Low-voltage alternating-current drawer-type switchgear with self-locking structure

Abstract

The utility model relates to drawer type switch cabinet technical field discloses a low pressure alternating current drawer type switch cabinet with self -locking structure, including bottom plate, the outside fixed connection of bottom plate has the cabinet body, the inside slide connection of cabinet body has a plurality of drawers, the inside fixed connection of drawer has circuit breaker, the outside fixed connection of drawer has control knob, the inside fixed connection of drawer has self -locking mechanism, the inside of drawer is provided with the wire binding mechanism, the outside fixed connection of connecting ring is in the outside of drawer. In the utility model, push the drawer into the cabinet body, rotate the follower plate, make the follower plate drive the follower rod to move, and then make the tension spring drive the limiting plate to move, thereby realize that self -locking can enhance low pressure alternating current drawer type switch cabinet safety, prevent the misoperation and cause the electric arc or short circuit of live plug -in, guarantee drawer steady in each gear.

Description

Technical Field

[0001] This utility model relates to the field of drawer-type switchgear technology, and in particular to a low-voltage AC drawer-type switchgear with a self-locking structure. Background Technology

[0002] In industrial production workshops, it distributes power to machine tools and assembly line equipment; the drawer-type design facilitates quick replacement of faulty units, reducing downtime. In commercial complexes, it is used for power distribution and control of air conditioning, lighting, etc., adapting to the need for flexible switching of multiple circuits. In hospital power distribution rooms, it supplies power to critical areas such as operating rooms and intensive care units, ensuring the stable operation of medical equipment.

[0003] In the existing technology, some drawer-type switch cabinets are mainly fixed structures with high integration of internal components. The overall installation and maintenance require overall operation. Later, drawer-type cabinets were developed, which use rails to pull out the drawer units and use locks or mechanical buckles to fix their positions. Different manufacturers mostly use their own standards in terms of structural dimensions and interface specifications, forming a differentiated product system.

[0004] However, in actual use, without a self-locking structure, the drawer is prone to move accidentally under external force, causing loose wiring connections, unstable power supply, and no locking protection during maintenance. Accidental contact can easily lead to electric shock and other safety accidents, weakening the reliability and maintenance safety of the power distribution device. In response to the above problems, a low-voltage AC drawer-type switchgear with a self-locking structure is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a low-voltage AC drawer-type switchgear with a self-locking structure, aiming to improve the problem that some drawer-type switchgear in the prior art cannot achieve self-locking.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A low-voltage AC drawer-type switch cabinet with a self-locking structure includes a base plate, a cabinet body fixedly connected to the outside of the base plate, multiple drawers slidably connected inside the cabinet body, a circuit breaker fixedly connected inside the drawer, a control knob fixedly connected to the outside of the drawer, a self-locking mechanism fixedly connected inside the drawer, and a wire harness mechanism provided inside the drawer. The self-locking mechanism includes a connecting ring, which is fixedly connected to the outside of the drawer. A follower plate is rotatably connected to the outside of the connecting ring. An installation block is fixedly connected to the inside of the drawer. A hollow rod is fixedly connected to the outside of the installation block. A connecting rod is rotatably connected to the inside of the hollow rod. A follower rod is fixedly connected to the inside of the connecting rod. A tension spring is sleeved on the outside of the follower rod. A limit assembly is fixedly connected to the outside of the connecting rod. Multiple sliding components are provided inside the cabinet. As a further description of the above technical solution: The limiting component includes a limiting plate, which is externally fixedly connected to the outside of the connecting rod, and a limiting groove is provided at the bottom of the drawer; As a further description of the above technical solution: The sliding assembly includes a slide groove, the exterior of which is disposed inside the cabinet, and a fixing rod is fixedly connected inside the cabinet; As a further description of the above technical solution: The fixed rod is externally slidably connected to multiple pulleys, and the cabinet body is internally provided with multiple limiting grooves. As a further description of the above technical solution: The wire harnessing mechanism includes a contact, the outside of which is fixedly connected to the inside of the drawer. The inside of the drawer is fixedly connected to a plurality of wire harnessing slots, and the outside of the wire harnessing slots is threaded with fixing bolts. As a further description of the above technical solution: The fixing bolt is externally threaded to a positioning plate, and the positioning plate has a threaded hole inside. As a further description of the above technical solution: A multi-functional instrument is fixedly connected to the outside of the drawer, and a wiring terminal is fixedly connected to the inside of the drawer; As a further description of the above technical solution: The contact is externally fixedly connected to the inside of the drawer, and the drawer is externally slidably connected to the inside of the cabinet.

[0007] This utility model has the following beneficial effects: 1. In this utility model, by pushing the drawer into the cabinet and rotating the follower plate, the follower plate drives the connecting rod to move, which in turn causes the tension spring to drive the limit plate to move, thereby achieving self-locking. This enhances the safety of the low-voltage AC drawer-type switch cabinet, prevents arcing or short circuits caused by misoperation due to live plugging and unplugging, ensures the drawer is stable in each position, avoids vibration and loosening that may affect electrical connections, reduces misjudgment and operation, and improves the reliability of equipment operation and maintenance.

[0008] 2. In this utility model, the cable tray is fixed inside the drawer, and the cable bundle is placed in the tray. Then, the positioning plate is fixed to the outside of the cable tray with bolts to complete the fixing. This achieves the arrangement of the cable bundle, avoids insulation wear caused by messy cables, facilitates quick identification of phase wires and control wires, shortens maintenance time, reduces electromagnetic interference between cables, ensures signal stability, and, in conjunction with the self-locking structure layout, prevents cables from getting stuck when the drawer is pushed in and pulled out, thus improving equipment safety. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a low-voltage AC drawer-type switchgear with a self-locking structure proposed in this utility model. Figure 2 This is a schematic diagram of the structure of a low-voltage AC drawer-type switchgear with a self-locking structure proposed in this utility model. Figure 3 This is a schematic diagram of the limiting groove two of a low-voltage AC drawer-type switchgear with a self-locking structure proposed in this utility model. Figure 4 This is a schematic diagram of the positioning plate of a low-voltage AC drawer-type switchgear with a self-locking structure proposed in this utility model. Figure 5 This is a schematic diagram of the cable tray structure of a low-voltage AC drawer-type switchgear with a self-locking structure proposed in this utility model. Figure 6 This is a schematic diagram of the wiring terminals of a low-voltage AC drawer-type switchgear with a self-locking structure proposed in this utility model; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0010] Legend: 1. Base plate; 2. Cabinet body; 3. Drawer; 4. Circuit breaker; 5. Control knob; 6. Connecting ring; 7. Follower plate; 8. Mounting block; 9. Hollow rod; 10. Connecting rod; 11. Follower rod; 12. Tension spring; 13. Limiting plate; 14. Limiting groove one; 15. Slide groove; 16. Fixing rod; 17. Pulley; 18. Limiting groove two; 19. Contact; 20. Cable tray; 21. Fixing bolt; 22. Positioning plate; 23. Threaded hole; 24. Multifunctional instrument; 25. Terminal block. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0012] Reference Figure 1 , Figure 4 and Figure 7The present invention provides an embodiment of a low-voltage AC drawer-type switch cabinet with a self-locking structure, comprising a base plate 1, a cabinet body 2 fixedly connected to the outside of the base plate 1, the cabinet body 2 being a cuboid frame structure made of spliced ​​plates, with multiple partitions inside dividing multiple installation spaces, multiple drawers 3 slidably connected inside the cabinet body 2, a circuit breaker 4 fixedly connected inside the drawer 3, the circuit breaker 4 being a square electrical component fixed inside the drawer 3 by bolts for controlling the on / off state of the circuit, a control knob 5 fixedly connected to the outside of the drawer 3, the control knob 5 being a circular rotating component installed in the center of the front of the drawer 3, with an indicator mark on the surface to control the state of the circuit breaker 4, a self-locking mechanism fixedly connected inside the drawer 3, and a wire harness mechanism provided inside the drawer 3; The self-locking mechanism includes a connecting ring 6, which is fixedly connected to the outside of the drawer 3. A follower plate 7 is rotatably connected to the outside of the connecting ring 6. An installation block 8 is fixedly connected to the inside of the drawer 3. The installation block 8 is a cuboid block structure and is fixed to the inner wall of the drawer 3 by bolts for installing the self-locking component. A hollow rod 9 is fixedly connected to the outside of the installation block 8. The hollow rod 9 is a cylindrical tubular structure and is horizontally fixed to the side of the installation block 8. The hollow part is used to accommodate internal components. A connecting rod 10 is rotatably connected to the inside of the hollow rod 9. A follower rod 11 is fixedly connected to the inside of the connecting rod 10. A tension spring 12 is sleeved on the outside of the follower rod 11. The tension spring 12 is a spiral spring. One end is fixed to the middle of the follower rod 11 and the other end is fixed to the inner wall of the hollow rod 9. In its natural state, it is in a contracted state and can drive the follower rod 11 to reset. A limit component is fixedly connected to the outside of the connecting rod 10. Multiple sliding components are provided inside the cabinet 2. Reference Figure 3 , Figure 6 and Figure 7 The limiting component includes a limiting plate 13. When the follower rod 11 rotates to a certain angle, it contacts the limiting plate 13, thereby limiting its continued rotation. The limiting plate 13 is externally fixedly connected to the outside of the connecting rod 10. A limiting groove 14 is opened at the bottom of the drawer 3. The limiting groove 14 is opened along the length direction of the drawer 3, and the edge of the groove is smooth. It can cooperate with the internal structure of the cabinet 2 to limit the push-pull stroke of the drawer 3. The sliding component includes a slide groove 15. The slide groove 15 is a rectangular groove, symmetrically opened inside the cabinet 2 for each layer. On both sides of the space, the groove extends along the depth direction of the cabinet 2. The outside of the slide groove 15 is set inside the cabinet 2. The inside of the cabinet 2 is fixedly connected to the fixed rod 16. Multiple pulleys 17 are slidably connected to the outside of the fixed rod 16. The pulleys 17 are round wheels with a through hole in the middle. They are fitted on the outside of the fixed rod 16 and can roll freely along the length direction of the fixed rod 16. When the drawer 3 is pushed or pulled, the pulleys 17 contact the slide grooves 15 on both sides of the drawer 3 and roll to reduce friction. Multiple limiting grooves 18 are opened inside the cabinet 2. Reference Figure 2, Figure 4 and Figure 5 The cable management mechanism includes a contact 19, which is a cylindrical structure. One end of the contact 19 is connected to the internal wiring, and the other end is a contact point that can be connected to the external circuit to achieve circuit communication. The contact 19 can be made or separated as the drawer 3 is pushed or pulled. The contact 19 is externally fixedly connected to the inside of the drawer 3. Multiple cable management slots 20 are fixedly connected inside the drawer 3. Each cable management slot 20 is a long, narrow slot with an open opening, arranged along the inner side wall of the drawer 3, allowing cables to be embedded and organized. A fixing bolt 21 is threadedly connected to the external of each cable management slot 20. The fixing bolt 21 is cylindrical with threads on its surface and can rotate and retract along the threaded hole 23 of the cable management slot 20. A positioning plate 22 is connected, which is a sheet-like structure and can move up and down with the rotation of the fixing bolt 21. It is used to press the cables in the cable tray 20. The positioning plate 22 has a threaded hole 23 inside. A multi-functional instrument 24 is fixedly connected to the outside of the drawer 3. The multi-functional instrument 24 is a square panel with a display screen and multiple indicator lights on the surface, which can display data such as current and voltage. A terminal block 25 is fixedly connected to the inside of the drawer 3. The terminal block 25 is a row-shaped structure with multiple wiring holes, which can connect and fix external cables to internal components. The contact 19 is fixedly connected to the inside of the drawer 3, and the outside of the drawer 3 is slidably connected to the inside of the cabinet 2.

[0013] Working principle: A connecting ring 6 is fixed to the outside of drawer 3, allowing the follower plate 7 to rotate around the connecting ring 6. An installation block 8 is fixed inside drawer 3 and horizontally fixed to the outside of hollow rod 9, allowing the follower rod 11 inside connecting rod 10 to rotate. A spiral tension spring 12 is sleeved on the outside of the follower rod 11, with one end fixed to the middle of the follower rod 11 and the other end fixed to the inner wall of hollow rod 9. In its natural state, it is in a contracted state. Then, the rotation of the follower plate 7 drives the limiting plate 13, which is vertically fixed to the connecting rod 10, to contact and restrict the rotation. At the same time, the tension spring 12 drives the follower rod 11 to reset, realizing the self-locking of drawer 3. The internal columnar contact 19 of drawer 3 is connected to the internal wiring at one end and is a contact point at the other end. It connects or separates from the outside as drawer 3 is pushed and pulled to realize the circuit switching. The bottom of drawer 3 has a long strip-shaped open cable tray 20 to embed cables. The external columnar fixing bolt 21 is threaded and rotates along the threaded hole 23 of the cable tray 20, which drives the positioning plate 22 to move up and down and press the cable in the tray, so that the threaded hole 23 of the positioning plate 22 can be passed through by the bolt. The external multi-functional instrument 24 of drawer 3 has a display screen and indicator lights to display current, voltage, etc. The internal row of terminal blocks 25 has multiple wiring holes to connect external cables and internal components to ensure the orderly wiring.

[0014] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-voltage AC drawer-type switchgear with a self-locking structure, comprising a base plate (1), characterized in that: The base plate (1) is fixedly connected to the outside of the cabinet (2), and multiple drawers (3) are slidably connected inside the cabinet (2). A circuit breaker (4) is fixedly connected inside the drawer (3), a control knob (5) is fixedly connected to the outside of the drawer (3), a self-locking mechanism is fixedly connected inside the drawer (3), and a wire harness mechanism is provided inside the drawer (3). The self-locking mechanism includes a connecting ring (6), which is fixedly connected to the outside of the drawer (3). A follower plate (7) is rotatably connected to the outside of the connecting ring (6). An installation block (8) is fixedly connected to the inside of the drawer (3). A hollow rod (9) is fixedly connected to the outside of the installation block (8). A connecting rod (10) is rotatably connected to the inside of the hollow rod (9). A follower rod (11) is fixedly connected to the inside of the connecting rod (10). A tension spring (12) is sleeved on the outside of the follower rod (11). A limit component is fixedly connected to the outside of the connecting rod (10). Multiple sliding components are provided inside the cabinet (2).

2. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 1, characterized in that: The limiting component includes a limiting plate (13), which is fixedly connected to the outside of the connecting rod (10), and a limiting groove (14) is provided at the bottom of the drawer (3).

3. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 2, characterized in that: The sliding assembly includes a slide groove (15), the exterior of which is disposed inside the cabinet (2), and a fixing rod (16) is fixedly connected inside the cabinet (2).

4. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 3, characterized in that: The fixed rod (16) is externally slidably connected to multiple pulleys (17), and the cabinet (2) is internally provided with multiple limiting grooves (18).

5. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 1, characterized in that: The wire harness mechanism includes a contact (19), the outside of which is fixedly connected to the inside of the drawer (3). The inside of the drawer (3) is fixedly connected to a plurality of wire harness slots (20), and the outside of the wire harness slots (20) is threadedly connected to a fixing bolt (21).

6. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 5, characterized in that: The fixing bolt (21) is externally threaded to a positioning plate (22), and the positioning plate (22) has a threaded hole (23) inside.

7. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 6, characterized in that: The drawer (3) is externally fixedly connected to a multi-functional instrument (24), and the drawer (3) is internally fixedly connected to a terminal block (25).

8. A low-voltage AC drawer-type switchgear with a self-locking structure according to claim 5, characterized in that: The contact (19) is fixedly connected to the inside of the drawer (3), and the drawer (3) is slidably connected to the inside of the cabinet (2).

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