JP2014039740A - Fall prevention apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention apparatus which keeps a high-level tension of rope members connected to a worker via connection members, thereby preventing the worker from falling and to improve work efficiency.SOLUTION: A fall prevention apparatus 1 comprises: plural stanchions 10 erected along the outer edge of the load-carrying platform 100 of a cargo vehicle; rope members 20 each stretched to be laid between two stanchions 10 and 10; connection members 30 attached slidably to the rope members 20 and connected to the worker; and pulley sections 40. Each pulley section 40 comprises a pulley 43 to wind each rope member 20 having one end 21 and the other end 22 fixed to the cargo vehicle, and is provided at the upper end 11 of each stanchion 10.

Description

  The present invention relates to a fall prevention device provided on a loading platform of a cargo vehicle such as a truck.

2. Description of the Related Art Conventionally, a fall prevention device is sometimes installed on a cargo bed such as a trailer or a truck so that an operator does not fall (see, for example, Patent Document 1).
Specifically, the fall prevention device (safety device for cargo truck loading platform work) disclosed in Patent Document 1 specifically includes two or more long members that are detachably installed on the cargo truck loading platform, A rope member (master rope) connected to one end of the two long members and connected between the long members, and a connecting member. One end of the connecting member is slidable with respect to the master rope, and is connected to the operator on the other end side.

JP2012-81103A

However, in the fall prevention device described in Patent Document 1, the rope member connected between the long members is attached to an annular attachment portion provided at the upper end portion of the long member. The member easily kinks, and as a result, the tension may not be maintained. In the case where an operator connected to the rope member via the connecting member is likely to fall from the loading platform, the worker cannot be supported and may be dropped, and there is room for examination.
The present invention has been made in view of the above-mentioned problems, and its purpose is to maintain the tension of the rope member connected to the operator via the connecting member at a high level, and to prevent the operator from falling. An object of the present invention is to provide a fall prevention device that improves work efficiency.

In order to solve the above problem, a fall prevention device according to an embodiment of the present invention includes a plurality of stanchions erected along an outer edge of a loading platform of a freight vehicle,
A rope member stretched between the two stanches,
A slidably attached to the rope member and connected to the operator;
A pulley portion including a pulley that winds the rope member, with one end portion and the other end portion of the rope member being fixed to the freight vehicle, is provided at an upper end portion of the stanchion.

Here, the pulley unit may be detachably provided at the upper end of the stanchion. As described above, the pulley portion is detachably provided at the upper end portion of the stanchion, so that it can be applied to an existing stanchion, and the manufacturing cost can be reduced.
Further, the plurality of stanches may be erected by being fitted into a plurality of holes formed along the outer edge of the cargo bed of the freight vehicle. By being configured in this way, each stanchion can be removed from the hole, and the versatility is improved.

  According to the fall prevention device according to an embodiment of the present invention, the tension of the rope member connected to the worker via the connecting member is maintained at a high level, the worker is prevented from falling, and the working efficiency is improved. A fall prevention device can be provided.

It is a figure which shows the structure in embodiment with the fall prevention apparatus which concerns on this invention, (a) is a perspective view, (b) is a side view, (c) is a front view. It is a perspective view which shows the structure at the time of use in embodiment with the fall prevention apparatus which concerns on this invention.

Hereinafter, an embodiment of a fall prevention device according to the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a configuration of the fall prevention device according to the present embodiment, in which (a) is a perspective view, (b) is a side view, and (c) is a front view.
As shown in FIGS. 1A to 1C, the fall prevention device 1 includes a stanchion 10, a rope member 20, a connecting member 30, and a pulley unit 40.

<Stance>
The stanchions 10 are long columns that are erected along the outer edge of the loading platform 100 of the freight vehicle. These stanchions 10 may be erected by being fitted into a plurality of holes 101 formed along the outer edge of the cargo bed 100 of the freight vehicle. By being configured in this way, each stanchion 10 can be detached from the hole 101, and the versatility is improved.

<Rope member>
The rope member 20 is a belt-like body that is stretched between a pair of stanches 10 and 10 that are provided facing each other in the longitudinal direction of the cargo bed 100 of the freight vehicle. The material of the rope member 20 is preferably a material having as low elasticity as possible in the longitudinal direction. For example, the rope member 20 includes a so-called nylon belt. In addition, a load closing machine 23 is provided at the end 22 of the rope member 20. The cargo tightener 23 is provided in the vicinity of the end 22 of the rope member 20 and has a function of adjusting the length of the rope member 22. As the closing machine 23, a ratchet type closing machine is preferable.

<Connecting member>
The connecting member 30 is a member that connects the rope member 20 stretched between the pair of stanches 10 and 10 and the operator's waist belt, and is slidably attached to the rope member 20.

<Pulley unit>
The pulley unit 40 includes a main body unit 41, a pulley housing unit 42, a pulley 43, and a shaft unit 44.
The main body 41 has a boxed shape with a lid and has an opening 41a (see FIG. 1C), and the upper end of the stanchion 10 is accommodated in the opening 41a so as to accommodate the upper end 11 of the stanchion 10. 11 is fixed.
As shown in FIG. 1C, the pulley accommodating portion 42 has an L-shaped cross section and is provided on a side surface 41b of the main body portion 41 to rotatably accommodate a pulley 43 described later.

  The pulley 43 is rotatably accommodated in the pulley accommodating portion 42 with a shaft portion 44 penetrating through and fixed to the side surface 41b of the main body portion 41 and the inner surface 42a of the pulley accommodating portion 42 facing the side surface 41b. . Although not shown, it is preferable that a bearing be provided between the pulley 43 and the shaft portion 44. By setting it as such a structure, the pulley 43 can be rotated smoothly and the tension | tensile_strength of the rope member 20 wound around this pulley 43 can be kept higher.

  FIG. 2 is a perspective view showing a configuration when the fall prevention device of the present embodiment is used. As shown in FIG. 2, in the fall prevention device 1 having the above-described configuration, a rope member 20 is stretched between a pair of stanchions 10 and 10 that are provided facing each other in the longitudinal direction of a loading platform 100 of a freight vehicle. Here, as shown in FIG. 2, it is preferable that the rope member 20 is stretched between two pairs of stanches 10, 10 provided facing the longitudinal direction of the cargo bed 100 of the freight vehicle.

Hereinafter, the stretch of the rope member 20 will be described.
One end portion 21 of the rope member 20 is fixed to a hook 102 provided at a lower portion of the loading platform 100 of the cargo vehicle. The rope member 20 to which one end portion 21 is fixed is wound around a pulley (not shown) of the pulley portion 40A (40) installed at the upper end portion 11A (11) of one stanchion 10A (10). At the same time, it is wound around a pulley (not shown) of a pulley portion 40B (40) installed at an upper end portion 11B (11) of another stanchion 10B (10) facing the longitudinal direction of the loading platform 100. The other end 22 of the rope member 20 is fixed to the hook 102 provided at the lower portion of the cargo bed 100 of the freight vehicle via the loader 23. The rope member 20 in which the pulleys 40 </ b> A and 40 </ b> B are wound and the one end 21 and the other end 22 are fixed to the hook 102 is tensioned by the loader 23.

In addition, the rope members 20, 20 stretched between the two pairs of stanches 10, 10 provided opposite to each other in the longitudinal direction of the cargo bed 100 are connected to the operator. The connecting members 30 are attached to be slidable in the longitudinal direction of the loading platform 100.
As described above, the fall prevention device 1 according to the present embodiment attaches the rope member 20 in which the one end 21 and the other end 22 are fixed to the hooks 102 and 102 to the pair of stanches 10 and 10, respectively. At this time, the pulleys 43 and 43 of the pulley portions 40 and 40 provided in the stanches 10 and 10 are wound around the pulleys 43 and 43, respectively. As a result, since the tension of the rope member 20 can be maintained at a high level, it is possible to provide a fall prevention device that prevents the operator from falling and improves work efficiency.
As mentioned above, although embodiment of this invention has been described, this invention is not limited to this, A various change and improvement can be performed.

DESCRIPTION OF SYMBOLS 1 Fall prevention device 10 Stanchion 11 Upper end part 20 Rope member 21 One end part 22 The other end part 30 Connection member 40 Pulley part 43 Pulley 100 Loading platform 101 Hole part

Claims (3)

A plurality of stanchions erected along the outer edge of the cargo carrier bed;
A rope member stretched between the two stanches;
A slidably attached to the rope member and connected to the operator;
A fall part including a pulley part having a pulley that winds the rope member, wherein one end part and the other end part of the rope member are fixed to the freight car are provided at an upper end part of the stanchion. Prevention device.   The fall prevention device according to claim 1, wherein the pulley portion is detachably provided at an upper end portion of the stanchion.   The fall prevention device according to claim 1, wherein the plurality of stanches are respectively fitted and installed in a plurality of holes formed along an outer edge of a cargo bed of a freight vehicle.

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