An anti-interference device for intelligent low-voltage switch cabinet and use method thereof

Abstract

The application discloses an anti-interference device for an intelligent low-voltage switch cabinet and a use method thereof, which comprises a switch cabinet body and an anti-interference machine box, the outer side of the switch cabinet body is movably connected with a cabinet door through a hinge, and the inner bottom end of the switch cabinet body is fixedly connected with a group of left-right symmetrical slide rails; the height control mechanism is arranged, the control rod is pulled to the inside, at this time, the driving disc is converted from horizontal to vertical, in this process, the driving disc pushes the fixed strip to the outside and pushes the control block to the inside, at this time, the outside of the fixed strip pulls the driving rod to slide out from the opposite side of the control block, meanwhile, the other end of the driving rod pulls the control block to slide to the other control block through the T-shaped sliding block, then the driving disc pushes the control block to the inside through the T-shaped sliding block to the other control block, so that the two limiting blocks clamp the main shaft in the middle position, and then the arc-shaped clamping strip is clamped in the inside of the limiting groove, which is beneficial to limiting the installation position height of the anti-interference machine box.

Description

Technical Field

[0001] This invention relates to the field of intelligent low-voltage switchgear technology, and in particular to an anti-interference device and its usage method for intelligent low-voltage switchgear. Background Technology

[0002] Low-voltage switchgear is suitable for industries such as power plants, petroleum, chemical, metallurgy, textiles, and high-rise buildings, used for power transmission, distribution, and energy conversion. It also ensures that all electrical components are reliably fixed in their designated positions within the cabinet. The cabinet is generally cubic in shape, such as panel-type or box-type, but there are also frustum-shaped cabinets, such as table-type. These cabinets can be single-row or arranged in rows.

[0003] Referring to Chinese invention patent, publication number CN210430432U, entitled "Anti-interference device for a low-voltage switchgear," the device includes a switchgear. A cabinet door is movably connected to the front of the switchgear, with an observation window embedded in the front of the door. Rotating bolts are provided on the side of the door. A distributor and a grounding wire pass through the side of the switchgear. Fixing plates are fixedly installed on both sides of the distributor. Outlet holes are passed through the interior of the fixing plates, and outlet pipes are fixedly connected to the sides of the fixing plates. A placement groove is embedded in the inner wall of the switchgear. A ball bearing groove is fixedly installed on the front of the placement groove, and a ball bearing is movably connected inside the ball bearing groove. A fixing groove is fixedly installed at the bottom of the placement groove, and an anti-interference plate is fixedly installed inside the fixing groove. A working chamber is fixedly installed inside the switchgear. This device, through the distributor, grounding wire, outlet pipe, fixing plate, outlet hole, placement groove, ball bearing, ball bearing groove, and fixing groove, aims to prevent interference to the equipment during the outlet process and to achieve diversified use of the anti-interference device.

[0004] However, some problems still exist in actual use:

[0005] Currently, anti-interference devices are installed in low-voltage switchgear to prevent external factors from interfering with the operation of internal equipment. The anti-interference devices installed inside low-voltage switchgear are generally anti-interference boxes, and the optimal installation position is on both sides of the cabinet. Installing them in the middle of the cabinet not only affects later maintenance and operation, but also hinders the installation of internal components. Secondly, it is not conducive to the heat release generated during the operation of the anti-interference device and internal components, and may also cause some interference to the equipment. Furthermore, the anti-interference device cannot be uniformly arranged horizontally and vertically according to the internal layout of the low-voltage switchgear. Summary of the Invention

[0006] The purpose of this invention is to address the existing problems in the technology of installing anti-interference devices in low-voltage switchgear to prevent external factors from interfering with the operation of internal equipment. These devices are typically anti-interference boxes, with the optimal installation location being on either side of the cabinet. Installing them in the middle not only affects later maintenance and operation but also obstructs the installation of internal components. Furthermore, it hinders heat release during operation of the anti-interference device and internal components, potentially causing interference to the equipment. Additionally, it prevents the anti-interference device from being uniformly arranged horizontally and vertically according to the internal layout of the low-voltage switchgear. Therefore, this invention proposes an anti-interference device and its usage method for intelligent low-voltage switchgear.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An anti-interference device for intelligent low-voltage switchgear includes a switchgear body and an anti-interference box. The switchgear body is movably connected to a cabinet door via a hinge on its outer side. A set of left-right symmetrical slide rails are fixedly connected to the bottom of the switchgear body. A main shaft is slidably connected to the slide rail on one side near the cabinet door connection via a pulley. A fixing block is fixedly connected to the outside of the main shaft directly above the slide rail, and the fixing block is triangular in shape.

[0009] A connecting rod is fixedly connected to the surface of the fixed block. A mounting frame is fixedly connected to the top of the main shaft and the connecting rod. The mounting frame is in the shape of a triangular frame. The top of the main shaft passes through the mounting frame and is movably connected to a pushing mechanism. A height adjustment mechanism is fixedly connected to the top of the fixed block. A height control mechanism is provided on the outside of the main shaft. An anti-interference box is fixedly connected to the side of the height control mechanism away from the switch cabinet.

[0010] Preferably, the height control mechanism includes a limiting block, a control block, a drive rod, a return spring, a fixing bar, and a drive disc. Two limiting blocks are provided and symmetrically arranged. The control blocks are respectively fixedly connected to the outer sides of the limiting blocks. The drive rods respectively extend laterally through both sides of the two control blocks. One end of each drive rod is fixedly connected to a limiting bolt, and the other end of each drive rod is fixedly connected to the side of the fixing bar closest to the control block. The return springs are respectively sleeved on the outer sides of the drive rods, and the return springs are located on opposite sides of the control blocks. The drive disc is located on the opposite side of the fixing bar and the control blocks.

[0011] Preferably, the drive disk has an S-shaped cross-section, and a control rod is fixedly connected to the bottom axis of the drive disk via a connecting shaft. The connecting shaft of the drive disk passes through one end of the control rod and is fitted with a positioning strip on the outside. The other end of the positioning strip is fixedly connected to the bottom of the control block.

[0012] Preferably, each of the limiting blocks has an arc-shaped groove on its opposite side, and an arc-shaped retaining strip is fixedly connected inside the arc-shaped groove. A limiting groove is opened on the outer side of the main shaft. The main shaft vertically passes through the opposite side of the arc-shaped groove, and the arc-shaped groove is adapted to the main shaft. The arc-shaped retaining strip is adapted to the limiting groove.

[0013] Preferably, each of the control blocks has a T-shaped slider fixedly connected to its top, a connecting block slidably connected to the top of the T-shaped slider, and an extension strip fixedly connected to the top surface of each connecting block. The anti-interference housing is fixedly connected to the end of the extension strip away from the connecting block. The connecting rods vertically penetrate the extension strips, and the extension strips are slidably connected to the outer side of the corresponding connecting rods.

[0014] Preferably, the height adjustment mechanism includes a servo motor, a winding roller, a guide wheel, and a steel cable. One end of the steel cable is wound around the outside of the winding roller, and the other end of the steel cable passes through the hub of the guide wheel and is fixedly connected to a bracket. The two ends of the bracket are respectively fixedly connected to the opposite sides of the extension strip. One end of the winding roller is fixedly connected to the output end of the servo motor through a coupling.

[0015] Preferably, the servo motor is fixedly connected to the top surface of the fixing block, the guide wheel is located inside the mounting frame, and the two sides of the guide wheel are movably connected to the inner wall of the mounting frame through a rotating shaft.

[0016] Preferably, the pushing mechanism includes an electric push rod, a folding support frame, and a connector. The top of the connector has a connecting groove, and the telescopic end of the electric push rod is movably connected to the inside of the connecting groove via a rotating shaft. The front end of one end of the folding support frame is movably connected to the bottom outer side of the connector via a collar.

[0017] Preferably, the bottom end of the connector is movably connected to the top end of the main shaft via a bearing, and the end of the electric push rod away from the connector is fixedly connected to the inner rear side of the switch cabinet. The end of the folding support frame away from the connector is movably connected to the inner rear side of the switch cabinet via a rotating shaft, and the folding support frame is located directly below the electric push rod.

[0018] A method of using an anti-interference device for intelligent low-voltage switchgear includes the following steps:

[0019] S1: When the height of the anti-interference box needs to be adjusted, the servo motor is started to drive the winding roller to wind the steel cable. The steel cable slides along the hub of the guide wheel to one end of the winding roller. At this time, the other end of the steel cable is pulled upward by the tension, which causes the extension bar to slide upward on the outside of the connecting rod. The anti-interference box is raised along the trajectory of the extension bar.

[0020] S2. When it is necessary to reduce the height of the anti-interference box, reverse the above steps. At this time, the servo motor controls the winding roller to release the steel cable. Then, due to the gravity of the anti-interference box and each component, the end of the steel cable away from the winding roller moves downward, and the height of the anti-interference box slides down with the extension strip.

[0021] S3. After the anti-interference box height is adjusted, move the control lever inward. At this time, the drive plate changes from horizontal to vertical. During this process, the drive plate will push the fixing bar outward and push the control block inward. At this time, the outer side of the fixing bar pulls the drive rod to slide out from the opposite side of the control block. At the same time, the other end of the drive rod pulls the control block to slide closer to the other control block through the T-shaped slider. Then, the drive plate pushes the control block inward and pushes it closer to the other control block through the T-shaped slider, so that the two limit blocks clamp the spindle in the middle position. Then, the arc-shaped locking strip engages inside the limit groove.

[0022] S4. When the anti-interference box needs to be disassembled and repaired, push the connector outward with the telescopic end of the control electric push rod, so that the bottom of the main shaft slides outward through the pulley inside the slide rail. At the same time, the folding support bar is straightened and extended as the connector slides. When the main shaft slides to the outermost side of the slide rail, hold the connecting rod and pull it outward. At this time, the main shaft rotates and moves the anti-interference box to the opening of the switch cabinet.

[0023] Compared with the prior art, the present invention provides an anti-interference device and method for use in intelligent low-voltage switchgear, which has the following beneficial effects:

[0024] 1. The anti-interference device and its usage method for intelligent low-voltage switchgear utilize a height control mechanism. By pulling the control lever inward, the drive plate changes from horizontal to vertical. During this process, the drive plate pushes the fixing strip outward and presses the control block inward. At this time, the outer side of the fixing strip pulls the drive rod to slide out from the opposite side of the control block. Simultaneously, the other end of the drive rod pulls the control block to slide closer to another control block via the T-shaped slider. Then, the drive plate pushes the control block inward to move closer to another control block via the T-shaped slider, thereby clamping the main shaft in the middle position by the two limit blocks. Furthermore, the arc-shaped locking strip engages inside the limit groove, which facilitates quick height limitation of the installation position of the anti-interference box. It provides a high-performance and convenient fixing method, further reducing the difficulty of installation.

[0025] 2. The anti-interference device and its usage method for intelligent low-voltage switchgear, through the set height adjustment mechanism, starts the servo motor to drive the winding roller to wind the steel cable. The steel cable slides along the hub of the guide wheel to one end of the winding roller. At this time, the other end of the steel cable is pulled upward by the tension, which pulls the bracket upward, so that the extension bar slides upward on the outside of the connecting rod. The anti-interference box rises with the trajectory of the extension bar. This is beneficial to adjust the installation height of the anti-interference box according to the internal components of the switchgear, improves the anti-interference efficiency, and enhances the flexibility of equipment use.

[0026] 3. The anti-interference device and its usage method for intelligent low-voltage switchgear, through the set push mechanism, controls the telescopic end of the electric push rod to push the connector outward, so that the bottom of the main shaft slides outward through the pulley inside the slide rail. At the same time, the folding support bar is straightened and extended as the connector slides. When the main shaft slides to the outermost side of the slide rail, the connecting rod is held and pulled outward. At this time, the main shaft rotates, thereby moving the anti-interference box to the opening of the switchgear. This facilitates the maintenance and replacement of the anti-interference box in the future and avoids the switchgear components from obstructing the operation of maintenance personnel. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of a partial cross-sectional connection structure of the switch cabinet body of the present invention;

[0029] Figure 3 This is a schematic diagram of the spindle connection structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the connecting rod connection structure of the present invention;

[0031] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0032] Figure 6 This is a schematic diagram of the height control mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of a partial connection structure of the height adjustment mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram of the pushing mechanism structure of the present invention.

[0035] In the diagram: 1. Switch cabinet; 2. Anti-interference box; 3. Cabinet door; 4. Slide rail; 5. Main shaft; 6. Fixing block; 7. Connecting rod; 8. Mounting bracket; 9. Pushing mechanism; 901. Push rod; 902. Folding support frame; 903. Connector; 904. Connecting groove; 10. Height control mechanism; 1001. Limiting block; 1002. Control block; 1003. Drive rod; 1004. Return spring; 1005. Fixing strip; 1006. Drive disc; 1007. Control rod; 1008. Positioning strip; 11. Height adjustment mechanism; 1101. Servo motor; 1102. Winding roller; 1103. Guide wheel; 1104. Steel cable; 12. Arc groove; 13. Arc clamp; 14. Limiting groove; 15. T-shaped slider; 16. Connecting block; 17. Extension strip; 18. Bracket. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein. Example

[0038] Reference Figure 1-8 An anti-interference device for intelligent low-voltage switchgear includes a switchgear body 1 and an anti-interference box 2. The switchgear body 1 is movably connected to a cabinet door 3 via a hinge on the outside. A set of left and right symmetrical slide rails 4 are fixedly connected to the bottom of the switchgear body 1. A main shaft 5 is slidably connected to the slide rail 4 on one side near the cabinet door 3 via a pulley. A fixing block 6 is fixedly connected to the outside of the main shaft 5 directly above the slide rail 4, and the fixing block 6 is triangular.

[0039] A connecting rod 7 is fixedly connected to the surface of the fixed block 6. A mounting bracket 8 is fixedly connected to the top of the main shaft 5 and the connecting rod 7. The mounting bracket 8 is in the shape of a triangular frame. The top of the main shaft 5 passes through the mounting bracket 8 and is movably connected to a pushing mechanism 9. A height adjustment mechanism 11 is fixedly connected to the top of the fixed block 6. A height control mechanism 10 is provided on the outside of the main shaft 5. The anti-interference box 2 is fixedly connected to the side of the height control mechanism 10 away from the switch cabinet 1.

[0040] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 The height control mechanism 10 includes a limit block 1001, a control block 1002, a drive rod 1003, a return spring 1004, a fixing bar 1005, and a drive disc 1006. Two limit blocks 1001 are provided and symmetrically arranged. Control blocks 1002 are fixedly connected to the outer sides of the limit blocks 1001. Drive rods 1003 extend laterally through both sides of the two control blocks 1002. Limit bolts are fixedly connected to one end of each drive rod 1003, and the other ends are fixedly connected to the side of the fixing bar 1005 closest to the control blocks 1002. Return springs 1004 are sleeved on the outer sides of the drive rods 1003 and are located on opposite sides of the control blocks 1002. The drive disc 1006 is located on the opposite side of the fixing bar 1005 and the control blocks 1002. The drive disc 1006 has an S-shaped cross-section, and a control rod is fixedly connected to the bottom axis of the drive disc 1006 via a connecting shaft. 1007, the connecting shaft of the drive disc 1006 passes through one end of the control rod 1007 and is fitted with a positioning strip 1008 on its outer side. The other end of the positioning strip 1008 is fixedly connected to the bottom of the control block 1002. Arc-shaped grooves 12 are opened on the opposite sides of the limiting block 1001, and arc-shaped retaining strips 13 are fixedly connected inside the arc-shaped grooves 12. A limiting groove 14 is opened on the outer side of the main shaft 5. The main shaft 5 vertically passes through the opposite side of the arc-shaped grooves 12, and the arc-shaped grooves 12 and the main shaft are connected. The five phases are compatible. The arc-shaped card strip 13 is compatible with the limiting groove 14. The top of the control block 1002 is fixedly connected to the T-shaped slider 15. The top of the T-shaped slider 15 is slidably connected to the connecting block 16. The top surface of the connecting block 16 is fixedly connected to the extension strip 17. The anti-interference box 2 is fixedly connected to the end of the extension strip 17 away from the connecting block 16. The connecting rod 7 passes vertically through the extension strip 17. The extension strip 17 is slidably connected to the outside of the corresponding connecting rod 7.

[0041] By moving the control lever 1007 inward, the drive disc 1006 changes from horizontal to vertical. During this process, the drive disc 1006 pushes the fixing strip 1005 outward and pushes the control block 1002 inward. At this time, the outer side of the fixing strip 1005 pulls the drive lever 1003 to slide out from the opposite side of the control block 1002. At the same time, the other end of the drive lever 1003 pulls the control block 1002 to slide closer to the other control block 1002 through the T-shaped slider 15. Then, the drive disc 1006 pushes the control block 1002 inward to move closer to the other control block 1002 through the T-shaped slider 15. This allows the two limit blocks 1001 to clamp the spindle 5 in the middle position. In addition, the arc-shaped locking strip 13 engages inside the limit groove 14, which is conducive to quickly limiting the installation position and height of the anti-interference box 2. It provides a high-performance and convenient fixing method, and further reduces the difficulty of installation.

[0042] Reference Figure 3 and Figure 7 The height adjustment mechanism 11 includes a servo motor 1101, a winding roller 1102, a guide wheel 1103, and a steel cable 1104. One end of the steel cable 1104 is wound around the outside of the winding roller 1102, and the other end of the steel cable 1104 passes through the hub of the guide wheel 1103 and is fixedly connected to a bracket 18. The two ends of the bracket 18 are respectively fixedly connected to the opposite sides of the extension strip 17. One end of the winding roller 1102 is fixedly connected to the output end of the servo motor 1101 through a coupling. The servo motor 1101 is fixedly connected to the top surface of the fixing block 6. The guide wheel 1103 is located inside the mounting frame 8, and the two sides of the guide wheel 1103 are movably connected to the inner wall of the mounting frame 8 through a rotating shaft.

[0043] By starting the servo motor 1101, the winding roller 1102 is driven to wind and wind the steel cable 1104. The steel cable 1104 slides along the hub of the guide wheel 1103 towards one end of the winding roller 1102. At this time, the other end of the steel cable 1104 is pulled upward by the tension, which pulls the bracket 18, thereby causing the extension bar 17 to slide upward on the outside of the connecting rod 7. The anti-interference box 2 is raised along the trajectory of the extension bar 17, which is beneficial to adjust the installation height of the anti-interference box 2 according to the components inside the switch cabinet 1, improves the anti-interference efficiency, and enhances the flexibility of equipment use.

[0044] The pushing mechanism 9 includes an electric push rod 901, a folding support frame 902, and a connector 903. The top of the connector 903 has a connecting groove 904, and the telescopic end of the electric push rod 901 is movably connected to the inside of the connecting groove 904 via a rotating shaft. The front end of one end of the folding support frame 902 is movably connected to the bottom outer side of the connector 903 via a collar. The bottom end of the connector 903 is movably connected to the top of the main shaft 5 via a bearing. The end of the electric push rod 901 away from the connector 903 is fixedly connected to the rear inside of the switch cabinet 1. The end of the folding support frame 902 away from the connector 903 is movably connected to the rear inside of the switch cabinet 1 via a rotating shaft. The folding support frame 902 is located directly below the electric push rod 901.

[0045] By controlling the telescopic end of the electric push rod 901 to push the connector 903 outward, the bottom of the main shaft 5 slides outward through the pulley inside the slide rail 4. At the same time, the folding support bar is straightened and extended as the connector 903 slides. When the main shaft 5 slides to the outermost side of the slide rail 4, the connecting rod 7 is grasped and pulled outward. At this time, the main shaft 5 rotates, thereby moving the anti-interference box 2 to the opening of the switch cabinet 1. This facilitates the later maintenance and replacement of the anti-interference box 2 and avoids the components of the switch cabinet 1 from obstructing the operation of maintenance personnel.

[0046] Specifically, when the anti-interference device for intelligent low-voltage switchgear needs to be adjusted in height, the servo motor 1101 is started to drive the winding roller 1102 to wind the steel cable 1104. The steel cable 1104 slides along the hub of the guide wheel 1103 towards one end of the winding roller 1102. At this time, the other end of the steel cable 1104 is pulled upward by the tension, causing the extension bar 17 to slide upward on the outside of the connecting rod 7. The anti-interference box 2 rises along the trajectory of the extension bar 17. When it is necessary to lower the anti-interference box 2, the height of the anti-interference box 2 is adjusted. When adjusting the height of anti-interference box 2, reverse the above steps. At this time, servo motor 1101 controls winding roller 1102 to release steel cable 1104. Subsequently, under the action of the gravity of anti-interference box 2 and its components, the end of steel cable 1104 away from winding roller 1102 extends downward, and the height of anti-interference box 2 slides down with extension bar 17. After the height of anti-interference box 2 is adjusted, move control lever 1007 inward. At this time, drive disk 1006 changes from horizontal to vertical. During this process, drive disk 100... 6 will push the fixing bar 1005 outward and push the control block 1002 inward. At this time, the outer side of the fixing bar 1005 pulls the drive rod 1003 to slide out from the opposite side of the control block 1002. At the same time, the other end of the drive rod 1003 pulls the control block 1002 to slide closer to the other control block 1002 through the T-shaped slider 15. Then, the driven disc 1006 pushes the control block 1002 inward to move closer to the other control block 1002 through the T-shaped slider 15, so that the two limiting blocks 1001 clamp the main shaft 5 in the middle. In the middle position, the arc-shaped locking strip 13 is engaged inside the limiting groove 14. When the anti-interference box 2 needs to be disassembled and repaired, the telescopic end of the control electric push rod 901 pushes the connector 903 outward, so that the bottom of the main shaft 5 slides outward inside the slide rail 4 through the pulley. At the same time, the folding support strip is straightened and extended as the connector 903 slides. When the main shaft 5 slides to the outermost side of the slide rail 4, the connecting rod 7 is grasped and pulled outward. At this time, the main shaft 5 rotates, thereby moving the anti-interference box 2 to the opening of the switch cabinet 1.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An anti-interference device for intelligent low-voltage switchgear, comprising a switchgear body and an anti-interference housing, characterized in that, The switch cabinet is hinged to a cabinet door on its outer side. A set of symmetrical slide rails is fixedly connected to the bottom of the switch cabinet. A main shaft is slidably connected to the slide rail on the side closest to the cabinet door via pulleys. A fixing block is fixedly connected to the main shaft on the outer side directly above the slide rail, and the fixing block is triangular in shape. A connecting rod is fixedly connected to the surface of the fixed block. A mounting frame is fixedly connected to the top of the main shaft and the connecting rod. The mounting frame is in the shape of a triangular frame. The top of the main shaft passes through the mounting frame and is movably connected to a pushing mechanism. A height adjustment mechanism is fixedly connected to the top of the fixed block. A height control mechanism is provided on the outside of the main shaft. An anti-interference box is fixedly connected to the side of the height control mechanism away from the switch cabinet. The height control mechanism includes a limit block, a control block, a drive rod, a return spring, a fixing bar, and a drive disc. There are two limit blocks arranged symmetrically. The control blocks are fixedly connected to the outside of the limit blocks respectively. The drive rods pass through both sides of the two control blocks laterally. One end of each drive rod is fixedly connected to a limit bolt, and the other end of each drive rod is fixedly connected to the side of the fixing bar near the control block. The return springs are respectively sleeved on the outside of the drive rods and are located on opposite sides of the control blocks. The drive disc is located on the opposite side of the fixing bar and the control blocks. The drive disk has an S-shaped cross-section, and a control rod is fixedly connected to the bottom axis of the drive disk via a connecting shaft. The connecting shaft of the drive disk passes through one end of the control rod and is fitted with a positioning strip on the outside. The other end of the positioning strip is fixedly connected to the bottom of the control block. The limiting blocks are provided with arc-shaped grooves on opposite sides, and arc-shaped retaining strips are fixedly connected inside the arc-shaped grooves. The main shaft is provided with a limiting groove on the outside. The main shaft vertically penetrates the opposite side of the arc-shaped grooves, and the arc-shaped grooves are adapted to the main shafts. The arc-shaped retaining strips are adapted to the limiting grooves. The top of each control block is fixedly connected to a T-shaped slider, the top of each T-shaped slider is slidably connected to a connecting block, and the top surface of each connecting block is fixedly connected to an extension strip. The anti-interference box is fixedly connected to the end of the extension strip away from the connecting block. The connecting rods pass vertically through the extension strips, and the extension strips are slidably connected to the outside of the corresponding connecting rods. The height adjustment mechanism includes a servo motor, a winding roller, a guide wheel, and a steel cable. One end of the steel cable is wound around the outside of the winding roller, and the other end of the steel cable passes through the hub of the guide wheel and is fixedly connected to a bracket. The two ends of the bracket are fixedly connected to the opposite sides of the extension strip, and one end of the winding roller is fixedly connected to the output end of the servo motor through a coupling.

2. The anti-interference device for intelligent low-voltage switchgear according to claim 1, characterized in that, The servo motor is fixedly connected to the top surface of the fixed block, the guide wheel is located inside the mounting frame, and the two sides of the guide wheel are movably connected to the inner wall of the mounting frame through a rotating shaft.

3. The anti-interference device for intelligent low-voltage switchgear according to claim 2, characterized in that, The pushing mechanism includes an electric push rod, a folding support frame, and a connector. The top of the connector has a connecting groove, and the telescopic end of the electric push rod is movably connected to the inside of the connecting groove via a rotating shaft. The front end of one end of the folding support frame is movably connected to the bottom outside of the connector via a collar.

4. The anti-interference device for intelligent low-voltage switchgear according to claim 3, characterized in that, The bottom end of the connector is movably connected to the top end of the main shaft via a bearing, and the end of the electric push rod away from the connector is fixedly connected to the rear inside of the switch cabinet. The end of the folding support frame away from the connector is movably connected to the rear inside of the switch cabinet via a rotating shaft, and the folding support frame is located directly below the electric push rod.

5. The method of using the anti-interference device for intelligent low-voltage switchgear according to claim 4, characterized in that, Includes the following steps: S1: When the height of the anti-interference housing needs to be adjusted, the servo motor is started to drive the winding roller to wind the steel cable. The steel cable slides along the hub of the guide wheel to one end of the winding roller. At this time, the other end of the steel cable is pulled upward by the tension, which pulls the bracket upward, causing the extension bar to slide upward on the outside of the connecting rod. The anti-interference housing rises along the trajectory of the extension bar. S2. When it is necessary to reduce the height of the anti-interference box, reverse the above steps. At this time, the servo motor controls the winding roller to release the steel cable. Then, due to the gravity of the anti-interference box and each component, the end of the steel cable away from the winding roller moves downward, and the height of the anti-interference box slides down with the extension strip. S3. After the anti-interference box height is adjusted, move the control lever inward. At this time, the drive plate changes from horizontal to vertical. During this process, the drive plate will push the fixing bar outward and push the control block inward. At this time, the outer side of the fixing bar pulls the drive lever out from the opposite side of the control block, so that the two limit blocks clamp the spindle in the middle position. Then the arc-shaped locking strip engages with the inside of the limit groove. S4. When the anti-interference box needs to be disassembled and repaired, push the connector outward with the telescopic end of the control electric push rod, so that the bottom of the main shaft slides outward through the pulley inside the slide rail. At the same time, the folding support bar is straightened and extended as the connector slides. When the main shaft slides to the outermost side of the slide rail, hold the connecting rod and pull it outward. At this time, the main shaft rotates and moves the anti-interference box to the opening of the switch cabinet.

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