CN205159908U - A kind of back-up protection wire clamp - Google Patents

Abstract

The utility model relates to a backup protection fixing -line device, including mainboard 1, win 2 in succession, single arm -drag 3 keeps silent 4 on, keep silent 5 down, the 9, the 5th round pin axle 10 on first round pin axle 6, second round pin axle 7, third round pin axle 8, the fourth round pin axle, insulator spindle link up with 11, pull rod 13, spring pin 14, spring pull ring 15, the spring pin sets up on the mainboard, the spring pin is not when receiving external force, and the one end of spring pin stretches into in the circular arc leads to groove 12, the terminal of spring pin is connected with the spring pull ring, the spring pull ring is used for pulling out the circular arc with the spring pin and leads to the groove. The utility model discloses set up insulating bar couple, spring pin and spring pull ring spare, can effectively protect and operate potential safety hazards such as transmission pressure tension releasing that the reason causes and slippage by multiplexer utensil or personnel, guaranteed the electrified smooth implementation of changing transmission line dead end insulator work, reduced fortune dimension intensity of labour, improved live overhaul efficiency, the operation of guarantee electric power system safe and reliable.

Description

A kind of back-up protection wire clamp

technical field

The utility model belongs to the technical field of live working tools for electric power maintenance, and in particular relates to a back-up protection clamping device for live replacement of tension insulators of transmission lines for ground potential.

Background technique

Most of the tension towers of 220kV and above high-voltage transmission lines adopt the type of tension insulator strings, and dirty and damaged insulators need to be maintained and replaced during operation. In order to further meet the power supply reliability requirements of the backbone network, the State Grid Corporation of China actively implements the state-of-the-art maintenance strategy to effectively improve the availability of line equipment. It is necessary to use live work as much as possible in the maintenance of high-voltage transmission lines. At present, domestic live replacement of tension insulator strings of transmission lines mainly adopts the auxiliary replacement method of bottle racks, without backup protection. When using the auxiliary method of bottle racks to replace strain insulator strings of transmission lines, it is easy to cause loosening due to tools or personnel operations. Potential safety hazards such as wire and wire slippage have brought great safety risks to the power grid. Therefore, the development of a backup protection tensioner is an urgent problem to be solved in the maintenance work of live replacement of tension insulator strings on high-voltage transmission lines.

Utility model content

In view of this, the purpose of this utility model is to provide a backup protection clamp for ground potential replacement of tension insulators of transmission lines

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

A kind of back-up protective wire gripping device, comprising a main board 1, a pulley 2, a pull arm 3, an upper jaw 4, a lower jaw 5, a first pin shaft 6, a second pin shaft 7, a third pin shaft 8, a fourth pin shaft Pin shaft 9, the fifth pin shaft 10, insulating rod hook 11, pull rod 13, spring retaining rod 14, spring pull ring 15, the lower part of the main board is provided with a lower jaw, one end of the lower jaw and one end of the connecting lever It is hinged on the main board through the first pin shaft; the other end of the connecting lever is hinged with one end of the pull arm through the second pin shaft, and the insulating rod hook is arranged at the hinge of the second pin shaft and the pull arm; the main board There is an arc-shaped slot on the top, the left end of the upper jaw is hinged to the connecting plate through the third pin, and the other end of the upper jaw is slidably engaged in the arc slot through the fourth pin. The end of the main board away from the first pin shaft is provided with a transverse through slot, the other end of the pull arm is slidably engaged in the transverse through slot through the fifth pin shaft, the spring stopper is arranged on the main board, When the spring stopper is not subject to external force, one end of the spring stopper extends into the circular arc through groove 12, and the end of the spring stopper is connected with the spring pull ring, and the spring pullback is used to hold the spring stopper Pull out the arc slot.

The beneficial effects of the utility model are:

The utility model is combined with the existing power outage operation to replace the tension insulator backup protection clamp device of the transmission line, improves it, and sets the insulating operating rod hook part, the spring stopper rod and the spring pull ring part, which can effectively protect the tool or Potential safety hazards such as loose wires and slippage of transmission wires caused by personnel operations, ensure the smooth implementation of live replacement of tension insulators on transmission lines, reduce labor intensity of operation and maintenance, improve live maintenance efficiency, and ensure safe and reliable operation of power systems.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic diagram of the structure of the utility model;

Fig. 2 is the position diagram of the spring stop lever when the utility model is in use; wherein (a) shows that the upper and lower jaws of the wire gripper are opened to the maximum position, the pin shaft 9 is located at the upper right position of the circular arc slot of the main board, and the spring stop The rod is in a free and loose state, and the spring stopper blocks the pin shaft; (b) indicates that the power transmission wire passes through the upper and lower jaws of the wire clamp, and the spring pull ring rope of the main board of the wire clamp is tightened, and the pin shaft 9 passes along the arc of the main board. Slide the groove downward until the upper and lower jaws are tightly engaged with the power transmission wire; (c) means to loosen the spring pull ring rope on the main board of the cable clamp, and the pin shaft 9 slides down to a certain position along the arc groove of the main board. Until the upper and lower jaws are tightly engaged with the transmission wire, the backup protection of the tension insulator of the transmission line is completed when it is live;

Figure 3 is a schematic diagram of the structure of the upper and lower jaws.

detailed description

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

A kind of back-up protective wire gripping device, comprising a main board 1, a pulley 2, a pull arm 3, an upper jaw 4, a lower jaw 5, a first pin shaft 6, a second pin shaft 7, a third pin shaft 8, a fourth pin shaft Pin shaft 9, the fifth pin shaft 10, insulating rod hook 11, pull rod 13, spring retaining rod 14, spring pull ring 15, the lower part of the main board is provided with a lower jaw, one end of the lower jaw and one end of the connecting lever It is hinged on the main board through the first pin shaft; the other end of the connecting lever is hinged with one end of the pull arm through the second pin shaft, and the insulating rod hook is arranged at the hinge of the second pin shaft and the pull arm; the main board There is an arc-shaped slot on the top, the left end of the upper jaw is hinged to the connecting plate through the third pin, and the other end of the upper jaw is slidably engaged in the arc slot through the fourth pin. The end of the main board away from the first pin shaft is provided with a transverse through slot, the other end of the pull arm is slidably engaged in the transverse through slot through the fifth pin shaft, the spring stopper is arranged on the main board, When the spring stopper is not subject to external force, one end of the spring stopper extends into the circular arc through groove 12, and the end of the spring stopper is connected with the spring pull ring, and the spring pullback is used to hold the spring stopper Pull out the arc slot.

In this embodiment, the spring stopper is fixed on the main board through a sleeve, and the spring stopper can perform telescopic reciprocating movement in the sleeve, but the spring stopper will not break away from the sleeve.

Fig. 2 is the position diagram of the spring stop bar when the utility model is in use; wherein (a) the upper and lower jaws of the wire clamp are opened to the maximum position, the pin shaft 9 is located at the upper right position of the circular arc slot of the main board, and the spring stop bar In the state of free relaxation, the spring stopper blocks the pin shaft; (b) the power transmission wire passes through the upper and lower jaws of the wire clamp, and the spring pull ring rope of the main board of the wire clamp is tightened, and the pin shaft 9 is directed along the arc groove of the main board. Slide down until the upper and lower jaws are tightly engaged with the power transmission wire; (c) Loosen the rope of the spring pull ring of the main board of the cable clamp, and slide the pin 9 down to a certain position along the arc groove of the main board until the upper and lower The lower jaw is tightly engaged with the transmission wire to complete the backup protection for live replacement of the tension insulator of the transmission line;

As shown in Figure 3, the upper jaw 4 and the lower jaw 5 are respectively provided with a first groove 16 and a second groove 17, wherein the second groove 17 is a semicircle with a V-shaped or strip-shaped second groove symmetrically arranged on both sides. A groove 16. Preferably, the depth of the first groove 16 and the second groove 17 is 0.5-3 cm.

When performing clamping operations, the fastening effect is better through the first groove 16 and the second groove 17 provided on the upper jaw 4 and the lower jaw 5, wherein the upper jaw 4 and the lower jaw 5 have a better fastening effect. The locking teeth are set in dislocation to achieve the purpose of fastening.

The using method of the utility model:

1. The operator on the pole fixes the two ends of the bottle holder on the cross arm and the insulator spring respectively.

2. The operator on the rod opens the upper and lower jaws of the backup protection wire clamp to the maximum position, so that the pin shaft 9 is located at the upper right position of the arc slot on the main board, the spring stopper is in a free and relaxed state, and the spring stopper Block the pin shaft 9 to ensure the opening of the upper jaw and the lower jaw of the wire clamp.

3. The operator on the pole passes through the hook 11 of the insulating rod of the wire clamp with an insulating operating rod, and sends the backup protection wire tightener to the side of the power transmission wire of the bottle holder, so that the power transmission wire passes through the upper and lower jaws of the wire clamp, Pull the spring pull ring rope on the main board of the cable clamp until the upper and lower jaws are tightly engaged with the transmission wire, and the backup protection of the tension insulator of the power transmission line is completed.

4. After the live replacement of the tension insulator of the transmission line is completed, pull the insulating rope of the pull rod, the upper and lower jaws of the wire clamp are loose, the transmission wire is loosened and separated from the upper and lower jaws of the wire clamp, and the insulation operating rod passes through the wire clamp. The insulating rod hook retracts the wire clipper.

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (1)

1. A back-up protective wire clipper, characterized in that it includes a main board (1), a connecting lever (2), a pull arm (3), an upper jaw (4), a lower jaw (5), and a first pin (6), the second pin (7), the third pin (8), the fourth pin (9), the fifth pin (10), the insulating rod hook (11), the pull rod (13), the spring retainer Rod (14), spring pull ring (15), the bottom of the main board (1) is provided with a lower jaw (5), and one end of the lower jaw (5) and one end of the connecting lever (2) pass through the first pin The shaft is hinged on the main board (1); the other end of the connecting lever (2) is hinged with one end of the pull arm (3) through the second pin shaft (7), and the insulating rod hook (11) is set on the second pin The joint between the shaft (7) and the pull arm (3); the main board (1) is provided with a circular arc slot (12), and the left end of the upper jaw (4) passes through the third pin shaft (8) and The connecting plate (2) is hinged, and the other end of the upper jaw (4) is slidably engaged in the circular arc slot (12) through the fourth pin shaft (9). One end of a pin (6) is provided with a transverse through groove, and the other end of the pull arm (3) is slidably engaged in the transverse through groove through the fifth pin (10); On the main board, when the spring retaining rod is not subjected to external force, one end of the spring retaining rod stretches into the circular arc through groove (12), and the end of the spring retaining rod is connected with the spring pull ring, and the spring pull ring is used To pull the spring stopper out of the circular arc slot.