Direct-current circuit breaker cabinet with high safety

A DC circuit breaker, safety performance technology, applied in the direction of circuits, pull-out switch cabinets, switchgear, etc., can solve the problems of fixing, not being able to work on the screw rod at the same time, and the screw rod cannot work, so as to prevent damage and improve the convenience of operation Sexuality and easy operation

CN109301744AInactive Publication Date: 2019-02-01ANHUI ZHONGDIAN XINGFA & XINLONG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-02-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a direct-current circuit breaker cabinet with the high safety. With a handcart-carried circuit breaker, a sliding plate is driven by a lead screw to carry out micro adjustment on the circuit breaker, so that the circuit breaker is connected to a direct-current switch cabinet. Moreover, the lead screw is blocked by a linkage rod and a stopping plate. When a lock pin is locked, the linkage rod drives the stopping plate to move and, together with a protrusion arranged at the circuit breaker, carries out limiting. The lower end of the stopping plate is arranged in a slot ofthe lead screw and the stopping plate can not return if the lock pin is not turned on, so that the lead screw can not work; and the handcart and the circuit breaker are locked by mechanical linkage, so that the safety of the direct-current switch cabinet is improved and a problem that the lead screw can not be fixed simultaneously when the common handcart is locked is solved.
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Description

technical field

[0001] The invention relates to the field of DC switch cabinets, in particular to a DC circuit breaker cabinet with high safety performance. Background technique

[0002] At present, my country's urban rail transit system is powered by DC system. However, most of its DC power supplies are provided by high-power silicon rectifier devices. Due to the low overload capacity of silicon rectifier device components, the requirements for DC power grid protection components are higher. Quickly analyze the important components in the rail transit of the DC special circuit breaker. At present, when the DC switchgear is used, the handcart is used to carry the circuit breaker in order to open and close the circuit breaker. Since the circuit breaker is moved by the handcart, there are strict requirements for the locking function of the handcart and the screw rod. Ensure that the circuit breaker cannot come out when the DC switchgear is working, otherwise it is easy to ca...

Examples

Embodiment Construction

[0026] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0027] Such as Figure 1-9As shown, this embodiment provides a DC circuit breaker cabinet with high safety performance, including a circuit breaker cabinet part and a handcart part. The circuit breaker cabinet part includes a cabinet body 1, and the front part of the cabinet body 1 is a circuit breaker hand truck The compartment 2, the front of the circuit breaker handcart compartment 2 is provided with a compartment door 3, the upper part of the circuit breaker handcart compartment 2 is provided with an instrument compartment 4, and the inner bottom of the circuit breaker handcart compartment 2 is provided with a guide rail 5; the handcart part Including the handcart 6 and the circuit br...