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Operating mechanism of circuit breaker and control method thereof

An operating mechanism and circuit breaker technology, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of protruding part, many parts, complex structure, etc., and achieve the effect of increasing stability, less parts and simple transmission structure

Inactive Publication Date: 2016-07-20
ZHEJIANG GEYA ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, the Chinese patent with the notification number CN204360942U discloses an operating mechanism for a circuit breaker, which includes a front plate, a middle plate and a bottom plate. An operating shaft, an energy storage shaft and an output spindle are arranged between the front plate and the bottom plate. The output spindle is provided with a first crank arm and a second crank arm, and the bottom plate and the middle plate are respectively provided with oil buffer devices corresponding to the first crank arm and the second crank arm, and the oil buffer The device includes a housing for accommodating hydraulic oil, and a buffer rod is sleeved inside the housing, and the buffer rod protrudes from the housing and slides and fits with the housing. By setting an oil buffer device, the output spindle The crank arm is used to limit the position, avoiding excessive rotation of the output spindle, prolonging the service life of the product, and the buffer rod on the oil buffer device and the casing slide to cooperate, so that when the output spindle is buffered, the output spindle can be reliably and slowly The cushioned limit is reliable, but it has the problems of large volume, complex structure and many parts
[0004] Moreover, in the traditional operating mechanism, the extension part on the operating handle covers the handles of multiple circuit breaker handles to realize linkage (such as Figure 10 As shown), in this linkage mode, because the operating mechanism is located on one side of the circuit breaker group, the driving force is applied to the operating handle to drive the circuit breaker handle to close. The stability is poor, and the extension part is prone to fall out

Method used

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  • Operating mechanism of circuit breaker and control method thereof
  • Operating mechanism of circuit breaker and control method thereof
  • Operating mechanism of circuit breaker and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: An operating mechanism of a circuit breaker, such as figure 1 As shown, it includes a housing 1 and a circuit board 2. The housing 1 is provided with a DC motor 3, a worm 41 arranged in sequence, a worm wheel 42, a transmission gear 43, a toothed turntable 44, and a rotating shaft connected to the housing 1 in rotation. Part 5, the rotating part 5 is plugged with an insertion rod 53 for penetrating through the handle of the circuit breaker 7 to achieve linkage, and the DC motor 3 is rotated through the transmission group to link the rotating part 5 to realize the opening and closing of the circuit breaker 7.

[0064] Such as figure 2 and image 3 As shown, the center of the toothed turntable 44 is provided with a perforation for the rotating part 5 to pass through, and one side of the rotating part 5 is provided with a linkage block 51, and the insertion rod 53 is plugged with the rotating part 5 to realize detachable connection, and the insertion rod ...

Embodiment 2

[0071] Embodiment 2: An operating mechanism of a circuit breaker, such as Figure 8 As shown, the difference between it and Embodiment 1 is that the installation angle of the toothed turntable 44 is different. When the rotating part 5 is in the handle of the linkage circuit breaker 7 and the handle is closed, the boss 431 on the transmission gear 43 and the hook part 61 of the linkage 6 When the rotating member 5 rotates in the opening direction, the boss 431 of the transmission gear 43 will drive the linkage member 6 to rotate.

[0072] Such as Figure 9 As shown, the structure of the linkage piece 6 is the same as that of the linkage piece 6 in Embodiment 1, and a hook portion 61 and a linkage lever 62 for tripping the linkage circuit breaker 7 are also provided.

[0073] In the specific working process: the closing process is the same as the closing method in Embodiment 1 (no more details here), when opening is required, when the circuit board 2 issues an opening command, ...

Embodiment 3

[0075] Embodiment 3: An operating mechanism of a circuit breaker, such as Figure 11-13 As shown, the difference between it and Embodiment 1 or 2 is that the structure of the linkage 6 is different, and the linkage 6 is also rotatably connected to the housing 1. The linkage 6 includes a linkage rod 62 and a finger 63, and the linkage rod 62 is located in the transmission On one side of the gear 43, the side of the transmission gear 43 facing away from the linkage rod 62 is provided with a convex tooth 432, and the claw 63 is in contact with the convex tooth 432. When the transmission gear 43 rotates, the claw 63 touches the convex tooth 432 to drive the linkage. 6 rotates, and the tripping of the circuit breaker 7 through the linkage lever 62 is linked to realize the opening. Compared with Embodiment 1 and Embodiment 2, the position of the circuit breaker 7 has changed, and can adapt to circuit breakers 7 of different specifications on the market, which is more applicable.

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PUM

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Abstract

The invention discloses an operating mechanism of a circuit breaker. The main points of the technical scheme are that the operating mechanism comprises a shell. The shell is internally provided with a DC motor, a transmission group and a rotating member which is rotatably connected with the shell. A plug rod used for penetrating through a circuit breaker handle to realize linkage connection is connected on the rotating member in a plugging way. The transmission group comprises a worm rod, a worm wheel, a transmission gear and a toothed rotating disc which are arranged in turn. The DC motor is connected with the rotating member to rotate in a linkage way through the transmission group so that separating and closing of the circuit breaker is realized, the operation mode of the conventional operating mechanism through a steering engine, an electromagnet or a hydraulic motor can be eliminated, separating and closing are realized through forward and backward rotation of the DC motor and rotation of the worm wheel and the worm rod and linkage connection with the rotating member of the transmission gear, and the whole transmission structure is simple and less in components, and thus the overall size of the operating mechanism is enabled to be small, cost can be reduced and the operating mechanism is suitable for mass production. Besides, action speed of gear transmission is high in speed and great in stability so that safety hidden trouble can be reduced by operating rapid separating and closing of the circuit breaker.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to an operating mechanism of a circuit breaker and a control method thereof. Background technique [0002] With the gradual promotion of the smart grid, intelligent power distribution technology has become a hot field. The intelligence of electrical switches is a development trend, and the market usage is huge. In the prior art, the remote operation accessories of the circuit breaker generally use power such as steering gear, electromagnet or hydraulic motor to operate the mechanism to drive the circuit breaker to realize closing and opening. [0003] For example, the Chinese patent with the notification number CN204360942U discloses an operating mechanism for a circuit breaker, which includes a front plate, a middle plate and a bottom plate. An operating shaft, an energy storage shaft and an output spindle are arranged between the front plate and the bottom plate. The output spind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
CPCH01H71/10
Inventor 李俊鹏蔡建伟
Owner ZHEJIANG GEYA ELECTRICAL CO LTD