Layered arrangement anti-interference low-voltage switch cabinet

Abstract

The application relates to a low-voltage switch cabinet with layered arrangement and anti-interference, and belongs to the technical field of switch cabinets. The device comprises a cabinet body, the inside of the cabinet body is vertically separated into multiple layers of independent sealed cavities, the inside of the sealed cavities is provided with drawer modules, the left and right sides of the bottom of the inner wall of the sealed cavities on the cabinet body are both provided with sliding rails, and the left and right sides of the bottom of the drawer modules are both provided with mounting plates. The device realizes linkage lubrication of the pulleys of the drawer modules, oil recovery storage, automatic oil supplementing and secondary lubrication through a self-lubricating assembly, can effectively solve the problem of jamming of the drawer modules, can avoid splashing of oil to contaminate the internal structure of the cabinet body, can guarantee long-term smooth operation of the pulleys, can complete lifting and loosening of the wire harness and reset clamping operation through linkage of lifting and loosening components with drawer pulling and closing actions, can prevent the wire harness from being pulled and damaged, interference and jamming, and can improve operation stability of the drawer modules and electrical safety of the switch cabinet.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, specifically to a layered, interference-resistant low-voltage switchgear. Background Technology

[0002] Low-voltage switchgear belongs to low-voltage complete switchgear and control equipment, specifically referring to enclosed complete power distribution devices assembled from low-voltage switching components, protection components, measurement and control components, busbars, wiring assemblies, and cabinet load-bearing structural components with AC rated voltage ≤1000V and DC rated voltage ≤1500V. It integrates power distribution, circuit switching, overload and short-circuit protection, signal acquisition, and circuit regulation functions, and is widely used in industrial and mining areas, building power distribution, automated production lines, and municipal power supply and distribution systems. It is a core basic equipment for mid-range power distribution, load regulation, and circuit safety protection in low-voltage power distribution networks. Existing conventional low-voltage switchgear adopts an integrated through-cabinet design with a vertically aligned, neatly layered layout, concentrating the main busbar, power switching devices, and low-voltage control modules in a common cavity, relying on a single partition to achieve basic layering and meet basic power distribution requirements. Based on national standards and industry application conditions, the mainstream classification of low-voltage switchgear is as follows: According to the cabinet installation structure, it is divided into three categories: fixed low-voltage switchgear, drawer-out low-voltage switchgear, and a combination of fixed and drawer-out switchgear. Among them, drawer-out switchgear offers strong modular independence, convenient maintenance and replacement, and higher safety, making it the mainstream choice for industrial automation and power distribution. However, existing low-voltage switchgear has the following shortcomings in actual use:

[0003] The drawer sliding pulleys of existing drawer-type low-voltage switchgear are mostly open-mounted structures, and the cabinet does not integrate a suitable lubrication and oil storage structure or an automatic oil replenishment lubrication structure. During long-term reciprocating use, the friction coefficient between the pulley and the slide rail gradually increases, which can easily lead to problems such as sliding jamming, uneven damping during pulling, and accelerated wear and aging of the pulley, increasing the difficulty of operation and maintenance. At the same time, the secondary control lines and power harnesses at the rear of the drawer mostly use a fixed clamping structure, with limited allowance for wire harness extension. When the drawer is pulled outward, the rear wire harness is constantly under tension, which can easily accelerate the bending and wear of the wire harness sheath and the loosening of the terminals. Under long-term operating conditions, there is a potential risk of wire harness insulation damage, poor wiring contact, and stress fatigue aging of the lines, further reducing the operational stability of the cabinet and the service life of the wire harness.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide a layered, interference-resistant low-voltage switchgear to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a layered, interference-resistant low-voltage switchgear, comprising a cabinet body, the interior of which is vertically divided into multiple independent sealed cavities, and drawer modules are provided inside the sealed cavities. Slide rails are installed on the left and right sides of the bottom of the inner wall of each sealed cavity on the cabinet body. Mounting plates are installed below the left and right sides of each drawer module, and pulleys are rotatably connected to the bottom of the two mounting plates. The cabinet also includes a transmission rod, which is rotatably connected inside the cabinet body below the sealed cavities. A bidirectional threaded rod is connected to the rear end of the transmission rod inside the cabinet body via a bearing, and the outer side of the middle part of the bidirectional threaded rod is connected to the rear end of the transmission rod via a bevel gear set. Both ends of the mounting plate are fitted with threaded movable plates. The mounting plate is equipped with a self-lubricating component, which includes an oil reservoir. The oil reservoir is fixed to the upper surface of the mounting plate by bolts. The mounting plate is equipped with an oil bladder, and the oil bladder and the oil reservoir are connected by an oil inlet pipe. A compression plate is slidably connected to the side of the oil bladder inside the mounting plate, and a wedge plate is fixed to one side of the compression plate. Both the front and rear ends of the oil bladder are equipped with an oil outlet pipe. Both the oil outlet pipe and the oil inlet pipe are equipped with a one-way valve. The back of the cabinet is equipped with an upper cable management plate and a lower cable management plate at equal intervals. A lifting cable loosening component is provided between the upper cable management plate, the lower cable management plate and the back of the drawer module.

[0007] Preferably, the pulley is embedded in the groove of the slide rail, and the pulley and the slide rail are in a rolling fit to realize the sliding of the drawer module.

[0008] Preferably, the mounting plate has an internal cavity, the oil bladder is embedded in the cavity, and the two oil outlet pipes are connected to the reserved through holes of the oil bladder by hot-melt bonding, with the opposite ends of the two oil outlet pipes extending to the side of the pulley respectively.

[0009] Preferably, the two movable plates are arranged in an "L" shape, and the horizontal ends of the movable plates are designed to be inclined. The outer side of the movable plate is connected to the inner wall of the cabinet by a limiting sliding connection, and the positions of the movable plate and the wedge plate correspond to each other.

[0010] Preferably, the mounting plate has symmetrically arranged receiving grooves about the center point of the oil bladder inside, and the receiving grooves are filled with sponge. A second extrusion plate is slidably connected above the receiving grooves on the mounting plate, and a guide rod is fixedly connected to the side of the second extrusion plate. Oil outlet pipes are fixed on both the left and right sides of the receiving groove inside the mounting plate, and an oil guide cotton rod is arranged behind the receiving groove inside the mounting plate. Guide grooves are opened on the lower left and right sides of the sealing cavity on the cabinet.

[0011] Preferably, one end of the second oil outlet pipe is connected to the interior of the receiving groove, and the other end of the second oil outlet pipe extends to the front of the pulley. The oil-guiding cotton rod is inclined, and one end of the oil-guiding cotton rod extends into the interior of the receiving groove and contacts the surface of the sponge. The other end of the oil-guiding cotton rod extends to the side of the pulley, and the other end of the oil-guiding cotton rod is designed with an arc shape.

[0012] Preferably, the lifting and loosening assembly includes a drive block, and two drive blocks are symmetrically fixed to the upper part of the drawer module by bolts. Support plate one and support plate two are fixedly connected at equal intervals to the back of the cabinet. A lead screw is connected to the upper surface of support plate one by a bearing. A driven roller is fixedly sleeved on the outer side of the lower end of the lead screw, and a threaded sleeve is threadedly connected to the outer side of the upper end of the lead screw. A limit rod is fixedly connected between the upper and lower support plates two. A sleeve block is slidably connected to the outer side of each limit rod, and a return spring is wound around the outer side of the upper end of the limit rod. Guide plates are symmetrically bolted to the back of the drawer module below the drive blocks, and active rollers are rotatably connected to the sides of the two guide plates at equal intervals.

[0013] Preferably, the upper and lower cable management plates are fixed to the sides of the upper and lower sets of sleeve blocks by bolts, the two ends of the return spring are fixedly connected to the outer side of the limit rod and the top of the upper sleeve block, the end of the drive block away from the drawer module extends out of the outer surface of the cabinet, and the position of the drive block corresponds to that of the fitting block.

[0014] Preferably, the driven roller contacts and rubs against the surfaces of each driving roller, and the top of the threaded sleeve is fixedly connected to the bottom of the lower wire harness plate by bolts.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When the drawer module experiences drawer jamming, the present invention can complete the torque reversal transmission through a rotating transmission rod in conjunction with a bevel gear set, driving the bidirectional threaded rod to move the two movable plates on both sides in opposite directions. Relying on the inclined surface push-fit structure of the movable plate and the wedge plate, the linkage squeeze plate squeezes the oil bladder, so that the lubricating oil stored inside the oil bladder is delivered to the surface of the pulley through the oil outlet pipe, evenly lubricating the friction contact surface between the pulley and the slide rail, thereby ensuring the smooth drawer module drawer operation for a long time, reducing equipment jamming failures, and reducing the amount of manual maintenance and frequent oil replenishment.

[0017] 2. During the outward pulling of the drawer module, this invention can drive the guide plate and multiple sets of active rollers to move horizontally synchronously. Through the friction transmission between the active rollers and driven rollers, the linkage screw rotates synchronously, driving the threaded sleeve to lift axially, thereby causing the lower wire harness plate to move upward and completing the overall lifting compensation of the secondary wire harness. At the same time, the drive block that moves with the drawer module gradually releases the abutment limit on the contact block, allowing the upper wire harness plate to move upward and reset under the elastic action of the return spring. This releases the clamping constraint of the upper and lower wire harness plates on the wire harness, ensuring that the wire harness remains in a relaxed state during the drawer module's pulling process. This effectively avoids the problems of hard pulling, bending, and damage to the wire harness, and improves the stability of the drawer module's pulling operation.

[0018] 3. When excess lubricating oil is thrown out during the rotation of the pulley, the present invention can guide the oil-guiding cotton rod into the sponge through capillary penetration to complete temporary absorption, effectively avoiding grease splashing and contaminating the electrical components inside the cabinet. Then, when the drawer module is closed, the guide rod slides along the inclined guide groove of the cabinet, driving the second extrusion plate to press down on the sponge, guiding the excess lubricating oil temporarily stored in the sponge to the side of the pulley through the second oil outlet pipe, completing the secondary lubrication operation of the pulley. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the drawer module and cabinet body separation structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the extrusion structure of the driving block and the bonding block of the present invention;

[0022] Figure 4 This is a side sectional view of the mounting plate of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the transmission rod and the bidirectional threaded rod of the present invention and the cabinet body;

[0024] Figure 6 This is a schematic diagram of the separation structure of the upper and lower wire harness plates of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the oil storage box and the mounting plate of the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the bevel gear set, transmission rod, and bidirectional threaded rod of the present invention;

[0027] Figure 9 This is a schematic diagram of the connection structure between the guide groove and the cabinet body of the present invention;

[0028] Figure 10 For the present invention Figure 7Enlarged structural diagram at point A;

[0029] Figure 11 For the present invention Figure 5 Enlarged structural diagram at point B.

[0030] In the diagram: 1. Cabinet body; 2. Drawer module; 3. Slide rail; 4. Mounting plate; 5. Pulley; 601. Oil collection box; 602. Oil bladder; 603. Oil inlet pipe; 604. Oil outlet pipe one; 605. Sponge; 606. Oil outlet pipe two; 607. Wedge plate; 608. Extrusion plate one; 609. Guide rod; 610. Extrusion plate two; 611. Oil guide cotton rod; 612. Guide groove; 7. Transmission rod; 8. Two-way threaded rod 9. Movable plate; 10. Bevel gear set; 11. Upper cable tray; 12. Lower cable tray; 1301. Drive block; 1302. Fitting block; 1303. Limiting rod; 1304. Sleeve block; 1305. Lead screw; 1306. Support plate one; 1307. Threaded sleeve; 1308. Driven roller; 1309. Guide plate; 1310. Driven roller; 1311. Return spring; 1312. Support plate two. Detailed Implementation

[0031] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0032] Please see Figure 1 - Figure 11This invention provides a technical solution: a layered, interference-resistant low-voltage switchgear, comprising a cabinet 1, the interior of which is vertically divided into multiple independent sealed cavities, and drawer modules 2 are provided inside the sealed cavities. Slide rails 3 are installed on the left and right sides of the bottom of the inner wall of the sealed cavities on the cabinet 1. Mounting plates 4 are installed below the left and right sides of the drawer modules 2, and pulleys 5 are rotatably connected to the bottom of the two mounting plates 4. The pulleys 5 are embedded in the grooves of the slide rails 3, and the pulleys 5 and the slide rails 3 are in a rolling fit to achieve the sliding of the drawer modules 2. The invention also includes a transmission rod 7, which is rotatably connected inside the cabinet 1 below the sealed cavities. A bidirectional threaded rod 8 is connected to the rear end of the transmission rod 7 inside the cabinet 1 via a bearing. The outer side of the middle of the bidirectional threaded rod 8 is connected to the rear end of the transmission rod 7 via a bevel gear set 10. Movable plates 9 are threadedly connected to the outer sides of both ends of the bidirectional threaded rod 8. A self-lubricating assembly is provided inside the mounting plates 4, including an oil reservoir 601. 01 is fixedly installed on the upper surface of the mounting plate 4 by bolts. The mounting plate 4 has an oil bladder 602 inside, and the oil bladder 602 is connected to the oil storage box 601 through an oil inlet pipe 603. Inside the mounting plate 4, a compression plate 608 is slidably connected to the side of the oil bladder 602, and a wedge plate 607 is fixed to one side of the compression plate 608. The two movable plates 9 are L-shaped, and the horizontal ends of the movable plates 9 are inclined. The outer side of the movable plates 9 is limited to the inner wall of the cabinet 1. The movable connection is such that the movable plate 9 and the wedge plate 607 are positioned correspondingly. Both the front and rear ends of the oil bladder 602 are provided with oil outlet pipes 604. One-way valves are installed inside the oil outlet pipes 604 and the oil inlet pipes 603. The mounting plate 4 has an internal cavity. The oil bladder 602 is embedded in the cavity. The two oil outlet pipes 604 are connected to the reserved through holes of the oil bladder 602 by hot-melt bonding. The opposite ends of the two oil outlet pipes 604 extend to the side of the pulley 5.

[0033] As one embodiment of the present invention, when the drawer module 2 becomes stuck due to long-term reciprocating pulling, maintenance personnel can rotate the transmission rod 7 for lubrication pretreatment. The torque output by the transmission rod 7 is transmitted through the bevel gear set 10 to drive the bidirectional threaded rod 8 to rotate, causing the two movable plates 9 on both sides to move towards each other. This causes the inner inclined surface of the movable plate 9 to gradually fit against the inclined surface of the wedge plate 607. Then, when the drawer module 2 is pulled outward, the inclined surface of the movable plate 9 continuously pushes the wedge plate 607 to move, simultaneously driving the extrusion plate 608 to extrude the oil bladder 602. The lubricating oil inside the oil bladder 602 is delivered to the surface of the pulley 5 through the oil outlet pipe 604, uniformly lubricating the friction contact surface between the pulley 5 and the slide rail 3, thereby achieving long-term lubrication. To maintain the smooth rolling of pulley 5 and slide rail 3 and prevent the drawer module 2 from jamming when being pulled out, and to push and close the drawer module 2 after maintenance and lubrication, the operator can rotate the transmission rod 7 in the opposite direction. The bidirectional threaded rod 8 will then rotate in the opposite direction, causing the two movable plates 9 on both sides to separate in opposite directions. The pushing force between the movable plate 9 and the wedge plate 607 will gradually disappear. The pressing plate 608 can be reset under the rebound force of the oil bladder 602. The volume of the oil bladder 602 cavity will be restored, and lubricating oil can be drawn from the oil storage box 601 through the oil inlet pipe 603 to achieve self-replenishment of the lubricating oil inside the oil bladder 602. This eliminates the need for frequent opening of the cover to add lubricating oil and improves the convenience of equipment operation and maintenance.

[0034] The mounting plate 4 has symmetrically arranged receiving grooves about the center point of the oil bladder 602 inside, and the receiving grooves are filled with sponge 605. The upper part of the receiving groove on the mounting plate 4 is slidably connected to the extrusion plate 610, and the side of the extrusion plate 610 is fixedly connected to the guide rod 609. The two oil outlet pipes 606 are fixed on both sides of the receiving groove inside the mounting plate 4, and the oil guide cotton rod 611 is arranged behind the receiving groove inside the mounting plate 4. The lower left and right sides of the sealing cavity on the cabinet 1 are provided with guide grooves 612. One end of the oil outlet pipe 606 is connected to the inside of the receiving groove, and the other end of the oil outlet pipe 606 extends to the front of the pulley 5. The oil guide cotton rod 611 is inclined, and one end of the oil guide cotton rod 611 extends into the inside of the receiving groove and contacts the surface of the sponge 605. The other end of the oil guide cotton rod 611 extends to the side of the pulley 5, and the other end of the oil guide cotton rod 611 is designed with an arc shape.

[0035] In one embodiment of the present invention, excess lubricating oil splashed out during the rotation of pulley 5 can be collected by oil-guiding cotton rod 611 and temporarily absorbed by sponge 605 through capillary penetration. This effectively prevents grease from splashing and contaminating the electrical components inside cabinet 1, reduces the frequency of manual oiling and cleaning, and ensures the smoothness of pulley 5 and slide rail 3 in the long term. Then, during the closing stroke of drawer module 2, guide rod 609 slides synchronously along the preset guide groove 612 of cabinet 1. The end section of guide groove 612 adopts a downward inclined structure. As guide rod 609 moves deeper into the groove, it can drive the extrusion plate 610 to move downward, forming a moderate compression on sponge 605. The excess lubricating oil temporarily stored inside sponge 605 seeps out after being squeezed and is guided to the side contact surface of pulley 5 through oil outlet pipe 606, completing the secondary lubrication of the side of pulley 5, covering the friction area of ​​pulley 5 in all directions, and further extending the service life of slide rail 3 and pulley 5.

[0036] The back of cabinet 1 is provided with an upper cable management plate 11 and a lower cable management plate 12 at equal intervals. A lifting cable loosening assembly is provided between the upper cable management plate 11, the lower cable management plate 12 and the back of drawer module 2. The lifting cable loosening assembly includes a drive block 1301. Both drive blocks 1301 are symmetrically fixed to the upper back of drawer module 2 by bolts. Support plate one 1306 and support plate two 1312 are fixedly fixed at equal intervals on the back of cabinet 1. The upper surface of support plate one 1306 is bearing connected to a lead screw 1305. A driven roller 1308 is fixedly sleeved on the outer side of the lower end of lead screw 1305. A threaded sleeve 1307 is threadedly connected to the outer side of the upper end of lead screw 1305. A limit rod 1303 is fixedly connected between the upper and lower support plates two 1312. A sleeve block 1304 is slidably connected to the outer side of each limit rod 1303. Furthermore, a return spring 1311 is wound around the outer side of the upper end of the limit rod 1303. A guide plate 1309 is symmetrically bolted to the back of the drawer module 2 below the drive block 1301. The two guide plates 1309 are rotatably connected to the sides at equal intervals with drive rollers 1310. The upper cable tray 11 and the lower cable tray 12 are respectively fixed to the sides of the upper and lower sets of sleeves 1304 by bolts. The two ends of the return spring 1311 are respectively fixedly connected to the outer side of the limit rod 1303 and the top of the upper sleeve 1304. The end of the drive block 1301 away from the drawer module 2 extends out of the outer surface of the cabinet 1. The position of the drive block 1301 corresponds to that of the fitting block 1302. The driven roller 1308 contacts and rubs against the surface of each drive roller 1310. The top of the threaded sleeve 1307 is fixedly connected to the bottom of the lower cable tray 12 by bolts.

[0037] In one embodiment of the present invention, as the drawer module 2 is pulled outward, it can drive the guide plate 1309 and multiple sets of active rollers 1310 to move horizontally forward. The active rollers 1310 drive the driven rollers 1308 to rotate synchronously through friction transmission, thereby linking the lead screw 1305 to rotate. At this time, the lead screw 1305 drives the threaded sleeve 1307 to lift axially, driving the lower wire harness plate 12 to move upward, realizing secondary wire harness lifting compensation. At the same time, the drive block 1301, which moves with the drawer module 2, gradually disengages from the pressing and limiting position on the contact block 1302. The contact block 1302 and the upper wire harness plate 11 move upward and reset under the elastic action of the return spring 1311, releasing the clamping constraint of the upper wire harness plate 11 and the lower wire harness plate 12 on the wire harness, so that the wire harness is in a relaxed state, thereby effectively preventing the drawer module 2 from being pulled out too far. To address issues such as rigid pulling, bending, damage, and interference of the wiring harness during the process, the wiring harness inside cabinet 1 is arranged neatly. Then, when drawer module 2 retracts and closes, guide plate 1309 and multiple sets of active rollers 1310 move horizontally in opposite directions, driving driven roller 1308 and lead screw 1305 to rotate in opposite directions, causing threaded sleeve 1307 and lower wiring plate 12 to fall back to their original positions. At the same time, drive block 1301 presses against the bonding block 1302 again, causing upper wiring plate 11 to move downwards, so that upper wiring plate 11 and lower wiring plate 12 re-bond, completing the neat clamping and storage of the wiring harness. With the elastic limiting and guiding effect of limit rod 1303, sleeve block 1304 and return spring 1311, independent wiring of each drawer module 2 can be achieved without tangling or interference, effectively improving the neatness of switch cabinet wiring and overall electrical safety.

[0038] Working Principle: When using this layered, interference-resistant low-voltage switchgear, the cabinet 1 first adopts a vertical layered structure design, dividing the interior into multiple independent sealed cavities. Each drawer module 2 and its corresponding wiring harness are independently arranged in their respective sealed cavities, enabling neat and orderly layered wiring harness arrangement. The isolation structure of the independent cavities completely isolates the wiring and movement mechanisms of each layer, avoiding problems such as wire harness entanglement and component interference. If the drawer module 2 experiences jamming after prolonged reciprocating pulling, maintenance personnel can perform lubrication pretreatment by rotating the transmission rod 7. The torque output from the transmission rod 7 is transmitted via the bevel gear set 10, driving the bidirectional threaded rod 8 to rotate synchronously. The rib 8 can drive the two movable plates 9 to move in opposite directions. The inner inclined surface of the movable plate 9 can gradually come into contact with the corresponding inclined surface of the wedge plate 607. After the pre-adjustment is completed, the drawer module 2 is pulled outward. During the pulling process, the wedge plate 607 is displaced by the continuous pushing action of the inclined surface of the movable plate 9. Simultaneously, the linkage compression plate 608 compresses the oil bladder 602. The lubricating oil stored inside the oil bladder 602 can be transported to the surface of the pulley 5 through the oil outlet pipe 604 to achieve auxiliary lubrication of the pulley 5. As the pulley 5 rolls in the slide rail 3, the lubricating oil can be relatively evenly attached to each friction contact surface of the pulley 5. At the same time, during the lubrication operation, the excess lubricating oil on the surface of the pulley 5 is thrown outward by the centrifugal force of rotation. The grease that is discharged can be collected by the nearby oil-guiding cotton rods 611, and then slowly transported to the inside of the sponge 605 by the capillary action of the oil-guiding cotton rods 611. The sponge 605 temporarily absorbs the excess lubricating oil, which can prevent grease from splashing everywhere and contaminating the electrical components inside the cabinet 1, reduce the workload of frequent manual oiling and cleaning, and maintain the smooth rolling state of the pulley 5 and the slide rail 3 for a long time. Then, in the synchronous stage of pulling out the drawer module 2, the drawer module 2 can drive the guide plate 1309 and multiple sets of active rollers 1310 to move forward horizontally in sync. The active rollers 1310 drive the corresponding driven rollers 1308 to rotate synchronously by the friction of the contact surface. The driven rollers 1308 are linked to the matching screw 1305 to return synchronously. As the lead screw 1305 rotates, it drives the threaded sleeve 1307 to rise axially, thereby causing the lower wire harness plate 12 to move upward synchronously, thus completing the secondary overall lifting compensation of the wire harness. At the same time, the drive block 1301, which moves synchronously with the drawer module 2, gradually disengages from the contact limit of the contact block 1302. The contact block 1302 and the upper wire harness plate 11 can be slightly lifted upward under the action of their own elastic components, gradually releasing the clamping constraint of the upper wire harness plate 11 and the lower wire harness plate 12 on the wire harness. During the drawer operation, the wire harness can remain in a relaxed state, reducing the risk of damage from hard pulling, bending and breaking of the wire harness. The wire harness inside the cabinet 1 is arranged in a neat and orderly manner, effectively avoiding the problem of wire harness interference and jamming when the drawer module 2 is pulled out.Finally, when pushing and closing the drawer module 2 after maintenance and lubrication, the operator can rotate the transmission rod 7 in the opposite direction. The bidirectional threaded rod 8 will then rotate in the opposite direction, causing the two movable plates 9 to separate in opposite directions. The pushing force between the movable plates 9 and the wedge plate 607 will gradually disappear. The first extrusion plate 608 can be reset under the rebound force of the oil bladder 602. The volume of the oil bladder 602 cavity will be restored, and lubricating oil can be drawn from the oil storage box 601 through the oil inlet pipe 603 to achieve self-replenishment of the lubricating oil inside the oil bladder 602. This eliminates the need for frequent opening of the cover to add lubricating oil, improving the convenience of equipment operation and maintenance. During the closing stroke of the drawer module 2, the guide rod 609 slides synchronously along the preset guide groove 612 of the cabinet 1. The end section of the guide groove 612 adopts a downward inclined structure. As the guide rod 609 moves deeper into the groove, it can drive the second extrusion plate 610 to move downward, forming a moderate compression on the sponge 605. The excess oil temporarily stored inside the sponge 605... The lubricating oil seeps out after being squeezed and is guided to the side contact surface of the pulley 5 through the oil outlet pipe 606, completing the secondary lubrication of the side of the pulley 5 and fully covering the friction area of ​​the pulley 5, further extending the service life of the slide rail 3 and the pulley 5; during the retraction of the drawer module 2, the guide plate 1309 and the driving roller 1310 move horizontally in opposite directions simultaneously, and the driven roller 1308 and the lead screw 1305 rotate in opposite directions accordingly. The threaded sleeve 1307 and the lower cable tray 12 move along the lead screw. 1305 falls back to its initial position; the synchronously moving drive block 1301 presses against the bonding block 1302 again, causing the upper wire harness plate 11 to move downward. The upper wire harness plate 11 and the lower wire harness plate 12 re-bond, forming a neat clamping and storage for the wire harness. Combined with the elastic limiting and guiding action of the limiting rod 1303, the sleeve block 1304, and the return spring 1311, this ensures that the wiring in each drawer module 2 is independent and does not tangle or interfere with each other, improving the neatness of the switch cabinet's layered wiring and electrical safety.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A layered arrangement anti-interference low-voltage switch cabinet, comprising a cabinet body (1), wherein the cabinet body (1) is vertically divided into multiple independent sealed cavities, and a drawer module (2) is provided inside the sealed cavity, and slide rails (3) are installed on the left and right sides of the bottom of the inner wall of the sealed cavity on the cabinet body (1), and mounting plates (4) are installed on the lower left and right sides of the drawer module (2), and the bottom of the two mounting plates (4) are rotatably connected to pulleys (5); Its features are: It also includes a transmission rod (7), which is rotatably connected inside the cabinet (1) below the sealed cavity. Inside the cabinet (1), a double-threaded rod (8) is connected to the rear end bearing of the transmission rod (7). The outer side of the middle part of the double-threaded rod (8) is connected to the rear end of the transmission rod (7) through a bevel gear set (10). The outer sides of both ends of the double-threaded rod (8) are threadedly connected to movable plates (9). The mounting plate (4) is equipped with a self-lubricating component, which includes an oil storage box (601). The oil storage box (601) is fixedly installed on the upper surface of the mounting plate (4) by bolts. The mounting plate (4) is equipped with an oil bladder (602). The oil bladder (602) and the oil storage box (601) are connected by an oil inlet pipe (603). The mounting plate (4) is slidably connected to the side of the oil bladder (602) with a compression plate (608). A wedge plate (607) is fixed on one side of the compression plate (608). An oil outlet pipe (604) is provided at both the front and rear ends of the oil bladder (602). A one-way valve is installed inside the oil outlet pipe (604) and the oil inlet pipe (603). An upper wire harness plate (11) and a lower wire harness plate (12) are provided at equal intervals on the back of the cabinet (1). A lifting and loosening wire assembly is provided between the upper wire harness plate (11), the lower wire harness plate (12) and the back of the drawer module (2). The mounting plate (4) has symmetrically arranged receiving grooves about the center point of the oil bladder (602) inside, and sponge (605) is provided inside the receiving grooves. A second extrusion plate (610) is slidably connected above the receiving groove on the mounting plate (4). A guide rod (609) is fixedly connected to the side of the second extrusion plate (610). Oil outlet pipes (606) are fixed on both the left and right sides of the receiving groove inside the mounting plate (4). An oil guide cotton rod (611) is provided behind the receiving groove inside the mounting plate (4). Guide grooves (612) are provided below the left and right sides of the sealing cavity on the cabinet (1). One end of the second oil outlet pipe (606) is connected to the inside of the receiving groove, and the other end of the second oil outlet pipe (606) extends to the front of the pulley (5). The oil guide cotton rod (611) is inclined, and one end of the oil guide cotton rod (611) extends into the inside of the receiving groove and contacts the surface of the sponge (605). The other end of the oil guide cotton rod (611) extends to the side of the pulley (5). The other end of the oil guide cotton rod (611) is designed with an arc shape.

2. The layered anti-interference low-voltage switchgear according to claim 1, characterized in that: The pulley (5) is embedded in the groove of the slide rail (3), and the pulley (5) and the slide rail (3) are in a rolling fit to realize the pull-out and sliding of the drawer module (2).

3. A layered, interference-resistant low-voltage switchgear according to claim 1, characterized in that: The mounting plate (4) has an internal cavity, and the oil bladder (602) is embedded in the cavity. The two oil outlet pipes (604) are connected to the reserved through holes of the oil bladder (602) by hot-melt bonding, and the opposite ends of the two oil outlet pipes (604) extend to the side of the pulley (5).

4. A layered, interference-resistant low-voltage switchgear according to claim 1, characterized in that: The two movable plates (9) are set in an "L" shape, and the horizontal end of the movable plate (9) is designed to be inclined. The outer side of the movable plate (9) is connected to the inner wall of the cabinet (1) by a limiting sliding connection. The movable plate (9) and the wedge plate (607) are positioned corresponding to each other.

5. A layered, interference-resistant low-voltage switchgear according to claim 1, characterized in that: The lifting and loosening assembly includes a drive block (1301). Two drive blocks (1301) are symmetrically fixed to the upper part of the drawer module (2) by bolts. Support plate one (1306) and support plate two (1312) are fixedly connected at equal intervals to the rear of the cabinet (1). The upper surface of support plate one (1306) is bearing connected to a lead screw (1305). A driven roller (1308) is sleeved and fixed on the outer side of the lower end of the lead screw (1305), and a threaded connection is sleeved on the outer side of the upper end of the lead screw (1305). A threaded sleeve (1307) is attached, and a limit rod (1303) is fixedly connected between the upper and lower support plates (1312). A sleeve block (1304) is slidably connected to the outer side of the limit rod (1303), and a return spring (1311) is wound around the outer side of the upper end of the limit rod (1303). A guide plate (1309) is symmetrically bolted to the back of the drawer module (2) below the drive block (1301), and active rollers (1310) are rotatably connected to the sides of the two guide plates (1309) at equal intervals.

6. A layered, interference-resistant low-voltage switchgear according to claim 5, characterized in that: The upper cable tray (11) and the lower cable tray (12) are respectively fixed to the sides of the upper and lower sets of sleeves (1304) by bolts. The two ends of the reset spring (1311) are respectively fixedly connected to the outer side of the limit rod (1303) and the top of the upper sleeve (1304). The end of the drive block (1301) away from the drawer module (2) extends out of the outer surface of the cabinet (1), and the position of the drive block (1301) corresponds to that of the fitting block (1302).

7. A layered, interference-resistant low-voltage switchgear according to claim 6, characterized in that: The driven roller (1308) rubs against the surfaces of each driving roller (1310), and the top of the threaded sleeve (1307) is fixedly connected to the bottom of the lower wire harness plate (12) by bolts.

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