparatus equally, and shows the state which isolate|separated the 2nd conveyance carriage and the 2nd connection member. It is a perspective view of the jig|tool for lifting used for joining operation|work of a pipe|tube equally. Fig. 10 is a cross-sectional view of a lifting jig used for joining pipes in the same. It is a front view of the lifting jig used for jointing work of pipes. It is a figure at the time of lifting the socket of a pipe|tube using the same jig for lifting. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. FIG. 10 is a side view of an auxiliary rail device used for joining pipes according to the second embodiment of the present invention; It is a top view of an auxiliary rail apparatus equally. It is a front view of an auxiliary rail device equally. It is an enlarged front view of the auxiliary rail device of the same. It is a figure which shows the joining method of a pipe|tube using an auxiliary rail apparatus equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally. 1 is a schematic side view of a conventional tube carrier; FIG. It is a figure which shows the joining method of a pipe|tube using a pipe|tube conveying apparatus equally. It is a figure which shows the joining method of a pipe|tube equally. It is a figure which shows the joining method of a pipe|tube equally.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
In the first embodiment, as shown in FIGS. 1, 2 and 20, reference numeral 1 denotes a pipeline-laying pit constructed underground by a shield tunneling machine, on which a primary lining is constructed. A pipeline 2 formed by joining a plurality of pipes and a pair of left and right rails 17 (an example of rails) are laid in the pipeline laying pit 1 . Both rails 17 are formed by joining a plurality of split rails 18 together.

Further, in the pipeline laying pit 1, a pipe transporting device 10 for transporting pipes and a self-propelled vehicle 9 such as a battery car for running the pipe transporting device 10 are provided. As shown in FIGS. 1 to 3, the pipe conveying apparatus 10 includes a first conveying carriage 12 that conveys the first pipe 11, a second conveying carriage 15 that conveys the second pipe 14, and the first conveying carriage 12. and a connecting device 16 for connecting with the second carriage 15 .

Incidentally, each of the tubes constituting the pipeline 2, the last tube 4, the first tube 11 and the second tube 14 of the pipeline 2 has an insertion port 19 at one end and a socket at the other end. has 20. Further, the self-propelled vehicle 9 is detachably connected to the second carrier 15 .

As shown in FIGS. 3 and 4 to 7, the first transport carriage 12 can freely travel on rails 17 in the pipe laying pit 1, and has a carriage body 23 and a plurality of It has running wheels 24, a plurality of truck jacks 25 (an example of a lifting device) for lifting and lowering the first pipe 11 supported on the truck body 23, and a temporary placement plate 26 for temporarily placing the removed split rail 18. are doing.

The carriage body 23 has a pair of front and rear support frames 60 that support the first pipe 11 and a connection frame 61 that is connected between the support frames 60 . Further, the traveling wheels 24 can roll freely on the rails 17 , the carriage jacks 25 are provided on the carriage body 23 , and the temporary placing plates 26 are provided on both side ends of the carriage body 23 .

As shown in FIGS. 1 to 3, 5, 6 and 8, the second carrier 15 has the same configuration as the first carrier 12, and a second carrier is mounted on the carrier body . A tube 14 is supported. As shown in FIGS. 8 and 11 to 15, the carriage body 23 of the second carriage 15 has a connecting plate 27 at one end, and the connecting plate 27 has an engagement hole penetrating vertically. 31 are formed.

The connecting device 16 has a connecting member 28 whose one end is detachable from the carriage body 23 of the first carriage 12 and whose other end is detachable from the carriage body 23 of the second carriage 15 . Furthermore, the connecting member 28 can be divided into a first connecting member 29 and a second connecting member 30 .

As shown in FIGS. 3, 4 and 7, one end of the first connecting member 29 is detachably connected to the carriage body 23 of the first carriage 12 via a first connecting pin 32. 10 , the other end of the first connecting member 29 and one end of the second connecting member 30 are detachably connected via a plurality of relay connecting pins 33 .

As shown in FIGS. 11 to 15, the second connecting member 30 is a channel-shaped member with an open lower surface and has a support plate 39 on the upper surface of the other end. A holding hole 40 is formed in the support plate 39 so as to vertically pass through the second connecting member 30 .

The second connecting member 30 is provided with an engaging pin 36 (an example of an engaging member) that can be freely engaged with and disengaged from the second carriage 15, and a switching device 37 that switches the engaging pin 36 from an engaged state to a disengaged state. It is

The engaging pin 36 is fitted in the holding hole 40 of the second connecting member 30 and is freely engageable with and disengageable from the connecting plate 27 of the second carriage 15. As shown in FIGS. 31 and engages with the connecting plate 27 of the second carriage 15, and as shown in FIGS. It can be switched to a detached position P<b>2 in which it is detached from the connecting plate 27 of the carriage 15 . The engaged state corresponds to a state in which the engaging pin 36 is switched to the engaged position P1, and the disengaged state corresponds to a state in which the engaging pin 36 is switched to the disengaged position P2.

The switching device 37 switches the engagement pin 36 from the engagement position P1 to the disengagement position P2. It has an interlocking rod 44 and an operating lever 45 (an example of an operating portion) for operating the switching device 37 from the outside.

The support plate 43 is supported by the support piece 47 inside the other end of the second connecting member 30 and is slidable in the pipe length direction A. As shown in FIG. The interlocking rod 44 is provided inside the second connecting member 30 , the operating lever 45 is provided at one end of the interlocking rod 44 , and the support plate 43 is provided at the other end of the interlocking rod 44 .

A receiving plate 56 is provided inside the other end of the second connecting member 30 to receive from below the engaging pin 36 that has fallen from the engaging position P1 to the disengaging position P2.

As shown in FIGS. 9, 10, 11, and 13, an elongated hole 48 extending vertically and extending in the pipe length direction A is formed in one end of the second connecting member 30. As shown in FIGS. The operating lever 45 is inserted through the long hole 48 from the inside of the second connecting member 30 and protrudes upward from the second connecting member 30 . It is exposed in a space 57 formed between it and the second tube 14 placed thereon.

Further, as shown in FIGS. 11, 13, and 15, a fall prevention member 50 is provided at the other end of the second connecting member 30. As shown in FIGS. The fall prevention member 50 is configured such that when the engagement pin 36 is in engagement with the connection plate 27 of the second carriage 15, the second connection member 30 is held by its own weight (and the weight of the engagement pin 36 and a coil, which will be described later). It is a member for preventing falling due to the biasing force of the spring 54), and is composed of a vertical plate 51 erected on the upper surface of the second connecting member 30 and a horizontal plate 52 provided at the upper end of the vertical plate 51. , are configured in an inverted L shape.

As shown in FIG. 11 , when the other end of the second connecting member 30 and the second carriage 15 are connected, the connecting plate 27 of the second carriage 15 and the support plate 39 of the second connecting member 30 It is sandwiched between the fall prevention member 50 and the horizontal plate 52, and the horizontal plate 52 engages with the connecting plate 27 from above.

When connecting the other end of the second connecting member 30 and the second carriage 15, the other end of the second connecting member 30 is connected by engaging the horizontal plate 52 with the connecting plate 27 from above. It can be temporarily (temporarily) deposited on the plate 27 . Therefore, even when the other end portion of the second connecting member 30 and the second carriage 15 are connected to each other, the second connecting member 30 can be prevented from falling due to its own weight, and the connecting work can be easily performed. can do

Also, the connecting plate 27 of the second carriage 15 is provided with a coil spring 54 (an example of a biasing member) that biases the engagement pin 36 from the engagement position P1 toward the disengagement position P2. The coil spring 54 is housed in a box-shaped housing member 55 provided on the upper surface of the connecting plate 27 . At the top of the engaging pin 36, there is formed a female threaded portion 38 for pulling up the engaging pin 36 switched to the disengaged position P2 to set it at the engaging position P1.

According to the switching device 37 as described above, when the engagement pin 36 is switched to the engagement position P1 as shown in FIGS. It plunges into the hole 31 and engages with the connecting plate 27 . Thereby, the second connecting member 30 and the second carriage 15 are connected via the engaging pin 36 and the connecting plate 27 . At this time, the coil spring 54 is compressed and the operating lever 45 is switched to the connecting position P3.

Thereafter, as shown in FIGS. 13 and 14, by switching the operation lever 45 from the connection position P3 to the disconnection position P4, the interlocking rod 44 slides in the pipe length direction A in conjunction with the operation lever 45, and the support plate 43 is moved. It retracts forward from below the engagement pin 36 . As a result, the engaging pin 36 drops, is switched from the engaging position P1 to the disengaging position P2, and is received by the receiving plate 56. As shown in FIG. As a result, the engaging pin 36 drops below the engaging hole 31 and is separated from the connecting plate 27, thereby releasing the connection between the second connecting member 30 and the second carriage 15 as shown in FIG.

At this time, since the engaging pin 36 is urged from the engaging position P1 toward the disengaging position P2 by the coil spring 54, it is reliably switched to the disengaging position P2.

As shown in FIGS. 16 to 18, 80 is a lifting jig for lifting the pipe in the pipe laying pit 1. As shown in FIG. The lifting jig 80 has a jig frame 81 , a clamping mechanism 82 that clamps the opening end of the socket 20 of the first pipe 11 in the pipe radial direction B, and a hydraulic jack 83 .

The jig frame 81 has a back plate portion 86 and an inner plate portion 87 and an outer plate portion 88 provided at both ends of the back plate portion 86 . A handle 89 is provided on the back plate portion 86 .

The clamping mechanism 82 has a pair of fixed plate 91 and movable plate 92 that face each other in the pipe radial direction B, and a moving member 93 that moves the movable plate 92 with respect to the fixed plate 91 . The fixed plate 91 is fixed to the back plate portion 86 . The jack 83 has a telescopic ram 84 attached to the fixed plate 91 and passing through the outer plate portion 88 .

The moving member 93 has a bolt body 94 having a male thread on its outer periphery and an engaging piece 95 provided at the tip of the bolt body 94 . A threaded hole 90 having a female thread is formed in the inner plate portion 87 . The bolt body 94 of the moving member 93 is rotatably inserted into the screw hole 90 in a state where the male screw and the female screw are screwed together. Further, the movable plate 92 has an engaging body 96 on its upper surface. The engaging piece 95 has a larger diameter than the bolt body 94, and the engaging piece 95 and the engaging body 96 are engaged.

According to the lifting jig 80 as described above, as shown by the phantom lines in FIG. to bring the movable plate 92 closer to the fixed plate 91 . As a result, the distance C between the fixed plate 91 and the movable plate 92 in the pipe radial direction B is shortened, and the opening end of the socket 20 is sandwiched between the fixed plate 91 and the movable plate 92, and the lifting jig is held. 80 is attached to the open end of receptacle 20 .

Thus, as shown in FIG. 19, two lifting jigs 80 are attached below the open end of socket 20, and rams 84 of jacks 83 of both lifting jigs 80 are extended. As a result, the tip of the ram 84 pushes the inner wall surface 5 of the pipeline laying hole 1, so that the socket 20 of the first pipe 11 is lifted.

Further, by rotating the moving member 93 in the opposite direction to move the movable plate 92 away from the fixed plate 91, the distance C between the fixed plate 91 and the movable plate 92 in the pipe radial direction B is increased, and the lifting jig 80 is moved. It can be removed from the open end of socket 20 .

A joining method for joining pipes in the pipe laying pit 1 using the pipe conveying device 10 and the lifting jig 80 will be described below.

As shown in FIG. 20, the first pipe 11 is placed on the carriage body 23 of the first carriage 12 of the pipe conveying device 10, the second pipe 14 is placed on the carriage body 23 of the second carriage 15, and the pipe is self-propelled. By advancing the vehicle 9 and pushing the pipe conveying device 10 forward, the first conveying carriage 12 and the second conveying carriage 15 are advanced to convey the first pipe 11 and the second pipe 14, thereby conveying the first pipe 11 and the second pipe 14. The insertion port 19 (one end) of 11 is inserted into the socket 20 (the other end) of the tube 4 at the rear end of the pipeline 2 and joined.

At this time, the connecting member 28 is hidden under the first and second pipes 11 and 14 . Further, by adjusting the vertical position of the first pipe 11 with the carriage jacks 25 of the first transport carriage 12, it is possible to perform centering at the time of joining.

Next, as shown in FIGS. 19, 21, and 22, two lifting jigs 80 are attached to the lower portion of the opening end of the socket 20 of the first pipe 11, and both lifting jigs 80 are attached. Extend ram 84 of jack 83 to lift socket 20 (other end) of first tube 11 . As a result, the first pipe 11 floats above the first carriage 12 .

Next, as shown in FIG. 23, the self-propelled vehicle 9 is moved backward to move the pipe conveying device 10 backward, and the first carriage 12 is extracted from below the first pipe 11 to the front side of the first pipe 11. .

Next, as shown in phantom lines in FIG. 6 and FIG. 24 , the split rail 18 of the rail 17 below the first pipe 11 is removed and placed on the temporary placement plate 26 of the first carriage 12 .

Next, as shown in FIG. 25, a support member 63 such as H-shaped steel is installed below the socket end of the first pipe 11, and the ram 84 of the jack 83 of the lifting jig 80 is shortened. , the socket-side end (the other end) of the first tube 11 is lowered onto the support member 63 and supported by the support member 63 . Thereafter, the two lifting jigs 80 are removed from the open end of the socket 20 of the first pipe 11 and moved into the second pipe 14 for temporary storage. Since the socket-side end of the first pipe 11 is supported by the support member 63 as described above, it is possible to prevent the socket-side end of the first pipe 11 from shifting downward.

Next, as shown in FIG. 26, the connecting member 28 is removed to separate the first carriage 12 and the second carriage 15 from each other. 7, the first connecting pin 32 is removed to release the connection between the first connecting member 29 and the first carriage 12, and the relay connecting pin 33 is removed as indicated by the phantom line in FIG. is removed to release the connection between the first connecting member 29 and the second connecting member 30 , and the first connecting member 29 is separated from between the first carriage 12 and the second connecting member 30 . As a result, the first connecting member 29 and the first carriage 12 can be separated by removing the first connecting pin 32 without interfering with the first pipe 11 .

Thereafter, as shown in FIGS. 13 and 14, the operating lever 45 is operated to switch from the connecting position P3 to the disconnecting position P4. As a result, the engagement pin 36 is switched from the engagement position P1 to the disengagement position P2, and the connection between the second connection member 30 and the second carriage 15 can be released by remote control, as shown in FIG. , the second connecting member 30 is separated from the second carrier 15, the connecting member 28 is removed from between the first carrier 12 and the second carrier 15, and the first carrier 12 and the second carrier 15 are separated. and are separated.

As shown in FIG. 13, the operating lever 45 can be operated in a space away from the engaging pin 36, i.e., in an empty space in front of the insertion opening 19 of the second tube 14. Therefore, the engaging pin 36 can be operated by remote control. It is possible to switch from the engaged position P1 to the disengaged position P2. Therefore, when switching the engagement pin 36 from the engagement position P1 to the disengagement position P2, the second pipe 14 on the second carriage 15 does not interfere with the switching.

Therefore, even if the space below the second pipe 14 placed on the second carriage 15 is narrow, the other end of the connecting member 28 and the second pipe 14 can be easily connected by operating the operation lever 45 . The connection with the carriage 15 can be released. As a result, it is possible to reduce the time and labor required for the work of removing the connecting member 28 to separate the first carriage 12 and the second carriage 15 .

The first connecting member 29 and the second connecting member 30 removed as described above are moved into the second pipe 14 and temporarily stored as shown in FIG. Further, the second pipe 14 placed on the second carrier 15 is lifted by the carrier jack 25 .

After that, as shown in FIG. 27, the first carriage 12 is pushed backward and drawn below the second pipe 14 on the second carriage 15 . As a result, the first carriage 12 is drawn below the second pipe 14 together with the divided rails 18 removed and placed on the temporary placement plate 26 .

By lifting the second pipe 14 on the second carriage 15 with the carriage jack 25 as described above, the space below the second pipe 14 expands upward. A space 65 that can be retracted below 14 can be reserved below the second tube 14 .

Thereafter, as shown in FIG. 28, the self-propelled vehicle 9 is advanced to advance the second carrier 15 together with the first carrier 12, and as shown in FIG. 14 spigots 19 are joined to sockets 20 of the first tube 11 joined to the last tube 4;

At this time, by adjusting the vertical position of the second pipe 14 with the carriage jacks 25 of the second carriage 15, centering during joining can be performed.

After that, as shown in FIG. 30, two lifting jigs 80 are attached to the bottom of the open end of the socket 20 of the second pipe 14, and the socket of the second pipe 14 is lifted by the lifting jigs 80. 20 (other end) is lifted. As a result, the second pipe 14 floats above the second carriage 15 .

Then, as shown in FIG. 31, the self-propelled vehicle 9 and the first and second carriages 12 and 15 are moved backward to move the first and second carriages 12 and 15 from below the second pipe 14 to the second pipe. Pull out to the front side of 14. As a result, the first pipe 11 and the second pipe 14 are joined to the last pipe 4 of the pipeline 2, and the pipeline 2 in the pipeline laying pit 1 is extended by repeating the joining process. be.

According to the tube joining method as described above, when the operation lever 45 is switched from the connecting position P3 (see FIG. 11) to the disconnecting position P4 (see FIG. 13), the engaging pin 36 moves to the engaging position P1 (see FIGS. 12) to the disengaged position P2 (see FIGS. 13 and 14), the engagement pin 36 disengages from the engagement position P1 without using a special driving device such as an electric motor or hydraulic cylinder. It is possible to switch to the position P2 and reduce power consumption.

Further, since the engaging pin 36 is urged from the engaging position P1 toward the disengaging position P2 by the coil spring 54, it is reliably switched to the disengaging position P2.

6 and FIG. 24, by placing the removed split rail 18 on the temporary placement plate 26 of the first carriage 12, the removed split rail 18 can be easily removed together with the first carriage 12. can be recovered.

Also, after the second pipe 14 is joined to the first pipe 11 , the first connecting member 29 and the second connecting member 30 can be easily recovered from the inside of the second pipe 14 .

(Second embodiment)
A second embodiment will be described below. The same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the second embodiment, the last pipe of the pipeline 2 in the pipeline laying hole 1 is lifted by using the pipe transport device 10, the lifting jig 80, and the auxiliary rail device 101 (an example of the auxiliary rail device). 4, the first pipe 11 and the second pipe 14 are joined in sequence.

As shown in FIGS. 32 to 35, the auxiliary rail device 101 has a plurality of auxiliary sleepers 102 and a pair of left and right auxiliary rails 103 supported on the auxiliary sleepers 102 . The auxiliary rail 103 has an inclined rail portion 104 (an example of an inclined portion) that inclines obliquely upward rearward from the front end portion, and a horizontal rail portion 105 that extends rearward from the rear end portion of the inclined rail portion 104 . The inclined rail portion 104 and the end portion of the horizontal rail portion 105 are detachably connected via bolts, nuts, or the like.

The self-propelled vehicle 9 is also provided with a wire rope 107 having a hook at its tip and a winch 108 for winding the wire rope 107 . In addition, the rail 17 in the pipe laying hole 1 is supported on a plurality of sleepers 8 .

A joining method for joining pipes in the pipe laying pit 1 using the pipe conveying device 10, the lifting jig 80 and the auxiliary rail device 101 will be described below.

As shown in FIG. 36, the first pipe 11 is placed on the carriage body 23 of the first carriage 12 of the pipe conveying device 10, the second pipe 14 is placed on the carriage body 23 of the second carriage 15, and the pipe is self-propelled. By advancing the vehicle 9 and pushing the pipe conveying device 10 forward, the first conveying carriage 12 and the second conveying carriage 15 are advanced to convey the first pipe 11 and the second pipe 14, thereby conveying the first pipe 11 and the second pipe 14. The insertion port 19 (one end) of 11 is inserted into the socket 20 (the other end) of the tube 4 at the rear end of the pipeline 2 and joined.

At this time, the connecting member 28 is hidden under the first and second pipes 11 and 14 . Further, by adjusting the vertical position of the first pipe 11 with the carriage jacks 25 of the first transport carriage 12, it is possible to perform centering at the time of joining.

Next, as shown in FIGS. 19, 37, and 38, two lifting jigs 80 are attached to the lower portion of the opening end of the socket 20 of the first pipe 11, and both lifting jigs 80 are attached. Extend ram 84 of jack 83 to lift socket 20 (other end) of first tube 11 . As a result, the first pipe 11 floats above the first carriage 12 .

Next, as shown in FIG. 39, the self-propelled vehicle 9 is moved backward to move the pipe conveying device 10 backward, and the first carriage 12 is extracted from below the first pipe 11 to the front side of the first pipe 11. .

Next, as shown in FIG. 40, the connecting member 28 is removed to separate the first connecting member 29 and the second connecting member 30 . 7, the first connecting pin 32 is removed to release the connection between the first connecting member 29 and the first carriage 12, and as indicated by the phantom line in FIG. The pin 33 is removed to release the connection between the first connecting member 29 and the second connecting member 30 , and the first connecting member 29 is separated from between the first carriage 12 and the second connecting member 30 . As a result, the first connecting member 29 and the first carriage 12 can be separated by removing the first connecting pin 32 without interfering with the first pipe 11 .

Thereafter, as shown in FIGS. 13 and 14, the operating lever 45 is operated to switch from the connecting position P3 to the disconnecting position P4. As a result, the engagement pin 36 is switched from the engagement position P1 to the disengagement position P2, and the connection between the second connection member 30 and the second carriage 15 can be released by remote control. The second carrier 15 is separated, the connecting member 28 is removed from between the first carrier 12 and the second carrier 15, and the first carrier 12 and the second carrier 15 are separated.

As shown in FIG. 13, the operating lever 45 can be operated in a space away from the engaging pin 36, i.e., in an empty space in front of the insertion opening 19 of the second tube 14. Therefore, the engaging pin 36 can be operated by remote control. It is possible to switch from the engaged position P1 to the disengaged position P2. Therefore, when switching the engagement pin 36 from the engagement position P1 to the disengagement position P2, the second pipe 14 on the second carriage 15 does not interfere with the switching.

Therefore, even if the space below the second pipe 14 placed on the second carriage 15 is narrow, the other end of the connecting member 28 and the second pipe 14 can be easily connected by operating the operation lever 45 . The connection with the carriage 15 can be released. As a result, it is possible to reduce the time and labor required for the work of removing the connecting member 28 to separate the first carriage 12 and the second carriage 15 .

The first connecting member 29 and the second connecting member 30 removed as described above are moved into the first pipe 11 and temporarily stored as shown in FIG.

After that, as shown in FIGS. 32 to 34 and 41, the auxiliary rail device 101 is installed inside the second pipe 14 on the second carriage 15 . At this time, the horizontal rail portion 105 is installed inside the second pipe 14 , and the inclined rail portion 104 is attached to the front end portion of the horizontal rail portion 105 to protrude forward from the insertion opening 19 of the second pipe 14 . As a result, the auxiliary rail device 101 is installed so as to branch upward from the rail 17 on the front side of the first pipe 11 and extend into the second pipe 14 .

Thereafter, as shown in FIG. 42, the hook of the wire rope 107 provided on the self-propelled vehicle 9 is hooked to the empty first carrier 12, and the winch 108 is operated to wind up the wire rope 107. As shown in FIG. As a result, the first carriage 12 is pulled by the wire rope 107, moves backward from the front side of the first pipe 11, and transfers from the rail 17 onto the auxiliary rail device 101, as shown in FIGS. As shown in FIG. 43, it travels on the horizontal rail portion 105 through the inclined rail portion 104, is transferred into the second pipe 14, and is supported on the horizontal rail portion 105 as shown in FIG. It is housed within 14.

Next, as shown in FIG. 44 , the split rail 18 of the rail 17 below the first pipe 11 is removed and placed on the temporary placement plate 26 of the first carriage 12 in the second pipe 14 . Further, the first connecting member 29 and the second connecting member 30 are moved from inside the first pipe 11 onto the first carriage 12 inside the second pipe 14 .

Next, as shown in FIG. 45, a support member 63 such as H-shaped steel is installed below the socket end of the first pipe 11, and the ram 84 of the jack 83 of the lifting jig 80 is shortened. , the socket-side end (the other end) of the first tube 11 is lowered onto the support member 63 and supported by the support member 63 . Thereafter, the two lifting jigs 80 are removed from the open end of the socket 20 of the first pipe 11 and moved into the second pipe 14 for temporary storage. Since the socket-side end of the first pipe 11 is supported by the support member 63 as described above, it is possible to prevent the socket-side end of the first pipe 11 from shifting downward.

Also, the inclined rail portion 104 of the auxiliary rail device 101 (corresponding to the inclined portion of the auxiliary rail device 101 branching from the rail 17 and projecting forward from the insertion port 19 of the second pipe 14) is removed from the horizontal rail portion 105. Temporarily housed in the second tube 14 .

Thereafter, as shown in FIG. 46, the self-propelled vehicle 9 is advanced to advance the second carrier 15, and the insertion opening 19 of the second pipe 14 on the second carrier 15 is joined to the rearmost pipe 4. It joins to the receptacle 20 of the first pipe 11 .

At this time, by adjusting the vertical position of the second pipe 14 with the carriage jacks 25 of the second carriage 15, centering during joining can be performed.

After that, as shown in FIG. 47, two lifting jigs 80 are attached to the bottom of the open end of the socket 20 of the second pipe 14, and the socket of the second pipe 14 is lifted by the lifting jigs 80. 20 (other end) is lifted. As a result, the second pipe 14 floats above the second carriage 15 . Then, the self-propelled vehicle 9 and the second carriage 15 are moved backward, and the second carriage 15 is extracted from below the second pipe 14 to the front side of the second pipe 14 and retreated behind the second pipe 14. - 特許庁.

Next, as shown in FIG. 48 , the split rail 18 of the rail 17 below the second pipe 14 is removed and placed on the temporary placing plate 26 of the second carriage 15 . Further, a support member 63 such as H-shaped steel is installed below the end of the second pipe 14 on the side of the socket, and the ram 84 of the jack 83 of the lifting jig 80 is shortened so that the socket of the second pipe 14 is The side end (other end) is lowered onto the support member 63 and supported by the support member 63 . After that, the two lifting jigs 80 are removed from the open end of the socket 20 of the second tube 14 .

Thereafter, as shown in FIG. 49 , the inclined rail portion 104 is attached to the rear end portion of the horizontal rail portion 105 so as to protrude rearward from the socket 20 of the second pipe 14 , and the rear end portion of the inclined rail portion 104 is attached to the rail 17 . Communicate above.

Then, as shown in FIG. 50, the hook of the wire rope 107 of the self-propelled vehicle 9 is hooked to the first carriage 12 in the second pipe 14, and the winch 108 is operated to wind up the wire rope 107. As shown in FIG. As a result, the first carriage 12 moves backward on the horizontal rail portion 105 inside the second pipe 14 and is lowered onto the rail 17 from the inclined rail portion 104 .

As a result, the first pipe 11 and the second pipe 14 are joined to the last pipe 4 of the pipeline 2, and the pipeline 2 in the pipeline laying pit 1 is extended by repeating the joining process. be.

In the first and second embodiments, as shown in FIG. 11, the engaging pin 36 (an example of the engaging member) that can be freely engaged with and disengaged from the second carriage 15 is attached to the other end of the connecting member 28 ( That is, the switching device 37 is provided on the second connecting member 30), and the engaging pin 36 (an example of the engaging member) that can be freely engaged and disengaged with the first carriage 12 is provided on the connecting member 28. may be provided at one end (that is, the first connecting member 29 ), and the switching device 37 may be provided on the first connecting member 29 .

According to this, by operating the operation lever 45 to operate the switching device 37, the engagement pin 36 is switched from the engagement position P1 to the disengagement position P2, and the connection between the first carriage 12 and the connection member 28 is disconnected. be released. At this time, since the operation lever 45 can be operated without interfering with the first pipe 11 and the second pipe 14, when the space below the first pipe 11 placed on the first carriage 12 is narrow, Even so, the connection between the first carriage 12 and the connection member 28 can be easily released by operating the operation lever 45 . As a result, it is possible to reduce the time and labor required for the work of removing the connecting member 28 to separate the first carriage 12 and the second carriage 15 .

An engaging pin 36 that can be freely engaged with and disengaged from the first carriage 12 is provided at one end of the connecting member 28 , and an engaging pin 36 that can be freely engaged with and disengaged with the second carriage 15 is provided at the other end of the connecting member 28 . , and the switching device 37 may be provided on each of the first connecting member 29 and the second connecting member 30 .

In each of the above-described embodiments, the pipes are joined by inserting the insertion port 19 of another pipe into the socket 20 of the pipe joined to the pipe line 2. The ports 19 may be fitted with sockets 20 of another tube to join the tubes together.

In each of the above embodiments, the coil springs 54 are provided on the connecting plate 27 of the second carrier 15, but the coil springs 54 may be omitted.

In the above embodiment, each tube 4, 11, 14 has an insertion port 19 at one end and a socket 20 at the other end. It can also be applied when joining pipes having

1 pipe laying pit 2 pipe 4 last pipe 10 pipe conveying device 11 first pipe 12 first carrier 14 second pipe 15 second carrier 16 coupling device 17 rail (track)
19 insertion port (one end)
20 socket (other end)
28 connecting member 29 first connecting member 30 second connecting member 36 engaging pin (engaging member)
37 Switching device 45 Operation lever (operation unit)
54 Coil spring (biasing tool)
57 space 101 auxiliary rail device (auxiliary rail device)
104 Inclined rail portion (inclined portion)

Claims (6)

A pipe conveying device for conveying a pipe,
a first carriage that conveys the first pipe, a second carriage that conveys the second pipe, and a coupling device that connects the first carriage and the second carriage,
The connecting device has a connecting member, one end of which is detachable from the first carriage and the other end of which is detachable from the second carriage,
An engaging member is provided at an end portion of the connecting member and is capable of being engaged/disengaged with either one of the first carrier and the second carrier,
The engaging member is switchable between an engaged state in which it engages with one of the carriages and a disengaged state in which it disengages from one of the carriages,
A switching device for switching the engaging member from the engaged state to the disengaged state is provided on the connecting member,
The switching device has an operation part for operating the switching device from the outside,
A pipe conveying device characterized in that the operating part is exposed in a space formed between the first pipe placed on the first carrier and the second pipe placed on the second carrier. . 2. The tube conveying apparatus according to claim 1, wherein the engaging member is switched to the disengaged state by dropping from the engaged state. 3. The pipe conveying apparatus according to claim 1, wherein one of the carriages is provided with a biasing member for biasing the engaging member from the engaged state to the disengaged state. the connecting member is divisible into a first connecting member and a second connecting member;
The first connecting member is detachably connected to the first carriage,
an engaging member and a switching device are provided on the second coupling member;
4. The engaging member is switchable between an engaged state in which it engages with the second carriage and a disengaged state in which it disengages from the second carriage. The tube conveying device according to . Using the pipe conveying device according to any one of claims 1 to 4, the first pipe and the second pipe are sequentially joined to the last pipe of the pipe in the pipe laying tunnel. A joining method comprising:
placing the first pipe on the first carriage of the pipe conveying device that can freely travel on the rail in the pipe laying pit and placing the second pipe on the second carriage;
advancing the tube conveying device to join one end of the first tube to the other end of the last tube;
The other end of the first pipe is lifted, the pipe conveying device is moved backward, and the first conveying carriage is extracted from below the first pipe to the front side of the first pipe,
Detach one end of the connecting member from the first carriage,
By operating the operating portion, the switching device is operated to switch the engaging member from the engaged state to the disengaged state, disengage the other end of the connecting member from the second carriage, and disengage the connecting member from the first carriage and the second carriage. Remove from between the carrier and separate the first carrier and the second carrier,
The first carrier is moved backward to draw it below the second pipe placed on the second carrier,
The second carrier is moved forward together with the first carrier, and one end of the second pipe on the second carrier is joined to the other end of the first pipe joined to the last pipe. A method of joining pipes in a pipe laying pit. Using the pipe conveying device according to any one of claims 1 to 4, the first pipe and the second pipe are sequentially joined to the last pipe of the pipe in the pipe laying tunnel. A joining method comprising:
placing the first pipe on the first carriage of the pipe conveying device that can freely travel on the rail in the pipe laying pit and placing the second pipe on the second carriage;
advancing the tube conveying device to join one end of the first tube to the other end of the last tube;
The other end of the first pipe is lifted, the pipe conveying device is moved backward, and the first conveying carriage is extracted from below the first pipe to the front side of the first pipe,
Detach one end of the connecting member from the first carriage,
By operating the operating portion, the switching device is operated to switch the engaging member from the engaged state to the disengaged state, disengage the other end of the connecting member from the second carriage, and disengage the connecting member from the first carriage and the second carriage. Remove from between the carrier and separate the first carrier and the second carrier,
Install an auxiliary rail device that branches from the rail on the front side of the first pipe and extends into the second pipe that is placed on the second carriage,
The first transport carriage is moved backward from the front side of the first pipe, traveled on the auxiliary rail device from the rail, and transferred into the second pipe,
removing the inclined portion of the auxiliary rail device branching from the rail and projecting forward from one end of the second pipe;
In a pipe laying pit characterized by advancing the second carrier and joining one end of the second pipe on the second carrier to the other end of the first pipe joined to the last pipe. pipe joint method.

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