CN211405407U

CN211405407U - L-shaped backup wire clamp with pretension

Info

Publication number: CN211405407U
Application number: CN201922034752.0U
Authority: CN
Inventors: 胡军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-01
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses an L-shaped backup wire clamp with pretension, which comprises a wedge-shaped wire clamp shell, wherein two sides of the wedge-shaped wire clamp shell are hinged with L-shaped or J-shaped adjusting plates; a shaft piece is arranged between the front ends of the adjusting plates; the center of the side wall of the shaft is provided with a mounting hole; the front end of the pull rod is provided with threads; the front end of the pull rod passes through the mounting hole and then adjusts the pulling force of the pull rod on the wire clamp through the fixing nut. Can ensure that pull rod and original wire are in the state that is parallel to each other through the regulating plate that sets up L or J type on the fastener, can not interfere mutually, can improve the towed stability of whole fastener device, reliability from this, play and alleviate the burden of the former strain clamp (crimping pipe) of wire, guarantee that the wire still can not fall even after wire and crimping pipe drop.

Description

L-shaped backup wire clamp with pretension

Technical Field

The utility model belongs to the technical field of the power transmission line, specifically be a L type area pretension's backup cable clamp.

Background

During the operation of a wire between tower poles of a power transmission line (generally, a power line with the voltage of more than 35 kV), the wire and a crimping pipe are loosened and fall off due to the influences of construction crimping defects, wind power, ice coating due to rain and snow, thermal cycle and the like at a tension connection part, power failure is caused, and particularly seriously, the wire falls off the ground to endanger the safety of personnel, equipment and property on the ground. This L type area pretension spare fastener can prevent effectively that the wire is not hard up to drop, even after wire and crimping pipe drop, it still can drag the wire and avoids the wire ground that drops, plays backup effect. The principle of the L-shaped back-up wire clamp with the pre-tension is that a wire clamp main body holds a wire outside an original wire pressing pipe (towards the direction of a tower pole on the other side), an L-shaped adjusting plate and related components pull the wire clamp main body together with the wire and connect the wire clamp main body and the wire onto a hanging plate of the tower pole, and once the wire falls off, the wire is immediately pulled, so that the wire is prevented from falling to the ground.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to above problem, provide a L type area pretension spare fastener, the installation that can ensure pull rod and wire through the regulating plate that sets up L or J type on the fastener is in the state that is parallel to each other, can not interfere mutually simultaneously, can improve whole fastener device's traction stability from this, alleviates the burden of former crimping pipe to ensure even wire and crimping pipe drop wire ground that also can not fall.

In order to achieve the above object, the utility model adopts the following technical scheme:

an L-shaped backup wire clamp with pretension comprises a wedge-shaped wire clamp shell, wherein two sides of the wedge-shaped wire clamp shell are hinged with L-shaped or J-shaped adjusting plates; a shaft piece is arranged between the two plates at the front end of the adjusting plate; the center of the side wall of the shaft is provided with an adjusting hole; the front end of the pull rod is provided with threads; the front end of the pull rod penetrates through the adjusting hole and then is connected with the shaft piece through an adjusting nut for adjusting the tension of the pull rod on the wire clamp body.

And a screw rod which penetrates through the adjusting plate and is connected with the nut is arranged in the center of the two ends of the shaft.

The side wall of the screw rod is provided with a pin hole for inserting a pin in the radial direction.

Bosses matched with the mounting holes in the adjusting plate are arranged in the centers of the two end heads of the shaft; and a screw is arranged on the outer side of the boss.

The side wall of the front end of the pull rod is provided with a pin hole for inserting a plug pin along the radial direction.

One side wall of the shaft is a plane; the mounting hole is arranged vertically through the plane.

Compared with the prior art, the utility model has the advantages of:

the adjusting plate of setting up L or J type through on the fastener can ensure that the installation of pull rod and wire is in the state that is parallel to each other, can not interfere each other simultaneously, can improve whole fastener device's traction stability from this, alleviates the load of former crimping pipe, ensures that the wire still can not fall after coming off with the crimping pipe. The adjusting rod can be stressed by adjusting the nut on the adjusting rod.

Drawings

FIG. 1 is a front view of the present clamp;

FIG. 2 is a top view of the present clamp;

FIG. 3 is a schematic view of the internal cross-section of a wedge-shaped wire clamp;

FIG. 4 is a schematic structural view of the present cleat during installation;

fig. 5 is a schematic 3D structure diagram of the shaft in the wire clamp.

In the figure: 1. a wedge block; 2. a wedge-shaped wire clamp housing; 3. a pull rod; 4. a shaft member; 5. fixing a nut; 7. a wire; 8. an adjusting plate; 9. hanging the plate; 10. crimping the tube; 41. an adjustment hole; 42. a boss; 43. a screw.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-5, the specific structure of the present invention is:

an L-shaped backup wire clamp with pretension comprises a wedge-shaped wire clamp shell 2, wherein two sides of the wedge-shaped wire clamp shell 2 are hinged with an L-shaped or J-shaped adjusting plate 8; a shaft element 4 is arranged between the two plates at the front end of the adjusting plate 8; the center of the side wall of the shaft element 4 is provided with an adjusting hole 41; the front end of the pull rod 3 is provided with threads; the front end of the pull rod 3 passes through the adjusting hole 41 and then connects the shaft element 4 and the pull rod 3 together through the adjusting nut 5 for adjusting the pulling force of the pull rod 3 on the clamp body.

As shown in fig. 2, in order to facilitate the assembly and disassembly, a screw 43 for passing through the adjusting plate 8 and then connecting with a nut is provided at the center of the two ends of the shaft 4.

As shown in fig. 5, in order to improve the connection stability and prevent the nut from falling off, the sidewall of the screw 43 is provided with a pin hole for inserting the pin in the radial direction.

As shown in fig. 5, in order to further improve the stress of the shaft member and ensure that the shaft member 4 is more firmly and not loosened from the tensioning frame, bosses 42 for matching with the mounting holes on the adjusting plate 8 are arranged at the centers of the two ends of the shaft member 4; a screw 43 is arranged on the outer side of the boss 42.

As shown in fig. 2, in order to prevent the pull rod 3 from being separated from the tension bracket due to the loosening of the fixing nut, the front end side wall of the pull rod 3 is provided with a pin hole for inserting the pin in the radial direction. The fixing nut is prevented from being disengaged by inserting the plug pin into the pin hole.

As shown in fig. 5, in order to make the fixing nut at the end of the pull rod 3 and the shaft 4 bear more uniformly, one side wall of the shaft 4 is a plane; the adjustment holes 41 are arranged perpendicularly through the plane.

This fastener theory of operation:

firstly, the working principle of the main body (wedge-shaped wire clamp) with the pre-tension backup wire clamp is as follows: the two wedges 1 of the wedge-shaped wire clamp a wire to enter a cavity of a shell of the wedge-shaped wire clamp, the inner diameter of the cavity is fixed and cannot be expanded, the upper wedge and the lower wedge are buckled to clamp the wire, the outer diameter of the wire is increased from small to large, the deeper the wire is dragged into the wedges 1 to enter the shell, the larger the grip of the wire clamp on the wire is, and the wire is completely held by the wire clamp; secondly, the working principle of the L-shaped backup wire clamp with the pre-tension is that a wire clamp main body is arranged in front of a crimping pipe of a strain clamp of a power transmission line, one end of a pull rod is connected with a hanging plate reserved on a tower, and the other end of the pull rod is connected with an L-shaped adjusting plate and the wire clamp main body (together with a lead), because the pull rod and the lead are changed into a relatively parallel state by the adjusting plate, the mutual interference of the pull rod and the lead is avoided, meanwhile, the wire clamp is adjusted through an adjusting nut, and a certain tension (pre-stress) is applied to the lead, and; on the other hand, once the wire becomes flexible or falls off, guarantee to hold the wire in the twinkling of an eye, prevent that the wire from dropping ground.

The bending end of the adjusting plate 8 is bent, so that the pull rod 3 and the lead 7 are arranged in parallel after being installed.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. An L-shaped backup wire clamp with pretension comprises a wedge-shaped wire clamp shell (2), and is characterized in that two sides of the wedge-shaped wire clamp shell (2) are hinged with L-shaped or J-shaped adjusting plates (8); a shaft piece (4) is arranged between the two plates at the front end of the adjusting plate (8); the center of the side wall of the shaft element (4) is provided with an adjusting hole (41); the front end of the pull rod (3) is provided with threads; the front end of the pull rod (3) penetrates through the adjusting hole (41) and then is connected with the shaft piece (4) and the pull rod (3) through an adjusting nut (5) used for adjusting the pulling force of the pull rod (3) on the wire clamp body.

2. An L-shaped spare clamp with pretension according to claim 1, characterized in that the shaft (4) is provided with a screw (43) at the center of its two ends for passing through the adjusting plate (8) and then connecting with the nut.

3. An L-shaped back-up cord clamp with pretension according to claim 2, characterized in that the side wall of the threaded rod (43) is provided with a pin hole for inserting the pin in the radial direction.

4. The L-shaped backup wire clamp with pretension according to claim 2, characterized in that the center of the two ends of the shaft (4) is provided with a boss (42) for matching with the mounting hole on the adjusting plate (8); and a screw rod (43) is arranged on the outer side of the boss (42).

5. An L-shaped back-up cord clamp with pretension as claimed in claim 1, characterized in that the front end side wall of the pull rod (3) is provided with a pin hole for inserting the plug in the radial direction.

6. An L-shaped back-up cord clamp with pretension according to claim 1, characterized in that one side wall of said shaft (4) is plane; the adjustment holes (41) are arranged perpendicularly through the plane.