Combined low-voltage power distribution cabinet

Abstract

The invention discloses a combined low-voltage power distribution cabinet, and relates to the technical field of power distribution cabinets, the combined low-voltage power distribution cabinet comprises a power distribution cabinet body and a plurality of static contact bodies, a plurality of positioning assemblies are arranged in the power distribution cabinet body, and each positioning assembly comprises a sliding plate. According to the combined low-voltage power distribution cabinet, when the functional drawer body needs to be moved out of the power distribution cabinet body, firstly, extrusion on two push blocks is relieved, two lead screws are made to rotate reversely, two lifting frames are driven to move upwards, limiting on the functional drawer body is relieved, and then the functional drawer body can be moved out; when the functional drawer body is inserted into the power distribution cabinet body, the pointer in the prompter body is rotated to a certain angle, and when the functional drawer body is inserted into the power distribution cabinet body and the threaded pipe is pushed to reversely rotate to the position where the pointer is reset, the prompter body can release sound outwards to prompt a worker that the functional drawer body is reset. And the static contact body and the moving contact body are combined.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically a modular low-voltage power distribution cabinet. Background Technology

[0002] Modular low-voltage switchgear is a modularly designed complete set of low-voltage power distribution equipment. It is a core terminal device in the low-voltage power distribution system. Its main function is to distribute, control, protect, and monitor the electrical energy from the upper-level power distribution network and transmit it to various terminal electrical devices. All its functional units are standardized modules that can be flexibly matched and expanded according to user needs. Its internal circuit breakers, fuses, transformers, and instrument components are all plug-in modules. During installation, maintenance, and replacement, there is no need to disconnect the entire system; only the corresponding modules need to be replaced, which greatly improves operation and maintenance efficiency. The voltage level of modular low-voltage switchgear is in the low-voltage range of 380V / 220V. It is a terminal component in the large-scale power grid power supply system. Located at the end of the power system, its role in intelligent dispatching scenarios is to supply power to auxiliary facilities of the dispatch center, such as non-core loads like lighting, office computers, air conditioners, and printers.

[0003] Existing drawer-type low-voltage distribution cabinets, as a type of modular low-voltage distribution cabinet, typically use ordinary sliding rails for the drawers. These drawers have low processing precision, and are prone to lateral deviation and jamming when being pushed in. Furthermore, the ends of the moving and stationary contacts are mostly flat, lacking guide cone surfaces or chamfered structures. If the drawer is pushed in at a slightly off angle, the moving contact will directly hit the edge of the stationary contact, preventing it from sliding smoothly into the engagement position. This results in misalignment between the moving and stationary contacts, preventing them from being fully inserted into the engagement depth. If forced in, it can also cause contact deformation, creating a permanent connection obstacle.

[0004] Therefore, we propose a modular low-voltage distribution cabinet to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a modular low-voltage distribution cabinet to solve the problem mentioned in the background art that drawer-type low-voltage distribution cabinets are prone to misalignment and docking of moving contacts and stationary contacts, resulting in contact deformation and permanent docking obstacles.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined low-voltage distribution cabinet, comprising a distribution cabinet body and multiple stationary contact bodies. The distribution cabinet body contains multiple positioning components, each including a sliding plate. One end of each sliding plate is fixedly connected to a mounting bracket for positioning. A prompter body is located near one edge of the top of each sliding plate. A threaded tube is provided on the outer surface of each prompter body. Positioning blocks that can move up and down are located near both edges of the outer surface of each sliding plate. The distribution cabinet body also contains multiple pull-out components, each including a functional drawer body. A moving contact body is coupled to the outer surface of each functional drawer body. A sliding rod is fixed to the bottom of each functional drawer body near both edges. A connecting rod for pushing a push block is slidably connected inside each sliding rod. A positioning groove for limiting the positioning block is also provided at the top of each sliding rod.

[0007] Preferably, each of the plurality of positioning components further includes a reducer, the output ends of the plurality of reducers are fixedly connected to a rotating shaft, the input ends of the plurality of reducers are fixedly connected to a connecting shaft, the outer surfaces of the plurality of connecting shafts are fixedly fitted with drive gears, and the outer surfaces of the plurality of drive gears are coupled to a limiting internal gear ring.

[0008] Preferably, a lead screw is movably embedded in the inner walls of both sides of the plurality of mounting brackets, a limiting tube is movably embedded in the inner walls of both sides of the plurality of mounting brackets, and a first gear is fixedly installed at one end of the plurality of lead screws.

[0009] Preferably, the outer surfaces of the plurality of first gears are meshed with second gears, the outer surfaces of the plurality of second gears are meshed with tooth rows, the top ends of the plurality of tooth rows are fixedly mounted with lifting frames, and the inner walls on both sides of the plurality of mounting frames are provided with helical springs.

[0010] Preferably, each of the multiple pull-out components further includes multiple rotating handles, and each of the multiple functional drawer bodies has an installation block fixedly connected to its outer surface. Each of the multiple installation blocks has a return spring on its top, and each of the multiple return springs has a positioning sleeve on its top.

[0011] Preferably, the outer surfaces of both sides of the plurality of sliding plates are fixedly connected to the inner walls of the distribution cabinet body, one end of the plurality of rotating shafts is fixedly connected to the knob portion in the plurality of indicator bodies, and one end of the plurality of connecting shafts is fixedly connected to one end of the plurality of threaded tubes.

[0012] Preferably, the outer surfaces of the plurality of threaded tubes are threadedly connected to the inner walls of the plurality of functional drawer bodies, the outer surfaces of the plurality of lead screws are threadedly connected to the inner walls of the plurality of push blocks, and the outer surfaces of the plurality of limiting tubes slide against the inner walls of the plurality of push blocks.

[0013] Preferably, each pair of adjacent second gears in the plurality of second gears forms a group, and the outer surface of each group of second gears is rotatably connected to the inner wall of the plurality of mounting frames. Each pair of adjacent tooth rows in the plurality of tooth rows forms a group, and the outer surface of each group of tooth rows is slidably connected to the inner wall of the plurality of mounting frames.

[0014] Preferably, the multiple lifting frames are fixedly connected to the top of the multiple positioning blocks via multiple telescopic rods, one end of the multiple helical springs is fixedly connected to the outer surface of the multiple push blocks, and each pair of adjacent connecting rods forms a group, with the outer surface of each group of connecting rods sliding against the inner walls of both sides of the multiple sliding plates.

[0015] Preferably, each pair of adjacent links in the plurality of links forms a group, and the outer surface of each group of links is rotatably connected to the outer surface of the plurality of rotating handles by hinges. The inner diameter of the plurality of positioning grooves is matched with the outer diameter of the plurality of positioning blocks. The bodies of the plurality of stationary contacts are fixedly connected to the outer surface of the power distribution cabinet body by auxiliary rods.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When it is necessary to remove the functional drawer body from the inside of the distribution cabinet body, first release the pressure on the two push blocks, so that the two lead screws rotate in opposite directions, driving the two lifting frames to move upward, releasing the limit on the functional drawer body, and then the functional drawer body can be removed. Rotate the pointer in the indicator body to a certain angle. When the functional drawer body is reinserted into the distribution cabinet body, push the threaded tube to rotate in the opposite direction until the pointer is reset. The indicator body will then release an audible sound to indicate to the staff that the functional drawer body has been reset and that the stationary contact body and the moving contact body have been successfully engaged. This solves the problem in the existing technology of drawer-type low-voltage distribution cabinets where misalignment of the moving and stationary contacts leads to contact deformation and permanent connection obstacles.

[0017] 2. After the functional drawer body is inserted into the slide plate, the functional drawer body can be pushed towards the stationary contact body. During the movement of the slide rod, the two connecting rods move forward and push the two push blocks forward, causing the two lead screws to rotate, which in turn causes the two positioning blocks to move downward, shortening the telescopic rod set on the top of the positioning block. When the two slide rods move forward to the position where the two positioning slots correspond to the positioning blocks, the positioning blocks will insert into the interior of the positioning slots under the combined action of their own weight and the toothed rack, thus achieving the positioning of the two slide rods, thereby achieving the positioning of the functional drawer body and the moving contact body.

[0018] 3. In the process of using drawer-type low-voltage distribution cabinet, in order to prevent insufficient contact reliability between the stationary contact body and the moving contact body, when it is necessary to put one of the functional drawer bodies into the inside of the distribution cabinet body, first insert the two slide bars set at the bottom of the functional drawer body into the two T-shaped slots in the corresponding slide plates. At this time, the corresponding threaded tube is inserted into the inside of the functional drawer body and engages with the inner wall of the functional drawer body, thereby achieving precise positioning of the moving contact body set on the back of the functional drawer body. Attached Figure Description

[0019] Figure 1 This is a frontal perspective view of the present invention; Figure 2 This is a side perspective view of the present invention; Figure 3 This is a perspective view of the main body of the power distribution cabinet of the present invention; Figure 4 This is a partial sectional perspective view of the positioning component of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a perspective view of the skateboard portion of the present invention; Figure 7 This is a perspective cross-sectional view of the skateboard portion of the present invention; Figure 8 This is a perspective view of the connecting shaft portion of the present invention. Figure 9 This is a perspective view of the unfolded structure of the functional drawer body of the present invention; Figure 10 This is a perspective view of the threaded tube portion of the present invention. Figure 11 for Figure 10 Enlarged view at point B in the middle; Figure 12 This is a perspective view of the pull-out component of the present invention.

[0020] In the picture: 1. Distribution cabinet body; 2. Stationary contact body; 3. Positioning assembly; 301. Slide plate; 302. Mounting bracket; 303. Indicator body; 304. Rotating shaft; 305. Reducer; 306. Connecting shaft; 307. Drive gear; 308. Limiting internal gear ring; 309. Threaded tube; 310. Lead screw; 311. Push block; 312. Limiting tube; 313. First gear; 314. Second gear; 315. Gear rack; 316. Lifting frame; 317. Positioning block; 318. Helical spring; 4. Pull-out assembly; 401. Functional drawer body; 402. Slide rod; 403. Connecting rod; 404. Rotating handle; 405. Mounting block; 406. Return spring; 407. Positioning sleeve; 408. Positioning groove; 5. Moving contact body. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-12 The present invention provides a technical solution: a combined low-voltage distribution cabinet, comprising a distribution cabinet body 1 and multiple stationary contact bodies 2. Multiple positioning components 3 are disposed inside the distribution cabinet body 1. Each positioning component 3 includes a sliding plate 301. One end of each sliding plate 301 is fixedly connected to a mounting bracket 302 for positioning. A display body 303 is disposed on the top of each sliding plate 301 near one side edge. A threaded tube 309 is disposed on the outer surface of each display body 303. A movable... The positioning block 317 moves up and down. The power distribution cabinet body 1 is also equipped with multiple pull-out components 4. Each pull-out component 4 includes a functional drawer body 401. The outer surface of each functional drawer body 401 is coupled to a moving contact body 5. Each functional drawer body 401 has a slide rod 402 fixed at the bottom near the two side edges. Each slide rod 402 has a connecting rod 403 slidably connected inside to push the push block 311. Each slide rod 402 also has a positioning groove 408 on its top for limiting the positioning block 317.

[0023] In this embodiment, after the functional drawer body 401 is inserted into the slide plate 301, the functional drawer body 401 can be pushed towards the stationary contact body 2, thereby causing the two slide rods 402 to move forward along the inner wall of the slide plate 301. Simultaneously, during the movement of the slide rods 402, the two connecting rods 403 inside them are driven to move forward. When they move forward to the position where they contact the two push blocks 311, the two connecting rods 403 will push the two push blocks 311 to move towards the inner wall of the mounting bracket 302 respectively. The movement of the push blocks 311 simultaneously drives the two lead screws 310 to rotate, thereby causing the two first gears 313 to rotate, which in turn drives the two second gears 314 to rotate, causing the two gear rows 315 to move downwards respectively, thereby driving the two positioning blocks 317 to move downwards. Wherein, as... Figure 11 As shown, one end of the slide rod 402 is inclined. This is so that when the outer surface of the slide rod 402 contacts the positioning block 317 but does not reach the positioning groove 408, it can push the positioning block 317 to slide along the inclined surface of the slide rod 402. When the positioning block 317 slides, it is pushed upwards by the slide rod 402, thus causing it to... Figure 5 The telescopic rod at the top of the positioning block 317 is shortened. When the two slide rods 402 move forward to the positions corresponding to the positioning slots 408 and the positioning block 317, the positioning block 317 will insert into the positioning slots 408 under the combined action of its own weight and the toothed row 315, thus achieving the positioning of the two slide rods 402, and thereby achieving the positioning of the functional drawer body 401 and the moving contact body 5. At this time, the moving contact body 5 set in the functional drawer body 401 is exactly inserted into the interior of its corresponding stationary contact body 2. Figure 2 As shown, the external cross-sections of both the moving contact body 5 and the stationary contact body 2 are conical, and the outer surfaces are provided with a certain amplitude. The purpose is to further achieve a perfect combination between the moving contact body 5 and the stationary contact body 2.

[0024] like Figures 1-12As shown, a modular low-voltage distribution cabinet includes a cabinet body 1 and multiple stationary contact bodies 2. Multiple positioning components 3 are installed inside the cabinet body 1. Each positioning component 3 includes a sliding plate 301. One end of each sliding plate 301 is fixedly connected to a mounting bracket 302 for positioning. A display body 303 is installed near one edge of the top of each sliding plate 301. A threaded tube 309 is installed on the outer surface of each display body 303. Positioning blocks 317 that can move up and down are installed near the two edges of the outer surface of each sliding plate 301. Multiple pull-out components 4 are also installed inside the cabinet body 1. Each pull-out component 4 includes a functional drawer body 401. Moving contact bodies are coupled to the outer surface of each functional drawer body 401. 5. Multiple functional drawer bodies 401 have slide rods 402 fixedly attached to their bottom edges near both sides. Each slide rod 402 has a connecting rod 403 slidably connected inside to push the push block 311. Each slide rod 402 also has a positioning groove 408 on its top for limiting the positioning block 317. Each positioning assembly 3 also includes a reducer 305. The output end of each reducer 305 is fixedly connected to a rotating shaft 304, and the input end of each reducer 305 is fixedly connected to a connecting shaft 306. Each connecting shaft 306 has a drive gear 307 fixedly fitted onto its outer surface. Each drive gear 307 has a limiting internal gear ring 308 coupled to its outer surface. Each mounting bracket 302 has a lead screw 310 movably embedded in its inner walls on both sides. Limiting tubes 312 are movably embedded in the inner walls of both sides of the mounting bracket 302. A first gear 313 is fixedly mounted on one end of each of the multiple lead screws 310. Second gears 314 are meshed with the outer surfaces of the multiple first gears 313. Gear racks 315 are meshed with the outer surfaces of the multiple second gears 314. Lifting frames 316 are fixedly mounted on the tops of the multiple gear racks 315. Helical springs 318 are provided on the inner walls of both sides of the mounting brackets 302. The outer surfaces of both sides of the multiple sliding plates 301 are fixedly connected to the corresponding inner walls of the distribution cabinet body 1. One end of each of the multiple rotating shafts 304 is fixedly connected to the knob portion in each of the multiple indicator bodies 303. One end of each of the multiple connecting shafts 306 is fixedly connected to one end of each of the multiple threaded tubes 309. The outer surfaces of multiple screws 310 are threadedly connected to the inner walls of multiple functional drawer bodies 401. The outer surfaces of multiple lead screws 310 are threadedly connected to the inner walls of multiple push blocks 311. The outer surfaces of multiple limit tubes 312 slide against the inner walls of multiple push blocks 311. Each pair of adjacent second gears 314 forms a group, and the outer surfaces of each group of second gears 314 are rotatably connected to the inner walls of multiple mounting brackets 302. Each pair of adjacent gear racks 315 forms a group, and the outer surfaces of each group of gear racks 315 are slidably connected to the inner walls of multiple mounting brackets 302. Multiple lifting brackets 316 are fixedly connected to the tops of multiple positioning blocks 317 via multiple telescopic rods. One end of each of multiple coil springs 318 is fixedly connected to the outer surfaces of multiple push blocks 311.In a plurality of connecting rods 403, each pair of adjacent rods forms a group, and the outer surface of each group of connecting rods 403 slides against the inner walls of both sides of a plurality of sliding plates 301.

[0025] In this embodiment, when it is necessary to remove the functional drawer body 401 from the inside of the power distribution cabinet body 1, the positioning sleeve 407 is first moved downwards, pushing the return spring 406 to shorten, wherein, as Figure 12As shown, a damper is installed inside the return spring 406. When the outer surface of the positioning sleeve 407 separates from the outer surface of the rotating handle 404, the rotating handle 404 is rotated downwards. At this time, the limiting effect on the two connecting rods 403 is released, thereby releasing the compression of the two push blocks 311 by the two connecting rods 403. This causes the two helical springs 318 to extend under their own elastic force, pushing the two push blocks 311 into the interior of the slide plate 301. This causes the two lead screws 310 corresponding to them to rotate in the opposite direction, thereby driving the two lifting brackets 316 to move upwards, moving the two positioning blocks 317 out of the interior of the two corresponding positioning slots 408, thus releasing the limiting effect on the slide rod 402, and thus releasing the limiting effect on the functional drawer body 401. The limit is set, and then the functional drawer body 401 can be moved outward from the inside of the distribution cabinet body 1, pushing the threaded tube 309 to rotate, thereby driving the corresponding connecting shaft 306 to rotate, and then driving the drive gear 307 to rotate. The protruding part inside the limiting internal gear ring 308 is made of a rubber material with a certain elasticity. When the drive gear 307 rotates, it squeezes the protruding part, causing it to exit the V-shaped groove between the two protruding parts of the drive gear 307 under its own elastic force. As the drive gear 307 rotates, it limits the other V-shaped groove, thereby preventing the drive gear 307 from rotating automatically. The rotation speed of the connecting shaft 306 is reduced by the reducer 305 and output through the rotating shaft 304. 05 uses the meshing of gears and worm gears to convert the high-speed, low-torque input of the prime mover into a low-speed, high-torque output, while ensuring transmission stability and accuracy. This is a mature technology and will not be discussed in detail here. The rotating shaft 304 drives the knob in the indicator body 303 to rotate, thereby rotating the pointer in the indicator body 303 to a certain angle. The indicator body 303 is a battery-free mechanical timer. Through the linkage logic of spring energy storage, gear reduction, escapement speed control, and trigger ringing, when the rotating shaft 304 drives the knob in the indicator body 303 to rotate, it will cause the pointer in the indicator body 303 to rotate a certain angle to a certain scale position. At this time, the internal spring is tightened, storing elastic potential energy. When 309 rotates in the reverse direction, the pointer returns to the target position. At this time, the internal cam is positioned, and the mainspring gradually releases energy. Through the gear reduction, escape wheel, and balance spring, the gears are controlled to rotate at a constant speed. When the gears rotate to the angle corresponding to the set time, the cam pushes the lever, releasing the internal bell hammer, which strikes the metal spring to produce a bell sound, thus completing the reminder. The model of the indicator body 303 is LSK812BG. When the function drawer body 401 is inserted into the distribution cabinet body 1, it pushes the threaded tube 309 to rotate in the reverse direction, thereby driving the pointer in the indicator body 303 to rotate in the reverse direction. When it rotates to the pointer reset position, the indicator body 303 will emit an sound to indicate to the staff that the function drawer body 401 has been reset.Furthermore, the stationary contact body 2 and the moving contact body 5 are fully engaged, effectively preventing inaccurate positioning of the functional drawer body 401. Through the cooperation between the positioning component 3 and the pull-out component 4, the moving and stationary contacts in the drawer-type low-voltage distribution cabinet are perfectly meshed, preventing misalignment. Moreover, the indicator body 303 ensures that the moving contact body 5 can be fully inserted to the engagement depth, solving the problem in existing drawer-type low-voltage distribution cabinets where misalignment between the moving and stationary contacts easily leads to contact deformation and permanent connection obstacles.

[0026] like Figures 1-12 As shown, a modular low-voltage distribution cabinet includes a cabinet body 1 and multiple stationary contact bodies 2. Multiple positioning components 3 are installed inside the cabinet body 1. Each positioning component 3 includes a sliding plate 301. One end of each sliding plate 301 is fixedly connected to a mounting bracket 302 for positioning. A prompter body 303 is installed near one edge of the top of each sliding plate 301. A threaded tube 309 is installed on the outer surface of each prompter body 303. Positioning blocks 317 that can move up and down are installed near the two edges of the outer surface of each sliding plate 301. Multiple pull-out components 4 are also installed inside the cabinet body 1. Each pull-out component 4 includes a functional drawer body 401. Moving contact bodies 5 are coupled to the outer surface of each functional drawer body 401. Slide rods 402 are fixed to the bottom of each functional drawer body 401 near the two edges. Connecting rods 403 for pushing push blocks 311 are slidably connected inside each slide rod 402. The top of each slide rod 402 also has a positioning... The positioning groove 408 of the block 317 is limited. The multiple pull-out components 4 also include multiple rotating handles 404. The outer surface of the multiple functional drawer bodies 401 is fixedly connected to the mounting block 405. The top of the multiple mounting blocks 405 is provided with a return spring 406. The top of the multiple return springs 406 is provided with a positioning sleeve 407. The multiple lifting frames 316 are fixedly connected to the top of the multiple positioning blocks 317 through multiple telescopic rods. One end of the multiple coil springs 318 is fixedly connected to the outer surface of the multiple push blocks 311. Each pair of adjacent connecting rods 403 forms a group. The outer surface of each group of connecting rods 403 slides against the inner walls of the two sides of the multiple sliding plates 301. Each pair of adjacent connecting rods 403 forms a group. The outer surface of each group of connecting rods 403 is rotatably connected to the outer surface of the multiple rotating handles 404 through hinges. The inner diameter of the multiple positioning grooves 408 matches the outer diameter of the multiple positioning blocks 317. The multiple stationary contact bodies 2 are fixedly connected to the outer surface of the distribution cabinet body 1 through auxiliary rods.

[0027] In this embodiment, the combined low-voltage distribution cabinet serves as the terminal component in a large-scale power grid supply system. Its drawer-type low-voltage distribution cabinet is currently the mainstream combined low-voltage distribution cabinet in the market. In the process of using the drawer-type low-voltage distribution cabinet, in order to prevent insufficient contact reliability between the stationary contact body 2 and the moving contact body 5, when it is necessary to put one of the functional drawer bodies 401 into the interior of the distribution cabinet body 1, the two slide rods 402 set at the bottom of the functional drawer body 401 are first inserted into the two T-shaped slots in the corresponding slide plate 301, thereby limiting the two slide rods 402. At this time, the threaded tube 309 set at the top of the slide plate 301 is inserted into the interior of the functional drawer body 401 and engages with the inner wall of the functional drawer body 401, thus realizing multiple positioning of the functional drawer body 401, and thereby realizing the precise positioning of the moving contact body 5 set on the back of the functional drawer body 401.

[0028] The usage and working principle of this device: As a terminal component in a large-scale power grid supply system, the drawer-type low-voltage distribution cabinet is currently the mainstream type of combined low-voltage distribution cabinet on the market. During the use of the drawer-type low-voltage distribution cabinet, to prevent insufficient contact reliability between the stationary contact body 2 and the moving contact body 5, when one of the functional drawer bodies 401 needs to be placed inside the distribution cabinet body 1, firstly, the two sliding rods 402 located at the bottom of the functional drawer body 401 are inserted into the two T-shaped slots in their corresponding sliding plates 301. At this time, the threaded tube 309 located at the top of the sliding plate 301 is precisely inserted into the interior of the functional drawer body 401 and engages with the inner wall of the functional drawer body 401, completing the multi-functional connection of the functional drawer body 401. Repositioning is performed to achieve precise positioning of the moving contact body 5 located on the back of the functional drawer body 401. Then, the functional drawer body 401 can be pushed towards the stationary contact body 2, causing the two slide rods 402 to move forward along the inner wall of the slide plate 301. Simultaneously, during the movement of the slide rods 402, the two connecting rods 403 located inside them move forward. When they move forward to the position where they contact the two push blocks 311, the two connecting rods 403 push the two push blocks 311 towards the inner wall of the mounting bracket 302. The movement of the push blocks 311 simultaneously drives the two lead screws 310 to rotate, thereby causing the two first gears 313 to rotate, which in turn drives the two second gears 314 to rotate, causing the two gear rows 315 to move downwards, which in turn moves the two positioning blocks 317 downwards. Figure 11As shown, one end of the slide rod 402 is inclined. This is so that when the outer surface of the slide rod 402 contacts the positioning block 317 but does not reach the positioning groove 408, it can push the positioning block 317 to slide along the inclined surface of the slide rod 402. When the positioning block 317 slides, it is pushed upwards by the slide rod 402, thus causing it to... Figure 5 The telescopic rod at the top of the positioning block 317 is shortened. When the two slide rods 402 move forward to the positions corresponding to the positioning slots 408 and the positioning block 317, the positioning block 317 will insert into the positioning slots 408 under the combined action of its own weight and the toothed row 315, thus positioning the two slide rods 402 and positioning the functional drawer body 401 and the moving contact body 5. At this time, the moving contact body 5, which is located in the functional drawer body 401, is inserted into the interior of its corresponding stationary contact body 2. Figure 2 As shown, the external cross-sections of both the moving contact body 5 and the stationary contact body 2 are conical, and their outer surfaces are provided with a certain amplitude. When the functional drawer body 401 needs to be moved out of the distribution cabinet body 1, the positioning sleeve 407 is first moved downwards, pushing the return spring 406 to shorten. When the outer surface of the positioning sleeve 407 separates from the outer surface of the rotating handle 404, the rotating handle 404 is rotated downwards, thus releasing the restriction on the two connecting rods 403, thereby releasing the compression of the two connecting rods 403 on the two push blocks 311. This causes the two helical springs 318 to extend under their own elastic force, pushing the two push blocks 311 to move into the slide plate 301, thereby causing the two corresponding lead screws 310 to rotate in the opposite direction, thereby driving the two lifting frames 316 to move upwards, moving the two positioning blocks 317 out of the interior of their corresponding two positioning slots 408, thus releasing the restriction on the slide rod 402 and the functional drawer body 401. Then the functional drawer body 401 can be moved out of the distribution cabinet body 1. The interior of the distribution cabinet body 1 moves outward, pushing the threaded tube 309 to rotate, which in turn drives the corresponding connecting shaft 306 to rotate, which in turn drives the drive gear 307 to rotate. The rotation speed of the connecting shaft 306 is reduced by the reducer 305 and output through the rotating shaft 304. The rotating shaft 304 drives the knob in the indicator body 303 to rotate, thereby rotating the pointer in the indicator body 303 to a certain angle. When the function drawer body 401 is inserted into the distribution cabinet body 1 again, it pushes the threaded tube 309 to rotate in the opposite direction, thereby driving the pointer in the indicator body 303 to rotate in the opposite direction. When it rotates to the pointer reset position, the indicator body 303 will release an sound to indicate to the staff that the function drawer body 401 has been reset and that the stationary contact body 2 and the moving contact body 5 have been engaged, effectively preventing the function drawer body 401 from being inaccurately positioned. Through the cooperation between the positioning component 3 and the pull-out component 4, the moving contact and the stationary contact in the drawer-type low-voltage distribution cabinet are perfectly engaged.

[0029] The wiring diagrams of the distribution cabinet body 1, stationary contact body 2, and moving contact body 5 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the distribution cabinet body 1, stationary contact body 2, and moving contact body 5 will not be explained in detail.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined low-voltage switchgear cabinet, comprising a switchgear cabinet body (1), a plurality of static contact bodies (2), characterized in that: The inside of the power distribution cabinet body (1) is provided with a plurality of positioning assemblies (3), each of the plurality of positioning assemblies (3) comprises a sliding plate (301), one end of each of the plurality of sliding plates (301) is fixedly connected with a mounting rack (302) for positioning, the top of each of the plurality of sliding plates (301) is provided with a prompter body (303) near one side edge, the outer surface of each of the plurality of prompter bodies (303) is provided with a threaded pipe (309), and the outer surfaces of the plurality of sliding plates (301) are provided with a plurality of positioning blocks (317) that can move up and down near the two side edges. The inside of the power distribution cabinet body (1) is also provided with a plurality of pull-out assemblies (4), each of the plurality of pull-out assemblies (4) comprises a functional drawer body (401), the outer surface of each of the plurality of functional drawer bodies (401) is coupled with a movable contact body (5), the bottom of each of the plurality of functional drawer bodies (401) is fixedly provided with a slide rod (402) near the two side edges, the inside of each of the plurality of slide rods (402) is slidably connected with a connecting rod (403) for pushing the movement of a push block (311), and the top of each of the plurality of slide rods (402) is also provided with a positioning groove (408) for limiting the positioning block (317).

2. The combined low voltage switchgear according to claim 1, characterized in that: Each of the plurality of positioning assemblies (3) further comprises a speed reducer (305), the output end of each of the plurality of speed reducers (305) is fixedly connected with a rotating shaft (304), the input end of each of the plurality of speed reducers (305) is fixedly connected with a connecting shaft (306), the outer surface of each of the plurality of connecting shafts (306) is fixedly provided with a driving gear (307), and the outer surface of each of the plurality of driving gears (307) is coupled with a limiting internal gear ring (308).

3. The combined low voltage switchgear according to claim 2, characterized in that: The two side inner walls of each of the plurality of mounting racks (302) are movably embedded with a lead screw (310), the two side inner walls of each of the plurality of mounting racks (302) are movably embedded with a limiting tube (312), and one end of each of the plurality of lead screws (310) is fixedly provided with a first gear (313).

4. The combined low voltage switchgear according to claim 3, characterized in that: The outer surface of each of the plurality of first gears (313) is meshingly connected with a second gear (314), the outer surface of each of the plurality of second gears (314) is meshingly connected with a gear row (315), the top end of each of the plurality of gear rows (315) is fixedly provided with a lifting frame (316), and the two side inner walls of each of the plurality of mounting racks (302) are provided with a spiral spring (318).

5. The combined low voltage switchgear according to claim 4, characterized in that: Each of the plurality of pull-out assemblies (4) further comprises a plurality of rotating handles (404), the outer surface of each of the plurality of functional drawer bodies (401) is fixedly connected with a mounting block (405), the top of each of the plurality of mounting blocks (405) is provided with a return spring (406), and the top end of each of the plurality of return springs (406) is provided with a positioning sleeve (407).

6. The combined low voltage switchgear cabinet of claim 5, wherein: The outer surfaces of the plurality of sliding plates (301) are fixedly connected with the opposite inner walls of the power distribution cabinet body (1), one end of each of the plurality of rotating shafts (304) is fixedly connected with a knob part in each of the plurality of prompter bodies (303), and one end of each of the plurality of connecting shafts (306) is fixedly connected with one end of each of the plurality of threaded pipes (309).

7. The combined low voltage switchgear according to claim 6, characterized in that: The outer surfaces of the plurality of threaded pipes (309) are respectively in threaded connection with the inner walls of a plurality of functional drawer bodies (401), the outer surfaces of a plurality of lead screws (310) are respectively in threaded connection with the inner walls of a plurality of push blocks (311), and the outer surfaces of a plurality of limiting pipes (312) are respectively in sliding connection with the inner walls of the plurality of push blocks (311).

8. The combined low voltage switchgear according to claim 7, characterized in that: Every two adjacent ones of the plurality of second gears (314) form a group, the outer surfaces of the second gears (314) in each group are respectively in rotary connection with the inner walls of a plurality of mounting racks (302), every two adjacent ones of a plurality of toothed rows (315) form a group, and the outer surfaces of the toothed rows (315) in each group are respectively in sliding connection with the inner walls of the plurality of mounting racks (302).

9. The combined low voltage switchgear according to claim 8, characterized in that: The plurality of lifting frames (316) are respectively fixedly connected with the top portions of a plurality of positioning blocks (317) through a plurality of telescopic rods, one end of each of a plurality of helical springs (318) is fixedly connected with the outer surface of each of the plurality of push blocks (311), every two adjacent ones of a plurality of connecting rods (403) form a group, and the outer surfaces of the connecting rods (403) in each group are respectively in sliding connection with the inner walls on both sides of a plurality of sliding plates (301).

10. The modular low voltage switchgear of claim 9, wherein: Every two adjacent ones of the plurality of connecting rods (403) form a group, the outer surfaces of the connecting rods (403) in each group are respectively in rotary connection with the outer surfaces of a plurality of rotary handles (404) through hinges, the inner diameters of a plurality of positioning grooves (408) are respectively matched with the outer diameters of the plurality of positioning blocks (317), and the plurality of static contactor bodies (2) are all fixedly connected with the outer surfaces of a power distribution cabinet body (1) through auxiliary rods.

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