JPH02307322A - Anchor clamp - Google Patents

Abstract

PURPOSE:To facilitate a hot-line work by constituting an anchor clamp so that a filament groove provided to a wedge main body may at least be curved to go away from the stretch direction line of a cable. CONSTITUTION:A wedge body 4 is formed into a triangular wedge shape in front, where the bottomedge section 4b of a triangular plate section 4a will slidingly be engaged with the sliding groove 2b of a clamp body 2 and to the upper end section of the triangular section 4a a filament groove 4c is provided. The filament groove 4c is formed by rectilinearizing the first half section 4c1 of the wedge body, making the following intermediate section 4c2 hollow a little and curving the rear section 4c3 following the intermediate section 4c2 in the direction going away from the main body 2a of the clamp body 2 towards the outlet on a jumper side.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a detention clamp suitable for working with live wires.

(Conventional technology) Various improvements are sometimes made to existing distribution lines due to increased demand for electricity. For example, in the following cases:

(1) Since it is necessary to install a new switch in the area where the wire is stretched with a pin insulator, the wire is stretched with a retaining clamp.

(2) Reconstruction of utility poles.

(3) Replacement of retaining clamp.

In the above-mentioned case, the distribution line is held by a retaining clamp C connected to the front and rear of the utility pole 1O, etc. via an insulator 13, as shown in FIG. It is attached in a curved state above the arm 11 installed horizontally on the arm 10.

However, even when performing such work, it is desired to perform live-line work without power outages in order to stably supply power.

In this type of live wire work, the restraining clamp must be operated from a pole using an operating rod or the like.

Conventional retaining clamps are, for example, disclosed in Japanese Utility Model Publication No. 60-22753.
As described in the publication, it has two wedge bodies, a wire is inserted between the two wedge bodies, the wedge body is pushed into the clamp body, and the clamp body is fastened with a fastening bolt. Although the striae are grasped by
The striated grooves of the wedge body are approximately horizontal.

In order to grip the wire with the retaining clamp, the wire is inserted into the wire grooves of both wedge bodies with the wedge body almost removed from the clamp body, and the wires are fastened together with bolts.

(Problem to be Solved by the Invention) As mentioned above, since the wire grooves of the wedge body of the conventional retaining clamp are approximately horizontal, it is generally necessary to use a tool to curve the jumper portion of the wire upward. There was a problem that the work was troublesome because the wires were bent during use.

(Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, in a wedge-shaped restraining clamp, at least the wire groove provided in the wedge body is directed toward the jumper side exit, and the tension of the electric wire is The retaining clamp is constructed by curving it away from the installation direction.

(Function) As described above, in the retaining clamp of the present invention, at least the linear groove provided in the wedge body is curved toward the jumper side exit and away from the tensioning direction line of the electric wire. When the wire is attached to the wedge body, the jumper section of the wire will naturally curve outward.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

In the figure, 1 is a covered wire, 1a is its covering, and 1b is the covering 1a.
These are the striae that have been stripped away.

2 (see FIG. 2) is the clamp body of the retaining clamp, and 2a is the main body of the rod-shaped clamp body.

A wedge-shaped sliding groove 2b is formed along the longitudinal direction of the main body 2a, and a clevis-shaped connecting hole 2C for retaining the clamp is provided at one end of the main body 2a. A filament receiver 2d having a substantially C-shaped cross section is formed integrally with the main body 2a at the end. Also 2e
3 is a connecting hole protruding from the outside of the filament receiver 2d, and 3 is a liner made of an aluminum plate attached to the upper jaw of the filament receiver 2d. Note that 2f is an opening of the filament receiver 2d.

Also, 4 (see Figure 3) is a wedge body, and this wedge body 4
As shown in FIG. 3(a), its front shape is formed into a substantially triangular wedge shape, and the bottom edge 4b of the triangular plate-shaped portion 4a slides into the sliding groove 2b of the clamp body 2. The triangular plate-shaped portion 4a has a linear groove 4c on its upper edge.

This linear groove 4C makes the wedge-shaped substantially front half 4c+ straight, slightly recesses the intermediate section 4cz that follows it, and further extends the rear section 4C3 following the intermediate section 4C2 toward the jumper side exit toward the main body 2a of the clamp body 2. It is curved in the direction away from the

Also, on one side of the intermediate portion 4C2 of the filament groove 4C, there is a presser foot 4.
d is provided in a protruding manner, and a bolt hole 4e is provided in the presser foot holder 4d, which has an elliptical planar shape as shown in FIG. will be established.

Further, as shown in FIG. 3(C), approximately triangular guides 4f for inserting the filament are protrudingly provided at two locations on the outer edge of the filament groove 4c on the side opposite to the presser foot receiver 4d.

Further, reference numeral 5 (see Fig. 4) is a presser foot that works together with the wedge body 4 to clamp the filament 1b. A threaded groove 5b is formed on one side of the lower surface to face the threaded groove 4c of the wedge body 4, and a protrusion that serves as a fulcrum when tightening the thread is formed on the other side of the lower surface. 5C is provided to protrude downward, and a substantially triangular guide 5d for inserting the wire is provided to protrude from the outer edge of the filament groove 5b.

Further, 6 (see Fig. 5) is a coil spring, and this coil spring 6 is designed to prevent it from rotating together with the bolt when inserted into the elliptical bolt hole 4e (see Fig. 5).
It is formed by winding it into an ellipse as shown in the figure.

Note that 7 (see FIGS. 1 and 6) is a bolt, 8 is a spring washer, and 9 is a washer.

FIG. 10 shows an example of how to use the retaining clamp according to the present invention. In the figure, 10 is a utility pole, 11 is an arm installed horizontally on the utility pole 10, 12 is a connecting fitting connected to the arm 11, and 1
3 is a tension insulator connected to this connecting fitting 12, and the retaining clamp is connected to the tension insulator 1 through the connection hole 2c of the clamp body 2.
Connect to 3.

In order to attach the covered wire 1 to the retaining clamp, for example, remove the covering 1a from the portion of the covered wire 1 to be clamped, and then attach the wire 1 to the clamp.
b is exposed and most of the wedge body 4 is removed from the wire receiver 2d of the clamp body 2, as shown in FIG.
The wire 1b is pushed in the direction of arrow A between the wedge body 4 and the presser foot 5, which are connected by the bolt 7 via the coil spring 6, nine washer 9, and spring washer 8, to form a wedge as shown in FIG. Line groove 4C of body 4 and line groove 5 of presser foot 5
Insert the filament 1b into the opening 2 of the filament receiver 2d.
The filament 1b is also inserted between the liner 3 of the filament receiver 2d and the filament groove 4C of the wedge body 4 via f, and in this state, the wedge body 4 is inserted into the filament receptor 2d of the clamp body 2. Push the filament L between the rust body 4 and the filament groove of the filament receiver 2d using a tool.
Then, the bolt 7 is tightened with a tool from above the column so that the filament 1b is also grasped between the wedge body 4 and the presser foot 5.

In addition, as another procedure, the filament lb is pushed through the opening between the wedge body 4 and the presser foot 5, and a line is inserted between the filament groove 4C of the wedge body 4 and the filament groove in the filament receiver 2d. Insert the strip 1b, temporarily tighten the wedge body 4 and the presser foot 5 with the bolt 7 using a tool from above the column, and then push the wedge body 4 into the clamp body 20 filament receiver 2d with the tool to line the wedge body 4 and the presser foot 5. The filament 1b is grasped between the filament grooves of the filament support 2d, and the bolt 7 is securely tightened with a tool from above the column so that the filament 1b is also grasped between the wedge body 4 and the presser foot 5.

Further, FIGS. 7 to 9 show a second embodiment of the present invention, and in the figures, the same reference numerals as those described above indicate equivalent parts.

The difference between this second embodiment and the first embodiment described above is that in the first embodiment, the bolt 7 was screwed into the presser foot 5 through a bolt hole provided in the wedge body 4. In the second embodiment, the bolt 7 is inserted into the bolt hole 5e provided in the presser foot 5.
(See Figure 9) Screw hole 4g provided in wedge body 4
The difference is that the second embodiment is screwed into the second embodiment (see FIG. 8), and the other configurations are the same as those of the first embodiment, so a description thereof will be omitted.

The usage method is 1. The only difference is the position of the bolt head when tightening the bolt 7. Other operations are the first
There is no difference from the case of the embodiment.

In other words, it is sufficient to use whichever is more convenient depending on the situation at the site where it is to be used.

(Effects of the Invention) As described above, the retaining clamp of the present invention has a structure in which the wire groove provided in the wedge body is curved away from the wire tensioning direction line toward the jumper side outlet. Therefore, when the wire is attached to the wedge body, the jumper part of the wire will naturally curve outward, so the present invention facilitates live wire work using this type of tie clamp. At the same time, there is an effect that work efficiency can be improved.

[Brief explanation of drawings]

Fig. 1(a) is a front view showing the use state of the retaining clamp of the present invention, Fig. 1(5) is a sectional view taken along line I-1, Fig. 2(a) is a front view of the clamp body, and Fig. 2(c) is a front view of the retaining clamp of the present invention. is its right side view, Figure 3(a) is a front view of the wedge body, Figure 3(C) is its plan view, Figure 3(C) is a sectional view taken along the line ■-■ of Figure 4(a), and Figure 4. (a)
Figure (5) is a vertical cross-sectional view of the presser foot, Figure (5) is its plan view, Figure 5 (a) is a front view of the coil spring, Figure (C) is its plan view, Figure 6 is Figure 1 (5). The corresponding action explanatory diagram, Fig. 7 (
Figure 8 (a) is a front view showing the state in which the retaining clamp according to the second embodiment of the present invention is used; Q)) is the plan view, Figure (C) is the IV-IV sectional view of Figure (a), and Figure 9 (
a) is a longitudinal cross-sectional view of the presser foot, FIG. l... Covered electric wire 1a... Covering lb...
Line 2... Clamp body 2a... Main body 2b... Sliding groove 2d... Line receiver 3... Liner 4... Wedge body
4a Linear groove 4d... Presser foot holder 5... Presser foot 5b... Linear groove 6... Coil spring 7
... Bolt 8 ... Spring washer 9 ... Nine washer 10 ... Telephone pole 11 ...
Arm 12... Connecting fitting 13... Tension insulator Fig. 4 (a) (b) Fig. 3 (a) (b) (C) Fig. 5 Fig. 6 Fig. 9 (a) Section (a) ■ ■ (b) Figure 8 (C)

Claims (1)

[Claims] 1. A wedge-shaped retaining clamp in which at least a filament groove provided on the wedge body is curved toward the jumper side exit and away from the wire tensioning direction line.