Detachable switch cabinet locking device

Abstract

The utility model discloses a detachable switch cabinet locking device, which comprises a supporting plate and a drawer unit, the supporting plate is fixedly arranged in a switch cabinet and is used for supporting the drawer unit, various circuit components are arranged on the drawer unit, and when the drawer unit needs to be pulled out of the switch cabinet, the drawer unit can be pulled out of the switch cabinet. The power supply of the drawer unit is cut off by rotating the operating handle, when the power supply of the drawer unit is cut off, the positioning rod is driven to slide out of the positioning hole, positioning between the drawer unit and the supporting plate is canceled, and if the power supply of the drawer unit is not completely cut off, the positioning rod is continuously inserted into the positioning hole, and the drawer unit is fixed. The position of the drawer unit can be fixed, the safety of drawing out the drawer unit is improved, when the positioning rod slides out of the interior of the positioning hole, the drawer handle at the front end of the drawer unit can be directly pulled, the drawer unit can be directly drawn out of the switch cabinet, the drawer unit can be drawn out of the switch cabinet without other operations, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, specifically a detachable switch cabinet locking device. Background Technology

[0002] A switchgear is an electrical device whose main function is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes in a power system.

[0003] Existing switchgear includes various types, among which drawer-type switchgear is one. Drawer-type switchgear uses a steel plate to make a closed shell, and the electrical components of the incoming and outgoing circuits are installed in a removable drawer, forming a functional unit that can complete a certain type of power supply task. When pulling out the drawer unit in the drawer-type switchgear, it is generally necessary to turn the operating handle to disconnect the power supply to the drawer unit before pulling it out. However, before pulling out the drawer unit, due to human error, the operating handle may not be turned to the designated position, that is, the power supply to the drawer unit is not completely disconnected. This results in the drawer unit being pulled out before the power is disconnected, affecting the safety of the switchgear. At the same time, after disconnecting the power to the drawer unit, people need to press the button on the drawer handle to release the drawer lock before the drawer unit can be pulled out, which is relatively cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide a detachable switch cabinet locking device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a detachable switch cabinet locking device, comprising a support plate and a drawer unit. The support plate is fixedly installed inside the switch cabinet and is used to support the drawer unit. Various circuit components are installed on the drawer unit. A cylindrical electromagnet is fixedly installed in the middle of the support plate. A positioning rod is fixedly installed at the moving end of the cylindrical electromagnet. The positioning rod passes through the lower plane of the drawer unit and is slidably connected to the drawer unit. A positioning hole is provided on the support plate at the position corresponding to the positioning rod, and the positioning rod is slidably inserted into the positioning hole.

[0006] As a further preferred embodiment of this technical solution, the bottom end of the positioning rod is provided with a pressing slope facing the inside of the switch cabinet.

[0007] As a further preferred embodiment of this technical solution, an energy storage capacitor is installed inside the support plate. The energy storage capacitor is connected in parallel with the circuit power supply in the switch cabinet drawer unit, and the energy storage capacitor is connected in series with the circular tube electromagnet.

[0008] As a further preferred embodiment of this technical solution, a sliding hole is symmetrically provided at the bottom of one end of the drawer unit, and a plug rod is slidably installed inside the sliding hole. A plug hole is provided on the support plate at the position corresponding to the plug rod, and the plug hole is slidably inserted into the plug rod.

[0009] As a further preferred embodiment of this technical solution, drawer handles are symmetrically fixedly installed on the front end of the drawer unit, and a movable rod is slidably installed inside the drawer handle and the drawer unit. A pressing block is fixedly installed on one end of the movable rod, and a first inclined surface is provided on the end of the pressing block away from the movable rod. A second inclined surface is provided on the top end of the insert rod, and the second inclined surface is in pressing contact with the first inclined surface.

[0010] As a further preferred embodiment of this technical solution, a first spring is sleeved on the outer side of the insertion rod, one end of the first spring is fixedly connected to the inner wall of the drawer unit, and the other end of the first spring is fixedly connected to the outer wall of the movable rod.

[0011] As a further preferred embodiment of this technical solution, a second spring is sleeved on the outer side of the movable rod, one end of the second spring is fixedly connected to the inner wall of the drawer unit, and the other end of the second spring is fixedly connected to the outer wall of the second spring.

[0012] This utility model provides a detachable switch cabinet locking device, which has the following advantages:

[0013] (1) This utility model disconnects the power supply to the drawer unit by rotating the operating handle. When the power supply to the drawer unit is disconnected, the energy storage capacitor will discharge, and current will flow in the line connected to the energy storage capacitor, which can power the round tube electromagnet. Under power supply, the round tube electromagnet will drive the internal column to move, which will drive the positioning rod to slide out of the positioning hole, thus canceling the positioning between the drawer unit and the support plate. If the power supply to the drawer unit is not completely disconnected, no current will flow in the line with the energy storage capacitor connected in parallel with the power supply in the drawer unit, the round tube electromagnet will not work, and the positioning rod will continue to be inserted into the positioning hole, which can fix the position of the drawer unit and improve the safety of pulling out the drawer unit.

[0014] (2) When the positioning rod slides out of the positioning hole, the drawer handle at the front end of the drawer unit can be pulled directly, and the drawer unit can be pulled out of the switch cabinet directly without any other operation, which is convenient. Attached Figure Description

[0015] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0016] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the present invention.

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a circuit diagram of the present invention;

[0020] In the diagram: 1. Support plate; 2. Drawer unit; 3. Round tube electromagnet; 4. Positioning rod; 5. Positioning hole; 6. Extrusion bevel; 7. Energy storage capacitor; 8. Sliding hole; 9. Insert rod; 10. Insertion hole; 11. Drawer handle; 12. Movable rod; 13. Extrusion block; 14. First inclined surface; 15. Second inclined surface; 16. First spring; 17. Second spring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] This utility model provides a technical solution: such as Figures 1 to 5As shown in this embodiment, a detachable switch cabinet locking device includes a support plate 1 and a drawer unit 2. The support plate 1 is fixedly installed inside the switch cabinet and supports the drawer unit 2. Various circuit components are installed on the drawer unit 2. A circular tube electromagnet 3 is fixedly installed in the middle of the support plate 1. The circular tube electromagnet 3 is a device that can control the movement of the internal tube column when energized. The circular tube electromagnet 3 is a mature existing technology, so it will not be described in detail here. A positioning rod 4 is fixedly installed at the moving end of the circular tube electromagnet 3. The positioning rod 4 passes through the lower plane of the drawer unit 2 and is slidably connected to the drawer unit 2. A positioning hole 5 is provided on plate 1 corresponding to the position of positioning rod 4. The positioning rod 4 is slidably inserted into the positioning hole 5. A pressing bevel 6 is provided at the bottom end of the positioning rod 4 facing the inside of the switch cabinet. An energy storage capacitor 7 is installed inside the support plate 1. The energy stored in the energy storage capacitor 7 can support the continuous operation of the cylindrical electromagnet 3 for a period of time, providing sufficient time for personnel to pull the drawer unit 2 out of the switch cabinet. The energy storage capacitor 7 is connected in parallel with the circuit power supply in the switch cabinet drawer unit 2, and the energy storage capacitor 7 is connected in series with the cylindrical electromagnet 3. When it is necessary to pull the drawer unit 2 out of the switch cabinet, the power supply to the drawer unit 2 is disconnected by rotating the operating handle. When the power supply to unit 2 is disconnected, the energy storage capacitor 7 will discharge, and current will flow in the circuit connected to the energy storage capacitor 7, supplying power to the cylindrical electromagnet 3. Under power supply, the cylindrical electromagnet 3 will move its internal column, causing the positioning rod 4 to slide out of the positioning hole 5, thus canceling the positioning between drawer unit 2 and support plate 1. If the power supply to drawer unit 2 is not completely disconnected, no current will flow in the circuit containing the energy storage capacitor 7, which is connected in parallel with the power supply in drawer unit 2. The cylindrical electromagnet 3 will not work, and the positioning rod 4 will remain inserted into the positioning hole 5, fixing the position of drawer unit 2 and improving the safety of pulling out drawer unit 2. When rod 4 slides out of the positioning hole 5, the drawer handle 11 at the front end of drawer unit 2 can be pulled directly to remove drawer unit 2 from the switch cabinet without any other operation. This is convenient. When drawer unit 2 is slid into the switch cabinet, the pressing slope 6 at the bottom of positioning rod 4 will press one end of support plate 1, which can cause the tube column inside the round tube electromagnet 3 to retract into the round tube electromagnet 3. At this time, the spring in the round tube electromagnet 3 is in a compressed state. When positioning rod 4 reaches the position of positioning hole 5, positioning rod 4 will be inserted into positioning hole 5 to fix the position of drawer unit 2, which facilitates the assembly between drawer unit 2 and support plate 1.

[0023] like Figures 1 to 5As shown, one end of the drawer unit 2 has symmetrically symmetrically provided sliding holes 8. A rod 9 is slidably installed inside the sliding holes 8. The support plate 1 has a corresponding insertion hole 10 at the position of the rod 9. The insertion hole 10 is slidably inserted into the rod 9. The front end of the drawer unit 2 has symmetrically fixedly provided drawer handles 11. A movable rod 12 is slidably installed inside the drawer handle 11 and the drawer unit 2. A pressing block 13 is fixedly installed at one end of the movable rod 12. The end of the pressing block 13 away from the movable rod 12 has a first inclined surface. 14. The top end of the insertion rod 9 is provided with a second inclined surface 15, which is in contact with the first inclined surface 14. A first spring 16 is sleeved on the outside of the insertion rod 9. One end of the first spring 16 is fixedly connected to the inner wall of the drawer unit 2, and the other end of the first spring 16 is fixedly connected to the outer wall of the movable rod 12. A second spring 17 is sleeved on the outside of the movable rod 12. One end of the second spring 17 is fixedly connected to the inner wall of the drawer unit 2, and the other end of the second spring 17 is fixedly connected to the outer wall of the second spring 17.

[0024] After the drawer unit 2 is slid into the switch cabinet, by pressing one end of the movable rod 12, the first inclined surface 14 on the pressing block 13 at one end of the movable rod 12 will press the second inclined surface 15 at the top of the insert rod 9, which will cause the insert rod 9 to slide inside the sliding hole 8 and insert the insert rod 9 into the insertion hole 10, so that the position between the drawer unit 2 and the support plate 1 can be initially positioned.

[0025] This utility model provides a detachable switch cabinet locking device, the specific working principle of which is as follows:

[0026] When the device is in use, the power supply in drawer unit 2 charges the energy storage capacitor 7 through the wires. When the energy storage capacitor 7 is fully charged, no current flows in the circuit connected in parallel with the power supply in drawer unit 2, where the energy storage capacitor 7 is located. At this time, the positioning rod 4 at the moving end of the cylindrical electromagnet 3 will be pushed into the positioning hole 5 by the spring in the cylindrical electromagnet 3, which can fix the drawer unit 2 and the support plate 1. When it is necessary to pull the drawer unit 2 out of the switch cabinet, the power supply to the drawer unit 2 is disconnected by turning the operating handle. When the power supply to the drawer unit 2 is disconnected, the energy storage capacitor 7 will discharge, and current will flow in the circuit connected to the energy storage capacitor 7. The cylindrical electromagnet 3 can be powered, and when powered, the cylindrical electromagnet 3 will drive the internal column to move, which will drive the positioning rod 4 to slide out of the positioning hole 5, canceling the positioning between the drawer unit 2 and the support plate 1. The drawer handle 11 at the front end of the drawer unit 2 can be pulled directly, and the drawer unit 2 can be pulled out directly from the switch cabinet. If the power supply to the drawer unit 2 is not completely disconnected, the circuit with the energy storage capacitor 7 connected in parallel with the power supply in the drawer unit 2 will not flow continuously, the cylindrical electromagnet 3 will not work, and the positioning rod 4 will continue to be inserted into the positioning hole 5, which can fix the position of the drawer unit 2 and improve the safety of pulling out the drawer unit 2.

[0027] When the drawer unit 2 is slid into the switch cabinet, the pressing slope 6 at the bottom of the positioning rod 4 will press one end of the support plate 1, which can drive the tube column inside the round tube electromagnet 3 to retract into the round tube electromagnet 3. At this time, the spring in the round tube electromagnet 3 is in a compressed state. When the positioning rod 4 reaches the position of the positioning hole 5, the positioning rod 4 will be inserted into the positioning hole 5, which can fix the position of the drawer unit 2.

[0028] After the drawer unit 2 is slid into the switch cabinet, pressing one end of the movable rod 12 will cause the first inclined surface 14 on the pressing block 13 at one end of the movable rod 12 to press the second inclined surface 15 at the top of the insertion rod 9, causing the insertion rod 9 to slide inside the sliding hole 8 and insert into the insertion hole 10. This allows for preliminary positioning of the drawer unit 2 and the support plate 1. At this time, the drawer unit 2 will be connected to the power supply in the drawer unit 2, and the power supply in the drawer unit 2 will charge the energy storage capacitor 7 through the wire. When the energy storage capacitor 7 is fully charged, no current will flow in the circuit that has the energy storage capacitor 7 and is connected in parallel with the power supply in the drawer unit 2. At this time, the positioning rod 4 at the moving end of the round tube electromagnet 3 will be pushed into the positioning hole 5 by the spring in the round tube electromagnet 3, thus positioning the drawer unit 2 and the support plate 1.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable switch cabinet locking device, comprising a support plate (1) and a drawer unit (2), wherein the support plate (1) is fixedly installed inside the switch cabinet, the support plate (1) is used to support the drawer unit (2), and various circuit components are installed on the drawer unit (2), characterized in that: A cylindrical electromagnet (3) is fixedly installed in the middle of the support plate (1). A positioning rod (4) is fixedly installed at the moving end of the cylindrical electromagnet (3). The positioning rod (4) passes through the lower plane of the drawer unit (2) and is slidably connected to the drawer unit (2). A positioning hole (5) is opened on the support plate (1) at the position corresponding to the positioning rod (4). The positioning rod (4) is slidably inserted into the positioning hole (5).

2. A removable switchgear locking device according to claim 1, characterized in that: The bottom end of the positioning rod (4) is provided with a pressing slope (6) facing the inside of the switch cabinet.

3. A removable switchgear locking device according to claim 1, characterized in that: The support plate (1) is equipped with an energy storage capacitor (7), which is connected in parallel with the circuit power supply in the switch cabinet drawer unit (2), and is connected in series with the round tube electromagnet (3).

4. A removable switchgear locking device according to claim 3, characterized in that: The drawer unit (2) has symmetrical sliding holes (8) at one end of its bottom. A rod (9) is slidably installed inside the sliding hole (8). The support plate (1) has a hole (10) corresponding to the position of the rod (9). The hole (10) is slidably inserted into the rod (9).

5. A removable switchgear locking device according to claim 4, characterized in that: The front end of the drawer unit (2) is symmetrically fixedly equipped with drawer handles (11). The drawer handles (11) and the drawer unit (2) are slidably installed with movable rods (12). One end of the movable rod (12) is fixedly equipped with a pressing block (13). The end of the pressing block (13) away from the movable rod (12) is provided with a first inclined surface (14). The top end of the insert rod (9) is provided with a second inclined surface (15). The second inclined surface (15) is in pressing contact with the first inclined surface (14).

6. A removable switchgear locking device according to claim 5, wherein: The outer side of the insert rod (9) is fitted with a first spring (16), one end of the first spring (16) is fixedly connected to the inner wall of the drawer unit (2), and the other end of the first spring (16) is fixedly connected to the outer wall of the movable rod (12).

7. A removable switchgear locking device according to claim 6, characterized in that: The movable rod (12) is fitted with a second spring (17) on its outer side. One end of the second spring (17) is fixedly connected to the inner wall of the drawer unit (2), and the other end of the second spring (17) is fixedly connected to the outer wall of the second spring (17).

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