JPH08228414A - Arm clamp - Google Patents

Abstract

PURPOSE: To provide an arm clamp which can be attached to the arm of a concrete pole, etc., by a single action. CONSTITUTION: When a shaft 3 is pulled down, a hook 6 fixed to the front end section of the shaft 3 moves downward and is engaged with a metallic member 1. When the hook 6 is put on the member 1, the internal surface 7 of the hook 6 comes into contact with a metallic piece 5 and pushes the piece 5 forward and an arm is strongly held between the front wall of the hook 6 and the piece 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle electrode clamp or the like used for electrically connecting a bypass cable to a distribution cable which is energized in uninterruptible construction of a 6600-volt distribution line. -The present invention relates to an arm clamp used when temporarily supporting an arm such as a pillar.

[0002]

2. Description of the Related Art Conventionally, an arm clamp having a structure as shown in FIG. 4 has been used. The screw rod 100 was turned to push the clamping plate 200 upward, and the arm clamp 400 was fixed to the arm 300 (shown by the dotted line in FIG. 4). In order to push the tightening plate 200 upward, the screw rod 100 must be rotated by the insulating rod of the indirect tool, which is troublesome and has a drawback that the live-line construction requiring urgent time is too long. The development of tools that can be done with one touch has been eagerly awaited.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks described in the prior art, and does not require the conventional work of rotating a threaded rod and the like. The purpose is to provide an arm clamp that can be attached to the.

[0005]

[Means for Solving the Problems] The protrusion of the bottom of a U-shaped metal member for mounting an arm is loosely mounted on a shaft rod, and a metal piece is moved back and forth on the back surface of the metal member. The hook is shaped like an inverted U-shape and moves downward by fixing the inverted U-shaped hook to the tip of the shaft rod and pulling the shaft rod downward. The hook is fitted to the member, and at this time, the inner surface of the inverted U-shaped hook hits a metal piece and pushes the piece forward.

[0006]

[Function] After the opening of the U-shaped metal member is hooked on the arm and the shaft rod is pulled downward, the inverted U-shaped hook is fitted to the metal member, At the same time that the opening is closed, the metal piece is pushed forward to firmly fasten the arm between the front wall of the inverted U-shaped hook and the metal piece.

[0007]

Embodiments of the present invention will be described with reference to the drawings. 1 to 3, a protrusion 2 on the bottom surface of a U-shaped metal member 1 for mounting an arm 8 such as a concrete column (shown by a dotted line in FIG. 1) is attached to an axial rod 3 Attach loosely to. Therefore, the shaft rod 3 can move up and down, leaving the U-shaped metal member 1. A through hole 9 is formed in the back surface 4 of the metal member 1, and the metal piece 5 is fitted into the through hole 9 so as to be movable back and forth. For example, the front end and the rear end of the metal piece 5 are larger than the through hole 9 so that the metal piece 5 does not come off from the back surface 4 of the metal member 1. When the inverted U-shaped hook 6 is fixed to the tip end of the shaft rod 3 and the shaft rod 3 is pulled downward, the inverted U-shaped hook 6 moves downward and is made of a U-shaped metal. It fits tightly to the member 1, and at that time, the inner surface portion 7 of the inverted U-shaped hook 6 hits the metal piece 5 so that the piece 5 can be pushed forward smoothly. As shown in FIG. 1, a taper 10 is attached to the inner lower end of the inverted U-shaped hook 6.

Reference numeral 11 is a locking portion for locking an insulating rod for vertically moving the shaft rod 3 and for locking a support member 12 for temporarily supporting a needle electrode clamp or the like. The support member 12 is
It is composed of a temporary clamp support bar 13, a cable holder 14, a magnet base 15 and the like. FIG. 3 shows a state in which the support member 12 is locked to the locking portion 11. In addition, a U-shaped metal member 1, an inverted U-shaped hook 4,
The metal piece 5 is made of a light metal such as an aluminum alloy.

In practice, a U-shaped metal member 1
After the opening of the above is hung on the arm 8 such as a concrete pillar and pushed in sufficiently, the insulating rod (not shown in the figure) joined to the locking portion 11 is pulled downward to pull the shaft rod. When 3 is pulled down, the inverted U-shaped hook 6 is pulled down, and its front wall first closes the upper part of the opening of the U-shaped metal member 1 and moves to the front of the arm 8. , And the arm 8 is captured in the opening of the U-shaped metal member 1. Further, when the shaft rod 3 is pulled down, the taper 10 at the inner lower end of the inverted U-shaped hook 6 hits the piece 5 and starts pushing the piece 5 forward, so that the hook 6 of the inverted U-shaped hook 6 is released. Inner surface 7
When the piece hits the piece 5, the piece 5 is steadily pushed forward and strongly presses the arm 8 forward, so that the arm 8 is pushed forward by the front wall of the inverted U-shaped hook 6 and the metal piece. Tighten tightly between five.

[0010]

Since the present invention is constructed as described above, the conventional work of rotating the screw rod is not necessary at all, and the arm clamp can be concretely pulled down only by pulling down the shaft rod. Since it can be attached to an arm such as a pillar with a single touch, it is possible to save time and work quickly.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention.

FIG. 3 is a front view showing a state in which a support member is locked.

FIG. 4 is a side view of a conventional arm clamp.

[Explanation of symbols]

 1 U-shaped metal member 2 Projection portion 3 Shaft bar 4 Rear surface of U-shaped metal member 5 Metal piece 6 Reversed U-shaped hook 7 Inner surface of inverted U-shaped hook 8 arm 9 through hole 10 taper 11 locking part 12 support member 13 temporary clamp support rod 14 cable holder-15 magnet stand 100 screw rod 200 tightening plate 300 arm 400 arm clamp

Claims (1)

[Claims] 1. A U-shaped metal member (1) on which a U-shaped metal member (1) on which an arm is mounted is loosely mounted on a shaft rod (3). A metal piece (5) is fitted on the back surface (4) of (1) so as to be movable back and forth, and an inverted U-shaped hook (6) is fixed to the tip end of the shaft rod (3), When 3) is pulled downward, the inverted U-shaped hook (6) moves downward and fits into the U-shaped metal member (1), at which time the inverted U-shaped hook (6) The arm clamp characterized in that the inner surface portion (7) of (6) hits the metal piece (5) and pushes out the piece (5) forward.