A high and low voltage switch cabinet that is easy to maintain

Abstract

The present invention discloses a high- and low-voltage switch cabinet that is easy to maintain, and relates to the technical field of electrical cabinets. The high- and low-voltage switch cabinet that is easy to maintain comprises a cabinet body, a drawer is provided inside the cabinet body, a handle is provided on the surface of the drawer, a column is provided on the top of the inner wall of the drawer, a maintenance anti-pinch mechanism is provided on the top of the column, a protection mechanism is provided on the right side of the drawer, an anti-destruction mechanism is provided on the rear end of the drawer, and a convex groove is provided on the rear part of the cabinet body; wherein the maintenance anti-pinch mechanism comprises a grip rod, a connecting shaft, a limit block, a spring plate, a poking block, a hydraulic cylinder, a hydraulic rod, a rotating shaft and a rotating plate, and a circular groove is provided on the top of the column. This invention increases the space available for maintenance, so that the device can be convenient for maintenance personnel to maintain, and prevents the equipment in the drawer from being at the corner connection, which makes the maintenance space of the maintenance personnel narrow and makes maintenance difficult.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical cabinets, in particular to a high and low voltage switch cabinet that is easy to maintain. Background Art

[0002] High and low voltage switchgear is a type of electrical equipment. External lines first enter the main control switch inside the cabinet, and then enter the sub-control switches. Each branch is set up according to its needs. Such as instruments, automatic controls, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage switchgear rooms and high-voltage busbars, such as power plants, and some also have low-frequency load shedding to protect key equipment.

[0003] Patent publication number CN115313196B relates to a high- and low-voltage switchgear cabinet designed for easy maintenance. The cabinet comprises a cabinet body, an electrical component mounting frame, and a cabinet door. The cabinet also includes two supporting members, the cabinet door being provided with an arc-shaped guide. The supporting members comprise a supporting arm, a receiving guide groove, a supporting column, an elastic sliding member, a foot support, and a push-pull support rod. The receiving guide groove is provided on the supporting arm, the elastic sliding member is disposed within the receiving guide groove, the supporting column is disposed at the end of the supporting arm away from the cabinet door, and the supporting column is capable of supporting the bottom of the electrical component mounting frame when the electrical component mounting frame slides out of the cabinet body. One end of the foot support is rotatably connected to one end of the receiving guide groove. The elastic sliding member has a push column that is movable along the outer wall of the arc-shaped guide. The patent has a simple structure, can place the entire switchgear outside the cabinet body, and ensures stability during maintenance. It is easy to operate and highly practical.

[0004] In the above patent, the switch electrical components can be placed as a whole on the outside of the cabinet, and the stability of maintenance is guaranteed, which is convenient for operation and highly practical. However, when maintenance personnel are repairing the drawer-type high and low voltage switch cabinet, when the equipment is at the corners on both sides of the drawer, the narrow space here may affect the maintenance of the maintenance personnel. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high and low voltage switch cabinet that is easy to maintain, solving the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high and low voltage switchgear cabinet that is easy to maintain, comprising a cabinet body, a drawer provided inside the cabinet body, a handle provided on the surface of the drawer, a column provided on the top of the inner wall of the drawer, a maintenance anti-pinch mechanism provided on the top of the column, a protective mechanism provided on the right side of the drawer, an anti-destruction mechanism provided on the rear end of the drawer, and a convex groove provided on the rear portion of the cabinet body;

[0007] Among them, the maintenance anti-pinch mechanism includes a grip rod, a connecting shaft, a limit block, a spring plate, a stamp block, a hydraulic cylinder, a hydraulic rod, a rotating shaft and a rotating plate. A circular groove is opened on the top of the column, and the size of the circular groove is adapted to the limit block. The limit block is rotatably installed in the circular groove, the connecting shaft is fixedly installed on the top of the limit block, the grip rod is fixedly installed on the top of the connecting shaft, and the rotating shaft is rotatably installed on the left and right sides of the bottom of the column, the rotating plate is fixedly installed on the circumferential surface of the rotating shaft, the spring plate is slidably installed on the surface of the rotating plate, the stamp block is fixedly installed on the side of the spring plate close to the rotating plate, the hydraulic cylinder is fixedly installed on the side of the rotating plate close to the spring plate, and the hydraulic rod is fixedly installed on the right side of the bottom of the column. The hydraulic cylinder compresses the liquid into the hydraulic rod through the pipe arranged inside the rotating plate. The liquid pushes the hydraulic rod to extend, and the hydraulic rod extends and is inserted into the fixed groove opened on the rotating shaft. The hydraulic rod is inserted into the fixed groove to fix the rotating shaft, thereby preventing the rotating plate from resetting.

[0008] According to the above technical solution, four groups of rotating plates and spring plates are provided, so that the area of the drawer that is convenient for maintenance is larger. The hydraulic cylinder is on the movement trajectory of the poking block, and the poking block moves toward the rotating plate to push the piston in the hydraulic cylinder to compress.

[0009] According to the above technical solution, a fixing groove is opened on the right side of the rotating shaft, and the fixing groove is adapted to the size of the hydraulic rod. After the hydraulic rod is inserted into the fixing groove, the rotating shaft is fixed. A compression spring is arranged between the spring plate and the rotating plate. The compression spring is responsible for indicating whether the spring plate contacts an object.

[0010] According to the above technical solution, the protection mechanism includes a pressure rod, a triangular rod, a slide, a push block, an oblique block, a power switch, a limiting block, a push rod, a circular shaft, a scraper rod and a filter plate, the pressure rod is slidably mounted on the outer surface of the column, the triangular rod is slidably mounted on the bottom of the drawer, the slide is slidably mounted on the right side of the cabinet, the push block is fixedly mounted on the right side of the slide, the oblique block is slidably mounted on the inner surface of the cabinet, the power switch is fixedly mounted on the inner surface of the cabinet, the limiting block is fixedly mounted on the right side surface of the oblique block, the push rod is hinged on the right side surface of the oblique block, the filter plate is fixedly mounted on the inner right side of the cabinet, the circular shaft is fixedly mounted on the left surface of the filter plate, and the scraper rod is rotatably mounted on the circumferential surface of the circular shaft, the triangular rod moves to the right and contacts the slide, the triangular rod pushes the slide to move to the right, the triangular rod moves to the right and contacts the push block, the triangular block pushes the oblique block to move downward, the oblique block moves downward and contacts the power switch, and the oblique block moves downward to turn off the power switch.

[0011] According to the above technical solution, the triangular rod is on the motion track of the pressure rod, and the downward movement of the pressure rod pushes the triangular rod to move rightward. The slide is on the motion track of the triangular rod, and the rightward movement of the triangular rod pushes the slide to move rightward.

[0012] According to the above technical solution, the inclined block is on the movement track of the push block. The push block moves to the right and pushes the inclined block to move downward. A reset spring is provided between the inclined block and the inner surface of the cabinet, and the reset spring is responsible for resetting the inclined block.

[0013] According to the above technical solution, the anti-destruction mechanism includes a stand, a sliding column, a pushing rod, a wire-taking wheel, a concave rod, an arc block, an L-shaped rod, a transmission column, a rotating block, a limit block, a fixed block, a rotating shaft and a pushing rod. A convex groove is provided at the rear of the cabinet body. The stand is fixedly mounted on the bottom surface of the convex groove, the sliding column is slidably mounted on the top of the stand, the pushing rod is fixedly mounted on the top of the sliding column, the rotating shaft is fixedly mounted on the left and right sides of the sliding column, the wire-taking wheel is rotatably mounted on the circumferential surface of the rotating shaft, the concave rod is slidably mounted on the bottom surface of the convex groove, and the bottom of the left and right sides of the drawer are provided with There is an accommodating groove, the arc block is slidably installed in the accommodating groove, the pushing rod is slidably installed on the top of the concave rod, the fixed block is fixedly installed on the top of the concave rod, the transmission column rotates through the fixed block, the L-shaped rod is fixedly installed on the circumferential surface of the transmission column, the rotating block is fixedly installed on the circumferential surface of the transmission column, the limit block is fixedly installed on the circumferential surface of the transmission column, and a vertical groove is provided at the end of the concave rod. When the concave rod moves toward the direction close to the middle of the cabinet, the concave rod pushes the arc block to move upward, and then the arc block resets and is stuck in the vertical groove. The arc block limits the concave rod from resetting, and the concave rod limits the drawer from continuing to move outward.

[0014] According to the above technical solution, a square groove is provided on the top of the concave rod, and the square groove is adapted to the size of the L-shaped rod. After the L-shaped rod is inserted into the square groove, the concave rod is limited. The arc block is on the movement trajectory of the pushing rod, and the pushing rod moves in the direction close to the arc block to push the arc block to move upward. A V-shaped groove is provided on the side of the concave rod close to the push rod, and the V-shaped groove is responsible for transmitting the thrust of the push rod. The concave rod is on the movement trajectory of the push rod, and the push rod moves in the direction close to the drawer to push the concave rod to move in the direction close to the middle of the device.

[0015] The present invention provides a high and low voltage switchgear that is easy to maintain and has the following beneficial effects:

[0016] (1) In this invention, when the maintenance personnel want to inspect the device, they can hold the handle and pull out the drawer to inspect the equipment in the drawer. When the equipment is at the corner of the drawer, which makes it difficult to inspect, the maintenance personnel can hold the handle and then rotate it clockwise. The limit block will rotate clockwise at the same time to release the limit between the rotating plate and the column. The rotating plate will rotate outward to a horizontal angle, so that the corner of the drawer disappears, increasing the space available for inspection, making the device convenient for maintenance personnel to inspect, and preventing the equipment in the drawer from being at the corner connection, which makes the maintenance space narrow and difficult for the maintenance personnel. When the maintenance is completed and the maintenance personnel reset the turn plate, if any equipment or wiring deviates from its original position, the reset of the turn plate will drive the spring plate to reset. When the spring plate contacts the deviated equipment or wiring, it is compressed, and the spring plate moves toward the turn plate. The poking rod pushes the hydraulic cylinder to compress, and the hydraulic cylinder compresses the liquid into the hydraulic rod through the pipe set inside the turn plate. The liquid pushes the hydraulic rod to extend, and the hydraulic rod extends and inserts into the fixed groove on the rotating shaft. The hydraulic rod is inserted into the fixed groove to fix the rotating shaft, preventing the turn plate from resetting, preventing the equipment or wiring from deviating from its original position and causing damage to the equipment or wiring when the turn plate is closed.

[0017] (2) In this invention, when the maintenance personnel release the limit between the rotating plate and the column, the rotating plate pushes the pressure rod to move downward, the pressure rod pushes the triangular rod to move right, the triangular rod pushes the slide to move right, the triangular block pushes the inclined block to move downward, the inclined block moves downward and contacts the power switch, and the inclined block moves downward to turn off the power switch, preventing the maintenance personnel from forgetting to turn off the power when repairing the equipment, so that the high and low voltage switch cabinets are still energized when the maintenance personnel are working, resulting in safety accidents. At the same time, when the push rod contacts the scraper rod, the scraper rod pushes the push rod to rotate upward, and then the torsion spring resets the push rod. When the maintenance personnel complete the maintenance and reset the rotating plate, the rotating plate resets the slide, the slide resets the inclined block upward, the inclined block resets upward and drives the push rod and the limit block to reset upward. The push rod hits the rear end of the scraper rod, causing the scraper rod to rotate clockwise around the circular axis. The scraper rod rotates clockwise around the circular axis to scrape the dirt on the filter plate, preventing excessive dust in the cabinet from affecting the delicate electronic components, and extending the working time of the filter plate.

[0018] (3) In this invention, when the maintenance personnel quickly pull the drawer, the equipment wiring is released and drives the take-up wheel to rotate. When the pulling force is too large, the reaction force of the take-up wheel is transmitted to the sliding column, causing the sliding column to move toward the drawer. The concave rod pushes the arc block to move upward, and then the arc block is reset by gravity and stuck in the vertical slot. The arc block restricts the reset of the concave rod, and the concave rod restricts the drawer from continuing to move outward, preventing the maintenance personnel from quickly pulling and damaging the electronic components and affecting the wiring of the electronic components. When the maintenance personnel To continue pulling out the drawer, hold the rotating block and rotate it clockwise. The clockwise rotation of the rotating block drives the transmission column to rotate clockwise. The clockwise rotation of the transmission column causes the L-shaped rod to disengage from the square groove and release the limit on the pushing rod. At the same time, the clockwise rotation of the transmission column causes the limit block to clamp the front end of the pushing rod. At this time, pushing the rotating block toward the direction close to the arc block will drive the pushing rod to move toward the direction close to the arc block. The pushing rod pushes the arc block upward to release the limit of the arc block on the concave rod. The concave rod is reset by the spring, and the drawer can move normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structural position relationship between the handle and the column of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the maintenance anti-pinch mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A;

[0023] Figure 5 This is a schematic diagram of the structural position relationship between the stamp block and the hydraulic cylinder of the present invention;

[0024] Figure 6 Schematic diagram of the positional relationship between the compression rod and the triangular rod structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the structural position relationship between the inclined block and the inner wall of the cabinet according to the present invention;

[0026] Figure 8 Schematic diagram of the positional relationship between the triangular rod and the slide structure of the present invention;

[0027] Figure 9 It is a partial structural diagram of the protection mechanism of the present invention;

[0028] Figure 10 Schematic diagram of the structural position relationship between the stand and the inner wall of the cabinet of the present invention;

[0029] Figure 11 This is a schematic diagram of the structural position relationship between the push rod and the concave rod of the present invention;

[0030] Figure 12 This is a schematic diagram of the structural position relationship between the push rod and the arc block of the present invention.

[0031] In the figure: 1, cabinet; 2, drawer; 3, handle; 401, grip; 402, connecting shaft; 403, limit block; 404, spring plate; 405, stamping block; 406, hydraulic cylinder; 407, hydraulic rod; 408, rotating shaft; 409, rotating plate; 501, pressure rod; 502, triangular rod; 503, slide plate; 504, push block; 505, inclined block; 506, power switch; 507, limit Block; 508, push rod; 509, round shaft; 510, scraper rod; 511, filter plate; 601, stand; 602, sliding column; 603, push rod; 604, take-up wheel; 605, concave rod; 606, arc block; 607, L-shaped rod; 608, transmission column; 609, rotating block; 610, limit block; 611, fixed block; 612, rotating shaft; 613, push rod; 7, column. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1-12 One embodiment of the present invention is: a high and low voltage switch cabinet that is easy to maintain, including a cabinet body 1, a drawer 2 is provided inside the cabinet body 1, a handle 3 is provided on the surface of the drawer 2, a column 7 is provided on the top of the inner wall of the drawer 2, a maintenance anti-pinch mechanism is provided on the top of the column 7, a protection mechanism is provided on the right side of the drawer 2, an anti-destruction mechanism is provided at the rear end of the drawer 2, and a convex groove is provided at the rear of the cabinet body 1;

[0034] Among them, the maintenance anti-pinch mechanism includes a grip 401, a connecting shaft 402, a limit block 403, a spring plate 404, a stamp block 405, a hydraulic cylinder 406, a hydraulic rod 407, a rotating shaft 408 and a rotating plate 409. A circular groove is provided on the top of the column 7. The size of the circular groove is adapted to the limit block 403. The limit block 403 is rotatably installed in the circular groove. The connecting shaft 402 is fixedly installed on the top of the limit block 403. The grip 401 is fixedly installed on the top of the connecting shaft 402. The rotating shaft 408 is rotatably installed at the bottom of the column 7. On the left and right sides, the rotating plate 409 is fixedly mounted on the circumferential surface of the rotating shaft 408, the spring plate 404 is slidably mounted on the surface of the rotating plate 409, the stamping block 405 is fixedly mounted on the side of the spring plate 404 close to the rotating plate 409, the hydraulic cylinder 406 is fixedly mounted on the side of the rotating plate 409 close to the spring plate 404, and the hydraulic rod 407 is fixedly mounted on the bottom right side of the column 7 to prevent the rotating plate 409 from resetting, to prevent the equipment or wiring from deviating from the original position and causing damage to the equipment or wiring when the rotating plate 409 is closed.

[0035] Four sets of rotating plates 409 and spring plates 404 are provided, so that the area of the drawer 2 for easy maintenance is larger. The hydraulic cylinder 406 is on the movement trajectory of the poking block 405. The poking block 405 moves toward the rotating plate 409 to push the piston in the hydraulic cylinder 406 to compress.

[0036] A fixing slot is provided on the right side of the rotating shaft 408, which is adapted to the size of the hydraulic rod 407. After the hydraulic rod 407 is inserted into the fixing slot, the rotating shaft 408 is fixed. A compression spring is provided between the spring plate 404 and the rotating plate 409. The compression spring is responsible for indicating whether the spring plate 404 contacts an object.

[0037] The protection mechanism includes a pressure rod 501, a triangular rod 502, a slide 503, a push block 504, an oblique block 505, a power switch 506, a limit block 507, a push rod 508, a circular shaft 509, a scraper 510 and a filter plate 511. The pressure rod 501 is slidably mounted on the outer surface of the column 7, the triangular rod 502 is slidably mounted on the bottom of the drawer 2, the slide 503 is slidably mounted on the right side of the cabinet 1, the push block 504 is fixedly mounted on the right side of the slide 503, the oblique block 505 is slidably mounted on the inner surface of the cabinet 1, and the power switch The switch 506 is fixedly mounted on the inner surface of the cabinet 1, the limiting block 507 is fixedly mounted on the right side surface of the inclined block 505, the push rod 508 is hinged on the right side surface of the inclined block 505, the filter plate 511 is fixedly mounted on the inner right side of the cabinet 1, the circular shaft 509 is fixedly mounted on the left side surface of the filter plate 511, and the scraper rod 510 is rotatably mounted on the circumferential surface of the circular shaft 509 to prevent maintenance personnel from forgetting to cut off the power when repairing the equipment, so that the high and low voltage switch cabinets are still energized when the maintenance personnel are working, resulting in safety accidents.

[0038] The triangular rod 502 is on the motion track of the pressure rod 501. The pressure rod 501 moves downward to push the triangular rod 502 to move rightward. The slide plate 503 is on the motion track of the triangular rod 502. The triangular rod 502 moves rightward to push the slide plate 503 to move rightward.

[0039] The inclined block 505 is on the motion track of the push block 504. The push block 504 moves rightward to push the inclined block 505 downward. A reset spring is provided between the inclined block 505 and the inner surface of the cabinet 1. The reset spring is responsible for resetting the inclined block 505.

[0040] The anti-destruction mechanism includes a stand 601, a sliding column 602, a push rod 603, a take-up wheel 604, a concave rod 605, an arc block 606, an L-shaped rod 607, a transmission column 608, a rotating block 609, a limit block 610, a fixed block 611, a rotating shaft 612 and a push rod 613. A convex groove is provided at the rear of the cabinet 1. The stand 601 is fixedly mounted on the bottom surface of the convex groove. The sliding column 602 is slidably mounted on the top of the stand 601. The push rod 603 is fixedly mounted on the top of the sliding column 602. The rotating shaft 612 is fixedly mounted on the left and right sides of the sliding column 602. The take-up wheel 604 is rotatably mounted on the circumferential surface of the rotating shaft 612. The concave rod 605 It is slidably installed on the bottom surface of the convex groove, and a receiving groove is provided at the bottom of the left and right sides of the drawer 2. The arc block 606 is slidably installed in the receiving groove, the pushing rod 613 is slidably installed on the top of the concave rod 605, the fixed block 611 is fixedly installed on the top of the concave rod 605, the transmission column 608 rotates through the fixed block 611, the L-shaped rod 607 is fixedly installed on the circumferential surface of the transmission column 608, the rotating block 609 is fixedly installed on the circumferential surface of the transmission column 608, the limit block 610 is fixedly installed on the circumferential surface of the transmission column 608, and a vertical groove is provided at the end of the concave rod 605 to prevent maintenance personnel from quickly pulling to damage the electronic components and affecting the wiring of the electronic components.

[0041] A square groove is provided on the top of the concave rod 605, and the square groove is adapted to the size of the L-shaped rod 607. After the L-shaped rod 607 is inserted into the square groove, the concave rod 605 is limited. The arc block 606 is on the movement trajectory of the pushing rod 613. The pushing rod 613 moves in the direction close to the arc block 606 to push the arc block 606 to move upward. A V-shaped groove is provided on the side of the concave rod 605 close to the push rod 603. The V-shaped groove is responsible for transmitting the thrust of the push rod 603. The concave rod 605 is on the movement trajectory of the push rod 603. The push rod 603 moves in the direction close to the drawer 2, pushing the concave rod 605 to move in the direction close to the middle of the device.

[0042] When the maintenance personnel wants to inspect the device, they hold the handle 3 and pull out the drawer 2, so that the equipment in the drawer 2 can be inspected. When the equipment is at the corner of the drawer 2 and it is difficult to inspect, the maintenance personnel can hold the handle 401 at the top of the column 7 and then rotate it clockwise. The handle 401 rotates clockwise to drive the connecting shaft 402 to rotate clockwise, and the connecting shaft 402 rotates clockwise to drive the limit block 403 to rotate clockwise. The limit block 403 rotates clockwise to release the limit of the rotating plate 409 and the column 7, and the rotating plate 409 rotates outward to a horizontal angle, so that the corner of the drawer 2 disappears, increasing the space for inspection, making the device convenient for maintenance personnel to inspect and prevent the equipment in the drawer 2 from being at the corner connection, which makes the maintenance personnel's inspection space narrow and difficult to inspect. When the inspection is completed, the maintenance personnel reset the rotating plate 409. When some equipment or wiring deviates from its original position, the rotating plate 409 resets and drives the spring plate 404 to reset. When the spring plate 404 contacts the deviated equipment or wiring, it is compressed and the spring plate 404 moves in the direction close to the rotating plate 409. The movement of the spring plate 404 in the direction close to the rotating plate 409 drives the stamp block 405 to move in the direction close to the rotating plate 409. The stamp block 405 moves in the direction close to the rotating plate 409 and contacts the hydraulic cylinder 406. The stamp block 405 pushes the hydraulic cylinder 406 to compress. The compressed liquid of the hydraulic cylinder 406 enters the hydraulic rod 407 through the pipe provided inside the rotating plate 409. The liquid pushes the hydraulic rod 407 to extend. The hydraulic rod 407 extends and is inserted into the fixed groove provided on the rotating shaft 408. The hydraulic rod 407 is inserted into the fixed groove to fix the rotating shaft 408, thereby preventing the rotating plate 409 from resetting and preventing the equipment or wiring from deviating from its original position and causing damage to the equipment or wiring when the rotating plate 409 is closed.

[0043] When the maintenance personnel rotates the handle 401 to drive the connecting shaft 402 and the limit block 403 to rotate at the same time, the limit block 403 rotates to the direction of releasing the limit of the rotating plate 409 and the column 7, the rotating plate 409 rotates outward to a horizontal angle, the rotating plate 409 rotates outward to contact the pressure rod 501, the rotating plate 409 pushes the pressure rod 501 to move downward, the pressure rod 501 moves downward to contact the triangular rod 502, the pressure rod 501 pushes the triangular rod 502 to move to the right, the triangular rod 502 moves to the right and contacts The slide plate 503 and the triangular rod 502 push the slide plate 503 to move to the right. The triangular rod 502 moves to the right and contacts the push block 504. The triangular rod 502 pushes the inclined block 505 to move downward. The inclined block 505 moves downward and contacts the power switch 506. The inclined block 505 moves downward to turn off the power switch 506, preventing maintenance personnel from forgetting to cut off the power when repairing the equipment. When the maintenance personnel are working, the high and low voltage switch cabinets are still energized, resulting in safety accidents. At the same time, when the inclined block When 505 moves downward, it drives the limiting block 507 and the push rod 508 to move downward. When the push rod 508 contacts the scraper rod 510, the scraper rod 510 pushes the push rod 508 to rotate upward, and then the torsion spring resets the push rod 508. When the maintenance personnel complete the maintenance and reset the rotating plate 409, the rotating plate 409 is reset, causing the pressure rod 501 to lose its thrust and reset. The reset of the pressure rod 501 causes the triangular rod 502 to lose its thrust and reset. The reset of the triangular rod 502 causes the slide plate 503 to lose its thrust and reset. The reset of the slide plate 503 causes the inclined block 505 to lose its thrust and reset upward. The upward reset of the inclined block 505 drives the push rod 508 and the limiting block 507 to reset upward. The push rod 508 hits the rear end of the scraper rod 510 to cause the scraper rod 510 to rotate clockwise around the circular axis 509. The scraper rod 510 rotates clockwise around the circular axis 509 to scrape off the dirt on the filter plate 511, preventing excessive dust in the cabinet 1 from affecting the precision electronic components, and at the same time extending the working time of the filter plate 511.

[0044] When the maintenance personnel quickly pulls the drawer 2, the equipment wiring is released to drive the take-up wheel 604 to rotate. When the pulling force is too large, the reaction force of the take-up wheel 604 is transmitted to the sliding column 602, causing the sliding column 602 to move in the direction close to the drawer 2. The sliding column 602 moves in the direction close to the drawer 2 and contacts the V-shaped groove opened on the concave rod 605. The sliding column 602 pushes the concave rod 605 to move in the direction close to the middle of the cabinet 1. When the concave rod 605 moves in the direction close to the middle of the cabinet 1, the concave rod 605 pushes the arc block 606 to move upward, and then the arc block 606 resets and gets stuck in the vertical groove. The arc block 606 restricts the concave rod 605 from resetting, and the concave rod 605 restricts the drawer 2 from continuing to move outward, preventing the maintenance personnel from quickly pulling the electronic The components are damaged and the wiring of the electronic components is affected. When the maintenance personnel want to continue to pull out the drawer 2, they hold the rotating block 609 and rotate it clockwise. The rotating block 609 rotates clockwise to drive the transmission column 608 to rotate clockwise. The transmission column 608 rotates clockwise to disengage the L-shaped rod 607 from the square groove and release the limit on the pushing rod 613. At the same time, the transmission column 608 rotates clockwise to cause the limit block 610 to clamp the front end of the pushing rod 613. At this time, pushing the rotating block 609 toward the direction close to the arc block 606 will drive the pushing rod 613 to move toward the direction close to the arc block 606. The pushing rod 613 pushes the arc block 606 to move upward to release the limit of the arc block 606 on the concave rod 605. The concave rod 605 is reset and the drawer 2 can move normally.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high and low voltage switch cabinet that is easy to maintain, comprising a cabinet body (1), characterized in that: A drawer (2) is provided inside the cabinet (1), a handle (3) is provided on the surface of the drawer (2), a column (7) is provided on the top of the inner wall of the drawer (2), an inspection and anti-pinch mechanism is provided on the top of the column (7), a protection mechanism is provided on the right side of the drawer (2), an anti-destruction mechanism is provided at the rear end of the drawer (2), and a convex groove is provided at the rear of the cabinet (1); The maintenance anti-clamping mechanism includes a gripping rod (401), a connecting shaft (402), a limiting block (403), a spring plate (404), a poking block (405), a hydraulic cylinder (406), a hydraulic rod (407), a rotating shaft (408) and a rotating plate (409), wherein a circular groove is provided on the top of the column (7), the size of the circular groove is adapted to the limiting block (403), the limiting block (403) is rotatably mounted in the circular groove, the connecting shaft (402) is fixedly mounted on the top of the limiting block (403), and the gripping rod (401) is fixedly mounted on the connecting shaft ( 402), the rotating shaft (408) is rotatably mounted on the left and right sides of the bottom of the column (7), the rotating plate (409) is fixedly mounted on the circumferential surface of the rotating shaft (408), the spring plate (404) is slidably mounted on the surface of the rotating plate (409), the stamping block (405) is fixedly mounted on the side of the spring plate (404) close to the rotating plate (409), the hydraulic cylinder (406) is fixedly mounted on the side of the rotating plate (409) close to the spring plate (404), and the hydraulic rod (407) is fixedly mounted on the right side of the bottom of the column (7); The protection mechanism comprises a pressure rod (501), a triangular rod (502), a slide plate (503), a push block (504), an inclined block (505), a power switch (506), a limiting block (507), a push rod (508), a circular shaft (509), a scraper rod (510) and a filter plate (511), wherein the pressure rod (501) is slidably mounted on the outer surface of the column (7), the triangular rod (502) is slidably mounted on the bottom of the drawer (2), the slide plate (503) is slidably mounted on the right side of the cabinet (1), and the push block (504) is fixedly mounted on the slide plate (508). 03), the inclined block (505) is slidably mounted on the inner surface of the cabinet (1), the power switch (506) is fixedly mounted on the inner surface of the cabinet (1), the limiting block (507) is fixedly mounted on the right side surface of the inclined block (505), the push rod (508) is hinged on the right side surface of the inclined block (505), the filter plate (511) is fixedly mounted on the inner right side surface of the cabinet (1), the circular shaft (509) is fixedly mounted on the left side surface of the filter plate (511), and the scraper (510) is rotatably mounted on the circumferential surface of the circular shaft (509).

2. The high and low voltage switchgear cabinet that is easy to maintain according to claim 1 is characterized in that: Four groups of the rotating plates (409) and the spring plates (404) are provided, and the hydraulic cylinder (406) is located on the motion track of the poking block (405).

3. The high and low voltage switchgear cabinet that is easy to maintain according to claim 2 is characterized in that: A fixing groove is provided on the right side of the rotating shaft (408), and the fixing groove is adapted to the size of the hydraulic rod (407). A compression spring is provided between the spring plate (404) and the rotating plate (409).

4. The high and low voltage switchgear cabinet that is easy to maintain according to claim 3 is characterized in that: The triangular rod (502) is located on the motion track of the pressure rod (501), and the slide plate (503) is located on the motion track of the triangular rod (502).

5. The high and low voltage switchgear cabinet that is easy to maintain according to claim 4 is characterized in that: The inclined block (505) is located on the motion track of the push block (504), and a return spring is provided between the inclined block (505) and the inner surface of the cabinet (1).

6. The high and low voltage switchgear cabinet that is easy to maintain according to claim 5 is characterized in that: The anti-destruction mechanism comprises a stand (601), a sliding column (602), a push rod (603), a take-up wheel (604), a concave rod (605), an arc block (606), an L-shaped rod (607), a transmission column (608), a rotating block (609), a limit block (610), a fixed block (611), a rotating shaft (612) and a pushing rod (613). A convex groove is provided at the rear of the cabinet (1). The stand (601) is fixedly mounted on the bottom surface of the convex groove. The sliding column (602) is slidably mounted on the top of the stand (601). The push rod (603) is fixedly mounted on the top of the sliding column (602). The rotating shaft (612) is fixedly mounted on the left and right sides of the sliding column (602). The take-up wheel (604) is rotated and mounted The drawer (2) is mounted on the circumferential surface of the rotating shaft (612), the concave rod (605) is slidably mounted on the bottom surface of the convex groove, the bottom of the left and right sides of the drawer (2) are provided with a receiving groove, the arc block (606) is slidably mounted in the receiving groove, the pushing rod (613) is slidably mounted on the top of the concave rod (605), the fixed block (611) is fixedly mounted on the top of the concave rod (605), the transmission column (608) rotates through the fixed block (611), the L-shaped rod (607) is fixedly mounted on the circumferential surface of the transmission column (608), the rotating block (609) is fixedly mounted on the circumferential surface of the transmission column (608), the limit block (610) is fixedly mounted on the circumferential surface of the transmission column (608), and the end of the concave rod (605) is provided with a vertical groove.

7. The high and low voltage switchgear cabinet that is easy to maintain according to claim 6 is characterized in that: A square groove is provided on the top of the concave rod (605), and the square groove is adapted to the size of the L-shaped rod (607). The arc block (606) is located on the motion trajectory of the push rod (613). A V-shaped groove is provided on the side of the concave rod (605) close to the push rod (603). The concave rod (605) is located on the motion trajectory of the push rod (603).

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