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Closing keeping device for spring operation mechanism

A technology for closing and operating mechanisms, which is applied to power devices, high-voltage air circuit breakers, and electrical components inside the switch. It can solve problems such as maintaining the opening position, and achieve the effects of improving reliability and preventing misoperation

Active Publication Date: 2011-01-19
西安西电高压开关操动机构有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is: when the operating power of closing and opening is increased, the circuit breaker operating mechanism will appear "open after closing". The so-called "open after closing" means that the operating mechanism of the circuit breaker only accepts When the closing command is received, the operating mechanism should only be able to complete the closing action, and should be reliably kept at the closing position, but the operating mechanism has actually completed the closing and opening actions, and the mechanism remains at the opening position

Method used

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  • Closing keeping device for spring operation mechanism
  • Closing keeping device for spring operation mechanism
  • Closing keeping device for spring operation mechanism

Examples

Experimental program
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Embodiment Construction

[0014] like figure 1 , 2 As shown, the closing holding pawl 2 is connected with the mechanism frame 1 through the closing holding pawl fixing pin 23, and the closing holding pawl 2 can rotate around the closing holding pawl fixing pin 23; the dial pin 24 is fixed on the closing holding On the fingertip of the pawl 2; the roller 21 is connected with the closing holding pawl 2 through the pin shaft; One end is defined above the finger root of the closing holding pawl 2;

[0015] Action principle:

[0016] 1. Closing and holding process

[0017] 1) The closing electromagnet coil 15 is energized, the moving iron core and the static iron core are attracted, and the moving iron core drives the closing lever 14 to move, pushing the closing trigger 16 to rotate around the pin shaft 26 .

[0018] 2) The closing trigger 16 rotates counterclockwise to release the closing spring retaining pawl 12 .

[0019] 3) Closing spring holding catch 12 rotates clockwise to release closing sprin...

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Abstract

The invention discloses a closing keeping device for a spring operation mechanism. The device comprises an output crank which is connected with the fracture of a breaker by a connecting board and driven by a cam system, and an opening and closing trigger which is fixed on a mechanism frame. The device is characterized in that the output crank is provided with a closing keeping lock pin which is blocked by a closing keeping interlock mechanism that is arranged between the output crank and the opening trigger after the closing is finished, thus keeping the closing operation in steady self-lock state. The device can keep the breaker in the closing position reliably and steadily.

Description

technical field [0001] The invention relates to a closing and holding device for a spring operating mechanism used in a circuit breaker in a high-voltage switchgear. Background technique [0002] The spring operating mechanism used in the original circuit breaker is closed and maintains the latch. Due to the force of the opening spring, the torque transmitted to the opening trigger through the contact surface of the closing and maintaining lock pin and the original closing and maintaining pawl is relatively large. The existing problem is: when the operating power of closing and opening is increased, the circuit breaker operating mechanism will appear "open after closing". The so-called "open after closing" means that the operating mechanism of the circuit breaker only accepts When the closing command is received, the operating mechanism should only be able to complete the closing action, and should be reliably kept at the closing position, but the operating mechanism actuall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/30H01H33/40
Inventor 苏菊芳程立张猛王传川
Owner 西安西电高压开关操动机构有限责任公司
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