Design of Arc-shaped Spring for Circuit Breaker Contact Blade

ZHU Qi-qi; CHENG Li; L Jun-ling; XU Gang; MA Chong

doi:10.13296/j.1001-1609.hva.2013.10.003

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Design of Arc-shaped Spring for Circuit Breaker Contact Blade

更新时间：2025-04-26

- Design of Arc-shaped Spring for Circuit Breaker Contact Blade
- High VoltageApparatus Vol. 49, Issue 10, Pages: 104-108(2013)
- 作者机构：
  
  西安西电开关电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.10.003
  CLC： TH135;TM561
- Published：2013
- 稿件说明：
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[1]朱琦琦,程立,吕军玲,徐刚,马冲.断路器瓣形触指用弧形片弹簧设计计算[J].高压电器,2013,49(10):104-108.

ZHU Qi-qi, CHENG Li, L Jun-ling, et al. Design of Arc-shaped Spring for Circuit Breaker Contact Blade[J]. High voltageapparatus, 2013, 49(10): 104-108.
[1]朱琦琦,程立,吕军玲,徐刚,马冲.断路器瓣形触指用弧形片弹簧设计计算[J].高压电器,2013,49(10):104-108. DOI： 10.13296/j.1001-1609.hva.2013.10.003.

ZHU Qi-qi, CHENG Li, L Jun-ling, et al. Design of Arc-shaped Spring for Circuit Breaker Contact Blade[J]. High voltageapparatus, 2013, 49(10): 104-108. DOI： 10.13296/j.1001-1609.hva.2013.10.003.

摘要

阐述了断路器中瓣形触指用弧形片弹簧的结构型式和工作原理

在此基础上总结出了其主要的优点是可以保证均匀的接触压力

而且有较高的疲劳极限与循环次数。在综合考虑弹簧的在断路器中的空间布局、压缩量以及抗弯强度等的前提下

提出了弧形片弹簧的设计计算方法

主要包括3个步骤:①根据触指的空间布局

确定弹簧在触指上的投影长度;②根据触指宽度及弹簧抗弯强度需要

确定弹簧截面尺寸;③计算出满足触指接触压力所需要的压缩量。最后以一个实例验证了所提出方法的可行性。

Abstract

Structure and working principle of arc-shaped spring in a circuit breaker are described and analyzed. The main advantages of the arc-shaped spring are stable contact pressure

high fatigue limit and long life. Taking the spacial arrangement in circuit breaker

compression ratio and tensile strength of the arc-shaped spring into consideration

a method for designing the arc-shaped spring is presented in this paper

including three steps as follows: ①Determining the projection length of the arc-shaped spring on the contact blade according to the spacial arrangement of the contact blade; ② Determining the cross section dimensions of the arc-shaped spring on the basis of width of the contact blade and tensile strength of the arc-shaped spring; ③Calculating the proper compression ratio of the spring to provide stable contact pressure. The proposed design method is verified by an example.

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