Power supply three-interlocking device

Abstract

The utility model discloses a power supply three-interlocking device, which relates to the technical field of switch cabinets, and comprises a cabinet body, a cabinet door and a baffle plate, the front end of the cabinet body is provided with a cabinet cabin, the cabinet door is matched with the cabinet cabin, the cabinet door is hinged to the front end of the cabinet body, one side of the baffle plate is fixedly connected with a shaft rod, one end of the shaft rod is fixedly connected with a clamping plate, and the other end of the shaft rod is fixedly connected with the baffle plate. According to the power supply three-interlocking device, the clamping plate is installed on the baffle plate, and the baffle plate is installed in the switch cabinet, so that when the power supply three-interlocking device is operated to be closed, the baffle plate can drive the clamping plate to be in contact with the baffle plate in a matched mode, and the power supply three-interlocking device is operated to be closed. Therefore, the cabinet door can be automatically locked without manual operation when the power supply three-interlocking device is operated, otherwise, the cabinet door is in an unlocked state, and the structure does not need secondary operation of the cabinet door, so that the operation steps of locking the switch cabinet are effectively reduced, and the operation convenience of the switch cabinet is improved.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, specifically a power supply three-interlock device. Background Technology

[0002] During the inspection and maintenance of high-voltage switchgear, operations such as opening, disconnecting, and closing the power circuit breaker, grounding switch, and circuit breaker cabinet door lock are involved. To prevent dangerous accidents such as electric shock and abnormal power supply caused by misoperation or non-standard operation, three independent safety locks are required on the power circuit breaker, grounding switch, and circuit breaker cabinet door lock during inspection and maintenance. However, in actual use, operators often fail to lock all three independent locks as required, leading to safety accidents. To avoid such situations, a power three-lock interlock device is installed. This device uses an additional baffle structure to allow one lock to simultaneously lock the power circuit breaker, grounding switch, and circuit breaker cabinet door lock, thereby improving inspection and maintenance efficiency and significantly reducing the occurrence of safety accidents.

[0003] However, this device requires closing the high-voltage switch cabinet door, locking the door, and operating the power supply interlocking device. This adds to the operating steps, and often the cabinet door is forgotten to be locked due to operating the power supply interlocking device, which can lead to safety accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a power supply three-lock device to solve the problem in the prior art that the current switch cabinet requires locking the cabinet door and operating the power supply three-lock device, which leads to troublesome operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a power supply three-locking device, comprising a cabinet, a cabinet door, and a baffle. A cabinet compartment is provided at the front end of the cabinet. The cabinet door is adapted to the cabinet compartment and is hinged to the front end of the cabinet. A shaft is fixedly connected to one side of the baffle, and a retaining plate is fixedly connected to one end of the shaft. The retaining plate is located on the side of the cabinet door closest to the cabinet. The shaft is rotatably connected to a rotating hole on one side of the cabinet door. The baffle and retaining plate are located on opposite sides of the cabinet door. A baffle plate is installed on the inner wall of the cabinet compartment. The baffle plate has an L-shaped horizontal cross-section and is in contact with the movable end of the retaining plate. The baffle plate is located between the retaining plate and the cabinet door.

[0006] Preferably, a power circuit breaker is installed inside the cabinet cavity, and a second rotating operating lever for switching the power circuit breaker is provided at the front end of the power circuit breaker. A through-hole is provided at the corresponding position of the lock hole of the second rotating operating lever on the cabinet door.

[0007] Preferably, a grounding switch is provided inside the cabinet, and a first rotating operating rod for controlling whether the grounding switch is in a grounded state is installed in the mounting groove opened at the front end of the cabinet. The first rotating operating rod is located at the opening of the mounting groove, and the mounting groove is located below the cabinet door.

[0008] Preferably, the movable end of the baffle is fixedly connected to a first latch, and the front end of the cabinet door is provided with a second latch and an elastic structure. The second latch is located at the lower left corner of the cabinet door, and the elastic structure is located at the upper right corner of the cabinet door. A safety lock is provided between the first latch and the second latch. The front end of the elastic structure has three through holes, and screws are inserted into the through holes. The cabinet door has a threaded groove at the corresponding position of the through holes, and the movable end of the screw is threadedly connected to the threaded groove.

[0009] Preferably, a linear array of stabilizing blocks is fixedly connected to the front end of the cabinet, and a stabilizing hole is provided at the corresponding position of the cabinet door relative to the stabilizing block, and the stabilizing hole is plugged into the stabilizing block.

[0010] Preferably, a long rod is fixedly connected to the front end of the baffle, and a handle is rotatably sleeved on the outside of the long rod.

[0011] Preferably, the cabinet door has a sealing rod at the front end, and the baffle is fixedly connected to an abutment rod that contacts the sealing rod on one side of the cabinet door. The abutment rod is located above the sealing rod and contacts the surface wall of the cabinet door. The sealing rod is located above the socket, and the abutment rod is formed by bending the baffle.

[0012] Preferably, a connecting plate is fixedly connected to the front end of the baffle, and a connecting block is installed at the front end of the cabinet door. The connecting block is located on one side of the baffle and has a connecting groove that is slidably connected to the connecting plate. The connecting plate is formed by bending the baffle.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application installs a card plate on the baffle and a stop plate inside the switch cabinet. When the power supply three-lock device is closed, the baffle will also drive the card plate to make contact with the stop plate. Therefore, the cabinet door will automatically lock while the power supply three-lock device is being operated, without the need for manual operation. Conversely, the cabinet door will be left unlocked. This structure eliminates the need for secondary operation of the cabinet door, thus effectively reducing the number of steps required to lock the switch cabinet and improving the ease of operation of the switch cabinet.

[0015] 2. By setting a sealing plate and a connecting block, this application can increase the sealing between the baffle and the cabinet door when the baffle is in the locked state, preventing dust and other impurities from falling into the protected area of ​​the baffle. At the same time, the connecting block can also increase the stability of the baffle and prevent the edges of the baffle from tilting or bending due to external forces, thereby exposing the locked area of ​​the baffle. Therefore, it can effectively improve the sealing and safety of the power supply three-lock device. Attached Figure Description

[0016] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the entire power supply three-interlock device of this utility model;

[0017] Figure 2 This is a side perspective three-dimensional schematic diagram of the entire power supply three-interlock device of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the cabinet door of a power supply three-interlock device according to this utility model;

[0019] Figure 4 This is a side perspective three-dimensional schematic diagram of the baffle of a power supply three-interlock device according to the present invention;

[0020] Figure 5 This is a frontal perspective three-dimensional schematic diagram of the baffle of a power supply three-interlock device according to the present invention.

[0021] The following are the labels in the diagram: 1. First rotating operating lever; 2. Stabilizing block; 3. Cabinet body; 4. Second rotating operating lever; 5. Cabinet door; 6. Safety lock; 7. First latch; 8. Second latch; 9. Shaft; 10. Baffle; 11. Screw; 12. Elastic structure; 13. Clamping plate; 14. Cabinet compartment; 15. Socket; 16. Bar; 17. Handle; 18. Sealing rod; 19. Abutment rod; 20. Connecting plate; 21. Connecting block; 22. Connecting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figure 1 - Figure 5As shown, this utility model provides a technical solution for a power supply three-lock device, including a cabinet body 3, a cabinet door 5, and a baffle 10. A cabinet compartment 14 is provided at the front end of the cabinet body 3. The cabinet door 5 is adapted to the cabinet compartment 14 and is hinged to the front end of the cabinet body 3. A shaft 9 is fixedly connected to one side of the baffle 10, and a clamping plate 13 is fixedly connected to one end of the shaft 9. The clamping plate 13 is located on the side of the cabinet door 5 near the cabinet body 3. The shaft 9 is rotatably connected to a rotating hole on one side of the cabinet door 5. The baffle 10 and the clamping plate 13 are located on both sides of the cabinet door 5. A baffle 16 is installed on the inner wall of the cabinet compartment 14. The horizontal cross-section of the baffle 16 is L-shaped. The baffle 16 is in contact with the movable end of the clamping plate 13, and the baffle 16 is located between the clamping plate 13 and the cabinet door 5.

[0024] like Figure 1 and Figure 2 As shown, a power circuit breaker is installed inside the cavity of the cabinet 14. A second rotating operating lever 4 for switching the power circuit breaker is provided at the front end of the power circuit breaker. A through-hole 15 is provided at the corresponding position of the lock hole of the second rotating operating lever 4 on the cabinet door 5.

[0025] like Figure 1 and Figure 2 As shown, a grounding switch is installed inside the cabinet 3. A first rotating operating lever 1 is installed in the mounting slot at the front end of the cabinet 3 to control whether the grounding switch is in a grounded state. The first rotating operating lever 1 is located at the opening of the mounting slot, which is located below the cabinet door 5.

[0026] like Figure 1 - Figure 3 As shown, the movable end of the baffle 10 is fixedly connected to the first latch 7, the front end of the cabinet door 5 is provided with the second latch 8 and the elastic structure 12, the second latch 8 is located at the lower left corner of the cabinet door 5, the elastic structure 12 is located at the upper right corner of the cabinet door 5, a safety lock 6 is provided between the first latch 7 and the second latch 8, the front end of the elastic structure 12 has three through holes, and screws 11 are inserted into the through holes. The cabinet door 5 has a threaded groove at the corresponding position of the through holes, and the movable end of the screw 11 is threadedly connected to the threaded groove.

[0027] like Figure 1 - Figure 3 As shown, a linear array of stabilizing blocks 2 is fixedly connected to the front end of the cabinet body 3. Stabilizing holes are opened at the corresponding positions of the cabinet door 5 relative to the stabilizing blocks 2, and the stabilizing holes are plugged into the stabilizing blocks 2.

[0028] like Figure 5 As shown, a long rod is fixedly connected to the front end of the baffle 10, and a handle 17 is rotatably sleeved on the outside of the long rod;

[0029] The baffle 10 can be easily operated using the grip 17.

[0030] like Figure 3 - Figure 5As shown, the front end of the cabinet door 5 has a sealing rod 18. The baffle 10 is located on one side of the cabinet door 5 and is fixedly connected to an abutment rod 19 that contacts the sealing rod 18. The abutment rod 19 is located above the sealing rod 18 and contacts the surface wall of the cabinet door 5. The sealing rod 18 is located above the socket 15. The abutment rod 19 is formed by bending through the baffle 10.

[0031] like Figure 3 - Figure 5 As shown, a connecting plate 20 is fixedly connected to the front end of the baffle 10, and a connecting block 21 is installed at the front end of the cabinet door 5. The connecting block 21 is located on one side of the baffle 10 and has a connecting groove 22 that is slidably connected to the connecting plate 20. The connecting plate 20 is formed by bending the baffle 10.

[0032] Working principle:

[0033] The first step is to use the special handle to rotate the second rotating operating lever 4 counterclockwise to back the machine, so that the power circuit breaker of the cabinet 3 is in the off state.

[0034] Step 2: After the power circuit breaker of cabinet 3 is disconnected, use the special handle to rotate the first rotating operating lever 1 clockwise so that the grounding switch of cabinet 3 is in the grounding state, ensuring the safe grounding of the entire system.

[0035] Step 3: Move the baffle 10 to a horizontal position so that the first latch 7 and the second latch 8 come into contact. Then, use the safety lock 6 to lock the first latch 7 and the second latch 8 to complete the locking operation and achieve energy isolation. At this time, the baffle 10 drives the card plate 13 to move to the stop plate 16 and come into contact with the stop plate 16. At this time, the stop plate 16 is located between the baffle 10 and the cabinet door 5, thus locking the cabinet door 5. At the same time, the sealing rod 18 and the abutment rod 19 on the baffle 10 come into parallel contact with each other, thereby increasing the sealing between the baffle 10 and the cabinet door 5. At the same time, the connecting plate 20 will be inserted into the cavity of the connecting groove 22, thereby using the connecting block 21 to lock the movable end of the baffle 10.

[0036] Step 5: After the inspection and maintenance are completed, move the baffle 10 to a vertical position and fix the baffle 10 by the elastic structure 12.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A power supply three interlocking device, comprising a cabinet body (3), a cabinet door (5) and a baffle (10), the front end of the cabinet body (3) is provided with a cabinet bin (14), characterized in that: The cabinet door (5) is hinged to the front end of the cabinet body (3), one side of the baffle (10) is fixedly connected with a shaft rod (9), one end of the shaft rod (9) is fixedly connected with a clamping plate (13), the shaft rod (9) is rotatably connected in a rotating hole on one side of the cabinet door (5), the baffle (10) and the clamping plate (13) are located on the two sides of the cabinet door (5) respectively, and a blocking plate (16) is installed on the inner wall of the cabinet bin (14).

2. A power triad interlock device according to claim 1, characterized in that: A power circuit breaker is installed in the cavity of the cabinet bin (14), a second rotating operating rod (4) for opening and closing the power circuit breaker is arranged at the front end of the power circuit breaker, and a through-type socket (15) is arranged at the corresponding position of the lock hole of the second rotating operating rod (4) on the cabinet door (5).

3. The power triad interlock of claim 1, wherein: The cabinet body (3) is provided with a grounding knife switch, a first rotating operating rod (1) for controlling whether the grounding knife switch is in a grounding state is installed in the mounting groove arranged at the front end of the cabinet body (3), and the first rotating operating rod (1) is located at the slot opening of the mounting groove.

4. The power triad interlock of claim 1, wherein: The movable end of the baffle (10) is fixedly connected with a first lock buckle (7), the front end of the cabinet door (5) is provided with a second lock buckle (8) and an elastic structure (12), a safety lock (6) is arranged between the first lock buckle (7) and the second lock buckle (8), three perforations are arranged at the front end of the elastic structure (12), and screws (11) are inserted and connected in the perforations.

5. The power triad interlock of claim 1, wherein: The front end of the cabinet body (3) is fixedly connected with stable blocks (2) arranged in a linear array, and stable holes are arranged at the corresponding positions of the stable blocks (2) on the cabinet door (5) and are insertedly connected with the stable blocks (2).

6. The power triad interlock of claim 1, wherein: The front end of the baffle (10) is fixedly connected with a long rod, and a handle (17) is rotatably sleeved on the outer side of the long rod.

7. The power triad interlock of claim 2, wherein: The front end of the cabinet door (5) is provided with a sealing rod (18), one side of the baffle (10) is fixedly connected with a contact rod (19) in contact with the sealing rod (18), the contact rod (19) is located above the sealing rod (18), the contact rod (19) is in contact with the surface wall of the cabinet door (5), and the sealing rod (18) is located above the socket (15).

8. The power triad interlock of claim 1, wherein: The front end of the baffle (10) is fixedly connected with a connecting plate (20), the front end of the cabinet door (5) is provided with a connecting block (21), and a connecting groove (22) in sliding connection with the connecting plate (20) is arranged on one side of the connecting block (21).

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