Low-voltage switchgear convenient for rapid assembly and maintenance

Abstract

The invention relates to the technical field of low-voltage switch cabinets, in particular to a low-voltage switch device convenient to quickly assemble and overhaul, which comprises a cabinet body, a plurality of openings are formed in one side of the cabinet body, corresponding drawing units are respectively mounted in the openings, and an operation bin is arranged on one side, far away from the openings, of the cabinet body. A plurality of driving devices connected with the drawing units are arranged in the operation bin, each driving device comprises a first motor, a threaded groove is formed in the side, close to the corresponding driving device, of the bottom of each drawing unit, and a first threaded rod matched with the corresponding threaded groove is arranged at the power output end of each first motor; lifting grooves are formed in the positions, located on the two sides of the opening, of the cabinet body respectively, second threaded rods are arranged in the lifting grooves, second motors capable of driving the second threaded rods are arranged at the top of the cabinet body, lifting bases are installed on the second threaded rods through threads, and bearing frames are installed at the ends, extending out of the opening, of the lifting bases through rotating shafts.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage switchgear cabinets, and particularly to a low-voltage switch device that is convenient for quick assembly and maintenance. Background Art

[0002] The low-voltage draw-out unit type switchgear cabinet is made of steel plates to form a closed outer shell. Electrical components of the incoming and outgoing line circuits are all installed in the draw-out units that can be withdrawn, constituting a functional unit capable of completing a certain type of power supply task. Between the functional unit and the busbar or cable, it is separated by a grounded metal plate or a functional board made of plastic, forming three areas: the busbar, the functional unit, and the cable. There are also isolation measures between each functional unit. The draw-out unit type switchgear cabinet has high reliability, safety, and interchangeability, and is a relatively advanced switchgear cabinet. Most of the currently produced switchgear cabinets are draw-out unit type switchgear cabinets. They are applicable to industrial and mining enterprises and high-rise buildings with relatively high requirements for power supply reliability, as a centralized control power distribution center.

[0003] The design height of the existing low-voltage draw-out unit type switchgear cabinet sometimes reaches 2.2 m. When it is necessary to inspect or install equipment on the draw-out unit at a high position, a ladder needs to be used. Carrying a ladder will increase the burden on the staff, which is not conducive to the long-term inspection operation of the staff. Moreover, after installing equipment inside some draw-out units at a high position, its weight will increase, and the operator needs to lift it up and reinstall it inside the cabinet body. This not only increases the labor intensity of the operator, but also may cause the hand to slip and the draw-out unit to hit the operator's head, increasing the construction risk of the operator. When it is necessary to inspect or install equipment on the draw-out unit at a lower position, the operator needs to squat down for operation, which is not only inconvenient to operate but also increases the labor intensity of the operator. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a low-voltage switch device that is convenient for quick assembly and maintenance, so as to solve the problems existing in the above background art.

[0005] To achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

[0006] A low-voltage switchgear facilitating quick assembly and maintenance, comprising a cabinet body. A plurality of openings are provided on one side of the cabinet body, and corresponding draw units are respectively installed inside the plurality of openings. The side of the cabinet body away from the openings has an operation chamber. A plurality of driving devices respectively connected to the draw units are arranged inside the operation chamber. The driving device includes a first motor. A threaded groove is provided on the bottom of the draw unit near the driving device. A first threaded rod adapted to the threaded groove is arranged at the power output end of the first motor. A plurality of sliding frames respectively in contact with the bottom of the draw unit are arranged inside the cabinet body. Sliding wheels are arranged inside the sliding frames. The bottom of the draw unit abuts against the sliding wheels. Lifting grooves are respectively arranged on both sides of the cabinet body where the openings are located. A second threaded rod is arranged inside the lifting grooves. A second motor capable of driving the second threaded rod is arranged on the top of the cabinet body. A lifting seat is installed on the second threaded rod through threads. One end of the lifting seat extending out of the opening is installed with a supporting device through a rotating shaft. A driving and conveying device is arranged at the upper end of the supporting device. A limiting groove is provided on one side of the middle part of the lifting groove near the supporting bracket. A locking mechanism adapted to the limiting groove is arranged on the lifting seat. The supporting device can control the switch of the locking mechanism.

[0007] Preferably, the locking mechanism includes a telescopic groove arranged at one end of the lifting seat close to the supporting device. A locking groove is formed on the lifting seat. The telescopic groove communicates with the locking groove. A telescopic rod is installed inside the telescopic groove. A locking block adapted to the limiting groove is installed inside the locking groove through a spring. One end of the telescopic rod can be connected to the locking block.

[0008] Preferably, the supporting device includes a supporting bracket. One end of the supporting bracket can be rotatably connected to the lifting seat. The supporting bracket can rotate to a state parallel or perpendicular to the cabinet body. Conveyor belts are arranged on both opposite sides of the two supporting brackets. The two ends of the conveyor belts are respectively installed on the supporting brackets through a driving roller and a driven roller. A third motor capable of driving the driving roller is arranged on the side of the supporting bracket away from the conveyor belt.

[0009] Preferably, a sliding groove is formed on the bottom side of the supporting bracket. A shielding plate is installed inside the sliding groove. The length of the supporting bracket is half of the height of the cabinet body. The shielding plate has the same length as the supporting bracket.

[0010] Preferably, a limiting plate is arranged at one end of the supporting bracket away from the lifting seat. The limiting plate can abut against one end of the shielding plate. Magnetic attraction plates are installed at the ends of the shielding plate and the limiting plate where they abut against each other.

[0011] Preferably, a limiting lock is arranged at one end of the supporting bracket close to the lifting seat. A lock hole adapted to the limiting lock is arranged on the side surface of one end of the shielding plate close to the limiting plate.

[0012] Preferably, the distance between the two conveyor belts is less than the width of the drawer unit, and the distance between the two baffle plates is the same as the distance between the two conveyor belts.

[0013] Preferably, a docking head is provided at one end of the drawer unit located inside the cabinet body, a docking hole for docking with the docking head is provided inside the cabinet body, a handle groove is provided at one end of the drawer unit away from the docking head, and the length of the drawer unit is less than the length of the support bracket.

[0014] Preferably, the supporting device includes a support bracket, a sliding groove is formed at the bottom of the support bracket, a baffle plate is installed in the sliding groove, one end of the baffle plate can be rotatably connected to the lifting seat, conveyor belts are arranged on both opposite sides of the two support brackets, and both ends of the conveyor belts are respectively installed on the baffle plate through a driving roller and a driven roller. A third motor capable of driving the driving roller is arranged on the baffle plate. One end of the conveyor belt can be connected to one end of the support bracket close to the lifting seat through a screw. A pin is arranged at one end of the support bracket away from the lifting seat. A pin hole for cooperating with the pin is provided at the bottom of the drawer unit close to the opening. A supporting roller is installed at one end of the baffle plate close to the lifting seat.

[0015] The beneficial effects of the embodiments of the present invention are as follows:

[0016] 1. The device rotates the support bracket to a right - angle state with the cabinet body, then drives the second threaded rod to rotate through the operation of the second motor, drives the lifting seat to move downward, ensures that the support bracket on the lifting seat is located below the drawing unit, then starts the first motor, and through the cooperation of the first threaded rod and the threaded groove on the drawing unit, drives the drawing unit to extend from the opening of the cabinet body. Then the second motor drives the second threaded rod to rotate, drives the lifting seat to move upward until the conveyor belt on the support bracket driven by the lifting seat abuts against the bottom of the drawing unit. Then, under the operation of the first motor, it continues to drive the drawing unit to extend out of the cabinet body. Since the length of the first threaded rod is at most one - third of the length of the drawing unit (for the stability when driving the first threaded rod to work), therefore, under the operation of the third motor, it can continue to drive the drawing unit in contact with the conveyor belt to move onto the support bracket through the driving roller and the driven roller. Since there is a sliding rack inside the cabinet body that can contact the bottom of the drawing unit, and the sliding wheels on the sliding rack can abut against the bottom of the drawing unit, when the conveyor belt drives the drawing unit to move, it can reduce the friction between the drawing unit and the cabinet body and the sliding rack, facilitating the effective and rapid movement of the drawing unit to the conveyor belt between the two support brackets. The third motor stops working, the second motor starts, and drives the lifting seat to drive the support bracket to descend through the second threaded rod until it descends to a height convenient for the operator to operate. The second motor stops working, which is convenient for the operator to stand on the ground to check the inside of the drawing unit or install equipment; after the operator checks or the equipment installation is completed, the second motor drives the support bracket on the lifting seat to move upward through the second threaded rod. When the drawing unit rises to the opening at the high position of the cabinet body, the third motor drives the conveyor belt to send the drawing unit into the opening of the cabinet body until the threaded groove on the drawing unit abuts against the first threaded rod. Under the drive of the first motor, through the mutual cooperation of the first threaded rod and the conveyor belt, the drawing unit can be reinstalled inside the cabinet body; similarly, it is also convenient for the operator to operate the drawing unit at the bottom of the cabinet body. Through the above structure, it can not only reduce the labor intensity of the operator but also avoid the drawing unit falling due to the operator's slippery hand and hitting the operator, ensuring the safety of the operator's work.

[0017] 2. Since the support bracket is rotatably connected to the lifting seat in this device, it is convenient to drive the lifting seat to move to the middle of the cabinet body through the second threaded rod under the drive of the second motor. Then it is convenient for the operator to manually turn the support bracket upward to a state parallel to the cabinet body. Since the baffle is installed on the support bracket through the sliding groove, when the support bracket rotates to be parallel to the cabinet body, it is convenient for the operator to pull the baffle on the support bracket downward, which can not only avoid the extended support bracket occupying too much space but also limit the support bracket to prevent it from folding downward again.

[0018] 3. The limit plate of this device can prevent the shielding plate from sliding out of the sliding groove, and the magnetic attraction plates on the shielding plate and the limit plate can prevent the shielding plate from sliding out of the sliding groove and poking the operator when the folding support bracket is turned over, improving the safety and stability of this device.

[0019] 4. This device is not only convenient for the pulling unit to extend out of the cabinet body, and both sides of the bottom of the cabinet body can respectively abut against two conveyor belts, facilitating the complete removal of the pulling unit from the interior of the cabinet body. It can also ensure that the conveyor belt and the shielding plate can completely limit the opening of the cabinet body when the support bracket is folded to be parallel to the side of the cabinet body, preventing the pulling unit from being randomly pulled out of the cabinet by others. It can also cooperate with the limit lock on the support bracket and the lock hole on the shielding plate to lock all the pulling units on the cabinet body, avoiding the need to open and close each pulling unit individually, reducing the labor intensity, and preventing the situation where some pulling units are forgotten to be closed when there are many pulling units.

[0020] 5. Since one end of the telescopic groove is close to the support bracket, when the support bracket is at a right angle to the side of the cabinet body, the support bracket can push the telescopic rod inside the telescopic groove towards the locking groove, ensuring that the locking block in the locking groove is separated from the limit groove and ensuring that the lifting seat can freely lift and lower along with the second threaded rod. When it is necessary to lock the pulling unit, the lifting seat is driven by the second threaded rod to move to the middle of the cabinet body. When the support bracket is folded to be parallel to the side of the cabinet body, under the action of the spring, the locking block can be embedded in the limit groove to limit the position of the lifting seat, and the end of the telescopic rod extends out of the telescopic groove, preventing the misoperation of the second motor, resulting in the inability to effectively lock the pulling unit or damage to the shielding plate.

[0021] 6. Through the cooperation of the supporting roller and the support bracket, this device can not only completely extract the pulling unit from the cabinet body but also ensure the stability of the pulling unit. Through the cooperation of the pin and the pin hole, it can ensure that the conveyor belt can effectively extract the pulling unit from the interior of the cabinet body, preventing the situation where the pulling unit cannot be effectively extracted due to the small friction between the surface of the conveyor belt and the bottom of the pulling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the structural schematic diagram inside the cabinet body of the present invention Figure 1 ;

[0024] Figure 3 is the structural schematic diagram inside the cabinet body of the present invention Figure 2 ;

[0025] Figure 4 is the cross-sectional view of the present invention;

[0026] Figure 5 Schematic diagram of the supporting device in the first embodiment of the present invention;

[0027] Figure 6 is Figure 3 local enlarged structure diagram of;

[0028] Figure 7 Cross-sectional view of the lifting seat;

[0029] Figure 8 Schematic diagram of the supporting device in the third embodiment of the present invention.

[0030] In the figure: 1, cabinet body; 2, drawer unit; 3, docking head; 4, first motor; 5, first threaded rod; 6, threaded groove; 7, sliding frame; 8, sliding wheel; 9, second motor; 10, second threaded rod; 11, lifting seat; 12, lifting groove; 13, supporting bracket; 14, third motor; 15, conveyor belt; 16, driving roller; 17, driven roller; 18, limiting plate; 19, sliding groove; 20, shielding plate; 21, telescopic groove; 22, telescopic rod; 23, spring; 24, locking block; 25, locking groove; 26, supporting roller. Specific implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] A low-voltage switchgear facilitating quick assembly and maintenance, such as Figures 1-7As shown in the figure, it includes a cabinet body 1. Multiple openings are provided on one side of the cabinet body 1, and corresponding drawer units 2 are respectively installed inside the multiple openings. The side of the cabinet body 1 far from the openings has an operation chamber. Multiple driving devices respectively connected to the drawer units 2 are arranged inside the operation chamber. The driving device includes a first motor 4. A threaded groove 6 is provided on the bottom of the drawer unit 2 near the driving device. A first threaded rod 5 adapted to the threaded groove 6 is provided at the power output end of the first motor 4. Multiple groups of sliding frames 7 respectively in contact with the bottom of the drawer unit 2 are arranged inside the cabinet body 1. Sliding wheels 8 are arranged inside the sliding frames 7. The bottom of the drawer unit 2 abuts against the sliding wheels 8. Lifting grooves 12 are respectively arranged on both sides of the cabinet body 1 where the openings are located. A second threaded rod 10 is arranged inside the lifting grooves 12. A second motor 9 capable of driving the second threaded rod 10 is arranged on the top of the cabinet body 1. A lifting seat 11 is installed on the second threaded rod 10 through threads. One end of the lifting seat 11 extending out of the opening is installed with a bearing bracket 13 through a rotating shaft. The bearing bracket 13 can rotate to a state parallel or perpendicular to the cabinet body 1. Conveyor belts 15 are arranged on both opposite sides of the bearing bracket 13. Both ends of the conveyor belts 15 are respectively installed on the bearing bracket 13 through a driving roller 16 and a driven roller 17. A third motor 14 capable of driving the driving roller 16 is arranged on the side of the bearing bracket 13 far from the conveyor belts 15.

[0034] When it is necessary to inspect or install equipment on the drawer unit 2 at a high position in the cabinet body 1, the support bracket 13 is rotated to a right-angle state with the cabinet body 1, and then the second motor 9 drives the second threaded rod 10 to rotate, driving the lifting seat 11 to move downward, ensuring that the support bracket 13 on the lifting seat 11 is located below the drawer unit 2. Then, by starting the first motor 4, the first threaded rod 5 cooperates with the threaded groove 6 on the drawer unit 2 to drive the drawer unit 2 to extend from the opening of the cabinet body 1. Then, the second motor 9 drives the second threaded rod 10 to rotate, driving the lifting seat 11 to move upward until the conveyor belt 15 on the support bracket 13 driven by the lifting seat 11 abuts against the bottom of the drawer unit 2. Then, under the operation of the first motor 4, the drawer unit 2 is continuously driven to extend out of the cabinet body 1. Since the length of the first threaded rod 5 is at most one-third of the length of the drawer unit 2 (for the stability when driving the first threaded rod 5 to work), therefore, under the operation of the third motor 14, the drawer unit 2 in contact with the conveyor belt 15 can be continuously driven by the driving roller 16 and the driven roller 17 to move onto the support bracket 13. Since a sliding frame 7 capable of contacting the bottom of the drawer unit 2 is arranged inside the cabinet body 1, and the sliding wheels 8 on the sliding frame 7 can abut against the bottom of the drawer unit 2, when the conveyor belt 15 drives the drawer unit 2 to move, the friction between the drawer unit 2 and the cabinet body 1 and the sliding frame 7 can be reduced, facilitating the effective and rapid movement of the drawer unit 2 onto the conveyor belt 15 between the two support brackets 13. The third motor 14 stops working, and the second motor 9 starts, driving the lifting seat 11 to drive the support bracket 13 to descend until it descends to a height convenient for the operator to operate. The second motor 9 stops working, facilitating the operator to stand on the ground to inspect the inside of the drawer unit 2 or install equipment;

[0035] After the operator finishes inspecting or installing the equipment, the second motor 9 drives the support bracket 13 on the lifting seat 11 to move upward through the second threaded rod 10. When the drawer unit 2 rises to the opening at a high position in the cabinet body 1, the third motor 14 drives the conveyor belt 15 to send the drawer unit 2 into the opening of the cabinet body 1 until the threaded groove 6 on the drawer unit 2 abuts against the first threaded rod 5. Under the drive of the first motor 4, through the mutual cooperation of the first threaded rod 5 and the conveyor belt 15, the drawer unit 2 can be reinstalled inside the cabinet body 1;

[0036] Similarly, it is also convenient for the operator to operate the drawer unit 2 at the bottom of the cabinet body 1. Through the above structure, not only can the labor intensity of the operator be reduced, but also the situation where the drawer unit 2 falls due to the operator's slippery hand and hits the operator can be avoided, ensuring the safety of the operator's work.

[0037] Embodiment 2

[0038] On the basis of the first embodiment, a sliding groove 19 is formed in the bottom side of the supporting bracket 13, a shielding plate 20 is installed in the sliding groove 19, the length of the supporting bracket 13 is half of the height of the cabinet body 1, and the shielding plate 20 has the same length as the supporting bracket 13.

[0039] After the operator checks or installs the equipment on the drawer unit 2, since the supporting bracket 13 is rotatably connected to the lifting seat 11, it is convenient to drive the lifting seat 11 to move to the middle of the cabinet body 1 by the second threaded rod 10 under the drive of the second motor 9, and then it is convenient for the operator to manually turn the supporting bracket 13 upwards to a state parallel to the cabinet body 1. Since the shielding plate 20 is installed on the supporting bracket 13 through the sliding groove 19, when the supporting bracket 13 rotates to be parallel to the cabinet body 1, it is convenient for the operator to pull out the shielding plate 20 on the supporting bracket 13 downwards, which can not only avoid the protruding supporting bracket 13 occupying too much space, but also limit the supporting bracket 13 to prevent the supporting bracket 13 from folding downwards again, improving the practicability of the device.

[0040] A limiting plate 18 is arranged at one end of the supporting bracket 13 far away from the lifting seat 11, the limiting plate 18 can be abutted against one end of the shielding plate 20, and magnetic attraction plates are installed at the ends of the shielding plate 20 and the limiting plate 18 where they are abutted against each other.

[0041] The limiting plate 18 can prevent the shielding plate 20 from sliding out of the sliding groove 19, and the magnetic attraction plates on the shielding plate 20 and the limiting plate 18 can prevent the shielding plate 20 from sliding out of the sliding groove 19 and stabbing the operator when the supporting bracket 13 is folded, improving the safety and stability of the device.

[0042] A limiting lock is arranged at one end of the supporting bracket 13 close to the lifting seat 11, and a lock hole adapted to the limiting lock is arranged on the side of one end of the shielding plate 20 close to the limiting plate 18. The distance between the two conveyor belts 15 is less than the width of the drawer unit 2, and the distance between the two shielding plates 20 is the same as the distance between the two conveyor belts 15.

[0043] Not only is it convenient for the two sides of the bottom of the cabinet body 1 to be respectively abutted against the two conveyor belts 15 after the drawer unit 2 extends out of the cabinet body 1, facilitating the complete removal of the drawer unit 2 from the inside of the cabinet body 1, but also when the supporting bracket 13 is folded to be parallel to the side of the cabinet body 1, it can ensure that the conveyor belts 15 and the shielding plates 20 can completely limit the opening of the cabinet body 1, preventing the drawer unit 2 from being randomly pulled out of the cabinet body 1 by others. Moreover, the limiting lock on the supporting bracket 13 and the lock hole on the shielding plate 20 can be cooperated to lock all the drawer units 2 on the cabinet body 1, avoiding the need to open and close each drawer unit 2 separately, reducing the labor intensity, and avoiding that when there are many drawer units 2, there are remaining drawer units 2 not closed, ensuring the practicability of the device.

[0044] One side of the middle part of the lifting groove 12 close to the supporting bracket 13 is provided with a limiting groove. One end of the lifting seat 11 close to the supporting bracket 13 is provided with a telescopic groove 21. A locking groove 25 is provided on the lifting seat 11. The telescopic groove 21 communicates with the locking groove 25. A telescopic rod 22 is installed inside the telescopic groove 21. A locking block 24 adapted to the limiting groove is installed inside the locking groove 25 through a spring 23. One end of the telescopic rod 22 can be connected to the locking block 24.

[0045] Since one end of the telescopic groove 21 is close to the supporting bracket 13, when the supporting bracket 13 is at a right angle to the side surface of the cabinet body 1, the supporting bracket 13 can push the telescopic rod 22 inside the telescopic groove 21 towards the locking groove 25, ensuring that the locking block 24 in the locking groove 25 is separated from the limiting groove, and ensuring that the lifting seat 11 can freely lift and lower along with the second threaded rod 10.

[0046] When it is necessary to lock the drawing unit 2, the lifting seat 11 is driven by the second threaded rod 10 to move to the middle of the cabinet body 1. When the supporting bracket 13 is folded to be parallel to the side surface of the cabinet body 1, under the action of the spring 23, the locking block 24 can be embedded into the limiting groove to limit the position of the lifting seat 11, and the end of the telescopic rod 22 extends out of the telescopic groove 21, avoiding misoperation of the second motor 9, resulting in the inability to effectively lock the drawing unit 2 or avoid damage to the shielding plate 20.

[0047] One end of the drawing unit 2 located inside the cabinet body 1 is provided with a docking head 3. A docking hole adapted to the docking head 3 is provided inside the cabinet body 1. One end of the drawing unit 2 away from the docking head 3 is provided with a handle groove. The length of the drawing unit 2 is less than the length of the supporting bracket 13.

[0048] The equipment inside the drawing unit 2 can be connected through the docking head 3 and the docking hole inside the cabinet body 1. The length of the supporting bracket 13 is greater than that of the drawing unit 2, which is convenient for effectively pulling out the drawing unit 2 completely onto the conveyor belt 15, lifting the drawing unit 2, and the limiting plate 18 on the supporting bracket 13 can effectively prevent the drawing unit 2 from detaching from the conveyor belt 15, ensuring the safety and service life of the drawing unit 2.

[0049] Embodiment III

[0050] A low-voltage switchgear facilitating quick assembly and maintenance includes a cabinet body 1. A plurality of openings are provided on one side of the cabinet body 1, and corresponding drawer units 2 are respectively installed inside the plurality of openings. The side of the cabinet body 1 far from the openings has an operation chamber. A plurality of driving devices respectively connected to the drawer units 2 are arranged inside the operation chamber. The driving device includes a first motor 4. A threaded groove 6 is provided on the bottom of the drawer unit 2 near the driving device. A first threaded rod 5 adapted to the threaded groove 6 is provided at the power output end of the first motor 4. A plurality of sliding frames 7 respectively in contact with the bottom of the drawer unit 2 are arranged inside the cabinet body 1. Sliding wheels 8 are arranged inside the sliding frames 7. The bottom of the drawer unit 2 abuts against the sliding wheels 8. Lifting grooves 12 are respectively provided on both sides of the cabinet body 1 where the openings are located. A second threaded rod 10 is arranged inside the lifting grooves 12. A second motor 9 capable of driving the second threaded rod 10 is arranged on the top of the cabinet body 1. A lifting seat 11 is installed on the second threaded rod 10 by means of threads. One end of the lifting seat 11 extending out of the opening is installed with a supporting device through a rotating shaft. A driving and conveying device is arranged at the upper end of the supporting device. A limiting groove is provided on one side of the middle part of the lifting groove 12 near the supporting bracket 13. A locking mechanism adapted to the limiting groove is arranged on the lifting seat 11. The supporting device can control the switch of the locking mechanism.

[0051] Reference Figure 8 , the supporting device includes a supporting bracket 13. A sliding groove 19 is opened at the bottom of the supporting bracket 13. A shielding plate 20 is installed inside the sliding groove 19. One end of the shielding plate 20 can be rotatably connected to the lifting seat 11. Conveyor belts 15 are respectively arranged on both opposite sides of the two supporting brackets 13. Both ends of the conveyor belts 15 are respectively installed on the shielding plate 20 through a driving roller 16 and a driven roller 17. A third motor 14 capable of driving the driving roller 16 is arranged on the shielding plate 20. One end of the conveyor belt 15 can be connected to one end of the supporting bracket 13 close to the lifting seat 11 through a screw. A pin is arranged at the end of the supporting bracket 13 far from the lifting seat 11. A pin hole cooperating with the pin is provided at the bottom of the drawer unit 2 close to the opening. A supporting roller 26 is installed at one end of the shielding plate 20 close to the lifting seat 11.

[0052] Since the baffle 20 is rotatably connected to the lifting seat 11, and the baffle 20 is installed at the bottom of the supporting bracket 13 through a chute, when the third motor 14 drives the driving roller 16 to rotate, the conveyor belt 15 can be driven to rotate. One end of the supporting bracket 13 close to the lifting seat 11 is connected to the conveyor belt by screws. When the conveyor belt 15 is working, the supporting bracket 13 can be driven to move on the baffle 20. Since there are pins on the supporting bracket 13 and pin holes for cooperating with the pins are provided at the bottom of the drawing unit 2 close to the opening, when the drawing unit 2 is pushed out from the opening of the cabinet body 1 by the operation of the first motor 4, the second threaded rod 10 is rotated by the second motor 9, and the lifting seat 11 can drive the supporting bracket 13 on the baffle 20 to move towards the bottom of the drawing unit 2 until the pin on the supporting bracket 13 is inserted into the pin hole at the bottom of the drawing unit 2, which is convenient for the supporting bracket 13 to drive the drawing unit 2 to move when moving on the baffle 20. When the drawing unit 2 is moved out of the opening of the cabinet body 1 following the supporting bracket 13, the bottom of the drawing unit 2 can also abut against the supporting roller 26 on the baffle 20. Through the cooperation of the supporting roller 26 and the supporting bracket 13, not only can the drawing unit 2 be completely drawn out of the cabinet body 1, but also the stability of the drawing unit 2 can be ensured. Through the cooperation of the pin and the pin hole, it can be ensured that the conveyor belt 15 can effectively draw the drawing unit 2 out of the cabinet body 1, avoiding the situation that the drawing unit 2 cannot be effectively drawn out due to the small friction between the surface of the conveyor belt 15 and the bottom of the drawing unit 2.

[0053] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A low-voltage switchgear that is easy to quickly assemble and repair, comprising a cabinet (1), wherein one side of the cabinet (1) is provided with a plurality of openings, wherein corresponding drawer units (2) are respectively installed inside the plurality of openings, wherein: The cabinet (1) has an operating compartment on a side away from the opening, and a plurality of drive devices are arranged inside the operating compartment and are respectively connected to the drawer unit (2), and the drive device comprises a first motor (4), and a thread groove (6) is arranged on the bottom of the drawer unit (2) near the drive device, and a first threaded rod (5) adapted to the thread groove (6) is arranged at the power output end of the first motor (4), and a plurality of groups of sliding frames (7) are arranged inside the cabinet (1) and are respectively in contact with the bottom of the drawer unit (2), and a sliding wheel (8) is arranged inside the sliding frame (7), and the bottom of the drawer unit (2) abuts against the sliding wheel (8), and the cabinet (1) is located A lifting groove (12) is respectively arranged on both sides of the opening, a second threaded rod (10) is arranged in the lifting groove (12), a second motor (9) capable of driving the second threaded rod (10) is arranged on the top of the cabinet (1), a lifting seat (11) is installed on the second threaded rod (10) through a thread, a supporting device is installed on one end of the lifting seat (11) extending out of the opening through a rotating shaft, a driving conveying device is arranged on the upper end of the supporting device, a limiting groove is provided on one side of the middle of the lifting groove (12) close to the supporting frame (13), a locking mechanism adapted to the limiting groove is arranged on the lifting seat (11), and the supporting device can control the switch of the locking mechanism.

2. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 1, characterized in that: The locking mechanism comprises a telescopic slot (21) arranged at one end of the lifting seat (11) close to the supporting device, the lifting seat (11) is provided with a locking slot (25), the telescopic slot (21) is communicated with the locking slot (25), a telescopic rod (22) is installed inside the telescopic slot (21), a locking block (24) adapted to the limit slot is installed inside the locking slot (25) via a spring (23), and one end of the telescopic rod (22) can be connected to the locking block (24).

3. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 2, characterized in that: The supporting device comprises a supporting frame (13), one end of which can be rotatably connected to a lifting seat (11), and the supporting frame (13) can be rotated to a state parallel to or perpendicular to the cabinet (1), and conveyor belts (15) are arranged on opposite sides of the two supporting frames (13), and the two ends of the conveyor belts (15) are respectively installed on the supporting frame (13) through a driving roller (16) and a driven roller (17), and a third motor (14) capable of driving the driving roller (16) is arranged on the side of the supporting frame (13) away from the conveyor belt (15).

4. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 3, characterized in that: A sliding groove (19) is provided on the bottom side of the support frame (13), a shielding plate (20) is installed in the sliding groove (19), the length of the support frame (13) is half the height of the cabinet (1), and the shielding plate (20) is the same length as the support frame (13).

5. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 4, characterized in that: A limiting plate (18) is provided at one end of the support frame (13) away from the lifting seat (11), and the limiting plate (18) can abut against one end of the shielding plate (20), and the ends of the shielding plate (20) abutting against the limiting plate (18) are both installed with magnetic suction plates.

6. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 5, characterized in that: A limit lock is provided at one end of the support frame (13) close to the lifting seat (11), and a lock hole adapted to the limit lock is provided at the side surface of one end of the shielding plate (20) close to the limit plate (18).

7. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 6, characterized in that: The distance between the two conveyor belts (15) is smaller than the width of the drawer unit (2), and the distance between the two shielding plates (20) is the same as the distance between the two conveyor belts (15).

8. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 7, characterized in that: A docking joint (3) is provided at one end of the drawer unit (2) located inside the cabinet (1); a docking hole for docking with the docking joint (3) is provided inside the cabinet (1); a handle groove is provided at one end of the drawer unit (2) away from the docking joint (3); and the length of the drawer unit (2) is less than the length of the support frame (13).

9. A low-voltage switchgear that is easy to quickly assemble and repair as claimed in claim 2, characterized in that: The supporting device comprises a supporting frame (13), a sliding groove (19) is provided at the bottom of the supporting frame (13), a shielding plate (20) is installed in the sliding groove (19), one end of the shielding plate (20) can be rotatably connected to the lifting seat (11), and conveyor belts (15) are arranged on opposite sides of the two supporting frames (13), and the two ends of the conveyor belts (15) are respectively installed on the shielding plate (20) through a driving roller (16) and a driven roller (17). A third motor (14) capable of driving the active roller (16) is arranged on the baffle plate (20); one end of the conveyor belt (15) can be connected to an end of the support frame (13) close to the lifting seat (11) by means of a screw; an end of the support frame (13) away from the lifting seat (11) is provided with a pin; a pin hole cooperating with the pin is arranged at the bottom of the pulling unit (2) close to the opening; and a supporting roller (26) is installed at one end of the baffle plate (20) close to the lifting seat (11).

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