Operating mechanism of three-station switch
A three-position switch and operating mechanism technology, applied in the direction of air switch parts, etc., can solve the problems of the position change of the three-position switch, the damage of the operating mechanism, and the lack of measures to force the stop when the operation is in place, so as to prevent misoperation, The effect of preventing overshoot
Active Publication Date: 2012-07-04
SHENYANG HUADE HIGH TECH ELECTRIC CO LTD
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Problems solved by technology
[0003] (1) Since there is no measure to force stop when the operation is in place, if the control circuit fails during electric operation and the motor cannot stop in place, it will cause the three-position switch to overshoot, resulting in damage to the operating mechanism;
[0004] (2) Since the status indicating device needs to be realized through a gear reduction mechanism, the structure is complex and the failure rate is high;
[0005] (3) Since there is no limit locking structure, turning the output shaft by external force may change the position of the three-position switch when no operation is performed;
[0006] (4) Since the manual operation holes for the isolation switch and the ground switch share one, it is easy to cause misoperation
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[0097] The present invention includes a mechanism box 1, an electric drive component consisting of an electric motor 10, an electromagnetic clutch 11 and an electric output gear 14, including a manual operation selection plate assembly assembly 2, a padlock assembly 3, a display rotary lever device 4, and a nut assembly The assembly 5, the inner core upper assembly assembly 6, the inner core assembly assembly 12, the screw spindle assembly assembly 13, the mechanical clutch 19 and the mechanism output shaft 20 constitute a manually operated drive component.
[0098] The present invention will be described in detail below in conjunction with the drawings.
[0099] Such as figure 1 As shown, the present invention includes a mechanism box 1, which includes an operation panel 1.1, an upper cover 1.2, a rear plate 1.3, and a bottom bent plate 1.4 where the left side plate, the right side plate and the bottom plate are integrated;
[0100] Such as figure 2 As shown, there are isolation...
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The invention relates to an operating mechanism of a three-station switch, which overcomes the problems of the existing operating mechanism that three-station switch overshoot can be caused, the failure rate of a state indication device is high, the position of the three-position switch is easy to change and misoperation is easy to cause. The operating mechanism of the three-station switch is characterized in that an electric driving part consists of an electromotor, an electromagnetic clutch and an electric output gear, and a manual driving part consists of a manual selection disk assembling component, a padlock component, a display rotary rod device, a nut assembling component, an inner core assembling component, a lead screw main shaft assembling component and a mechanical clutch. The operating mechanism has the beneficial effects that the three-station switch overshoot and the misoperation can be effectively prevented, and the position change of the three-station switch is avoided; and a mechanism state display device is matched with a switch state sign set on an operation panel to accurately display the position of the three-station switch in real time, the display is visual and convenient, and a complex reduction gearbox structure is omitted.
Description
Technical field [0001] The invention belongs to the technical field of power transmission and distribution equipment, and in particular relates to an operating mechanism for a three-station switch for opening and closing a three-station switch in a medium and high-voltage switchgear. Background technique [0002] In the prior art, the operating mechanism of the three-position switch used for the gas-insulated metal-enclosed switch has a spring mechanism and a gear transmission mechanism, which are mainly composed of a motor, a transmission part and an operation part. The technical problems are: [0003] (1) Since there are no measures to force a stop when the operation is in place, if the control circuit fails during electric operation, the motor cannot be stopped in place, which will cause the three-position switch to overshoot and damage the operating mechanism; [0004] (2) Since the status indicating device needs to be realized through a gear reduction mechanism, the structure is...
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IPC IPC(8): H01H31/10
Inventor 国世峥侯亚平张交锁周建光
Owner SHENYANG HUADE HIGH TECH ELECTRIC CO LTD
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