A circuit breaker opening and closing handle locking device

Abstract

This utility model discloses a circuit breaker opening / closing handle locking device, including a base plate with a folded edge at the bottom, an upper clamping plate fixed to the upper inner side of the base plate, and a lower clamping plate disposed between the upper clamping plate and the folded edge; an adjustable fastening handle that can move up and down is provided on the folded edge, and the top of the adjustable fastening handle supports the lower clamping plate; the adjustable fastening handle is used to move the lower clamping plate closer to the upper clamping plate to lock the opening / closing handle; or to move the lower clamping plate away from the upper clamping plate to unlock the opening / closing handle. This utility model can lock and cover the circuit breaker's opening / closing handle, preventing the circuit breaker from tripping due to impact from external objects or accidental contact with the opening / closing handle during live-line installation, thus improving the safety and reliability of live-line installation; the distance between the upper and lower clamping plates is adjustable, making it compatible with circuit breaker products from different manufacturers and highly versatile.

Description

Technical Field

[0001] This utility model relates to distribution network circuit breaker equipment, specifically to a circuit breaker opening and closing handle locking device. Background Technology

[0002] Currently, in order to improve power supply reliability, 10kV distribution network systems, especially overhead line power supply networks, often adopt live-line installation for equipment installation and replacement. Considering the complex environment of overhead line layout and the structural characteristics of circuit breaker equipment, the operating handles of existing circuit breaker equipment are easily bumped by foreign objects or accidentally touched by personnel during live-line installation, which may cause the equipment to trip erroneously, resulting in power outages or even personal injury accidents due to arcing. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a circuit breaker opening and closing handle locking device to improve the reliability of uninterrupted operation during the installation and replacement of overhead line circuit breaker equipment.

[0004] Technical solution: The present invention provides a circuit breaker opening and closing handle locking device, comprising a base plate with a folded edge at the bottom, an upper clamping plate fixed to the upper inner side of the base plate, and a lower clamping plate disposed between the upper clamping plate and the folded edge; an adjustable fastening handle that can move up and down is provided on the folded edge, and the top of the adjustable fastening handle supports the lower clamping plate; the adjustable fastening handle is used to move the lower clamping plate closer to the upper clamping plate to lock the opening and closing handle; or to move the lower clamping plate away from the upper clamping plate to unlock the opening and closing handle.

[0005] Furthermore, the position of the upper clamp on the base plate is adjustable.

[0006] Furthermore, the substrate is provided with vertical waist-shaped holes, and the upper clamping plate is fixed to the substrate by bolts and quick-release nuts in conjunction with the waist-shaped holes.

[0007] Furthermore, the base plate is provided with clearance holes for avoiding the fastening bolts at the end of the split handle.

[0008] Furthermore, guide holes are provided at both ends of the folded edge, and second screw holes are provided at both ends of the lower clamping plate. A guide rod is inserted through the guide hole, and the upper end of the guide rod is threaded into the second screw hole.

[0009] Furthermore, the top of the base plate has an anti-turning edge for overlapping the circuit breaker housing to prevent the circuit breaker opening / closing handle locking device from rotating.

[0010] Furthermore, adjust the threaded connection between the fastening handle and the first screw hole at the middle position of the folded edge.

[0011] Beneficial Effects: Compared with the prior art, this utility model has the following advantages: This utility model uses upper and lower clamping plates and a base plate to lock and shield the circuit breaker's opening and closing handles, preventing the circuit breaker from tripping due to impacts from external objects or accidental contact with the handles during live-line installation, thus improving the safety and reliability of live-line installation. Furthermore, the spacing between the upper and lower clamping plates is adjustable, allowing it to adapt to circuit breaker products from different manufacturers, making it highly versatile and usable as a standard tool. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a circuit breaker opening / closing handle locking device installed on a circuit breaker, according to an embodiment of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of a circuit breaker opening / closing handle locking device provided in an embodiment of this utility model;

[0014] Figure 3 This is a schematic diagram of the substrate structure in an embodiment of this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Appendix Figures 1 to 3 The accompanying figure labels are as follows:

[0017] 1. Circuit breaker; 11. Opening / closing handle; 2. Opening / closing handle locking device; 21. Guide rod; 22. Adjusting and fastening handle; 23. Quick-release nut; 24. Bolt; 25. Upper clamping plate; 26. Base plate; 261. Waist-shaped hole; 262. Clearance hole; 263. Guide hole; 264. Folded edge; 265. First screw hole; 266. Anti-folding edge; 27. Lower clamping plate; 271. Second screw hole.

[0018] like Figures 1 to 3 As shown, this utility model embodiment provides a circuit breaker opening and closing handle locking device 2, which includes a base plate 26, an upper clamping plate 25, a lower clamping plate 27, a guide rod 21, and an adjusting and fastening handle 22.

[0019] The base plate 26 has a vertical oblong hole 261 at its upper part and a clearance hole 262 in its middle part. The upper clamping plate 25 is an L-shaped component, which is fixed to the upper inner side of the base plate 26 by bolts 24 and quick-release nuts 23 in conjunction with the oblong hole 261. Based on the oblong hole 261, the position of the upper clamping plate 25 on the base plate 26 can be adjusted. The clearance hole 262 is used to avoid the fastening bolt at the end of the opening / closing handle 11.

[0020] The substrate 26 has a folded edge 264 at its bottom, with a first screw hole 265 in the middle and guide holes 263 at both ends. A lower clamping plate 27 is positioned between the upper clamping plate 25 and the folded edge 264, its top fitting into the opening / closing handle 11. Second screw holes 271 are located at both ends of the lower clamping plate 27. A guide rod 21 passes through the guide hole 263 of the substrate 26 and then tightens into the second screw hole 271 at the end of the lower clamping plate 27. An adjusting and fastening handle 22 is threadedly connected to the first screw hole 265, and its top supports the lower clamping plate 27. Rotating the adjusting and fastening handle 22 clockwise moves the lower clamping plate 27 upwards, closer to the upper clamping plate 25, allowing the upper and lower clamping plates to engage and lock the opening / closing handle 11. Rotating the adjusting and fastening handle 22 counterclockwise moves the lower clamping plate 27 downwards, away from the upper clamping plate 25, thereby unlocking the opening / closing handle 11.

[0021] In addition, the top of the base plate 26 has an anti-bend edge 266 for attaching to the circuit breaker 1 housing to prevent the circuit breaker opening and closing handle locking device from rotating.

[0022] The method of using this utility model is as follows:

[0023] In use, first pull the opening / closing handle 11 to put the circuit breaker 1 in the closed position. Then, loosen the quick-release nut 23 of the opening / closing handle locking device so that the upper clamping plate 25 can move up and down and the fastening handle 22 can be rotated counterclockwise to ensure that the distance between the upper and lower clamping plates is greater than the width of the opening / closing handle 11. Then, press the anti-turning edge 266 against the circuit breaker 1 housing and push the opening / closing handle locking device towards the circuit breaker 1 until the inner side of the base plate 26 is pressed against the opening / closing handle 11. Then, adjust the upper clamping plate 25 up and down so that the upper clamping plate 25 falls to the upper end of the opening / closing handle 11 and tighten the quick-release nut 23. Finally, by rotating the fastening handle 22 clockwise, move the lower clamping plate 27 up until it clamps the lower end of the opening / closing handle 11, thus completing the locking of the opening / closing handle 11.

[0024] When unlocking, simply rotate the adjusting and fastening handle 22 counterclockwise to move the lower clamp 27 down so that it is disengaged from the lower end of the opening and closing handle 11. At this time, move the entire opening and closing handle locking device away from the circuit breaker 1 so that the anti-turning edge 266 is disengaged from the circuit breaker 1 and the locking can be released.

Claims

1. A circuit breaker opening / closing handle locking device, characterized in that, The base plate (26) includes a base plate (26) with a folded edge (264) at the bottom. An upper clamping plate (25) is fixed to the upper inner side of the base plate (26). A lower clamping plate (27) is provided between the upper clamping plate (25) and the folded edge (264). An adjustable fastening handle (22) that can move up and down is provided on the folded edge (264). The top of the adjustable fastening handle (22) supports the lower clamping plate (27). The adjustable fastening handle (22) is used to move the lower clamping plate (27) closer to the upper clamping plate (25) to lock the opening and closing handle (11); or to move the lower clamping plate (27) away from the upper clamping plate (25) to unlock the opening and closing handle (11).

2. The circuit breaker opening / closing handle locking device according to claim 1, characterized in that, The position of the upper clamp (25) on the base plate (26) is adjustable.

3. The circuit breaker opening / closing handle locking device according to claim 2, characterized in that, The substrate (26) is provided with a vertical waist-shaped hole (261), and the upper clamp (25) and the substrate (26) are fixed by bolts (24) and quick-release nuts (23) in conjunction with the waist-shaped hole (261).

4. The circuit breaker opening / closing handle locking device according to claim 1, characterized in that, The base plate (26) is provided with a clearance hole (262) for avoiding the fastening bolt at the end of the opening and closing handle (11).

5. The circuit breaker opening / closing handle locking device according to claim 1, characterized in that, The folded edge (264) has guide holes (263) at both ends, and the lower clamping plate (27) has second screw holes (271) at both ends. A guide rod (21) is inserted through the guide hole (263), and the upper end of the guide rod (21) is threaded into the second screw hole (271).

6. The circuit breaker opening / closing handle locking device according to claim 1, characterized in that, The base plate (26) has an anti-turning edge (266) on the top for attaching to the circuit breaker (1) housing to prevent the circuit breaker opening and closing handle locking device from rotating.

7. The circuit breaker opening / closing handle locking device according to claim 1, characterized in that, The first screw hole (265) at the middle position of the adjusting fastening handle (22) and the folded edge (264) is threadedly connected.

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