JP2531528Y2 - Lifting connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hoisting device for connecting a hoisting device and a heavy object to be hoisted by the hoisting device.

(Prior Art) Conventionally, this type of lifting connection tool is composed of a pulley having a connection ring at an upper portion and a wire hung on the pulley and having shackles at both ends. When lifting a heavy object such as a pillar, the pulley is connected to the hook at the tip of a crane wire of a crane or the like via the connection ring while the wire is hung on the pulley, and provided at both ends of the wire. A shackle is connected to the steel column or an auxiliary connecting member previously connected to the steel column, and the steel column is lifted by a crane or the like.

(Problem to be Solved by the Invention) By the way, in the conventional lifting connector using the above-mentioned wire, an annular portion for mounting the shackle by folding back each end and clipping each end is provided at both ends of the wire. Each is formed.

However, since a large-diameter wire is used to lift a heavy object such as a steel column, the annular portion becomes very large, so that the annular portion of the wire can be inserted into the upper portion of the idler wheel in the pulley. It is necessary to provide a large insertion portion, and as a result, even when a shackle is attached to each of the annular ends of the wire hooked on the pulley, the shackle with the wire may come off from the insertion portion. was there. That is, at the time of connecting the shackle to the steel column or the auxiliary connecting tool provided on the steel column, the shackle on the opposite side to the shackle to be connected to the steel column side comes out of the insertion portion and passes from the pulley together with the wire. There was a problem of falling off.

Further, when the wire is bent and used, since the wire has a tensioning action, it is very difficult to handle, the workability is poor, and there is a problem that the wire is bulky and cannot be stored compactly during storage.

The present invention has been devised in view of the above-mentioned problems, and its purpose is to use a link chain in which link elements are connected in a chain so that attachment and detachment operations to and from a heavy object can be performed satisfactorily. It can be lifted in the horizontal suspension state from the direction, and furthermore, the connecting body can be reduced in size, and can be stored in a bulky and compact manner when stored, and the link chain can be reliably prevented from falling off from the connecting body. In this way, not only can the connection work of the lifting connection tool to the heavy load be improved, but even if one end of the link chain comes off the hook of the heavy load, It can reliably prevent falling, and when lifting heavy objects at a position offset from the center of gravity, the heavy objects can be lifted in an inclined manner, and the link chain And to provide a connecting member lifting it hanging on alleviating state burden.

(Means for Solving the Problems) In order to solve the above object, the present invention provides a connecting tool body (1) and a connecting ring (9) for connecting the connecting tool body (1) to the hoisting device. And a link chain (11) in which link elements are connected in a chain.
A pair of frames (2) facing each other at a predetermined interval
(3), a load sheave (6) rotatably supported between the frames (2) and (3) and having a plurality of chain engaging portions, and a load sheave (6) positioned above the load sheave (6). ,
A chain retainer (7) having a length facing at least two link elements of the chain suspended on the load sheave (6), and a connection for a connection ring extending between the frames (2) and (3); A shaft (8), and the connecting shaft (8) has a cross joint (90) and swings on the cross joint (90) by a joint pin (91) in a direction orthogonal to the connecting shaft (8). The connecting ring (9), which is freely connected, is swingably connected, and the chain (11) hung on the load sheave (6) has the load sheave (6) at both ends thereof. ) And a pair of joint bodies (12a) sized not to pass between the chain presser (7)
Coupling joint (1) comprising a joint pin (12b) for connecting the joint body (12a)
2).

(Operation) However, since the link chain (11) in which the link elements are connected in a chain is used, there is no tension effect as in a wire, and it is possible to bend in any of the front, rear, left and right directions. Thus, the work of attaching and detaching the lifting connector to and from the heavy object can be performed favorably, so that not only the connecting ring (9) can swing around the connecting shaft (8) but also the connecting shaft. (8) is pivotable about a joint pin (91) orthogonal to the connection shaft (8) through a cross joint (90) provided in the connection member (90). Therefore, the heavy object can be freely swung back and forth and left and right, so that a heavy object can be lifted in a state of being horizontally suspended from an oblique direction.

In addition, since the link chain (11) is used, the diameter of the load sheave (6) having a plurality of chain engaging portions for engaging the link elements of the link chain (11) is determined by using a roller chain, for example. Since the diameter of the sprocket provided with the roller chain can be made smaller than that of the sprocket, and the link chain (11) and the load sheave (6) are used, the diameter of the chain hung on the load sheave (6) can be reduced. Since the chain retainer (7) for preventing the lifting need only have a length facing at least two link elements of the chain (11), the size of the connecting member main body (1) can be reduced. This, combined with the fact that the link chain (11) can be bent forward and backward and left and right, makes it easy to handle, and is compact and compact when stored. It can be stored.

At both ends of the link chain (11), a pair of joint bodies (12a) sized to prevent entry into the connector body (1), and a joint body (12a).
Since a coupling joint (12) comprising a joint pin (12b) for coupling a) is provided, for example, when a shackle is attached to the coupling joint (12) and a heavy object is lifted through the shackle. Since the link chain (11) does not fall out of the connecting member main body (1), the workability of connecting the lifting connecting member to the heavy object can be improved, and the heavy object can be removed as described above. When the heavy object is lifted by being connected to the link chain (11) via the shackle, the shackle provided on one side of the coupling joint (12) may become heavy due to forgetting to fasten its fixing bolt or the like. The shackle may jump up due to the recoil when it comes off, and may come off the coupling joint (12). However, since the coupling joint (12) is large enough not to come off from the link chain (11) and to prevent entry into the connecting member body (1), (11) can be reliably prevented from being pulled out of the connecting member main body (1), so that the suspended heavy object can be prevented from dropping.

In addition, when lifting an unbalanced heavy object having a hook at a position deviated to one side with respect to the center of gravity, the load sheave (6) rotates freely and the load sheave of the link chain (11) is lifted. Since the length from (6) to each end can be freely adjusted and changed, even when lifting at a position deviated from the center of gravity of a heavy object, that is, even when lifting a long heavy object on one side in the length direction thereof Thus, the heavy object can be lifted in an inclined manner, and can be lifted in a state where the load on the link chain is reduced.

(Embodiment) The drawings show a lifting connector according to the present invention. In FIGS. 1 to 4, (1) is a central portion between a pair of frames (2) and (3) facing each other at a predetermined interval. And a supporting shaft (4), and a bearing (5) mounted on the supporting shaft (4).
A load sheave (6) having a plurality of chain hooks is rotatably supported through the link sheave, and a link chain (11) hooked on the load sheave (6) above the load sheave (6). ), A chain retainer (7) having a length opposed to at least two link elements, and a connection for a connection ring between the frames (2) and (3) at a position above the chain retainer (7). This is a connecting tool main body having a shaft (8) provided thereon.

As shown in FIG. 4, each of the support shaft (4) and the connection shaft (8) has a head (41) (81) at one end and a locking groove (42) (82) at the other end. The supporting shaft (4) and the connecting shaft (8) are provided with the frames (2) and (3).
The support shaft (4) and the connection shaft (8) are inserted through the through holes (21) (31) and (22) (32) formed in
As shown in FIG. 2, split washers (10a) (10b) are fitted into the engaging grooves (42) (82) on the insertion side of the frame (2), and the frame (2) of each of these washers (10a) (10b) is fitted. ), The support shaft (4) and the connecting shaft (8) are detachably attached to the frames (2) and (3).

Further, the connecting shaft (8) has a cross joint (90) as shown in FIG.
A connecting ring (9), which is swingably connected by a joint pin (91) in a direction perpendicular to the connecting shaft (8), is swingably connected. The connecting ring (9) is engaged and connected to a tip hook of a crane wire of, for example, a crane used as the hoisting device (A).

(11) is a link chain (11) of a predetermined length in which link elements are connected in a chain, and the link chain (1)
1) is a pair of joint bodies which are hung on the load sheave (6) of the connecting member body (1) and which do not pass between the load sheave (6) and the chain retainer (7) at both ends. (12a) and a coupling pin (12) composed of a joint pin (12b) for connecting the joint body (12a), and a free-end-side joint body (12a) (12a) of the coupling joint (12). Shackles (13) and (13) are attached to 12a).

In FIG. 2, reference numeral (14) denotes an auxiliary connecting tool connected to the shackle (13), and the auxiliary connecting tool (14) includes a holding body (15) having an insertion groove (15a); Insertion groove (15a)
And a swivel joint (17) attached to the upper part of the holding body (15). The lock pin (16) is connected to the shackle (13) via the swivel joint (17). Insert the lock pin (1) into the insertion groove (15a).
The steel column (T) provided with the through-hole is supported through through 6).

In FIG. 4, (18) is the frame (2)
And (19) and (19) which are fixed around the through holes (22) and (23) of the connection shaft (8) of the frames (2) and (3). It is a seat.

The connecting device according to the present invention is configured as described above. For example, when a steel column (T) is lifted by a crane (A), as shown in FIG.
The connecting ring (9) is engaged and connected to the tip hook of the crane wire of (1), and the connecting tool body (1) supported by the connecting ring (9) is suspended in a suspended manner, while the connecting tool main body (1) is previously supported on the steel column (T). The auxiliary connector (14) is connected.

Shackles (13) and (13) are provided on the free-end-side joint bodies (12a) and (12a) of the coupling joints (12) and (12) provided at both ends of the link chain (11). As shown in FIG. 2, the shackles (13) and (13) are connected to the auxiliary connecting devices (14) and (14), and the crane wire of the crane (A) is hoisted by lifting the crane wire of the crane (A) in this connection state. The steel column (T) is lifted through the tool (14).

Therefore, even when the chain (11) hung on the load sheave (6) may move during the operation of connecting the shackles (13) and (13) to the steel column (T), the steel frame column may be moved. A coupling joint (12) provided with a shackle (13) on the opposite side to one shackle (13) to be connected to (T) abuts on the load sheave (6) and the chain retainer (7). That movement is blocked,
This prevents the link chain (11), in other words, the shackle (13) on the opposite side from coming out of the connector body (1).

Further, when the link chain (11) is used, unlike the case where a wire is used, there is no tensioning action, and the link chain (11) can be bent in any of the front and rear directions and the left and right directions. ) (13) Auxiliary coupler (14)
It can be easily and easily attached to and detached from the device, and workability can be improved. In addition, the connecting ring (9) is not only made swingable about the connecting shaft (8), but also connected to the connecting shaft (8) via a cross joint (90) provided on the connecting shaft (8). ), The connecting ring (9) can be freely swung back and forth and left and right with respect to the connecting member body (1). An object can also be lifted horizontally from a diagonal direction.

In addition, since the link chain (11) is used, the diameter of the load sheave (6) having a plurality of chain engaging portions for engaging the link elements of the link chain (11) is determined by using a roller chain, for example. Since the diameter of the sprocket provided with the roller chain can be made smaller than that of the sprocket, and the link chain (11) and the load sheave (6) are used, the diameter of the chain hung on the load sheave (6) can be reduced. Since the chain retainer (7) for preventing the lifting need only have a length facing at least two link elements of the chain (11), it is possible to reduce the size of the connector body (1). This, combined with the fact that the link chain (11) can be bent forward and backward and left and right, makes it easy to handle, and is compact and compact when stored. It can be stored.

Further, when the link chain (11) having the coupling joint (12) is connected to a heavy object through the shackle, and the lifting operation of the heavy object is performed in such a state, the coupling joint (12) is used. Even if the shackle provided on one side of the shackle comes off from a heavy object due to forgetting to fasten the fixing bolt, etc., and the shackle jumps up due to the reaction when it comes off, it may come off the coupling joint (12). Since the coupling joint (12) is large enough not to come off from the link chain (11) and to prevent entry into the connecting member main body (1), the link chain (11) is It is possible to reliably prevent the pulling-out of the connecting member body (1) and to prevent the suspended heavy object from dropping.

In addition, when lifting an unbalanced heavy object having a hook at a position deviated to one side with respect to the center of gravity, the load sheave (6) rotates freely, and the link chain (11) of the link chain (11) is rotated. Since the length from the load sheave (6) to each end can be freely adjusted and changed, when lifting at a position deviated from the center of gravity of a heavy object, that is, lifting a long heavy object at one side in its length direction Even in this case, the heavy object can be lifted in an inclined manner, and can be lifted with the load on the link chain (11) reduced.

When replacing the shackles (13) and (13) together with the link chain (11) having the coupling joint (12) and when replacing the connecting ring (9), the respective screws are removed and the shackles are removed. Each washer (10a) (10b) is engaged with the retaining groove (42) (8) of the support shaft (4) or the connecting shaft (8).
The chain (11) or the connection ring (9) is removed from the frame (2) or (3) by removing the support shaft (4) or the connection shaft (8) from the frame (2) or (3).
A chain (11) with a coupling joint (12) with the desired shackle (13) (13)
Alternatively, the connection shaft is replaced with a desired connection ring (9), and thereafter, the support shaft (4) or the connection shaft (8) is inserted, and the locking groove (42) of the support shaft (4) or the connection shaft (8) ( 82) and the washer (10
a) (10b) may be fitted and these washers (10a) (10b) may be screwed to the frame (2).

This enables shackles with different shapes and sizes (13)
Alternatively, it can be freely selected according to the weight to which the connecting ring (9) is lifted.

(Effects of the Invention) As described above, according to the present invention, since the link chain (11) in which the link elements are connected in a chain is used, there is no tension effect like a wire, and any of the front, rear, right and left directions is used. Can also be bent, so that the lifting connector can be attached to and detached from a heavy object satisfactorily, and the connecting ring (9) can be swung about the connecting shaft (8). In addition to the above, the connecting shaft (8) is provided via a cross joint (90) provided on the connecting shaft (8).
The connecting ring (9) can be freely swung back and forth and left and right with respect to the connecting member main body (1). Can also be lifted in a horizontal suspension state from an oblique direction. In addition, since the link chain (11) is used, the load sheave (6) having a plurality of chain hooks for hooking the link elements of the link chain (11).
The diameter of the link chain (1) can be made smaller than that of the sprocket provided with a sprocket for hanging the roller chain using, for example, a roller chain.
1) and the load sheave (6), the chain presser (7) hung on the load sheave (6) for preventing the chain from floating is attached to at least two link elements of the chain (11). Since it is only necessary to have the opposing length, the size of the connector main body (1) can be reduced,
This allows the link chain (11) to bend in any of the front and rear directions and the left and right directions, so that it is easy to handle, and can be stored in a bulky and compact manner when stored.

In addition, at both ends of the link chain (11), a pair of joint bodies (12a) sized not to pass between the load sheave (6) and the chain retainer (7), and these joint bodies (12a) Joint pin (12
b), the coupling chain (11) is provided. For example, when a shackle is attached to these coupling joints (12) and a heavy object is lifted through the shackle, the link chain (11) is It does not fall out of the connector body (1)
It is possible to improve the workability of the connection of the lifting connection tool to the heavy object, and to connect the heavy object to the link chain (11) via the shackle to lift the heavy object. In such a case, the shackle provided on one side of the coupling joint (12) comes off the heavy object due to forgetting to tighten the fixing bolt, and the shackle jumps up due to the reaction when it comes off, and comes off the coupling joint (12). The coupling joint (12) does not come off from the link chain (11) and does not pass between the load sheave (6) and the chain retainer (7). Therefore, it is possible to reliably prevent the link chain (11) from coming out of the connecting member main body (1), and therefore, the suspended heavy object falls. It can be prevented from that.

In addition, when lifting an unbalanced heavy object having a hook at a position deviated to one side with respect to the center of gravity, the load sheave (6) rotates freely and the load sheave of the link chain (11) is lifted. Since the length from (6) to each end can be freely adjusted and changed, even when lifting at a position deviated from the center of gravity of a heavy object, that is, even when lifting a long heavy object on one side in the length direction thereof In addition, the heavy object can be lifted in an inclined manner, and can be lifted while reducing the load on the link chain (11).

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a connecting device according to the present invention, FIG. 2 is an explanatory view showing a state where an auxiliary connecting device is connected to the connecting device,
FIG. 3 is a side view of the connector main body, FIG. 4 is a longitudinal sectional view, and FIG. 5 is an explanatory view showing a use state. (1) Connection body (2) (3) Frame (6) Load sheave (7) Chain holder (8) Connection shaft (9) Connection ring (11) Link chain (12) Coupling joint (12a) Joint body (12b) Joint pin (90) Cross joint (91) Joint pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A hoisting connection tool for connecting a hoisting device and a heavy object to be hoisted by the hoisting device, comprising: a connecting ring (9) engaged with and connected to the hoisting device; ), And a link chain (11) in which link elements are connected in a chain, and the connector body (1) includes a pair of frames (1) opposed to each other at a predetermined interval. 2) (3), a load sheave (6) rotatably supported between the frames (2) and (3) and having a plurality of chain engaging portions, and a load sheave (6) above the load sheave (6). A chain retainer (7) having a length opposed to at least two link elements of the chain, which is positioned on the load sheave (6), and a connection extending between the frames (2) and (3). And a connecting shaft (8) for a ring. The connecting ring (9) is pivotally connected to the cross joint (90) by a joint pin (91) in a direction orthogonal to the connecting shaft (8). The chain (11) hung on the load sheave (6) has a pair of ends each having a size that does not pass between the load sheave (6) and the chain retainer (7). A coupling joint (12) comprising a joint body (12a) and a joint pin (12b) for connecting the joint body (12a).