Disconnecting switch operating mechanism and travel control device of disconnecting switch
A technology of isolation switch and stroke control, which is applied to the power device inside the switch, etc., can solve the problems of the temperature rise of the isolation switch, the insufficient engagement of the dynamic and static contacts, the position indication error of the three-position isolation switch, etc., and achieves high precision. Effect
Active Publication Date: 2013-10-09
STATE GRID CORP OF CHINA +2
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Problems solved by technology
However, during the meshing transmission process of the gear set, the small manufacturing error of the gears will be transmitted step by step, so that the meshing transmission of the gears will have a large transmission error. There is a large deviation between the setting times, which will lead to a large error in the "closing to isolation" and "isolation to grounding" actions of the three-position isolating switch and the corresponding position indication, which will lead to serious errors in the three-position isolating switch. The engagement of the moving and static contacts is not in place, so that the local temperature rise in the isolating switch is too high, resulting in accidents
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[0024] Embodiments of the isolating switch operating mechanism of the present invention: as Figure 1 to Figure 8 As shown, the isolating switch operating mechanism is a three-position isolating switch operating mechanism controlled by dual signals. The three-position isolating switch operating mechanism includes a motor 4, a stroke control device, a grounding electrode 16, a lead screw 17, an upper conductive Pole 18, moving contact 19, lower conductive electrode 20, controller, wherein the stroke control device includes a disc-shaped station indicator 1, trigger stroke switch 2, transmission shaft 3, transmission transmission chain 5, first action gear 6 , second action gear 7, first control gear 8, second control gear 9, third control gear set 10, fourth control gear set 11, trigger gear 12, fifth control gear set 13, positioning gear 14, positioning stroke Switch 15. The lower end of the lead screw 17 is threaded and connected to the upper end of the movable contact 19, a...
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The invention discloses a disconnecting switch operating mechanism and a travel control device of a disconnecting switch, wherein the transmission ratio between a first gear and an output shaft of a motor is N times of the transmission ratio between a second gear and the output shaft of the motor; a controller is connected with a first travel switching circuit and a second travel switching circuit in a sampling mode through a logical operation unit which is used for conducting the operation of the logic 'and', so that when deviation happens to gear transmission, the trigger signal deviation generated on the second travel switch is only one Nth of the trigger signal deviation generated on a first travel switch, and the trigger signal emitted by a second travel switch is in charge of triggering; when a trigger segment in a trigger period of the first travel switch and a trigger segment in a trigger period of the second travel switch appear at the same time, through the judgment of the logic 'and', control over the trigger signal is started, so that the motor is made to stop working; therefore, the accuracy of the trigger signal is decided by the trigger segment of the trigger signal emitted by the second travel switch in the whole control process, the accuracy of control over the trigger signal is improved, and accurate control over motions of the disconnecting switch is realized.
Description
technical field [0001] The invention relates to an isolating switch operating mechanism controlled by signal triggering in a power system and a stroke control device used in the isolating switch operating mechanism. Background technique [0002] At present, the three-position isolating switch used in the power system usually adopts an operating mechanism controlled by a single signal trigger, and the trigger signal is generated by a micro travel switch driven by a gear set. Electric operating mechanism, the operating mechanism includes a motor, the motor transmits power to the drive shaft through the gear set, and the drive shaft is equipped with a drive cam linked with the micro travel switch to control the power off of the motor through the micro travel switch . However, during the meshing transmission process of the gear set, the small manufacturing error of the gears will be transmitted step by step, so that the meshing transmission of the gears will have a large transm...
Claims
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Inventor 孙鹏程王帮田张志彬王其中洪文芳李海峰李树昆太庆宇张军委李炎光张耀海杨卫华
Owner STATE GRID CORP OF CHINA