Breaker switching-off locking device
A technology of locking devices and circuit breakers, which is applied in the direction of emergency protection devices, circuits, and parts of protective switches, can solve problems such as inconvenient operation and poor safety, and achieve the effect of easy operation and simplified operation process
Active Publication Date: 2017-12-08
WUXI XINHONGTAI ELECTRIC TECH CO LTD
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Problems solved by technology
[0006] The object of the present invention is to provide a circuit breaker opening and locking device, which has the characteristics of easy operation and high safety, so as to solve the problems of inconvenient operation and poor safety existing in the circuit breaker opening and locking device in the prior art
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[0021] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0022] see figure 1 as shown, figure 1 It is the unlocking state diagram of the circuit breaker opening and locking device provided by the specific embodiment of the present invention.
[0023] In this embodiment, a circuit breaker opening and locking device includes a box body 1, an upper key lock 2, a lower key lock 3 and a pressing plate assembly, the box body 1 is installed on the mechanism cover 4, and the upper key lock 2 and the lower key lock 3 are installed in the box body 1 along the height direction, and the two key locks are provided with an eccentric plate 5, and the pressing plate assembly includes an upper pressing plate 6, a lower pressing plate 7 and a trigger lever 8 of an integral structure, The upper pressing plate 6 and the lower pressing plate 7 are arranged in parallel and a...
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The invention discloses a breaker switching-off locking device, including a box body, an upper key lock, a lower key lock and a pressing plate assembly. The box body is mounted on a mechanism cover plate, the upper key lock and the lower key lock are mounted in the box body along a height direction, the two key locks are provided with eccentric plates, the pressing plate assembly can be arranged in the box body in a vertically movable mode, the pressing plate assembly includes an upper pressing plate, a lower pressing plate and a triggering rod of an integral structure, the upper pressing plate is located under the upper key lock, the lower pressing plate is located under the lower key lock, the triggering rod is arranged at the bottom of the lower pressing plate and penetrates through the mechanism cover plate, a reset elastic piece is arranged between the lower pressing plate and the bottom plate of the box body, and the triggering rod moves downwards and drives a switching-off half shaft through a lever to rotate by a certain angle to perform switching-off operation. The abovementioned breaker switching-off locking device adopts a double-key lock structure, is convenient to operate, and greatly improves safe reliability.
Description
technical field [0001] The invention relates to a circuit breaker, in particular to an opening and locking device for a circuit breaker. Background technique [0002] Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, there is generally no need to change parts after breaking the fault current. At present, it has been widely used. [0003] At present, the current opening and locking device of the circuit breaker has the following disadvantages in the specific use process: [0004] 1) The operation is inconvenient. When the circuit breaker is opened by the key lock to lock the circuit breaker, it is first necessary to press and hold the opening button on the mechanism, an...
Claims
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IPC IPC(8): H01H9/28H01H71/10
CPCH01H9/28H01H71/1054
Inventor 冯琪赵敏海高伟
Owner WUXI XINHONGTAI ELECTRIC TECH CO LTD