CN203536859U - Single hanging self-tightening four-hook clamp - Google Patents

Abstract

The utility model relates to an electric power operation tool, in particular to a single-hanging self-tightening four-hook clip used in the process of live inspection and maintenance of transmission lines. A single-hanging self-tightening four-hook clamp, comprising a straight line four-hook clamp and a tightening lead screw, a tightening lead screw is interspersed between two sets of hooks of the straight line four-hook clamp, one end of the tightening lead screw A handle assembly is threadedly connected, and the other end of the tightening lead screw is connected with a pull rod through a steering joint. The utility model can lift wires with different height requirements, and is suitable for replacing various insulator strings with different lengths. By fixing the pull rod on the grounding end of the monolithic tower material as a support point, and turning the handle assembly on the tightening screw to achieve the function of lifting the wire, it overcomes the difficulty when the hanging point of the DC tower insulator is a monolithic tower material. The problem of installing a tight-wire lead screw at the ground end of a monolithic tower.

Description

A single-hanging self-tightening four-hook card

technical field

The utility model relates to an electric power operation tool, in particular to a single-hanging self-tightening four-hook clip used in the process of live inspection and maintenance of transmission lines. the

Background technique

Insulator is a special insulation control, which is installed between conductors of different potentials or between conductors and potential components, withstands voltage and mechanical stress, and plays an important role in overhead transmission lines. In overhead transmission lines, the insulator is located between the tower and the conductor. The insulator has two basic functions, namely, supporting the conductor and preventing the current from returning to the ground (insulating the conductor from the tower). The insulator string is mainly composed of multiple pieces of porcelain or glass insulators. When the porcelain or glass insulators are deteriorated or damaged, the deteriorated or damaged insulators must be replaced in time. In the process of ±500KV DC live work, when it is necessary to replace the degraded insulators in the insulator string, the tool for replacing the insulators is generally used to connect the wire and the tower, and the wire between the wire and the tower The insulator string is loose, and it is convenient to replace the deteriorated insulator after the insulator string is loose. The tool for replacing the insulator is shown in Figure 1, including the tightening lead screw, the handle of the tightening lead screw, the connecting hardware set on the lower part of the tightening screw, the pull rod and the four hooks connected to the pull rod. Fix it on the tower, hook the four hooks of the four hooks on the wires on the tower, and then turn the handle of the tightening screw so that the tightening screw moves to the top of the tower through the threaded pull rod, and finally makes the The insulator string between the conductor and the tower is slack. In the past, the hanging points of tower insulators were made of double-piece tower materials, which was convenient for installing connecting fittings at the grounding end. Later, it was found that when the hanging points of DC tower insulators were made of single-piece tower materials, the connecting fittings could not find a supporting point, so that they could not be installed on the single-piece The ground end of the tower material is equipped with a tight wire lead screw. the

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings of the prior art, and provide a single-hanging self-tightening four-hook clamp, which can also lift the wire well when the hanging point of the DC pole tower insulator is a single piece of tower material, and is convenient for replacement insulator. the

In order to achieve the above object, the utility model provides the following technical solutions:

A single-hanging self-tightening four-hook clamp, comprising a straight line four-hook clamp and a tightening lead screw, a tightening lead screw is interspersed between two sets of hooks of the straight line four-hook clamp, one end of the tightening lead screw A handle assembly is threadedly connected, and the other end of the tightening lead screw is connected with a pull rod through a steering joint.

In the above-mentioned single-hanging self-tightening four-hook clip, the joints of the two sets of hook clips of the straight line four-hook clip are V-shaped. the

The utility model installs the thread tightening screw on the straight line four-hook card, and the thread tightening screw converts rotary motion into linear motion. The operator only needs to turn the handle assembly to adjust the thread tightening screw to move up and down. The length of the bar can be controlled to adjust the distance. At the same time, the door-shaped structure of the ordinary four-hook card is improved to a V-shaped structure. On the premise of ensuring the mechanical properties of the four-hook card, it is beneficial to move the rod up and down and improve the equipotential operation. Medium safe operating margin. the

Compared with the prior art, the utility model has beneficial effects: the utility model can lift wires with different height requirements, and is suitable for replacing insulator strings of various lengths. By fixing the pull rod on the grounding end of the monolithic tower material as a support point, and turning the handle assembly on the tightening screw to achieve the function of lifting the wire, it overcomes the difficulty when the hanging point of the DC tower insulator is a monolithic tower material. The problem of installing a tight-wire lead screw at the ground end of a monolithic tower.

Description of drawings

Fig. 1 is an existing single-hanging self-tightening four-hook clip. the

Fig. 2 is a structural schematic diagram of the utility model. the

Markings in the figure: 1-straight line four-hook card, 11-hook card, 2-pull rod, 3-tightening screw, 4-handle assembly, 5-steering joint, 6-conductor, 7-one-piece tower material ground terminal. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described. the

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model. the

Example 1

As shown in Figure 1, the single-hanging self-tightening four-hook clip of this embodiment includes a straight line four-hook clip 1 and a tightening screw 3, and two sets of hook clips 11 of the straight line four-hook clip 1 are interspersed with Tighten thread screw 3, one end of said tightened thread screw 3 is threadedly connected with handle assembly 4, the other end of said tightened thread screw 3 is connected with pull rod 2 through steering joint 5, and said straight line four hooks 1 The joints of the two groups of hooks 11 are V-shaped.

In this embodiment, a thread tightening screw 3 is installed on the straight line four-hook card 1, and the thread tightening screw 3 converts the rotary motion into a linear motion. The operator only needs to turn the handle assembly 4 to adjust the thread tightening screw 3 to move up and down. , the adjustment distance can be controlled according to the length of the tightening lead screw 3, and at the same time, the door-shaped structure of the ordinary four-hook card is improved to a V-shaped structure, which is conducive to pulling the rod 2 up and down on the premise of ensuring the mechanical properties of the four-hook card. Move, improve the safety operation margin in equipotential work. the

When used in live work, the pull rod 2 of this embodiment is fixed on the ground end 7 of a single tower material as a support point through a load-bearing hook, and the straight line four-hook card 1 is placed in the wire 6, and the four wire hooks Card 11 is hooked on four sub-conductors, and the handle assembly 4 on the tightening lead screw 3 is rotated to achieve the effect of lifting the wire, and finally the insulator string positioned between the conductor and the pole tower is slack. In this embodiment, the tightening lead screw 3 is arranged in the straight line four-hook card 4, and the pull rod 2 is used as the connecting piece between the tightening lead screw 3 and the grounding end 7 of the monolithic tower material, so as to overcome the problem that when the hanging point of the DC tower insulator is a single When using a single piece of tower material, it is impossible to install a tight wire lead screw on the ground end of the single piece of tower material. the

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. the

Claims (2)

1. A single-hanging self-tightening four-hook clamp, comprising a straight line four-hook clamp and a tightening lead screw, is characterized in that: a tightening lead screw is interspersed between two groups of hook clamps of the straight line four-hook clamp, and the One end of the tightening lead screw is threadedly connected with a handle assembly, and the other end of the tightening lead screw is connected with the pull bar through a steering joint. 2. The single-hanging self-tightening four-hook clip according to claim 1, characterized in that: the joints of the two sets of hook clips of the straight line four-hook clip are V-shaped.

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