Study on Influence of Clearance of Motion Pair on Dynamic Characteristics of MCCB Operating Mechanism

肖安建; 李红军; 戴水东; 赵海峰

doi:10.13433/j.cnki.1003-8728.20230098

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Study on Influence of Clearance of Motion Pair on Dynamic Characteristics of MCCB Operating Mechanism

更新时间：2026-07-10

- Study on Influence of Clearance of Motion Pair on Dynamic Characteristics of MCCB Operating Mechanism
- Mechanical Science and Technology for Aerospace Engineering Vol. 43, Issue 10, Pages: 1654-1663(2024)
- 作者机构：
  
  1. 浙江理工大学机构机械与自动控制学院,杭州,310018
  2. 杭申集团杭州之江开关股份有限公司,杭州,311234
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20230098
  CLC： TM561
- Published：2024
- 稿件说明：
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肖安建, 李红军, 戴水东, et al. Study on Influence of Clearance of Motion Pair on Dynamic Characteristics of MCCB Operating Mechanism[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(10): 1654-1663.
DOI：

肖安建, 李红军, 戴水东, et al. Study on Influence of Clearance of Motion Pair on Dynamic Characteristics of MCCB Operating Mechanism[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(10): 1654-1663. DOI： 10.13433/j.cnki.1003-8728.20230098.

摘要

针对MCCB操作机构的7个铰链点间隙对机构动力学特性的影响，基于正交试验设计法建立了18组仿真实验，通过极差分析得出了各间隙点对操作机构各指标的影响大小，采用带权重的分目标乘除法相结合的方式建立综合评价函数，对动触杆在位移、速度、加速度和下连杆的应力分析方面做了无间隙和有间隙的仿真对比分析。结果表明：仿真时忽略其运动副间隙的影响，所得各指标仿真值最大偏差达49.45%，平均偏差至少5%以上; 对MCCB操作机构综合影响最大的间隙点为推拉杆与上连杆的连接轴间隙，理想铰链下的动力学仿真，位移变化、应力的分布及基本变化可供参考，而速度特性、加速度特性、最大应力值以及最大应力出现时刻则会偏离实际。

Abstract

In view of the influence of the clearance of 7 hinge points of MCCB operating mechanism on the dynamic characteristics of the mechanism

18 groups of simulation experiments are designed by using the orthogonal experimental design method. The influence of the each clearance point on the indexes of the operating mechanism is obtained through the range analysis. The comprehensive evaluation function is established by combining the weighted sub objective multiplication and division method. Finally

the dynamic contact rod is in terms of the acceleration and stress analysis of the lower connecting rod

the simulation and comparative analysis without clearance and with clearance are made. The results show that if the influence of the clearance of the moving pair is ignored in the simulation

the maximum deviation of the simulation values of each index is 49.45%

and the average deviation is at least 5%. The clearance point with the greatest comprehensive impact on the MCCB operating mechanism is the connecting shaft clearance between the push-pull rod and the upper connecting rod. The dynamic simulation under the ideal hinge chain

its displacement change

stress distribution and basic change trend can be used for reference

while the speed characteristics

acceleration characteristics The maximum stress value and the occurrence time of the maximum stress will deviate from the reality.

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