Drop-out fuse moving contact assembling device and method

Abstract

The invention relates to the technical field of drop-out fuse installation, in particular to a drop-out fuse moving contact assembling device and assembling method.The drop-out fuse moving contact assembling device comprises an equipment frame and a moving contact assembling mechanism, and the equipment frame comprises a base, a workbench fixedly installed on the upper surface of the base and a stand column fixedly installed on the upper surface of the base. According to the drop-out fuse moving contact assembling device and method, the drop-out fuse can be preliminarily positioned through the positioning part, then the driving part can drive the positioning groove of the sleeve on the moving contact assembling mechanism to make contact with the moving contact on the drop-out fuse, and the compression spring is driven to be compressed; proper assembling pressure is provided, then the first motor is driven to rotate to drive the moving contact and the shackle fixing piece to be in threaded connection, the magnetic coupling is automatically disengaged when the preset torque is reached, on one hand, the assembling efficiency is improved, and on the other hand, the situation that connection between the moving contact and the shackle fixing piece is not firm enough or over-screwing is prevented can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drop-out fuse installation, in particular to a drop-out fuse movable contact assembling device and method. BACKGROUND

[0002] The drop-out fuse includes a fuse tube, a separation device at the bottom of the fuse tube, a hook ring fixing part at the top of the fuse tube and a movable contact fixed with the hook ring fixing part, and a fuse inside the fuse tube. When assembling the drop-out fuse, the fuse is first installed in the fuse tube, and then the movable contact is screwed or pressed onto the hook ring fixing part, and then the hanging stress bracket and the hanging stopper in the separation device are riveted and fixed to the ear seat by using a pin. The movable contact is a copper cap, similar to a hexagonal nut structure, and is connected with the hook ring fixing part by screwing or riveting. At present, when the movable contact is installed on the hook ring fixing part, it is usually screwed manually, which may cause the connection between the movable contact and the hook ring fixing part to be not firm enough, and may be loose and low in efficiency.

[0003] Therefore, the present application provides a drop-out fuse movable contact assembling device and method. SUMMARY

[0004] The present application aims to solve at least one technical problem in the background art.

[0005] The present application provides a drop-out fuse movable contact assembling device, which comprises a device frame and a movable contact assembling mechanism. The device frame comprises a base, a workbench fixedly installed on the upper surface of the base, and a stand fixedly installed on the upper surface of the base, and the upper surface of the workbench is provided with a positioning part, and the positioning part is provided with a drop-out fuse. The drop-out fuse comprises a fuse tube, a separation device at the bottom of the fuse tube, a hook ring fixing part at the top of the fuse tube, and a movable contact threadedly connected with the hook ring fixing part. The positioning part comprises a positioning plate, and a positioning pin fixedly installed on the upper surface of the positioning plate. A plurality of T-shaped slots are equidistantly formed on the upper surface of the workbench, and the inner wall of each T-shaped slot is provided with a T-shaped nut block. Four bolt holes are formed in a rectangular array on the upper surface of the positioning plate. The positioning plate and the workbench are assembled into an integrated whole through the cooperation of the T-shaped nut blocks and the bolts, and the outer diameter of the positioning pin is matched with the inner diameter of the fuse tube.

[0006] Through the above technical solution, the four T-shaped nut blocks are slid into the T-shaped slots, and then the positioning plate is placed on the workbench. Then the T-shaped nut blocks are moved to the positions corresponding to the bolt holes on the positioning plate, and then the bolts are passed through the bolt holes and screwed into the T-shaped nut blocks, so that the positioning plate is fixedly installed on the workbench. Then the bottom of the fuse tube is inserted into the positioning pin, so that the drop-out fuse is preliminarily positioned on the positioning part.

[0007] Preferably, the moving contact assembly mechanism comprises a rail groove opened on the front surface of the column, an L-shaped mounting plate slidingly fitted on the front surface of the column, two guide columns symmetrically fixedly installed on the inner top wall of the L-shaped mounting plate, and a rotating component slidingly fitted on the surface of the guide column, and the inside of the column is provided with a driving component for driving the L-shaped mounting plate to move, and the inside of the base is provided with a clamping component for clamping the drop-out fuse.

[0008] Preferably, the rotating component comprises a sliding plate slidingly fitted on the surface of the guide column, a sleeve rotatably installed on the lower surface of the sliding plate, and a first motor fixedly installed on the upper surface of the sliding plate, and the shaft end of the first motor is fixedly connected with the upper end of the sleeve through a magnetic coupling, and the inner wall of the sleeve is provided with a positioning groove matched with the moving contact.

[0009] By adopting the above technical scheme, the L-shaped mounting plate can be lowered by the driving component, so that the moving contact can enter the positioning groove, and then the sleeve can be driven to rotate by driving the first motor to rotate, and the moving contact can be threadedly connected with the hook ring fixing component after the sleeve is rotated.

[0010] Preferably, the surface of the guide column is sleeved with a compression spring, the two ends of the compression spring are respectively abutted against the inner top wall of the L-shaped mounting plate and the upper surface of the sliding plate, and the lower end of the guide column is fixedly installed with a limiting baffle.

[0011] By adopting the above technical scheme, when the sleeve is lowered and the moving contact enters the positioning groove by the driving of the driving component, the driving component continues to drive the sleeve to descend, and the compression spring can be compressed after the sleeve is stressed, so as to provide appropriate assembly pressure, and the limiting baffle is used to limit the sliding plate.

[0012] Preferably, the driving component comprises an installation groove opened in the inside of the column, a first ball screw rotatably installed on the inner wall of the installation groove, a first nut seat screwingly connected with the first ball screw, and a second motor fixedly installed on the inner wall of the installation groove for driving the first ball screw to rotate.

[0013] Preferably, the first nut seat is slidingly fitted with the rail groove, and one end of the first nut seat passes through the rail groove and is fixedly connected with the back surface of the L-shaped mounting plate.

[0014] By adopting the above technical scheme, the first ball screw can be driven to rotate by driving the second motor to rotate, and the first nut seat can be driven to slide along the inner wall of the rail groove by screwing transmission between the first ball screw and the first nut seat, so that the L-shaped mounting plate can be synchronously moved with the first nut seat.

[0015] Preferably, the clamping component comprises a guide groove opened in the front surface of the vertical column, two arc-shaped clamping plates slidingly fitted on the inner wall of the guide groove, a cavity opened in the inner portion of the base, a two-way ball screw rotatingly installed on the inner wall of the cavity, two second nut seats screw-connected with the two-way ball screw, and a worm wheel fixedly installed on the middle portion of the two-way ball screw.

[0016] Preferably, the mounting groove and the cavity are in communication with each other, the lower end of the first ball screw is fixedly installed with a worm, the lower end of the worm is rotatingly connected with the inner bottom wall of the cavity, the worm wheel is in meshing transmission with the worm, one end of each of the two second nut seats is fixedly connected with one end of the two arc-shaped clamping plates, and the inner annular surface of the arc-shaped clamping plate is matched with the outer diameter of the fuse tube.

[0017] Preferably, the lower surface of the sliding plate is fixedly installed with two abutment plates in a symmetrical manner, the surface of the abutment plate is opened with a through hole, the inner wall of the through hole is slidingly fitted with a guide rod, one end of the guide rod is fixedly installed with a clamping block, the surface of the guide rod is sleeved with a return spring for driving the two clamping blocks to be in contact, and the lower end of the clamping block is wedge-shaped.

[0018] By adopting the above technical scheme, when the first ball screw is rotated, the worm can be driven to rotate, the two-way ball screw can be driven to rotate by the meshing transmission between the worm wheel and the worm, the arc-shaped clamping plates can be driven to synchronously clamp the fuse tube from both sides by the screw transmission between the two-way ball screw and the two second nut seats, and when the L-shaped mounting plate moves downward along the track groove, the abutment plates can be synchronously lowered, so that the clamping blocks can be driven to contact the protruding portion of the hook ring fixing member, and then the protruding portion can be clamped by the return spring.

[0019] A method for assembling a moving contact of a drop-out fuse, comprising the following steps: Step 1: a positioning plate is fixedly installed on a T-shaped groove of a workbench through a T-shaped nut block and a bolt, then a fuse tube is inserted into a positioning pin, and a drop-out fuse is preliminarily positioned on a positioning component. Step 2: The movable contact is pre-installed on the thread of the hook fixing member, the second motor in the driving component is started, the first ball screw is rotated, the first ball screw is driven to rotate synchronously through the meshing transmission of the worm and the worm gear, the two second nut seats move towards each other along the bidirectional ball screw, the two arc-shaped clamping plates are closed, the arc-shaped clamping plates clamp the fuse tube from both sides, ensuring the stability during assembly, at the same time, the L-shaped mounting plate moves downward along the track groove to make the guide column and the rotating part move downward synchronously, at this time the sleeve is aligned with the movable contact, the movable contact is driven into the positioning groove in the sleeve, then the L-shaped mounting plate continues to descend until the arc-shaped clamping plates clamp the fuse tube from both sides, at this time the compression spring has appropriate compression force, providing appropriate assembly pressure, then the first motor is started, the sleeve is rotated through the magnetic coupling, the sleeve drives the movable contact to be threadedly connected with the hook fixing member, the magnetic coupling is automatically disconnected when the preset torque is reached, preventing overtightening, and when the L-shaped mounting plate moves downward along the track groove, the abutment plate is driven to descend synchronously, so that the clamping block can contact the protruding part of the hook fixing member, then the protruding part is clamped by the reset spring. ‌Step 3: After the assembly is completed, the first motor stops running, the driving component works in reverse to lift the L-shaped mounting plate, and the clamping component releases the fuse tube, then the assembled drop-out fuse is taken out for inspection.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. The drop-out fuse movable contact assembly device and assembly method disclosed by the present application can preliminarily position the drop-out fuse through the positioning component, then drive the positioning groove of the sleeve on the movable contact assembly mechanism to contact the movable contact on the drop-out fuse, and drive the compression spring to compress, providing appropriate assembly pressure, then driving the first motor to rotate can drive the movable contact to be threadedly connected with the hook fixing member, the magnetic coupling is automatically disconnected when the preset torque is reached, on the one hand, the efficiency of the assembly is improved, and on the other hand, the connection between the movable contact and the hook fixing member is not firm or overtightening is prevented.

[0021] 2. The drop-out fuse movable contact assembly device and assembly method disclosed by the present application, through the clamping component, when the first ball screw is rotated by the rotation of the second motor on the driving component, the first ball screw drives the bidirectional ball screw to rotate synchronously through the meshing transmission of the worm and the worm gear, the two second nut seats move towards each other along the bidirectional ball screw, the two arc-shaped clamping plates are closed, the arc-shaped clamping plates clamp the fuse tube from both sides, ensuring the stability during assembly, avoiding the rotation of the drop-out fuse.

[0022] 3. The drop-out fuse movable contact assembly device and assembly method described in the application, by setting the positioning component, the modular design makes the positioning component adaptable to different inner diameters of the fuse tube, and by replacing the positioning pin, the positioning plate and the sleeve, the equipment specification switching can be completed, meeting the production needs of multiple models of products. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a device rack three-dimensional structure schematic diagram of the embodiment of the application; Figure 2 is a partial enlarged view of position A in Figure 1 Figure 3 is a three-dimensional structure schematic diagram of the embodiment of the application; Figure 4 is a side cross-sectional structure schematic diagram of the embodiment of the application; Figure 5 is a partial enlarged view of position B in Figure 4 Figure 6 is a three-dimensional structure schematic diagram of the embodiment of the application; Figure 7 is a partial enlarged view of position C in Figure 6 Figure 8 is a three-dimensional structure schematic diagram of the L-shaped mounting plate of the embodiment of the application; Figure 9 is a three-dimensional structure schematic diagram of the clamping block of the embodiment of the application Explanation of reference numerals: 100, device rack; 101, base; 102, workbench; 103, stand; 200, positioning component; 201, positioning plate; 202, positioning pin; 203, T-shaped groove; 300, drop-out fuse; 301, fuse tube; 302, separation device; 303, hook and loop fastener; 304, movable contact; 400, movable contact assembly mechanism; 401, L-shaped mounting plate; 402, guide column; 403, sliding plate; 404, sleeve; 405, first motor; 406, positioning groove; 407, compression spring; 408, limiting baffle; 500, driving component; 501, first ball screw; 502, first nut seat; 503, second motor; 600, clamping component; 601, arc-shaped clamping plate; 602, bidirectional ball screw; 603, second nut seat; 604, worm gear; 605, worm; 700, reset spring; 701, link plate; 702, guide rod; 703, clamping block. DETAILED DESCRIPTION

[0024] ​​​The following description is made in connection with Figures 1 to 9 The application is described in further detail below.

[0025] Example One Please focus on Figures 1 to 3 and Figure 8 A falling type fuse moving contact assembly device, comprising a device frame 100 and a moving contact assembly mechanism 400, the device frame 100 comprises a base 101, a workbench 102 fixedly installed on the upper surface of the base 101, and a stand 103 fixedly installed on the upper surface of the base 101, and the upper surface of the workbench 102 is provided with a positioning component 200, the positioning component 200 is provided with a falling type fuse 300, the falling type fuse 300 comprises a fuse tube 301, a separation device 302 located at the bottom of the fuse tube 301, a hook ring fixing part 303 located at the top of the fuse tube 301, and a moving contact 304 threadedly connected with the hook ring fixing part 303, the positioning component 200 comprises a positioning plate 201, and a positioning pin 202 fixedly installed on the upper surface of the positioning plate 201, and a plurality of T-shaped grooves 203 are equidistantly opened on the upper surface of the workbench 102, the inner wall of the T-shaped groove 203 is provided with a T-shaped nut block, the upper surface of the positioning plate 201 is provided with four bolt holes in a rectangular array, the positioning plate 201 and the workbench 102 can be assembled into one body through the cooperation of the T-shaped nut block and the bolt, and the outer diameter of the positioning pin 202 is matched with the inner diameter of the fuse tube 301.

[0026] Specifically, four T-shaped nut blocks are slid into the T-shaped grooves 203, then the positioning plate 201 is placed on the workbench 102, then the T-shaped nut blocks are moved to the positions corresponding to the bolt holes on the positioning plate 201, then the bolts are passed through the bolt holes and screwed into the T-shaped nut blocks, so that the positioning plate 201 can be fixedly installed on the workbench 102, then the bottom of the fuse tube 301 is inserted into the positioning pin 202, so that the falling type fuse 300 is preliminarily positioned on the positioning component 200.

[0027] Please focus on Figure 1 , Figure 4 and Figure 8The moving contact assembly mechanism 400 comprises a rail groove opened in the front surface of the stand 103, an L-shaped mounting plate 401 slidingly fitted in the front surface of the stand 103, two guide columns 402 symmetrically and fixedly installed in the inner top wall of the L-shaped mounting plate 401, and a rotating part slidingly fitted on the surface of the guide column 402, and the inside of the stand 103 is provided with a driving part 500 for driving the L-shaped mounting plate 401 to move, the inside of the base 101 is provided with a clamping part 600 for clamping the drop-out fuse 300, the rotating part comprises a sliding plate 403 slidingly fitted on the surface of the guide column 402, a sleeve 404 rotatably installed on the lower surface of the sliding plate 403, and a first motor 405 fixedly installed on the upper surface of the sliding plate 403, and the shaft end of the first motor 405 is fixedly connected with the upper end of the sleeve 404 through a magnetic coupling, and the inner wall of the sleeve 404 is provided with a positioning groove 406 matched with the moving contact 304, and the driving part 500 comprises an installation groove opened in the inside of the stand 103, a first ball screw 501 rotatably installed on the inner wall of the installation groove, a first nut block 502 screwingly driven by the first ball screw 501, and a second motor 503 fixedly installed on the inner wall of the installation groove for driving the first ball screw 501 to rotate, the first nut block 502 is slidingly fitted with the rail groove, and one end of the first nut block 502 passes through the rail groove and is fixedly connected with the back surface of the L-shaped mounting plate 401.

[0028] Specifically, driving the second motor 503 to rotate can drive the first ball screw 501 to rotate, and the first ball screw 501 and the first nut block 502 are screwingly driven, so that the first nut block 502 can slide along the inner wall of the rail groove, thereby driving the L-shaped mounting plate 401 to move synchronously with the first nut block 502, and the driving part 500 can drive the L-shaped mounting plate 401 to descend, thereby driving the moving contact 304 to enter the positioning groove 406, and then driving the first motor 405 to rotate can drive the sleeve 404 to rotate, and the sleeve 404 can drive the moving contact 304 to be screwingly connected with the hook ring fixing part 303 after rotating.

[0029] Please refer to Figure 8 The surface of the guide column 402 is sleeved with a compression spring 407, both ends of the compression spring 407 abut against the inner top wall of the L-shaped mounting plate 401 and the upper surface of the sliding plate 403 respectively, and the lower end of the guide column 402 is fixedly installed with a limiting baffle 408.

[0030] Specifically, after the driving part 500 drives the sleeve 404 to descend and drives the moving contact 304 to enter the positioning groove 406, the driving part 500 continues to drive the sleeve 404 to descend, and the sleeve 404 can drive the compression spring 407 to compress under stress, thereby providing appropriate assembly pressure, and the limiting baffle 408 is used for limiting the sliding plate 403.

[0031] The working principle of the embodiment is as follows: the positioning plate 201 is fixedly installed on the T-shaped groove 203 of the workbench 102 through the T-shaped nut block and the bolt, then the fuse tube 301 is inserted into the positioning pin 202 at the bottom, so that the drop-out fuse 300 is preliminarily positioned on the positioning component 200, the movable contact 304 is pre-installed on the threads of the hook ring fixing part 303, the second motor 503 in the driving component 500 is started to drive the first ball screw 501 to rotate, in the process of rotating the first ball screw 501, the L-shaped mounting plate 401 moves downward along the track groove to make the guide column 402 and the rotating component move downward synchronously, at this time, the sleeve 404 is aligned with the movable contact 304 and enters the positioning groove 406 in the sleeve 404, after the movable contact 304 enters the positioning groove 406 in the sleeve 404, the compression spring 407 starts to compress to provide appropriate assembly pressure, then the first motor 405 is started to drive the sleeve 404 to rotate through the magnetic coupling, after the sleeve 404 rotates, the movable contact 304 can be driven to be threadedly connected with the hook ring fixing part 303, the magnetic coupling is automatically disconnected when the preset torque is reached, which improves the assembly efficiency and avoids that the movable contact 304 and the hook ring fixing part 303 are not connected firmly or are over-tightened.

[0032] Embodiment two Compared with the first embodiment, another embodiment of the application is as follows: Please refer to Figure 2 and Figures 5 to 7 The clamping component 600 comprises a guide groove opened in the front surface of the stand column 103, two arc-shaped clamping plates 601 slidingly fitted on the inner wall of the guide groove, a cavity opened in the inner part of the base 101, a double-direction ball screw 602 rotatably installed on the inner wall of the cavity, two second nut seats 603 in screw transmission with the double-direction ball screw 602, and a worm wheel 604 fixedly installed on the middle part of the double-direction ball screw 602, the installation groove and the cavity are in communication, the lower end of the first ball screw 501 is fixedly installed with a worm 605, the lower end of the worm 605 is rotatably connected with the inner bottom wall of the cavity, the worm wheel 604 is in meshing transmission with the worm 605, and one end of each of the two second nut seats 603 is fixedly connected with one end of each of the two arc-shaped clamping plates 601, and the inner annular surface of the arc-shaped clamping plate 601 is matched with the outer diameter of the fuse tube 301.

[0033] Specifically, when the first ball screw 501 rotates, the worm 605 can be driven to rotate, the double-direction ball screw 602 can be driven to rotate through the meshing transmission between the worm wheel 604 and the worm 605, and the arc-shaped clamping plates 601 can be driven to clamp the fuse tube 301 from both sides synchronously through the screw transmission between the double-direction ball screw 602 and the two second nut seats 603.

[0034] Please refer to Figure 9The lower surface of the sliding plate 403 is symmetrically fixed with two connecting plates 701, the surface of the connecting plate 701 is provided with a through hole, the inner wall of the through hole is slidably connected with a guide rod 702, one end of the guide rod 702 is fixedly connected with a clamping block 703, and the surface of the guide rod 702 is sleeved with a reset spring 700 for driving the two clamping blocks 703 to contact each other, and the lower end of the clamping block 703 is wedge-shaped.

[0035] Specifically, when the L-shaped mounting plate 401 moves downward along the track groove, the connecting plate 701 is lowered synchronously, so that the clamping block 703 contacts the protruding portion of the hook ring fixing part 303, and after the clamping block 703 contacts the hook ring fixing part 303, the clamping block 703 is separated to the two sides, so that the protruding portion of the hook ring fixing part 303 enters between the two clamping blocks 703, and then the reset spring 700 is matched to clamp the protruding portion.

[0036] The working principle of the embodiment is as follows: when the first ball screw 501 rotates, the first ball screw 501 drives the bidirectional ball screw 602 to rotate synchronously through the meshing transmission of the worm 605 and the worm wheel 604, the two second nut seats 603 move towards each other along the bidirectional ball screw 602, push the two arc-shaped clamping plates 601 to close, and the arc-shaped clamping plates 601 clamp the fuse tube 301 from both sides, so as to ensure the stability during assembly and avoid the rotation of the drop-out fuse 300, and when the first ball screw 501 rotates, the L-shaped mounting plate 401 moves downward along the track groove synchronously, the connecting plate 701 is lowered synchronously when the L-shaped mounting plate 401 moves downward along the track groove, so that the clamping block 703 contacts the protruding portion of the hook ring fixing part 303, and after the clamping block 703 contacts the hook ring fixing part 303, the clamping block 703 is separated to the two sides, so that the protruding portion of the hook ring fixing part 303 enters between the two clamping blocks 703, and then the reset spring 700 is matched to clamp the protruding portion, further improving the stability of assembly.

[0037] A drop-out fuse moving contact assembly method, comprising the following steps: Step 1: the positioning plate 201 is fixedly installed on the T-shaped groove 203 of the workbench 102 through the T-shaped nut block and the bolt, and then the fuse tube 301 is inserted into the positioning pin 202, so that the drop-out fuse 300 is preliminarily positioned on the positioning part 200. ‌Step 2: The movable contact 304 is pre-installed on the thread of the hook fixing part 303, the second motor 503 in the driving component 500 is started to rotate the first ball screw 501, the first ball screw 501 drives the bidirectional ball screw 602 to rotate synchronously through the meshing transmission of the worm 605 and the worm gear 604, the two second nut seats 603 move towards each other along the bidirectional ball screw 602 to push the two arc-shaped clamping plates 601 to close, the arc-shaped clamping plates 601 clamp the fuse tube 301 from both sides to ensure stability during assembly, at the same time, the L-shaped mounting plate 401 moves downward along the track groove to make the guide column 402 and the rotating component move downward synchronously, at this time the sleeve 404 is aligned with the movable contact 304, the movable contact 304 is driven into the positioning groove 406 in the sleeve 404, then the L-shaped mounting plate 401 continues to descend until the arc-shaped clamping plates 601 clamp the fuse tube 301 from both sides, at this time the compression spring 407 has appropriate compression force to provide appropriate assembly pressure, then the first motor 405 is started to rotate the sleeve 404 through the magnetic coupling, the sleeve 404 drives the movable contact 304 to be threadedly connected with the hook fixing part 303, the magnetic coupling is automatically disconnected when the preset torque is reached to prevent overtightening, and the L-shaped mounting plate 401 moves downward along the track groove to drive the abutment plate 701 to move downward synchronously, so as to drive the clamping block 703 to contact the protruding part of the hook fixing part 303, then the protruding part is clamped by the reset spring 700; ‌Step 3: After the assembly is completed, the first motor 405 stops running, the driving component 500 works in reverse to lift the L-shaped mounting plate 401, at the same time the clamping component 600 releases the fuse tube 301, the clamping block 703 is separated from the protruding part of the hook fixing part 303, then the assembled drop-out fuse 300 is taken out for inspection.

Claims

1. A device for assembling the moving contact of a drop-out fuse, characterized in that, include: The equipment rack (100) includes a base (101), a workbench (102) fixedly installed on the upper surface of the base (101), and a column (103) fixedly installed on the upper surface of the base (101). The upper surface of the workbench (102) is provided with a positioning component (200), and a drop-out fuse (300) is provided on the positioning component (200). The drop-out fuse (300) consists of a fuse tube (301), a separation device (302) located at the bottom of the fuse tube (301), a hook and ring fixing component (303) located at the top of the fuse tube (301), and a moving contact (304) threadedly connected to the hook and ring fixing component (303). The moving contact assembly mechanism (400) includes a track groove on the front of the column (103), an L-shaped mounting plate (401) that slides on the front of the column (103) through the track groove, two guide posts (402) that are symmetrically fixed on the inner top wall of the L-shaped mounting plate (401), and a rotating component that slides on the surface of the guide posts (402). The column (103) is provided with a driving component (500) for driving the L-shaped mounting plate (401) to move, and the base (101) is provided with a clamping component (600) for clamping the drop-out fuse (300).

2. The moving contact assembly device for a drop-out fuse according to claim 1, characterized in that, The rotating component includes a sliding plate (403) that slides on the surface of the guide post (402), a sleeve (404) that is rotatably mounted on the lower surface of the sliding plate (403), and a first motor (405) that is fixedly mounted on the upper surface of the sliding plate (403). The shaft end of the first motor (405) is fixedly connected to the upper end of the sleeve (404) through a magnetic coupling. The inner wall of the sleeve (404) is provided with a positioning groove (406) that is adapted to the moving contact (304).

3. The moving contact assembly device for a drop-out fuse according to claim 1, characterized in that, A compression spring (407) is sleeved on the surface of the guide post (402). The two ends of the compression spring (407) abut against the inner top wall of the L-shaped mounting plate (401) and the upper surface of the sliding plate (403), respectively. A limit stop plate (408) is fixedly installed at the lower end of the guide post (402).

4. The moving contact assembly device for a drop-out fuse according to claim 1, characterized in that, The positioning component (200) includes a positioning plate (201) and a positioning pin (202) fixedly installed on the upper surface of the positioning plate (201). The upper surface of the worktable (102) is provided with multiple T-shaped grooves (203) at equal intervals. The inner wall of the T-shaped groove (203) is provided with a T-shaped nut block. The upper surface of the positioning plate (201) is provided with four bolt holes in a rectangular array. The positioning plate (201) and the worktable (102) can be assembled into one unit by the cooperation of the T-shaped nut block and the bolt. The outer diameter of the positioning pin (202) is adapted to the inner diameter of the fuse tube (301).

5. The moving contact assembly device for a drop-out fuse according to claim 1, characterized in that, The drive component (500) includes a mounting groove inside the column (103), a first ball screw (501) rotatably mounted on the inner wall of the mounting groove, a first nut seat (502) that is helically driven with the first ball screw (501), and a second motor (503) fixedly mounted on the inner wall of the mounting groove for driving the first ball screw (501) to rotate.

6. The moving contact assembly device for a drop-out fuse according to claim 5, characterized in that, The first nut seat (502) is slidably engaged with the track groove, and one end of the first nut seat (502) passes through the track groove and is fixedly connected to the back of the L-shaped mounting plate (401).

7. The moving contact assembly device for a drop-out fuse according to claim 5, characterized in that, The clamping component (600) includes a guide groove on the front of the column (103), two arc-shaped clamps (601) that slide in the inner wall of the guide groove, a cavity inside the base (101), a bidirectional ball screw (602) that is rotatably installed on the inner wall of the cavity, two second nut seats (603) that are helically driven by the bidirectional ball screw (602), and a worm gear (604) that is fixedly installed in the middle of the bidirectional ball screw (602).

8. The moving contact assembly device for a drop-out fuse according to claim 7, characterized in that, The mounting groove is connected to the cavity. A worm (605) is fixedly installed at the lower end of the first ball screw (501). The lower end of the worm (605) is rotatably connected to the inner bottom wall of the cavity. The worm wheel (604) meshes with the worm (605) for transmission. One end of each of the two second nut seats (603) is fixedly connected to one end of each of the two arc-shaped clamps (601). The inner ring surface of the arc-shaped clamps (601) is adapted to the outer diameter of the fuse tube (301).

9. The moving contact assembly device for a drop-out fuse according to claim 2, characterized in that, Two connecting plates (701) are symmetrically fixedly installed on the lower surface of the sliding plate (403). The surface of the connecting plate (701) is provided with a through hole. A guide rod (702) is slidably fitted on the inner wall of the through hole. A clamping block (703) is fixedly installed on one end of the guide rod (702). A reset spring (700) for driving the two clamping blocks (703) to contact is sleeved on the surface of the guide rod (702). The lower end of the clamping block (703) is wedge-shaped.

10. A method for assembling the moving contact of a drop-out fuse, applied to the assembly device for the moving contact of a drop-out fuse as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Fix the positioning plate (201) to the T-slot (203) of the workbench (102) with T-nut blocks and bolts. Then insert the bottom of the fuse tube (301) into the positioning pin (202) so that the drop-out fuse (300) is initially positioned on the positioning component (200). Step 2: The moving contact (304) is pre-installed on the thread on the hook and ring fixing part (303). The second motor (503) in the drive component (500) is started, which drives the first ball screw (501) to rotate. The first ball screw (501) drives the bidirectional ball screw (602) to rotate synchronously through the meshing transmission of the worm gear (605) and worm wheel (604). The two second nut seats (603) move towards each other along the bidirectional ball screw (602), pushing the two arc-shaped clamps (601) to close. The arc-shaped clamps (601) clamp the fuse tube (301) from both sides to ensure stability during the assembly process. At the same time, during the rotation of the first ball screw (501), the L-shaped mounting plate (401) moves downward along the track groove to make the guide post (402) and the rotating part move downward synchronously. At this time, the sleeve (404) is aligned with the moving contact (304). The moving contact (304) is driven into the positioning groove (406) in the sleeve (404). Then the L-shaped mounting plate (401) continues to descend until the arc-shaped clamping plate (601) clamps the fuse tube (301) from both sides. At this time, the compression spring (407) has appropriate compression force to provide appropriate assembly pressure. Then the first motor (405) is started, and the sleeve (404) is driven to rotate through the magnetic coupling. The sleeve (404) drives the moving contact (304) to make a threaded connection with the hook ring fixing part (303). The magnetic coupling automatically disengages when the preset torque is reached to prevent over-tightening. When the L-shaped mounting plate (401) moves down along the track groove, it will drive the connecting plate (701) to descend synchronously, so that the clamping block (703) can be driven to contact the protrusion of the hook ring fixing part (303). Then, the return spring (700) clamps the protrusion. Step 3: After the assembly is completed, the first motor (405) stops running, the drive component (500) reverses to lift the L-shaped mounting plate (401), and at the same time the clamping component (600) releases the fuse tube (301). Then the assembled drop-out fuse (300) is taken out for inspection.

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