CN217135009U - Disassembly and assembly tool for plum blossom contact of vacuum circuit breaker - Google Patents

Abstract

The utility model discloses a disassembly and assembly tool for a plum blossom contact of a vacuum circuit breaker, which comprises a handle, wherein the front end of the handle is provided with a spreading part, the handle comprises a first handle and a second handle, the first handle is hinged with the second handle, and when the handheld ends of the first handle and the second handle are close to each other, the other end is spread; the opening part is arranged at the end part of the handle far away from the handheld end and comprises a first supporting part and a second supporting part which are symmetrically arranged, the first supporting part is arranged on the first handle, and the second supporting part is arranged on the second handle; this instrument adopts articulated form, utilizes lever principle, can realize the quick assembly disassembly to the plum blossom contact, and easy operation is convenient, can satisfy the dismouting of different model contacts, can realize one-man operation again, has practiced thrift the cost of labor.

Description

Disassembly and assembly tool for plum blossom contact of vacuum circuit breaker

Technical Field

The utility model relates to a power equipment overhauls instrument technical field, concretely relates to vacuum circuit breaker plum blossom contact assembly and disassembly tools.

Background

The tulip contact is a conductive sliding connecting part which is arranged on a circuit breaker handcart, a fuse handcart and an isolating switch handcart. The plum blossom contact of the vacuum circuit breaker operates in a charged mode for a long time, the spring can generate plastic deformation, so that the tension of the spring is insufficient, the pressing force is reduced, the contact surface of a moving contact and a fixed contact is reduced, the contact resistance is increased, and the contact is heated and even burnt to cause accidents and influence the safe operation of equipment. With the increase of the operating life of the vacuum circuit breaker, the corrosion, the heating and the relaxation and deformation of the spring of the tulip contact become more serious, so the frequency of replacing the contact is increased.

The current commonly used contact disassembling methods mainly comprise the following two methods: firstly, the contact is disassembled and assembled by using traditional tools such as pliers, screwdrivers and the like; and secondly, the contact is disassembled and assembled by adopting a special disassembling and assembling auxiliary tool. In the process of disassembling and assembling the contact by means of tools such as traditional pliers, a screwdriver and the like, the clamping spring needs to be pried open by the screwdriver, the consumed time is long (about 20 minutes is needed for disassembling and assembling one contact averagely), the displacement and deformation of the plum blossom-shaped contact clamping spring, the contact finger and the conductive arm are easily caused, and the equipment is easily damaged. When the spring is installed, if the spring is not firmly grabbed, the spring is easy to bounce and hurt workers. If the handcart with the deformed contact is recovered to operate, serious consequences of explosion of the handcart of the circuit breaker can be caused under the long-term high-current high-temperature and the vicious circle with increased contact resistance. The current special tool is only used for dismounting the contact of a specific model and has no universality.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the inventor provides the dismounting tool which is simple and quick to operate and is suitable for different types of contacts.

Specifically, the utility model discloses a realize like this:

a disassembly and assembly tool for a plum blossom contact of a vacuum circuit breaker comprises a handle, wherein a spreading part is arranged at the front end of the handle, the handle comprises a first handle and a second handle, the first handle and the second handle are hinged, and when the handheld ends of the first handle and the second handle are close to each other, the other ends of the first handle and the second handle are spread;

the opening portion is arranged at the end portion, far away from the handheld end, of the handle and comprises a first supporting piece and a second supporting piece which are symmetrically arranged, the first supporting piece is arranged on the first handle, and the second supporting piece is arranged on the second handle.

Further, the first support piece and the second support piece are both arc-shaped.

Further, rubber pads are arranged on the first supporting piece and the second supporting piece.

Further, a return spring is arranged between the first handle and the second handle and is positioned on one side, close to the handle holding end, of the hinged position of the first handle and the second handle.

Further, a first limiting block is arranged on the inner side of the first handle, a second limiting block is arranged on the inner side of the second handle, and the first limiting block and the second limiting block are symmetrically arranged.

Furthermore, the first handle and the second handle are both provided with anti-skidding sleeves.

Furthermore, a groove convenient to hold is formed in the handheld position of the anti-slip sleeve.

The utility model discloses a theory of operation and beneficial effect:

(1) the application provides a vacuum circuit breaker plum blossom contact assembly and disassembly tools through the hand handle, utilizes the supporting part to make out the first spring tensile, realizes the dismouting behind the increase contact tip aperture, and this instrument adopts lever principle, and is simple convenient during the operation, can improve the speed of contact dismouting greatly.

(2) The tool can be operated by one person, and labor cost can be saved.

Drawings

Fig. 1 is a schematic structural view of a disassembly and assembly tool for a tulip contact of a vacuum circuit breaker in embodiment 1;

fig. 2 is a schematic view of a press state of the disassembly and assembly tool for a tulip contact of a vacuum circuit breaker in embodiment 1;

fig. 3 is a schematic use view of the disassembly and assembly tool for the tulip contact of the vacuum circuit breaker in embodiment 1;

fig. 4 is a schematic diagram illustrating a disassembly and assembly tool for a tulip contact of a vacuum circuit breaker in embodiment 1;

fig. 5 is a schematic diagram of the vacuum circuit breaker tulip contact disassembling tool in embodiment 1 after being disassembled.

Reference numerals:

11-a first handle; 12-a second handle; 21-a first support; 22-a second support; 23-rubber pad; 3-a return spring; 41-a first stopper; 42-a second stopper; 5-anti-slip sleeve; 51-a groove; 6-contact.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1-2, the utility model provides a vacuum circuit breaker plum blossom contact assembly and disassembly tools, including the handle, the front end of handle is equipped with struts the portion, and the handle is articulated by first handle 11 and second handle 12 and forms, and strut the portion and set up the tip of keeping away from handheld end at the handle, and when pressing the handheld end of first handle 11 and second handle 12, strut the portion and open to the contact is strutted to the utilization portion, increase contact tip aperture makes it be greater than circuit breaker conducting rod diameter, thereby realizes the dismouting. Specifically, the expanding portion includes a first support 21 and a second support 22 which are symmetrically arranged, the first support 21 is arranged on the first handle 11, and the second support 21 is arranged on the second handle 21. The first support member 21 and the second support member 22 are both arc-shaped, so that the contact fingers can be matched with the contacts, and the reliability is improved.

Further, a return spring 3 is arranged between the first handle 11 and the second handle 12, the return spring 3 is positioned on one side of the hinged position of the first handle 11 and the second handle 12 close to the handle holding end, on the premise that the return function of the first handle 11 and the second handle 12 is guaranteed, the use of materials is reduced as much as possible, and meanwhile, the pressing of the handles is facilitated. The first limiting block 41 is arranged on the inner side of the first handle 11, the second limiting block 42 is arranged on the inner side of the second handle 12, the first limiting block 41 and the second limiting block 42 are symmetrically arranged, the first limiting block 41 and the second limiting block 42 limit the approaching degree of the first handle 11 and the second handle 12, and the contact is prevented from being excessively spread by a supporting part due to excessive force, so that the damage of the contact is caused. Preferably, the first limiting block 41 and the second limiting block 42 can be fixed by screws, the screws penetrate through the first/second handle and then are fixed with the first/second limiting block, and the length of the screws entering the inner side of the handle can be adjusted by adjusting and rotating the screws, so that the distance between the first limiting block 41 and the second limiting block 42 can be adjusted, and the requirements of different contacts can be further met.

Further, the first handle 11 and the second handle 12 are both provided with the anti-slip sleeve 5, and a groove 51 convenient to hold is formed in a holding position of the anti-slip sleeve 5, so that the anti-slip handle is convenient to hold while providing an anti-slip function.

Specifically, as shown in fig. 3-5, when the contact 6 is disassembled, one end of the tool, which is provided with a support portion, is inserted into the contact, after the first support member 21 and the second support member 22 contact with the contact finger, the first handle 11 and the second handle 12 are pressed (in the pressing process, the first limit block 41 and the second limit block 42 are close to each other synchronously, when reaching a certain degree, the first limit block 41 and the second limit block 42 abut against each other to avoid damaging the contact by excessive force), the first support member 21 and the second support member 22 are supported by taking the hinge point as a fulcrum, so that the contact spring is uniformly stretched, the aperture of the contact end portion is increased to be larger than the diameter of the conductive rod of the circuit breaker, then the tool is moved backwards to take down the contact, then the pressing force is gradually reduced, the first handle 11 and the second handle 12 are gradually separated under the action of the return spring 3, thereby causing the contact spring to gradually contract and facilitating removal of the contact from the tool.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims (7)

1. The disassembly and assembly tool for the plum blossom contact of the vacuum circuit breaker comprises a handle and is characterized in that a stretching part is arranged at the front end of the handle, the handle comprises a first handle (11) and a second handle (12), the first handle (11) and the second handle (12) are hinged, and when the handheld ends of the first handle (11) and the second handle (12) are close to each other, the other ends of the first handle and the second handle are stretched;

the opening portion is arranged at the end portion, far away from the handheld end, of the handle and comprises a first supporting piece (21) and a second supporting piece (22) which are symmetrically arranged, the first supporting piece (21) is arranged on the first handle (11), and the second supporting piece (22) is arranged on the second handle (12).

2. The disassembly and assembly tool for tulip contacts of vacuum circuit breakers of claim 1, wherein said first support (21) and said second support (22) are both arc-shaped.

3. The disassembly and assembly tool for tulip contacts of vacuum circuit breakers as claimed in claim 1 or 2, wherein said first support (21) and said second support (22) are provided with rubber pads (23).

4. The disassembly and assembly tool for the tulip contact of the vacuum circuit breaker as claimed in claim 1, wherein a return spring (3) is arranged between the first handle (11) and the second handle (12), and the return spring (3) is positioned at one side of the hinged position of the first handle (11) and the second handle (12) close to the handle holding end.

5. The disassembly and assembly tool for the tulip contact of the vacuum circuit breaker as claimed in claim 1, wherein a first limit block (41) is arranged on the inner side of the first handle (11), a second limit block (42) is arranged on the inner side of the second handle (12), and the first limit block (41) and the second limit block (42) are symmetrically arranged.

6. The disassembly and assembly tool for tulip contacts of vacuum circuit breakers as claimed in claim 1, wherein said first handle (11) and said second handle (12) are provided with anti-slip sleeves (5).

7. The disassembly and assembly tool for tulip contacts of vacuum circuit breakers as claimed in claim 6, wherein said anti-slip cover (5) is provided with a groove (51) at a hand-held position for easy holding.

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