CN201656334U - Clamp - Google Patents

Abstract

The embodiment of the utility model provides a clamp, which aims to solve the problem that a first insulator plate on a lead side of an insulator string has only one insulator plate adjacent to the first insulator plate so as to cause absence of fixing points on a front clamping piece or a rear clamping piece of an existing clamp and incapability of replacing the first insulator plate on the lead side of the insulator string. The clamp includes a closed clamping end, a labor-saving screw rod and a hardware clamping end, wherein the closed clamping end and the hardware clamping end are connected through the labor-saving screw rod, a mounting for fixedly connecting hardware is arranged at the hardware clamping end, and the closed clamping end is used for being fixedly connected with an iron cap of an insulator. Therefore, though the first insulator plate on the lead side of an insulator string has only one insulator plate adjacent to the first insulator plate, the clamp can utilize the hardware clamping end to be fixed with a piece of connecting hardware, the problem of absence of fixing points at the hardware clamping end can be avoided, and further replacement of the first insulator plate on the lead side of the insulator string can be realized.

Description

a fixture

technical field

The utility model relates to the technical field of electric equipment overhaul and maintenance, in particular to a fixture.

Background technique

In power systems, insulator strings are mainly composed of multiple pieces of porcelain or glass insulators. Porcelain or glass insulators are prone to deterioration and damage, especially in the insulator strings of tension towers. Due to the large number of insulators and long-term stress operation, the deterioration phenomenon is serious. Therefore, the deteriorated insulators should be replaced in time. The insulators should be replaced with good insulators in time.

A common method of replacing insulators is with clamps. Commonly used clamps are generally closed clamps including front clamps, rear clamps and labor-saving screw rods. When replacing the tension insulator, the front clamp and the rear clamp of the closed fixture are respectively fixedly connected with the iron caps of the two insulators adjacent to the insulator to be replaced, and the force of the insulator to be replaced is replaced by tightening the labor-saving screw rod. The insulator that needs to be replaced is loosened, so that the insulator that needs to be replaced can be removed and replaced with a new insulator. After replacing the new insulator, loosen the labor-saving screw rod of the closed fixture to force the new insulator, and the insulator string will return to its original position.

Through the research on the prior art, the inventor found that: since the front clamp and the rear clamp of the existing closed fixture need to be respectively fixed on the iron caps of the two insulators adjacent to the insulator to be replaced, and the insulator string The first piece of insulator on the side has only one adjacent insulator, which makes the front clamp or rear clamp of the closed fixture have no fixed point, so that the first piece of insulator on the side of the insulator string wire cannot be replaced.

Utility model content

In order to solve the above-mentioned technical problems, the embodiment of the utility model provides a clamp to solve the problem that the front clamp or the rear clamp of the existing clamp does not exist due to the fact that the first insulator on the wire side of the insulator string has only one adjacent insulator. Fixed point, and thus the problem that the first insulator on the wire side of the insulator string cannot be replaced.

Its technical scheme is as follows:

A jig, comprising: a closed clamp end, a labor-saving screw rod and a fitting clamp end;

Wherein, the closed clamp end and the fitting clamp end are connected through the labor-saving screw rod;

The clamping end of the fitting is provided with a mounting hole for fixedly connecting the fitting;

The closed clip end is used for fixed connection with the iron cap of the insulator.

It can be seen that in the embodiment of the utility model, the closed clamping end of the fixture can be fixedly connected to the iron cap of the insulator adjacent to the insulator to be replaced, and the clamping end of the fitting can be fixedly connected to the connecting fitting connecting the insulator. Therefore, although the first piece of insulator on the wire side of the insulator string has only one adjacent insulator, the fixture according to the embodiment of the present invention can be fixed with the connecting piece by using its clamping end, so that no fixing of the clamping end will occur. Point problems, and then the replacement of the first piece of insulator on the wire side of the insulator string can be realized.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments recorded in the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1a is a schematic structural view of the jig provided by the embodiment of the present invention;

Fig. 1b is a schematic structural diagram of the clamping end of the fitting provided by the embodiment of the present invention;

Fig. 2 is a schematic diagram of the connection of various parts when the fixture provided by the embodiment of the present invention replaces the tension insulator;

Fig. 3 is another structural schematic diagram of the fixture provided by the embodiment of the present invention;

Fig. 4 is another structural schematic diagram of the clamping end of the fitting provided by the embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment. Obviously, The described embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

The closed fixture is a commonly used fixture for replacing the insulators of the insulator string. In the process of replacing the insulator, the front clamp and the rear clamp of the closed clamp must be fixed on the iron caps of the two insulators adjacent to the insulator to be replaced, so there is no way to achieve the first on both sides of the strain insulator string. Replacement of sheet insulators.

In view of this, the embodiment of the utility model provides a clamp to solve the problem that the front clamp or the rear clamp of the existing clamp has no fixed point due to the fact that the first insulator on the wire side of the insulator string has only one adjacent insulator. , and then the problem that the first insulator on the wire side of the insulator string cannot be replaced.

Figure 1a and Figure 1b show a structure of the above fixture, including: a closed clamp end 1, a labor-saving screw 2 and a fitting clamp end 3;

The closed clamp end 1 and the fitting clamp end 3 are connected through a labor-saving screw rod 2 . Wherein, the clamping end 3 of the fitting can be specifically connected with the labor-saving screw rod 2 through the connection hole 31 thereon;

The closed clamp end 1 is used for fixed connection with the iron cap of the insulator;

The fitting clamp end 3 is used for fixed connection with the connecting fitting.

The number of labor-saving screw rods 2 in the above embodiments can be one or more, preferably two.

Figure 2 shows the connection relationship of the various parts of the above fixture when the insulator is replaced:

The closed clip end 1 is fixed on the iron cap of the insulator 6 adjacent to the insulator 4 that needs to be replaced, and the fitting clip end 3 is fixed on the connecting fitting 5 adjacent to the insulator 4 that needs to be replaced. When replacing, tighten the labor-saving lead screw 2 to loosen the insulator 4, then remove the insulator 4 to replace the insulator. After the new insulator is installed, the labor-saving screw rod 2 is loosened, so that the insulator string is stressed, and the insulator string returns to its original position.

It can be seen that, in this embodiment, the closed clip end of the fixture can be fixedly connected to the iron cap of the insulator adjacent to the insulator to be replaced, and the fitting clip end can be fixedly connected to the connecting fitting connected to the insulator. Therefore, although the first piece of insulator on the wire side of the insulator string has only one adjacent insulator, the fixture of this embodiment can be fixed to the connecting fixture by using its clamping end of the fitting, so that there will be no fixed point at the clamping end of the fitting problem, and then the replacement of the first piece of insulator on the wire side of the insulator string can be realized.

In another embodiment of the present invention, referring to Fig. 3 and Fig. 4, the clamping end 3 of the fittings includes two wings 301; a U-shaped notch 302 is provided in the middle of the two wings 301, and a U-shaped notch 302 is provided on the edge of the U-shaped notch 302 for fixing and connecting the fittings. Mounting hole 32;

Wherein, the mounting hole 32 is a bolt hole, and the bolt can pass through the mounting hole 32 and the working hole on the connecting hardware to fix the clamping end 3 of the hardware and the connecting hardware. There can be one or more mounting holes 32, and multiple mounting holes can make the fixing of the clamping end 3 of the hardware and the connecting hardware more stable. During specific implementation, those skilled in the art can flexibly design according to needs, and details are not described here.

In the above embodiment, the fitting clamp end 3 is designed to have a two-wing structure, which can reduce the weight of the fitting clamp end 3, thereby facilitating the replacement of insulators and saving manufacturing costs. The method of using bolts to connect the clamping end 3 of the fittings and the labor-saving screw rod 2 can realize the separation of the clamping end of the fittings and the labor-saving screw rod 2, which facilitates the replacement and maintenance of each part of the fixture. The distance between the U-shaped notch 302 and the two ends of the clamp end of the fitting can be equal or unequal, depending on the connecting fittings used in the insulator string in actual use.

In order to further strengthen the mechanical strength of the fitting, the edge portions of the two wings of the clamping end 3 of the fitting and the edge portion of the U-shaped notch can be thickened.

The above is only the specific implementation of the present utility model. It should be noted that the connecting fittings provided in this embodiment are three-wire connecting plate fittings. In reality, the three-wire connecting plate fittings are only one of many connecting fittings. According to different connecting fittings, the mounting holes are designed in different positions on the fitting end, so this embodiment does not constitute any limitation to the utility model. Under the premise, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (6)

1. A fixture, characterized in that it includes: a closed clamp end, a labor-saving screw rod and a fitting clamp end; Wherein, the closed clamp end and the fitting clamp end are connected through the labor-saving screw rod; The clamping end of the fitting is provided with a mounting hole for fixedly connecting the fitting; The closed clip end is used for fixed connection with the iron cap of the insulator. 2. The jig according to claim 1, characterized in that, There are two labor-saving screw rods. 3. The clip according to claim 1 or 2, characterized in that, The clamping end of the fittings includes two wings; a U-shaped notch is provided in the middle of the two wings, and mounting holes are provided on the edge of the U-shaped notch for fixedly connecting and connecting the fittings; both ends of the clamping end of the fittings are respectively connected with labor-saving screw rods. 4 . The clamp according to claim 3 , wherein the distance between the U-shaped notch and the two ends of the clamping end of the fitting is not equal. 5 . The clip according to claim 3 , wherein the mounting hole is fixedly connected to the connecting hardware through bolts. 6 . 6. The clamp according to claim 3, characterized in that there are multiple mounting holes.

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