JPS6233474Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device that runs on existing wires and extends new wires during distribution line re-covering work. It is characterized by being able to run over obstacles such as:

Embodiments of the present invention will be described below with reference to the drawings. A balance weight W is held at the bottom of the first frame 1, and the upper end of a hanging arm 2 bent in a U-shape is pivotally attached to the center of the first frame 1, and the center portion of the second frame 3 is pivotably attached to the front and rear ends of the suspension arm 2. It is worn. As the balance weight W, a battery for driving the motor M can be used.

The second frame 3 is bent downward into a U-shape, and the center of the chassis 4 is pivotally attached to the lower ends of the legs 3a, 3b at both the front and rear ends.

The chassis 4 is provided with a pair of front and rear wheels 5, 5 each driven by a central motor M. Further, a bracket 4a extending forward is provided above the front part of the chassis 4, and an idler roller 6 is pivotally attached to this bracket 4a.

As shown in FIGS. 3A and 3B, the wheels 5 each include a collar 5a that expands outward in a V-shape,
A large number of round teeth 5b are formed on the outer peripheral edge of this collar 5a.

The rope R is locked to the first frame 1 and stretched before the electric wire is extended.

Next, the effect will be explained. If the wheels 5 are placed on the existing electric wire L and the motor M is rotated, this device will run on the electric wire L while pulling the rope R. As shown in Fig. 4, when there is a protruding obstacle such as an insulator of a telephone pole on the way, the idler roller 6 first collides with it, rotates the chassis 4 and rides on it, and then sequentially moves the front and rear. The wheels 5, 5 move over this. When the wheel 5 passes over the insulator, the insulator is sandwiched between the flanges 5a, 5a, so that the wheel 5 can move forward without falling off.
Moreover, since the vertical movement caused by climbing over is absorbed by the rotation of the chassis 4 and the rotation of the second frame 3, the device as a whole hardly experiences vertical movement. When the branch line B is running as shown in FIG. 5A, when the device moves in the direction of the arrow Draw branch line B to
When the vehicle runs on this and cannot fully pull the branch line B, the round teeth 5b catch on it, and the vehicle straddles the branch line B between the adjacent round teeth 5b, 5b. Next, as shown in FIG. 5C, when the device travels in the direction of the arrow Y, the wheels 5 travel while pushing up the branch line B halfway, and when they can no longer be pushed up, the round teeth 5b move toward the branch line B. Similarly, it travels across the branch line B between the adjacent round teeth 5b, 5b.

As explained above, the present invention pivots the center of the second frame 3 to both the front and rear ends of the first frame 1 from which the balance weight W is suspended,
The center of a chassis 4 is pivotally connected to both the front and rear ends of each second frame 3, and wheels 5, 5 driven by a motor M are pivoted to the front and rear of each chassis 4, respectively, and the front upper part of each chassis 4 is An idler roller 6 is provided on the wheel 5.
are each provided with a flange 5a that expands outward in a V-shape, and a large number of round teeth 5b are provided on the outer periphery of the flange 5a.
Since the vehicle is configured to form a structure, it is possible to freely overcome obstacles such as insulators and branch line B on the way of travel without stopping, and to run stably. This provides a wire drawing device with a simple structure and low cost.

[Brief explanation of drawings]

Fig. 1 is a front view, Fig. 2 is a perspective view, Fig. 3A is a front view of the wheel, Fig. 3B is a partial sectional view of the same, Fig. 4 is an explanatory diagram of the insulator riding state, Fig. 5A is A perspective view of the electric wire branch, and FIGS. 5B and 5C are front views of the wheels passing through the branch. 1...First frame, 3...Second frame, 4
...Base, 5...Wheel, 5a...Brim, 5b...Round tooth, 6...Idle roller, W...Balance weight, L...Electric wire.

Claims (1)

[Scope of utility model registration request] The center of the second frame is pivotally connected to both the front and rear ends of the first frame, from which a balance weight is suspended, and the center of the chassis is pivotally connected to the front and rear ends of each second frame. Wheels driven by motors are provided, and play rollers are provided above the front of each chassis, and each wheel is provided with a flange that expands outward in a V-shape, and a flange is provided on the outer periphery of the flange. , a distribution line extension device that has a large number of round teeth and runs on existing wires by pulling a tow rope that connects to new wires.