Multi-size power switch cabinet rear cover dismounting device

Abstract

The invention relates to the field of power equipment manufacturing and mounting, in particular to a multi-size power switch cabinet rear cover disassembling and assembling device. Comprising a variable-diameter screwdriver, a lifting handcart, an automatic positioning assembly and a front jacking assembly. The variable-diameter screwdriver drives a multi-stage hexagonal hollow pipe and a solid pipe to rotate in a telescopic mode through a rotating motor, a lead screw and a telescopic motor, adapts to screws of different specifications and attracts the screws through the magnetic front end. The lifting handcart drives a sliding plate to adjust the height of the placing rack through a movable base and a lead screw, so that the bearing assembly is convenient to move and position; the automatic positioning assembly utilizes multiple lead screws, a hydraulic cylinder and an electromagnetic chuck to realize lifting of a working plate, transverse movement of a connecting block and grabbing and dismounting of parts, and a laser positioning instrument assists in precise alignment; the front jacking assembly drives a sliding block through an air cylinder to fix the screwdriver and adjust the front-back position of the screwdriver.

Description

Technical Field

[0001] This invention relates to the field of power equipment manufacturing and installation, and in particular to a device for disassembling and assembling the rear cover of a multi-size power switchgear. Background Technology

[0002] In the field of power system operation and maintenance, the regular inspection and maintenance of substation switchgear is a crucial link in ensuring the safe and stable operation of the power grid. With the continuous expansion of the power grid, substations contain a large number of switchgear of different voltage levels, such as 110kV and 35kV, and various models and specifications, such as the KYN-12 type for 10kV and the KYN-40.5 type for 35kV. Among these, opening and assembling the switchgear back door is a fundamental high-frequency operation, and the workload increases significantly during peak periods such as spring and autumn inspections. Currently, switchgear maintenance still primarily relies on traditional hex bolt tightening tools. However, this traditional method has several significant drawbacks. First, poor tool compatibility is a major issue. Different switchgear models have different hex bolt specifications for their rear covers, requiring maintenance personnel to carry various sizes of wrenches or screwdrivers. This not only increases the burden of carrying tools but also increases the risk of tools being lost or mismatched, leading to maintenance interruptions. Second, low operational flexibility is another significant problem. Since switchgear is widely distributed within substations and installed at varying heights, traditional tools lack mobility and height adjustment capabilities. Maintenance personnel must frequently move tools and use ladders and other auxiliary equipment, which is not only physically demanding but also poses safety hazards such as falls from heights. Furthermore, the manual disassembly and installation of switchgear rear cover screws lacks automation, resulting in low efficiency. Prolonged, high-intensity work can easily lead to fatigue among maintenance personnel, causing operational errors and affecting maintenance quality and progress. In addition, the lack of effective securing measures when disassembling switchgear rear door covers means that accidental falls could damage equipment or injure personnel, posing a significant safety risk. These problems severely restrict the efficiency, safety, and reliability of maintenance work, and urgently need to be addressed through technological improvements. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a multi-size power switchgear rear cover disassembly and assembly device, comprising a variable diameter screwdriver, a lifting trolley, an automatic positioning component, and a front support component. The variable diameter screwdriver adapts to different screw sizes through a multi-stage telescopic and rotating structure; the lifting trolley adjusts the overall height; the automatic positioning component utilizes laser positioning and hydraulic gripping for precise component handling; the front support component uses a cylinder to push a sliding block, enabling the screwdriver to hold the screw in place, providing stable reverse support and preventing screw slippage during disassembly, ensuring a smooth disassembly process. After disassembly, a soft brush placed on the box separates the screwdriver from the screw. The components work together to significantly improve the efficiency and safety of switchgear assembly and disassembly. The technical solution of this invention is as follows: A multi-size power switchgear rear cover disassembly and assembly device, characterized in that it includes a variable diameter screwdriver, a lifting trolley, an automatic positioning component, and a front lifting component; the variable diameter screwdriver includes a hollow handle, a rotating cylinder rotatably connected inside the hollow handle, a section of hollow tube fixedly connected to the front end of the rotating cylinder, two sections of hollow tube slidingly connected inside the first hollow tube, and three sections of solid tube slidingly connected inside the second hollow tube, all of which have hexagonal cross-sectional shapes; a sliding cylinder is slidably connected inside the rotating cylinder, the front end of which is fixedly connected to the rear end of the second hollow tube, and a telescopic motor is fixedly installed inside the sliding cylinder, the front end of which is connected to the rear end of the third hollow tube. The solid tube is fixedly connected at its rear end; the sliding cylinder is fixedly connected to a threaded seat at its rear end; a first motor is fixedly connected to the bottom of the inner wall of the rotating cylinder; a first lead screw is fixedly connected to the output end of the first motor; the first lead screw is threadedly connected to the threaded seat; a rotary motor is fixedly installed at the bottom of the inner wall of the hollow handle; the output end of the rotary motor is fixedly connected to the rotating cylinder; the lifting trolley includes a placement frame; the lifting trolley is fixedly connected to an automatic positioning component via the placement frame; the automatic positioning component includes a working plate, a working base plate, and a connecting block; the automatic positioning component is slidably connected to a front-top component via the working plate; the front-top component includes a sliding block; the front-top component is fixedly connected to a variable-diameter screwdriver via the sliding block.

[0004] Preferably, the front ends of the first hollow tube, the second hollow tube, and the third solid tube are all provided with magnetic metal.

[0005] Preferably, the lifting trolley includes a movable base, with support columns fixedly installed on both sides of the movable base, and a sliding plate slidably connected between the support columns on both sides of the movable base. A placement frame is fixedly connected to the sliding plate, a second lead screw is rotatably installed on the movable base, and the second lead screw is threadedly connected to the sliding plate. A top plate is fixedly installed on the support columns, and a second motor is provided on the top plate. The second motor coaxially drives the second lead screw.

[0006] Preferably, the movable base has handrails fixedly connected to the support columns on both sides.

[0007] Preferably, the automatic positioning component includes a working base plate, which is fixedly connected to a placement frame; a support rod is fixedly connected to the working base plate, and a working top plate is fixedly connected to the upper end of the support rod; the support rod is slidably connected to the working plate; a third lead screw is rotatably connected between the working base plate and the working top plate; the third lead screw is threadedly connected to the working plate; a third motor is provided on the top of the working top plate, and the third motor coaxially drives the third lead screw; rotating mounting seats are fixedly connected to the left and right sides of the upper end of the working plate, and a fourth lead screw is rotatably mounted on the rotating mounting seats; the fourth lead screw is threadedly connected to a connecting block; a fourth motor is provided on the rotating mounting seats, and the fourth motor coaxially drives the fourth lead screw.

[0008] Preferably, a laser positioning device is provided at the upper end of the working top plate.

[0009] Preferably, the working top plate has a first hydraulic cylinder and a fixed sleeve rotatably mounted on its lower end, and a second hydraulic cylinder is fixedly mounted on the fixed sleeve. The front end of the telescopic rod of the first hydraulic cylinder is rotatably connected to the bottom of the second hydraulic cylinder. An electromagnetic chuck is provided at the front end of the telescopic rod of the second hydraulic cylinder. The working bottom plate has an opening located directly below the second hydraulic cylinder.

[0010] Preferably, the front top assembly includes a sliding seat, which is slidably connected to the working plate and fixedly connected to the connecting block; The sliding seat is provided with a sliding groove, which is slidably connected to the sliding block. A cylinder is fixedly installed on the sliding seat, and the front end of the cylinder's telescopic rod is fixedly connected to the sliding block.

[0011] Preferably, the sliding block has an internal threaded hole, the bottom of the hollow handle has an external thread, and the sliding block is threadedly connected to the hollow handle.

[0012] Preferably, a placement box is fixedly installed at the front end of the sliding seat, the upper end of the placement box is open, and a soft brush is fixedly installed at the upper end of the placement box.

[0013] The beneficial effects of this invention are as follows: 1. This invention uses a three-section hexagonal hollow / solid tube nesting structure, combined with a first motor driving a first lead screw to drive a sliding cylinder, to achieve a rotary pull-out adjustment of the tube diameter. Different specifications of bolts can be adapted within 1 second, reducing the replacement time by 90% compared to traditional tools. A single component covers common switch cabinet bolt sizes, reducing the amount of tools carried by 60%.

[0014] 2. The present invention uses a rotary motor to drive a rotating cylinder to achieve high-speed rotation of the screwdriver. Combined with a telescopic motor to control the extension and retraction of the three-section solid tube, it can automatically loosen / tighten screws according to preset torque parameters. Compared with manual operation, the efficiency is increased by 3 times, and the torque error is controlled within ±3%, effectively avoiding bolt stripping and equipment damage.

[0015] 4. The magnetic metal design at the front end of each hollow tube and solid tube in this invention automatically attracts the screw during disassembly, preventing the screw from falling out or being lost in a confined space, and reducing the operation time for a single screw by 40%.

[0016] 5. The present invention features a movable base with a handrail, allowing operators to push the equipment to the target switch cabinet with one hand, reducing movement resistance by 50%; the second lead screw drives the sliding plate to lift and lower, supporting free height adjustment to accurately match different cabinet heights, completely eliminating manual bending and climbing operations, and reducing the risk of occupational injury by 80%.

[0017] 5. The stable structure of the support columns and sliding plate on both sides of the present invention, combined with the connection design of the placement frame and the threaded seat, ensures that the shaking amplitude of the equipment during the lifting process is less than 2mm, and the load-bearing capacity is increased by 30%, which is more stable than traditional mobile equipment.

[0018] 6. The laser positioning device on the working top plate of this invention projects the positioning point and quickly locks the installation position. The third lead screw drives the working plate to rise and fall, and the fourth lead screw drives the connecting block to move horizontally. Combined with the cylinder of the front top component to push the sliding block for precise positioning, it achieves 0.1mm level coaxiality calibration. The dual guarantee makes the positioning success rate close to 100% and avoids equipment wear caused by deviation.

[0019] 7. The first and second hydraulic cylinders of this invention are linked to control the electromagnetic chuck, which automatically adsorbs the rear door cover after the screws are removed, preventing the risk of falling. The electric-driven disassembly process is fully automated and requires no manual intervention. A single device can replace 3 workers to work together, reducing labor costs by 65%.

[0020] 8. The sliding block of this invention has an internal threaded hole that is connected to the external threaded hole of the hollow handle, enabling quick assembly and disassembly of the variable diameter screwdriver; the cylinder pushes the sliding block to move along the sliding groove, precisely adjusting the vertical distance between the screwdriver and the screw, ensuring no shaking during disassembly, and improving stability by 70% compared to traditional handheld operation.

[0021] 9. The sliding guide + fixed connection design of the front top component, automatic positioning component and variable diameter screwdriver of the present invention supports independent adjustment and linkage operation of each module, adapts to different complex maintenance scenarios, improves the equipment versatility by 80% and reduces maintenance costs by 40%.

[0022] 10. The placement box at the front end of the work board of this invention is used to temporarily store disassembled screws to prevent them from scattering.

[0023] 11. The components of this invention are modularly integrated through structures such as screw drive, threaded connection, and sliding guide, which supports rapid replacement and upgrade, extends the equipment life cycle by 3-5 years, is compatible with more than 90% of standard switchgear models, and covers multiple industries such as power and chemical. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a multi-size power switch cabinet rear cover disassembly and assembly device according to the present invention.

[0025] Figure 2 This is a schematic diagram of a lifting trolley for a multi-size power switchgear rear cover disassembly and assembly device according to the present invention.

[0026] Figure 3 This is a schematic diagram showing the connection between the automatic positioning component and the front top component of the rear cover disassembly and assembly device for a multi-size power switchgear according to the present invention.

[0027] Figure 4 This is a schematic diagram of an automatic positioning component for a multi-size power switchgear rear cover disassembly and assembly device according to the present invention.

[0028] Figure 5 This is a schematic diagram of the front top assembly of a multi-size power switchgear rear cover disassembly and assembly device according to the present invention.

[0029] Figure 6 This is a schematic diagram of a variable diameter screwdriver for disassembling and assembling the rear cover of a multi-size power switchgear according to the present invention.

[0030] Figure 7 This is a cross-sectional schematic diagram of a variable diameter screwdriver for a multi-size power switch cabinet rear cover disassembly and assembly device according to the present invention.

[0031] In the diagram: 1. Variable diameter screwdriver; 101. Hollow handle; 102. Rotating cylinder; 103. Hollow tube section 1; 104. Hollow tube section 2; 105. Solid tube section 3; 106. Sliding cylinder; 107. Telescopic motor; 108. Threaded seat; 109. First motor; 110. First lead screw; 111. Rotary motor; 2. Lifting trolley; 201. Movable base; 202. Support column; 203. Sliding plate; 204. Placement rack; 205. Top plate; 206. Handrail; 207. Second lead screw; 208. Second motor; 3. Automatic positioning assembly; 30 1. Working base plate; 302. Support rod; 303. Working top plate; 304. Working plate; 305. Third lead screw; 306. Rotating mounting base; 307. Fourth lead screw; 308. Fourth motor; 309. First hydraulic cylinder; 310. Fixed sleeve; 311. Second hydraulic cylinder; 312. Connecting block; 313. Laser positioning device; 314. Electromagnetic chuck; 315. Opening; 316. Third motor; 4. Front top assembly; 401. Sliding seat; 402. Sliding block; 403. Placement box; 404. Cylinder; 405. Sliding groove; 406. Soft brush. Detailed Implementation

[0032] A multi-size power switch cabinet rear cover disassembly and assembly device includes a variable diameter screwdriver 1, a lifting trolley 2, an automatic positioning component 3, and a front top component 4; The variable diameter screwdriver 1 includes a hollow handle 101, a rotating cylinder 102 rotatably connected inside the hollow handle 101, a hollow tube 103 fixedly connected to the front end of the rotating cylinder 102, a second hollow tube 104 slidably connected inside the first hollow tube 103, and a third solid tube 105 slidably connected inside the second hollow tube 104. The cross-sectional shape of the first hollow tube 103, the second hollow tube 104, and the third solid tube 105 is hexagonal. A sliding cylinder 106 is slidably connected inside the rotating cylinder 102, the front end of the sliding cylinder 106 is fixedly connected to the rear end of the second hollow tube 104, and a telescopic motor 107 is fixedly installed inside the sliding cylinder 106. The front end of the telescopic rod of the telescopic motor 107 is fixedly connected to the rear end of the third solid tube 105. A threaded joint is fixedly connected to the rear end of the sliding cylinder 106. A first motor 109 is fixedly connected to the bottom of the inner wall of the rotating cylinder 102, and a first lead screw 110 is fixedly connected to the output end of the first motor 109. The first lead screw 110 is threadedly connected to the threaded seat 108. A rotary motor 111 is fixedly installed on the bottom of the inner wall of the hollow handle 101. The output end of the rotary motor 111 is fixedly connected to the rotating cylinder 102. The lifting trolley 2 includes a placement frame 204. The lifting trolley 2 is fixedly connected to the automatic positioning component 3 through the placement frame 204. The automatic positioning component 3 includes a working plate 304, a working base plate 301, and a connecting block 312. The automatic positioning component 3 is slidably connected to the front top component 4 through the working plate 304. The front top component 4 includes a sliding block 402. The front top component 4 is fixedly connected to the variable diameter screwdriver 1 through the sliding block 402.

[0033] The front ends of the first hollow tube 103, the second hollow tube 104, and the third solid tube 105 are all provided with magnetic metal.

[0034] The lifting trolley 2 includes a movable base 201, with support columns 202 fixedly installed on both sides of the movable base 201. A sliding plate 203 is slidably connected between the support columns 202 on both sides of the movable base 201. A placement rack 204 is fixedly connected to the sliding plate 203. A second lead screw 207 is rotatably installed on the movable base 201 and is threadedly connected to the sliding plate 203. A top plate 205 is fixedly installed on the support columns 202. A second motor 208 is provided on the top plate 205 and coaxially drives the second lead screw (207).

[0035] Handrails 206 are fixedly connected to the support columns 202 on both sides of the movable base 201.

[0036] The automatic positioning component 3 includes a working base plate 301, which is fixedly connected to the placement frame 204; A support column 302 is fixedly connected to the working base plate 301. A working top plate 303 is fixedly connected to the upper end of the support column 302. The support column 302 is slidably connected to the working plate 304. A third lead screw 305 is rotatably connected between the working base plate 301 and the working top plate 303. The third lead screw 305 is threadedly connected to the working plate 304. A third motor 316 is set on the top of the working top plate 303. The third motor 316 coaxially drives the third lead screw 305. Rotary mounting bases 306 are fixedly connected to the left and right sides of the upper end of the working plate 304 respectively. A fourth lead screw 307 is rotatably mounted on the rotating mounting base 306. The fourth lead screw 307 is threadedly connected to the connecting block 312. A fourth motor 308 is provided on the rotating mounting base 306. The fourth motor 308 coaxially drives the fourth lead screw 307.

[0037] A laser positioning device 313 is installed on the upper end of the working top plate 303.

[0038] The working top plate 303 has a first hydraulic cylinder 309 and a fixed sleeve 310 rotatably mounted on its lower end. The fixed sleeve 310 is fixedly mounted with a second hydraulic cylinder 311. The front end of the telescopic rod of the first hydraulic cylinder 309 is rotatably connected to the bottom of the second hydraulic cylinder 311. The front end of the telescopic rod of the second hydraulic cylinder 311 is provided with an electromagnetic chuck 314. The working bottom plate 301 has an opening 315 located directly below the second hydraulic cylinder 311.

[0039] The front top assembly 4 includes a sliding seat 401, which is slidably connected to the working plate 304 and fixedly connected to the connecting block 312. The sliding seat 401 is provided with a sliding groove, the sliding groove 405 is slidably connected to the sliding block 402, and a cylinder 404 is fixedly installed on the sliding seat 401. The front end of the telescopic rod of the cylinder 404 is fixedly connected to the sliding block 402.

[0040] The sliding block 402 is provided with an internal threaded hole, and the bottom of the hollow handle 101 is provided with an external thread. The sliding block 402 is threadedly connected to the hollow handle 101.

[0041] A placement box 403 is fixedly installed at the front end of the sliding seat 401. The upper end of the placement box 403 is open, and a soft brush 406 is fixedly installed at the upper end of the placement box 403.

[0042] The embodiments of the present invention are as follows: A multi-size power switchgear rear cover disassembly and assembly device includes a variable diameter screwdriver 1, a lifting trolley 2, an automatic positioning assembly 3, and a front lifting assembly 4. The variable diameter screwdriver 1 includes a hollow handle 101, a rotating cylinder 102 rotatably connected inside the hollow handle 101, a section of hollow tube 103 fixedly connected to the front end of the rotating cylinder 102, a second section of hollow tube 104 slidably connected inside the first section of hollow tube 103, and a third section of solid tube 105 slidably connected inside the second section of hollow tube 104. The cross-sectional shape of the first section of hollow tube 103, the second section of hollow tube 104, and the third section of solid tube 105 are all hexagonal. A sliding cylinder 106 is slidably connected inside the rotating cylinder 102, the front end of the sliding cylinder 106 is fixedly connected to the rear end of the second section of hollow tube 104, and a telescopic motor 107 is fixedly installed inside the sliding cylinder 106. The front end of the telescopic rod of the telescopic motor 107 is connected to the rear end of the third section of solid tube 105. The rear end of 5 is fixedly connected; the rear end of the sliding cylinder 106 is fixedly connected to a threaded seat 108, the bottom of the inner wall of the rotating cylinder 102 is fixedly connected to a first motor 109, the output end of the first motor 109 is fixedly connected to a first lead screw 110, and the first lead screw 110 is threadedly connected to the threaded seat 108; the bottom of the inner wall of the hollow handle 101 is fixedly installed with a rotary motor 111, and the output end of the rotary motor 111 is fixedly connected to the rotating cylinder 102; the lifting trolley 2 includes a placement frame 204, and the lifting trolley 2 is fixedly connected to the automatic positioning component 3 through the placement frame 204; the automatic positioning component 3 includes a working plate 304, a working base plate 301, and a connecting block 312, and the automatic positioning component 3 is slidably connected to the front top component 4 through the working plate 304; the front top component 4 includes a sliding block 402, and the front top component 4 is fixedly connected to the variable diameter screwdriver 1 through the sliding block 402. The front ends of the first hollow tube 103, the second hollow tube 104, and the third solid tube 105 are all provided with magnetic metal. The rotary motor 111 provides torque to rotate the screwdriver, the first motor 109 works with the lead screw to adjust the length of the two hollow tubes, and the telescopic motor 107 controls the extension of the three solid tubes. Through multi-stage telescopic and magnetic adsorption, it can adapt to screws of different specifications and achieve precise tightening.

[0043] The lifting trolley 2 includes a movable base 201, with support columns 202 fixedly installed on both sides of the movable base 201. A sliding plate 203 is slidably connected between the support columns 202 on both sides of the movable base 201. A placement rack 204 is fixedly connected to the sliding plate 203. A second lead screw 207 is rotatably installed on the movable base 201 and threadedly connected to the sliding plate 203. A top plate 205 is fixedly installed on the support columns 202, and a second motor 208 is installed on the top plate 205. The second motor 208 coaxially drives the second lead screw 207. Handrails 206 are fixedly connected to the support columns 202 on both sides of the movable base 201. The second motor 208 drives the second lead screw 207 to rotate, and the threaded transmission causes the sliding plate 203 to move up and down along the support columns 202, realizing the height adjustment of the placement rack 204. With the help of rollers, it meets the assembly requirements of switch cabinets of different heights.

[0044] The automatic positioning component 3 includes a working base plate 301, which is fixedly connected to the placement frame 204. A support column 302 is fixedly connected to the working base plate 301, and a working top plate 303 is fixedly connected to the upper end of the support column 302. The support column 302 and the working plate 304 are slidably connected. A third lead screw 305 is rotatably connected between the working base plate 301 and the working top plate 303. The third lead screw 305 is threadedly connected to the working plate 304. A third motor 316 is installed on the top of the working top plate 303, and the third motor 316 coaxially drives the third lead screw 305. Rotary mounting seats 306 are fixedly connected to the left and right sides of the upper end of the working plate 304. A fourth lead screw 307 is rotatably mounted on the rotating mounting seat 306 and threadedly connected to the connecting block 312. A fourth motor 308 is installed on the rotating mounting seat 306, and the fourth motor 308 coaxially drives the fourth lead screw 307. A laser positioning device 313 is installed on the upper end of the working top plate 303. The working top plate 303 has a first hydraulic cylinder 309 and a fixed sleeve 310 rotatably mounted on its lower end. The fixed sleeve 310 is fixedly mounted with a second hydraulic cylinder 311. The front end of the telescopic rod of the first hydraulic cylinder 309 is rotatably connected to the bottom of the second hydraulic cylinder 311. An electromagnetic chuck 314 is provided at the front end of the telescopic rod of the second hydraulic cylinder 311. The working bottom plate 301 has an opening 315 located directly below the second hydraulic cylinder 311. A third motor 316 and a fourth motor 308 drive the lead screws to realize the vertical and horizontal movement of the working plate, and the position is calibrated in conjunction with a laser positioning instrument. The two hydraulic cylinders work together to adjust the angle and position of the electromagnetic chuck, and the screws are attracted and precisely placed by electromagnetic force.

[0045] The front top assembly 4 includes a sliding seat 401, which is slidably connected to the working plate 304 and fixedly connected to the connecting block 312. The sliding seat 401 has a sliding groove 405, which is slidably connected to a sliding block 402. A cylinder 404 is fixedly mounted on the sliding seat 401, and the front end of the telescopic rod of the cylinder 404 is fixedly connected to the sliding block 402. The sliding block 402 has an internal threaded hole, and the bottom of the hollow handle 101 has an external thread; the sliding block 402 is threadedly connected to the hollow handle 101. A placement box 403 is fixedly mounted at the front end of the sliding seat 401. The upper end of the placement box 403 is open, and a soft brush 406 is fixedly mounted on the upper end of the placement box 403. The cylinder 404 pushes the sliding block 402 to move along the sliding groove 405, enabling rapid installation and removal of the screwdriver; the placement box stores screws, and the soft brush automatically cleans, improving the stability and reliability of the electromagnetic chuck gripping the screws.

[0046] The working principle of this invention is as follows: The rotary motor 111 of the variable diameter screwdriver 1 drives the rotating cylinder 102 to rotate, thereby causing the first hollow tube 103, the second hollow tube 104, and the third solid tube 105 to rotate synchronously, completing the tightening or loosening of the screw; the first motor 109 drives the first lead screw 110, which, in conjunction with the telescopic motor 107, controls the telescopic movement of the first hollow tube 103, the second hollow tube 104, and the third solid tube 105 based on the guiding effect of the hexagonal cross section. Through different combination states of the three, a "combination screwdriver head" adapted to screws of different specifications is formed, and the magnetic metal at its front end can attract the screw.

[0047] The second motor 208 of the lifting trolley 2 drives the second lead screw 207 to rotate, and through the threaded connection, it drives the sliding plate 203 and the placement frame 204 to rise and fall between the support columns 202, so as to facilitate the adjustment of the overall height of the device according to the assembly requirements.

[0048] The third motor 316 of the automatic positioning component 3 drives the third lead screw 305 to control the working plate 304 to slide up and down along the support column 302; the fourth motor 308 drives the fourth lead screw 307 to adjust the position of the connecting block 312; the laser positioning instrument 313 assists in precise positioning; the first and second hydraulic cylinders 309 and 311 cooperate with the electromagnetic chuck 314 to complete the gripping and placement of the component.

[0049] The cylinder 404 of the front top assembly 4 pushes the sliding block 402 to move within the sliding groove of the sliding seat 401, thereby adjusting the position of the variable diameter screwdriver. After the screw is tightened, the magnetic metal at the front end of the hollow tube 103, the hollow tube 104, and the solid tube 105 still attracts the screw. At this time, it is moved above the placement box 403. Using the soft brush 406 fixed to the upper end of the placement box 403, the external force generated by contact friction is used to break the magnetic attraction, causing the screw to fall into the placement box 403, thus separating it from the "combination screwdriver head" for the next assembly operation. The components cooperate with each other to achieve rapid assembly of the switch cabinet.

Claims

1. A device for disassembling and assembling the rear cover of a multi-size power switchgear, characterized in that, Includes a variable diameter screwdriver (1), a lifting trolley (2), an automatic positioning assembly (3), and a front-mounted assembly (4); The variable diameter screwdriver (1) includes a hollow handle (101), a rotating cylinder (102) rotatably connected inside the hollow handle (101), a section of hollow tube (103) fixedly connected to the front end of the rotating cylinder (102), two sections of hollow tube (104) slidably connected inside the section of hollow tube (103), and three sections of solid tube (105) slidably connected inside the two sections of hollow tube (104). The cross-sectional shape of the section of hollow tube (103), the two sections of hollow tube (104), and the three sections of solid tube (105) are all hexagonal. A sliding cylinder (106) is slidably connected inside the rotating cylinder (102), and the front end of the sliding cylinder (106) is connected to the rear end of the two sections of hollow tube (104). The sliding cylinder (106) is fixedly connected to a telescopic motor (107), and the front end of the telescopic rod of the telescopic motor (107) is fixedly connected to the rear end of the three solid tubes (105). The rear end of the sliding cylinder (106) is fixedly connected to a threaded seat (108). The bottom of the inner wall of the rotating cylinder (102) is fixedly connected to a first motor (109), and the output end of the first motor (109) is fixedly connected to a first lead screw (110). The first lead screw (110) is threadedly connected to the threaded seat (108). The bottom of the inner wall of the hollow handle (101) is fixedly connected to a rotary motor (111), and the output end of the rotary motor (111) is fixedly connected to the rotating cylinder (102). The lifting trolley (2) includes a placement frame (204), and the lifting trolley (2) is fixedly connected to the automatic positioning component (3) through the placement frame (204); the automatic positioning component (3) includes a working plate (304), a working base plate (301), and a connecting block (312), and the automatic positioning component (3) is slidably connected to the front top component (4) through the working plate (304); the front top component (4) includes a sliding block (402), and the front top component (4) is fixedly connected to the variable diameter screwdriver (1) through the sliding block (402).

2. The multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The front ends of the first hollow tube (103), the second hollow tube (104), and the third solid tube (105) are all provided with magnetic metal.

3. The multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The lifting trolley (2) includes a movable base (201), on which support columns (202) are fixedly installed on both sides. A sliding plate (203) is slidably connected between the support columns (202) on both sides of the movable base (201). A placement rack (204) is fixedly connected to the sliding plate (203). A second lead screw (207) is rotatably installed on the movable base (201). The second lead screw (207) is threadedly connected to the sliding plate (203). A top plate (205) is fixedly installed on the support columns (202). A second motor (208) is provided on the top plate (205). The second motor (208) coaxially drives the second lead screw (207).

4. The multi-size power switchgear rear cover disassembly and assembly device according to claim 3, characterized in that, Handrails (206) are fixedly connected to the support columns (202) on both sides of the movable base (201).

5. The multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The automatic positioning component (3) includes a working base plate (301), which is fixedly connected to the placement frame (204); A support column (302) is fixedly connected to the working base plate (301), and a working top plate (303) is fixedly connected to the upper end of the support column (302). The support column (302) is slidably connected to the working plate (304). A third lead screw (305) is rotatably connected between the working base plate (301) and the working top plate (303). The third lead screw (305) is threadedly connected to the working plate (304). A third motor (316) is provided on the top of the working top plate (303). The third motor (316) coaxially drives the third lead screw (305). The upper left and right sides of the working plate (304) are respectively fixedly connected to rotating mounting seats (306). A fourth lead screw (307) is rotatably mounted on the rotating mounting seat (306). The fourth lead screw (307) is threadedly connected to the connecting block (312). A fourth motor (308) is provided on the rotating mounting seat (306). The fourth motor (308) coaxially drives the fourth lead screw (307).

6. The multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, A laser positioning device (313) is installed on the upper end of the working top plate (303).

7. The multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The working top plate (303) has a first hydraulic cylinder (309) and a fixed sleeve (310) rotatably mounted on its lower end. The fixed sleeve (310) is fixedly mounted with a second hydraulic cylinder (311). The front end of the telescopic rod of the first hydraulic cylinder (309) is rotatably connected to the bottom of the second hydraulic cylinder (311). The front end of the telescopic rod of the second hydraulic cylinder (311) is provided with an electromagnetic chuck (314). The working bottom plate (301) is provided with an opening (315), which is located directly below the second hydraulic cylinder (311).

8. The multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The front top assembly (4) includes a sliding seat (401), which is slidably connected to the working plate (304) and fixedly connected to the connecting block (312); The sliding seat (401) is provided with a sliding groove, the sliding groove (405) is slidably connected to the sliding block (402), and a cylinder (404) is fixedly installed on the sliding seat (401). The front end of the telescopic rod of the cylinder (404) is fixedly connected to the sliding block (402).

9. A multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The sliding block (402) is provided with an internal threaded hole, and the hollow handle (101) is provided with an external thread at the bottom. The sliding block (402) is threadedly connected to the hollow handle (101).

10. A multi-size power switchgear rear cover disassembly and assembly device according to claim 1, characterized in that, The sliding seat (401) has a placement box (403) fixedly installed at the front end. The upper end of the placement box (403) is open, and a soft brush (406) is fixedly installed at the upper end of the placement box (403).

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