JP2001275241A - Clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp which can fix a power distribution line at a single movement. SOLUTION: This clamp consists of a fixing part for fixing to a porcelain insulator installed on a pole, an aperture on the side opposite to the fixing part into which part a core of the distribution line is inserted, a wedge which receives the core of the inserted distribution line when moved to the fixing part side, and clamps the core of the inserted distribution line when moved to the aperture part side, and an energizing means which energizes always the wedge toward the aperture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp, and more particularly to a clamp capable of connecting a distribution line to a utility pole with one touch.

[0002]

2. Description of the Related Art Conventionally, as a clamp used for connecting a distribution line to a power pole, a bolt-clamp type clamp and an end clamp are known. In addition, these clamps have been proposed as compression clamps which are large and are miniaturized because they impair the aesthetics (scenery) of the city.

[0003]

However, in the conventional clamp described above, besides the work of stripping the covering of the distribution line, the work of tightening bolts and nuts, the work of driving wedges, or the compression using a compressor is used. There is a drawback in that a large amount of work is required on the pole, requiring work and the like.

[0004] In particular, in live-line work performed in a state in which a current is applied to a distribution line, indirect work using a hot stick or the like is performed on a pole, so that work on the pole is to be simplified as much as possible. Was desired.

The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to provide a clamp that can fix a distribution line with one touch.

[0006]

SUMMARY OF THE INVENTION A clamp according to the present invention comprises a mounting portion for mounting on an insulator provided on a utility pole, and an opening provided on the opposite side of the mounting portion for inserting a core of a distribution line. A wedge body for receiving the core of the inserted distribution line when moving to the mounting portion side, and holding the core of the inserted distribution line when moving to the opening side; and a wedge body. A biasing means for constantly biasing the opening is provided on the opening side.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1A is a plan view of a clamp according to an embodiment, FIG. 1B is a front view thereof, and FIG. 1C is a right side view thereof.

The external shape of the clamp 1 is a single rod, and one end of the clamp 1 in the longitudinal direction (FIG. 1).
At the left end side in FIGS. 1A and 1B, a clevis-type mounting portion 2 for mounting the clamp 1 to a pin of an insulator such as a tension insulator provided on a telephone pole (not shown) is provided. The rod is formed in a housing 3 having a hollow interior. In the figure, reference numeral 4 denotes a window provided on the side surface of the housing 3, and reference numeral 5 denotes an opening provided at a position facing the position of the mounting portion 2.

The upper and lower wall surfaces 6a and 6b in the longitudinal direction of the holes provided in the housing 3 are formed as tapered surfaces that become narrower toward the opening 5. And
A wedge body 7 is provided on both of the wall surfaces (tapered surfaces) 6a and 6b.
a and 7b are provided slidably, respectively. That is, a double wedge-shaped clamp is formed in the housing 3.

The inclination of both wall surfaces (tapered surfaces) 6a and 6b and the size of both wedge members 7a and 7b are determined by the wedge members 7a and 7b.
Moves to the larger slope (Fig. 1 (a),
(When moving to the left in (b)), the core of the distribution line (not shown) is received between the wedges 7a and 7b, and when the wedges 7a and 7b move to the right (FIG. ) And (b) when moved to the right),
It is determined so that the core wire located between the two wedge bodies 7a and 7b can be clamped.

In the drawings, 8, 8... Are screws for movably holding the wedge bodies 7a, 7b in the housing 3, and penetrate through elongated holes 9, 9 provided in the longitudinal direction of the housing 3. It is provided. Reference numeral 10 denotes a spring provided in the housing 3 and corresponding to the urging means of the present invention.
a and 7b are always urged toward the opening 5 side.

FIGS. 2A and 2B show a procedure for fixing a distribution line to the clamp 1 having the above-described configuration. First, the mounting portion 2 of the clamp 1 is mounted on an insulator pin provided on an arm of a utility pole (not shown). And
The distribution line L has wedge bodies 7a, 7b covered at its tip.
The core wire L 'is stripped off by a length substantially equal to the length of the core wire L'.

When the end of the core wire L 'from which the coating has been stripped is inserted into the opening 5, the two wedge members 7a and 7b move against the spring 10, and the two wedge members 7a and 7b are moved by the tapered surfaces of the wall surfaces 6a and 6b. The distance between the wedges 7a and 7b gradually increases, and finally the core wire L 'can be located between the two wedges 7a and 7b. Then, the distribution line L is pushed into the clamp 1 until the ends of the coating of the distribution line L contact the ends of the wedge bodies 7a and 7b (see FIG. 2A).

The ends of the covering of the distribution line L are both wedge bodies 7a,
When the pushing of the distribution line L is stopped when the distribution line L comes into contact with the tip of the distribution line 7b, the two wedges 7 having the core line L 'of the distribution line L in the middle are used.
The a and b move toward the opening 5 by the action of the spring 10, and the core wire L 'is held between the two wedges 7a and 7b.
When a force in the opposite direction to the above-described pushing direction is applied to the distribution line L due to the tension of the distribution line L or the like, the wedge effect of the two wedge members 7a and 7b causes the core wire L 'to be separated from the two wedge members 7a and 7b.
(See FIG. 2B).

Although not shown in the drawing, a number of grooves are provided on the surfaces of both wedges 7a and 7b that are in contact with the core wire L 'in a direction perpendicular to the longitudinal direction of the core wire L'. As a result, there is no slippage of the core wire L 'with respect to the wedge bodies 7a and 7b, and a high clamping force can be obtained.

The clamp 1 having the above-described structure can fix the distribution line L in a so-called one-touch manner, so that the work on the pole can be extremely simplified, and particularly, the hot wire work can be performed safely and
It can be done easily.

In the above-described example, the wedge body is of a double wedge type, but may be a single wedge body. However, when the two wedges are used as described above, a clamp having a high clamping force can be obtained.

[0018]

According to the present invention, there is provided a clamp for attaching to an insulator provided on a utility pole, an opening provided on a side opposite to the attachment for inserting a core of a distribution line, and A wedge body for receiving the inserted distribution line core when moving toward the opening side, and holding the inserted distribution line core line when moving toward the opening side, and inserting the wedge body toward the opening side. In addition, since the urging means is always energized, the electric wire can be gripped without performing bolt tightening, wedge driving, and the like. Therefore, the work on the pillar can be simplified, and particularly, the live-line work can be performed safely and easily.

[Brief description of the drawings]

1A is a plan view of a clamp according to an embodiment, FIG. 1B is a front view thereof, and FIG. 1C is a right side view thereof.

FIG. 2 is an explanatory diagram when a distribution line is fixed to a clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp 2 Attachment part 3 Housing 4 Window 5 Opening 6a, 6b Wall (tapered surface) 7a, 7b Wedge 8 Screw 9 Slot 10 Spring L Distribution line L 'Core wire

Claims (1)

[Claims] 1. A mounting part for mounting to an insulator provided on a telephone pole, an opening provided on a side opposite to the mounting part for inserting a core wire of a distribution line, and A wedge body for receiving the inserted core of the distribution line and holding the inserted core of the distribution line when moved toward the opening, and constantly urging the wedge toward the opening. A biasing means, comprising: a clamp.