JP5349539B2 - Fall-off prevention device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a come-off prevention implement capable of preventing a slinging work rope from coming off from a hook of a heavy load. <P>SOLUTION: The come-off prevention implement 1 that lifts the heavy load 10 through the slinging work rope 13 by putting the slinging work rope 13 on a hook 11 provided at the heavy load 10, and prevents the slinging work rope 13 from coming off from the hook 11 has a body 2 formed of an elastic body attached in a manner to be placed between the tip and the root of the hook 11. Since the body is attached while being placed between the tip and the root of the hook 11, a ring 14 of the slinging work rope 13 is prevented from coming off from the hook 11, thereby preventing an accident such as the fall or the like of the heavy load 10 so that the work of lifting and lowering of the heavy load 10 can be performed safely. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a drop-off prevention device, and particularly effective for preventing a sling rope from falling off a heavy load when lifting or hanging a heavy load via a sling rope by a lifting means such as a crane. The present invention relates to an appropriate fall-off prevention tool.

  In general, when lifting and unloading heavy objects using a lifting means such as a crane, hang a sling rope between the lifting means hook and the heavy object and lift the lifting means hook. , Heavy objects are lifted and lowered through sling ropes.

  In such slinging work that lifts and unloads heavy objects, various measures are taken to prevent accidents such as the slinging rope falling off the hook or heavy object of the lifting means and falling heavy objects. It has been.

  For example, when replacing a permanent switch on a high-voltage overhead electric line or installing or removing a switch for construction, hang a sling rope between a pair of hooks on the switch and connect both ends of the sling rope. Hang the ring of each part on each hook, and wrap the binding wire around each hook in a predetermined shape (e.g., figure 8) in this state, so that both ends of the sling rope can be The ring is prevented from coming off from each hook.

  Patent Document 1 describes a technique related to a transport pallet, and when a heavy article is placed on the transport pallet and transported, a sling wire is placed between the hook of each support frame member of the transport pallet and the hook of the crane. The ring of each sling wire is hung on the hook of each support frame member, and the rubber rod provided at the tip of each hook prevents the ring of each sling wire from coming off from the hook of each support frame member. Yes.

  Further, Patent Document 2 describes a technique related to a mounting wire detachment prevention jig. When a slinging operation is performed, a ring of a sling wire is hung on a hook of a crane, and a disk is placed on the tip side of the hook of the crane. By attaching a jig for preventing the detachment, the ring of the sling wire is prevented from coming off from the hook of the crane.

JP-A-8-337245 JP 2009-234696 A

  However, the method of preventing the sling rope ring from coming off the switch hook by wrapping the bind line around the switch hook requires skill in winding the bind line. It is impossible to completely prevent the sling ring from coming off from the hook of the switch due to a problem in winding the wire.

  In the technique described in Patent Document 1, since a gap is formed between the tip of the rubber rod and the hook of the support frame member, the ring of the sling wire comes off from the hook of the support frame member through this gap. There is a fear, and it is impossible to completely prevent the sling wire ring from coming off the hook of the support frame member.

  Furthermore, the technique described in Patent Document 2 can prevent the ring of the sling wire from coming off from the crane hook in the case of a crane hook with a locking stopper, but in the case of a hook without a locking stopper. It is impossible to completely prevent the sling wire ring from coming off the hook.

  The present invention has been made in view of the above-described conventional problems, and when lifting a heavy load using a lifting means such as a crane and completely hanging it, it is possible to completely prevent the sling rope from coming off the heavy load. It aims at providing the fall prevention tool which can prevent.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention hangs a sling rope on a hook provided on a heavy object, and prevents the sling rope from coming off from the hook when the heavy object is lifted and hung through the sling rope. It is a prevention tool, and has a main body made of an elastic body that is mounted so as to be spanned between a tip end portion and a root portion of the hook, and the main body has a hole through which the root portion of the hook is inserted into one end portion. And the other end has a hole through which the tip is inserted, the diameter of each hole is set smaller than the diameter of the hook, and the dimension between the centers of the holes is the root of the hook. It is characterized by being set smaller than the center-to-center distance between the part and the tip part .

According to the drop-off preventing device of the present invention, the hook of a heavy object is inserted into the hole at one end of the main body, the one end of the main body is positioned at the base of the hook, the sling rope is hung on the hook, and the tip of the hook Is inserted into the hole at the other end of the main body, so that the main body can be mounted between the base and the tip of the hook with the sling rope hung on the hook. The ring of the sling rope can be prevented from coming off from the hook.
In this case, the main body is formed of an elastic body, the diameter of each hole of the main body is set smaller than the diameter of the hook, and the dimension between the centers of both holes of the main body is the center between the root portion and the tip portion of the hook. Since the distance is set smaller than the distance between them, it is possible to attach the main body in a tensioned state between the base part and the tip part of the hook and without loosening between the hook and each hole. It is possible to prevent the main body from falling off between the base portion and the tip portion of the hook, and to effectively prevent the sling rope from coming off the hook.

  In the present invention, the main body may have a band plate shape.

  According to the fall-off prevention device of the present invention, a sling rope is hung on a heavy load hook, and in this state, a belt-plate-like main body is hung between the base portion and the tip portion of the hook, The rope can be prevented from coming off the hook.

  Furthermore, in the present invention, the main body may have a rod shape.

  According to the drop-off prevention device of the present invention, a sling rope is hung on a heavy load hook, and in this state, the rod-shaped main body is hung between the base portion and the tip end portion of the hook, It can be prevented from coming off the hook.

Further, in the present invention, the other end of the main body is bent more than double, and a hole through which the tip of the hook is inserted is provided in each piece of the bent portion. Also good.

According to the drop-off preventing device of the present invention, by inserting the tip of the hook into the hole of both pieces of the double-folded portion of the other end portion of the main body, the restoring force of the double-folded portion is used. The other end of the main body can be prevented from falling off from the tip of the hook, and the sling rope can be effectively prevented from coming off the hook.

As described above, according to the drop-off prevention device of the present invention, the heavy body is mounted so that the main body is hung between the base portion and the tip portion of the hook in the state where the sling rope is hung on the hook. This prevents the sling rope from coming off the hook.
In this case, the main body is formed of an elastic body, the diameter of each hole of the main body is set smaller than the diameter of the hook, and the dimension between the centers of both holes of the main body is the center between the root portion and the tip portion of the hook. Since the distance is set smaller than the distance between them, it is possible to attach the main body in a tensioned state between the base part and the tip part of the hook and without loosening between the hook and each hole. It is possible to prevent the main body from falling off between the base portion and the tip portion of the hook, and to effectively prevent the sling rope from coming off the hook.
Therefore, when lifting or hanging heavy objects, the sling rope will not come off the heavy load hooks and the heavy objects will not fall, and the heavy objects can be lifted and lowered safely. Can do.

It is the top view which showed one Embodiment of the fall-off prevention tool by this invention. It is a front view of FIG. It is the front view which showed the state which bent the other end part of the drop-off prevention tool of FIG. It is explanatory drawing which showed the mounting state of the drop-off prevention tool. It is explanatory drawing which showed the mounting state of the drop-off prevention tool of FIG. It is explanatory drawing which showed the attachment procedure of the drop-off prevention tool of FIG. 1, Comprising: It is explanatory drawing which showed the state which penetrated the base part of the hook in the 1st hole of a main body. It is explanatory drawing which showed the attachment procedure of the drop-off prevention tool of FIG. 1, Comprising: It is explanatory drawing which showed the state which hung the ring of the sling rope on the hook. It is explanatory drawing which showed the attachment procedure of the drop-off prevention tool of FIG. 1, Comprising: It is explanatory drawing which showed the state which penetrated the front-end | tip part of the hook in the 2nd hole of the main body. It is explanatory drawing which showed the attachment procedure of the drop-off prevention tool of FIG. 1, Comprising: It is explanatory drawing which showed the state which has penetrated the front-end | tip part of the hook in the 2nd hole of a main body, and a 3rd hole. It is the top view which showed the modification of the drop-off prevention tool.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of a drop-off prevention device according to the present invention. The dropout prevention device 1 of the present invention is effective for lifting and unloading heavy objects by a lifting means such as a crane or a winch. In this embodiment, a permanent switch or a The switch for construction is a heavy object, and the dropout prevention tool 1 of the present invention is applied to replacement work, attachment work, and removal work of the switch 10 as a heavy work.

  As shown in FIG. 4, the switch 10 has, for example, a substantially rectangular parallelepiped shape with a weight of about 30 to 100 kg, and is installed on the upper part of a utility pole near the ground height of 8 m. Therefore, lifting means such as a pulley and a winch of an aerial work platform are used for lifting and lowering the switch 10.

  In order to perform the lifting and lowering work of the switch 10 by lifting means such as a winch, for example, a sling rope 13 is spanned between a pair of hooks 11 and 11 provided in the upper center portion of the switch 10. Then, the hook 15 of the lifting means is hung on the sling rope 13 and the hook 15 is lifted and lowered, thereby lifting and lowering the switch 10.

  Specifically, one sling rope 13 is used, and the rings 14 at both ends of the sling rope 13 are hung on the hooks 11 of the switch 10, so that one hook 11 is connected between the hooks 11, 11 of the switch 10. The sling rope 13 is hung, and the hook 15 of the lifting means is hung on the center of the sling rope 13 in this state.

  As shown in FIGS. 5 to 8, each hook 11 of the switch 10 is formed by bending a round bar into a U shape, and has a downward U shape on both sides of the upper center of the switch 10. They are connected together by welding or the like. By passing each hook 11 through the ring 14 at both ends of the sling rope 13, the sling rope 13 is stretched between the hooks 11 and 11.

  The sling rope 13 is not particularly limited as long as it satisfies a predetermined standard, and a sling wire rope can be used in addition to a sling rope made of chemical fiber or natural fiber. In the present embodiment, a sling rope 13 made of a chemical fiber is used.

  Although not shown, two sling ropes 13 and 13 are used, and the ring 14 at one end of each sling rope 13 is hung on each hook 11 of the switch 10, and the ring 14 at the other end is hooked by a hook 15 as a lifting means. The two sling ropes 13 and 13 may be hung between the hooks 11 of the switch 10 and the hooks 15 of the lifting means.

  As shown in FIGS. 1 to 3, the dropout prevention tool 1 of the present embodiment includes a band plate-shaped main body 2 formed of an elastic body such as rubber. One end of the main body 2 is provided with a circular first hole 8 through which the base 11a of the hook 11 of the switch 10 is inserted, and the tip 11b of the hook 11 of the switch 10 is connected to the other end. A circular second hole 4 and a third hole 5 to be inserted are provided at a predetermined interval.

  The base portion 11a of the hook 11 of the switch 10 is inserted into the first hole 3 at one end portion of the main body 2, and the second end portion of the main body 2 is folded in a doubled manner. By inserting the tip 11b of the hook 11 of the switch 10 into the second hole 4 and the third hole 5, the main body 2 is hooked between the root 11a and the tip 11b of the hook 11 of the switch 10. Mounted in the passed state.

  The diameters of the first hole 3, the second hole 4, and the third hole 5 of the main body 2 are set to be slightly smaller than the diameter of the hook 11 of the switch 10. Further, the dimension between the centers of the first hole 3 and the second hole 4 of the main body 2 is set to be slightly smaller than the distance between the centers of the base part 11a and the tip part 11b of the hook 11 of the switch 10. ing.

  Thereby, the main body 2 is in a state of being tensioned between the base portion 11a and the tip end portion 11b of the hook 11 of the switch 10, and the looseness is eliminated between the hook 11 and each of the holes 3, 4, and 5. Therefore, the main body 2 can be prevented from falling off the hook 11 of the switch 10.

  Moreover, since the other end part of the main body 2 is attached to the front end part 11b of the hook 11 of the switch 10 in a double-folded state, the main body 2 is restored by a restoring force to return the bent part to the original state. The lower piece of the other end of the switch can be pressed against the tip 11b of the hook 11 of the switch 10, and the other end of the main body 2 can be prevented from falling off from the tip 11b of the hook 11 of the switch 10. .

  And in order to perform the operation | work of lifting / lowering the switch 10 using the drop prevention tool 1 of this Embodiment comprised as mentioned above, first, as shown in FIG. 2 are prepared, and each hook 11 of the switch 10 is inserted into the first hole 3 at one end of the main body 2 of each drop-off prevention device 1, and the main body 2 is moved in the direction of the root portion 11a of each hook 11. By doing so, one end portion of the main body 2 of each drop-off prevention device 1 is positioned at the root portion 11 a of each hook 11.

  Next, as shown in FIG. 6, each hook 11 of the switch 10 is inserted into the rings 14 at both ends of the sling rope 13, so that the sling rope 13 is hung between the hooks 11, 11 of the switch 10. hand over.

  Next, as shown in FIG. 7, the tip end portion 11 b of each hook 11 of the switch 10 is inserted into the second hole 4 of the main body 2 of each dropout prevention device 1. In this case, the dimension between the centers of the first hole 8 and the second hole 9 of the main body 2 of each drop-off prevention tool 1 is between the centers of the root portion 11a and the tip end portion 11b of each hook 11 of the switch 10. Since the main body 2 of each drop-off prevention device 1 is extended, the tip end portion 11b of each hook 11 of the switch 10 is inserted into the second hole 4.

  Next, as shown in FIG. 8, the other end portion of the main body 2 of each drop-off preventing device 1 is bent downward between the second hole 4 and the third hole 5 in the drawing, and is directed in the direction of the one end portion. A double end is formed by folding back, and the tip end portion 11b of each hook 11 of the switch 10 is inserted into the third hole 5 of the lower piece of the bent portion.

  In this manner, the sling ropes 13 are spanned between the hooks 11 of the switch 10, the drop prevention tool 1 is attached to each hook 11, and a winch or the like is provided at the center in the longitudinal direction of the sling rope 13. The hook 15 of the lifting means is hung (see FIG. 4).

  Then, by lifting and lowering the hook 15 by operating the lifting means, the lifting and lowering work of the switch 10 can be performed via the sling rope 13, and the permanent opening and closing installed at the upper part of the utility pole. It is possible to perform construction such as replacement of the device 10, installation of the construction switch 10 to the upper part of the utility pole, and removal.

  In the dropout prevention device 1 of the present embodiment configured as described above, since it is mounted so as to be spanned between the root portion 11a and the tip end portion 11b of each hook 11 of the switch 10, It is possible to prevent the ring 14 of the sling rope 13 from being detached from the hooks 22 of the switch 10 when the switch 10 is lifted or lowered, and the lifting and lifting work of the switch 20 can be performed safely. .

  In this case, the main body 2 of the drop-off preventing device 1 has a dimension between the centers of the first hole 3 and the second hole 4 between the base part 11a and the tip part 11b of each hook 11 of the switch 10. Since it is set smaller than the distance and is stretched between the root portion 11a and the tip end portion 11b of each hook 11 of the switch 10, it can be prevented from falling off from each hook 11, It is possible to reliably prevent the ring 14 of the rope 13 from coming off the hooks 11 of the switch 10.

  Further, the other end portion of the main body 2 of the drop-off preventing device 1 is double-folded, and a second hole 4 and a third hole 5 are provided in the bent portion, and the second hole 4 and the third hole 5 are provided. Since the tip end portion 11b of each hook 11 of the switch 10 is inserted into the hole 5, the other end portion of the main body 2 of the drop-off prevention device 1 is connected to each hook 11 of the switch 10 by the restoring force of the bent portion. Can be prevented from falling off from the front end portion 11b, and the ring 14 of the sling rope 13 can be reliably prevented from coming off from the hooks 11 of the switch 10.

  In the above description, the other end portion of the main body 2 of the drop-off preventing device 1 is folded twice, but the other end portion of the main body 2 may be folded three or more times. When bending three or more layers, it is only necessary to provide a hole through which the tip 11b of the hook 11 of the switch 10 is inserted in each piece of the bent portion.

  Moreover, you may mount | wear between the base part 11a and the front-end | tip part 111b of the hook 11 of the switch 10 in the state with a band plate shape, without bending the other end part of the main body 2. FIG. In that case, one hole is provided in each of the one end portion and the other end portion of the main body 2, and the dimension between the hole in the one end portion and the hole in the other end portion is determined with the root portion 11 a of the hook 11 of the switch 10. What is necessary is just to mount | wear between the base part 11a and the front-end | tip part 11b of the hook 11 of the switch 10 in the state which set shorter than the distance between the centers of the front-end | tip parts 11b, and was tensioned the main body 2. FIG.

  Furthermore, in the above description, the main body 2 is formed in the shape of a band plate. However, as shown in FIG. 9, the main body 2 is formed in a rod shape, and annular ring portions 6 are formed at both ends of the main body 2 formed in this rod shape. And the inner side of the ring portion 6 may function as a first hole 3 through which the root portion 11a of the hook 11 of the switch 10 is inserted and a second hole 4 through which the tip portion 11b is inserted. .

  Furthermore, in the above description, the drop-off prevention device 1 of the present invention is applied to the lifting and lowering work of the switch 10 with the switch 10 as a heavy load. However, various other heavy loads are lifted and lowered. The drop-off prevention tool of the present invention may be applied to the above work, and in this case, the same effect is obtained.

DESCRIPTION OF SYMBOLS 1 Drop-off prevention tool 2 Main body 3 1st hole 4 2nd hole 5 3rd hole 6 Ring part 8 1st hole 9 2nd hole 10 Heavy load (switch)
11 hook 11a root 11b tip 13 sling rope 14 ring 15 hook

Claims (4)

A hanging prevention tool that prevents the sling rope from coming off from the hook when hanging and hanging the heavy load through the sling rope by hanging a sling rope on a hook provided on a heavy load,
Having a main body made of an elastic body mounted so as to be spanned between a tip portion and a root portion of the hook;
The main body has a hole through which the base of the hook is inserted at one end, and a hole through which the tip is inserted at the other end, and the diameter of each hole is set smaller than the diameter of the hook. And a dimension between the centers of the holes is set smaller than a center-to-center distance between the base portion and the tip portion of the hook .   The dropout prevention tool according to claim 1, wherein the main body has a band plate shape.   The dropout prevention tool according to claim 1, wherein the main body has a bar shape. 3. The other end of the main body is bent more than double, and a hole through which the tip of the hook is inserted is provided in each piece of the portion bent more than double. The fall-off prevention device described in 1.

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