JPH036100Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a self-propelled come-along that is equipped with a self-propelled vehicle at the rear of the come-along main body for overhead wires.

(Prior art and problems to be solved) FIG. 1 shows a schematic side view of a self-propelled come-along attached to an overhead power line.

In the drawings, reference numeral 1 denotes a come-along main body, which has a cylindrical shape that can be opened and closed by a hinge structure 2, and has a partially tapered inner surface. A wedge with a two-part structure is inserted into this tapered inner surface, and the deeper the wedge is inserted, the smaller the diameter of the wire gripping hole formed on the mating surface of the wedge tightens the wire. Reference numeral 3 designates a pin that receives the pushing force of the self-propelled vehicle via the push rod 6 of the self-propelled vehicle 5, and may be provided at the rear of the come-along body 1, but a pin on the hinge 2 may also be used. 4 is a handle provided on the come-along body 1;
By pulling a wire (not shown) tied to the tip of the wedge using a winch or the like on the ground, a cam mechanism presses the end face of the head of the wedge, pushing the wedge into the inner surface of the main body 1 and stably gripping the electric wire 2.

5 is a self-propelled vehicle located behind the come-along main body 1 in the traveling direction; 6 is a push rod for pressing the come-along main body 1; and 7 is a power cable for supplying driving force to the self-propelled vehicle 1.

Therefore, during line tension work, the self-propelled vehicle 5 presses the come-along main body 1 and stops it at a predetermined position, and after retrieving the self-propelled vehicle 5 by running in the opposite direction, the handle 4 of the come-along main body 1 is tied. The attached wire is pulled by a winch or the like installed on the ground, and the wedge is pushed into the inner surface of the main body 1 as described above to remove the wire 2.
Grip it stably and tighten it.

However, when the self-propelled vehicle 5 runs on the electric wire A while pushing the come-along body 1, the come-along body 1 is also loaded with the weight of the wire, the metal wheel that it passes, etc. The friction between the wedge and the electric wire in the vehicle 1 increases, and as a result, the pushing force of the self-propelled vehicle 5 must be increased, and therefore the self-propelled vehicle 5 itself needs to be increased in size.

(Means for solving the problem) The present invention solves the above-mentioned problems and provides a self-propelled come-along that reduces friction between the wedge and the electric wire.The feature is that the push rod of the self-propelled vehicle is The reason is that the main body is configured to be lifted and pressed.

(Embodiment) FIGS. 2A and 2B are explanatory views of embodiments of the push rod of the present invention.

In FIG. 2A, the tip 6' of the push rod 6 has a shape that fits with the tip of the pin 3 of the come-along main body 1, but the center line of each is g. It is located above. As a result, the pin 3 is in a state where it is lifted upward when the two tips are fitted together. As a result, the self-propelled vehicle 5 side of the come-along body 1 is also lifted, reducing friction with the electric wire A.

In addition, FIG. 2B shows that by making the shape of the tip 6'' of the push rod 6 into a tapered shape that expands downward,
When the push rod 6 presses the pin 3, the pin 3 is lifted upward.

(Effect of the invention) As described above, according to the self-propelled come-along of the invention, the tip of the push rod that fits with the pin is shifted from the center line of the pin, or the tip of the push rod is tapered. By lifting the come-along body upward and pressing it against it, the friction between the come-along wedge and the electric wire is reduced.
It has the advantage of reducing the pushing force of self-propelled vehicles.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a self-propelled come-along attached to an electric wire, and FIGS. 2A and 2B are explanatory diagrams of an embodiment of the push rod in the present invention. A... Overhead wire, 1... Come-along body, 3
...pin, 4...handle, 5...self-propelled vehicle, 6...push stick.

Claims (1)

[Scope of utility model registration request] In a self-propelled come-along, which includes a come-along main body through which an overhead electric wire is inserted, and a self-propelled vehicle located at the rear of the come-along body in the direction of movement and runs on the overhead electric wire by pressing the come-along main body with a push rod, the push rod pushes the come-along main body. A self-propelled come-along characterized by being configured to lift and press.