A safety isolation mechanism of a miniaturized switch cabinet

Abstract

The utility model relates to the field of miniaturization switch cabinet, concretely relates to a kind of safety isolation mechanism of miniaturization switch cabinet, including isolation rack, main body for the installation of isolation mechanism in miniaturization switch cabinet, isolation operating panel, fixedly installed in the inside of isolation rack, for the fixed installation indicating lamp outside, and the inside fixed installation of isolation rack has mounting bracket, the outside fixed installation of mounting bracket has isolating switch frame, the top of isolating switch frame is all fixedly installed with first switch breakpoint.The utility model is provided with indicating lamp, rotating rod, break contact, connecting switch, rotating disc, pusher, vacuum circuit breaker, fixed plate and resist contact push rod, when using the safety isolation mechanism of this miniaturization switch cabinet, first rotating rod can drive break contact to rotate on isolating switch frame, so that the connecting switch of break contact below and the second contact connecting rod on second switch breakpoint change from contact state to break, and there is obvious gap.

Description

Technical Field

[0001] This utility model relates to the field of miniaturized switchgear, specifically to a safety isolation mechanism for miniaturized switchgear. Background Technology

[0002] Miniaturized switchgear is a type of switchgear that significantly reduces its size while ensuring electrical performance and safety through optimized design and advanced technology. Miniaturized switchgear is commonly used in hospitals, data centers, airports, etc. Its dual power supply backup design ensures power supply continuity. The safety isolation mechanism of miniaturized switchgear is the core component used to achieve circuit safety isolation. It disconnects the circuit by mechanical or electrical means to prevent accidents such as electric shock and short circuit. In miniaturized switchgear, the safety isolation mechanism needs to form a clear gap during maintenance to ensure the safety of operators.

[0003] The existing safety isolation mechanisms of miniaturized switchgear lack double isolation and clear indication functions after isolation. This can lead to the vacuum circuit breaker accidentally lifting into the circuit state, posing a safety hazard to operators. Furthermore, the lack of a feedback mechanism makes it impossible for operators to intuitively determine whether the safety isolation operation has been successfully completed. As a result, the operation of the safety isolation mechanism of this miniaturized switchgear is highly risky in the long run, making it difficult to guarantee the quality and safety of the safety isolation operation.

[0004] Therefore, it is necessary to invent a safety isolation mechanism for miniaturized switchgear to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a safety isolation mechanism for a miniaturized switchgear. It achieves dual isolation protection through indicator lights, a rotating rod, a disconnecting contact point, a connecting lever, a rotating disk, a push frame, a vacuum circuit breaker, a fixing plate, and a contact push rod. This reduces the risk of dangerous accidents such as short circuits and electric arcs during operation, providing more reliable protection for the personal safety of operators. Furthermore, the indicator light feedback provides operators with intuitive feedback on the operation results. Over long-term use, this miniaturized switchgear safety isolation mechanism provides operators with a clear, intuitive, and reliable effect of mechanical and electrical isolation. This addresses the problem in existing miniaturized switchgear safety isolation mechanisms where the lack of dual isolation and clear indication after isolation can lead to the vacuum circuit breaker tripping into a closed state due to unexpected circumstances, causing safety hazards for operators. Moreover, the lack of a feedback mechanism makes it impossible for operators to intuitively judge whether the safety isolation operation has been successfully completed, resulting in high operational risks and difficulty in guaranteeing the quality and safety of safety isolation operations over long-term use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety isolation mechanism for a miniaturized switchgear, including an isolation frame and a main body for installing the isolation mechanism in a miniaturized switchgear;

[0007] An isolation control panel is fixedly installed inside the isolation frame for externally fixed installation of indicator lights. An installation bracket is fixedly installed inside the isolation frame, and an isolation switch bracket is fixedly installed outside the installation bracket. A first switch break is fixedly installed on the top of each isolation switch bracket, and a first contact connecting rod is threadedly connected above the first switch break. A second switch break is fixedly installed on the bottom of each isolation switch bracket, and a second contact connecting rod is threadedly connected above the second switch break.

[0008] A rotating rod is rotatably connected inside the disconnector frame and is used for externally fixed installation of the disconnect contact point. Connecting levers are fixedly installed above and below the disconnect contact point. A rotating disk is fixedly installed at the front end of the rotating rod, and a pusher frame is fixedly installed on the outside of the rotating disk.

[0009] The lower control board is fixedly installed below the isolation frame and is used for external bolt connection of a vacuum circuit breaker. A fixing plate is fixedly installed on the outside of the lower control board, and an abutment push rod is slidably connected inside the fixing plate. A push block is fixedly installed at the top of the abutment push rod.

[0010] Preferably, both the first switch break and the second switch break are fixedly connected to the isolating switch frame, and the mounting frame and the isolating switch frame are integrated into a single structure.

[0011] Preferably, a pull rod is slidably connected inside the isolation operation panel, a handle is fixedly installed at the front end of the pull rod, a limit groove is formed on the outside of the pull rod, and a limit clamp is sleeved on the outside of the limit groove.

[0012] Preferably, the disconnect contact point is rotatably connected to the isolating switch frame, and the rear end of the pull rod is hinged to the push frame.

[0013] Preferably, an external locking frame is fixedly installed on the outside of the isolation operation plate, and a locking screw is fixedly installed inside the external locking frame. A hexagonal nut is threaded onto the outside of the locking screw.

[0014] Preferably, the outside of the push block is slidably connected to the locking screw, and the push block is configured with a "T" shaped structure.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This utility model includes an indicator light, a rotating rod, a disconnect contact point, a connecting lever, a rotating disk, a push frame, a vacuum circuit breaker, a fixing plate, and a contact push rod. When using the safety isolation mechanism of this miniaturized switchgear, the rotating rod first rotates the disconnect contact point on the isolating switch frame, causing the connecting lever below the disconnect contact point to disconnect from the second contact connecting rod on the second switch disconnect point, with a clear gap. Then, the push block is pulled to make the contact push rod press down on the vacuum circuit breaker switch, preventing the vacuum circuit breaker from tripping into a short-circuit state. This extinguishes the indicator light on the isolation operation panel, providing a safe isolation area during the operation of the miniaturized switchgear. This design achieves dual isolation protection, reducing the risk of dangerous accidents such as short circuits and arcing during operation, and providing more reliable protection for the personal safety of operators. In addition, the indicator light feedback provides operators with intuitive feedback on the operation results. With long-term use, the safety isolation mechanism of this miniaturized switchgear provides operators with a clear, intuitive, and reliable mechanical and electrical isolation status. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disconnector frame structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the break contact point structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the pull rod structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the vacuum circuit breaker structure of this utility model;

[0023] Figure 6 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Isolation frame; 2. Isolation operation panel; 3. Indicator light; 4. Mounting bracket; 5. Isolation switch bracket; 6. First switch break point; 7. First contact connecting rod; 8. Second switch break point; 9. Second contact connecting rod; 10. Rotating rod; 11. Break contact point; 12. Connecting lever; 13. Rotating disc; 14. Push frame; 15. Pull rod; 16. Handle; 17. Limit slot; 18. Limit clamp; 19. Lower control panel; 20. Vacuum circuit breaker; 21. Fixing plate; 22. Abutment push rod; 23. Push block; 24. External locking frame; 25. Locking screw; 26. Hexagonal nut. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-6 The safety isolation mechanism of a miniaturized switchgear shown includes an isolation frame 1, which is the main body for installing the isolation mechanism in the miniaturized switchgear;

[0028] An isolation operation panel 2 is fixedly installed inside the isolation frame 1 for externally fixed installation of indicator lights 3. An installation frame 4 is fixedly installed inside the isolation frame 1. An isolation switch frame 5 is fixedly installed outside the installation frame 4. A first switch break 6 is fixedly installed above each isolation switch frame 5. A first contact connecting rod 7 is threadedly connected above the first switch break 6. A second switch break 8 is fixedly installed below each isolation switch frame 5. A second contact connecting rod 9 is threadedly connected above the second switch break 8.

[0029] Rotating rod 10 is rotatably connected to the inside of the disconnecting switch frame 5 and is used for external fixed installation of disconnecting contact point 11. Connecting lever 12 is fixedly installed above and below disconnecting contact point 11. Rotating disk 13 is fixedly installed at the front end of rotating rod 10, and pushing frame 14 is fixedly installed on the outside of rotating disk 13.

[0030] The lower control board 19 is fixedly installed below the isolation frame 1. It is used for external bolt connection of the vacuum circuit breaker 20. The lower control board 19 is externally fixedly installed with a fixing plate 21. The fixing plate 21 is internally slidably connected with an abutment push rod 22. A push block 23 is fixedly installed at the top of the abutment push rod 22. Pulling the push block 23 causes the abutment push rod 22 to press down the switch of the vacuum circuit breaker 20, so that the vacuum circuit breaker 20 cannot be lifted to enter the short circuit state. In this way, the indicator light 3 on the isolation operation board 2 will be turned off, providing a safe isolation area when operating the miniaturized switch cabinet.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, both the first switch break point 6 and the second switch break point 8 are fixedly connected to the isolating switch frame 5. The mounting frame 4 and the isolating switch frame 5 are integrated into one structure. Both the first switch break point 6 and the second switch break point 8 are connected to the break contact point 11 through the connecting lever 12, the first contact connecting rod 7, and the second contact connecting rod 9, thereby ensuring the continuity of the miniaturized switch cabinet. The isolating operation plate 2 has a sliding connection of a pull rod 15 inside. A handle 16 is fixedly installed at the front end of the pull rod 15. Limit grooves 17 are opened on the outside of the pull rod 15, and a limit is fitted on the outside of the limit grooves 17. The clamp 18, after the rotating disk 13 is rotated by the pull rod 15, can be locked in the limit groove 17 on the pull rod 15 to lock the pull rod 15, thereby ensuring the short circuit state. The disconnect contact point 11 is rotatably connected to the isolating switch frame 5. The rear end of the pull rod 15 is hinged to the push frame 14. The rotating rod 10 drives the disconnect contact point 11 to rotate on the isolating switch frame 5, so that the connecting plate 12 below the disconnect contact point 11 and the second contact connecting rod 9 on the second switch disconnect point 8 change from contact to disconnection, with a clear gap.

[0032] like Figure 1 , Figure 4 and Figure 5 As shown, an external locking frame 24 is fixedly installed on the outside of the isolation operation plate 2, and a locking screw 25 is fixedly installed inside the external locking frame 24. A hexagonal nut 26 is threadedly connected to the outside of the locking screw 25. When the push block 23 is pressed down to abut the push rod 22, the push block 23 also slides on the locking screw 25 simultaneously. The upper and lower hexagonal nuts 26 can be twisted to fix the current position of the push block 23, thereby also self-locking the push rod 22. The outside of the push block 23 is slidably connected to the locking screw 25. The push block 23 is set with a "T" shaped structure. The overall structure of the push block 23 is simple and easy to operate. If a fault occurs, it is convenient for maintenance personnel to perform timely maintenance.

[0033] The working principle of this utility model is as follows: First, the safety isolation mechanism of the miniaturized switchgear is installed in the miniaturized switchgear. Then, the external power supply is connected. When maintaining the miniaturized switchgear, the safety isolation mechanism can be operated. First, the pull rod 15 is pulled outside the isolation operation plate 2 by the handle 16. Then, since the end of the pull rod 15 is hinged to the push frame 14, as the pull rod 15 is pulled, the push frame 14 drives the rotating disk 13 to rotate. In this way, the rotating rod 10 drives the disconnection contact point 11 to disconnect the switch. Rotating on the frame 5 causes the connecting tab 12 below the break contact point 11 to disconnect from the second contact connecting rod 9 on the second switch break point 8, with a noticeable gap. The distance the pull rod 15 has already pulled out can be limited and self-locked by engaging the limit clamp 18 at the limit groove 17 on the pull rod 15, thus ensuring a short circuit. Then, pulling the push block 23 causes the push rod 22 to press down on the vacuum circuit breaker 20, causing the vacuum circuit breaker 20... Unable to be lifted into a short-circuit state, when the push block 23 presses down against the push rod 22, the push block 23 also slides synchronously on the locking screw 25. The upper and lower hexagonal nuts 26 can be turned to fix the current position of the push block 23, thereby also locking the position of the push rod 22. In this way, the indicator light 3 on the isolation operation panel 2 will turn off, providing a safe isolation area for the operation of the miniaturized switchgear. This design achieves double isolation protection, reducing the risk of dangerous accidents such as short circuits and electric arcs during operation, and providing more reliable protection for the personal safety of operators. Moreover, with the feedback of the indicator light 3, it also provides operators with intuitive feedback on the operation results. At this time, the operator can normally perform circuit repairs or install components inside the miniaturized switchgear. Finally, after completing the installation and use of the safety isolation mechanism of the miniaturized switchgear according to the above operations, the device should be maintained daily. If it is not used for a long time, the external power supply should be disconnected. In this way, the use of the safety isolation mechanism of the miniaturized switchgear is completed.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A safety isolation mechanism for a miniaturized switchgear, characterized in that: include Isolation rack (1), the main body for installing the isolation mechanism in a miniaturized switchgear; An isolation operation panel (2) is fixedly installed inside the isolation frame (1) for externally fixed installation of indicator lights (3). An installation frame (4) is fixedly installed inside the isolation frame (1). An isolation switch frame (5) is fixedly installed outside the installation frame (4). A first switch break (6) is fixedly installed above the isolation switch frame (5). A first contact connecting rod (7) is threadedly connected above the first switch break (6). A second switch break (8) is fixedly installed below the isolation switch frame (5). A second contact connecting rod (9) is threadedly connected above the second switch break (8). A rotating rod (10) is rotatably connected to the inside of the disconnector frame (5) for external fixed installation of a disconnect contact point (11), and connecting paddles (12) are fixedly installed above and below the disconnect contact point (11). A rotating disk (13) is fixedly installed at the front end of the rotating rod (10), and a pusher frame (14) is fixedly installed on the outside of the rotating disk (13). The lower control plate (19) is fixedly installed below the isolation frame (1) for external bolt connection of a vacuum circuit breaker (20), and a fixing plate (21) is fixedly installed on the outside of the lower control plate (19). An abutment push rod (22) is slidably connected inside the fixing plate (21), and a push block (23) is fixedly installed at the top of the abutment push rod (22).

2. The safety isolation mechanism for a miniaturized switchgear according to claim 1, characterized in that: The first switch break (6) and the second switch break (8) are both fixedly connected to the isolating switch frame (5), and the mounting frame (4) and the isolating switch frame (5) are integrated into one structure.

3. The safety isolation mechanism for a miniaturized switchgear according to claim 1, characterized in that: The isolation operation plate (2) is internally slidably connected to a pull rod (15), and a handle (16) is fixedly installed at the front end of the pull rod (15). Limiting grooves (17) are opened on the outside of the pull rod (15), and limiting clips (18) are sleeved on the outside of the limiting grooves (17).

4. The safety isolation mechanism for a miniaturized switchgear according to claim 3, characterized in that: The disconnection contact point (11) is rotatably connected to the isolating switch frame (5), and the rear end of the pull rod (15) is hinged to the push frame (14).

5. The safety isolation mechanism for a miniaturized switchgear according to claim 1, characterized in that: An external locking frame (24) is fixedly installed on the outside of the isolation operation plate (2), and a locking screw (25) is fixedly installed inside the external locking frame (24). A hexagonal nut (26) is threaded onto the outside of the locking screw (25).

6. The safety isolation mechanism of a miniaturized switchgear according to claim 5, characterized in that: The push block (23) is slidably connected to the locking screw (25), and the push block (23) is configured with a "T" shaped structure.

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