Overhauling platform of breaker

Abstract

The invention relates to an overhauling platform of a breaker. The platform comprises a transportation vehicle frame, a bearing guide rail, an elevating system and a brake structure. The transportation vehicle frame has a frame-shaped structure and one side of the transportation vehicle frame is opened; and steering wheels are respectively arranged at four corners of the bottom of the transportation vehicle frame; besides, the bearing guide rail includes two fixed bases are symmetrically and fixedly connected on the top surface of the transportation vehicle frame; each of the fixed base surface is provided with a guide groove and a plurality of pulleys are arranged in each of the guide groove in a line; and one end of each of the fixed base is provided with a guide part. According to the invention, a present condition that three overhauling tools are utilized to complete transportation task is changed; an intermediate link during the operation is simplified; and resources are saved; and an objective that a breaker is taken out from a working position and is dropped at an overhauling placing position or operation in a reversed order is realized is achieved only by one overhauling tool.

Description

technical field [0001] The invention relates to an auxiliary tool for electrical equipment maintenance, in particular to a circuit breaker maintenance platform. Background technique [0002] At present, Siemens' NXAIR vacuum switchgear has been widely used in power systems. This switchgear integrates breaking, isolation, grounding and interlocking, and has perfect monitoring, control and protection functions. Therefore, it It has become an important part of the power grid. [0003] A withdrawable circuit breaker is installed in the above-mentioned switchgear. During actual operation, this circuit breaker is pushed into the switch cabinet and placed on the supporting rails stably. After tightening the circuit breaker and the switch cabinet and it works fine. This type of circuit breaker does not have a chassis mechanism similar to common VD4 or VS1 circuit breakers. Therefore, in order to realize the normal maintenance work of this type of circuit breaker, the manufacturer ...

AI Technical Summary

Problems solved by technology

[0005] 1. During the transfer process of the circuit breaker, it is necessary to use the push car for intermediate transfer, and then use the hydraulic lift car to place the circuit breaker on the ground or a storage platform at a fixed height from behind the circuit breaker; this will inevitably increase the operation steps and increase overhaul time

[0006] 2. Due to the contact between the circuit breaker and the guide rail in the cabinet, it is difficult to pull out the circuit breaker from the switch cabinet with the push trolley or the opposite operation, and the push trolley is severely worn

[0007] 3. During the transfer process, insert the push trolley to withdraw the circuit breaker or reverse the operation. Since the special guide rail of the push trolley has a certain slope and the center of gravity of the push trolley is high during the process of transferring the circuit breaker, and the push trolley is not equipped with a safety locking device, therefore, This operation has a great security risk

[0008] 4. In terms of the structure of the hydraulic lift car, the hydraulic chain drive mechanism is set on the center line. When the center of gravity of the circuit breaker deviates from the center axis, it will inevitably tilt. difficulty

[0009] 5. When the circuit breaker is removed from the hydraulic lift car with a propulsion trolley, there are relatively strict requirements for the adjustment height of the hydraulic lift car, which requires multiple adjustments, which wastes maintenance time; in addition, because the hydraulic lift car adopts hydraulic drive way, it is not convenient to make small adjustments in height

[0010] 6. Due to the cumbersome operation, if the operator is not very skilled and does not have a thorough grasp of the technical essentials, the operation efficiency will be very low; for the sake of safety, this maintenance platform is not suitable for one person to carry out maintenance operations alone

[0011] 7. When the ground level in the substation is not very high, this kind of transfer tool is very likely to cause safety accidents

[0013] 9. When the push trolley is pushed into the switchgear, the guiding effect of the guide chassis is not obvious, and the wheels of the trolley often collide with the bottom plate of the guide rail; all the wheels of the push trolley have obvious bruise marks, the surface is not smooth, and the running stability is reduced

[0014] To sum up, the above-mentioned maintenance tools of the withdrawable circuit breaker are not only too many in number, but also very inconvenient to operate, and very dangerous, requiring high physical strength and experience of the operators; in addition, the existing maintenance tools are After a period of use, the damage is obvious, so there is a great potential safety hazard

Therefore, in view of the above-mentioned overhaul tools for withdrawable circuit breakers that have many problems such as cumbersome operation, laborious work, and insufficient safety and reliability, there is an urgent need to develop a new overhaul platform with strong operability to meet the needs of reality.

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