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Motor power-loss locking device of motor operating mechanism and circuit breaker

An operating mechanism and circuit breaker technology, which is applied to high-voltage air circuit breakers, circuits, electrical switches, etc., can solve problems such as affecting the action speed of circuit breakers, and achieve the effects of reducing processing workload, reducing moment of inertia, and simple structure.

Pending Publication Date: 2022-06-24
PINGGAO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a motor power-off locking device and a circuit breaker of a motor operating mechanism, so as to solve the problem in the prior art that the brake disc of the motor brake will affect the operating speed of the circuit breaker

Method used

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  • Motor power-loss locking device of motor operating mechanism and circuit breaker
  • Motor power-loss locking device of motor operating mechanism and circuit breaker
  • Motor power-loss locking device of motor operating mechanism and circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, the circuit breaker is a sulfur hexafluoride circuit breaker, and the sulfur hexafluoride circuit breaker includes a sulfur hexafluoride gas arc extinguishing chamber 11, an electric operating system, and the electric operating system includes an electric operating mechanism 21 and a motor control device 22. The electric operating mechanism 21 includes a mechanism casing 23, a driving motor 24 and a transmission mechanism. The motor control device 22 is used to control the operation of the drive motor 24 . The transmission mechanism is a link mechanism, which is connected between the motor shaft of the driving motor 24 and the moving end insulating pull rod 13 on the SF6 gas arc extinguishing chamber 11, and is used to convert the rotation of the motor shaft into the moving end insulating pull rod 13. telescopic movement. The moving end insulating rod 13 is connected to the moving contact in the arc extinguishing chamber, and is used to drive t...

Embodiment 2

[0049] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the electromagnet forms a yoke by means of the coil base 33 . In this embodiment, the electromagnet has an iron core, and the magnetic field is concentrated by the iron core.

Embodiment 3

[0051] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, friction plates 39 are provided on both sides of the brake disc 35 . In this embodiment, however, the friction plate 39 is disposed on the radially outer side of the brake disc 35 , and has a thickness greater than that of the brake disc 35 .

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Abstract

The invention relates to the field of motor operating mechanisms of high-voltage switch equipment, in particular to power-loss locking of a motor operating mechanism in a circuit breaker, and provides a motor power-loss locking device of a motor operating mechanism and the circuit breaker. The motor power loss locking device of the motor operating mechanism comprises a brake disc, a movable pressure plate, a pressure spring and an electromagnet corresponding to the movable pressure plate, the brake disc can be driven by the movable pressing disc or the electromagnet to move along with axial movement of the movable pressing disc, and a spline structure sliding in the axial direction of the motor shaft is arranged between a shaft hole formed in the brake disc and used for being arranged on the motor shaft in a sleeving mode and the motor shaft. The combination length of the spline structure is smaller than the stroke of the movable pressing disc from the pressing position to the releasing position so that the movable pressing disc can be in a mutually-disengaged state when the movable pressing disc is in the releasing position. According to the scheme, the problem that in the prior art, a brake disc of a motor band-type brake affects the action speed of a circuit breaker can be solved.

Description

technical field [0001] The invention relates to the field of motor operating mechanisms for high-voltage switchgear, in particular to the power-loss locking of the motor operating mechanisms in circuit breakers. Background technique [0002] At present, the supporting operating mechanisms of high-voltage circuit breakers are mainly hydraulic mechanisms, spring mechanisms, etc., with many moving parts and large assembly errors, and it is difficult to ensure the technical requirements of circuit breakers and three-position switches. In the process, various technical parameters of the entire product need to be continuously debugged in cycles, which requires a lot of manpower and material resources. In order to overcome this drawback, meet the technical performance of the product, and realize the intelligence of high-voltage products, a motor operating mechanism has also appeared, which uses a servo motor to directly drive the circuit breaker for opening and closing operations. ...

Claims

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Application Information

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IPC IPC(8): H01H33/36H01H33/38H01H9/24
CPCH01H33/36H01H33/38H01H9/24
Inventor 钱凯韩国辉刘宇仓韬邓渊何宝营何大伟许家源杨锐闫飞越李琼可雷琴井琼琼范乃元陈富国
Owner PINGGAO GRP
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