Independently-pluggable low-voltage draw-out type power distribution cabinet

Abstract

The invention discloses an independent plugging low-voltage draw-out type power distribution cabinet, and relates to the technical field of power distribution cabinets, the power distribution cabinet comprises a cabinet body and a butt joint assembly, the cabinet body is internally provided with a separator plate, the separator plate is internally provided with a joint, the cabinet body is internally provided with a drawer, the butt joint assembly is arranged at the rear part of the drawer, and the butt joint assembly comprises a support plate, supporting plates are symmetrically arranged at the rear end of the drawer, a cross rod is slidably connected into the supporting plates, the outer side of the cross rod is sleeved with a first spring, one end of the first spring is connected with a floating plate, and the floating plate is fixedly connected with the cross rod. According to the invention, the positioning pin and the guide sleeve are in conical guide fit, and the elastic adjustment of the spring assembly is combined, so that the automatic calibration function when the drawer is inserted is realized, the position offset in the horizontal and vertical directions is effectively corrected, the accurate butt joint of an electric appliance joint and a wire holder is ensured, poor contact or damage is prevented, and the reset spring group can quickly return to the original position after the drawer is drawn out.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution cabinets, and specifically to a low-voltage draw-out distribution cabinet with independent plugging and unplugging. Background Art

[0002] Low-voltage draw-out switch cabinets are applicable to three-phase AC 50 / 60HZ, rated voltage 660V, and three-phase four-wire and three-phase five-wire power systems with rated current below 6300A, and are used for receiving and distributing electric energy, and are widely used in power distribution centers PC and motor control centers MCC of power plants, substations, factories and mines, and high-rise buildings.

[0003] When the existing low-voltage draw-out switch cabinet is in use, the drawer needs to be inserted into the cabinet body for docking. However, in the actual use process, due to processing and assembly errors, the processing accuracy of the drawer and the cabinet body is insufficient. For example, if the tolerance of the slideway size is too large, or if it is not strictly centered during the installation process, it may cause an initial positioning deviation. Subsequently, due to frequent plugging and unplugging or environmental factors, components such as guide rails and slideways may be worn or slightly deformed, further reducing the positioning accuracy. Therefore, during the plugging process, the connection terminals on the drawer and the connection terminals inside the cabinet may be misaligned, resulting in poor contact or damage. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-voltage draw-out distribution cabinet with independent plugging and unplugging to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A low-voltage draw-out distribution cabinet with independent plugging and unplugging, including a cabinet body and a docking component. A partition is arranged inside the cabinet body, and a connector is arranged inside the partition. A drawer is arranged inside the cabinet body. The docking component is arranged at the rear of the drawer. The docking component includes a support plate. Support plates are symmetrically arranged at the rear end of the drawer, and a cross bar is slidably connected inside the support plate. A first spring is sleeved outside the cross bar. One end of the first spring is connected to a floating plate, and the floating plate is fixedly connected to the cross bar. A vertical bar is slidably connected inside one end of the cross bar. Second springs are sleeved outside the upper and lower ends of the vertical bar, and the ends of the second springs are connected to a mounting plate. A wiring seat is arranged in the middle of the mounting plate. Positioning pins are slidably connected inside both ends of the mounting plate. A third spring is sleeved outside the middle of the positioning pin. Guide sleeves are fixedly arranged inside both ends of the connector, and guide grooves are formed inside the guide sleeves.

[0006] Furthermore, an annular boss is arranged in the middle of the positioning pin, and the positioning pins correspond to the guide grooves one by one, and the ends of the guide grooves are tapered.

[0007] Furthermore, the mounting plate is fixedly connected to the vertical bar, and the length of the mounting plate is less than the length of the drawer.

[0008] Furthermore, one end of the positioning pin is connected with a protection component, and the protection component includes a rack frame. One end of the positioning pin is fixed with the rack frame, and a gear is engaged with the side of the rack frame. Moreover, a coupling shaft is arranged inside the gear, and the coupling shaft is rotatably connected with the mounting plate.

[0009] Furthermore, a rotating plate is fixed on the outer side of one end of the coupling shaft, and a through groove is formed inside one end of the rotating plate. A sliding column is slidably connected inside the through groove, and a protective cover is fixed at one end of the sliding column.

[0010] Furthermore, sliding blocks are symmetrically arranged on one side of the protective cover, and the sliding blocks are trapezoidal. Sliding grooves are symmetrically formed on one side of the mounting plate, and the sliding blocks are slidably connected with the mounting plate through the sliding grooves.

[0011] Furthermore, a cleaning component is arranged inside both ends of the mounting plate. The cleaning component includes a central plate. The central plate is arranged inside both ends of the mounting plate, air bags are fixed on both sides of the central plate, and a first one-way valve is arranged on one side of the air bags.

[0012] Furthermore, the number of the air bags is two. One end of one air bag is fixedly connected with the end of the positioning pin, and one end of the other air bag is fixedly connected with the central boss part of the positioning pin.

[0013] Furthermore, a second one-way valve is arranged at the other end of the air bag, and a filter is connected to the end of the second one-way valve, and the filter is fixedly connected with the mounting plate.

[0014] Furthermore, a shunt pipe is connected to one end of the filter, a dust suction pipe is connected to the end of the shunt pipe, the dust suction pipe is fixedly connected with the protective cover, and a brush hair is arranged on one side of the dust suction pipe.

[0015] The present invention provides a low-voltage draw-out switchgear with independent plugging and unplugging, and has the following beneficial effects: 1. Through the conical guiding cooperation between the positioning pin and the guiding sleeve and the elastic adjustment of the spring assembly, the present invention realizes the automatic calibration function when the drawer is inserted, effectively corrects the position deviation in the horizontal and vertical directions, ensures the precise docking of the electrical connector and the terminal block, prevents poor contact or damage, and the reset spring group can quickly return to its original position after the drawer is drawn out. This mechanism can adapt to the installation requirements of drawers with different floor heights, significantly improves the docking reliability and maintenance convenience of the equipment, prolongs the service life of electrical components, and reduces the failure rate caused by misalignment.

[0016] 2. The present invention also links the protection component during the independent plugging and unplugging process. When the drawer is pulled out, the protection cover is driven to close through the rack and pinion transmission, fully covering the exposed terminal socket, effectively preventing accidental bumps and foreign matter intrusion during maintenance. During the insertion process, the protection cover automatically opens to expose the docking port. This mechanism realizes the intelligent linkage between protection and docking, completely eliminating the step of manual operation of the protection device, significantly improving equipment safety and operating efficiency, and is particularly suitable for industrial environments with frequent plugging and unplugging.

[0017] 3. The present invention integrates a self-cleaning system. When the protective cover moves, the bristles automatically clean the electrical contacts. The negative pressure adsorption design of the two-way airbag and the filter can remove the swept dust particles in real time. The flexible shunt pipe ensures that the movement is not interfered with. The double airbag group realizes plug-in and unplug two-way dust suction. The cleaning system simultaneously completes surface maintenance when the contact parts are separated, effectively preventing the accumulation of conductive dust, maintaining stable conductive performance, and reducing the risk of abnormal contact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of a drawer of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention; Figure 3 It is a schematic diagram of the front view of the three-dimensional structure of the mounting plate of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention; Figure 4 It is a rear perspective structural diagram of a mounting plate of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention; Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of a guide sleeve of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of a protection component of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of a cleaning component part of an independently pluggable low-voltage withdrawable power distribution cabinet of the present invention.

[0019] In the figure: 1, cabinet body; 2, partition board; 3, joint; 4, drawer; 5, docking component; 501, support plate; 502, cross bar; 503, first spring; 504, floating plate; 505, vertical bar; 506, second spring; 507, mounting plate; 508, terminal block; 509, positioning pin; 510, third spring; 511, guide sleeve; 512, guide groove; 6, protection component; 601, rack frame; 602, gear; 603, coupling shaft; 604, rotating plate; 605, through groove; 606, sliding column; 607, protective cover; 608, slider; 609, sliding groove; 7, cleaning component; 701, central plate; 702, air bag; 703, first one-way valve; 704, second one-way valve; 705, filter; 706, shunt pipe; 707, dust suction pipe; 708, brush bristles. Detailed implementation manner

[0020] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a low-voltage draw-out power distribution cabinet with independent plugging and unplugging, including a cabinet body 1 and a docking component 5. A partition board 2 is arranged inside the cabinet body 1, and a joint 3 is arranged inside the partition board 2. A drawer 4 is arranged inside the cabinet body 1. The docking component 5 is arranged at the rear of the drawer 4. The docking component 5 includes a support plate 501. Support plates 501 are symmetrically arranged at the rear end of the drawer 4. A cross bar 502 is slidably connected inside the support plate 501. A first spring 503 is sleeved outside the cross bar 502. One end of the first spring 503 is connected to a floating plate 504, and the floating plate 504 is fixedly connected to the cross bar 502. A vertical bar 505 is slidably connected inside one end of the cross bar 502. Second springs 506 are sleeved outside the upper and lower ends of the vertical bar 505. The ends of the second springs 506 are connected to a mounting plate 507. The mounting plate 507 is fixedly connected to the vertical bar 505. The length of the mounting plate 507 is less than the length of the drawer 4. A terminal block 508 is arranged in the middle of the mounting plate 507. Positioning pins 509 are slidably connected inside both ends of the mounting plate 507. A third spring 510 is sleeved outside the middle of the positioning pin 509. Guide sleeves 511 are fixedly arranged inside both ends of the joint 3. Guide grooves 512 are opened inside the guide sleeves 511. An annular boss is arranged in the middle of the positioning pin 509. The positioning pins 509 and the guide grooves 512 correspond one by one. The end of the guide groove 512 is conical; The specific operation is as follows. During the process of inserting the drawer 4 into the interior of the cabinet 1, since the positioning pin 509 is relatively long, it will first come into contact with the guide sleeve 511. At the same time, because the guiding groove 512 on the guide sleeve 511 has a relatively large opening and is conical, which has a guiding effect, and the elastic force of the third spring 510 is greater than the elastic forces of the first spring 503 and the second spring 506. Therefore, when the positioning pin 509 slides along the side wall of the guiding groove 512, it can drive the mounting plate 507 to move. And when there is a horizontal position deviation, the floating plate 504 will drive the cross bar 502 to slide within the support plate 501. When there is a vertical position deviation, the vertical bar 505 will slide within the floating plate 504, thereby automatically calibrating the horizontal and vertical positions of the mounting plate 507, ensuring alignment between the joint 3 and the terminal block 508, preventing the contacts between the joint 3 and the terminal block 508 from skewing, and avoiding the situation of poor contact or damage caused by misalignment. After being pulled out, the first spring 503 and the second spring 506 can quickly reset the mounting plate 507. Therefore, when the drawer 4 is inserted into different compartments inside the cabinet 1, normal docking operations can be carried out, which is beneficial to ensuring the normal use of the equipment.

[0021] Please refer to Figure 4 and Figure 6 , one end of the positioning pin 509 is connected with a protection component 6, and the protection component 6 includes a rack frame 601. One end of the positioning pin 509 is fixed with a rack frame 601, and a gear 602 is meshed with the side of the rack frame 601. Moreover, a coupling shaft 603 is arranged inside the gear 602, and the coupling shaft 603 is rotationally connected with the mounting plate 507. A rotating plate 604 is fixed to the outer side of one end of the coupling shaft 603, and a through groove 605 is opened inside one end of the rotating plate 604. A sliding column 606 is slidably connected inside the through groove 605, and a protective cover 607 is fixed to one end of the sliding column 606. Sliders 608 are symmetrically arranged on one side of the protective cover 607, and the sliders 608 are trapezoidal. Sliding grooves 609 are symmetrically opened on one side of the mounting plate 507, and the sliders 608 are slidably connected with the mounting plate 507 through the sliding grooves 609; The specific operation is as follows. When the drawer 4 is pulled out, the third spring 510 will push the convex part of the positioning pin 509 to reset it. During this process, the rack frame 601 will also be driven to move synchronously. The gear 602 drives the coupling shaft 603 to rotate, causing the rotating plates 604 on the upper and lower sides to rotate and approach the center. During this process, the slider 608 and the chute 609 will limit the moving direction of the protective cover 607, making it move only vertically. Therefore, the rotating plate 604 will drive the sliding column 606 to slide through the through slot 605, so that the protective covers 607 on the upper and lower sides are closed. Therefore, when the connector 3 is separated from the terminal block 508, the protective cover 607 can automatically cover and protect the terminal block 508, preventing accidental bumps on the outside of the terminal block 508 or foreign objects from entering during the maintenance of the electrical components inside when the drawer 4 is pulled out, which may cause poor contact of the terminal block 508 during subsequent connections. When plugging in, after the positioning pin 509 is inserted into the guide sleeve 511, there is still a certain distance between the connector 3 and the terminal block 508. At this time, applying a thrust to the drawer 4 can cause the third spring 510 to contract. Since the position of the positioning pin 509 remains unchanged, when the mounting plate 507 moves, the gear 602 can roll on the rack frame 601, causing the rotating plates 604 on the upper and lower sides to rotate outward. Similarly, the mounting plate 507 can be opened. Then, as the mounting plate 507 moves, the connection between the connector 3 and the terminal block 508 can be made. Therefore, the terminal block 508 can be automatically exposed during the insertion process, and after being pulled out, the terminal block 508 can also be automatically covered and protected without additional operations, with better operation convenience.

[0022] Please refer to Figure 4 、 Figure 6 and Figure 7 As shown in, cleaning components 7 are arranged inside both ends of the mounting plate 507. The cleaning components 7 include a central plate 701. The central plate 701 is arranged inside both ends of the mounting plate 507. Air bags 702 are fixed on both sides of the central plate 701. A first one-way valve 703 is arranged on one side of the air bag 702. The number of air bags 702 is two. The end of one air bag 702 is fixedly connected to the end of the positioning pin 509, and the end of the other air bag 702 is fixedly connected to the central boss part of the positioning pin 509. A second one-way valve 704 is arranged at the other end of the air bag 702. The end of the second one-way valve 704 is connected to a filter 705, and the filter 705 is fixedly connected to the mounting plate 507. One end of the filter 705 is connected to a shunt pipe 706, and the end of the shunt pipe 706 is connected to a dust suction pipe 707. The dust suction pipe 707 is fixedly connected to the protective cover 607, and a brush 708 is arranged on one side of the dust suction pipe 707; The specific operation is as follows. During the vertical movement of the protective cover 607, the brush bristles 708 will contact the connector 3. Therefore, when the protective cover 607 is opened or closed, it can automatically brush and clean the contacts on the connector 3, avoiding the situation of poor contact caused by dust adhesion on the contacts. And during the sliding process of the positioning pin 509 inside the mounting plate 507, it will also drive the expansion and contraction of the air bags 702 on both sides of the central plate 701. When one of the air bags 702 contracts, the air inside it will be discharged through the first one-way valve 703, and the other air bag 702 will elongate. Therefore, it will suck the inside of the filter 705 through the second one-way valve 704. And the filter 705 is connected to the inside of the shunt pipe 706 and the dust suction pipe 707. Therefore, during the brushing and cleaning process, it will automatically adsorb the dust swept around through the holes on the dust suction pipe 707, further improving the cleaning effect. At the same time, the end of the shunt pipe 706 is made of a flexible hose material and will not interfere with the movement of the protective cover 607. And there are two pairs of air bags 702. Therefore, during the plugging and unplugging process, one of the air bags 702 can perform the air suction operation to ensure the normal operation of the cleaning component 7.

[0023] In summary, for this independent pluggable low-voltage draw-out switchgear cabinet, during use, first, when the drawer 4 is inserted into the cabinet 1, the positioning pin 509 will first contact the guide sleeve 511. At the same time, due to the guiding function of the guiding groove 512 on the guide sleeve 511 and the elastic force of the third spring 510 being greater than the elastic forces of the first spring 503 and the second spring 506, when the positioning pin 509 slides along the side wall of the guiding groove 512, it can drive the mounting plate 507 to move. And when there is a horizontal position deviation, the floating plate 504 will drive the cross bar 502 to slide inside the support plate 501. When there is a vertical position deviation, the vertical bar 505 will slide inside the floating plate 504, thereby automatically calibrating the horizontal and vertical positions of the mounting plate 507 to ensure alignment between the connector 3 and the terminal block 508, preventing the contacts between the connector 3 and the terminal block 508 from being skewed and avoiding the situation of poor contact or damage caused by misalignment. Next, after the positioning pin 509 is inserted into the guide sleeve 511, there will still be a certain distance between the connector 3 and the terminal block 508. At this time, applying a thrust to the drawer 4 can cause the third spring 510 to contract. Since the position of the positioning pin 509 remains unchanged, when the mounting plate 507 moves, the gear 602 can roll on the rack 601, so that the rotating plates 604 on the upper and lower sides rotate outward. During this process, the slider 608 and the chute 609 will limit the movement direction of the protective cover 607, making it only move vertically. Therefore, the rotating plate 604 will drive the sliding column 606 to slide through the through groove 605, making the mounting plate 507 open. At the same time, the brush bristles 708 will contact the connector 3. Therefore, when the protective cover 607 moves, it can automatically brush and clean the contacts on the connector 3. Then, as the positioning pin 509 slides inside the mounting plate 507, it will also drive the air bags 702 on both sides of the center plate 701 to expand and contract. When one of the air bags 702 contracts, the air inside it will be discharged through the first one-way valve 703, and the other air bag 702 will expand, so that the inside of the filter 705 will be sucked through the second one-way valve 704. The filter 705 is connected to the inside of the dust suction pipe 707 through the shunt pipe 706. Therefore, during the brushing and cleaning process, the dust swept around will be automatically absorbed through the holes on the dust suction pipe 707, further improving the cleaning effect. Afterwards, as the mounting plate 507 moves, the connector 3 and the wiring seat 508 can be docked. Finally, when the drawer 4 is pulled out, the third spring 510 will push the convex part of the positioning pin 509 to reset it. In this process, it will also drive the rack 601 to move synchronously, and the gear 602 will drive the connecting shaft 603 to rotate, so that the rotating plates 604 on the upper and lower sides rotate toward the center. Therefore, the rotating plates 604 will drive the sliding column 606 to slide through the through groove 605, so that the protective covers 607 on the upper and lower sides are closed. Therefore, when the connector 3 is separated from the terminal block 508, the protective cover 607 can automatically cover and protect the terminal block 508. In this process, the cleaning component 7 will work again to solve the problem that the connector 3 is located deep inside the cabinet 1 and is inconvenient to clean. After being pulled out, the first spring 503 and the second spring 506 will reset the mounting plate 507.

[0024] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0025] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. An independently pluggable and withdrawable low-voltage switchgear panel, characterized in that It includes a cabinet body (1) and a docking component (5). Inside the cabinet body (1), there is a partition board (2), and a connector (3) is arranged inside the partition board (2). Inside the cabinet body (1), there is a drawer (4). The docking component (5) is arranged at the rear of the drawer (4). The docking component (5) includes a support plate (501). At the rear end of the drawer (4), support plates (501) are symmetrically arranged. Inside the support plate (501), a cross bar (502) is slidably connected. A first spring (503) is sleeved outside the cross bar (502). One end of the first spring (503) is connected to a floating plate (504), and the floating plate (504) is fixedly connected to the cross bar (502). Inside one end of the cross bar (502), a vertical bar (505) is slidably connected. Second springs (506) are sleeved outside the upper and lower ends of the vertical bar (505). The ends of the second springs (506) are connected to a mounting plate (507). In the middle of the mounting plate (507), a wiring seat (508) is arranged. Inside the two ends of the mounting plate (507), positioning pins (509) are slidably connected. A third spring (510) is sleeved outside the middle of the positioning pin (509). Inside the two ends of the connector (3), guide sleeves (511) are fixed, and guide grooves (512) are formed inside the guide sleeves (511).

2. The low-voltage draw-out power distribution cabinet with independent plugging and unplugging according to claim 1, characterized in that A circular boss is arranged in the middle of the positioning pin (509). The positioning pins (509) and the guide grooves (512) are in one-to-one correspondence, and the ends of the guide grooves (512) are conical.

3. An independent pluggable low-voltage draw-out switchgear according to claim 1, characterized in that, The mounting plate (507) is fixedly connected to the vertical bar (505), and the length of the mounting plate (507) is less than the length of the drawer (4).

4. An independently pluggable low-voltage draw-out power distribution cabinet according to claim 1, characterized in that, One end of the positioning pin (509) is connected to a protection component (6). The protection component (6) includes a rack frame (601). One end of the positioning pin (509) is fixed with a rack frame (601). A gear (602) is meshed with the side of the rack frame (601). A connecting shaft (603) is arranged inside the gear (602), and the connecting shaft (603) is rotatably connected to the mounting plate (507).

5. An independently pluggable low-voltage draw-out power distribution cabinet according to claim 4, characterized in that, A rotating plate (604) is fixedly connected to the outside of one end of the connecting shaft (603). A through groove (605) is formed inside one end of the rotating plate (604). A sliding column (606) is slidably connected inside the through groove (605). One end of the sliding column (606) is fixed with a protective cover (607).

6. The low-voltage draw-out switchgear cabinet with independent plugging and unplugging according to claim 5, characterized in that Sliders (608) are symmetrically arranged on one side of the protective cover (607). The sliders (608) are trapezoidal. Sliding grooves (609) are symmetrically formed on one side of the mounting plate (507), and the sliders (608) are slidably connected to the mounting plate (507) through the sliding grooves (609).

7. An independently pluggable low-voltage draw-out switchgear according to claim 6, characterized in that, A cleaning component (7) is arranged inside the two ends of the mounting plate (507). The cleaning component (7) includes a central plate (701). Central plates (701) are arranged inside the two ends of the mounting plate (507). Air bags (702) are fixed on both sides of the central plate (701), and a first one-way valve (703) is arranged on one side of the air bag (702).

8. An independently pluggable low-voltage draw-out power distribution cabinet according to claim 7, characterized in that, The number of the air bags (702) is set to two, and the end of one air bag (702) is fixedly connected to the end of the positioning pin (509), and the end of the other air bag (702) is fixedly connected to the central boss portion of the positioning pin (509).

9. An independently pluggable low-voltage draw-out switchgear according to claim 8, characterized in that, A second one-way valve (704) is arranged at the other end of the air bag (702), and a filter (705) is connected to the end of the second one-way valve (704), and the filter (705) is fixedly connected to the mounting plate (507).

10. A low-voltage draw-out switchgear cabinet with independent plugging and unplugging according to claim 9, characterized in that, A shunt pipe (706) is connected to one end of the filter (705), and a dust suction pipe (707) is connected to the end of the shunt pipe (706), and the dust suction pipe (707) is fixedly connected to the protective cover (607), and a brush (708) is arranged on one side of the dust suction pipe (707).

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