Safety protection interlocking device of high-voltage cabinet

Abstract

The utility model discloses a safety protection interlocking device of a high-voltage cabinet. The safety protection interlocking device comprises a high-voltage cabinet body and an interlocking assembly, the high-voltage cabinet body comprises a cabinet and a cabinet door. The cabinet door is hinged and matched with the cabinet through a hinge; the interlocking assembly is arranged on the cabinet door; the interlocking assembly comprises a rotating groove, a rotating block, a rotating shaft, a fixing column, a fixing groove, a spring groove and a volute spiral spring. Two rotating grooves are symmetrically formed in the cabinet door; the rotating block is rotationally arranged in the rotating groove through a rotating shaft; the two fixing columns are symmetrically and fixedly arranged on one side of the inner wall of the cabinet; two fixing grooves are symmetrically formed in the sides, away from each other, of the two rotating blocks and make contact with the fixing columns. Two spring grooves are symmetrically formed in the two sides of the inner wall of the rotating groove. The two volute spiral springs are symmetrically arranged on the rotating shaft in a sleeving manner; the safety protection interlocking device of the high-voltage cabinet is simple and reasonable in structure and ingenious in design, the safety protection effect of the high-voltage cabinet body can be improved, the use cost can be reduced, and the use effect is good by rotating the two rotating blocks in a manner that the two hands of a worker deviate from each other.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switchgear technology, specifically a safety protection interlock device for high-voltage switchgear. Background Technology

[0002] High-voltage switchgear refers to electrical products used in power systems for switching, controlling, or protecting power sources during power generation, transmission, distribution, energy conversion, and consumption. Voltage levels range from 3.6kV to 550kV. High-voltage switchgear mainly includes several categories such as high-voltage circuit breakers, high-voltage disconnect switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices, and high-voltage switchgear. Types of high-voltage switchgear include metal-enclosed armored switchgear, metal-enclosed compartment switchgear, metal-enclosed box-type switchgear, and open switchgear. Their working principle is to control the switching of circuits through circuit breakers, protecting the power system from overload, short circuit, and other faults.

[0003] A high-voltage switchgear safety interlock device, as disclosed in Chinese Utility Model Patent Publication No. CN212935270U, ​​includes a cabinet. A cover plate is hinged to the front of the cabinet, and a locking block is fixedly connected to the back of the cover plate. A slot is provided on the right side of the front of the cabinet, and the locking block engages with the slot. An electric push rod is fixedly connected to the surface of the cabinet, and a plug rod is fixedly connected to the bottom of the electric push rod. A slot is provided on the top of the locking block, and the plug rod is located inside the slot. In this utility model, the cabinet serves to house electrical equipment, the cover plate provides a seal, the locking block and slot secure the cover plate, the electric push rod, plug rod, and slot secure the locking block, and the cabinet itself houses the switch. This interlock device secures the cabinet door, preventing it from opening during high-voltage switchgear operation and ensuring user safety.

[0004] Although the aforementioned interlocking device can fix the cabinet door and prevent it from opening during high-voltage cabinet operation, thus ensuring user safety, the interlocking device achieves its safety protection interlocking function through the telescopic nature of the electric push rod. This not only increases the cost of use but also affects the effectiveness of the interlocking device.

[0005] To improve the safety performance of high-voltage switchgear, interlocking devices are usually installed. However, existing interlocking devices may experience issues during use. Utility Model Content

[0006] The purpose of this utility model is to provide a safety protection interlock device for high-voltage switchgear, so as to solve the problem of high usage cost mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a safety interlocking device for a high-voltage switchgear, comprising a high-voltage switchgear body and an interlocking assembly; the high-voltage switchgear body includes a cabinet and a cabinet door; the cabinet door is hinged to the cabinet via a hinge; the interlocking assembly is arranged on the cabinet door; the interlocking assembly includes a rotating groove, a rotating block, a rotating shaft, a fixing column, and a fixing groove; two rotating grooves are symmetrically provided on the cabinet door; the rotating block is rotatably disposed in the rotating groove via the rotating shaft; two fixing columns are symmetrically fixed to one side of the inner wall of the cabinet; two fixing grooves are symmetrically provided on opposite sides of the two rotating blocks and contact the fixing columns.

[0008] Preferably, the rotating groove is a cylindrical groove, and the center of the rotating groove is on the same straight line as the axis of the rotating shaft.

[0009] Preferably, the rotating block has a V-shaped structure, and the tips of the two rotating blocks are arranged opposite each other.

[0010] Preferably, the fixing groove has an arc-shaped structure, and less than half of the volume of the fixing column is located inside the fixing groove.

[0011] Preferably, the interlocking assembly further includes a spring groove and a spiral spring; two spring grooves are symmetrically formed on both sides of the inner wall of the rotating groove; the two spiral springs are symmetrically sleeved on the rotating shaft, and the two ends of the spiral springs are respectively fixedly connected to the circumferential surface of the rotating shaft and the inner wall of the spring groove.

[0012] Preferably, it also includes a guide block; the guide block is fixed on the rotating block.

[0013] Preferably, the guide block includes a fixing part and a guiding part; the fixing part is fixed on the rotating block; the guiding part has an inclined structure, and the opening direction formed by the two guiding parts is set close to the cabinet door direction.

[0014] Preferably, the guide portion is in contact with the circumferential surface of the fixed column.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, by setting up an interlocking component, uses two rotating blocks that are moved in opposite directions to cause the rotating blocks to drive the guide block to rotate within the rotating groove via the rotating shaft. This causes the spiral spring to coil within the spring groove, preventing the fixed column from contacting the inner wall of the fixed groove, until the rotating block contacts the cabinet door. At this point, the cabinet door is rotated via the hinge, moving the rotating block out of the cabinet. Then, under the elastic force of the spiral spring, the rotating block rotates back to its original position. Compared with the prior art, this utility model has a simple and reasonable structure and ingenious design. By having the operator rotate the two rotating blocks in opposite directions with both hands, it can not only improve the safety protection effect of the high-voltage cabinet body and reduce the risk of accidental contact, but also reduce the cost of use, resulting in better performance.

[0017] 2. This utility model uses a guide block to rotate the cabinet door in the opposite direction via a hinge, causing the circumferential surface of the fixed column to press against the guide part. This causes the guide block to drive the rotating block to rotate within the rotating groove via a rotating shaft, causing the spiral spring to coil within the spring groove until the fixed column contacts the inner wall of the fixed groove. At this point, under the elastic force of the spiral spring, the rotating block will rotate back to its original position, allowing the fixed column to engage with the fixed groove, thus facilitating the interlocking of the cabinet door onto the cabinet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a sectional view of the high-voltage switchgear body of this utility model;

[0021] Figure 4 This is a partial structural breakdown diagram of the present invention;

[0022] Figure 5 For the present utility model Figure 2 Enlarged diagram of point A in the middle.

[0023] In the picture:

[0024] 1. High-voltage switchgear body; 2. Interlocking components; 3. Guide blocks;

[0025] 101. Server rack; 102. Rack door;

[0026] 201. Rotating groove; 202. Rotating block; 203. Rotating shaft; 204. Fixed column; 205. Fixed groove; 206. Spring groove; 207. Spiral spring;

[0027] 301. Fixing part; 302. Guiding part. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1 to 5This utility model provides a technical solution: a safety interlock device for a high-voltage switchgear, comprising a high-voltage switchgear body 1 and an interlocking assembly 2; the high-voltage switchgear body 1 includes a cabinet 101 and a cabinet door 102; the cabinet door 102 is hinged to the cabinet 101 via a hinge; the interlocking assembly 2 is arranged on the cabinet door 102; the interlocking assembly 2 includes a rotating groove 201, a rotating block 202, a rotating shaft 203, a fixing post 204, a fixing groove 205, a spring groove 206, and a spiral spring 207; two rotating grooves 201 are symmetrically provided on the cabinet door 102; the rotating block 202 is rotatably disposed in the rotating groove 201 via the rotating shaft 203; two fixing posts 204 are symmetrically fixed on one side of the inner wall of the cabinet 101; two fixing grooves 205 are symmetrically provided on opposite sides of the two rotating blocks 202 and contact the fixing posts 204, to avoid the rotating blocks 202 When rotating, the fixed post 204 is engaged in the fixed groove 205, and a chamfer can be provided at the corner of the fixed groove 205; the rotating groove 201 is a cylindrical groove, and the center of the rotating groove 201 is on the same straight line as the axis of the rotating shaft 203; the rotating block 202 has a V-shaped structure, and the tips of the two rotating blocks 202 are set opposite each other, so as to facilitate the two rotating blocks 202 to rotate away from each other by turning the rotating blocks 202; the fixed groove 205 has an arc-shaped structure, and less than half of the volume of the fixed post 204 is located in the fixed groove 205, so as to facilitate the fixed post 204 to be engaged in the fixed groove 205; two spring grooves 206 are symmetrically opened on both sides of the inner wall of the rotating groove 201; two spiral springs 207 are symmetrically sleeved on the rotating shaft 203, and the two ends of the spiral springs 207 are fixedly connected to the circumferential surface of the rotating shaft 203 and the inner wall of the spring groove 206, respectively.

[0030] This invention, through the setting of an interlocking component 2, allows two rotating blocks 202 to be moved in opposite directions. These rotating blocks 202, via a rotating shaft 203, drive a guide block 3 to rotate within a rotating groove 201. This causes a spiral spring 207 to coil within a spring groove 206, preventing the fixed column 204 from contacting the inner wall of the fixed groove 205, until the rotating block 202 contacts the cabinet door 102. At this point, the cabinet door 102 is rotated via a hinge, moving the rotating block 202 out of the cabinet 101. Then, under the elastic force of the spiral spring 207, the rotating block 202 rotates back to its original position. Compared to existing technologies, this invention has a simple and reasonable structure and ingenious design. By having the operator rotate the two rotating blocks 202 in opposite directions, it not only improves the safety protection effect of the high-voltage cabinet body 1 and reduces the risk of accidental contact, but also reduces operating costs, resulting in better performance.

[0031] As a preferred embodiment, it also includes a guide block 3; the guide block 3 is fixed on the rotating block 202; the guide block 3 includes a fixing part 301 and a guide part 302; the fixing part 301 is fixed on the rotating block 202; the guide part 302 has an inclined structure, and the opening direction formed by the two guide parts 302 is set close to the direction of the cabinet door 102; the guide part 302 is in contact with the circumferential surface of the fixing column 204; when the cabinet door 102 rotates, the guide block 3 is not in contact with the inner wall of the cabinet 101; when the cabinet 101 and the cabinet door 102 are in contact, the fixing column 204 and the fixing groove 205 are in the same horizontal state.

[0032] This utility model, by setting a guide block 3, allows the cabinet door 102 to rotate in the opposite direction via a hinge, causing the circumferential surface of the fixed post 204 to press against the guide part 302. This causes the guide block 3 to drive the rotating block 202 to rotate within the rotating groove 201 via the rotating shaft 203, causing the spiral spring 207 to coil within the spring groove 206 until the fixed post 204 contacts the inner wall of the fixed groove 205. At this point, under the elastic force of the spiral spring 207, the rotating block 202 will rotate back to its original position, allowing the fixed post 204 to engage with the fixed groove 205, thus facilitating the interlocking of the cabinet door 102 onto the cabinet 101.

[0033] Working principle: When the cabinet door 102 is opened, the two rotating blocks 202 are moved in opposite directions, causing the rotating blocks 202 to drive the guide block 3 to rotate within the rotating groove 201 via the rotating shaft 203. This causes the spiral spring 207 to coil within the spring groove 206, preventing the fixed post 204 from contacting the inner wall of the fixed groove 205, until the rotating block 202 contacts the cabinet door 102. At this point, the cabinet door 102 is rotated via the hinge, causing the rotating block 202 to move out of the cabinet 101. Then, under the elastic force of the spiral spring 207, the rotating block 202 rotates. When the cabinet door 102 is closed, rotate it in the opposite direction via the hinge. This causes the circumferential surface of the fixed post 204 to press against the guide part 302, which in turn causes the guide block 3 to drive the rotating block 202 to rotate within the rotating groove 201 via the rotating shaft 203. This causes the spiral spring 207 to coil within the spring groove 206 until the fixed post 204 contacts the inner wall of the fixed groove 205. At this point, under the elastic force of the spiral spring 207, the rotating block 202 will rotate back to its original position, allowing the fixed post 204 to engage with the fixed groove 205.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] 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 safety protection interlock device for a high-voltage switchgear, characterized in that, The system includes a high-voltage cabinet body (1) and an interlocking assembly (2); the high-voltage cabinet body (1) includes a cabinet (101) and a cabinet door (102); the cabinet door (102) is hinged to the cabinet (101) via a hinge; the interlocking assembly (2) is arranged on the cabinet door (102); the interlocking assembly (2) includes a rotating groove (201), a rotating block (202), a rotating shaft (203), a fixing column (204), and a fixing groove (205); two rotating grooves (201) are symmetrically opened on the cabinet door (102); the rotating block (202) is rotatably disposed in the rotating groove (201) via the rotating shaft (203); two fixing columns (204) are symmetrically fixed on one side of the inner wall of the cabinet (101); two fixing grooves (205) are symmetrically opened on opposite sides of the two rotating blocks (202) and contact the fixing columns (204).

2. The safety protection interlock device for a high-voltage switchgear according to claim 1, characterized in that, The rotating groove (201) is a cylindrical groove, and the center of the rotating groove (201) is on the same straight line as the axis of the rotating shaft (203).

3. The safety protection interlock device for a high-voltage switchgear according to claim 2, characterized in that, The rotating block (202) has a V-shaped structure, and the tips of the two rotating blocks (202) are arranged opposite each other.

4. A safety protection interlock device for a high-voltage switchgear according to claim 3, characterized in that, The fixing groove (205) has an arc-shaped structure, and the fixing column (204) has less than half of its volume located inside the fixing groove (205).

5. A safety protection interlock device for a high-voltage switchgear according to claim 4, characterized in that, The interlocking assembly (2) also includes a spring groove (206) and a spiral spring (207); two spring grooves (206) are symmetrically opened on both sides of the inner wall of the rotating groove (201); the two spiral springs (207) are symmetrically sleeved on the rotating shaft (203), and the two ends of the spiral springs (207) are respectively fixedly connected to the circumferential surface of the rotating shaft (203) and the inner wall of the spring groove (206).

6. A safety protection interlock device for a high-voltage switchgear according to claim 5, characterized in that, It also includes a guide block (3); the guide block (3) is fixed on the rotating block (202).

7. A safety protection interlock device for a high-voltage switchgear according to claim 6, characterized in that, The guide block (3) includes a fixing part (301) and a guide part (302); the fixing part (301) is fixed on the rotating block (202); the guide part (302) is an inclined structure, and the opening direction formed by the two guide parts (302) is set close to the direction of the cabinet door (102).

8. A safety protection interlock device for a high-voltage switchgear according to claim 7, characterized in that, The guide part (302) is in contact with the circumferential surface of the fixed post (204).

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