High-voltage incoming line cabinet self-locking structure

Abstract

The utility model discloses a high -voltage incoming line cabinet self -locking structure relates to incoming line cabinet equipment technical field, including cabinet and cabinet door, be provided with locking mechanism between cabinet door and cabinet. The locking mechanism includes locking part, adjusting part and fixed part. Locking part passes through spring one drive lock bolt one and inserts the locking groove in fixed part, realizes the automatic lock -out when cabinet door closes, when locking, adjusting part and fixed part all do not contact with locking part, make locking part be in isolated state, guarantee locking effect, adjusting part drives lifting plate and lock bolt two to go up and down through handle, when unlocking, need first drive adjusting part through handle, make the tab on lock bolt two and the push plate of locking part abut, then through the push -pull rod of pressing fixed part, through the ejection plate push lock bolt two, and then through the tab linkage push plate makes lock bolt one retract, realize unlocking, realize the automatic lock -out of cabinet door, avoid the security risk of forgetting locking, and effectively prevent misoperation through two -step operation unlocking.

Description

Technical Field

[0001] This utility model relates to the technical field of incoming line cabinet equipment, specifically to a self-locking structure for a high-voltage incoming line cabinet. Background Technology

[0002] High-voltage incoming line cabinets are core equipment in power distribution systems, undertaking important functions such as receiving, switching on, and protecting electrical energy. Their internal structure is complex, containing high-voltage live components such as circuit breakers, disconnectors, and grounding switches. Improper operation can easily lead to serious arcing short circuits, equipment burnout, or even personal injury accidents.

[0003] In traditional incoming line cabinets, most use a door with a latch to lock the door shut. This locking method requires manual confirmation and largely depends on the operator's conscientiousness and adherence to procedures. It is easy for users to forget to lock the door with the latch, resulting in the door being open and allowing dust and rainwater to enter the incoming line cabinet, causing short circuits in the internal components. Based on this, this solution provides a self-locking structure for high-voltage incoming line cabinets to solve the above-mentioned problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, a self-locking structure for a high-voltage incoming line cabinet is provided. This technical solution solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A self-locking structure for a high-voltage incoming line switchgear includes a cabinet and a door rotatably mounted on the cabinet. A locking mechanism is provided between the cabinet and the door. The locking mechanism includes a locking part, an adjusting part, and a fixing part. The locking part includes a fixed frame fixedly mounted on the door. A locking tongue is slidably connected to the side wall of the fixed frame. The right end of the locking tongue cooperates with the fixing part to achieve fixation. A limit ring is fixedly connected to the left end of the locking tongue. An elastic element is fixedly connected to the left end of the limit ring. A push plate is fixedly connected to the lower end of the limit ring. The adjusting part is installed in the lower part of the fixed frame and is located below the push plate. The fixing part is fixedly mounted on the door.

[0007] Preferably, the elastic element includes a fixed cylinder fixedly installed on the fixed frame, a spring is fixedly installed inside the fixed cylinder, an anti-detachment plate is fixedly connected to the right end of the spring, a moving rod is fixedly connected to the right end of the anti-detachment plate, and the right end of the moving rod is fixedly connected to the limiting ring.

[0008] Preferably, the adjusting part includes a lifting plate slidably mounted on a fixed frame. Both ends of the fixed frame are provided with sliding grooves for cooperating with the lifting plate. A sliding seat is fixedly connected to the lifting plate, and a sliding rod is slidably connected inside the sliding seat. An anti-detachment plate is fixedly connected to the left end of the sliding rod, and a locking tongue is fixedly connected to the right end of the sliding rod. A spring is fixedly connected between the locking tongue and the sliding seat and is sleeved on the sliding rod. A protruding plate is fixedly installed on the locking tongue. Several springs are fixedly connected between the lower end of the lifting plate and the fixed frame. A lifting component for driving the lifting plate to move is provided on the right side of the springs.

[0009] Preferably, the lifting component includes a rotating shaft rotatably mounted on the door, with a handle and a drive rod fixedly connected to the front and rear ends of the rotating shaft, respectively. A rotating plate is rotatably mounted on the right end of the drive rod, and a spring is fixedly connected between the rotating plate and the fixed frame. A limit block is fixedly mounted on the lifting plate.

[0010] Preferably, the fixing part includes a fixing frame fixedly installed on the door, and a locking groove is provided at the left end of the fixing frame; a push-pull rod is slidably connected to the right end of the fixing frame; a top plate is fixedly connected to the left end of the push-pull rod; a limiting frame is provided on the right side of the top plate and fixedly installed on the push-pull rod, and a spring five sleeved on the push-pull rod is fixedly connected between the limiting frame and the fixing frame, and limiting grooves for cooperating with the limiting frame are provided on both sides of the locking groove.

[0011] Compared with the prior art, this utility model proposes a self-locking structure for a high-voltage incoming line cabinet, which has the following beneficial effects:

[0012] This invention achieves automatic locking between the cabinet door and the cabinet through the coordinated use of the locking mechanism and the cabinet door. By pushing the cabinet door closer to the cabinet, the locking tongue inserts into the locking groove of the fixing part. Under the continuous elastic force of the spring, the anti-detachment plate and the moving rod are stably pushed to the right, thus keeping the locking tongue extended to the right and stationary in the locking groove, completing the locking of the cabinet door and the cabinet. At this time, the adjusting part is located at the bottom of the locking part under the action of the spring and does not contact the push plate in the locking part. Similarly, the top plate of the fixing part used to push the unlocking part does not contact the locking part, so that the locking part is in an isolated state, thereby effectively ensuring the overall locking effect and automatically locking the locking tongue, which is convenient for fixing and locking the cabinet door. This avoids the problem of forgetting to lock the cabinet door and causing it to be open, thus extending the service life of the incoming cabinet to a certain extent and making the incoming cabinet more convenient to use, thereby improving the practicality of the incoming cabinet. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the locking mechanism in this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the locking mechanism in this utility model;

[0016] Figure 4 This is a schematic diagram of the locking part and the adjusting part in this utility model;

[0017] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the diagram;

[0018] Figure 6 This is a schematic diagram of the internal structure of the fixing part in this utility model.

[0019] The numbers on the map are:

[0020] 1. Cabinet / Box; 2. Cabinet Door; 3. Locking Mechanism;

[0021] 31. Locking part; 311. Fixing frame; 312. Sliding groove; 313. Fixing cylinder; 314. Moving rod; 315. Locking tongue 1; 316. Limiting ring; 317. Push plate; 318. Spring 1; 319. Anti-detachment plate 1;

[0022] 32. Adjustment unit; 321. Lifting plate; 322. Sliding seat; 323. Slide rod; 324. Locking tongue II; 325. Anti-detachment plate II; 326. Spring II; 327. Protruding plate; 328. Spring III; 329. Rotating shaft; 3210. Handle; 3211. Drive rod; 3212. Rotating plate; 3213. Spring IV; 3214. Limiting block;

[0023] 33. Fixing part; 331. Fixing bracket; 332. Locking groove; 333. Push-pull rod; 334. Ejector plate; 335. Limiting bracket; 336. Spring five; 337. Limiting groove. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0025] Reference Figure 1-3As shown, a self-locking structure for a high-voltage incoming line cabinet includes a cabinet 1 and a door 2 rotatably mounted on the cabinet 1. A locking mechanism 3 is provided between the cabinet 1 and the door 2. The locking mechanism 3 includes a locking part 31, an adjusting part 32, and a fixing part 33. The locking part 31 includes a fixing frame 311 fixedly mounted on the door 2. A locking tongue 315 is slidably connected to the side wall of the fixing frame 311. The right end of the locking tongue 315 cooperates with the fixing part 33 to achieve fixation. A limit ring 316 is fixedly connected to the left end of the locking tongue 315. An elastic element is fixedly connected to the left end of the limit ring 316. A push plate 317 is fixedly connected to the lower end of the limit ring 316. The adjusting part 32 is installed in the lower part of the fixing frame 311 and is located on the lower side of the push plate 317. The fixing part 33 is fixedly mounted on the door 2.

[0026] Furthermore, through the cooperative use of the locking mechanism 3 and the cabinet door 2, an automatic locking effect is achieved between the cabinet door 2 and the cabinet 1: by pushing the cabinet door 2 closer to the cabinet 1, the locking tongue 315 is inserted into the locking groove 332 of the fixing part 33, and under the continuous elastic force of the spring 318, the anti-detachment plate 319 and the moving rod 314 are stably pushed to the right, thereby keeping the locking tongue 315 extended to the right and remaining in the locking groove 332, completing the locking of the cabinet door 2 and the cabinet 1. At this time, the adjusting part 32 as a whole is under the action of the spring 328. The bottom of the locking part 31 is not in contact with the push plate 317 in the locking part 31, and the top plate 334 of the fixing part 33 used to push the unlocking is also not in contact with the locking part 31, so that the locking part 31 is in an isolated state at this time, thereby effectively ensuring the overall locking effect and realizing that the locking part 31 can automatically lock, which makes it easy to fix and lock the cabinet door 2, thus avoiding the problem of forgetting to lock the cabinet door 2 and causing the cabinet door 2 to be open. To a certain extent, it extends the service life of the incoming line cabinet and makes the incoming line cabinet more convenient to use, thereby improving the practicality of the incoming line cabinet.

[0027] Reference Figure 1-3 As shown, specifically in this embodiment, the elastic element includes a fixed cylinder 313 fixedly installed on the fixed frame 311. A spring 318 is fixedly installed inside the fixed cylinder 313. An anti-detachment plate 319 is fixedly connected to the right end of the spring 318. A moving rod 314 is fixedly connected to the right end of the anti-detachment plate 319. The right end of the moving rod 314 is fixedly connected to the limiting ring 316.

[0028] Furthermore: When the cabinet door 2 is closed, the inclined surface of the locking tongue 315 of the locking part 31 contacts the surface of the fixing part 33, which in turn compresses its own spring 318, allowing it to slide into the locking groove 332. After the locking tongue 315 is in place, under the continuous elastic force of the spring 318, it stably pushes the anti-detachment plate 319 and the moving rod 314 to the right, thereby keeping the locking tongue 315 extended to the right and stably staying in the locking groove 332, thus completing the locking of the cabinet door 2 and the cabinet 1.

[0029] Reference Figure 1-3 As shown, specifically in this embodiment, the adjusting part 32 includes a lifting plate 321 slidably mounted on the fixed frame 311. Sliding grooves 312 for cooperating with the lifting plate 321 are provided on both end sidewalls of the fixed frame 311. A sliding seat 322 is fixedly connected to the lifting plate 321, and a sliding rod 323 is slidably connected inside the sliding seat 322. A second anti-detachment plate 325 is fixedly connected to the left end of the sliding rod 323, and a second locking tongue 324 is fixedly connected to the right end of the sliding rod 323. A second spring 326 sleeved on the sliding rod 323 is fixedly connected between the second locking tongue 324 and the sliding seat 322. A protruding plate 327 is fixedly installed on the second locking tongue 324. Several third springs 328 are fixedly connected between the lower end of the lifting plate 321 and the fixed frame 311. A lifting component for driving the lifting plate 321 to move is provided on the right side of the third spring 328.

[0030] Furthermore: the lifting plate 321 can be driven to move up and down inside the sliding groove 312 by the lifting component. When it moves up into place, the second locking tongue 324 is in a state of extending to the right under the action of the second spring 326, and the length of the extension is the same as that of the first locking tongue 315. The protruding plate 327 on it just abuts against the lower right side of the push plate 317 and is in a ready state.

[0031] Reference Figure 1-3 As shown, specifically in this embodiment, the lifting component includes a rotating shaft 329 rotatably mounted on the door 2. The front and rear ends of the rotating shaft 329 are respectively fixedly connected to a handle 3210 and a drive rod 3211. A rotating plate 3212 is rotatably mounted on the right end of the drive rod 3211. A spring 3213 is fixedly connected between the rotating plate 3212 and the fixed frame 311. A limit block 3214 is fixedly mounted on the lifting plate 321.

[0032] Furthermore: When it is necessary to unlock the cabinet door 2 and cabinet 1, the handle 3210 is turned downwards. The handle 3210 drives the drive rod 3211 to rotate upwards via the pivot 329. When the drive rod 3211 rotates upwards, it lifts the lifting plate 321. At the same time, a limit block 3214 is set to limit the drive rod 3211 to prevent it from overturning, while the spring 3213 is used to reset the drive rod 3211.

[0033] Reference Figure 1-3 As shown, specifically in this embodiment, the fixing part 33 includes a fixing frame 331 fixedly installed on the box door 2. The left end of the fixing frame 331 is provided with a locking groove 332. The right end of the fixing frame 331 is slidably connected to a push-pull rod 333. The left end of the push-pull rod 333 is fixedly connected to an ejector plate 334. The right side of the ejector plate 334 is provided with a limiting frame 335 fixedly installed on the push-pull rod 333. A spring 336 sleeved on the push-pull rod 333 is fixedly connected between the limiting frame 335 and the fixing frame 331. Both sides of the locking groove 332 are provided with limiting grooves 337 for cooperating with the limiting frame 335.

[0034] Furthermore: When the lifting plate 321 is moved to its position by the lifting mechanism, its second locking tongue 324 extends to a height coaxial with the ejector plate 334. At this time, by pressing the push-pull rod 333, the push-pull rod 333 drives the second locking tongue 324 through the ejector plate 334, which in turn causes the second locking tongue 324 to drive the convex plate 327. The convex plate 327 then pushes out the push plate 317, thereby causing the second locking tongue 324 and the first locking tongue 315 to move out of the locking groove 332 simultaneously, thus quickly releasing the lock between the cabinet door 2 and the cabinet 1. Opening the door requires first turning the handle 3210 and then pressing the push-pull rod 333. These two steps constitute a simple "anti-misoperation" mechanism to prevent the cabinet door 2 from being accidentally opened.

[0035] The working principle of this utility model is as follows: When closing the door, simply push the cabinet door 2 to move it closer to the cabinet 1. The locking part 31, which is fixedly installed on the cabinet door 2, moves accordingly. The inclined surface of the locking tongue 315 on the locking tongue 315 will first contact the surface of the fixing part 33. Under the action of the contact force, the locking tongue 315 receives a leftward reaction force, which pushes the moving rod 314 to compress the spring 318. The locking tongue 315 then retracts. When the cabinet door is completely closed, the locking tongue 315 is exactly aligned with the locking groove 332 on the fixing part 33. At this time, the compressed spring 318 releases its elasticity, pushing the anti-detachment plate 319 and the moving rod 314 to move to the right, and stably pushing the locking tongue 315 into the locking groove 332.

[0036] At this time, under the continuous elastic force of the spring 318, the locking tongue 315 remains extended and is locked in the locking groove 332, thereby realizing the automatic locking of the cabinet door and the cabinet; and in this state, the lifting plate 321 of the adjusting part 32 is at the lowest position under the action of the spring 328 and does not contact the push plate 317 of the locking part 31; the ejector plate 334 of the fixing part 33 also does not contact the locking part 31, and the entire locking part 31 is in an "isolated" stable locking state.

[0037] When the cabinet door needs to be opened, the operator turns the handle 3210 downwards. The handle 3210 drives the drive rod 3211 to rotate upwards via the pivot 329. The drive rod 3211 pushes the lifting plate 321 upwards, causing it to overcome the elastic force of the spring 328 and slide upwards along the sliding groove 312. After the lifting plate 321 moves into place, the locking tongue 324 on it extends to the right under the elastic force of the spring 326. At this time, the height of the right end of the locking tongue 324 is aligned with the ejector plate 334 of the fixing part 33, and the protrusion 327 on the locking tongue 324 moves to the lower right of the push plate 317 of the locking part 31 and abuts against the push plate 317.

[0038] Subsequently, by pressing the push-pull rod 333 of the fixing part 33 inward, the push-pull rod 333 pushes the ejector plate 334 to move to the left. The ejector plate 334 then pushes the already positioned locking tongue 324 to move to the left. The protruding plate 327 on it pushes the push plate 317 that is in contact with it. The push plate 317 drives the limiting ring 316 and the moving rod 314 to move to the left together, thereby compressing the spring 318 and pulling the locking tongue 315 back from the locking groove 332 of the fixing part 33. This causes the locking tongue 324 and the locking tongue 315 to move out of the locking groove synchronously, thereby quickly releasing the lock between the cabinet door 2 and the cabinet 1, and the cabinet door 2 can be opened.

[0039] After releasing the handle 3210 and the push-pull rod 333, each component automatically resets under the action of the corresponding springs 328, 3213, and 336, preparing for the next automatic locking.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-locking structure for a high-voltage incoming line switchgear, characterized in that, It includes a cabinet (1) and a door (2) rotatably mounted on the cabinet (1). A locking mechanism (3) is provided between the cabinet (1) and the door (2). The locking mechanism (3) includes a locking part (31), an adjusting part (32) and a fixing part (33). The locking part (31) includes a fixed frame (311) fixedly installed on the door (2). A locking tongue (315) is slidably connected to the side wall of the fixed frame (311). The right end of the locking tongue (315) cooperates with the fixing part (33) to achieve fixation. A limiting ring (316) is fixedly connected to the left end of the locking tongue (315). An elastic element is fixedly connected to the left end of the limiting ring (316). A push plate (317) is fixedly connected to the lower end of the limiting ring (316). The adjusting part (32) is installed in the lower part of the fixed frame (311) and is located on the lower side of the push plate (317). The fixing part (33) is fixedly installed on the door (2).

2. The self-locking structure of a high-voltage incoming line cabinet according to claim 1, characterized in that: The elastic element includes a fixed cylinder (313) fixedly installed on a fixed frame (311). A spring (318) is fixedly installed inside the fixed cylinder (313). An anti-detachment plate (319) is fixedly connected to the right end of the spring (318). A moving rod (314) is fixedly connected to the right end of the anti-detachment plate (319). The right end of the moving rod (314) is fixedly connected to a limiting ring (316).

3. The self-locking structure of a high-voltage incoming line cabinet according to claim 1, characterized in that: The adjustment part (32) includes a lifting plate (321) slidably mounted on a fixed frame (311). The two side walls of the fixed frame (311) are provided with sliding grooves (312) for cooperating with the lifting plate (321). A sliding seat (322) is fixedly connected to the lifting plate (321). A sliding rod (323) is slidably connected inside the sliding seat (322). The left end of the slide rod (323) is fixedly connected to the anti-detachment plate two (325), the right end of the slide rod (323) is fixedly connected to the locking tongue two (324), the locking tongue two (324) and the sliding seat (322) are fixedly connected to the spring two (326) sleeved on the slide rod (323), and the locking tongue two (324) is fixedly installed with the protrusion plate (327); A plurality of springs (328) are fixedly connected between the lower end of the lifting plate (321) and the fixed frame (311). A lifting component for driving the lifting plate (321) to move is provided on the right side of the springs (328).

4. The self-locking structure of a high-voltage incoming line cabinet according to claim 3, characterized in that: The lifting component includes a rotating shaft (329) rotatably mounted on the door (2). The front and rear ends of the rotating shaft (329) are respectively fixedly connected to a handle (3210) and a drive rod (3211). A rotating plate (3212) is rotatably mounted on the right end of the drive rod (3211). A spring (3213) is fixedly connected between the rotating plate (3212) and the fixed frame (311). A limit block (3214) is fixedly mounted on the lifting plate (321).

5. The self-locking structure of a high-voltage incoming line cabinet according to claim 1, characterized in that: The fixing part (33) includes a fixing bracket (331) fixedly installed on the box door (2), and a locking groove (332) is provided at the left end of the fixing bracket (331); a push-pull rod (333) is slidably connected to the right end of the fixing bracket (331). The left end of the push-pull rod (333) is fixedly connected to the ejector plate (334); the right side of the ejector plate (334) is provided with a limiting bracket (335) fixedly installed on the push-pull rod (333), and a spring five (336) sleeved on the push-pull rod (333) is fixedly connected between the limiting bracket (335) and the fixing bracket (331), and both sides of the locking groove (332) are provided with limiting grooves (337) for cooperating with the limiting bracket (335).

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