Clamp for main rope

Abstract

To provide a clamp for main ropes allowing a worker to easily mount it without being restricted by mounting conditions.SOLUTION: A clamp for a main rope comprises: a first fitting plate 10 to be fitted to one side of a steel material; a second fitting plate 20 to be fitted to the other side of the steel material; and a main rope locking hook 14 provided on at least one of the first fitting plate and the second fitting plate. The first fitting plate includes a locking part 13 protruding onto the first fitting plate, and the second fitting plate includes a rotational lever 22 rotationally and pivotally supported by the second fitting plate and an engaging member 23 pivotally supported by the rotational lever and engaging with the locking part of the first fitting plate. When the rotational lever is rotationally turned, the engaging member draws the locking part and the first fitting plate, and the second fitting plate sandwiches the steel material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lifeline clamp that can be attached, for example, to fixed steel material. [Background technology]

[0002] Conventionally, safety equipment to prevent workers from falling from high places includes safety belts worn around the waist of workers. The safety belt is equipped with a hook, and by hanging this on a lifeline, the worker is prevented from falling from high places.

[0003] Furthermore, since the life rope needs to be able to adequately support the weight of the worker, it is common practice to attach a clamp to a fixed steel material or the like and tension the life rope on the clamp.

[0004] As a conventional clamp, for example, Patent Document 1 discloses a clamp as shown in FIG. 1 of the document, which tensions a life rope as shown in FIG. 5 of the document. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-029792 Summary of the Invention [Problem to be solved by the invention]

[0006] However, a clamp such as that shown in FIG. 1 of Patent Document 1 requires the attachment of a handle for rotation operation, and the laborious task of rotating the handle to fasten and fix the clamp to the flange of the H-shaped steel member.

[0007] Furthermore, as can be seen from Figure 1 above, the clamp body is formed in a substantially rectangular shape in the tightening direction and clamps the flange in the thickness direction. Therefore, when attaching to the flange of the H-shaped steel material as shown in Figure 5 of the document, a condition for clamp attachment is that there are no other members around the flange and web that would interfere with the attachment of the clamp body.

[0008] In view of the above problems, an object of the present invention is to provide a life rope clamp that can be easily installed without being restricted by installation conditions. [Means for solving the problem]

[0009] The invention related to (1) is a life rope clamp that can be attached to fixed steel material, comprising a first fitting plate that fits onto one side of the steel material, a second fitting plate that fits onto the other side of the steel material, and a life rope engaging hook provided on at least one of the first fitting plate and the second fitting plate, wherein the first fitting plate has an engaging portion that protrudes onto the first fitting plate, and the second fitting plate has a rotating lever that is axially supported on the second fitting plate so as to be able to rotate freely, and an engaging member that is axially supported on the rotating lever and engages with the engaging portion of the first fitting plate, wherein the engaging member attracts the engaging portion when the rotating lever is rotated, and the first fitting plate and the second fitting plate clamp the steel material.

[0010] The invention related to (2) is a clamp for a life rope described in (1) above, in which the engaging member has a locking piece that engages with the locking portion and a locking spring that biases the locking piece, and the locking piece is biased by rotating the rotating lever.

[0011] The invention related to (3) is a life rope clamp as described in (1) or (2) above, in which a connecting portion is provided on at least one of the first mating plate and the second mating plate, and the first mating plate and the second mating plate are connected to each other.

[0012] The invention related to (4) is a clamp for a main rope described in (3) above, in which the connecting portion is formed in a ring shape and is provided on the first fitting plate, the locking piece has a ring portion that engages with the locking portion, and the connecting portion passes through the ring portion.

[0013] The inventions related to (5) to (7) are the life rope clamps described in (1) to (4) above, in which the steel material is an H-shaped steel beam erected in the vertical direction, and the first engaging plate and the second engaging plate engage the flanges of the H-shaped steel beam.

[0014] The invention related to (8) is the life rope clamp described in (5) above, in which the first engaging piece of the first engaging plate and the second engaging piece of the second engaging plate can be inserted between a soundproof panel installed between the H-shaped steel and a flange of the H-shaped steel to engage the flange. Effect of the Invention

[0015] According to the present invention, for example as shown in Fig. 6(a) etc., it is possible to easily attach and detach the life rope clamp to and from the steel material by simply reciprocating the rotating lever in one direction. Furthermore, the life rope clamp can be attached without any restrictions even if there are obstacles such as soundproof panels around the steel material. [Brief description of the drawings]

[0016] [Figure 1] In one embodiment of the present invention, a side view of a life rope clamp being fixed to a flange of an H-shaped steel beam is shown. [Diagram 2] In one embodiment of the present invention, a top view of a lifeline clamp is shown. [Diagram 3] FIG. 2 is a side view illustrating the manner in which a life rope clamp is attached in one embodiment of the present invention. [Figure 4] FIG. 2 is a side view illustrating the manner in which a life rope clamp is attached in one embodiment of the present invention. [Diagram 5]FIG. 2 is a side view illustrating the manner in which a life rope clamp is attached in one embodiment of the present invention. [Figure 6] In one embodiment of the present invention, (a) is a photograph showing how a life rope clamp is attached to an H-shaped steel pillar of a soundproof wall, and (b) is a photograph showing how a life rope is installed on the life rope clamp. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention is not limited to the following embodiment.

[0018] FIG. 1 shows a side view of a life rope clamp 100 fixed to a flange of an H-beam in one embodiment of the present invention. As shown in the figure, the life rope clamp 100 of this embodiment has a first fitting plate 10 that fits onto one side of a steel material (H-shaped steel shown in the figure), a second fitting plate 20 that fits onto the other side of the steel material, and a life rope engaging hook 14 provided on at least one of the first fitting plate 10 and the second fitting plate 20, wherein the first fitting plate 10 has an engaging portion 13 that protrudes onto the first fitting plate 10, and the second fitting plate 20 has a rotating lever 22 that is axially supported on the second fitting plate 20 so as to be able to rotate freely, and an engaging member 23 that is axially supported on the rotating lever 22 and engages with the engaging portion 13 of the first fitting plate 10, and the engaging member 23 attracts the engaging portion 13 when the rotating lever 22 is rotated, so that the first fitting plate 10 and the second fitting plate 20 clamp the steel material.

[0019] To explain in more detail, in the illustrated example, the life rope locking hook 14 for hanging the life rope is provided on the first mating plate 10, but it is also possible to provide it on the second mating plate 20.

[0020] The engaging member 23 includes a locking piece 231 that engages with the locking portion 13 of the first fitting plate 10 and a locking spring 232 that biases the locking piece 231, and is configured so that the locking piece 231 is biased by the rotational operation of the rotating lever 22. In addition, as can be seen from the top view of Fig. 2, the locking piece 231 is formed with an annular portion 2311 that engages with the locking portion 13 of the first fitting plate 10.

[0021] Furthermore, as shown in Figures 1 and 2, the rotating lever 22 is connected to a rotating lever support portion 24 provided on the second fitting plate 20 via a first rotating shaft 221, and the rotating lever 22 and the engaging member 23 are further connected via a second rotating shaft 222.

[0022] The first fitting plate 10 is provided with a connecting portion 12 formed in an annular shape for connecting the first fitting plate 10 and the second fitting plate 20. As shown in the top view of Fig. 2, the connecting portion 12 penetrates an annular portion 2311 formed on the locking piece 231. This allows the first fitting plate 10 and the second fitting plate 20 to be paired, preventing one of the fitting plates from being lost. Also, the first fitting plate 10 and the second fitting plate 20 are always paired during transportation, storage, and installation, which is very convenient.

[0023] The method of connecting the first fitting plate 10 and the second fitting plate 20 is not necessarily limited to the above-mentioned method. For example, it is also possible to provide the connecting portion 12 on at least one of the first fitting plate 10 and the second fitting plate 20 and connect them to form a pair by a chain, a wire, or the like.

[0024] As shown in the side view of Figure 1, the first mating plate 10 and the second mating plate 20 are respectively provided with a first mating piece 11 and a second mating piece 21 formed in a U-shape, and in this embodiment are configured to fit into and clamp the flange side end of the H-shaped steel.

[0025] Furthermore, by providing each mechanism including the pivot lever 22 and the life rope engaging hook 14 for hanging the life rope on the opposite side of the first mating piece 11 and the second mating piece 21, it is possible to easily fix the life rope clamp 100 to the flange even if, for example, there is some kind of obstacle around the flange or web.

[0026] As a specific example, as shown in Figure 6(a), even in the case where a soundproof panel is installed between H-shaped steel pillars erected vertically, the first mating piece 11 and the second mating piece 21 can be inserted into the gap between the flange of the H-shaped steel pillar and the soundproof panel, making it possible to easily fix the life rope clamp 100 to the flange.

[0027] Therefore, a worker wearing a safety belt can hook the safety belt onto the lifeline installed as shown in Figure 6(b), enabling him or her to work at height safely.

[0028] Next, the operation of the life rope clamp 100 of this embodiment will be described.

[0029] 3, first, the flange is fitted to the second fitting piece 21 of the second fitting plate 20. At this time, the rotating lever 22 is raised upward in the figure, and the first fitting plate 10 is in a free state.

[0030] 4, the first fitting plate 10 is aligned along the flange surface, and the flange is fitted with the first fitting piece 11 of the first fitting plate 10. In conjunction with this, the rotating lever 22 is operated to engage the locking portion 13 provided on the first fitting plate 10 with the annular portion 2311 formed on the locking piece 231 of the engagement member 23.

[0031] Next, as shown in Fig. 5, the rotating lever 22 is rotated downward in the drawing. As a result, the biasing force of the locking spring 232 acts on the locking piece 231, and the locking portion 13 of the first fitting plate 10 is strongly attracted, so that the life rope clamp 100 is fastened to the flange of the H-shaped steel.

[0032] (Other embodiments) Although an embodiment of the present invention has been described above with reference to the drawings, the present invention is not necessarily limited to the above-described embodiment.

[0033] For example, in the above embodiment, an example was shown in which the life rope clamp 100 was attached to the flange of an H-shaped steel, but this is not necessarily limited to this. In other words, by changing the shape of the first fitting piece 11 of the first fitting plate 10 and the second fitting piece 21 of the second fitting plate 20 according to the steel material to be attached, it is possible to attach the life rope clamp of the present invention to various steel materials.

[0034] In addition, a locking mechanism (not shown) may be provided on the rotating lever 22, which makes it possible to prevent the rotating lever 22 from rotating inadvertently and causing the life rope clamp 100 to fall off the steel material.

[0035] Although one embodiment of the present invention and other embodiments have been described above, the above-mentioned embodiments of the invention are intended to facilitate understanding of the present invention and do not limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention includes equivalents thereof. Furthermore, the components described in the claims and specification may be combined or omitted within the scope of solving at least part of the above-mentioned problems or achieving at least part of the effects. [Explanation of symbols]

[0036] 10 First mating plate 11 First mating piece 12 Connecting part 13 Locking part 14 Lifeline retaining hook 20 Second mating plate 21 2nd mating piece 22 Rotating lever 221 First rotating shaft 222 Second rotating shaft 23 Engagement member 231 Locking piece 2311 Circular section 232 Locking spring 24 Rotating lever support 100 Lifeline clamp

Claims

1. In a life rope clamp that can be attached to a fixed steel material, A first fitting plate that fits onto one side of the steel material; A second fitting plate that fits onto the other side of the steel material; a master rope engaging hook provided on at least one of the first fitting plate and the second fitting plate, the first fitting plate includes a locking portion protruding from the first fitting plate, the second fitting plate includes a rotating lever pivotally supported on the second fitting plate so as to be rotatable, and an engaging member pivotally supported on the rotating lever and engaging with the locking portion of the first fitting plate, When the rotating lever is rotated, the engaging member attracts the locking portion, and the first fitting plate and the second fitting plate sandwich the steel material. A life rope clamp characterized by the above.

2. The engaging member includes a locking piece that engages with the locking portion and a locking spring that biases the locking piece, The locking piece is biased by the rotation of the rotating lever. A life rope clamp as claimed in claim 1.

3. At least one of the first fitting plate and the second fitting plate is provided with a connecting portion, and the first fitting plate and the second fitting plate are connected to each other. A life rope clamp as claimed in claim 1 or 2.

4. The connecting portion is formed in an annular shape and is provided on the first fitting plate, The locking piece has an annular portion that engages with the locking portion, and the connecting portion passes through the annular portion. A life rope clamp as claimed in claim 3.

5. The steel material is an H-shaped steel that stands vertically, and the first fitting plate and the second fitting plate are fitted with a flange of the H-shaped steel. A life rope clamp as claimed in claim 1 or 2.

6. The steel material is an H-shaped steel that stands vertically, and the first fitting plate and the second fitting plate are fitted with a flange of the H-shaped steel. A life rope clamp as claimed in claim 3.

7. The steel material is an H-shaped steel that stands vertically, and the first fitting plate and the second fitting plate are fitted with a flange of the H-shaped steel. A life rope clamp as claimed in claim 4.

8. The first fitting piece of the first fitting plate and the second fitting piece of the second fitting plate can be inserted between a soundproof panel installed between the H-shaped steel and a flange of the H-shaped steel to fit the flange. A life rope clamp as claimed in claim 5.

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