JPH0242026Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a suspension clamp for ground wires used in overhead power lines.

[Conventional technology]

Conventional suspension clamps for ground wires, such as the fixed type suspension clamps for ground wires shown in Figures 7 and 8 ("Handbook of Catenary Wire Fittings for Overhead Transmission and Substations" published by Japan Malleable Casting Co., Ltd., June 1982), No. 117 (page), the ground wire is sandwiched between the ground wire guide groove 22 of the clamp body 21 and the ground wire holding groove 25 formed on the lower surface of the projection 24 at the center of the lower part of the presser foot 23 having a T-shaped cross section. 21 and presser foot 23 to the steel tower 29, a pair of left and right bolts 2
7. The ground wire 26 was clamped by tightening the connector consisting of nuts 28 alternately on the left and right sides.

[Problem that the invention attempts to solve]

However, in the conventional device, both sides of the ground wire guide groove 22 of the clamp body 21 are open in a V shape, so when the left and right connectors are tightened alternately, the presser foot 23
tilts alternately left and right. For this reason, the variation in the tightening force against the ground wire becomes large, and the ground wire 26 is partially deformed greatly due to uneven tightening. Furthermore, since the bolt insertion hole of the presser foot 23 is a blank hole, the presser foot 23 may clamp the ground wire while being deviated in the axial direction of the ground wire or in the direction perpendicular to the ground wire. It has the disadvantage of further promoting deformation.

[Means for solving problems]

In order to solve the above problems, the present invention has developed a presser foot with a ground wire holding groove formed on the lower surface of the base body and connector attachment parts protruding from both sides of the middle of the base body, and a ground wire presser foot on the upper surface of the body body. A guide groove is formed, and both side parts of both protruding parts protruding from the connector mounting part of the base body at both ends of this ground wire guide groove and the outer part of each connector mounting part that connects with the protruding part are vertically connected. A clamp body with a protruding guide protrusion that guides the
A ground wire suspension clamp consisting of a connector that is inserted into the connector attachment part and has a ground wire holding groove facing the ground wire guide groove and is removably attached to the clamp body is attached to the top of the tower directly or through a bearing body. It is installed.

[Effect]

The invention works as follows. The presser foot clamps the ground wire because both outer sides of the connector attachment part on both sides of the middle and both sides of both protruding parts of the base body that protrude from the connector attachment part are guided vertically by guide protrusions on the clamp body. As you alternately tighten the left and right connectors, the presser foot will be pushed in without tilting or moving in the front, back, left, or right directions, and the ground wire on the ground wire guide groove in the main body will be pushed into the presser foot. Press down evenly with the ground wire holding groove.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a side view of this embodiment, the second figure is a plan view of the same, and the third figure is a side view of this embodiment.
The figure is a cross-sectional view taken along the line A--A in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line B--B in FIG. 1 is a clamp body having a ground line guide groove 3 formed in the center of the upper surface of the main body part 2, and guide protrusions 4, 4, 4, 4 protruding from the four corners of this guide groove for guiding a presser foot in the vertical direction; 5
is a presser foot, which has a ground wire presser groove 7 formed on the lower surface of the base portion 6, and two connector attachment portions 8, 8 protrudingly provided at appropriate intervals on both sides of the center portion of the base portion 6. 5, four bolts 1 inserted into each connector mounting part 8, the clamp body 1 and the top part 11 of the steel tower.
The presser foot 5 is removably attached to the clamp body 1 and the top part 11 of the steel tower by four sets of connectors consisting of the connectors 2 and nuts 13 attached thereto. Both sides of the protruding portion are provided with guide protrusions 4, 4, 4, of the clamp body 1.
4, and the outer portion 9 connected to the protruding portion of each connector mounting portion 8 is guided in the vertical direction by the inner end surface 10 of the guide projection 4.

In this embodiment, when clamping the ground wire 14 between the ground wire guide groove 3 and the ground wire holding groove 7 by tightening the four sets of connectors of the presser foot 5 alternately on the left and right sides, the presser foot Both side parts of the base part 6 of the gold 5 and the outer part 9 of the connector mounting part 8, 8, 8, 8 connected thereto,
9, 9, 9 are guide protrusions 4, 4, 9 of the clamp body 1,
4, 4, the presser foot 5 is pushed in and uniformly presses the ground wire 14 without tilting or moving in the front, back, left, or right directions.

Another embodiment shown in FIGS. 5 and 6 is
The structure is the same as the embodiment shown in FIG. 1, except that the presser foot 5 is attached to the clamp body 1 by a pair of left and right connectors, and the same effects as the embodiment shown in FIG. 1 can be obtained.

[Effect of idea]

As is clear from the above explanation, according to the present invention, the presser foot is guided in the vertical direction by the guide protrusion of the clamp body and does not tilt or shift in the front, back, left and right directions, so it is possible to press the ground line uniformly. It can be accurately clamped without any lopsided deformation.
Therefore, it is necessary to avoid distorted deformation of the ground line.
For example, it is suitable for clamping ground wires containing optical fibers, and since there is no need to pay attention to the inclination of the presser foot or movement in the front, back, left, and right directions, clamping operations can be performed easily. There is a practical benefit in that the work can be done easily.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view taken along the line A-A in Fig. 1, and Fig. 4 is a sectional view taken along the line B-B in Fig. 1. figure,
Fig. 5 is a side view showing another embodiment of the present invention, Fig. 6 is a plan view of the same, Fig. 7 is a side view of the conventional device, and Fig. 8 is a sectional view taken along the line CC in Fig. 7. be. DESCRIPTION OF SYMBOLS 1... Clamp body, 2... Main body part, 3... Ground wire guide groove, 4... Guide projection, 5... Presser foot, 6...
...Base part, 7... Ground wire holding groove, 8... Connector mounting part, 9... Outer part, 12, 13... Connector.

Claims (1)

[Scope of utility model registration request] A presser foot 5 has a ground wire holding groove 7 formed on the lower surface of the base portion 6 and connector mounting portions 8, 8 protruding from both middle sides of the base portion 6, and a ground wire guide groove 3 is formed on the upper surface of the main body portion 2. At the same time, on both sides of this ground wire guide groove 3, both side parts of both protruding parts projecting from the connector mounting parts 8, 8 of the base part 6, and outer parts 9 of each connector mounting part 8 that connect with the protruding parts. a clamp main body 1 having protruding guide protrusions 4, 4, 4, 4 for guiding the wire in the vertical direction; and a presser foot inserted into the connector mounting portions 8, 8 so that the ground wire holding groove 7 faces the ground wire guide groove 3. a connector 12 for removably attaching the metal 5 to the clamp body 1;
Suspension clamp for ground wire consisting of 12, 13, 13.