JPH0246915Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention is a fall prevention rope used when a worker steps onto a power transmission line during tension work when constructing a new power line or during maintenance and inspection work on an existing power line. It is.

<Prior art> Conventionally, in the above-mentioned work, there is a fall prevention rope with connecting members attached to both ends and a figure-eight ring inserted in the center of the rope, as shown in Figure 5. Work was carried out by connecting a hook and a figure-of-eight ring, or by hooking a rope to the hook of the hook, making it into a loop, and connecting it to a safety belt with the other connecting member attached, and then leaning over the electric wire. However, when used with conventional high-voltage power transmission towers, the distance between the towers is short and the power lines and
The wire catenary was also loose, so if a worker fell, the rope would not slip so much that it could be used.

<Problems that the invention aims to solve> However, in recent years, very high voltage (VHV) and ultra-super high voltage (UHV) power transmission has been introduced, and the site where the towers are constructed is in a mountainous area, and the number of towers is kept to a minimum due to protection of the natural environment. As a result, the cable/wire catenary is also steeply sloped, making it difficult for conventional fall prevention ropes to prevent workers from hooking up if they fall.
Because of the loop, the rope cannot be tightened completely and the wire
There was also the possibility that it would slip on the wire and break due to friction.

Therefore, the object of the present invention is to develop a fall prevention rope that completely tightens and prevents slipping during a fall, thereby eliminating breakage due to friction.

<Means for solving the problem> From the above, in order to completely narrow down the electric wire/wire when it falls, it is possible to use the end of the rope as a loop instead of using the hook/8-shaped ring.
Since the cross section is circular, it makes point contact and cannot be gripped sufficiently, so this is a fall prevention rope that uses a belt to make surface contact and provide sufficient gripping force to prevent slipping.

<Function> As shown in FIG. 3, in the present invention, first, the connecting member 5 is inserted into the ring part 3 around an electric wire/wire, and when the stopper 11 comes out from the ring part 3, it is made into a ring shape.

Next, wrap the hook-and-loop fastener 7 attached to the vinyl pipe 1 around the electric wire/wire to temporarily secure it.

Then, the connecting member 5 is connected to the worker's safety belt and the worker rides out over the electric wire.

If the worker slips and falls, the ring part 4 of the belt part 8 is pulled and the ring part 3 is squeezed as shown in Figure 4 to securely grip and cut the electric wire. Prevents workers from falling.

<Example> In the present invention, a stopper 11 is provided at one end in the center of a belt 2, and a vinyl pipe 1 with a hook-and-loop fastener 7 attached to the center is inserted, and both ends of the belt 2 are folded back to form ring portions 3 and 3, respectively. 4, a complementary belt 21 is placed along the inner side of the ring portion 3 and overlapped and sewn to form a belt portion 8, and the other end of a rope 6 of a predetermined length with a connecting member 5 attached to one end is attached to one end. It has a structure in which it is attached to the ring part 4 of.

<Effects of the invention> Due to the above structure, the invention product can securely grip electric wires/wires on steep slopes without slipping when dropped.
Falling can be prevented.

In addition, the conventional product had a hook and 8-shaped ring, which were heavy and could slide toward the worker during use, creating a danger of getting entangled in the worker's feet, but the new product is lightweight and uses a temporary hook-and-loop fastener. Since the distance between the machine and the worker can be maintained appropriately, there is no longer any risk associated with conventional products. In addition, the conventional product could damage electric wires, etc., but the invented product uses a belt type, so there is no chance of damage. or,
The conventional product could become dangerous when the hook is removed, but the invented product cannot be removed due to its structure, so it does not become a state without a trunk and is no longer as dangerous as the conventional product. . In addition, since it is lightweight, it can be easily transported to the top of a steel tower in a mountainous area, and worker fatigue can be alleviated. In addition, since an elastic vinyl pipe 1 and a stopper 11 are provided in the center of the belt, the ring of the belt that is wrapped around the electric wire is maintained at a constant size, making it easy for workers on the line to move. It has practical effects such as good tracking and not interfering with work.

[Brief explanation of drawings]

Fig. 1 is a front view of the present invention, Fig. 2 is a plan view, Fig. 3 is a usage state, Fig. 4 is a usage state when dropped, Fig. 5 is a front view of the conventional product, and Fig. 6 is Front view of a conventional product made into a ring shape. In the figure, numeral 1 is a pipe, 2 is a belt, 3 and 4 are ring parts, 5 is a connecting member, 6 is a rope, 7 is a hook-and-loop fastener, and 8 is a belt part.

Claims (1)

[Scope of utility model registration request] A pipe 1 is inserted into the center of the belt part 8, both ends of the belt 2 are folded back to form ring parts 3 and 4, and the other end of a rope 6 of a predetermined length with a connecting member 5 attached to one end is attached to one end. attached to the ring 4, said pipe 1
A fall prevention rope characterized by a structure in which a hook-and-loop fastener 7 of a predetermined length is attached to the lower part.