JP2021085240A - Parent rope support - Google Patents

Abstract

To provide a main rope support which can reduce a burden of installation work and removal work.SOLUTION: A main rope support 1 comprises: a grip box 2 fixed to a flange F by sandwiching the steel flange F; a support main body 3 which is detachably inserted into the grip box 2 from the lower end and supports a main rope R at the upper end; a lock member 4 which locks the grip box 2 and the support main body 3 by skewering the grip box 2 and the support main body 3 to prevent the support main body 3 from falling off from the grip box 2, and allows the support main body 3 to be removed from the grip box 2 by releasing the lock.SELECTED DRAWING: Figure 1

Description

The present invention relates to a main rope strut.

High-altitude workers are obliged to wear a safety belt (fall prevention device) in order to prevent an accident at the time of a fall (see, for example, Patent Document 1). Regulations on this safety belt are scheduled to be tightened in January 2022. The torso belt type safety belt that is currently in widespread use is a belt that wraps around the waist, and there is a risk that the body will become doglegged in the event of a crash and the abdomen will be compressed, and the body will slip through the belt. There is a risk of falling to the ground. For this reason, the use of a torso belt type safety belt is greatly restricted, and in principle, the use of a full harness type safety belt is obligatory. The full harness type safety belt supports multiple parts of the body such as shoulders, hips, and thighs with belts, and since the body is supported at multiple parts in the event of a crash, there is a risk that the abdomen etc. will be compressed. It is reduced and there is no risk of the body slipping off the belt and falling to the ground.

Japanese Patent No. 4093560

The full harness type safety belt has a connecting belt on the upper part of the back that connects to the main rope, so when using the full harness type safety belt, when using the torso belt type safety belt, and when using the torso belt type safety belt. In comparison, it is necessary to install the main rope higher. Therefore, the length of the main rope strut that supports the main rope becomes long. As a result, the weight of the main rope support becomes heavy, so that the burden of installation work and removal work of the main rope support becomes heavy.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a main rope support that can reduce the burden of installation work and removal work.

(1) The present invention includes a grip box fixed to the flange by sandwiching a steel flange, a support column body that is detachably inserted into the grip box from the lower end and supports a main rope at the upper end, and the above. By making the grip box and the support column body skewered, the grip box and the support column body are locked to prevent the support column body from falling off from the grip box, and by releasing the lock, the grip box is released. It is a master rope strut characterized by including a lock member that enables the removal of the strut body from the above.

According to the present invention, after fixing the grip box to the flange of the steel frame, the installation work can be performed only by inserting the support column main body, which is long and heavy and difficult to handle, into the grip box. Therefore, the installation work is easier than the conventional product in which the grip box and the support column body are integrated with each other.

Further, according to the present invention, the removal work can be performed only by removing the grip box from the flange of the steel frame after pulling out the support column main body, which is long and heavy and difficult to handle, from the grip box. Therefore, the removal work is easier than the conventional product in which the grip box and the support column body are integrated with each other.

(2) The main rope support according to (1) above, characterized in that the present invention also includes a connecting tool for connecting the lock member to the grip box.

According to the present invention, since the lock member is connected to the grip box with a binder, it is not necessary to search for the lock member when locking, and it is possible to prevent the lock member from being lost after the lock is released. .. Therefore, it is possible to prevent work at a high place from being performed without locking.

(3) In the present invention, the column main bodies are different in diameter and length from each other, and the smaller the diameter, the shorter the length, and one is loosely inserted inside the other so that the positions of the lower ends of the columns are aligned with each other. The present invention is characterized in that it has a plurality of square tubes and a plurality of washers into which the lock member is inserted when the lock member is inserted while maintaining a gap between the plurality of square tubes. It is the main rope support described in 1) or (2).

According to the present invention, since the strut body disperses stress like a laminated leaf spring, the strength of the strut body can be improved.

(4) The present invention is also characterized in that the support column main body includes bolts and nuts for fixing the plurality of square pipes to each other by skewering the plurality of square pipes (3). It is a main rope support described in.

According to the present invention, the column main body can be integrated with a simple structure in which a plurality of square tubes are skewered.

(5) The parent according to (4) above, wherein the bolt is arranged in parallel with the lock member that fixes the grip box and the support column body in a skewered manner. It is a rope support.

According to the present invention, by confirming the directions of the bolts and nuts with respect to the support column body during the installation work, the direction in which the support column body is inserted into the grip box can be easily grasped.

According to the main rope support described in the above (1) to (5) of the present invention, the burden of installation work and removal work can be reduced.

It is a side view of the main rope support which concerns on embodiment of this invention. It is an exploded side view of the main rope support shown in FIG. It is a front view of the support main body provided by the main rope support shown in FIG. (A) is a cut end view of the support column body viewed in the direction of arrow IVA-IVA of FIG. 3, and (B) is a cut end view of the support column body viewed in the direction of arrow IVB-IVB of FIG. ) Is a cut end view of the support column body as viewed in the direction of arrows IVC-IVC in FIG. It is a usage state diagram of the main rope support shown in FIG. It is a side view explaining the installation procedure of the main rope support shown in FIG. 1, (A) shows the state before the start of installation, (B) shows the state which fixed the grip box to the flange of H-shaped steel, and ( C) indicates a state in which the support column body is inserted into the grip box, and (D) indicates a state in which the support column body is locked in the grip box with a lock member. It is a side view explaining the removal procedure of the main rope support shown in FIG. 1, (A) shows the state before the start of removal, (B) shows the state which unlocked by removing the lock member, (C). Indicates a state in which the support column body is removed from the grip box, and (D) indicates a state in which the grip box is removed from the flange of the H-shaped steel.

Hereinafter, the master rope support 1 according to the embodiment of the present invention will be described in detail with reference to the drawings.

First, the structure of the main rope support 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a side view of the main rope support 1 according to the embodiment of the present invention. FIG. 2 is an exploded side view of the main rope support 1 shown in FIG. FIG. 3 is a front view of the support column main body 3 provided in the main rope support column 1 shown in FIG. FIG. 4A is a cut end view of the support column main body 3 as viewed in the direction of arrows IVA-IVA of FIG. FIG. 4B is a cut end view of the support column main body 3 as viewed in the direction of the arrow IVB-IVB of FIG. FIG. 4C is a cut end view of the support column main body 3 as viewed in the direction of the arrow IVC-IVC of FIG. FIG. 5 is a usage state diagram of the main rope support 1 shown in FIG.

The main rope support 1 shown in FIGS. 1 to 5 is installed on a flange F of a steel frame such as H-shaped steel horizontally provided at a high place, and a high-altitude worker W is placed between the main rope support 1s. The main rope R connected to the safety belt B to be worn is hung. Specifically, the main rope support 1 includes a grip box 2, a support main body 3, a lock member 4, a connecting tool 5, and the like.

The grip box 2 is fixed to the flange F by sandwiching the flange F of the steel frame, and the support column body 3 is detachably inserted to support the support column body 3. The grip box 2 is formed in a substantially U shape in a side view by welding metal parts or the like. Specifically, the grip box 2 includes a flange holding portion 20, a strut insertion portion 21, a strut lock portion 22, a lock member connecting portion 23, and the like.

The flange sandwiching portion 20 sandwiches the steel frame flange F. Specifically, the flange sandwiching portion 20 has an upper jaw 200, a lower jaw 201, and two left and right bolts 202. The upper jaw 200 and the lower jaw 201 are configured to have a substantially U-shape in a lateral view, and a flange F inserted between the upper jaw 200 and the lower jaw 201 is sandwiched vertically. The two left and right bolts 202 are screwed into the upper jaw 200 so as to penetrate from above, and tighten the flange F sandwiched between the upper jaw 200 and the lower jaw 201 at the top and bottom.

The strut insertion portion 21 supports the strut body 3 that is detachably inserted into the strut insertion portion 21. The strut insertion portion 21 is a hole having an inner diameter slightly larger than the outer diameter of the strut body 3 and opening upward.

The strut lock portion 22 is a hole for skewering the grip box 2 and the strut body 3 with the lock member 4, and penetrates both side surfaces of the grip box 2.

One end of the connecting tool 5 is attached to the locking member connecting portion 23.

The strut body 3 is detachably inserted into the strut insertion portion 21 of the grip box 2 from the lower end and supports the main rope R at the upper end. The support column main body 3 is integrally formed by welding metal parts or the like. Specifically, the support column main body 3 includes a plurality of square steel pipes (square pipes) 30, 31, 32, a plurality of washers 33, a bolt 34a, a nut 34b, a main rope support portion 35, a positioning protrusion 36, and the like. It has a handle 37, etc.

The plurality of square steel pipes 30, 31, and 32 have different diameters and lengths, and the smaller the diameter, the shorter the length. One of the plurality of square steel pipes 30, 31, and 32 is loosely inserted inside the other so that the positions of the lower ends coincide with each other. Specifically, the square steel pipe 30 has a relatively large diameter and a relatively long length. The square steel pipe 31 has a smaller diameter than the square steel pipe 30 and a shorter length than the square steel pipe 30. The square steel pipe 31 is loosely inserted inside the square steel pipe 30 so that the positions of the lower ends of the square steel pipe 31 coincide with each other. The square steel pipe 32 has a smaller diameter than the square steel pipe 31 and a shorter length than the square steel pipe 31.

The plurality of square steel pipes 30, 31 and 32 have lock holes 30a, 31a and 32a at positions corresponding to the support column lock portions 22 of the grip box 2 when they are inserted into the support column insertion portions 21 of the grip box 2. There is. The lock hole 30a penetrates both side surfaces of the square steel pipe 30 toward the lower side. The lock hole 31a penetrates both side surfaces of the square steel pipe 31 toward the lower side. The lock hole 32a penetrates both side surfaces of the square steel pipe 32 toward the lower side. When locking, the lock member 4 is inserted into the lock holes 30a, 31a, 32a together with the plurality of washers 33 and the support column lock portions 22 of the grip box 2 in a skewered manner.

The plurality of square steel pipes 30 and 31 have bolt holes (not shown) corresponding to each other at positions corresponding to the positions of the square steel pipes 32 having a relatively short length toward the upper side. Further, the square steel pipe 32 has a bolt hole (not shown) at a position closer to the upper side and at a position corresponding to a bolt hole (not shown) of the square steel pipes 30 and 31. Bolt holes (not shown) of the square steel pipe 30 penetrate both side surfaces of the square steel pipe 30. Bolt holes (not shown) of the square steel pipe 31 penetrate both side surfaces of the square steel pipe 31. Bolt holes (not shown) of the square steel pipe 32 penetrate both side surfaces of the square steel pipe 32. Bolts 34a are inserted into the bolt holes (not shown) of the plurality of square steel pipes 30, 31, and 32 in a skewered manner.

The plurality of washers 33 are arranged between the plurality of square steel pipes 30, 31, 32 so as to correspond to the lock holes 30a, 31a, 32a, and keep a gap between the plurality of square steel pipes 30, 31, 32. .. A pair of washers 33 arranged between the square steel pipes 30 and 31 are fixed to the outer surface of the square steel pipe 31 by welding or the like so as to correspond to the lock hole 31a. A pair of washers 33 arranged between the square steel pipes 31 and 32 are fixed to the outer surface of the square steel pipe 32 by welding or the like so as to correspond to the lock hole 32a. When locking the plurality of washers 33, the lock member 4 is inserted in a skewered manner together with the lock holes 30a, 31a, 32a and the support column lock portion 22 of the grip box 2.

The bolts 34a and nuts 34b are inserted into bolt holes (not shown) to skewer a plurality of square steel pipes 30, 31, 32, thereby fixing the plurality of square steel pipes 30, 31, 32 to each other. The bolt 34a is arranged in parallel with the lock member 4 that fixes the grip box 2 and the support column body 3 in a skewered manner.

The main rope support portion 35 is fixed to the upper portion of the square steel pipe 30 by welding or the like. A hook (reference numeral omitted) or a tensioner (reference numeral omitted) connected to the master rope R is attached to the master rope support portion 35, and the master rope R is bridged between the master rope columns 1.

The positioning protrusion 36 positions the strut body 3 with respect to the strut insertion portion 21 of the grip box 2 when the strut body 3 is detachably inserted into the strut insertion portion 21 of the grip box 2. The positioning protrusion 36 is fixed to the outer surface of the square steel pipe 30 by welding or the like, and when the strut body 3 is detachably inserted into the strut insertion portion 21 of the grip box 2, it hits the edge of the strut insertion portion 21. Positioning is performed by contacting.

The handle 37 is a portion for holding the support column body 3 in the hand. The handle 37 is fixed to the outer surface of the square steel pipe 30 by welding or the like.

The lock member 4 locks the grip box 2 and the support body 3 by skewering the grip box 2 and the support body 3, prevents the support body 3 from falling off from the grip box 2, and releases the lock. This makes it possible to remove the support column body 3 from the grip box 2.

Specifically, the lock member 4 includes an L pin 40, an I pin 41, and the like. The L pin 40 is an L-shaped pin. A binder 5 is attached to one end of the L pin 40, and an I pin 41 is attached to the other end of the L pin 40 so as to be rotatable with each other. The I pin 41 is an I-shaped pin. An L pin 40 is attached to one end of the I pin 41 so as to be rotatable about each other. The lock member 4 can lock and unlock the grip box 2 and the support column main body 3 in a state where the L pin 40 and the I pin 41 are linear. Further, the lock member 4 is a grip box that is skewered by locking the grip box 2 and the support column body 3 and then rotating the I pin 41 with respect to the L pin 40 by the weight of the I pin 41. 2 and the support column body 3 are prevented from falling off.

The connecting tool 5 connects the lock member 4 to the grip box 2. One end of the connecting tool 5 is attached to the lock member connecting portion 23 of the grip box 2, and the locking member 4 is attached to the other end of the connecting tool 5.

Next, the procedure for installing the main rope support 1 will be described with reference to FIG. FIG. 6 is a side view for explaining the installation procedure of the main rope support 1 shown in FIG. FIG. 6A shows a state before the start of installation. FIG. 6B shows a state in which the grip box 2 is fixed to the flange F of the H-shaped steel. FIG. 6C shows a state in which the support column main body 3 is inserted into the grip box 2. FIG. 6D shows a state in which the support column main body 3 is locked to the grip box 2 by the lock member 4.

First, the grip box 2 is fixed to the flange F of the H-shaped steel (see FIG. 6 (A) → FIG. 6 (B)). Next, the support column main body 3 is inserted into the grip box 2 fixed to the flange F of the H-shaped steel (see FIG. 6 (B) → FIG. 6 (C)). Then, the support column main body 3 is locked to the grip box 2 by the lock member 4 (see FIG. 6 (C) → FIG. 6 (D)). As a result, the installation of the main rope support 1 is completed.

Next, the procedure for removing the main rope support 1 will be described with reference to FIG. 7. FIG. 7 is a side view illustrating the procedure for removing the main rope support 1 shown in FIG. FIG. 7A shows a state before the start of removal. FIG. 7B shows a state in which the lock member 4 is removed and the lock is released. FIG. 7C shows a state in which the support column main body 3 is removed from the grip box 2. FIG. 7D shows a state in which the grip box 2 is removed from the flange F of the H-shaped steel.

First, the lock member 4 is released to release the lock (see FIG. 7A → FIG. 7B). Next, the support column body 3 is pulled out from the grip box 2 and the support column body 3 is removed (see FIG. 7B → FIG. 7C). Then, the grip box 2 is removed from the flange F of the H-shaped steel, and the grip box 2 is removed (see FIG. 7 (C) → FIG. 7 (D)). As a result, the removal of the main rope support 1 is completed.

As described above, according to the main rope support 1, after fixing the grip box 2 to the flange F of the steel frame, the installation work is performed simply by inserting the support main body 3 which is long and heavy and difficult to handle into the grip box 2. It can be performed. Therefore, the installation work is easier than the conventional product in which the grip box and the support column body are integrated with each other.

Further, according to the main rope support 1, after removing the support main body 3 which is long and heavy and difficult to handle from the grip box 2, the removal work is performed only by removing the grip box 2 from the flange F of the steel frame. Can be done. Therefore, the removal work is easier than that of the conventional product in which the grip box 2 and the support column main body 3 are integrated with each other.

That is, according to the main rope support 1, the burden of installation work and removal work can be reduced.

Further, according to the main rope support 1, since the lock member 4 is connected to the grip box 2 by the binder 5, it is not necessary to search for the lock member 4 when locking, and the lock member 4 is locked after the lock is released. It is possible to prevent the member 4 from being lost. Therefore, it is possible to prevent work at a high place from being performed without locking.

Further, according to the main rope support 1, the support main body 3 disperses the stress like a laminated leaf spring, so that the strength of the support main body 2 can be improved.

Further, according to the main rope support 1, the support main body 2 can be integrated with a simple structure in which a plurality of square steel pipes 30, 31, and 32 are skewered.

Further, according to the main rope support 1, the direction in which the support body 3 is inserted into the grip box 2 can be easily grasped by checking the directions of the bolts 34a and the nuts 34b with respect to the support body 3 during the installation work. ..

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea. That is, the position, size, length, quantity, shape, material, etc. of each configuration can be changed as appropriate.

For example, in the above embodiment, the case where the support column main body 3 is composed of three square steel pipes 30, 31, and 32 has been described as an example, but the present invention is not limited to this, and the support column main body is not limited to this. As long as it is composed of two or more square steel pipes, it may be composed of any number of square steel pipes.

1 Main rope support 2 Grip box 20 Flange holding part 200 Maxilla 201 Lower jaw 202 Bolt 21 Support insertion part 22 Support support lock part 23 Lock member connecting part 3 Support body 30, 31, 32 Square steel pipe (square pipe)
30a, 31a, 32a Lock hole 33 Washer 34a Bolt 34b Nut 35 Main rope support 36 Positioning protrusion 37 Handle 4 Lock member 40 L pin 41 I pin 5 Connector F Flange W High-altitude worker B Safety belt R Main rope

Claims (5)

A grip box that is fixed to the flange by sandwiching the steel flange,
A strut body that is detachably inserted into the grip box from the lower end and supports the main rope at the upper end,
By making the grip box and the support column body skewered, the grip box and the support column body are locked to prevent the support column body from falling off from the grip box, and by releasing the lock, the grip is released. A master rope strut characterized by comprising a lock member that enables the removal of the strut body from the box. The master rope strut according to claim 1, further comprising a connecting tool for connecting the locking member to the grip box. The support body is
Multiple square tubes that are different in diameter and length from each other, the smaller the diameter, the shorter the length, and one is loosely inserted inside the other so that the positions of the lower ends match each other.
The parent according to claim 1 or 2, wherein the plurality of square tubes are kept between each other and have a plurality of washers into which the lock member is inserted when the lock member is locked. Tether support. The master rope strut according to claim 3, wherein the strut body includes bolts and nuts for fixing the plurality of square pipes to each other by skewering the plurality of square pipes. The main rope support according to claim 4, wherein the bolt is arranged in parallel with the lock member that fixes the grip box and the support body in a skewered manner.

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