Sling instrument

Abstract

To provide a sling instrument capable of facilitating high place work and column installation work.SOLUTION: The sling instrument comprises: a main part 11 having a through-hole 11h through which a sling cord SL is inserted; and an engagement part 15 provided in the main part 11 so as to be engaged with a ring-shaped part A of the sling cord SL. The through-hole 11h of the main part 11 has a pair of opposing contact surfaces 12f and 13f with which a surface Sf of the sling cord SL comes into contact. Holding or releasing of a conveyance member T by the cling cord SL can be easily performed. Thus, a burden on a worker engaged in sling work and a work time can be reduced.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a slinging device. [Background technology]

[0002] When bundling and transporting building materials such as wooden pillars and reinforcing bars, slings and belts for lifting are used (see, for example, Patent Documents 1 and 2). Slings and belts for lifting (hereinafter simply referred to as slings) usually have loop-shaped parts (hereinafter referred to as eyes) on both ends, and the building materials are held by the slings by passing one eye through the other eye and tightening the slings while the slings are looped around the building materials.

[0003] Specifically, one eye is passed under the building materials placed on the ground, and the slinging string is placed under the building materials, and in this state, one eye is passed through the other eye. Then, the slinging string becomes a loop, and is wound around the building materials. If the other eye is then moved along the slinging string toward the building materials, the slinging string can be brought into close contact with the building materials, and the building materials are held in a bundled state by the slinging string. In this state, if one eye is hooked onto the hook of a crane, the building materials can be lifted by the crane, and the lifted building materials can be moved to the desired location. After moving to the desired location, the slinging string is removed from the other eye and pulled out from under the building materials, and the slinging string can be removed from the building materials. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-121856 A [Patent Document 2] Jpn. Jpn. Published No. 52-53575 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the transportation of building materials, etc. may be repeated several times. For example, when transporting several building materials, etc., some of the building materials, etc. may be used at the first place where they are transported, and some of the building materials, etc. may be used at the next place where they are transported. In such a case, the above-mentioned slinging work, that is, the work of bundling the building materials, etc. with a slinging string and the work of removing the slinging string from the building materials, etc., are performed every time the building materials, etc. are transported. Some slinging strings are as long as 8m or more, and the work of passing one eye through the slinging string every time the slinging string is wrapped around the building materials, etc., and removing the slinging string from the other eye every time the slinging string is removed from the building materials, etc., is a laborious and time-consuming work for the worker. Therefore, performing these works every time the building materials, etc. are transported increases the burden on the worker and reduces the work efficiency.

[0006] In view of the above circumstances, an object of the present invention is to provide a slinging device which can reduce the burden on a worker during slinging work and shorten the work time. [Means for solving the problem]

[0007] The slinging device of the present invention comprises a main body having a through hole through which the sling cord is inserted, and an engagement portion provided on the main body which is capable of engaging with the loop-shaped portion of the sling cord, and is characterized in that the through hole of the main body has a pair of opposing contact surfaces which come into contact with the surface of the sling cord. Effect of the Invention

[0008] According to the slinging device of the present invention, the transport member can be easily held and released by the sling cord, thereby reducing the burden on the worker performing the slinging work and shortening the work time. [Brief description of the drawings]

[0009] [Figure 1] 1A and 1B are schematic explanatory diagrams of the slinging device 10 of the present embodiment, in which (A) is a schematic side view and (B) is a schematic front view. [Diagram 2] 1A and 1B are schematic perspective views of the slinging device 10 of the present embodiment, in which (A) shows a state in which the shaft member 13 is attached, and (B) shows a state in which the shaft member 13 is removed. [Diagram 3] 1 is a schematic explanatory diagram of the process of attaching the slinging device 10 of this embodiment to a slinging cord SL. FIG. [Figure 4] 1 is a schematic explanatory diagram of the process of attaching the slinging device 10 of this embodiment to a slinging cord SL. FIG. [Diagram 5] 1 is a schematic explanatory diagram of an operation of slinging a transport member T using the slinging device 10 of this embodiment. FIG. [Figure 6] 10A and 10B are schematic explanatory diagrams of slinging devices 10B and 10C according to other embodiments. [Figure 7] 1A and 1B are diagrams showing examples of suspending a transport member T using the slinging device 10 of this embodiment, where (A) is an example of choke suspension and (B) is an example of basket suspension. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The slinging device of this embodiment is a device used when transporting transport members by bundling them with a sling string, and is characterized by its ability to reduce the burden on workers performing slinging work.

[0011] There is no particular limitation on the transported member transported by the slinging device 1 of this embodiment. For example, construction materials such as steel frames and wood, heavy objects, and the like can be listed as transported members.

[0012] The sling used to bundle the transport members by the slinging device 1 of this embodiment may be one having loops at both ends that are generally used for slinging, and there are no particular limitations on the material from which the sling is made or its shape. For example, the sling used to bundle the transport members by the slinging device 1 of this embodiment may be a sling wire made of wire or a sling made of a belt-shaped fiber sling (a so-called belt sling).

[0013] <Slinging device 1 of this embodiment> As shown in FIGS. 1 and 2, a slinging device 10 of the present embodiment includes a main body portion 11 and an engagement portion 15 provided on the main body portion 11.

[0014] <Main body 11> 1 and 2, the main body 11 has a through hole 10h through which the sling SL is inserted. This through hole 10h is formed between a pair of shafts 12, 13 provided on the main body 11. The width L of the through hole 10h is formed to allow the sling SL to be inserted smoothly. For example, the width L of the through hole 10h is formed to be slightly longer than the thickness of the sling SL if the sling SL is a belt sling, and is formed to be slightly longer than the shaft diameter of the sling SL if the sling SL is a sling wire.

[0015] <A pair of shaft portions 12, 13> The pair of shaft portions 12, 13 are shaft-shaped members with a circular cross section whose axial directions are parallel to each other, and are provided so as to connect between a pair of side portions 14, 14 of the main body portion 11 that face each other.

[0016] Of the pair of shaft portions 12, 13, shaft portion 12 is provided at a portion of a pair of side portions 14, 14 of main body portion 11 that is located inward (lower in Figs. 1 and 2) from the tip portions (upper ends in Figs. 1 and 2, hereinafter referred to as a pair of opening forming portions 14a, 14b). Both ends of shaft portion 12 are fixed to the pair of side portions 14, 14 of main body portion 11, respectively. The side surface of shaft portion 12 becomes contact surface 12f that comes into contact with the slinging cord SL when the slinging cord SL is placed in through hole 10h (see Fig. 3).

[0017] Of the pair of shaft parts 12, 13, the shaft part 13 is provided on the tip side of the pair of side parts 14, 14 rather than the shaft part 12. That is, the shaft part 13 is provided between the pair of opening forming parts 14a, 14b of the pair of side parts 14, 14, in other words, in the opening 10a. This shaft part 13 is provided so as to be detachable from the pair of opening forming parts 14a, 14b. Specifically, of the pair of opening forming parts 14a, 14b, a through hole 14g is formed in the opening forming part 14a, and a female screw hole 14s is formed in the opening forming part 14b. The shaft part 13 is a member having a male screw 13s formed at the tip part, and a handle 13m for rotating the shaft part 13 is provided at the base end part. In addition, when the shaft portion 13 is attached to the pair of opening forming portions 14a, 14b with the sling SL placed in the through hole 10h, the side surface of the shaft portion 13 becomes the contact surface 13f that comes into contact with the sling SL (see Figure 3).

[0018] <Engagement portion 15> As shown in Figures 1 and 2, the pair of side portions 14, 14 of the main body 11 are connected at their base ends. For example, as shown in Figures 1 and 2, the pair of side portions 14, 14 are connected at their base ends so that the pair of side portions 14, 14 are substantially U-shaped. An engagement portion 15 is provided at the portion where the base ends of the pair of side portions 14, 14 are connected. This engagement portion 15 is a member whose tip portion is formed into a hook shape, and is formed into a shape that can be hooked onto the loop portion A of the sling SL.

[0019] <Method of using the slinging device 1 of this embodiment> Since the slinging device 1 of this embodiment has the above-mentioned structure, slinging work using the slinging cord SL and transporting work of transporting material T with the slinging cord SL can be performed easily and in a short time. The following describes the case where the slinging device is used for the transporting work of transporting material T with the slinging cord SL.

[0020] First, before performing the slinging work, a slinging string SL is placed in the through hole 10h of the main body 11. Specifically, first, from a state in which the shaft 13 is fixed between a pair of side parts 14, 14 of the main body 11 (see FIG. 2(A)), the female threaded hole 14s of the opening forming part 14b is disengaged from the male thread 13s of the shaft 13, and the shaft 13 is pulled out from the through hole 14g of the opening forming part 14a (see FIG. 2(B)). Then, the through hole 10h of the main body 11 can be brought into communication with the outside via the opening 10a.

[0021] When the through hole 10h of the main body 11 is in communication with the outside through the opening 10a, the sling SL is placed in the through hole 10h of the main body 11 (see Figs. 3(A), (B), and 4(A)). When the sling SL is placed in the through hole 10h of the main body 11, the shaft 13 is inserted from its tip into the through hole 14g of the opening forming part 14a, and the tip of the shaft 13 is screwed into the female threaded hole 14s of the opening forming part 14b with the male thread 13s of the shaft 13. Then, the shaft 13 can be fixed between the pair of opening forming parts 14a, 14b (i.e., between the pair of side parts 14, 14), and the sling SL can be accommodated in the through hole 10h of the main body 11 (see Figs. 3(C) and 4(B)). In other words, the main body 11 can be attached to the sling SL.

[0022] Furthermore, when shaft portion 13 of main body portion 11 is pulled out of through hole 14g of opening forming portion 14a, through hole 10h of main body portion 11 can be made to communicate with the outside via opening 10a, so main body portion 11 can be attached to the slinging cord SL even with one loop-shaped portion A of the slinging cord SL engaged with a crane hook or the like. In the following explanation, it is assumed that one loop-shaped portion A of the slinging cord SL (loop-shaped portion A not shown in FIG. 4) is engaged with a crane hook or the like, and the slinging cord SL is hanging down from the crane hook.

[0023] When the slinging cord SL is thus housed in the through hole 10h of the main body 11, the main body 11 is moved along the longitudinal direction of the slinging cord SL. Specifically, the main body 11 is moved toward one of the looped portions A of the slinging cord SL. At this time, the width L (see FIG. 1(B)) of the through hole 10h of the main body 11 is formed to a width that allows the slinging cord SL to be smoothly inserted, so that the main body 11 can be moved smoothly along the longitudinal direction of the slinging cord SL. For example, the direction in which the shaft members 12 and 13 of the main body 11 are aligned (the vertical direction in FIG. 1) is set to be substantially perpendicular to the surface Sf of the slinging cord SL. As a result, the surface Sf of the sling SL can be brought into contact with neither of the contact surfaces 12f, 13f of the pair of shaft portions 12, 13 or with only one of them, so that the main body portion 11 can be moved smoothly along the longitudinal direction of the sling SL, and the main body portion 11 can be moved toward one of the loop-shaped portions A of the sling SL.

[0024] When the main body 11 has moved to the desired position on the slinging cord SL, the main body 11 is tilted with respect to the surface Sf of the slinging cord SL to secure the main body 11 to the slinging cord SL (see Figs. 3(B) and 4(C)). In other words, the main body 11 is secured to a position on the slinging cord SL where the length from the position where the main body 11 is secured to the other loop-shaped portion A is long enough for slinging. Specifically, the main body 11 is secured to a position where the length is long enough to wrap the slinging cord SL around the transport member T.

[0025] The main body 11 can be fixed to the slinging string SL for the following reason. That is, the width L of the through hole 10h of the main body 11 is formed to a width that allows the slinging string SL to be smoothly inserted, but the main body 11 can be fixed to the slinging string SL by tilting the main body 11 so that the surface Sf of the slinging string SL comes into contact with both of the contact surfaces 12f, 13f of the pair of shaft portions 12, 13. Specifically, when the main body 11 is tilted with respect to the surface Sf of the slinging string SL (for example, when tilted so that the axial direction of the surface Sf of the slinging string SL and the axial direction of the main body 11 approach parallelism), the surface Sf of the slinging string SL comes into contact with both of the contact surfaces 12f, 13f of the pair of shaft portions 12, 13. This increases the frictional resistance between the contact surfaces 12f, 13f of the pair of shafts 12, 13 and the surface Sf of the slinging cord SL, and also causes the slinging cord SL to curve, increasing the resistance to movement of the surface Sf of the slinging cord SL, and fixing main body 11 so that it does not move along the longitudinal direction of the slinging cord SL. Moreover, even if the worker is not holding main body 11, main body 11 will tilt relative to the surface Sf of the slinging cord SL due to its own weight and the friction between the contact surfaces 12f, 13f of the pair of shafts 12, 13 and the surface Sf of the slinging cord SL, so that main body 11 can be stably fixed to the slinging cord SL.

[0026] Furthermore, even if both surfaces Sf of the sling SL are in contact with both contact surfaces 12f, 13f of the pair of shaft portions 12, 13, if the friction generated by that contact is small (for example, if the angle between the axial direction of the surfaces Sf of the sling SL and the axial direction of the main body portion 11 is close to 90 degrees), it is possible to move the main body portion 11 toward one of the loop-shaped portions A of the sling SL, although there is resistance to movement.

[0027] When the main body 11 is fixed to the sling SL, the part of the sling SL on the other loop-shaped portion A side than the main body 11 is passed under the conveying member T. Then, the part of the sling SL on the other loop-shaped portion A side that has passed under the conveying member T is engaged with the engaging portion 15. This allows the part of the sling SL on the other loop-shaped portion A side than the main body 11 to be looped around the conveying member T (FIG. 5(A)).

[0028] When the portion of the sling SL on the other loop portion A side of the main body 11 is wound around the transport member T, the main body 11 is moved along the longitudinal direction of the sling SL. This brings the surface Sf of the sling SL into intimate contact with the surface of the transport member T, so that the transport member T can be tightly bound by the sling SL (FIG. 5(B)).

[0029] Furthermore, the conveying member T can be released from the sling SL by releasing the other loop-shaped portion A that is hooked on the engagement portion 15. In other words, the conveying member T can be released from the sling SL without the need to pull out the sling SL from one of the loop-shaped portions as in the conventional method. Then, once the conveying member T is released from the sling SL, the sling SL can be removed from the conveying member T by pulling out the sling SL from below the conveying member T.

[0030] As described above, by using the slinging device 10 of this embodiment, this series of operations can be performed with one loop-shaped portion A of the slinging cord SL still engaged with the hook of a crane or the like. In other words, by using the slinging device 10 of this embodiment, it is not necessary to remove the slinging cord SL from one loop-shaped portion. This allows the operations to be performed with one loop-shaped portion A of the slinging cord SL still engaged with the hook of a crane or the like, reducing the workload of the worker and shortening the work time.

[0031] Furthermore, one loop-shaped portion A of the slinging cord SL remains engaged with the hook of the crane or the like, which makes it easy to bundle the transported members T with the slinging cord SL again. In other words, one loop-shaped portion A of the slinging cord SL that has been detached from the transported members T remains engaged with the hook of the crane or the like. Then, the transported members T can be bundled with the slinging cord SL simply by passing the part of the slinging cord SL that is closer to the other loop-shaped portion A than the main body 11 under the transported members T and hooking the other loop-shaped portion A side onto the engaging portion 15 and adjusting the position of the main body 11.

[0032] In addition, by using two slings SL to which the slinging device 10 of this embodiment is attached, it is possible to easily change between choke hanging and basket hanging. For example, as shown in FIG. 7(A), by hanging two slings SL to which the slinging device 10 of this embodiment is attached, respectively, around the transporting member T, and by hooking one of the loop-shaped parts A of the two slings SL to the engagement part 15 and adjusting the position of the main body part 11 of the slinging device 10, the transporting member T can be put into a choke hanging state by each sling SL. In this state, by hooking the other loop-shaped part A of the two slings SL to a hook F of a crane, the transporting member T can be choke-hanged by the two slings SL. In addition, by removing one of the loop-shaped parts A from the choke-hanging state from the engagement part 15 and then hooking one of the loop-shaped parts A of the two slings SL to the hook F of a crane, the transporting member T can be basket-hanged by the two slings SL (FIG. 7(B)). That is, it is possible to easily change from choke suspension to basket suspension. When performing basket suspension, the slinging device 10 is moved along the sling SL and fixed in a position that does not interfere with transportation. Also, from the basket suspension state, one of the ring-shaped parts A is removed from the hook F of the crane and the other ring-shaped part A is hooked onto the engagement part 15, and the position of the main body part 11 of the slinging device 10 is adjusted, so that the transport member T can be placed in a choke suspension state by the two slings SL (FIG. 7(A)). That is, it is possible to easily change from basket suspension to choke suspension.

[0033] <Regarding the engagement portion 15> In the above example, the engaging portion 15 is described as being a hook-shaped hook with an open tip, but the engaging portion 15 may be a carabiner-like hook with a member for closing the tip of the hook. Also, the engaging portion 15 does not necessarily have to be hook-shaped as long as it has a structure that can hook and hold the loop portion A of the sling SL.

[0034] Further, there is no particular limitation on the position where the engaging portion 15 is attached to the main body portion 11. For example, as shown in Fig. 6(A), it may be directly attached to the above-mentioned shaft member 12. In other words, the base end of the engaging portion 15 may be fixed to the side surface of the shaft member 12.

[0035] Furthermore, the direction in which engaging portion 15 is attached is not particularly limited, but in order to stably bind conveying members T with the sling SL while the other looped portion A of the sling SL is hooked, it is desirable that line a (see FIG. 1) connecting the base end and tip end of engaging portion 15 is arranged parallel to the direction in which shaft members 12 and 13 are aligned (the up-down direction in FIG. 1) when shaft member 13 is attached to main body 11. Note that "parallel" here also includes the case where line a is slightly inclined to the direction in which shaft members 12 and 13 are aligned.

[0036] <About through hole 10h> In the above example, the opening 10a is provided in the through hole 10h, and the opening 10a is formed between the pair of opening forming portions 14a, 14b of the pair of side portions 14, 14. However, the position where the opening 10a of the through hole 10h is provided is not particularly limited. For example, the opening may be provided at a position between the pair of shaft-shaped portions 12, 13 in one of the pair of side portions 14, 14. In this case, too, a member that is detachably attached to the opening may be provided to block the opening, that is, to close the through hole 10h.

[0037] Furthermore, when an opening is provided in the through hole 10h, a member for closing the opening is not necessarily required. In this case, the opening only needs to be formed in a size and shape such that the slinging string SL can be inserted into the through hole 10h through the opening, and the slinging string SL does not easily fall out of the opening when performing an operation such as hoisting the transport member T after slinging. For example, if an opening having a width narrower than the width of the slinging string SL but wider (or approximately the same) than the thickness of the slinging string SL is provided in the shaft-shaped portion 13, a member for closing the opening is not required. However, in order to stably perform an operation such as hoisting the transport member T after slinging, it is desirable to provide a member for closing the opening.

[0038] Furthermore, in the above example, the case where the opening 10a is provided in the through hole 10h has been described, but the opening does not necessarily have to be provided. As shown in FIG. 6(B), the through hole 11h may be provided in the main body 11C having the engagement portion 15C to form the slinging tool 10C. In this case, the size of the through hole 11h needs to be formed to a size that allows the loop portion A of the slinging string SL to pass through. However, in this configuration, the width L2 of the through hole 11h becomes relatively large, so there is a possibility that the force for fixing the main body 11B of the slinging tool 10C to the slinging string SL may be weakened. On the other hand, if the opening 10a is provided in the through hole 10h as in the above example, the width of the through hole 10h (i.e., the distance between the shaft members 12 and 13) can be narrowed, so that the main body 11 of the slinging tool 10 can be easily fixed to the slinging string SL, and the main body 11 of the slinging tool 10 can be easily and stably fixed to the slinging string SL. [Industrial Applicability]

[0039] The slinging device of the present invention is suitable as a device to be used when bundling and transporting building materials such as wooden pillars and reinforcing bars with a sling. [Explanation of symbols]

[0040] 10 Slinging equipment 11 Main body 11h Through hole 12 Shaft 12f contact surface 13 Shaft 14s female thread hole 13f contact surface 14 Lateral part 14a Aperture forming part 14b Aperture forming part 14g Insertion hole 14s female thread hole 15 Engagement part SL Sling science fiction surface A Ring-shaped part T Transport material

Claims

1. A main body portion having a through hole through which a sling string is inserted; An engaging portion provided on the main body portion and capable of engaging with a loop-shaped portion of a sling cord, The main body portion is The shaft portion has a pair of parallel shaft portions. The pair of shaft portions are The through hole is formed between the pair of shafts, and a pair of opposing contact surfaces is formed by the peripheral surfaces of the pair of shafts with which the surface of the sling comes into contact, The main body portion includes: An opening is provided in communication with the through hole, through which a sling cord is passed when the sling cord is disposed in the through hole, The opening of the main body portion is The through hole is provided at a position intersecting a direction in which the sling is inserted through the through hole, One of the pair of shaft portions is detachably provided to the opening of the main body portion. A slinging device characterized in that a pair of contact surfaces have protrusions that dig into the surface of the sling cord to fix the movement of the sling cord.

2. The one shaft portion is A male thread is formed at the tip, The main body portion is a pair of opening forming portions opposed to each other to form the opening; The pair of opening forming portions include a through hole for inserting the one shaft portion is formed in the one opening forming portion, The other opening forming portion is formed with a female screw hole into which the male screw of the one shaft portion is screwed.

2. The slinging device according to claim 1.

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