The invention relates to a multi-contact contact assembly of a switch machine, which is characterized in that firstly, a plurality of electric contacts of a static contact sheet are respectively contacted with split rings of a movable contact ring to increase contact points, and meanwhile, a multi-degree-of-freedom movable contact ring is utilized to adapt to manufacturing and assembling errors of the static contact sheet to ensure uniform linear contact of contacts; secondly, a gap between a movable contact ring and a movable contact column is utilized to enable the movable contact ring not to be in contact with the movable contact column in the limit installation position state and the vibration state of the movable contact set, the movable contact column is located near the center of the contact ring, and the pressure of a static contact piece is kept constant; thirdly, in the contact conversion process, a contact insulating layer at the top of the static contact sheet is used for rapidly extinguishing arc to reduce the influence of arc discharge on the contact resistance of the contact; finally, the surfaces of the movable and static contacts are plated with silver for corrosion prevention, thereby reducing the formation of wear particles, reducing the contact resistance of the contacts in use, and improving the contact reliability of the contacts.
本发明涉及一种转辙机多触点接点组件,它首先利用静接点片的多触电触头分别接触动接点环的分体环,增加接触点,同时利用多自由度动接点环适应静接点片的制造和装配误差,保证接点线性接触均匀;其次利用利用动接点环与动接点柱的间隙使动接点组极限安装位置状态和振动状态下动接点环均不与动接点柱接触,且动接点柱处于接点环中心附近,保持静接点片压力恒定;再次,在接点转换过程中,利用静接点片顶部触头绝缘层快速灭弧减小拉弧对接点接触电阻的影响;最后在动静接点表面采用镀银防腐,减小磨损颗粒形成降低使用过程中的接点接触电阻,提高接点接触的可靠性。
Multi-contact joint assembly of point switch
一种转辙机多触点接点组件
2023-03-10
Patent
Electronic Resource
Chinese
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