JP3315601B2 - Transport vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport vehicle used for transporting a rack on which pipes are loaded.

[0002]

2. Description of the Related Art Conventionally, for example, a rack loaded with pipes has been transported by a large forklift, a dedicated transport vehicle (such as a trailer type truck), a crane, or the like.

[0003]

However, when a large forklift is used, the rack is transported with the length of the pipe in the left-right direction (vehicle width direction). Long pipes cannot be transported due to restrictions such as (road width). In addition, according to the dedicated transport vehicle, long pipes can be transported with the pipe length direction as the vehicle length direction, but because of the long vehicle length, when traveling in the sky or transporting short (small) objects There is a lot of waste and traveling is not easy, and rack loading / unloading work with a crane or the like is required. And the transportation range by the crane is limited.

Therefore, according to the invention of claim 1 of the present invention, a long transported object can be transported in the vehicle length direction while traveling in the air or a short transported object (small transported object). It is an object of the present invention to provide a transport vehicle capable of shortening the length of a transported object (transported object) and further capable of loading and unloading an object to be transported by itself.

[0005]

According to one aspect of the present invention, there is provided a transport vehicle having a truck head and a trailer , the trailer comprising a truck.
A front frame connected to the head body so as to be rotatable relatively around the vertical axis;
And the frame part
Trays provided on both sides of the rear part of the
The frame portion is provided with a lifting device for the object to be conveyed, and the lifting device comprises a pair of left and right hanging frames that can be freely moved toward and away from each other.
And the left and right
It is characterized by being constituted by a pair of right hanging hooks .

[0006] Therefore, according to the invention of claim 1, at the time and air travel before performing the transport of the consignment, the short frame parts of the trailer, that is, contract the transport vehicle in the longitudinal direction, further lifting device Rising, hanging hook
As well as the hanging hook via the hanging frame.
The affected postures are moved closer to each other . Therefore, when the empty transport vehicle is moved to the storage location, the transport vehicle is contracted shortly, so that the travel can be easily performed without waste. The transport vehicle that has traveled to the storage location is moved backward, and its rear end is brought sufficiently close to one end in the longitudinal direction of the transported object, and is opposed to a straight line.

[0007] Then, the suspension foot is suspended via the suspension frame.
After the hooks are moved away from each other, the frame portion is extended (moved) rearward, and the hanging hooks of the lifting device are opposed to the load. Then, with the hanging hook lowered,
Move the hanging hooks closer to each other via the lowering frame,
As a result, both hanging hooks are locked to the carried object from the left and right. This
After that, raise the hanging hook through the hanging frame
As a result, the load can be lifted (lifted) to a predetermined height.
You. Then with Rukoto contract the frame portion, enables the desired conveying traveling shorter luck transportable vehicle. At this time, since the transport can be performed with the length direction of the transported object in the front-rear direction (vehicle length direction), there is not much restriction on the running width (road width) and the truck head and the trailer rotate relatively. In addition to this, transporting can be easily performed in a wide range.

After transporting to the destination in this way,
By carrying out the opposite operation to the above, the transported object can be lowered.
That is, the transport vehicle can load and unload the transported object by itself. Thereafter, as described above, the vehicle can travel in the empty state with the length of the transport vehicle shortened. When supporting a short (small) object to be transported, the transport vehicle can be transported more easily by shortening the transport vehicle as in an empty travel.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
A description will be given based on the drawings as a state adopted for transporting a rack (an object to be transported) on which pipes are loaded.

As shown in FIGS. 1 and 2, the track head 1 is constructed by disposing wheels 3 and a driving unit 4 on a main body 2 thereof. A trailer 10 is connected to a rear portion of the track head 1 so as to be relatively rotatable around a vertical axis. The trailer 10 is provided with a lifting device 30 for the transported object.
Is configured to be extendable and contractible in the front-rear direction.

That is, a front frame 12 is provided on the main body 2 via a vertical axis 11. This front frame 12
Has a U-shape in front and rear view, and the longitudinal axis 11 vertically suspended from the center of the bottom plate portion is rotatably supported by a bearing device 5 provided on the main body 2 side. End rollers 13 are provided at upper ends of both side plate portions of the front frame 12, and front outriggers 14 are provided at front and rear portions of both side plate portions.

Guide grooves 16 into which the end rollers 13 are fitted are provided on both sides of the first upper frame 15, and a second upper frame 17 having no guide grooves is provided at the rear end of the first upper frame 15. Are connected. And the front frame
A telescopic cylinder device 18 is provided between the front frame 12 and the first upper frame 15 to extend and retract the upper frames 15 and 17 relative to the front and rear directions. The telescopic cylinder device 18 is of a multi-stage type, and is provided singly or plurally.

On both sides of the rear portion of the second upper frame 17,
Each of the rear frames 20 is provided with a wheel width changing cylinder device 19 interposed therebetween. Here, the wheel width changing cylinder devices 19 are provided in a pair in front and rear, respectively, with the length direction being the vehicle width direction. And at the bottom of the rear frame 20,
The trailer unit wheels 22 are provided via the respective wheel frames 21.

A little before the place where the rear frame 20 is disposed, on both sides of the second upper frame 17,
Each of the rear outriggers 24 is provided with an outrigger width changing cylinder device 23 interposed therebetween, and the length direction of the outrigger width changing cylinder device 23 is provided as a vehicle width direction. The trailer 10 which is connected to the tractor head 1 so as to be relatively rotatable around the longitudinal axis 11A is constituted by 11 to 24 and the like.

The lifting device 30 is provided on a frame portion of the trailer 10 which is configured to be able to expand and contract in the front-rear direction, that is, on both sides of the second upper frame 17 from the front to the middle. The lifting device 30 includes a second upper frame
There are a total of four clamp width changing cylinder devices 31 distributed to the front and rear on both sides of 17, and the length direction of the clamp width changing cylinder devices 31 is the vehicle width direction, and the piston rod is It is provided facing toward.

A hanging frame is provided between the piston rods in the front and rear clamp width changing cylinder devices 31.
The suspension frame 32 is long in the front-rear direction and provided in a pair on the left and right. A vertically extending suspension cylinder device 33 is provided at an intermediate portion in the front-rear direction of both suspension frames 32, and a suspension hook 34 is provided on a downwardly facing piston rod of the suspension cylinder device 33. Here, the suspension hook 34 is formed in a plate shape that is long in the front-rear direction, for example, and projects a predetermined amount inward.

In order to stably move the hanging hooks 34 up and down, guide rods 35 are erected from the front and rear ends of the two hanging hooks 34, respectively. It is suspended from the suspension frame 32. Lifting device for transported objects by the above 31-36
30 are configured.

A rack 40, which is an example of the object to be conveyed, includes a rectangular plate-shaped receiving base 41, a vertical rod 42 erected from the four corners of the receiving base 41, and engaging members formed on both sides of the receiving base 41. The stop portion 43 and the like are provided. And long objects such as pipes 45
Are formed on the receiving table 41 between the left and right vertical rods 42 so as to be freely mounted.

The operation of the above embodiment will be described below. Before carrying the rack 40 or during idle running, as shown in FIG. 3, the front outrigger 14 and the rear outrigger 24 are raised, and the first upper frame 15 and the like are moved forward by contraction of the telescopic cylinder device 18. To shorten the trailer 10, that is, to contract the transport vehicle in the front-rear direction, and by contracting the wheel width changing cylinder device 19, the trailer unit wheels 22 are moved closer to each other via the rear frame 20, etc. Is adjusted to the minimum width. Further, the lifting device 30 raises the lifting hook 34 by contraction of the lifting cylinder device 33, and causes the lifting hooks 34 to move closer to each other via the lifting frame 32 and the like by contraction of the clamp width changing cylinder device 31. I have.

In such a state, the empty transport vehicle is caused to travel to the storage location. At that time, the transport vehicle is easily contracted in the front-rear direction, so that the travel can be easily performed. For example, a rack 40 supporting a long object 45 is placed on the road surface of the storage place, and the transport vehicle that has traveled to the storage place in the state described above is moved backward in this storage place, and Is sufficiently close to one end in the length direction of the long object 45, and is opposed in a straight line.

Then, the front outrigger 14 is lowered to land. Around this time, the rear outriggers 24 are moved away from each other by the extension of the outrigger width changing cylinder device 23, and then the rear outriggers 24 are lowered and landed, and the trailer wheels 22 are raised, and the trailer The load support by the unit wheels 22 is released (ground separation).

Next, the trailer wheels 22 are moved away from each other via the rear frame 20 or the like by the extension of the wheel width changing cylinder device 19. Further, by extension of the clamp width changing cylinder device 31 in the lifting device 30,
The suspension hooks 34 are moved away from each other via the suspension frame 32 or the like. The rear outrigger 24 and trailer wheel
The separation movement of the hook 22 and the hanging hook 34 is performed so as to be located outside the side surface of the rack 40 as shown by the phantom line in FIG.

Next, with the rear outrigger 24 raised and the trailer wheel 22 lowered onto the road surface to support the load, the first upper frame 15 and the like are extended (moved) by extending the telescopic cylinder device 18. ). Thus, the trailer 10 can be extended, that is, the transport vehicle can be extended rearward while rolling the trailer unit wheels 22 outside the side surface of the rack 40. This extension is stopped by the lifting device 30 facing the side of the rack 40.

Then, the suspension hook 34 is lowered by the extension of the suspension cylinder device 33, and is opposed to the locked portion 43 of the rack 40 as shown by the solid line in FIG. In this state,
Due to the contraction of the clamp width changing cylinder device 31, the hanging hooks 34 are moved closer to each other via the hanging frame 32 and the like, whereby the both hanging hooks 34 are locked to the locked portions 43.
Then, the suspension hook is caused by the contraction of the suspension cylinder device 33.
By raising 34, the rack 40 can be raised (lifted) to a predetermined height, as shown by a virtual line in FIG.

Next, the rear outrigger 24 is lowered to land, and the trailer wheel 22 is raised to release the load support (grounding). Then, due to the contraction of the wheel width changing cylinder device 19, the trailer wheels 22 are moved closer to each other via the rear frame 20 or the like. Next, after raising the rear outrigger 24 and lowering the trailer wheel 22 onto the road surface, the rear outriggers 24 are moved closer to each other by contraction of the cylinder device 23 for changing the outrigger width.

In this state, the telescopic cylinder device 18 is contracted. Then, due to the contraction force, the first upper frame 15 is advanced by being supported and guided by the end roller 13, that is, the trailer 10 is advanced, and as shown in FIG. Long object 45 for frame 12
Is inserted, and the front portion of the long object 45 is positioned on the main body 2. The trailer 10 is stably advanced on a straight line without swinging since the track head 1 is fixed by the front outriggers 14.

As described above, the telescopic cylinder device 18
By raising the front outrigger 14 in a state where the contraction of the transport vehicle is completed, the intended transport traveling by the transport vehicle can be performed.
At that time, the length direction of the long object 45 is the front-back direction (vehicle length direction)
Since the rack 40 can be transported, the transport travel can be easily performed over a wide range, with little restriction on the travel width (road width) and the relative rotation of the track head 1 and the trailer 10. I can do it.

After being transported to the destination in this way,
By performing the opposite operation to the above, the rack 40 supporting the long object 45 can be lowered. That is, the transport vehicle can load and unload the rack 40 by itself. Thereafter, as described above, the vehicle can travel in the empty state without wasting while the length of the transport vehicle is shortened.

When the rack 40 supports a short (small) load, the transport vehicle can be transported more easily by shortening the transport vehicle in the same way as an empty travel. The operation and the like of each unit described above are performed by the driver in the driving unit 4. This is performed by a driver or the like from a wired operation panel (not shown) taken out of an intended storage space (not shown). A wired remote controller may be used to perform remote control near the trailer 10.

In the above-described embodiment, the rack 40 is shown as a transported object, but it can also handle a transported object of various shapes such as a box type container.
In the above-described embodiment, the expansion and contraction in the front-rear direction is performed by the multi-stage expansion and contraction cylinder device 18, but this is performed by a rack and pinion type or a type equipped with driving wheels acting on the first upper frame 15. There may be.

[0031]

[0032]

According to the first aspect of the present invention, when a short (small) conveyed object is carried or when the vehicle is running idle, the frame portion of the trailer can be shortened, that is, the conveyed vehicle can be contracted in the front-rear direction. And the lifting device is
And lift it through the hanging frame.
The hooks can be brought into the acting posture in which the hooks are moved closer to each other, so that traveling can be easily performed without waste. After the transportation vehicle is stopped, by extension (moving) the frame portion to the rear, it can counter the lifting device to be transported article, and, hanging
Suspended hooks are moved away from each other via the lowering frame
In the state, the frame part is extended (moved) backward and lifted
After the hanging hook of the device faces the load,
With the rack lowered, suspend it through the hanging frame.
By moving the hooks closer together, both hanging hooks are
It can be locked to the transported object from left and right, and then the hanging frame
By raising the suspension hook through the intermediary, the transported object can be lifted to a predetermined height. Then, by shortening the transport vehicle by contracting the frame part,
The intended transportation and traveling can be performed. At that time, since the transport can be performed with the length direction of the transported object in the front-rear direction (vehicle length direction), there is little restriction on the running width (road width) and the track head and trailer rotate relatively. In addition to this, transporting can be easily performed in a wide range. Sa
After transporting to the destination, perform the opposite of the above.
Thus, the transported object can be lowered. Ie a transport vehicle
The two parties carry out loading and unloading of conveyed goods by their own actions.
I can.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, where A is a side view and B is a rear view when a transport vehicle is transported.

FIG. 2 is a plan view of the transport vehicle during transport travel.

3A is a side view and FIG. 3B is a rear view before the loading operation of the transport vehicle and during idling.

4A is a side view and FIG. 4B is a rear view during loading operation of the transport vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Track head 4 Operating part 5 Bearing device 10 Trailer 11 Vertical axis 11A Vertical axis center 12 Front frame 13 End roller 14 Front outrigger 15 First upper frame 16 Guide groove 17 Second upper frame 18 Telescopic cylinder device 19 Wheel width Changing cylinder device 20 Rear frame 22 Trailer wheel 23 Outrigger width changing cylinder device 24 Rear outrigger 30 Lifting device 31 Clamp width changing cylinder device 33 Hanging cylinder device 34 Lifting hook 40 Rack (transported object) 43 Locked part 45 long objects

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60P 3/40 B62D 63/06

Claims (1)

(57) [Claims] 1. A truck head (1) and a trailer (10).
And this trailer (10) has a track head
A front frame (12) rotatably connected to the main body (2) of (1) around the longitudinal axis (11A) ;
The front frame (12)
Frame part (15, 17) and this frame part (15, 17)
On both sides of the rear through the rear frame (20)
The frame part is constituted by
Min with lifting device of the transported article (40) (30) is provided in the (15, 17), the lifting device (30) are each
A pair of left and right hanging frames (32)
Left and right mounted on these hanging frames (32)
A transport vehicle comprising a pair of hanging hooks (34) .