Switchgear with linkage function

Abstract

The utility model discloses a switchgear with linkage function, through linkage mechanism will the opening and closing of cabinet door and control switch linkage, make when cabinet door open, control switch linkage disconnect, thereby ensure the work safety of overhaul personnel. For this, the utility model provides a switchgear with linkage function, including cabinet body and rotatable setting cabinet door on the cabinet body, be equipped with locking device on the cabinet door, be equipped with locking plate on the cabinet body, the inside of cabinet door still be equipped with the control switch of linkage with locking device, control switch set up on the power supply circuit of cabinet body, wherein, when locking device lock cabinet door on the cabinet body, control switch linkage close under the drive of locking device, when locking device unlock cabinet door, control switch disconnect under the drive of locking device.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, and in particular relates to a switch cabinet with linkage function. Background Technology

[0002] Switchgear, primarily composed of circuit breakers, refers to electrical equipment where high and low voltage electrical appliances, busbars, current-carrying conductors, insulators, etc., are assembled in a closed or open metal cabinet according to the requirements of the primary electrical wiring diagram. It serves as a device for receiving and distributing electrical energy in a power system. During equipment maintenance, to ensure the safety of maintenance personnel, control switches need to be added to the switchgear circuitry. Before equipment inspection, these control switches are disconnected to automatically de-energize the equipment and ensure the safety of maintenance personnel. However, in existing technologies such as the switchgear disclosed in patent CN220673124U, the control switches typically require manual opening and closing by maintenance personnel, which raises the issue of forgetting to disconnect the control switches. Summary of the Invention

[0003] The main purpose of this utility model is to provide a switch cabinet with a linkage function. The linkage mechanism links the cabinet door with the opening and closing of the control switch, so that when the cabinet door is opened, the control switch is disconnected, thereby ensuring the safety of maintenance personnel.

[0004] Therefore, the present invention provides a switch cabinet with linkage function, including a cabinet body and a rotatable cabinet door mounted on the cabinet body. The cabinet door is provided with a locking device, the cabinet body is provided with a locking plate, and the inner side of the cabinet door is also provided with a control switch that is linked to the locking device. The control switch is located on the power supply circuit of the cabinet body. When the locking device locks the cabinet door to the cabinet body, the control switch is closed in linkage under the action of the locking device. When the locking device unlocks the cabinet door, the control switch is opened in linkage under the action of the locking device.

[0005] Specifically, the locking device includes a first sliding sleeve fixedly installed on the cabinet door, a latch slidably disposed on the first sliding sleeve, a cam that pushes the latch to move, and a first return spring connected between the latch and the first sliding sleeve. The locking plate is provided with a lock groove that cooperates with the latch, and the wheel shaft of the cam passes through the cabinet door and is connected to the rotating handle on the outside.

[0006] The control switch includes a fixed contact and a moving contact. The fixed contact is mounted on the cabinet door via a mounting base. The moving contact is fixedly connected to an insulating push rod. A second sliding sleeve is fixedly mounted on the cabinet door. The insulating push rod is slidably mounted on the second sliding sleeve. A second return spring is located between the insulating push rod and the second sliding sleeve. The insulating push rod is linked to the cam.

[0007] When the cam drives the latch to insert into the lock groove, the moving contact is reset under the action of the second return spring, so that the fixed contact and the moving contact are in contact, closing the control switch. When the cam drives the push rod to separate the moving contact from the fixed contact and open the control switch, the latch is reset under the action of the first return spring and exits from the lock groove.

[0008] Specifically, both the push rod and the tail end of the latch are provided with an arc-shaped groove that matches the top end of the cam. When the cam pushes the latch into the lock groove, the top end of the cam is engaged in the arc-shaped groove of the latch. When the cam pushes the push rod so that the moving contact contacts the fixed contact, the top end of the cam is engaged in the pushing arc-shaped groove.

[0009] Specifically, the mounting base and the fixed contact are connected by an insulating spring.

[0010] Specifically, the control switch is located above the cam, and the locking tongue is located below the cam.

[0011] Compared with the prior art, the present invention has the following advantages: by setting a linkage mechanism on the cabinet door, the opening and closing of the cabinet door and the control switch are linked, so that when the cabinet door is opened, the control switch is closed in linkage, grounding the switch cabinet, thereby ensuring the safety of maintenance personnel. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is an isometric drawing of the switch cabinet provided in an embodiment of this utility model;

[0014] Figure 2 This is a schematic diagram of the opening of the switch cabinet locking device provided in this embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the switch cabinet locking device being closed according to an embodiment of the present invention;

[0016] 1. Cabinet body; 2. Cabinet door; 3. Locking plate; 4. Control switch; 5. First sliding sleeve; 6. Lock tongue; 7. Cam; 8. First return spring; 9. Lock groove; 10. Rotary handle; 11. Fixed contact; 12. Moving contact; 13. Mounting base; 14. Insulating push rod; 15. Second sliding sleeve; 16. Second return spring; 17. Arc-shaped groove; 18. Insulating spring; 19. Hinge. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] See Figures 1-3 A switch cabinet with linkage function includes a cabinet body 1 and a cabinet door 2 rotatably mounted on the cabinet body 1. The cabinet door 2 is rotatably connected to one side of the cabinet body 1 via a hinge 19. A locking device is provided on the other side of the cabinet door 2. A locking plate 3 is provided on the cabinet body 1. A control switch 4 that is linked with the locking device is also provided on the inner side of the cabinet door 2. The control switch 4 is located on the power supply circuit of the cabinet body 1. When the locking device locks the cabinet door 2 onto the cabinet body 1, the control switch 4 is closed in linkage under the action of the locking device. When the locking device unlocks the cabinet door 2, the control switch 4 is automatically opened in linkage under the action of the locking device.

[0021] This utility model incorporates a linkage mechanism on the cabinet door 2 to link the opening and closing of the cabinet door 2 with the control switch 4. When the cabinet door 2 is in the open position, the control switch 4 is disconnected to de-energize the switch cabinet, thus ensuring the safety of maintenance personnel. When the cabinet door 2 is in the closed position, the control switch 4 is closed to energize the switch cabinet and enable it to operate normally.

[0022] See Figure 2 and Figure 3 The locking device includes a first sliding sleeve 5 fixedly installed on the cabinet door 2, a locking tongue 6 slidably installed on the first sliding sleeve 5, a cam 7 that pushes the locking tongue 6 to move, and a first return spring 8 connected between the locking tongue 6 and the first sliding sleeve 5. The locking plate 3 is provided with a locking groove 9 that cooperates with the locking tongue 6. The axle of the cam 7 passes through the cabinet door 2 and is connected to the outer rotating handle 10. The control switch 4 includes a fixed contact 11 and a moving contact 12. The fixed contact 11 and the moving contact 12 are respectively connected to the power supply return current through wires. The fixed contact 11 is installed on the cabinet door 2 through the mounting base 13. The moving contact 12 is fixedly connected to the insulating push rod 14. A second sliding sleeve 15 is fixedly installed on the cabinet door 2. The insulating push rod 14 is slidably installed on the second sliding sleeve 15. A second return spring 16 is connected between the insulating push rod 14 and the second sliding sleeve 15. Push rod 14 is linked with cam 7. As cam 7 rotates continuously, the top of cam 7 will push the insulating push rod 14 and the locking tongue 6 respectively, causing them to move up and down. When the top of cam 7 pushes the locking tongue 6 and inserts it into the locking groove 9, the insulating push rod 14 is reset under the action of the second return spring 16, causing the moving contact 12 to move downward and contact the locking tongue 6. The control switch 4 is closed, the power supply return to cabinet 1 is conducted, and cabinet 1 is powered normally. When the top of cam 7 pushes the push rod and causes the moving contact 12 to move upward and separate from the fixed contact 11, the control switch 4 is opened. The locking tongue 6 is reset under the action of the first return spring 8 and exits from the locking groove 9. Cabinet door 2 can be opened normally, cabinet 1 is de-energized, and maintenance personnel can carry out maintenance on cabinet 1 under the premise of ensuring the safety of maintenance personnel.

[0023] In this embodiment, by linking the cam 7 with the insulating push rod 14 and the locking tongue 6, the control switch 4 can be automatically disconnected when the cabinet door 2 is opened, thus cutting off the power to the cabinet 1. After the cabinet door 2 is closed, the control switch 4 can be automatically closed, thus automatically restoring the circuit of the cabinet 1. The overall operation is convenient and does not require manual operation of the control switch 4.

[0024] See Figure 2 and Figure 3Specifically, to ensure that the locking device and control switch 4 can be stably kept in the closed position, both the push rod and the tail end of the latch 6 are provided with arc-shaped grooves 17 that cooperate with the top of the cam 7. When the cam 7 pushes the latch 6 into the lock groove 9, the top of the cam 7 is engaged in the arc-shaped groove 17 of the latch 6, thereby keeping the latch 6 in that position. Only after holding the rotating handle 10 and applying a certain twisting force can the top of the cam 7 be disengaged from the arc-shaped groove 17. Similarly, when the cam 7 pushes the push rod so that the moving contact 12 contacts the fixed contact 11, the top of the cam 7 is engaged in the pushing arc-shaped groove 17. Only after holding the rotating handle 10 and applying a certain twisting force can the top of the cam 7 be disengaged from the arc-shaped groove 17, thereby ensuring that the control switch 4 can be stably kept in the open position.

[0025] Understandably, to effectively address the issue of high assembly precision requirements and the potential for cam 7 jamming caused by direct rigid contact between the fixed contact 11 and the moving contact 12, the mounting base 13 is connected to the fixed contact 11 via an insulating spring 18. This design allows for flexible contact between the fixed contact 11 and the moving contact 12, significantly reducing the design and assembly precision requirements of the components. The control switch 4 is positioned above the cam 7, and the locking tongue 6 is positioned below the cam 7.

[0026] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of the invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0027] Meanwhile, if the present invention discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by casting) (except where it is obviously impossible to use an integral forming process).

[0028] Furthermore, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model include states or shapes that are similar to, analogous to, or close to those states or shapes. Any component provided by this utility model can be assembled from multiple individual components or can be a single component manufactured using a one-piece molding process.

[0029] The above embodiments are merely illustrative examples to clearly illustrate the present invention, and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A switch cabinet with linkage function, comprising a cabinet body (1) and a rotatable cabinet door (2) disposed on the cabinet body (1), wherein the cabinet door (2) is provided with a locking device and the cabinet body (1) is provided with a locking plate (3), characterized in that: The cabinet door (2) is also provided with a control switch (4) that is linked to the locking device. The control switch (4) is set on the power supply circuit of the cabinet (1). When the locking device locks the cabinet door (2) on the cabinet (1), the control switch (4) is closed in conjunction with the locking device. When the locking device unlocks the cabinet door (2), the control switch (4) is opened in conjunction with the locking device.

2. The switchgear according to claim 1, characterized in that: The locking device includes a first sliding sleeve (5) fixedly installed on the cabinet door (2), a latch (6) slidably installed on the first sliding sleeve (5), a cam (7) that pushes the latch (6) to move, and a first return spring (8) connected between the latch (6) and the first sliding sleeve (5). The locking plate (3) is provided with a locking groove (9) that cooperates with the latch (6). The axle of the cam (7) passes through the cabinet door (2) and is connected to the rotating handle (10) on the outside. The control switch (4) includes a fixed contact (11) and a moving contact (12). The fixed contact (11) is mounted on the cabinet door (2) via a mounting base (13). The moving contact (12) is fixedly connected to an insulating push rod (14). A second sliding sleeve (15) is fixedly mounted on the cabinet door (2). The insulating push rod (14) is slidably mounted on the second sliding sleeve (15). A second return spring (16) is located between the insulating push rod (14) and the second sliding sleeve (15). The insulating push rod (14) is linked to the cam (7). When the cam (7) drives the latch (6) to insert into the lock groove (9), the moving contact (12) is reset under the action of the second return spring (16), so that the fixed contact (11) and the moving contact (12) come into contact, and the control switch (4) is closed. When the cam (7) drives the push rod to separate the moving contact (12) from the fixed contact (11) and disconnect the control switch (4), the latch (6) is reset under the action of the first return spring (8) and exits from the lock groove (9).

3. The switchgear according to claim 2, characterized in that: Both the push rod and the latch (6) have an arc-shaped groove (17) at their tail ends that mates with the top of the cam (7). When the cam (7) pushes the latch (6) into the lock groove (9), the top of the cam (7) is engaged in the arc-shaped groove (17) of the latch (6). When the cam (7) pushes the push rod so that the moving contact (12) contacts the fixed contact (11), the top of the cam (7) is engaged in the pushing arc-shaped groove (17).

4. The switchgear according to claim 2, characterized in that: The mounting base (13) and the fixed contact (11) are connected by an insulating spring (18).

5. The switchgear according to claim 2, characterized in that: The control switch (4) is located above the cam (7), and the latch (6) is located below the cam (7).

6. The switchgear according to any one of claims 1-5, characterized in that: The cabinet door (2) is rotatably connected to one side of the cabinet body (1) via a hinge (19), and the locking device is located on the other side of the cabinet door (2).

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