JPH036097Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a safety suspension vehicle that suspends a lifeline from overhead wires such as the ground wire above during aerial work on electric wires.

(Prior art) The conventional electric wire aerial work is as shown in Fig. 3, for example.
A floating cage 20 with a hanging wheel is hung on the electric wire L ₁ , a worker rides on this floating cage 20, and the floating cage 20 is suspended.
The lifeline W tied to the worker was carried out while moving.
was suspended from a safety suspension car 21 that could run on the ground line G above.

(Problems to be solved by the invention) In the above-mentioned conventional system, the safety suspension vehicle 21 runs freely on the ground line G without any restrictions, so when a worker is suspended from the life line W, the ground line hangs vertically. There is a risk that the vehicle may run along the ground line, making it difficult to rescue the worker or damaging the ground wire G, electric wire _L1 , etc.
Further, there is a problem in that when a worker falls, the lifeline W cannot absorb the shock when it is tensed, giving a strong shock to the worker.

This invention attempts to solve the above-mentioned conventional problems.

(Means for Solving the Problems) In order to solve the above problems, this invention includes a rolling wheel 3 that is pivotally supported by the frame 2 and can roll on the overhead wire G, and a rolling wheel 3 that is pivoted on the frame 2 in the middle. The arm 5 has a braking wheel 4 whose rotation is suppressed at one end and a lifeline W connected to the worker at the other end, and the arm 5 is suspended between the arm 5 and the frame 2. It is composed of a spring 6 that biases the arm 5 to rotate in the direction of pulling the brake wheel 4 away from the overhead line G, and when the worker falls, the arm 5 is rotated against the spring force by the worker's weight and the brake is applied. The ring 4 is brought into pressure contact with the lower surface of the overhead wire G.

(Function) When the worker falls, arm 5 resists the spring force.
rotates. This spring force cushions the impact of the fall on the worker. When the arm 5 rotates, the brake wheel 4 is pressed against the lower surface of the overhead wire G, and the brake wheel 4
Since the rotation is suppressed, the travel of the safety hanging wheel 1 is braked, and the hanging wheel 1 stops at that spot.

(Example) In Figs. 1 and 2, the safety suspended vehicle 1 has a frame 2
, a rolling wheel 3, a brake wheel 4, an arm 5, and a spring 6.

The pair of rolling wheels 3 are rotatably supported on the upper part of the frame 2 and can roll on the overhead wire G.

The arm 5 is pivotally attached to the lower part of the frame 2 at an intermediate portion. A brake wheel 4 is attached to one end of the arm 5 so as to be located below the overhead wire G. The rotation of the brake wheel 4 with respect to the arm 5 is suppressed.

The spring 6 has one end locked to the frame 2 and the other end locked to one side of the arm 5, and constantly urges the arm 5 to rotate. That is, the arm 5 is caused by the spring 6 to
The brake wheels 4 are constantly biased in a direction to pull them away from the overhead wire G.

One end of the lifeline W is latched to the end of the arm 5, and the other end is latched to the worker.This safety suspension vehicle 1 has the rolling wheels 3 hung on the overhead wire G, and the lifeline dangling from this is used to carry out work. It is used by tying it to a person and moving it by pulling the lifeline as the work progresses. Since the brake wheel 4 is always kept away from the overhead wire G by the spring 6, there is no problem with the running of the safety suspended vehicle 1. However, when the worker falls, his weight causes
The arm 5 rotates against the spring force, the brake wheel 4 is pressed against the overhead wire G, and the traveling of the hanging wheel 1 is prevented.
The worker stops in place. At this time, the spring force cushions the impact of the fall on the worker.

(Effects of the invention) This invention automatically stops the worker from running freely when he or she falls, and also buffers the impact on the worker to ensure the safety of the worker and effectively prevent damage to the wires. It is possible to provide a safe hanging vehicle.

[Brief explanation of the drawing]

FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a front view of a conventional example. 1... Safety suspension wheel, 2... Frame, 3... Rolling wheel, 4... Braking wheel, 5... Arm, 6... Spring,
G...Overhead line, W...Lifeline.

Claims (1)

[Scope of utility model registration request] A rolling wheel that is pivotally supported by the frame and can roll on an overhead line, a braking wheel that is pivoted to the frame in the middle and whose rotation is suppressed at one end, and a lifeline connected to the worker is connected to the other end. an arm that can be rotated by the person's weight and press the brake wheel against the lower surface of the overhead wire;
A safety suspended vehicle for electric wire hovering work, comprising a spring stretched between the arm and the frame to rotate and bias the arm in a direction to pull the brake wheel away from the overhead wire.