CN107275965B

CN107275965B - Special tool for detaching intermediate joint of isolating switch

Info

Publication number: CN107275965B
Application number: CN201710628936.2A
Authority: CN
Inventors: 何满棠; 李志钿; 朱遂松; 袁志坚; 樊健斌; 陈志彬; 黄忠和; 蔡宝龙; 陈泽扬; 黄伟强; 肖放; 王金虎; 聂玉英; 刘国兵
Original assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2017-07-28
Filing date: 2017-07-28
Publication date: 2023-10-20
Anticipated expiration: 2037-07-28
Also published as: CN107275965A

Abstract

The invention discloses a special tool for dismantling an intermediate joint of an isolating switch, which comprises a base and two screws, wherein two screw positioning seats are respectively arranged on two sides of the upper surface of the base, each screw positioning seat is provided with an internal thread, the two screws are respectively in threaded connection with one screw positioning seat and are positioned on the same axis, and one ends, deviating from each other, of the two screws are respectively provided with an operating handle. When the detachable middle joint is used, the middle joint is fixed on the base, the screw rod is opposite to the main shaft of the middle joint, and the main shaft can be forced by rotating the operating handle, so that the detachable middle joint can be detached quickly and efficiently. According to the invention, the base is combined with the dismantling tool, so that the phenomenon that the middle joint is repeatedly turned over to shift parts in the gear box and knock the main shaft in the dismantling process is avoided, and the number of operators is reduced; the screw is driven to push the middle joint main shaft horizontally by rotating the operating handle, so that the labor is saved, the acting force is also fixed and reliable, and the operation safety is ensured.

Description

Special tool for detaching intermediate joint of isolating switch

Technical Field

The invention relates to the field of power system maintenance, in particular to a special tool for detaching an intermediate joint of an isolating switch.

Background

The GW16-220 isolating switch is a single-column type vertical fracture isolating switch suitable for 220kV transformer substations, and is widely applied to 220kV transformer substations in whole province or even nationwide in view of the characteristics of reliable performance, simplicity in operation and good through-flow property.

Because the isolating switch is easy to cause the problems of difficult opening and closing, small pressure of the clamping contact and the like in the long-term use process, the isolating switch is generally required to be disassembled and overhauled for 10-12 years. In the disassembly process, the isolating switch has very complex structure, so that a great deal of trouble is brought to the disassembly and overhaul work of the overhauling personnel.

The middle joint of GW16-220 type isolating switch is mainly composed of gear box, main shaft, gear box sleeve and connecting fork. The gear box has the most complex structure, and comprises a gear, a plurality of clamping springs, a gasket and other parts besides the main shaft. The main shaft is removed when the intermediate joint is removed. At present, the traditional dismantling method is to knock through an iron hammer, and the operation steps are as follows: the gear box cover is opened in the first step, the jump ring and the packing ring in the gear box are shifted in the second step, the third step is that the turning middle joint is used for beating the main shaft, the fourth step is that the position of the turning middle joint for moving the jump ring and the packing ring is reserved for a margin, the fifth step is used for continuously beating the main shaft, the steps are repeated until the main shaft is finally beaten out, and parts in the box are taken out. The procedure of intermediate joint removal typically takes up to 5 hours on site and requires at least 3 people to work, which is time consuming and labor intensive. In addition, the traditional dismantling method adopting the iron hammer striking is easy to cause equipment damage, and the risk of injuring personnel exists. The operation steps are complicated, and the operation risk is high.

Disclosure of Invention

The invention aims to overcome at least one defect in the prior art, and provides a special tool for detaching the middle joint of the isolating switch, which utilizes a puller and moment principle to push out a main shaft, so that the labor-saving effect is realized, the operation time is shortened from 5 hours to 1 hour, the number of operators is reduced from 3 operators to 1 operator, and the disassembly and overhaul efficiency of the isolating switch is greatly improved. Simultaneously, reduce the risk of equipment damage, avoid personnel to smash the risk of injury.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a specialized tool is demolishd to isolator intermediate head, includes base and two screws, base upper surface both sides respectively are equipped with a screw rod positioning seat, the screw rod positioning seat has the internal thread, two screws respectively with a screw rod positioning seat threaded connection and two screws are located same axis, two screws deviate from the one end that all is equipped with operating handle mutually.

In a preferred embodiment, the opposite ends of the two screws are tapered heads. The conical head is more beneficial to applying thrust to the main shaft of the middle joint, and simultaneously reduces the resistance when the screw rotates.

In a preferred scheme, a positioning clamp for fixing the middle joint is further arranged in the middle of the upper surface of the base.

In a preferred scheme, the positioning clamp comprises a left clamp and a right clamp, and the opposite ends of the left clamp and the right clamp are respectively provided with an L-shaped clamping groove for bearing the middle joint.

In a preferred scheme, the one end that two screw rods deviate from mutually all is equipped with the operation handle stopper, and the operation handle stopper is equipped with the through-hole, the operation handle is the shaft-like, and it passes the through-hole, the both ends of operation handle are equipped with the spacing ball that the diameter is greater than the through-hole internal diameter. The operating handle can slide in the through hole under the limit of the limit ball, so that the length of the operating handle is adjustable, and according to the moment principle, the moment l=the length r of the operating handle is multiplied by the acting force F, and when r is properly long, the acting force is greatly saved. The operating handle with adjustable length meets the working force requirements of different conditions, and the labor-saving effect is realized.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the invention discloses a special tool for dismantling an intermediate joint of an isolating switch, which comprises a base and two screws, wherein two screw positioning seats are respectively arranged on two sides of the upper surface of the base, each screw positioning seat is provided with an internal thread, the two screws are respectively in threaded connection with one screw positioning seat and are positioned on the same axis, and one ends, deviating from each other, of the two screws are respectively provided with an operating handle. When the detachable middle joint is used, the middle joint is fixed on the base, the screw rod is opposite to the main shaft of the middle joint, and the main shaft can be forced by rotating the operating handle, so that the detachable middle joint can be detached quickly and efficiently. According to the invention, the base is combined with the dismantling tool, so that the phenomenon that the middle joint is repeatedly turned over to shift parts in the gear box and knock the main shaft in the dismantling process is avoided, and the number of operators is reduced; the screw is driven to push the middle joint main shaft horizontally by rotating the operating handle, so that the labor is saved, the acting force is also fixed and reliable, and the operation safety is ensured.

Drawings

Fig. 1 is a schematic diagram of a tool for removing an intermediate joint of a disconnecting switch according to the present invention.

Wherein: 1. a base; 2. a screw; 3. a screw positioning seat; 4. an operating handle; 5. a left clamp; 6. a right clamp; 7. operating a handle limiting block; 8. and a limit ball.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;

for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;

it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, a special tool for detaching an intermediate joint of an isolating switch comprises a base 1 and two screws 2, wherein two screw positioning seats 3 are respectively arranged on two sides of the upper surface of the base 1, each screw positioning seat 3 is provided with internal threads, the two screws 2 are respectively in threaded connection with one screw positioning seat 3 and the two screws 2 are positioned on the same axis, and one ends, deviating from each screw 2, of the two screws 2 are respectively provided with an operating handle 4.

The opposite ends of the two screws 2 are conical heads. The conical head is more beneficial to applying thrust to the main shaft of the middle joint, and simultaneously reduces the resistance when the screw rod 2 rotates.

The middle part of the upper surface of the base 1 is also provided with a positioning clamp for fixing the middle joint, the positioning clamp comprises a left clamp 5 and a right clamp 6, and the opposite ends of the left clamp 5 and the right clamp 6 are respectively provided with an L-shaped clamping groove for bearing the middle joint.

The one end that two screw rods 2 deviate from mutually all is equipped with operation handle stopper 7, and operation handle stopper 7 is equipped with the through-hole, operation handle 4 is the shaft-like, and it passes the through-hole, the both ends of operation handle 4 are equipped with spacing ball 8 that the diameter is greater than the through-hole internal diameter. The operating handle 4 can slide in the through hole under the limit of the limit ball 8, so that the length of the operating handle 4 is adjustable, and according to the moment principle, the moment l=the operating handle length r×the acting force F, and when r is properly long, the acting force is greatly saved. The operating handle 4 with adjustable length meets the working force requirements of different conditions, and achieves the labor-saving effect.

The working process of the special tool for detaching the middle joint of the isolating switch is as follows:

1. the middle connector of the GW16-220 isolating switch is placed in an L-shaped clamping groove between the left clamp 5 and the right clamp 6 on the base 1 and fixed, the gear box of the GW16-220 isolating switch is enabled to face upwards, and parts in the gear box are moved.

2. The operating handle 4 on one side is rotated to drive the screw rod 2 to generate horizontal thrust so as to push out the main shaft.

3. Continued movement of gearbox components leaves sufficient margin.

4. And (4) continuously rotating the operation handle 4, repeatedly performing the steps 2 and 3, finally pushing out the main shaft, and completing the disassembly of the intermediate joint.

5. The step of reinstalling the intermediate joint is contrary to the above-described procedure, while adjusting the components in the gearbox, pushing the main shaft in.

The same or similar reference numerals correspond to the same or similar components;

the terms describing the positional relationship in the drawings are merely illustrative, and are not to be construed as limiting the present patent;

it is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. The special tool for detaching the middle joint of the isolating switch is characterized by comprising a base and two screws, wherein two screw positioning seats are respectively arranged on two sides of the upper surface of the base, each screw positioning seat is provided with an internal thread, the two screws are respectively in threaded connection with one screw positioning seat and are positioned on the same axis, and one ends, deviating from each other, of the two screws are respectively provided with an operating handle;

the opposite ends of the two screws are taper heads;

the middle part of the upper surface of the base is also provided with a positioning clamp for fixing the middle joint;

the positioning clamp comprises a left clamp and a right clamp, and L-shaped clamping grooves for bearing the middle joint are formed in the opposite ends of the left clamp and the right clamp;

the one end that two screws deviate from mutually all is equipped with the operation handle stopper, and the operation handle stopper is equipped with the through-hole, the operation handle is the shaft-like, and it passes the through-hole, the both ends of operation handle are equipped with the spacing ball that the diameter is greater than the through-hole internal diameter.