JPS6340606Y2 - - Google Patents

Description

[Detailed description of the invention] - Industrial application field This invention relates to a safety net for utility poles that is attached to utility poles to prevent tools from falling when working on utility poles for power distribution lines and communication lines. It is an idea.

- Conventional technology and problems Various conventional safety nets for utility poles have been devised and filed, but they were designed without taking into account the fact that even though they are nets, there is considerable wind resistance because they are installed at high places. However, the strength of the pole attachment part was weak, and the string connecting the poles at both ends of the semicircular shape was connected with a material with poor elasticity, such as a belt or rope, which caused the net to become loose when catching fallen objects. Because of its elasticity, the net could not be sufficiently compressed, and its elasticity caused it to be thrown out of the net, and when going up and down the telephone pole to which the net was attached, the net got in the way, making it necessary to climb in a dangerous position.

・Problems that the invention aims to solve This invention can be easily attached to and removed from utility poles, is convenient for transportation and portability, and allows workers to easily move up and down utility poles in a stable position, while preventing falling objects. This provides a safety net that can stably and reliably receive the information.

・Means for solving the problem Therefore, in order to facilitate attachment and detachment operations, the present invention not only reduces the weight of the arm body, but also makes it easier to attach and detach the arms.
As shown in the figure, a hanging rope is provided, and the mounting base is divided to make it easier to transport and carry.A band made of an elastic material is provided when workers go up and down the utility pole.
Even if the arm is moved, it will expand to its original fan shape, and an auxiliary arm is installed on the top of the main arm of the arm to prevent falling objects.This plastic design prevents tools from falling. As the auxiliary arm bends, the tip of the main arm lifts up, and the net closes due to the force of this and the elastic band, making it possible to reliably catch falling objects.

・Example As shown in the figure, in this example, an upper plate 1, an intermediate plate 2, and a lower plate 3 are each fixed at a predetermined interval vertically using a backing member 4 and a supporting member 5.
In this case, the intermediate plate 2 is placed a little closer to the upper plate 1 than the center, a chain support 6 is provided at one end of the intermediate plate 2, and one end of the chain 7 is attached to the other end of the intermediate plate 2, which is fastened with bolts, nuts, etc. A main arm 11 made of a pipe is provided with a member 8 to form a mounting base 9, a ring 10 is provided at the tip, and an auxiliary arm 1 made of a pipe is smaller in diameter and has a ring 13 at the base end.
2 are fixed in a branched manner at a position slightly closer to the center than the tip of the main arm 11 to form an arm body 14, and a net 15 of a size that covers more than half the circumference of the utility pole within 2 m on one side of the utility pole is attached around the net 15. rope 16
The base end of the auxiliary arm 12 is reinforced by threading or sewing to form a net body 17, and the base end of the auxiliary arm 12 is attached to the upper plate 1 of the mounting base 9, and the lower plate 3 is
A plurality of arm bodies 14 are connected to the mounting base 9 by rotatably pivoting the base ends of the main arms 11, and each arm body 14 is rotated at a predetermined interval with the net body 17 open. The peripheral ropes 16 of the net body 17 are connected to the rings 10 and 13 at both ends of each arm body 14, and the arm bodies located on both sides of the plurality of arm bodies 14 connected to the mounting base 9 are 18,1
Connecting rods 20 are provided on the net attachment side of 8 through a plurality of rings 19, and when the connecting rods 20 are passed through the rings 19, they are inserted alternately into the mesh openings on one side of the net body 17. is attached to the arm bodies 18 on both sides, and a band 30 made of an elastic body such as a spring or rubber with rings or hooks 21 attached at both ends is removably connected between the arm bodies 18 on both sides. 14, a ring 22 is provided in the middle of the rope, and the base end of a hanging rope 24 with a hanging ring 23 attached to the tip is attached to the ring 22. Mounting base 9 code 25
are abutments that prevent the arm bodies 18 on both sides from rotating more than necessary.

・How to use To use the present invention, as shown in Fig. 5, the arm body 14 and the net body 17 are tied together and hoisted onto a utility pole, and the hanging ring 23 is hooked onto the step bolt slightly above the mounting position. and hang the safety net.

In this state, the mounting base 9 is lifted to the mounting position and the chain 7 is wound around the utility pole, and then hooked onto the chain receiver 6 and tightened and fixed with the fastening member 8. After that,
The bundled arm body 14 and net body 17 are opened, and the band 30 is connected to the arm bodies 18 and 18 on both sides so as to hold a utility pole, and the net body 17 is maintained in an open state by pulling them together. . (Figures 1 and 2) Normally, safety nets are attached to utility poles facing the road, but in places where one side is a road and the other side is a sidewalk, they are attached to both sides of the utility pole with a slight distance above and below. .

- Effects of the idea When workers go up and down utility poles, they go up and down on the side where the safety net is not attached, but if there is a building on that side and they cannot go up or down, when they reach the position of the safety net. When either arm body 18 on both sides is pushed toward the net body 17 side, the band 30
Since it is made of an elastic material, it can be extended and temporarily push aside the arm bodies 18 on both sides, so it can be easily raised and lowered.

In addition, if an object falls onto the net between the arm bodies 14, the arm bodies 14, 14 on both sides
The bags come together to close the opening of the bag, preventing the net from flying out due to rebound, and allowing the fallen object to be safely captured. This is possible because the band 30 is made of an elastic material, and if a belt or rope is used as in the past, the rebound of the net will cause the falling object to be thrown out of the net. Never.
Furthermore, the band 30 can reduce the impact load when catching a falling object due to its elastic action, reduce the load on the net body 17 and the arm body 14, and prevent damage to the net. In addition, if an object falls onto the arm body 14, in the present invention, an auxiliary arm 1 with a smaller diameter is attached to the upper part of the main arm 11.
2 is provided, and the falling object first hits the auxiliary arm 12, depending on the size and weight of the falling object.
If the object is small, it will simply bounce towards the net and capture it.

In addition, when a falling object is large, the auxiliary arm 12 made of a pipe bends into a V-shape to absorb and soften the impact, and if there is no elastic recovery, the connection between the main arm 11 and the upper plate 1 becomes shorter, and the main arm 11
The tip end is pulled by the connecting part of the auxiliary arm 12 and lifted upward. Therefore, the net body 17 around the arm body 14 also closes at a steeper angle toward the utility pole, making it easier to catch falling objects that bounce off the arm body 14.

[Brief explanation of the drawing]

Figure 1 is a front view, Figure 2 is a plan view, Figure 3 is a perspective view of the mounting base, Figure 4 is a side view of the arm body, Figure 5
The figure is an explanatory view showing the state when attached to a utility pole, and FIG. 6 is a side view of the arm deformed by a falling object. Codes in the diagram: 1... Upper plate, 2... Middle plate, 3... Lower plate, 4... Backing material,
5... Support material, 6... Chain receiver, 7... Chain, 8... Fastening member, 9... Mounting base, 10...
Ring, 11...Main arm, 12...Auxiliary arm, 1
3... Ring, 14... Arm body, 15... Net,
16... Net surrounding rope, 17... Net body,
18...Arm body on both sides, 30...Band.

Claims (1)

[Scope of utility model registration request] The net 15 is expanded with each arm body 14 pivotally connected to a mounting base 9 that is fastened to a utility pole opened.
In a safety net for a utility pole, a band 30 made of an elastic material can be connected between the arm bodies 18 on both sides by being passed around the back of the utility pole, and a hanging rope 24 with a hanging ring 23 at the tip is provided on the arm body 14 at a predetermined position. ,
An auxiliary arm 12 having a smaller diameter than the main arm 11 is provided at the top of the main arm 11 with a ring 10 at its tip, and a ring 13 is provided at the base end of the auxiliary arm 12. A safety net for a utility pole, characterized in that a plurality of arm bodies 14 are provided, each of which has a base end of an auxiliary arm 12 and a base end of a main arm 11 rotatably connected to a lower plate 3.