All-insulation low-voltage air circuit breaker switch power-off mistaken switching-on prevention device
By installing insulating clamping plates and nylon screws on both sides of the low-voltage air circuit breaker switch, and using nuts to fix the operating handle, the problem of accidental energization of the circuit breaker is solved, ensuring equipment safety and preventing accidents.
Patent Information
- Application Number
- CN202423202657.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In production operations, low-voltage air circuit breakers may be accidentally closed after being disconnected, leading to accidents. Current technology cannot effectively prevent such accidents.
Design a device to prevent accidental closing of a fully insulated low-voltage air circuit breaker switch. By installing insulating clamping plates and nylon screws on both sides of the circuit breaker and fixing the operating handle with nylon wing nuts, the circuit breaker can be prevented from being accidentally closed.
This ensures that the circuit breaker switch cannot be accidentally closed after it is opened, thus guaranteeing safe equipment maintenance and preventing accidents.
Smart Images
Figure CN223651341U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrical equipment maintenance technology, and in particular relates to a device for preventing accidental closing of a fully insulated low-voltage air circuit breaker switch. Background Technology
[0002] A low-voltage air circuit breaker is a switching device that can connect and disconnect normal load current and overload current, as well as short-circuit current. It is widely used in low-voltage power distribution systems at all levels of feeder lines, power control of various mechanical equipment, and control and protection of electrical terminals.
[0003] Current problems in production operations: During production, the replacement of damaged electrical components, maintenance of low-voltage lines, and repair of production machinery all require disconnecting the low-voltage air circuit breaker to cut off power before starting maintenance work. If the disconnected low-voltage air circuit breaker is accidentally reconnected by personnel, it could lead to personal injury or unimaginable accidents. Summary of the Invention
[0004] The purpose of this utility model is to provide a fully insulated low-voltage air circuit breaker switch power-off anti-misoperation device to prevent personnel from accidentally re-energizing the low-voltage air circuit breaker switch after it has been disconnected, thereby ensuring the safe maintenance of the controlled equipment and avoiding accidents.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] The present invention relates to a fully insulated low-voltage air circuit breaker switch power-off anti-misoperation device, characterized in that it includes two insulating clamping plates disposed on both sides of the low-voltage air circuit breaker switch, two upper and lower holes disposed on each insulating clamping plate, an expanding nylon screw threaded through the two upper holes of the two insulating clamping plates on both sides, a clamping nylon screw threaded through the two lower holes of the two insulating clamping plates on both sides, and nylon wing nuts disposed at both ends of the expanding nylon screw and the clamping nylon screw respectively.
[0007] The clamping nylon screw is engaged with the operating handle of the disconnected low-voltage air circuit breaker switch.
[0008] The nylon wing nuts at both ends of the clamping nylon screw are screwed into the clamping nylon screw from the outside of the insulating clamping plate.
[0009] The nylon wing nuts at both ends of the expanding nylon screw are screwed into the expanding nylon screw from the inside of the insulating clamping plate.
[0010] Advantages of this utility model:
[0011] This utility model relates to a fully insulated low-voltage air circuit breaker switch power-off anti-misclosing device, which can prevent the disconnected voltage circuit breaker switch from being mistakenly closed, ensuring safe maintenance of the controlled equipment and avoiding accidents. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This utility model Figure 1 Side view. Detailed Implementation
[0014] The specific embodiments of this utility model are further described below with reference to the accompanying drawings.
[0015] like Figure 1 , 2 As shown, the fully insulated low-voltage air circuit breaker switch power-off anti-misoperation device of this utility model is characterized by comprising two insulating clamping plates 6 disposed on both sides of the low-voltage air circuit breaker switch 1, two upper and lower holes disposed on each insulating clamping plate 6, an expansion nylon screw 5 passing through the two upper holes of the two insulating clamping plates 6 on both sides, a clamping nylon screw 3 passing through the two lower holes of the two insulating clamping plates 6 on both sides, and nylon wing nuts 4 respectively disposed at both ends of the expansion nylon screw 5 and the clamping nylon screw 3.
[0016] The clamping nylon screw 3 is engaged with the operating handle 2 of the disconnected low-pressure air circuit breaker switch 1.
[0017] The nylon wing nuts 4 at both ends of the clamping nylon screw 3 are screwed into the clamping nylon screw 3 from the outside of the insulating clamping plate 6.
[0018] The nylon wing nuts 4 at both ends of the expansion nylon screw 5 are screwed into the expansion nylon screw 5 from the inside of the insulating clamping plate 6.
[0019] The present invention adopts the following technical solution:
[0020] Two insulating clamping plates 6, each 150mm long and 50mm wide, are made from Φ10mm epoxy electrical insulation board. Two Φ12.5mm holes, 20mm from the edge and 30mm apart, are cut into the long side of the insulating clamping plate 6. When in use, they are used on both sides of the low-voltage air circuit breaker switch 1 to achieve the clamping and fixing function.
[0021] 2. Insert two Φ12mm×200mm long nylon screws into the holes of the insulating clamping plate 6, and insert the lower clamping nylon screw 3 into the operating handle 2 of the disconnected low-voltage air circuit breaker switch 1 to realize the anti-misoperation function.
[0022] 3. Use four Φ12mm nylon wing nuts 4. Two of the nylon wing nuts 4 are screwed in from the outside of the clamping nylon screw 3 and the insulating clamping plate 6 from the bottom. When the nylon wing nuts 4 are screwed inward, the insulating clamping plate 6 is pressed tightly against both sides of the low-voltage air circuit breaker switch 1. The other two nylon wing nuts 4 are screwed in from the inside of the expanding nylon screw 5 and the insulating clamping plate 6 from the top. When the nylon wing nuts 4 are screwed outward, the insulating clamping plate 6 is expanded outward with the clamping nylon screw 3 as the fulcrum, and the insulating clamping plate 6 is firmly clamped to both sides of the low-voltage air circuit breaker switch 1. The clamping nylon screw 3 is locked onto the operating handle 2 of the disconnected low-voltage air circuit breaker switch 1 by the firm clamping action of the insulating clamping plate 6.
[0023] Device operation process: Adjust the nylon wing nuts 4 on the expansion nylon screw 5 and clamping nylon screw 3 according to the distance between the two sides of the low-voltage air circuit breaker switch 1; place the two insulating clamping plates 6 on both sides of the low-voltage air circuit breaker switch 1; clamp the clamping nylon screw 3 onto the operating handle 2 of the disconnected low-voltage air circuit breaker switch 1; tighten the nylon wing nuts 4 on both sides of the clamping nylon screw 3 inward; attach the two insulating clamping plates 6 to both sides of the low-voltage air circuit breaker switch 1; then unscrew the nylon wing nuts 4 at both ends of the expansion nylon screw 5 outward, using the clamping nylon screw 3 on the operating handle 2 of the low-voltage air circuit breaker switch 1 as a fulcrum, and firmly fix the two insulating clamping plates 6 on both sides of the low-voltage air circuit breaker switch 1; thus realizing the protection function of the low-voltage air circuit breaker operating handle 2 being inoperable.
[0024] This utility model relates to a fully insulated low-voltage air circuit breaker switch power-off anti-misclosing device, which can prevent the disconnected voltage circuit breaker switch from being mistakenly closed, ensuring safe maintenance of the controlled equipment and avoiding accidents.
Claims
1. A device for preventing accidental closing of a fully insulated low-voltage air circuit breaker switch, characterized in that, It includes two insulating clamping plates set on both sides of the low-voltage air circuit breaker switch, two upper and lower holes set on each insulating clamping plate, an expansion nylon screw passing through the two upper holes of the two insulating clamping plates on both sides, a clamping nylon screw passing through the two lower holes of the two insulating clamping plates on both sides, and nylon wing nuts set at both ends of the expansion nylon screw and the clamping nylon screw respectively.
2. The fully insulated low-voltage air circuit breaker switch power-off anti-misclosing device according to claim 1, characterized in that, The clamping nylon screw is engaged with the operating handle of the disconnected low-voltage air circuit breaker switch.
3. The fully insulated low-voltage air circuit breaker switch disconnection anti-misclosing device according to claim 1, characterized in that, The nylon wing nuts at both ends of the clamping nylon screw are screwed into the clamping nylon screw from the outside of the insulating clamping plate.
4. The fully insulated low-voltage air circuit breaker switch power-off anti-misclosing device according to claim 1, characterized in that, The nylon wing nuts at both ends of the expanding nylon screw are screwed into the expanding nylon screw from the inside of the insulating clamping plate.