CN103500961B - A special tool for live replacement of tension insulator strings - Google Patents

Abstract

The invention discloses a special tool for replacing a strain insulator string in a charged manner, which comprises two insulating ropes arranged in parallel, wherein the front end and the rear end of each insulating rope are respectively connected with a front clamp and a rear clamp, the left end and the right end of each front clamp are connected with the front end of each insulating rope through linear anti-torsion lead screws, the left end and the right end of each rear clamp are connected with the rear end of each insulating rope, a middle clamp is arranged between the two insulating ropes in front of the rear clamp, the left end and the right end of each middle clamp are respectively provided with a tightening lead screw to be connected with the rear clamp, the rear side of each front clamp is connected with a strain insulator through a connecting plate, and the front side of each. The invention realizes the tension transfer of the lead by taking the front clamp, the middle clamp and the rear clamp as main bodies and matching with a high-strength insulating rope and a front tightening screw rod, so that the insulator string is loosened, and the purposes of replacing insulators, adjusting sag and processing the defects of the lead are achieved.

Description

A special tool for live replacement of tension insulator strings

technical field

The invention relates to a special tool for replacing strain insulator strings.

Background technique

For the conventional method of replacing strain string insulator strings on 500kV lines, the wires are first tightened with mechanical screw rods or hydraulically tightened hard insulating rods, and then the insulator strings are lifted by insulating bottle racks or hanging bottle hooks to make the insulator strings look like Relaxed state, and then break away from the metal connection between the insulator string and the wire, to achieve the purpose of replacing insulators, adjusting sag, and dealing with wire defects.

But there is following defective in prior art:

1. The hard insulating poles and bottle holders are bulky and heavy, and their carrying and transportation are limited. It is very difficult and labor-intensive for live workers to operate at heights on the tower.

2. The degree is fixed, and the versatility is poor, so it is necessary to manufacture tools and utensils with various specifications.

Contents of the invention

The technical problem to be solved by the present invention is to provide a special tool for live replacement of tension insulator strings, which is convenient to use and has good versatility.

In order to solve the above technical problems, the present invention adopts the following technical solution: a special tool for live replacement of tension insulator strings, including two insulating ropes arranged in parallel, the front and rear ends of the insulating ropes are respectively connected to the front card and the rear card, the The left and right ends of the front card are connected to the front end of the insulating rope through a linear anti-twist screw, the left and right ends of the rear card are connected to the rear end of the insulating rope, and a middle card is arranged in front of the rear card between the two insulating ropes. The left and right ends are respectively provided with a tightening lead screw to connect with the rear card, the rear side of the front card is connected with the tension insulator through the connecting plate, and the front side of the rear card is connected with the tension insulator through the connecting plate.

Preferably, the front card is connected by two front card members symmetrically arranged left and right through bolts, the front card member includes a bottom plate, a support rib is provided in the middle above the bottom plate, and a connecting cylinder is provided at the top of the support rib. The bottom plate, the support ribs and the connecting cylinder are connected by a rib plate, the bottom of the bottom plate is provided with a groove, and the bottom plate is provided with bolt holes on both sides of the groove.

Preferably, the middle card includes a circular arc plate-shaped middle card body, an I-shaped boss is provided in the middle of the upper plane of the middle card body, and a U-shaped card slot is provided in the middle of the rear end of the middle card body to cooperate with the connecting plate. For installation, the two sides of the U-shaped slot are provided with connecting holes for connecting plates.

Preferably, tightening screw mounting holes are provided at the left and right ends of the main body of the middle card to connect with the tightening screw, and the U-shaped slot extends to the bottom of the I-shaped boss.

Preferably, the rear card includes a rear card body with an arched plate structure, a support plate is provided below the rear card body, insulating rope connection holes are provided on the left and right sides of the rear card body, and the left and right sides of the support plate are A tightening screw hole is provided on the side for the tightening screw to pass through, and a connecting plate groove through which the front and rear are connected is arranged in the middle part of the lower part of the rear card main body.

Preferably, the rear end of the insulating rope is connected to the rear card through an aluminum joint.

Preferably, nylon rollers are provided on the upper plane of the rear card, and a roller bracket is provided above the main body of the rear card.

The present invention uses three types of fixtures as the main body, the front clamp, the middle clamp and the rear clamp, together with a high-strength insulating rope and a front tightening lead screw, so as to realize the transfer of the tension of the wire, loosen the string of insulators, and achieve the replacement of insulators and the adjustment of sag , The purpose of dealing with wire defects. Its advantages are:

1. This set of tools has strong versatility and can be combined arbitrarily to meet the needs of different strain insulator structures.

2. The operation method of this set of tools is simple, light and flexible, which greatly reduces the workload of live working personnel on the tower.

3. This set of tools adopts "rope-like" working tools, and uses high-strength insulating ropes instead of tight-wire insulating pull rods.

4. This set of tools has greatly improved the operating efficiency, further clarified the workflow, operation methods and pre-control measures of dangerous points of various typical live operations on live lines, and optimized some live operation methods and methods.

5. This set of tools has also improved the level of ultra-high voltage live work, further improved the management system of live work tools for 500kV lines, made contributions to the further development of live work on transmission lines, and improved research on live work methods, greatly improving the power grid. level of safe and economical operation.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is a structural representation of the present invention;

Figure 2 is a schematic diagram of the cooperation structure between the connecting plate and the insulator;

Fig. 3 is a structural schematic diagram of the front card member;

Fig. 4 is a structural schematic diagram of the middle card;

FIG. 5 is a schematic structural diagram of the rear card.

Detailed ways

Figures 1 to 5 show the specific structure of the special tool for live replacement of tension insulator strings according to the present invention, which includes two insulating ropes 4 arranged in parallel, and the front and rear ends of the insulating ropes 4 are respectively connected to the front card 1 and the rear card 3 , the left and right ends of the front card 1 are connected to the front end of the insulating rope through the linear anti-twist screw 10, the left and right ends of the rear card 3 are connected to the rear end of the insulating rope 4, and the two insulating ropes are arranged in front of the rear card. The middle card 2, the left and right ends of the middle card 2 are respectively provided with a tightening lead screw 29 to connect with the rear card, the rear side of the front card 1 is connected to the tension insulator 6 through the connecting plate 5, and the front card 3 front The side is connected to the tension insulator 6 through the connecting plate 5, so that the tension insulator 6 at both ends of the tension insulator string is connected with the special tool for live replacement of the tension insulator string.

The front card 1 is connected by two front card members symmetrically arranged left and right through bolts, the front card member includes a bottom plate 11, a support rib 12 is provided in the middle above the bottom plate, and a connecting cylinder 13 is provided on the top of the support rib , The bottom plate, the support ribs and the connecting cylinder are connected by a rib plate 14, the bottom of the bottom plate is provided with a groove 15, and the bottom plate is provided with bolt holes on both sides of the groove. The two bottom plates are butted and connected by bolts through bolt holes. The connecting cylinder 13 is for the linear anti-twist lead screw 10 to pass through.

The middle card 2 includes a circular-arc plate-shaped middle card body 20, an I-shaped boss 21 is provided in the middle of the upper plane of the middle card body, and a U-shaped card groove 23 and a connecting plate are arranged in the middle of the rear end of the middle card body. Cooperate with the installation, the two sides of the U-shaped slot are provided with connecting holes 24 of the connecting plate. The left and right ends of the main body of the middle card are provided with tightening screw mounting holes 22 to connect with the tightening screw, and the U-shaped slot extends to the bottom of the I-shaped boss 21 .

Described back card 3 comprises the back card main body 30 of arched plate structure, and described back card main body is provided with support plate support below, and described back card main body left and right sides is provided with insulating rope connecting hole 32, and described support plate left and right sides A tightening screw hole 33 for the tightening screw to pass is provided on the side, and a connecting plate groove 34 through which the front and rear are connected is provided in the middle part of the lower part of the rear card main body. The rear end of the insulating rope is connected to the rear card through an aluminum joint 40 . A nylon roller 41 is provided on the upper plane of the rear card, and a roller bracket 31 is provided above the main body of the rear card. The aluminum joint 40 can be rotated 360 degrees, so as to release the torsion force produced by the high-strength insulating rope under stress.

In addition, the sides of the front card 1 and the rear card 3 can also be connected to the side connecting plate 51 through the middle plate 50, and the side connecting plate 51 is connected to the strain insulator 6, so that the replacement of multiple strain insulators 6 can be realized. .

The invention realizes the transfer of the wire tension through the lead screw, so that the string of insulators is loosened, so that the insulators can be replaced.

Claims (1)

1. A special tool for live replacement of tension insulator strings, characterized in that it includes two insulating ropes (4) arranged in parallel, and the front and rear ends of the insulating ropes (4) are respectively connected to the front card (1) and the rear card ( 3), the left and right ends of the front card (1) are connected to the front end of the insulating rope (4) through a linear anti-twist screw (10), and the left and right ends of the rear card (3) are connected to the rear end of the insulating rope (4) , between the two insulating ropes (4), a middle card (2) is provided in front of the rear card (3), and the left and right ends of the middle card (2) are respectively provided with a tightening screw (29) to connect with the rear card , the rear side of the front card is connected to the tension insulator (6) through the connecting plate (5), the front side of the rear card is connected to the tension insulator (6) through the connecting plate (5), and the front card (1) The two front clamp members arranged symmetrically on the left and right are connected by bolts. The front clamp members include a bottom plate (11), a support rib (12) is provided in the upper middle of the bottom plate, and a connecting cylinder (13) is provided on the top of the support rib. ), a rib plate (14) is provided between the bottom plate, the support rib and the connecting cylinder to connect, the bottom of the bottom plate is provided with a groove (15), the bottom plate is provided with bolt holes on both sides of the groove, and the two bottom plates are butted The bolt connection is realized through the bolt hole, and the connecting cylinder is used for the passage of the linear anti-twist screw.