JP6904748B2 - Fall prevention equipment - Google Patents

Description

The present invention relates to a fall prevention device that prevents an operator from falling from the loading platform of a transport vehicle.

In Patent Document 1, a socket member attached to a predetermined position on the side surface of the front torii portion of the truck bed, a pillar member insertable into the socket member, and a rear side surface position of the truck bed are attached, respectively. It is composed of a U-shaped socket member and a pillar member having a plate that can be inserted into the socket member, and a main rope is attached to the round steel member and a hook member attached to the upper part of the pillar member via a removable hook. A fall prevention device to be stretched is disclosed.

Further, in Patent Document 2, a cylindrical fitting portion is fitted into a long main body portion connected by a hinge portion and a hole formed in a cargo bed of a freight vehicle, and the fitting portion can be slid. It also has a base portion that is rotatably accommodated and a net that stretches between the plurality of main body portions, and at least the hinge portion and one end portion of the main body portion on the hinge portion side are accommodated in the base portion. The main body is erected with respect to the loading platform, and the fitting portion is slid within the base to expose the hinge portion and one end of the main body portion on the hinge portion side to expose the loading platform. A fall prevention device that allows the main body to be bent is disclosed.

Utility model registration No. 3192801 Japanese Unexamined Patent Publication No. 2012-71769

However, in Patent Document 1, since it is necessary to provide a U-shaped socket member on the side surface of the loading platform, the cost is increased accordingly. Further, it is necessary to attach the plate to the main pillar member, and it is not easy to use a general cylindrical member or the like as it is, which is costly. Further, also in Patent Document 2 above, since the fall prevention device can be tilted freely by the hinge structure, a problem of high cost is introduced.

In view of the above circumstances, the present invention provides a fall prevention device capable of reducing costs by effectively utilizing an existing material on a loading platform of a transport vehicle.

In order to solve the above-mentioned problems, the fall prevention tool of the present invention has an engaging portion that engages with a tilting column support portion for supporting a tilting column of a loading platform of a transport vehicle, and a master rope strut to which a master rope is connected. It is characterized in that it is provided with a main rope strut support portion for supporting the above-mentioned tilt strut so that it can be mounted by replacing it with the above-mentioned tilt strut.

With the above configuration, the existing tilting column support portion for supporting the tilting column of the loading platform of the transport vehicle can be used for setting, so that the cost of the fall prevention tool can be reduced. Further, since the main rope support portion is not affected by the shape of the tilting support support portion, it becomes easy to use a main rope support portion having a general shape, and the cost of the entire fall prevention device can be reduced. ..

The engaging portion may include a horizontal plate portion that supports the main rope support portion in a hanging shape, and an engaging piece portion that is provided in a hanging shape from the edge of the horizontal plate portion. According to this, the fall prevention tool can be easily attached by hooking the hanging-shaped engaging piece portion on the existing tilting column support portion from above.

The main rope support portion may be made of a tubular member. According to this, the main rope support can be easily attached by inserting it into the main rope support portion from above.

According to the present invention, since the tilting column support portion, which is an existing product of the loading platform of the transport vehicle, can be effectively used, the cost of the fall prevention tool can be reduced.

It is a schematic perspective view which showed the transport vehicle provided with the main rope support and the safety device by the main rope set by using the fall prevention device of embodiment. It is explanatory drawing which showed the fall prevention tool of embodiment. It is a figure which shows the embodiment, and is the schematic perspective view which showed the state which showed the state which the fall prevention tool was set in the tilting column support part provided at the back of a loading platform. It is a figure which shows the embodiment, and is the schematic perspective view which showed the state of setting the master rope support on the fall prevention tool provided behind the loading platform. It is a figure which shows the embodiment, and is the schematic perspective view which showed the state which laid the main rope on the main rope support provided in the front and back of a loading platform, and set the safety block and the like.

Hereinafter, embodiments according to one aspect of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the fall prevention device 1 of this embodiment can be used in a transport vehicle 500 such as a truck. A torii 502 is provided on the front side (driver's seat side) of the loading platform 501 of the transport vehicle 500. The torii 502 is provided with torii pillars 503 on the left and right sides, respectively.

Further, side flaps 504 are swingably provided on both sides of the loading platform 501 of the transport vehicle 500, and rear tilting 505 is swingably provided behind the loading platform 501. Further, on both side surfaces behind the loading platform 501, a tilting column support portion 506 for supporting the tilting column (not shown) for supporting the tilting columns 504 and 505 is provided. The tilting column support portion 506 is formed by welding, for example, a steel material having a substantially U-shaped cross section to a metal portion on the side surface, and a substantially flat square opening having the substantially U-shaped cross section is directed upward. ing.

A front main rope support 600 is fixed to each torii pillar 503 of the torii 502 by a clamp 602. The method of fixing the main rope support 600 on the front side to each torii pillar 503 is not particularly limited. Further, as the main rope support 600, for example, a single pipe can be used.

The fall prevention tool 1 includes an engaging portion 2 that can be engaged with the tilting column support portion 506, and a master rope strut support portion 3 that supports the master rope strut 600 to which the master rope 601 is connected. It can be attached to the tilting column support portion 506 by replacing it with. The main rope support portion 3 is made of, for example, a bottomed cylindrical member.

The engaging portion 2 includes a horizontal plate portion 21 that supports the master rope support portion 3 in a hanging shape, and an engaging piece portion 22 that is provided in a hanging shape from the edge of the horizontal plate portion 21. .. The horizontal plate portion 21 is formed with a circular opening leading to the hollow portion of the main rope support portion 3. The cross-sectional shape of the engaging piece portion 22 has a substantially flat quadrangular shape corresponding to the substantially flat quadrangular shape due to the substantially U-shape in the tilting column support portion 506. Further, the height of the engaging piece portion 22 can be determined from the viewpoint of ease of attachment / detachment operation to / from the tilting column support portion 506 and formation of a reliable engagement state with the tilting column support portion 506. For example, it is set to about 300 mm.

Further, for example, the engaging portion 2 and the main rope support portion 3 are each made of a steel material and are fixed to each other by welding. The main rope support portion 3 is not limited to a cylindrical shape, and may have a square tubular shape. In this case, the opening may be a square shape that matches the hollow shape of the square cylinder shape. Further, the main rope strut support portion 3 may be bottomless, and in the case of making the main rope strut support portion 3 bottomless in this way, a collar-shaped stopper portion may be formed on the peripheral portion of the main rope strut 600. Further, in the case of having a bottom, a gap may be provided so that drainage can be performed without blocking the entire bottom.

As shown in FIGS. 3 and 4, when performing the loading / unloading work, the operator attaches the main rope support 600 to the fall prevention tool 1 behind the loading platform 501. In this mounting, the lower end portion of the master rope strut 600 may be inserted into the master rope strut support portion 3 through the opening of the engaging portion 2 of the fall prevention tool 1. Further, in front of the loading platform 501, as shown in FIG. 5, the operator fixes the front main rope column 600 to each torii column portion 503 of the torii 502 by a clamp 602.

Then, the main rope 601 is bridged to the hook on the top side of the main rope support 600 on the front side and the main rope support 600 on the rear side, and a constant tension is applied to the main rope 601. For example, the end side of the main rope through the hook on the top side of the main rope support 600 on the rear side is pulled through a tension machine connected to the hook on the lower side of the main rope support 600 on the rear side. .. Further, a safety block 603 is set in the main rope 601. Then, the tip hook of the safety block 604 is locked to the harness worn by the operator. After such a situation is established, the unloading or loading work is started.

As described above, the fall prevention tool 1 can be set by using the existing tilt support support portion 506 for supporting the tilt support on the loading platform 501 of the transport vehicle 500. Therefore, the fall prevention tool 1 can be set. It is possible to reduce the cost. Further, since the main rope support portion 3 is not affected by the shape of the tilt support support portion 506, it becomes easy to use the main rope support portion having a general shape, and the cost of the entire fall prevention device is also increased. Can be reduced.

When the engaging portion 2 includes a horizontal plate portion 21 that supports the master rope support portion 3 in a hanging shape and an engaging piece portion 22 that is provided in a hanging shape from the edge of the horizontal plate portion 21, the above The fall prevention tool 1 can be easily attached by hooking the hanging-shaped engaging piece portion 22 on the existing tilting column support portion 506 from above.

When the master rope strut support portion 3 is made of a tubular member, the master rope strut 600 can be easily attached by inserting the master rope strut 600 into the master rope strut support portion 3 from above.

The master rope strut support portion 3 is not limited to the tubular member, and for example, the master rope strut support portion 3 is composed of a strut-shaped portion and a clamp portion provided on the strut-shaped portion, and the clamp portion. The structure may be such that the main rope support 600 is fixed to the support support. Further, when a main rope support 600 having a hollow tubular portion is used, the main rope support support portion 3 can be a rod-shaped member that fits into the hollow tubular portion. This rod-shaped member can be provided upright on the horizontal plate portion 21.

Further, when the transport vehicle 500 is large, the tilting column support portion 506 may be provided at an intermediate position in the front-rear direction of the loading platform 501. In such a case, the tilting column support portion 506 at the intermediate position is used. The fall prevention device 1 may be set, and the main rope support 600 may be erected on the fall prevention device 1. Further, if the tilting column support portion 506 is provided in front of the loading platform 501, the fall prevention tool 1 can be set by using the tilting column support portion 506 in front of the loading platform 501.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to those of the illustrated embodiments. Various modifications and modifications can be made to the illustrated embodiment within the same range as the present invention or within the same range.

1: Fall prevention tool 2: Engagement part 3: Main rope support part 21: Horizontal plate part 22: Engagement piece part 500: Transport vehicle 501: Loading platform 502: Torii 503: Torii pillar part 506: Tilt support part 600 : Master rope support 601: Master rope 602: Clamp 603: Safety block

Claims (3)

The above-mentioned tilting column is provided with an engaging portion that engages with the tilting column support portion for supporting the tilting column of the loading platform of the transport vehicle and a master rope strut support portion that supports the master rope strut to which the master rope is connected. A fall prevention device that can be replaced and installed. In the fall prevention tool according to claim 1, the engaging portion is a horizontal plate portion that supports the main rope support portion in a hanging shape on the outside of the edge of the loading platform, and the engaging portion hangs from the edge of the horizontal plate portion. A fall prevention device characterized in that it is provided in a shape and includes an engaging piece portion that is engaged with the edge of the loading platform. The fall prevention device according to claim 1 or 2, wherein the main rope support portion is made of a tubular member.

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