An electric control cabinet strong electric box door lock system

Abstract

The application discloses a strong electric box door lock system of an electric control cabinet. The electric control cabinet comprises a weak electric box and a strong electric box arranged in an up-down mode. The weak electric box and the strong electric box are separated by a partition. The weak electric box is provided with an upper cabinet door, and the strong electric box is provided with a lower cabinet door. A lock ring is arranged on the inner wall of the lower cabinet door. A lock hole of the lock ring is arranged in a vertical direction. A through hole for penetrating the lock ring is formed in a side plate of an opening end of the strong electric box. A hand-operated electric switch is arranged in the weak electric box. The hand-operated electric switch is provided with a handle and is used for controlling the on-off of strong electricity in the strong electric box. A lock rod is vertically penetrated through the partition. The upper end of the lock rod is connected with the handle, and the upper end of the lock rod is arranged in a sliding mode along the length direction of the handle. When the handle is swung downward to a lower position, the strong electricity is conducted, the lower end of the lock rod is penetrated into the lock hole, and the lower cabinet door is closed. When the handle is swung upward to an upper position, the strong electricity is disconnected, the lock rod is arranged above the lock hole, and the lower cabinet door is opened. The scheme can effectively prevent the opening of the cabinet door of the strong electric box in the power-on state, and is helpful to improve the safety of the electric control cabinet during daily use and maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of electrical control cabinet door lock structure, and particularly relates to an electrical control cabinet power box door lock system. Background Technology

[0002] Electrical control cabinets are mainly used for distributing and controlling circuits, and also serve as electrical safety protection. To ensure safety during installation, commissioning, maintenance, and use, commonly used electrical control cabinets are equipped with separate high-voltage and low-voltage boxes, each with its own independent door.

[0003] Routine maintenance and repairs only require opening the low-voltage distribution box door, without needing to open the high-voltage distribution box door. Currently, both the high-voltage and low-voltage distribution boxes in the existing electrical control cabinet can be opened independently. Therefore, it's impossible to prevent operators from performing repairs without shutting off the high-voltage power supply in an attempt to save time and effort, posing a significant safety hazard. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a door lock system for the electrical control cabinet's power distribution box, which can effectively prevent the cabinet door from opening when the power is on, thus helping to improve the safety of the electrical control cabinet during daily use and maintenance.

[0005] In order to achieve the purpose of this utility model, the following solution is proposed:

[0006] An electrical control cabinet door lock system for a power distribution box, wherein the electrical control cabinet includes a low-voltage box and a high-voltage box arranged vertically, the low-voltage box and the high-voltage box are separated by a partition, the low-voltage box is provided with an upper cabinet door and the high-voltage box is provided with a lower cabinet door.

[0007] The inner wall of the lower cabinet door is equipped with a lock ring, the lock hole of the lock ring is set in the vertical direction, and the side plate at the opening end of the power box is provided with a through hole for the lock ring to pass through.

[0008] The low-voltage box is equipped with a manual switch with a handle, which is used to control the on / off of the high-voltage electricity in the high-voltage box.

[0009] A locking rod is vertically inserted through the partition, the upper end of the locking rod is connected to the handle, and the upper end of the locking rod is slidably set along the length of the handle;

[0010] When the handle is swung downwards to the lower position, the high voltage is turned on, and the lower end of the locking rod passes through the keyhole, closing the lower cabinet door; when the handle is swung upwards to the upper position, the high voltage is turned off, the locking rod is above the keyhole, and the lower cabinet door opens.

[0011] The beneficial effects of this utility model are as follows: This solution requires manually pushing the handle upwards to disconnect the power supply before the lower cabinet door of the power distribution box can be opened. This effectively avoids the need to inspect the inside of the power distribution box when it is disconnected, thus ensuring the safety of the power distribution box during maintenance. Attached Figure Description

[0012] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0013] Figure 1 A schematic diagram of the electrical control cabinet of this application is shown.

[0014] Figure 2 A schematic diagram of the structure of this application is shown when the lower cabinet door is closed.

[0015] Figure 3 A schematic diagram of the structure of this application is shown when the lower cabinet door is open.

[0016] The markings in the diagram are: partition-11, upper cabinet door-12, lower cabinet door-13, through hole-14, guide block-15, lock ring-2, lock hole-21, manual switch-3, handle-31, strip hole-311, lock rod-4, lever-41, top rod-5, spring-51. Detailed Implementation

[0017] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, and are only for the convenience of describing this utility model and simplifying the description. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "parallel," "vertical," etc., do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly tilted.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1 to 3 As shown, an electrical control cabinet door lock system for a power distribution box is provided. The electrical control cabinet includes a low-voltage box and a high-voltage box arranged vertically. The low-voltage box and the high-voltage box are separated by a partition 11. The low-voltage box is provided with an upper cabinet door 12, and the high-voltage box is provided with a lower cabinet door 13.

[0022] like Figure 2 , Figure 3 As shown, a locking ring 2 is provided on the inner wall of the lower cabinet door 13. The locking hole 21 of the locking ring 2 is set in the vertical direction. A through hole 14 for the locking ring 2 is opened on the side plate of the opening end of the power box.

[0023] like Figures 1 to 3 As shown, the weak current box is equipped with a manual switch 3, which has a handle 31 for controlling the on / off of the strong current in the strong current box.

[0024] like Figure 2 , Figure 3 As shown, a locking rod 4 is vertically inserted through the partition 11. The upper end of the locking rod 4 is connected to the handle 31, and the upper end of the locking rod 4 is slidably arranged along the length direction of the handle 31.

[0025] like Figure 2 As shown, when the handle 31 swings downward to the lower position, the high voltage is turned on, the lower end of the locking rod 4 passes through the lock hole 21, and the lower cabinet door 13 is closed.

[0026] like Figure 3 As shown, when handle 31 is swung upwards to the upper position, the high voltage is disconnected, the locking rod 4 is positioned above the lock hole, and the lower cabinet door 13 is opened.

[0027] With the above design, if it is necessary to inspect the inside of the power distribution box, it is necessary not only to open the upper cabinet door 12 of the low voltage distribution box, but also to manually push the handle 31 upward to disconnect the power before the lower cabinet door 13 of the power distribution box can be opened. This can effectively avoid inspecting the inside of the power distribution box when it is disconnected, and ensure the safety of inspecting the power distribution box.

[0028] As a preferred option, the power distribution box is equipped with an air switch that can automatically cut off the power in case of overload or short circuit, so that the power supply is not only controlled by the manual switch 3.

[0029] Preferred, such as Figure 2 , Figure 3 As shown, a guide block 15 is provided on the inner wall of the side plate at the opening end of the power box, which is located above the through hole 14. The lower end of the locking rod 4 passes through the guide block 15 to improve the strength of the locking rod 4 installation structure and the stability during movement.

[0030] Preferred, such as Figure 2 , Figure 3 As shown, the handle 31 has a strip-shaped hole 311 along its length. The upper end of the locking rod 4 passes through the strip-shaped hole 311 via a lever 41. When the handle 31 is moved up and down, the locking rod 4 can move along the axial direction, thereby separating or connecting with the lock hole 21. As the locking rod 4 moves along the axial direction, the lever 41 will slide in the strip-shaped hole 311 to adapt to the change in the relative position between the handle 31 and the locking rod 4.

[0031] Preferred, such as Figure 3 As shown, the lever 41 has a handle at one end facing the middle of the low-voltage box, so that the handle 31 can be swung up and down by operating the handle.

[0032] Preferred, such as Figure 2 , Figure 3 As shown, a push rod 5 is provided on the inner wall of the power distribution box, which is coaxially arranged with the through hole 14, and a spring 51 is provided at the end of the push rod 5. Figure 2 As shown, when the lower cabinet door 13 is closed, the front end of the top rod 5 abuts against the end face of the locking ring 2, and the spring 51 is in a compressed state. Therefore, when the locking rod 4 separates from the lock hole 21, the elastic force of the spring 51 will push the top rod 5 towards the locking ring 2, thereby causing the lower cabinet door 13 to automatically open.

[0033] Specifically, such as Figure 2 , Figure 3 As shown, a mounting block is provided on the inner wall of the power box. The top rod 5 passes through the mounting block. The end and middle of the top rod 5 are provided with retaining rings. The front end of the top rod faces the through hole 14. The mounting block is located between the two retaining rings. The spring 51 is sleeved on the top rod 5 between the two retaining rings. The spring 51 is located between the retaining ring in the middle of the top rod 5 and the mounting block. In this way, the spring 51 can be used to apply a forward elastic force to the top rod 5.

[0034] Preferred, such as Figure 2 , Figure 3 As shown, when the spring 51 is in its natural state, the front end of the push rod 5 is located below the locking rod 4. This design can use the push rod 5 to restrict the locking rod 4 from moving downward, thereby preventing the handle 31 from swinging downward due to accidental contact or misoperation during maintenance, and preventing the high voltage from being connected when the lower cabinet door 13 is open. It can also be understood that this scheme can only be used when the lower cabinet door 13 is closed, by using the locking ring 2 to push the push rod 5 open, so that the handle 31 can swing downward and the high voltage can be conducted, thereby improving the safety of the electrical control cabinet.

[0035] Preferred, such as Figure 3 As shown, when the spring 51 is in its natural state, the front end of the push rod 5 is inserted into the through hole 14 to improve the ability of the push rod 5 to withstand the downward pressure of the locking rod 4.

[0036] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A door lock system for a power control cabinet, the power control cabinet comprising a low-voltage box and a high-voltage box arranged vertically, the low-voltage box and the high-voltage box being separated by a partition (11), the low-voltage box having an upper cabinet door (12) and the high-voltage box having a lower cabinet door (13), characterized in that: A lock ring (2) is provided on the inner wall of the lower cabinet door (13). The lock hole (21) of the lock ring (2) is set in the vertical direction. A through hole (14) is opened on the side plate of the opening end of the power box. The weak current box is equipped with a manual switch (3) with a handle (31) for controlling the on / off of the strong current in the strong current box. A locking rod (4) is vertically inserted through the partition (11). The upper end of the locking rod (4) is connected to the handle (31), and the upper end of the locking rod (4) is slidably set along the length direction of the handle (31). When the handle (31) swings down to the lower position, the high voltage is turned on, the lower end of the locking rod (4) passes through the lock hole (21), and the lower cabinet door (13) is closed; when the handle (31) swings up to the upper position, the high voltage is turned off, the locking rod (4) is above the lock hole, and the lower cabinet door (13) is opened.

2. The electrical control cabinet power box door lock system according to claim 1, characterized in that, A guide block (15) is provided on the inner wall of the side plate at the opening end of the power box, which is located above the through hole (14), and the lower end of the locking rod (4) passes through the guide block (15).

3. The electrical control cabinet power box door lock system according to claim 1, characterized in that, The handle (31) has a strip hole (311) along its length, and the upper end of the locking rod (4) passes through the strip hole (311) via a lever (41).

4. The electrical control cabinet power box door lock system according to claim 3, characterized in that, The lever (41) has a handle at the end facing the middle of the low-voltage box.

5. The electrical control cabinet power box door lock system according to claim 1, characterized in that, A top rod (5) is provided on the inner wall of the electrical box. It is coaxially arranged with the through hole (14). A spring (51) is provided at the end of the top rod (5). When the lower cabinet door (13) is closed, the front end of the top rod (5) abuts against the end face of the locking ring (2), and the spring (51) is in a compressed state.

6. The electrical control cabinet power box door lock system according to claim 5, characterized in that, When the spring (51) is in its natural state, the front end of the push rod (5) is located below the locking rod (4).

7. The electrical control cabinet power box door lock system according to claim 6, characterized in that, When the spring (51) is in its natural state, the front end of the push rod (5) is inserted into the through hole (14).

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