JPH0211493Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a protective safety device for a vehicle such as a wheel loader having an articulate mechanism.

[Technical background of the invention and its problems]

A vehicle such as a wheel loader having an articulate mechanism can bend the front wheel body and the rear wheel body by strong hydraulic pressure even when the vehicle is stopped. Therefore, if a worker or the like carelessly steps between the vehicle bodies on both sides even though the vehicle is stopped, in the worst case scenario, a person may become wedged between the vehicle bodies on both sides due to the above-mentioned bending operation. It is also possible that the

Therefore, there is a need for a device that can effectively indicate the non-safety range of this artefact to people around this type of artefact vehicle.
Up until now, there has been no such protective safety device, relying only on the attentiveness of vehicle operators and the like.

[Purpose of invention]

The present invention aims to provide a protective safety device that clearly indicates the non-safety range when an articulate vehicle turns and prevents people from inadvertently entering this non-safety range.

[Summary of the idea]

The articulate vehicle protection and safety device of the present invention is provided for a vehicle having an articulate mechanism in which a front wheel side vehicle body and a rear wheel side vehicle body are connected in a bendable manner around a center pivot. One end of a flexible wire material is fixed to either the side member or the side member of the rear wheel side vehicle body to make it clear that entry is prohibited, and a pulley and a vertical guide rail are arranged vertically on the other side, and the above-mentioned The flexible wire is wound around a pulley, the other end of the flexible wire is connected to a vertically movable body fitted to the guide rail so as to be vertically movable, and the flexible wire is connected to the vertically movable body. This structure is characterized by applying a load that is pulled at a constant tension, so that even if the front wheel side car body and the rear wheel side car body bend and the gap between the side members expands or contracts, the slider will not move up or down. By moving the slider, the flexible wire can be pulled with a constant tension by the load applied to the slider, and it can be clearly stated that entry inside the flexible wire is prohibited.

[Example of idea]

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

The vehicle wheel loader 1 shown in FIG. 1 has an articulate mechanism in which a front wheel body 2 and a rear wheel body 3 are connected so as to be bendable about a center pivot 4 by a hydraulic cylinder (not shown). It is equipped as a steering device and bends as shown in FIG.

In such a wheel loader 1, as shown in FIG. 1, a flexible wire or the like is attached to the rear end and outermost part of the platform/tire cover 5 provided on the side of the front wheel side vehicle body 2 to make it clear that entry is prohibited. One end of the wire rod 6 is fixed, and a pulley 9 is rotatably supported on the upper part of the side pipe 8 of the elevating ladder 7 provided on the side surface of the rear wheel side vehicle body 3. A guide rail 10 made of aluminum is fixed vertically. After winding the flexible wire 6 around the pulley 9, the flexible wire 6 is
The other end, as shown in FIG. A disc-shaped weight 14 is fixed in the hole 13. This fixing can be done, for example, by inserting a stepped screw 15 protruding from the upper part of the back surface of the weight 14 into the small hole 13, and attaching the guide rail 1 to the back surface of the vertically movable body 11.
The weight 14 is fixed to the vertically movable body 11 by screwing together the stepped screw 15 with the nut 16 embedded so as not to contact the vertically movable body 11. In this way,
A load is applied to the vertically movable body 11 to pull the flexible wire 6 with a constant tension.

The flexible wire 6 is coated with a yellow and black mottled pattern that is easily noticeable on the wire having a large diameter, or by applying a luminous paint or the like to prevent the wire from being overlooked.

The vertically movable body 11 is molded from ultra-high molecular weight polyethylene material (trade name: Nurite), has excellent wear resistance, has extremely low frictional resistance with the guide rail 10, and moves inside the guide rail 10. Can move up and down smoothly.

As shown in FIG. 2, this protective safety device using the flexible wire 6 is provided on both left and right sides of the vehicle.

Then, as shown in FIG. 2, when the front vehicle body 2 is bent around the center pivot 4, the flexible wire 6 between the vehicle bodies 2 and 3 expands and contracts in accordance with the bending angle. That is, as shown in FIG. 4, when the distance between the front wheel tire cover 5 and the rear wheel side pipe 8 increases, the vertically movable body 11 rises within the guide rail 10, and the flexible When the wire rod 6 is fed out and the distance between the front wheel tire cover 5 and the rear wheel side pipe 8 narrows as shown in FIG. The flexible wire 6 is taken inside. The above distance varies in the range of 20 to 100 cm for wheel loaders.

During these operations, the weight 14 always applies a constant tension to the entire flexible wire 6, pulling the flexible wire 6 so that it does not slacken, and prohibiting anyone from entering inside the flexible wire 6. can be clearly demonstrated.

As shown in FIGS. 4 and 5, if a tag 17 displaying this fact is hung from the flexible wire 6 that clearly indicates that trespassing is prohibited, it will make the trespassing more strongly known to those who approach it. can do.

Note that the present invention is not limited to this embodiment. For example, one end of the flexible wire 6 is fixed to the side member of the rear wheel side vehicle body 3, and a pulley 9 and a guide are fixed to the side member of the front wheel side vehicle body 2. A rail 10 may be provided, and the flexible wire 6 may be
In addition to flexible wires made of steel, commercially available ropes made of tensile-resistant fibers may also be used. Furthermore, as a means of applying a load to the vertically movable body 11, the vertically movable body 11 itself may be made of a material that is slippery, such as concrete or lead. It is also possible to use a weight as a weight.

[Effect of idea]

According to the present invention, one end of the flexible wire is fixed to either the side member of the front wheel side vehicle body or the side member of the rear wheel side vehicle body of a vehicle having an articulate mechanism, and a pulley and a guide rail are fixed to the other side. , the flexible wire is wound around the pulley, and the other end of the flexible wire is connected to a vertically movable body fitted to the guide rail so as to be vertically movable;
Since a load is applied to this vertically movable body by pulling the flexible wire with a constant tension, the articulate mechanism makes it possible to clearly indicate the non-safety range using the flexible wire. The non-fixed side end is pulled by a vertically moving body inside the guide rail, so it is always tensioned at a constant level without sagging, and even if a person carelessly tries to enter the non-safe area, it is definitely prevented. can. Therefore, this device is effective as a simple safety device for workers in steel works, tunnels, subways, road work vehicles, etc. where safety is important.
In addition, if the flexible wire is coated with luminous paint, the device can fully demonstrate its protective and safety effects even when working in dimly lit places, and if the vertically moving body is made of ultra-high molecular weight polyethylene material, If a weight is attached to the vertically movable body as a means for smooth sliding of the vertically movable body and to add a load to the vertically movable body, the spring will It has no consumable parts, such as, and is inexpensive and highly durable.Furthermore, even if a person or object accidentally touches the flexible wire, the weight will only move up and down with the vertically moving body, which will damage the function. Functionality is stable without any problems.

[Brief explanation of the drawing]

Fig. 1 is a front view of an articulate vehicle equipped with the protective safety device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a perspective view of the protective safety device on the guide rail side, and Figs. FIG. 5 is a front view showing the operation of the protective safety device. 2...Front wheel side vehicle body, 3...Rear wheel side vehicle body, 4...
Center pivot, 5... Tire cover as a side member, 6... Flexible wire, 8... Side pipe as a side member, 9... Pulley, 10... Guide rail, 11... Vertical moving body, 14 ...A weight as a means of applying a load to a vertically moving body.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a vehicle having an articulate mechanism in which a front wheel body and a rear wheel body are connected in a bendable manner around a center pivot, a side member of the front wheel body; At the same time, one end of a flexible wire rod is fixed to one of the side members of the rear wheel side vehicle body to make it clear that entry is prohibited, and a pulley and a vertical guide rail are arranged vertically on the other side,
The flexible wire is wound around the pulley, and the other end of the flexible wire is connected to a vertically movable body fitted to the guide rail so as to be movable vertically, and the flexible wire is connected to the vertically movable body. A protective safety device for an articulate vehicle, characterized in that a load is applied to pull the vehicle with a constant tension. (2) The protective safety device for an artefact vehicle as set forth in claim 1, wherein the flexible wire is coated with a luminescent paint. (3) The protection and safety device for an articulate vehicle according to claim 1, wherein the vertically movable body is made of ultra-high molecular weight polyethylene material. (4) The protection and safety device for an articulate vehicle as set forth in claim 1 of the utility model registration claim, characterized in that a weight is attached to the vertically movable body as a means for applying a load to the vertically movable body.