Hanging tool falling prevention metal fitting

Abstract

To prevent falling of a handing tool.SOLUTION: A hanging tool falling prevention metal fitting prevents falling of a handing tool 200 fixed to a shaped steel 300 and includes: an engagement member 110 configured to engage with the hanging tool 200; a sandwiching member 120 which sandwiches a flange part 302 of the shaped steel 300; and a connection member 130 which connects the engagement member 110 with the sandwiching member 120. The engagement member 110 has a pair of substantially L shaped engagement pieces 111, 112 including insertion holes (bolt holes 111b and 112b) of the connection member 130 at base side portions, and having engagement claws 111a, 112a configured to engage with engagement holes 201a of the hanging tool 200 at tip side portions.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a metal fitting for preventing a suspender from falling off, which prevents a suspender supporting a pipe or the like from falling off. [Background technology]

[0002] As a hanging tool fall prevention fitting that prevents a hanging tool supporting a pipe or the like from falling off, a fitting that connects the hanging tool and a fixing tool via a bolt and clamps a flange portion of a shaped steel is known. Also known is a fitting that uses a connector that has an engagement portion that engages with the hanging tool and a screw-in portion that the bolt screws into in order to connect the hanging tool (support body) and the bolt, and connects the hanging tool and the fixing tool after the hanging tool is attached to the flange portion of the shaped steel to prevent falling off (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-196391 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when connecting the hoist and the fixing bracket using an engaging portion as described above, it is time-consuming to attach the engaging portion to the hoist, and there is also a risk that the engaging portion will fall off during work.

[0005] The present invention has been made in consideration of the above points, and has an object to easily prevent a sling from falling off. [Means for solving the problem]

[0006] In order to achieve the above objectives, The present invention relates to A hoisting tool fall-off prevention fitting that prevents a hoisting tool fixed by clamping one flange portion of a shaped steel from falling off, An engagement member that engages with the sling; A clamping member that clamps the other flange portion of the shaped steel; a rod-shaped connecting member that connects the engaging member and the clamping member; having The engaging members are each substantially L-shaped, have a through hole formed in a base portion through which the connecting member is inserted, and have a pair of engaging pieces having an engaging claw at a tip portion that engages with an engaging hole formed in the suspending tool, and are configured to sandwich the suspending tool from both sides in a direction parallel to an edge of one of the flange portions of the shaped steel, and engage the engaging claw with the engaging hole of the suspending tool, The connecting member is characterized in that it is configured to connect the engaging member and the clamping member by drawing the base side portion of the engaging member toward the clamping member.

[0007] As a result, by pulling in the base side portions of a pair of approximately L-shaped engaging pieces with the connecting member, the engaging pieces clamp the sling, engaging the engaging claws of the engaging pieces with the engaging holes of the sling and connecting the engaging members to the clamping member, thereby preventing the sling from falling off. Effect of the Invention

[0008] According to the present invention, it is possible to easily prevent the sling from falling off. [Brief description of the drawings]

[0009] [Figure 1] FIG. 4 is a plan view showing the configuration of a hanging tool fall-off prevention fitting. [Diagram 2] FIG. 4 is a side view showing the configuration of the hanging tool fall-off prevention fitting. [Diagram 3] FIG. 2 is a perspective view showing the configuration of a hanging tool fall-off prevention fitting. [Figure 4] FIG. 13 is a plan view showing how to attach the hanging tool fall prevention fitting. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0011] As shown in Figures 1 to 3, the suspension fall prevention fitting 100 pulls the suspension tool 200, which is fixed to the flange portion 301 of the structural steel 300, in the direction of the flange portion 302 to prevent the suspension tool 200 from falling off. An engaging member 110 that engages with the suspension tool 200 and a clamping member 120 that clamps the flange portion 302 of the structural steel 300 are connected by a connecting member 130, thereby preventing the suspension tool 200 from falling off.

[0012] More specifically, the engaging member 110 has a pair of engaging pieces 111 and 112 each having a substantially L-shape. The engaging pieces 111 and 112 have engaging claws 111a and 112a at their tip end portions that engage with engaging holes 201a formed in side walls 201 of the suspender 200. That is, the engaging pieces 111 and 112 are adapted to sandwich the suspender 200 from both sides in a direction parallel to the edge of the flange portion 301 of the shaped steel 300, thereby causing the engaging claws 111a and 112a to engage with the engaging holes 201a of the suspender 200. There is no particular limitation on the method for forming the engaging claws 111a and 112a, but they can be easily formed by bending parts of the tip end portions of the engaging pieces 111 and 112 inwardly toward each other. Bolt holes 111b and 112b, into which male thread portion 130a formed on the end of connecting member 130 is inserted, are formed in the base side portions of engaging pieces 111 and 112. Here, bolt holes 111b and 112b are formed as elongated holes, so that engaging claws 111a and 112a of engaging pieces 111 and 112 can swing relative to connecting member 130 from a closed state as shown in Figure 4(a) to an open state on both sides of side wall 201 of suspender 200 as shown in Figure 4(b).

[0013] A nut 140 is screwed onto the end of the connecting member 130, and when the connecting member 130 is pulled toward the flange portion 302 of the shaped steel 300, the tip portions of the engagement pieces 111 and 112 close as shown in Fig. 4(c), and the engagement claws 111a and 112a engage with the engagement holes 201a of the side wall 201, and the side wall 201 is pulled toward the flange portion 302 to prevent it from falling off. In addition, a crimped portion 160 is provided on the flange portion 302 side of the base portion of the engagement pieces 111 and 112 in 130 via a compression coil spring 170. The base portion of the engagement pieces 111 and 112 are biased by the compression coil spring 170 so that they come into close contact with each other, and the tip portions of the engagement pieces 111 and 112 are biased so that they close even when no force is applied by the connecting member 130 to pull them toward the flange portion 302.

[0014] On the other hand, the clamping member 120 has, for example, a side wall portion 121 in which a clamping recess 121a is formed in which the flange portion 302 of the shaped steel 300 is clamped, and a connecting wall portion 122 in which a bolt hole 122a is formed. A male screw portion 130b formed on an end portion of the connecting member 130 opposite to the side on which the engaging member 110 is provided is inserted into the bolt hole 122a, and a nut 150 is screwed into the male screw portion 130b, whereby the engaging member 110 and the clamping member 120 are connected to each other and the engaging member 110 is drawn toward the flange portion 302 of the shaped steel 300.

[0015] As described above, by retracting the base side portions of a pair of approximately L-shaped engagement pieces 111 and 112 using connecting member 130, engagement pieces 111 and 112 clamp suspender 200, engaging engagement claws 111a and 112a of engagement pieces 111 and 112 with engagement holes 201a of suspender 200, and connecting engagement member 110 and clamping member 120, thereby preventing suspender 200 from falling off.

[0016] In addition, the compression coil spring 170 urges the base side portions of the engagement pieces 111 and 112 to come into close contact with each other and urges the tip portions of the engagement pieces 111 and 112 to close toward each other, making it easy to reliably engage the engagement claws 111a and 112a of the engagement pieces 111 and 112 with the engagement holes 201a, while the engagement pieces 111 and 112 can be opened against the urging force of the compression coil spring 170, making it easy to attach the anti-fall-off fitting 100.

[0017] In addition, by inserting connecting member 130 through bolt holes 111b and 112b formed as elongated holes in the base side portions of engaging pieces 111 and 112, both engaging pieces 111 and 112 can be made swingable, which makes it easy to increase the tolerance for eccentricity when attaching them to the sling 200.

[0018] In the above example, the nut 140 is screwed onto the end of the connecting member 130 on the engaging member 110 side. However, this is not limited to the above. It is sufficient that a crimping portion is provided at the end of the connecting member 130, or that a bolt head is provided to be positioned, or that a head for preventing the engaging member 110 from coming off is provided.

[0019] Also, instead of the crimped portion 160 disposed at the end of the compression coil spring 170, a nut may be screwed in, so that the urging force of the compression coil spring 170 is generated.

[0020] Furthermore, the connecting member 130 is not limited to one having a male thread formed only on the end portion, and a so-called fully threaded bolt may be used. [Explanation of symbols]

[0021] 100 Anti-fall fittings 110 Engagement member 111·112 Engagement piece 111a / 112a Engagement claw 111b·112b Bolt holes 120 Clamping member 121 Side wall 121a Clamping recess 122 Connecting wall 122a Bolt hole 130 Connecting member 130a Male thread 130b Male thread 140 Nut 150 Nut 160 Crimping part 170 Compression coil spring 200 Lifting equipment 201 Side wall 201a Engagement hole 300 section steel 301 Flange part 302 Flange part

Claims

1. A hoisting tool fall-off prevention fitting that prevents a hoisting tool fixed by clamping one flange portion of a shaped steel from falling off, An engagement member that engages with the sling; A clamping member that clamps the other flange portion of the shaped steel; a rod-shaped connecting member that connects the engaging member and the clamping member; having The engaging members are each substantially L-shaped, have a through hole formed in a base portion through which the connecting member is inserted, and have a pair of engaging pieces having an engaging claw at a tip portion that engages with an engaging hole formed in the suspending tool, and are configured to sandwich the suspending tool from both sides in a direction parallel to an edge of one of the flange portions of the shaped steel, and to engage the engaging claw with the engaging hole of the suspending tool, The above-mentioned connecting member is configured to connect the above-mentioned engaging member and the above-mentioned clamping member by drawing in a base side portion of the above-mentioned engaging member toward the above-mentioned clamping member, wherein the above-mentioned hanging tool fall-off prevention fitting is characterized in that

2. The hanging tool fall prevention fitting according to claim 1, The connecting member has a stopper head on the engaging member side and a male threaded portion on the clamping member side, and is configured so that by tightening a nut that screws into the male threaded portion, the base side portion of the engaging member is pulled toward the clamping member side.

3. The hanging tool fall prevention fitting according to claim 2, The metal fitting for preventing a sling from falling off is further characterized in that a compression coil spring is provided on the clamping member side of the engaging member of the connecting member for biasing the engaging claws of the engaging member in a direction in which they close together.

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