Shock resistant continuous measurement type shift contactor

Abstract

A shock resistant continuous measurement type shift contactor mainly solves the problems of the shift contactors used for railway point electric switch machines, such as poor shock resistance and incapability of continuous measurement. The shift contactor is characterized in that a carrier panel is arranged on a permanent seat; two contact points of a microswitch are fixedly arranged on the carrier panel in an insulating manner; a fixed end of a conductive spring plate is fixedly connected with one contact point; a moving contact which is matched with the other contact point is arranged in themiddle of the conductive spring plate; a pressure lever arranged above a springing end of the conductive spring plate controls compression joint and springing separation of the moving contact and theother contact point; the pressure lever is positioned in a pressure lever sleeve in a sliding way; the bottom of the pressure lever is connected with a fixed end of a pawl stop; a springing end of the pawl stop is jointed with a bayonet on the pressure lever sleeve; an upper regulating cylinder is thread-fitted on the upper part of a crown bar; a pawl stop control mechanism is arranged between the upper regulating cylinder and the pawl stop; the lower part of the crown bar runs through a lower regulating cylinder and a crown bar downward spring is arranged between the crown bar and the lowerregulating cylinder; an eddy current displacement sensor which can measure displacement continuously is arranged in a shell. The shift contactor has stable and shock-resistant properties, can continuously measure and predict the shift and reach early warning function.

Description

technical field [0001] The invention relates to a displacement contactor used in a railway turnout electric switch machine, in particular to a displacement contactor with stable performance, shock resistance, continuous detection and reporting of displacement, and early warning function. Background technique [0002] The main function of the shift contactor is: when a fork is squeezed, the squeeze pin of the electric switch machine is broken, the action rod is displaced relative to the rack block, the vertical push rod of the shift contactor is lifted, and the indicating circuit is cut off. , giving an alarm message. The existing displacement contactor is composed of a lower pushrod adjustment mechanism and an upper reed type micro switch. The ejector rod adjustment mechanism is used to adjust the gap between the lower end of the contact and the rack ejector rod, and the micro switch is used to bounce off the movable contact when the action rod is displaced relative to the ...

AI Technical Summary

Problems solved by technology

When the contact pressure drops, the dead point stroke will increase, making it easy for the moving contact to stay in the middle position, affecting driving safety

[0005] 2. The elastic force of the reed micro switch shrapnel is too small, and the contact pressure is only 0.68~1N (the iron standard is 0.68N). Often when the train speed is high and the vibration is large, the shrapnel is easy to bounce, causing false alarms

[0006] 3. With long-term use, the elasticity of the shrapnel is easy to decrease, and the contact cannot guarantee sufficient pressure

No early warning until the squeeze pin is cut off

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