Development of Protective Pressure Plate on/off Tool
[Purposes]In order to improve the efficiency of switching on/off the protective pressure plate during the safety maintenance process of ultra-high voltage substations and reduce the error rate of switching on/off the protective pressure plate,a protective pressure plate switching tool has been devel-oped.[Methods]Firstly,this paper designs a dual nut simultaneous input/output gear transmission struc-ture to solve the problem of simultaneous operation of two nuts;this paper designs friction torque limiters to achieve overload mechanical protection goals;this paper designs a mechanism to adjust the chord length corresponding to the center angle of the circle to achieve the purpose of adapting to different types of pressure plates.Then,a dual closed-loop motor drive control was designed to solve the problem of torque stability.Finally,the overall development of protective pressure plate on and off tools was com-pleted.[Findings]The application test of tools was conducted in the Luoyang branch,and the trial re-sults showed that it can improve work efficiency by more than 50%.[Conclusions]The use of protective pressure plate switching tools has achieved reliable,fast,and labor-saving switching of protective pres-sure plates.
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