Locking device of circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a locking device of a circuit breaker, which comprises a mounting plate, a connecting plate is fixedly connected to the left side of the mounting plate, two groups of connecting columns are fixedly connected to the left side of the mounting plate, a second sleeve plate is slidably arranged on the mounting plate in a penetrating manner, and a first clamping plate is fixedly connected to the left side of the second sleeve plate. An L-shaped sliding block is connected between the connecting plate and the connecting column in a sliding mode, a baffle is fixedly connected to the bottom of the L-shaped sliding block, a circuit breaker is connected between the mounting plate and the first clamping plate in an abutting mode, a positioning assembly for fixing the position of the baffle is installed on the mounting plate, the baffle abuts against the toggle switch, and the position of the baffle is fixed through the positioning assembly. Maintenance personnel or other personnel are prevented from switching on by mistake in the maintenance process, the personal safety of the maintenance personnel is guaranteed, an adjusting assembly for adjusting the distance between the mounting plate and the first clamping plate is installed on the first clamping plate, and the device is convenient to install and suitable for circuit breakers of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a locking device for a circuit breaker. Background Technique

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. The circuit breaker mechanism has the advantages of simple structure, convenient maintenance, stable performance, and reliable quality, and is widely used in the power grid. When overhauling a circuit, maintenance personnel need to first open the upper-level circuit breaker to cut off the current, and then overhaul the lower-level circuit breaker. If someone accidentally closes the circuit breaker, it may cause electric shock to the maintenance personnel and result in a personal safety accident.

[0003] A Chinese patent (authorized publication number: CN 220914144 U, authorized publication date: May 7, 2024) proposes a locking device for a circuit breaker. This patent uses a limit component and a protection component in cooperation to limit and fix the control switch of the circuit breaker, avoid danger caused by misoperation, and thus ensure safety.

[0004] However, this patent is only applicable to specific models of circuit breakers and requires the locking device to be installed in advance. When maintenance personnel carry out circuit maintenance operations, they often encounter various circuit breakers without the locking device installed. At this time, if direct maintenance operations are carried out, personal safety accidents may occur. In order to facilitate on-site installation and be applicable to different models of circuit breakers to ensure the personal safety of maintenance personnel, we propose a locking device for a circuit breaker. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a locking device for a circuit breaker, which can facilitate on-site installation and be applicable to different models of circuit breakers to ensure the personal safety of maintenance personnel.

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0007] A locking device for a circuit breaker, comprising a mounting plate, a connecting plate is fixedly connected to the left side of the mounting plate, two connecting columns are fixedly connected to the left side of the mounting plate, a second sleeve plate is slidably penetrated through the mounting plate, a first clamping plate is fixedly connected to the left side of the second sleeve plate, a first sleeve plate is fixedly connected to the right side of the first clamping plate, the first sleeve plate is slidably penetrated through the connecting plate, two sleeve columns are fixedly connected to the right side of the first clamping plate, the sleeve columns are slidably penetrated through the connecting columns, a gap is provided between the connecting plate and the connecting columns, an L-shaped slider is slidably connected between the connecting plate and the connecting columns, a baffle is fixedly connected to the bottom of the L-shaped slider, a circuit breaker is abutted between the mounting plate and the first clamping plate, a toggle switch is installed on the top of the circuit breaker, a positioning component for fixing the position of the baffle is installed on the mounting plate, and an adjusting component for adjusting the distance between the mounting plate and the first clamping plate is installed on the first clamping plate.

[0008] Preferably, the positioning component includes two positioning plates, the bottom of the positioning plate abuts against the top of the L-shaped slider, a lifting plate is fixedly connected to the top of the positioning plate, a connecting rod is fixedly connected to the top of the lifting plate, the connecting rod is slidably penetrated out of the mounting plate, a lifting block is fixedly connected to the top of the connecting rod, a lifting spring is fixedly connected to the top of the lifting plate, and the top of the lifting spring abuts against the bottom of the mounting plate.

[0009] Preferably, the adjusting component includes a mounting arm, the mounting arm is fixedly connected to the left side of the first clamping plate, a knob is rotatably connected to the left side of the mounting arm, a screw rod is fixedly connected to the right side of the knob, the screw rod is rotatably penetrated out of the mounting arm, a limiting plate is slidably connected to the bottom of the first clamping plate, a second clamping plate is fixedly connected to the bottom of the limiting plate, a threaded sleeve is fixedly connected to the left side of the second clamping plate, the screw rod is in threaded connection with the threaded sleeve, a telescopic spring is fixedly connected to the right end of the sleeve column, and the right end of the telescopic spring is fixedly connected to the connecting column.

[0010] Preferably, corresponding teeth are provided on the top of the L-shaped slider and the bottom of the positioning plate.

[0011] Preferably, long strip holes matching the connecting rod are provided on the top of the mounting plate and the second sleeve plate.

[0012] Preferably, a plug is fixedly connected to the bottom of the lifting block, and a slot matching the plug is provided on the top of the mounting plate and the second sleeve plate.

[0013] Preferably, an anti-slip rubber plate is provided on the left side of the mounting plate, and anti-slip rubber plates are provided on the right sides of the first clamping plate and the second clamping plate.

[0014] Beneficial effects

[0015] The utility model provides a locking device for a circuit breaker. Compared with the prior art, the following beneficial effects are achieved:

[0016] The locking device of the circuit breaker can adjust the positions of the first clamping plate and the second clamping plate relative to the mounting plate through an adjusting component, and clamp the circuit breaker through a telescopic spring. It is convenient to install and applicable to circuit breakers of different models. Then, a baffle is used to tightly press against the toggle switch and the position of the baffle is fixed through a positioning component to prevent maintenance personnel or other personnel from accidentally closing the switch during the maintenance process, ensuring the personal safety of the maintenance personnel. Brief Description of the Drawings

[0017] Figure 1 It is a front view structural schematic diagram of the main body of the present utility model;

[0018] Figure 2 It is a structural schematic diagram of the main body of the present utility model;

[0019] Figure 3 It is a structural schematic diagram of the main body of the present utility model;

[0020] Figure 4 It is a structural schematic diagram of the main body of the present utility model.

[0021] In the figure: 1, mounting plate; 2, first clamping plate; 3, second clamping plate; 4, mounting arm; 5, connecting plate; 6, connecting column; 7, lifting block; 8, lifting plate; 9, toggle switch; 10, circuit breaker; 11, knob; 12, screw; 13, threaded sleeve; 14, limiting plate; 15, sleeve column; 16, telescopic spring; 17, first sleeve plate; 18, second sleeve plate; 19, baffle; 20, connecting rod; 21, lifting spring; 22, L-shaped slider; 23, positioning plate; 24, inserting block. Specific Embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4, the present utility model provides a technical solution: a locking device for a circuit breaker, including a mounting plate 1, a connecting plate 5 is fixedly connected to the left side of the mounting plate 1, two connecting columns 6 are fixedly connected to the left side of the mounting plate 1, a second sleeve plate 18 is slidably penetrated through the mounting plate 1, a first clamping plate 2 is fixedly connected to the left side of the second sleeve plate 18, a first sleeve plate 17 is fixedly connected to the right side of the first clamping plate 2, the first sleeve plate 17 is slidably penetrated through the connecting plate 5, two sleeve columns 15 are fixedly connected to the right side of the first clamping plate 2, the sleeve columns 15 are slidably penetrated through the connecting columns 6, a gap is provided between the connecting plate 5 and the connecting columns 6, an L-shaped slider 22 is slidably connected between the connecting plate 5 and the connecting columns 6, a baffle 19 is fixedly connected to the bottom of the L-shaped slider 22, a circuit breaker 10 is abutted between the mounting plate 1 and the first clamping plate 2, a toggle switch 9 is installed on the top of the circuit breaker 10, a positioning component for fixing the position of the baffle 19 is installed on the mounting plate 1, and an adjusting component for adjusting the distance between the mounting plate 1 and the first clamping plate 2 is installed on the first clamping plate 2.

[0024] When the device is in use, first, the toggle switch 9 on the circuit breaker 10 is toggled to the open position, then the distance between the mounting plate 1 and the first clamping plate 2 is adjusted through the adjusting component so that the mounting plate 1 and the first clamping plate 2 can clamp the circuit breaker 10. Then, the L-shaped slider 22 is slid to drive the baffle 19 to move so that the baffle 19 abuts tightly against the toggle switch 9. Then, the position of the baffle 19 is fixed through the positioning component, thereby preventing maintenance personnel or other personnel from accidentally closing the switch and causing personal safety accidents.

[0025] The positioning component includes two positioning plates 23. The bottom of the positioning plate 23 abuts against the top of the L-shaped slider 22. A lifting plate 8 is fixedly connected to the top of the positioning plate 23. A connecting rod 20 is fixedly connected to the top of the lifting plate 8. The connecting rod 20 is slidably penetrated out of the mounting plate 1. A lifting block 7 is fixedly connected to the top of the connecting rod 20. A lifting spring 21 is fixedly connected to the top of the lifting plate 8. The top of the lifting spring 21 abuts against the bottom of the mounting plate 1.

[0026] Corresponding teeth are provided on the top of the L-shaped slider 22 and the bottom of the positioning plate 23.

[0027] Long holes matching the connecting rod 20 are opened at the tops of the mounting plate 1 and the second sleeve plate 18.

[0028] An insertion block 24 is fixedly connected to the bottom of the lifting block 7. Slots matching the insertion block 24 are opened at the tops of the mounting plate 1 and the second sleeve plate 18.

[0029] The operator pulls up the lifting block 7, drives the lifting plate 8 to rise through the connecting rod 20, and drives the positioning plate 23 to rise. Then, the L-shaped slider 22 and the baffle 19 can move freely. After moving the baffle 19 to a suitable position to make it abut against the toggle switch 9, pull the lifting block 7 to make the connecting rod 20 slide along the long holes opened on the mounting plate 1 and the second sleeve plate 18, drive the positioning plate 23 to move above the L-shaped slider 22, then release the lifting block 7, and align the plug block 24 at the bottom of the lifting block 7 with the slot at the top of the mounting plate 1 and the second sleeve plate 18. Under the action of the lifting spring 21, the positioning plate 23 descends, and the teeth at the bottom of the positioning plate 23 are tightly engaged with the teeth at the top of the L-shaped slider 22. At the same time, the lifting block 7 descends, and the plug block 24 is inserted into the slot, so that the baffle 19 is fixed.

[0030] The adjusting assembly includes a mounting arm 4. The mounting arm 4 is fixedly connected to the left side of the first clamping plate 2. A knob 11 is rotatably connected to the left side of the mounting arm 4. A screw rod 12 is fixedly connected to the right side of the knob 11. The screw rod 12 rotatably passes through the mounting arm 4. A limiting plate 14 is slidably connected to the bottom of the first clamping plate 2. A second clamping plate 3 is fixedly connected to the bottom of the limiting plate 14. A threaded sleeve 13 is fixedly connected to the left side of the second clamping plate 3. The screw rod 12 is threadedly connected to the threaded sleeve 13. The right end of the sleeve column 15 is fixedly connected to a telescopic spring 16. The right end of the telescopic spring 16 is fixedly connected to the connecting column 6.

[0031] When installing this device, if the length of the circuit breaker is greater than the length of the mounting plate 1, pull the first clamping plate 2 and the second clamping plate 3 in the direction away from the mounting plate 1. If the length of the circuit breaker is less than the length of the mounting plate 1, rotate the knob 11 to drive the screw rod 12 to rotate, so that the second clamping plate 3 moves away from the mounting arm 4. After placing the circuit breaker between the mounting plate 1 and the second clamping plate 3, the mounting plate 1 and the second clamping plate 3 clamp the circuit breaker through the telescopic spring 16.

[0032] A non-slip rubber plate is arranged on the left side of the mounting plate 1, and non-slip rubber plates are arranged on the right sides of the first clamping plate 2 and the second clamping plate 3.

[0033] Prevent slipping and make the clamping more firm.

[0034] Working principle: When this device is in use, first switch the toggle switch 9 on the circuit breaker 10 to the off position. If the length of the circuit breaker 10 is greater than that of the mounting plate 1, pull the first clamping plate 2 and the second clamping plate 3 away from the mounting plate 1. If the length of the circuit breaker 10 is less than that of the mounting plate 1, rotate the knob 11 to drive the screw 12 to rotate, so that the second clamping plate 3 moves away from the mounting arm 4, which can be applicable to various different models of circuit breakers 10. After placing the circuit breaker 10 between the mounting plate 1 and the second clamping plate 3, the mounting plate 1 and the second clamping plate 3 clamp the circuit breaker 10 through the telescopic spring 16. Then, pull up the lifting block 7, drive the lifting plate 8 to rise through the connecting rod 20, and drive the positioning plate 23 to rise, so that the L-shaped slider 22 and the baffle 19 can move freely. After moving the baffle 19 to a suitable position to make it abut against the toggle switch 9, pull the lifting block 7 to make the connecting rod 20 slide along the long holes opened on the mounting plate 1 and the second sleeve plate 18, drive the positioning plate 23 to move above the L-shaped slider 22, then release the lifting block 7, and align the plug block 24 at the bottom of the lifting block 7 with the slots at the tops of the mounting plate 1 and the second sleeve plate 18. Under the action of the lifting spring 21, the positioning plate 23 descends, and the teeth at the bottom of the positioning plate 23 are clamped with the teeth at the top of the L-shaped slider 22. At the same time, the lifting block 7 descends, and the plug block 24 is inserted into the slot, so that the baffle 19 is fixed and the toggle switch 9 cannot be toggled anymore, thus preventing maintenance personnel or other personnel from accidentally operating the switch to the on position during the maintenance process and ensuring the personal safety of the maintenance personnel.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A locking device for a circuit breaker, comprising a mounting plate (1), characterized in that: A connecting plate (5) is fixedly connected to the left side of the mounting plate (1). Two connecting columns (6) are fixedly connected to the left side of the mounting plate (1). A second sleeve plate (18) is slidably penetrated through the mounting plate (1). A first clamping plate (2) is fixedly connected to the left side of the second sleeve plate (18). A first sleeve plate (17) is fixedly connected to the right side of the first clamping plate (2). The first sleeve plate (17) is slidably penetrated through the connecting plate (5). Two sleeve columns (15) are fixedly connected to the right side of the first clamping plate (2). The sleeve columns (15) are slidably penetrated through the connecting columns (6). A gap is provided between the connecting plate (5) and the connecting columns (6). An L-shaped slider (22) is slidably connected between the connecting plate (5) and the connecting columns (6). A baffle (19) is fixedly connected to the bottom of the L-shaped slider (22). A circuit breaker (10) is abutted between the mounting plate (1) and the first clamping plate (2). A toggle switch (9) is installed on the top of the circuit breaker (10). A positioning component for fixing the position of the baffle (19) is installed on the mounting plate (1). An adjusting component for adjusting the distance between the mounting plate (1) and the first clamping plate (2) is installed on the first clamping plate (2).

2. The latching device of a circuit breaker according to claim 1, characterized in that: The positioning component includes two positioning plates (23). The bottom of the positioning plate (23) is abutted against the top of the L-shaped slider (22). A lifting plate (8) is fixedly connected to the top of the positioning plate (23). A connecting rod (20) is fixedly connected to the top of the lifting plate (8). The connecting rod (20) is slidably penetrated out of the mounting plate (1). A lifting block (7) is fixedly connected to the top of the connecting rod (20). A lifting spring (21) is fixedly connected to the top of the lifting plate (8). The top of the lifting spring (21) is abutted against the bottom of the mounting plate (1).

3. The latching device of a circuit breaker according to claim 2, characterized in that: The adjusting component includes a mounting arm (4). The mounting arm (4) is fixedly connected to the left side of the first clamping plate (2). A knob (11) is rotatably connected to the left side of the mounting arm (4). A screw rod (12) is fixedly connected to the right side of the knob (11). The screw rod (12) is rotatably penetrated out of the mounting arm (4). A limiting plate (14) is slidably connected to the bottom of the first clamping plate (2). A second clamping plate (3) is fixedly connected to the bottom of the limiting plate (14). A threaded sleeve (13) is fixedly connected to the left side of the second clamping plate (3). The screw rod (12) is threadedly connected to the threaded sleeve (13). A telescopic spring (16) is fixedly connected to the right end of the sleeve column (15). The right end of the telescopic spring (16) is fixedly connected to the connecting column (6).

4. The latching device of a circuit breaker according to claim 3, characterized in that: Corresponding teeth are provided on the top of the L-shaped slider (22) and the bottom of the positioning plate (23).

5. The locking device of a circuit breaker according to claim 4, characterized in that: Long strip holes matching the connecting rod (20) are provided on the tops of the mounting plate (1) and the second sleeve plate (18).

6. The latching device of a circuit breaker according to claim 5, characterized in that: An inserting block (24) is fixedly connected to the bottom of the lifting block (7). Slots matching the inserting block (24) are provided on the tops of the mounting plate (1) and the second sleeve plate (18).

7. A locking device for a circuit breaker according to claim 5, characterized in that: An anti-slip rubber plate is provided on the left side of the mounting plate (1). Anti-slip rubber plates are provided on the right sides of the first clamping plate (2) and the second clamping plate (3).

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