JPH10126935A - Wire anchor clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lightweight wire anchor clamp having high mechanical strength which can be held easily by a worker during work. SOLUTION: The wire anchor clamp comprises a clamp body 1 having a clamp part 3 of C-shaped cross section provided with a clamp groove 5 and an anchor part 4 projecting from the base part thereof, and a wedge member 2 having a wedge part 14 being inserted into the clamp groove 5 to secure a wire with respect to the clamp part 3 and a wire gripping part 15 continuous to the end part of the wedge part 14. The clamp part 3 has C-shaped cross section provided with an opening for inserting the wire into the clamp groove 5 from one side thereof and a plurality of ribs 10 are formed around the clamp part 3 in order to enhance bending rigidity. The anchor part 4 is provided with a recess 13 is the side face in order to reduce the weight and a dismantling protrusion 25 is formed on the left side face at the wire gripping part 15 of the wedge member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wedge type clamp for retaining an electric wire to a support such as a telephone pole.

[0002]

2. Description of the Related Art As is well known, a clamp body connected to the other end of an end fitting fixed at one end to a power transmission tower or the like is used to hold an electric wire such as a power transmission and distribution line to a power transmission tower or a power pole. And a wedge-type clamp having a wedge member that is driven into the wire insertion groove of the clamp body and grips the wire between the clamp body and the clamp body. For the retention clamp,
Since a large external force acts, the clamp body and the wedge member become large and heavy.

[0003]

However, since the work of holding the electric wire is performed on a high place with a poor footing, the clamp body and the wedge member which are large and heavy require labor for the worker. It becomes inconvenient to handle, the workability is poor and difficult, and the danger of accidentally removing the clamp body and the wedge member increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wire clamping clamp having high mechanical strength, light weight, easy holding by an operator, and excellent workability in view of the current situation of the conventional wire clamping clamp as described above. There is to get.

[0005]

SUMMARY OF THE INVENTION To achieve this object, the present invention provides a clamp body having a C-shaped cross-section having a clamp groove formed therein, and an anchoring portion projecting from a base of the clamp portion. A wedge part inserted into the clamp groove and gripping an electric wire between the clamp part and a wedge member having a continuous electric wire grip part at an end of the wedge part; Is formed into a C-shaped cross section having an opening through which an electric wire can be inserted into the clamp groove from one side thereof, and a plurality of reinforcing ribs for reinforcing bending rigidity are formed so as to surround an outer periphery of the clamp portion. The retaining portion is reduced in weight by forming a concave portion on a side surface, and an electric wire retaining clamp in which a redistribution protrusion is formed on a left side surface of the electric wire gripping portion of the wedge member. It is intended to propose.

In the following description of a preferred embodiment of the present invention, the wire gripping portion includes a fixed portion integrated with the wedge portion and a movable portion rotatably attached to the fixed portion with a pin. A description will be given of an electric wire retaining clamp in which the re-disassembly protrusion is formed on the fixing portion.

In the following description of a preferred embodiment of the present invention, there is exemplified an electric wire retaining clamp in which a hammer head for driving the wedge member with a hammer is formed on an end face of the fixing portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an electric wire anchoring clamp according to the present invention comprises a clamp body 1 and a wedge member 2. As shown in FIG.
-Shaped clamp 3 and anchor 4 protruding from its base
And That is, a clamp groove 5 whose tip is curved upward is formed in the clamp portion 3, and an opening 6 through which an electric wire can be inserted into the groove 5 from one side is formed on one side. The bottom surface 5a of the clamp groove 5 is flat so as to be able to contact the flat lower surface 2a of the wedge member 2, and as can be understood from FIG. It has a semicircular shape corresponding to the outer diameter of the inserted core wire.

On the outer periphery of the clamp portion 3, four reinforcing ribs 1 are provided.
0 are integrally formed, and by forming these reinforcing ribs 10, the overall bending rigidity of the clamp portion 3 is enhanced, and the flexural rigidity is high and the overall weight is reduced for the thickness of the clamp portion 3.

The anchoring portion 4 of the clamp body 1 is connected to an insulator or the like. As shown in FIG. 2, an anchoring pin 11 is inserted into the anchoring portion 4 formed in a bifurcated shape. The cotter pin 12 is inserted into the projecting portion to prevent the retaining pin 11 from coming out of the retaining portion 4.
Is reduced in weight by the concave portion 13 on the side surface, the material for casting is saved, and "burn" can be prevented.

On the other hand, the wedge member 2 has a wedge portion 14.
The wedge portion 14 has a flat and inclined lower surface 2a and an arc upper surface 2b corresponding to the outer diameter of the above-described stranded conductor of the electric wire. The wedge portion 14 can be inserted into the clamp groove 5 along the bottom surface 5a and the inner walls 5c and 5d of the clamp groove 5.

The electric wire gripping portion 15 of the wedge member 2 has a fixing portion 16 integrated with the wedge portion 14 and, as shown in FIG.
The lower part is constituted by a movable part 18 rotatably attached to a fixed part 16 by a fulcrum pin 17. In addition, a base of the fastening screw 20 is provided on the upper part of the movable part 18 by a pivot pin 21.
The tip is engaged in the upper fork 16a of the fixing portion 16, and the C-shaped gripping portions 23a and 23b can be fastened to the electric wire by turning the fixing nut 22.

Further, a hammer head 24 which can act as a hammer is formed on the end face of the fixing portion 16 described above, and the other portions are thin and light in weight. On the left side surface of the wedge member 2, a re-disassembly protrusion 25 used for re-disassembling the wire retaining clamp is integrally formed. The re-disassembly protrusion 25 projects sideways. It is in a state of having done. In other words, when reassembling the installed wire retaining clamp, the clamp body 1 can be disassembled from the wedge member 2 by hitting the left end face of the reassembly protrusion 25 in FIG. 1 with a hammer.

To hold the electric wire W using the electric wire holding clamp according to the illustrated embodiment, the holding portion 4 of the clamp body 1 is connected to an insulator or the like, and the electric wire W is opened as shown in FIG. 6 is inserted into the clamp groove 5. next,
The nut 22 is loosened, and the screw 20 is rotated clockwise in FIG.
, And the movable portion 18 may be opened by rotating the movable portion 18 clockwise about the fulcrum pin 17 as well. That is, the electric wire W
Is inserted between the gripping portions 23a and 23b, the movable portion 18 is returned to the original position, the nut 22 is lightly tightened to prevent the wedge member 2 from dropping, and then the upper surface of the right thumb is locked by the hammer head 25. , Holding the wedge member 2, inserting the tip of the wedge portion 14 between the lower side of the electric wire W and the bottom surface 5 a of the groove 5, hitting the hammer head 24 with a hammer, and driving the wedge member 2 into a clamp. If the main body 1 is fixed to the electric wire W and the nut 22 is tightened to fix the electric wire W to the wedge member 2, the retaining operation can be completed.

Reference numeral "26" in FIGS. 1 and 4 denotes an attachment hole for an overhead wire. The overhead wire can be connected to the attachment hole 26 to perform an overhead wire operation.

[0016]

As described above, the electric wire anchoring clamp of the present invention has a structure as described above, so that the clamp body is reduced in weight while maintaining the overall mechanical strength by the reinforcing ribs, and a concave portion is formed in the clamp body. As a result, the overall weight is reduced, a cast without "squeezing" is obtained, and the weight of the clamp body is greatly reduced, so that workability in aerial riding with poor scaffolding is improved. In addition, since the hammer head and the re-disassembling protrusion that can be gripped by the operator's hand are provided on the side surface of the wedge member of the electric wire anchoring clamp of the present invention, the wedge member is driven into The work of removing the member from the clamp body again can be facilitated, and the safety and workability at the work site are improved.

[Brief description of the drawings]

FIG. 1 is a side view of a retention clamp according to the present invention.

FIG. 2 is a diagram of FIG. 1 as viewed obliquely from the upper right.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 is a side view of the clamp body.

FIG. 5 is a side view of the wedge member.

[Explanation of symbols]

 Reference Signs List 1 clamp body 2 wedge member 2a lower surface 2b upper surface 3 clamp portion 4 retaining portion 5 clamp groove 5a bottom surface 5b upper surface 5c, 5d inner wall 6 opening 10 reinforcing rib 11 retaining pin 12 cotter pin 13 concave portion 14 wedge portion 15 wire gripping portion 16 fixing portion 16a Upper bifurcation 17 Support pin 18 Movable part 20 Clamping pin 21 Pivot pin 22 Nut 23a, 23b C-shaped gripping part 24 Hammer head 25 Projection part for re-disassembly W Twisted wire conductor

Claims (3)

[Claims] A clamp body having a C-shaped cross-section having a clamp groove formed therein and a retaining portion protruding from a base of the clamp portion, and the clamp body being inserted into the clamp groove and being connected to the clamp portion An electric wire holding clamp having a wedge portion for gripping an electric wire and a wedge member having a continuous electric wire gripping portion at an end of the wedge portion, wherein the clamp portion has an opening through which an electric wire can be inserted into the clamp groove from one side thereof. Is formed in a C-shaped cross section, and a plurality of reinforcing ribs for reinforcing bending rigidity are formed so as to surround the outer periphery of the clamp portion, and the retaining portion is reduced in weight by forming a concave portion on a side surface, An electric wire retaining clamp, wherein a wedge member has a re-disassembly protrusion formed on a left side surface of the electric wire gripping portion. 2. The electric wire gripping part includes a fixed part integrated with the wedge part, and a movable part rotatably attached to the fixed part by a pin. The re-disassembly protruding part is attached to the fixed part. An electric wire anchoring clamp according to claim 1, characterized in that it is formed. 3. An electric wire anchoring clamp according to claim 2, wherein a hammer head for driving said wedge member with a hammer is formed on an end surface of said fixing portion.