JPH0537612Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to a arm support device used in the work of rebuilding utility poles, etc., and is particularly used in the work of rebuilding utility poles to their original positions.

(2) Conventional technology In order to efficiently rebuild utility poles without replacing the electric wires, conventionally the electric wires and armatures were removed from the utility pole to be rebuilt, as described in Japanese Patent Publication No. 7353/1983. Attach a temporary arm to an aerial work vehicle, etc., rebuild the utility pole with the electric wire supported by the temporary arm, attach a cross arm to the rebuilt utility pole, and attach the electric wire supported by the temporary arm to the arm. I was gone.

(3) Problems that the invention aims to solve However, since the temporary arm supports the electric wire, when rebuilding a utility pole, it is necessary to remove the wire from the arm and reattach it, which is inefficient. There was a problem.

(4) Means for Solving the Problems In order to solve the above problems, the present invention provides an arm arm that is attached to a horizontal beam provided approximately horizontally at the tip of the boom of a crane vehicle, etc., and has an electric wire attached to it. In the wrist arm support device that removably supports a rotary drive device, a moving device that converts the rotational motion of the rotary drive device into linear motion, a support that slides by the moving device, and a support device that includes a It is equipped with a support bracket that removably holds the armrest.

(5) Effect With the above configuration, by activating the rotary drive device and applying rotational force to the moving device, the support slides forward and the armrest is held between the support and the support bracket. By reversing the rotational drive device, the support slides rearward and releases the arm from being held between the support and the support bracket. After rebuilding the utility pole in the current state and attaching the arm to the new pole, the pole is rebuilt by releasing the arm.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, it is removably attached to a horizontal beam 1 that is attached approximately horizontally to the tip of a boom 16 of a crane vehicle, etc., with a pin 2,
Arm support device A covered with electrically insulating material
A sprocket 4 is attached to the drive shaft of a hydraulic motor 3 which is a rotary drive device, and a chain 7 connects the sprocket 4 with a sprocket 6 attached to a moving device 5 that converts rotational motion into linear motion.
The moving device 5 is built into the arm 8 and a support 9 is attached to the tip of the arm 8 so that the rotational force of the hydraulic motor 3 is applied to the moving device 5 and the arm 8 slides when the moving device 5 operates. A support bracket 10 is located at a position parallel to and facing the support 9 and is pivotable to the left and right so that the arm 11 is detachably held between the bracket 10 and the support 9. It is pivotally supported.

The moving device 5 built into the arm 8 is composed of a threaded shaft 12 to which the sprocket 6 is attached, and a nut 13 that is screwed onto the threaded shaft 12 and whose outer periphery is fixed to the inner periphery of the base of the arm 8. When the screw shaft 12 is rotated by the operation of the motor 3, the nut 13 moves along the screw shaft 12, and the movement of the nut 13 causes the arm 8 to slide and move the support 9 against the support bracket 10. to approach or separate.

With the above configuration, when rebuilding a utility pole, the horizontal beam 1 is moved and the support bracket 10 of the arm support device A is moved, as shown in FIG.
Then, the hydraulic motor 3 is operated to rotate the screw shaft 12, and the rotation of the screw shaft 12 causes the nut 13 to be inserted along the screw shaft 12. moves and Natsu 1
3, the arm 8 to which the nut 13 is fixed slides forward, bringing the support 9 pivotally supported at the tip of the arm 8 closer to the support bracket 10, and the support 9 and the support bracket 10 are separated. 1 armband between
1 is pinched, stop the hydraulic motor 3,
By stopping the sliding movement of the arm 8, the support 9 is held in a position where the armrest 11 is held. Next, the fixture 1 that fixes the armrest 11 to the telephone pole 14
5 is removed, the utility pole 14 and arm 11 are separated, and with arm 11 supported by arm arm support device A, the utility pole 14 is pulled out and a new utility pole is rebuilt at the same position. Fix the cross arm 11 to a new utility pole, reversely rotate the hydraulic motor 3, slide the arm 8 backward, separate the support 9 from the support bracket 10, and release the clamp of the cross arm 11. As a result, the utility pole reconstruction work will be completed.

Note that it is also possible to attach a wire support to the horizontal beam to support the wires.

(7) Effects of the invention As described above, according to the invention, it is possible to rebuild utility poles with the wires still attached to the arms, so this invention is particularly effective in improving the work efficiency of utility pole reconstruction work. It is valid.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a detailed view of the main parts, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an explanatory diagram of the operation. 1...Horizontal beam, 3...Hydraulic motor, 5...
Moving device, 9... Support device, 10... Support bracket, A... Bracelet support device.

Claims (1)

[Scope of utility model registration request] In a arm support device that removably supports a arm that is attached to a horizontal beam provided approximately horizontally at the tip of a boom of a crane vehicle, etc., and has an electric wire attached thereto, the rotational drive device and the rotational movement of the rotation drive device are What is claimed is: 1. A arm arm support device comprising: a moving device that converts movement into motion; a support that slides and moves by the moving device; and a support bracket that removably holds an arm arm between the support tool.