Removable high-voltage switch cabinet with modularized microcomputer protection device

Abstract

The invention relates to the technical field of high-voltage switch cabinets, and discloses a removable high-voltage switch cabinet with a modular microcomputer protection device, the removable high-voltage switch cabinet comprises a cabinet body for mounting a relay and a cleaning mechanism, the cleaning mechanism comprises a plurality of dust removal assemblies, and each dust removal assembly comprises an extension pipe and a fixed pipe; the suction assembly is communicated with the plurality of dust removal assemblies through the conveying assembly, and the suction assembly is extruded, so that suction force is generated at the extension pipe to suck and remove impurities at the relay contact; when the relay is installed in a cabinet handcart chamber, the handcart tray is pushed to enable the relay to move, the suction assembly is extruded to generate suction force, the suction force is transmitted to the dust removal assembly through the conveying assembly, negative pressure is formed at the positions of the extension pipe and the fixed pipe, and impurities such as dust and metal chippings at the position of a relay contact are accurately sucked away. And the extension pipe and the fixed pipe can synchronously move along with the relay contact, so that the effect that the contact end of the relay contact is cleaned firstly and then the relay contact is adjusted to be cleaned is achieved.

Description

Technical Field

[0001] This invention belongs to the field of high voltage switchgear technology, and particularly relates to a removable high voltage switchgear with a modular microcomputer protection device. Background Technology

[0002] Removable high-voltage switchgear is the core equipment for realizing the on / off control of high-voltage circuits, equipment protection, and operation and maintenance. It is used in high-voltage power supply scenarios such as substations, industrial plants, and high-rise buildings. Its core advantage lies in the independent handcart compartment structure inside the cabinet, which enables flexible movement and rapid replacement of key electrical components such as relays and circuit breakers.

[0003] The installation of the relay involves fixing the relay to the preset installation position on the handcart tray, ensuring that the bottom of the relay fits snugly against the tray's positioning structure. Then, the handcart tray is pushed along the guide rail inside the handcart compartment, causing the tray to move the relay along the rail into the handcart compartment. During this process, the relay contacts must be precisely aligned with the wiring interface on the side wall of the cabinet, ensuring that the contact axis and the wiring interface axis are collinear. After the handcart tray has moved to the preset initial position, the switch cabinet door is closed, and a special wrench is used to rotate the mounting movement structure at the bottom of the relay, driving the relay to move slowly along the axial direction until the relay contacts are fully inserted into the cabinet's wiring interface, completing the electrical connection and installation fixation.

[0004] However, during the installation process, relays may carry impurities. These impurities include dust and residual grease particles accumulated inside the cabinet, floating impurities entering from the outside environment with the opening and closing of the cabinet door, and metal shavings from long-term storage or slight oxidation of the relay contacts. These impurities tend to adhere to the surface of the relay contacts (especially the contact end between the contacts and the wiring interface) during installation. When the relay contacts are inserted into the wiring interface, the attached impurities are squeezed onto the contact surface, leading to increased contact resistance and decreased conductivity. This can cause abnormal voltage drop in the circuit, affecting signal transmission accuracy, or even cause localized overheating, poor contact, or even arc discharge, burning the plating on the contact surface or the wiring interface. Summary of the Invention

[0005] The purpose of this invention is to provide a withdrawable high-voltage switchgear with a modular microcomputer protection device to solve the technical problem of poor contact caused by impurities remaining during relay contact installation in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A removable high-voltage switchgear with a modular microcomputer protection device includes a cabinet for installing relays and a cleaning mechanism installed inside the cabinet's handcart compartment. The cleaning mechanism includes: multiple dust removal components, each including a fixed tube with an extension tube slidably mounted inside; a suction component connected to the multiple dust removal components via a conveying component, which, during the installation of the relay into the cabinet, squeezes the suction component to generate suction at the extension tube to remove impurities from the relay contacts; and a rack for driving the dust removal components and, during the installation of the relay into the cabinet, controls the movement of the extension tube within the fixed tube according to the size of the relay contacts to maintain the suction distance between the dust removal components and the relay contacts.

[0008] Preferably, the suction assembly includes: a fixed box, which is fixedly installed inside the cabinet, and two pistons are slidably installed inside the box; a squeezing column, which is slidably installed on the fixed box; and a rotating plate, with rotating seats rotatably installed at both ends, and the two rotating seats are respectively fixedly connected to the pistons and the squeezing column.

[0009] Preferably, the suction assembly further includes: a first spring, located inside the fixing box, with one end fixedly connected to the fixing box and the other end fixedly connected to the extrusion column.

[0010] Preferably, the conveying assembly includes: a mounting tube, fixedly mounted on the top of the fixing box, with a U-shaped tube slidably mounted inside it; and a connecting tube frame, fixedly mounted on the U-shaped tube.

[0011] Preferably, the conveying assembly further includes a sliding block, which is slidably mounted on the connecting tube frame and fixedly connected to the rack.

[0012] Preferably, the dust removal assembly includes: a hollow ring, fixedly installed on the connecting pipe frame and fixedly connected to the fixed pipe; and a first screw, rotatably installed on the hollow ring, on which a threaded bracket fixedly connected to the extension pipe is threadedly connected.

[0013] Preferably, the dust removal assembly further includes: a rotating disk rotatably mounted on the hollow ring, on which a plurality of first and second locking teeth are fixedly mounted; and a first gear fixedly mounted on the first screw.

[0014] Preferably, the cleaning mechanism further includes an adjustment component, which includes: a connecting box, fixedly installed on the extrusion column, on which a second screw is rotatably installed; and a threaded column, slidably connected to the connecting box and threadedly connected to the second screw, on which a first magnetic plate is fixedly installed.

[0015] Preferably, the adjustment assembly further includes: a second gear, fixedly mounted on the second screw; and a drive frame, slidably mounted inside the connecting box and meshing with the second gear.

[0016] Preferably, the conveying assembly further includes: a fixed disk, fixedly mounted on the mounting tube; and a second magnetic block, fixedly mounted on the U-shaped tube and connected to the fixed disk via a second spring.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. When the relay in this invention is installed in the cabinet handcart compartment, pushing the handcart tray moves the relay, squeezing the suction component to generate suction. The suction is transmitted to the dust removal component through the conveying component, creating a negative pressure at the extension tube and the fixed tube, which accurately removes dust, metal shavings and other impurities from the relay contacts. The extension tube and the fixed tube move synchronously with the relay contacts, achieving the effect of first cleaning the contact end of the relay contacts, and then deforming to clean the relay contacts themselves.

[0019] 2. During installation, the change in the contact size of the relay in this invention triggers the rack-driven dust removal component to operate. The rack engages with the first tooth of the rotating disk, causing the rotating disk to rotate. The rotating disk drives the first gear and the first screw to rotate through the second tooth, causing the threaded frame to slide the extension tube inside the fixed tube. This process can dynamically maintain the optimal dust removal distance between the extension tube and the contact according to the change in the size of the relay contact, avoiding the problems of scratching the contact due to the distance being too close or insufficient suction due to the distance being too far, which are caused by the traditional fixed dust removal distance, and ensuring that contacts of different sizes can be effectively dusted.

[0020] 3. In this invention, the first magnetic plate and the second magnetic block are magnetically repulsive. When the relay is installed to the point where the contact is about to be connected to the cabinet wiring interface, it needs to overcome the magnetic repulsion force to push it, generating a stepped force change prompt to remind the operator to slow down the movement speed and avoid the contact and interface from being damaged by impact.

[0021] 4. In this invention, if there is a deviation in the length of the relay contact, the drive frame of the adjustment component can be driven to mesh with the second gear to drive the second screw to rotate. The threaded column drives the first magnetic plate to move, and the U-shaped tube and connecting tube frame are pushed by magnetic repulsion to adjust the position of the dust removal component, ensuring that the extension tube is always aligned with the contact, thereby improving the dust removal effect on the relay contact. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the assembly structure of the cabinet and the cleaning mechanism in this invention;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the dust removal component and the conveying component in this invention;

[0026] Figure 4 This is a schematic diagram of the assembly structure of the suction component in this invention;

[0027] Figure 5 In this invention Figure 4 Enlarged schematic diagram of part A;

[0028] Figure 6 This is a schematic diagram of the assembly structure of the adjustment component in this invention;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the transmission component in this invention;

[0030] Figure 8 This is a schematic diagram of the assembly structure of the dust removal component in this invention;

[0031] Figure 9 In this invention Figure 8 Enlarged schematic diagram of part B;

[0032] Figure 10 This is a schematic diagram of the assembly structure of the extension tube and the fixed tube in this invention.

[0033] Reference numerals: 100, cabinet; 200, cleaning mechanism; 210, dust removal component; 211, hollow ring; 212, rotating disk; 213, first locking tooth; 214, second locking tooth; 215, first gear; 216, first screw; 217, extension tube; 218, threaded bracket; 219, fixing tube; 220, suction component; 221, fixing box; 222, first spring; 223, rotating plate; 224, rotating seat; 2 25. Piston; 226. Extrusion column; 230. Adjustment assembly; 231. Drive frame; 232. Connecting box; 233. Second screw; 234. Second gear; 235. First magnetic plate; 236. Threaded column; 240. Transmission assembly; 241. Connecting tube rack; 242. Sliding block; 243. U-tube; 244. Second magnetic block; 245. Second spring; 246. Mounting tube; 247. Fixed plate; 250. Rack. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0037] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0038] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1: As Figures 1 to 10 As shown, a withdrawable high-voltage switchgear with a modular microcomputer protection device includes a cabinet 100 for installing relays and a cleaning mechanism 200 installed inside the handcart compartment of the cabinet 100. The cleaning mechanism 200 includes a dust removal component 210, a suction component 220, an adjustment component 230, a conveying component 240, and a rack and pinion 250.

[0041] The dust removal assembly 210 includes a fixed tube 219 with an extension tube 217 slidably mounted inside; the suction assembly 220 is connected to multiple dust removal assemblies 210 via a conveying assembly 240, and during the process of installing the relay into the cabinet 100, the suction assembly 220 is squeezed to generate suction at the extension tube 217 to remove impurities from the relay contacts; the rack 250 is used to drive the dust removal assembly 210 to run, and during the process of installing the relay into the cabinet 100, the rack 250 controls the extension tube 217 to move inside the fixed tube 219 according to the size of the relay contacts to maintain the suction distance between the dust removal assembly 210 and the relay contacts.

[0042] It should be noted that the relay contacts have a cylindrical structure, consisting of multiple cylinders of different diameters. When installing the relay into the cabinet 100's handcart compartment, the relay must first be fixed to the handcart tray. Initial positioning is achieved using the guide rails inside the handcart compartment, ensuring that the relay contacts align with the wiring interfaces inside the cabinet 100. Then, the handcart tray is slowly moved into the handcart compartment. After the relay is placed in the compartment, the cabinet door of the cabinet 100 is closed. The relay is moved by rotating the movable structure mounted at its bottom using a wrench. This movement compresses the suction component 220, generating suction. This suction is transmitted to the dust removal unit via the transmission component 240. At component 210, the extension tube 217 and the fixed tube 219 on the dust removal component 210 are aligned with the relay contacts. This allows the suction force to clean the relay contacts, preventing impurities from affecting the connection between the relay contacts and the wiring interface on the cabinet 100. As the relay moves, the dust removal component 210 is first squeezed to a position where it cannot move, and then the contacts continue to move through the dust removal component 210. During this process, the rack 250 drives the dust removal component 210, causing the extension tube 217 to move on the fixed tube 219, changing the suction distance between the dust removal component 210 and the relay contacts. This effectively changes according to the structure of the relay contacts, ensuring that the best suction force is applied to the relay contacts.

[0043] Furthermore, the cabinet 100 is equipped with a modular microcomputer protection device. This modular microcomputer protection device is fixed to the secondary equipment area of ​​the switchgear by a special mounting bracket. It contains an independent data acquisition module, protection control module, communication module and power supply module. It can collect the operating parameters of the switchgear in real time, such as bus voltage, branch current and cabinet temperature. When faults such as short circuit, overload, and insulation damage are detected, it can independently trigger protection commands to cut off the fault circuit. At the same time, it uploads the fault information to the background monitoring system through the communication module.

[0044] like Figure 4 and Figure 5 As shown, the suction assembly 220 includes a fixed box 221, a first spring 222, a rotating plate 223, a rotating seat 224, a piston 225, and a squeezing column 226;

[0045] The fixed box 221 is fixedly installed inside the cabinet 100. Two pistons 225 are slidably installed inside the fixed box 221. The extrusion column 226 is slidably installed on the fixed box 221. Rotating plates 223 are rotatably mounted on both ends of the rotating plate 224. The two rotating seats 224 are fixedly connected to the pistons 225 and the extrusion column 226 respectively. The first spring 222 is located inside the fixed box 221. One end of the first spring 222 is fixedly connected to the fixed box 221, and the other end of the first spring 222 is fixedly connected to the extrusion column 226.

[0046] It should be noted that when the relay is moved and installed in the truck compartment, it will squeeze the squeezing column 226, causing the squeezing column 226 to squeeze the rotating plate 223. This will cause the rotating plate 223 to rotate, thereby squeezing the piston 225. The movement of the piston 225 will draw suction at the center of the fixed box 221, generating suction force. This suction force will be transmitted to the dust removal component 210 through the transmission component 240, so that the extension tube 217 and the fixed tube 219 on the dust removal component 210 can generate suction force. Since the extension tube 217 and the fixed tube 219 can be aligned with the relay contacts, the dust of the relay contacts can be accurately sucked, avoiding impurities from affecting subsequent connections. In addition, air supply pipes can be connected to the left and right sides of the fixed box 221, so that the pipes are aligned with the sliding rails at the bottom of the relay. With the help of the airflow squeezed out by the piston 225, the surrounding impurities are cleaned, preventing impurities from affecting the movement and installation of the relay.

[0047] like Figure 3 and Figures 7 to 10 As shown, the conveying assembly 240 includes a connecting tube frame 241, a sliding block 242, a U-shaped tube 243, a second magnetic block 244, a second spring 245, a mounting tube 246, and a fixing plate 247.

[0048] The mounting tube 246 is fixedly installed on the top of the fixing box 221. A U-shaped tube 243 is slidably installed inside the mounting tube 246. The U-shaped tube 243 is fixedly installed on the connecting tube bracket 241. The sliding block 242 is slidably installed on the connecting tube bracket 241 and is fixedly connected to the rack 250.

[0049] The dust removal assembly 210 includes a hollow ring 211, a rotating disk 212, a first retaining tooth 213, a second retaining tooth 214, a first gear 215, a first screw 216, an extension tube 217, a threaded bracket 218, and a fixed tube 219.

[0050] Hollow ring 211 is fixedly installed on connecting pipe bracket 241 and fixedly connected to fixed pipe 219; first screw 216 is rotatably installed on hollow ring 211 and threaded bracket 218 fixedly connected to extension pipe 217 is threadedly connected to first screw 216; rotating disk 212 is rotatably installed on hollow ring 211 and several first locking teeth 213 and second locking teeth 214 are fixedly installed on rotating disk 212; first gear 215 is fixedly installed on first screw 216.

[0051] It should be noted that the suction force generated by the piston 225 in the fixed box 221 is transmitted to the extension tube 217 and the fixed tube 219 through the connecting tube bracket 241. After the relay contact is placed inside the handcart compartment, it is located inside the hollow ring 211 and can be cleaned by the extension tube 217 and the fixed tube 219. Since the U-shaped tube 243 is slidably installed inside the mounting tube 246, the connecting tube bracket 241 can drive multiple dust removal components 210 to move. This allows the dust removal components 210 to move synchronously during the continuous installation of the relay, effectively cleaning the contact end of the relay contact. Even when the dust removal components 210 can no longer move, the relay contact can still move. At this time, it will move into the wiring interface of the cabinet 100. Since a magnetic block is fixedly installed on the inner wall of the left side of the cabinet 100, and the rack 250 is also embedded in it, the dust removal components 210 can move synchronously. There are magnetic blocks, and the two magnetic blocks attract each other. When the magnetic block on the rack 250 moves to the magnetic block at the cabinet 100, the rack 250 will move due to the magnetic force. In this way, the rack 250 will cause the rotating disk 212 to rotate through the meshing first tooth 213. The rotation of the rotating disk 212 will cause the first gear 215 to rotate with the help of the meshing second tooth 214. The rotation of the first gear 215 will cause the first screw 216 to rotate. The rotation of the first screw 216 will cause the threaded frame 218 to drive the extension tube 217 to move. In this way, the extension tube 217 can be moved out of the fixed tube 219 to fit the reduced size of the relay contact. This prevents the contact from carrying impurities into the wiring interface of the cabinet 100, leaving impurities in the wiring interface and affecting subsequent use. In addition, the extension tube 217 extends out to ensure the dust collection distance between the dust removal component 210 and the relay contact, avoiding excessive suction distance and reducing the dust removal effect on the relay contact.

[0052] The magnetic blocks on the inner wall of the cabinet 100 can change position according to the size of the relay contacts, thus adapting to different styles of relay contacts. This allows the dust removal component 210 to maintain a suction distance for relay contacts of different sizes, thus maintaining the dust removal effect.

[0053] The working principle of this embodiment:

[0054] When installing the relay and cleaning impurities from its contacts, first fix the relay on the handcart tray. Initial positioning is achieved using the guide rails inside the cabinet 100, ensuring the relay contacts align with the internal wiring interface of the cabinet 100. After closing the cabinet 100 door, use a special wrench to rotate the mounting mechanism at the bottom of the relay, driving the relay axially towards the wiring interface to begin the cleaning process.

[0055] During the relay movement, the squeezing column 226 of the suction assembly 220 is squeezed, and the squeezing column 226 compresses the first spring 222 inside the fixed box 221 and slides into the fixed box 221. The squeezing column 226 drives the rotating plate 223 to rotate through the rotating seat 224 at its end. The other end of the rotating plate 223 pushes two pistons 225 to slide synchronously towards the center inside the fixed box 221 through the rotating seat 224. The sliding of the pistons 225 creates a negative pressure in the central area of ​​the fixed box 221, generating suction and providing power for subsequent impurity adsorption. At the same time, the air supply pipes connected to the left and right sides of the fixed box 221 use the airflow squeezed out by the pistons 225 to clean the impurities around the handcart compartment slide rail, preventing impurities from affecting the movement and installation of the relay.

[0056] The suction force generated by the fixed box 221 is transmitted to the U-shaped tube 243 through the top mounting tube 246. The U-shaped tube 243 then transmits the suction force to the connecting tube frame 241. Since the U-shaped tube 243 can slide along the mounting tube 246, the connecting tube frame 241 drives multiple dust removal components 210 to move synchronously with the relay, ensuring that the dust removal components 210 are always aligned with the relay contacts. The sliding block 242 moves with the connecting tube frame 241, preparing for the subsequent drive of the dust removal components 210 by the rack 250.

[0057] The connecting tube bracket 241 transmits suction to the hollow ring 211 of the dust removal assembly 210. The hollow ring 211 guides the suction into the fixed tube 219 and the internal extension tube 217. At this time, the relay contact is located inside the hollow ring 211. The negative pressure generated by the extension tube 217 and the fixed tube 219 accurately removes dust, metal debris and other impurities from the contact surface, preventing impurities from being inserted into the wiring interface with the contact. During this process, the second magnetic block 244, under the elastic force of the second spring 245, maintains the relative position of the U-shaped tube 243 and the mounting tube 246, ensuring stable transmission of suction.

[0058] When the relay continues to move until the dust removal component 210 reaches its movement limit and can no longer move synchronously with the relay, the relay contact still moves towards the wiring interface. At this time, the magnetic block fixed on the inner wall of the left side of the cabinet 100 and the magnetic block embedded in the rack 250 are attracted by magnetic force, causing the rack 250 to slide towards the inner wall of the cabinet 100. The rack 250 drives the rotating disk 212 to rotate through the meshing first tooth 213. The second tooth 214 on the rotating disk 212 meshes with the first gear 215, driving the first gear 215 and the first screw 216 to rotate. The first screw 216 drives the threaded frame 218 to slide axially. The threaded frame 218 drives the extension tube 217 to extend from inside the fixed tube 219, dynamically shortening the dust collection distance between the extension tube 217 and the relay contact, ensuring that the suction force always acts on the contact surface, continuously removing impurities, and avoiding poor contact between the contact and the wiring interface due to impurity residue.

[0059] The modular microcomputer protection device built into the cabinet 100 collects the operating parameters of the cabinet 100 in real time. If the contact resistance of the contacts increases or local heating occurs due to impurities during the cleaning process, the protection device can quickly detect and trigger an early warning to remind the operator to check the cleaning effect and ensure the normal operation of the relays afterwards.

[0060] Example 2: As Figure 7 and Figure 8 As shown, while all other parts are the same as in Example 1, the difference between this example and Example 1 is that:

[0061] The adjustment assembly 230 includes a drive frame 231, a connecting box 232, a second screw 233, a second gear 234, a first magnetic plate 235, and a threaded post 236.

[0062] The connecting box 232 is fixedly installed on the extrusion column 226, and the second screw 233 is rotatably installed on the connecting box 232; the threaded column 236 is slidably connected to the connecting box 232, and the threaded column 236 is threadedly connected to the second screw 233, and the first magnetic plate 235 is fixedly installed on it; the second gear 234 is fixedly installed on the second screw 233; the drive frame 231 is slidably installed inside the connecting box 232, and the drive frame 231 meshes with the second gear 234; the fixed plate 247 is fixedly installed on the mounting tube 246; the second magnetic block 244 is fixedly installed on the U-shaped tube 243, and the second magnetic block 244 is connected to the fixed plate 247 through the second spring 245, and a one-way valve is installed inside the U-shaped tube 243. A one-way pipe communicating with the outside is also installed in the middle of the fixed box 221, so that when the relay is removed, the impurities absorbed in the fixed box 221 will be discharged along the one-way pipe.

[0063] The working principle of this embodiment is as follows: Since the connecting box 232 is installed on the extrusion column 226, the relay will cause the connecting box 232 to move the extrusion column 226 during the installation process. Because the first magnetic plate 235 and the second magnetic block 244 are magnetically repelled, the connecting box 232 will move the first magnetic plate 235 along with it. The first magnetic plate 235 pushes the second magnetic block 244 through magnetic repulsion, causing the U-shaped tube 243 and the connecting tube frame 241 to move together. This causes the dust removal assembly 210 to move as well. When the relay contacts enter the... When the relay contacts are connected to the wiring interface, the U-shaped tube 243 will be compressed to its lowest point and will be unable to move. When the relay contacts move further, they will have to overcome the repulsive force between the second magnetic block 244 and the first magnetic plate 235. This will require a greater driving force, and the force provided by the operator will also need to be greater. This will produce a stepped force change indicator, letting the operator know that the relay contacts have entered the wiring interface and are about to complete the wiring. At this time, the movement speed of the relay contacts needs to be controlled to avoid excessive speed and impact, which could damage the relay contacts and the wiring interface, thereby affecting the connection between the two.

[0064] Furthermore, due to manufacturing tolerances or wear and tear, the length of the relay contact may deviate, causing it to not be positioned precisely inside the dust removal assembly 210 after being placed in the handcart compartment. In this case, the drive frame 231 can be driven to rotate the second gear 234. The rotation of the second gear 234 will cause the second screw 233 to rotate, which in turn will cause the threaded post 236 to move. The movement of the threaded post 236 will cause the first magnetic plate 235 to move. The movement of the first magnetic plate 235 will cause the second magnetic block 244 to move the U-shaped tube 243, which will also cause the connecting tube frame 241 to move, thereby changing the position of the dust removal assembly 210 so that it can be positioned at the contact end of the relay contact, continuously cleaning the contact end of the contact.

[0065] 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.

[0066] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A withdrawable high-voltage switchgear with a modular microcomputer protection device, comprising a cabinet (100) for installing relays and a cleaning mechanism (200) installed inside the handcart compartment of the cabinet (100), characterized in that, The cleaning mechanism (200) includes: Multiple dust removal components (210), including a fixed tube (219) with an extension tube (217) internally slidably mounted thereon; The suction assembly (220) is connected to the plurality of dust removal assemblies (210) via a conveying assembly (240), and during the process of installing the relay into the cabinet (100), the suction assembly (220) is squeezed to generate suction at the extension tube (217) to remove impurities from the relay contacts; A rack (250) is used to drive the dust removal assembly (210) to operate, and during the process of the relay being installed inside the cabinet (100), the extension tube (217) is controlled to move inside the fixed tube (219) according to the size of the relay contact, so as to maintain the dust removal distance between the dust removal assembly (210) and the relay contact.

2. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 1, characterized in that, The suction assembly (220) includes: A fixed box (221) is fixedly installed inside the cabinet (100), and two pistons (225) are slidably installed inside it. The extrusion column (226) is slidably mounted on the fixed box (221); The rotating plate (223) has rotating seats (224) mounted on both ends. The two rotating seats (224) are fixedly connected to the piston (225) and the extrusion column (226) respectively.

3. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 2, characterized in that, The suction assembly (220) also includes: The first spring (222) is located inside the fixed box (221), with one end fixedly connected to the fixed box (221) and the other end fixedly connected to the extrusion column (226).

4. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 2, characterized in that, The transmission component (240) includes: The mounting tube (246) is fixedly installed on the top of the fixing box (221), and a U-shaped tube (243) is slidably installed inside it. The connecting pipe support (241) is fixedly installed on the U-shaped pipe (243).

5. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 4, characterized in that, The transmission component (240) further includes: The sliding block (242) is slidably mounted on the connecting pipe rack (241) and fixedly connected to the rack (250).

6. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 4, characterized in that, The dust removal assembly (210) includes: Hollow ring (211) is fixedly installed on the connecting pipe rack (241) and fixedly connected to the fixed pipe (219); The first screw (216) is rotatably mounted on the hollow ring (211), and a threaded bracket (218) is threadedly connected to the extension tube (217).

7. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 6, characterized in that, The dust removal assembly (210) also includes: A rotating disk (212) is rotatably mounted on the hollow ring (211), and a plurality of first locking teeth (213) and second locking teeth (214) are fixedly mounted on it. The first gear (215) is fixedly mounted on the first screw (216).

8. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 2, characterized in that, The cleaning mechanism (200) further includes an adjustment component (230), which includes: A connecting box (232) is fixedly installed on the extrusion column (226), and a second screw (233) is rotatably installed on it. The threaded post (236) is slidably connected to the connecting box (232) and threadedly connected to the second screw (233), and a first magnetic plate (235) is fixedly installed on it.

9. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 8, characterized in that, The adjustment component (230) further includes: The second gear (234) is fixedly mounted on the second screw (233); The drive frame (231) is slidably mounted inside the connecting box (232) and meshes with the second gear (234).

10. A withdrawable high-voltage switchgear with a modular microcomputer protection device according to claim 4, characterized in that, The transmission component (240) further includes: A fixed plate (247) is fixedly installed on the mounting tube (246); The second magnetic block (244) is fixedly installed on the U-shaped tube (243) and connected to the fixed disk (247) by the second spring (245).

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