A chain pre-tensioning and disassembling device

Abstract

The present invention discloses a chain pre-tensioning and disassembling device, and its technical scheme includes: a workbench, a hydraulic system, a tight joint detection device, a brake device, a pre-tensioning device, a pre-tensioning feeding device, a disassembling feeding device and a disassembling device respectively installed on the workbench. The chain passes through the tight joint detection device, the brake device, the pre-tensioning device, the pre-tensioning feeding device, the disassembling feeding device and the disassembling device in sequence to complete the pre-tensioning and disassembling of the chain. Multiple functions such as flexibility detection, pre-tensioning and disassembling are realized on the same device, which reduces the transfer time and improves work efficiency. The chain is detected by the tight joint detection device, which improves the detection efficiency and the product qualification rate. The pre-tensioning feeding device is used to feed the material, which replaces the manual chain dragging, reduces the labor intensity of the workers and improves the production efficiency; the disassembling feeding device is controlled by the PLC to realize the chain disassembling and feeding process, and the disassembling device realizes the chain disassembling.

Description

Technical Field

[0001] The invention relates to the technical field of chains, in particular to a chain pre-tensioning and disassembling device. Background Art

[0002] During the production process of the chain, the chain needs to be riveted first, and then transferred to the next process for pre-tensioning. After pre-tensioning, the chain is transferred to the next process for disassembly, and then tested after disassembly, and finally the reel is put into storage. This process is not only labor-intensive, but also easily causes unstable chain quality, low production efficiency, and high labor input. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a chain pre-tensioning and disassembling device, which uses a machine to replace manual labor in feeding, flexibility testing, pre-tensioning and disassembling, thereby improving production efficiency and product qualification rate.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a chain pre-tensioning and disassembling equipment, including a workbench, a hydraulic system, a tight joint detection device, a braking device, a pre-tensioning device, a pre-tensioning feeding device, a disassembling feeding device and a disassembling device respectively installed on the workbench, and the chain passes through the tight joint detection device, the braking device, the pre-tensioning device, the pre-tensioning feeding device, the disassembling feeding device and the disassembling device in sequence to complete the pre-tensioning and disassembling work of the chain.

[0005] Preferably: a manual disassembly device for a tight-joint chain is provided on the right side of the tight-joint detection device, and two through holes with the same pitch as the chain and a larger aperture than the chain pins are provided above the manual disassembly device. When the tight-joint detection device detects that there is a tight joint in the chain, the tight segment of the chain is manually dragged to the manual disassembly device, and the two pins of the tight-joint chain are aligned with the two through holes of the manual disassembly device, and the chain is manually disassembled. The removed pins fall freely through the two through holes into the waste pin collection box below the manual disassembly device, thereby ensuring the smoothness of the entire pre-tensioning and disassembly process.

[0006] Preferably: the tight joint detection device includes a fixed roller, a movable roller, a movable rod, a movable rod fixed channel and a channel cover plate, the fixed roller and the movable roller are both installed with deep groove ball bearings, the movable roller is installed in the movable rod fixed channel through a movable rod, a tension spring is installed on the movable rod, the other end of the tension spring is connected to the top of the channel cover plate, and the movable rod automatically slides in the movable rod fixed channel after receiving the bidirectional force of the tension spring and the movable roller. When the chain has a tight joint, it can be sensed and stop working.

[0007] Preferably: the brake device is composed of a front brake fixed block, a damping block, a damping fixed seat, a damping cover plate, a spring fixed block and a compression spring. A damping cover plate is installed above the damping fixed seat. The spring fixed block is fixedly connected to the rear side of the damping fixed seat. The damping block and the inside of the damping fixed seat are clearance-matched, and the damping block is connected to the spring fixed block through a compression spring. The elastic force of the compression spring pushes the damping block forward, thereby pressing the chain, thereby ensuring that the chain receives a certain clamping force during the movement and that the chain can move freely. The damping block clamps the chain from the side, so that the chain remains straight during the forward movement, thereby reducing the situation where the chain is not positioned correctly when the chain stops moving due to inertia during the movement.

[0008] Preferably: the pre-tensioning device includes a pre-tensioning cylinder, an L-shaped guide rail, a fixed clamping mechanism, a fixed light wheel mechanism and a movable clamping mechanism. The fixed clamping mechanism and the movable clamping mechanism are installed on the workbench. L-shaped guide rails are installed on both sides of the movable clamping mechanism on the workbench. One side of the movable clamping mechanism is driven by the pre-tensioning cylinder. The movable clamping mechanism includes a pre-tensioning clamping cylinder, a movable clamping assembly, a clamping plate channel and a pre-tensioning clamping plate. The pre-tensioning clamping cylinder drives the movable clamping assembly to move, and the movable clamping assembly simultaneously drives the pre-tensioning clamping plate to move in the clamping plate channel.

[0009] Preferably: the movable clamping assembly includes a bottom plate, a vertical movable cam, a horizontal movable cam, a T-nut and slider grooves at both ends of the vertical movable cam, the pre-tension clamping oil cylinder is connected to the upper side of the vertical movable cam, the two sides of the vertical movable cam are slidably matched with the slider groove, the vertical movable cam is also provided with a T-slot, a T-nut is fixed on one side of the horizontal movable cam, the horizontal movable cam is slidably connected to the T-slot through the T-nut, the other side of the horizontal movable cam is fixedly connected to the pre-tension clamping plug plate, and the pre-tension clamping plug plate is gap matched with the clamping plug plate channel. When the pre-tension clamping oil cylinder moves downward, it pushes the vertical movable cam to move vertically downward, and the vertical movable cam pushes the horizontal movable cam to move horizontally, thereby driving the pre-tension clamping plug plate to move horizontally forward and backward, thereby clamping the chain.

[0010] Preferably: the pre-tensioning and feeding device includes a servo motor, a reduction motor and a pre-tensioning and feeding chain sprocket, the servo motor is installed at the lower end of the reduction motor, the reduction motor is installed under the workbench, the pre-tensioning and feeding chain sprocket is installed above the reduction motor, a pre-tensioning and feeding chain sprocket protection ring is installed on one side of the pre-tensioning and feeding chain sprocket, guide plates are installed at the chain inlet and chain outlet of the pre-tensioning and feeding chain sprocket to guide the chain movement, and a sprocket cover is installed above the pre-tensioning and feeding chain sprocket. A sprocket cover is installed above the pre-tensioning and feeding chain sprocket to prevent the pre-tensioning and feeding chain sprocket from falling off the reduction motor. When the sprocket is pre-tensioned, the pre-tensioning and feeding chain sprocket is driven to rotate by the servo driver and the reduction motor, thereby realizing the chain pre-tensioning and feeding process.

[0011] Preferably: the section feeding device comprises a servo motor, a reduction motor and a section chain feeding sprocket, the servo motor is installed at the lower end of the reduction motor, the reduction motor is installed under the workbench, the section chain feeding sprocket is installed above the reduction motor, a section chain feeding sprocket protective ring is installed on one side of the section chain feeding sprocket, a fixed guide sprocket is installed in front of the section chain feeding sprocket at the chain feeding position, guide blocks are installed on both sides of the section chain feeding sprocket at the chain exit position, and a transparent sprocket cover is installed above the section chain feeding sprocket.

[0012] A fixed guide sprocket is installed before the chain enters the section chain feeding sprocket. The chain changes direction through the guide sprocket, so that it can smoothly enter the section chain feeding sprocket. Guide blocks are installed on both sides of the rear of the section chain feeding sprocket to guide the chain, so that it can smoothly enter the section dismantling channel.

[0013] Preferably, the disassembly device comprises a disassembly clamping cylinder, a disassembly clamping plug plate, a disassembly clamping plug plate fixing seat, a disassembly clamping plug plate cover plate, a disassembly feeding channel, a disassembly striker, a disassembly striker seat, a guide column, a slider and a disassembly cylinder, and the disassembly clamping plug plate is clearance-matched with the disassembly clamping plug plate fixing seat;

[0014] The disassembly clamping cylinder is connected to one side of the disassembly clamping plug plate, and the disassembly clamping cylinder drives the disassembly clamping plug plate to move in the disassembly clamping plug plate fixing seat; a disassembly striker corresponds to the top of the disassembly feeding channel, and the disassembly striker is installed on the disassembly striker seat, and the disassembly striker seat is fixed under the slider, and the slider is slidably connected to the guide column through a linear bearing, and the disassembly cylinder is connected to the upper part of the slider through a T-nut.

[0015] When the servo motor on the disassembly feeding device rotates the specified number of times, the PLC controls the reversal of the solenoid valve of the cylinder, thereby realizing the extension and retraction of the disassembly clamping cylinder. The disassembly clamping cylinder is connected to the disassembly clamping plug plate, and the disassembly clamping plug plate moves with the disassembly clamping cylinder, thereby realizing the clamping and positioning of the chain. After the chain is clamped, the disassembly cylinder pushes the slider to move downward along the guide column, thereby pushing the disassembly striker to move downward, removing the pin shaft of the chain. After the pin shaft is removed, the disassembly cylinder moves upward, the disassembly clamping cylinder retreats, and the disassembly feeding sprocket rotates, pushing the chain to move, thereby pushing the disassembled chain out of the disassembly feeding channel, completing the entire disassembly process.

[0016] The present invention has the beneficial effects of:

[0017] Compared with the original technical solution, this solution realizes multiple functions such as flexibility detection, pre-tensioning, and disassembly on the same equipment, reducing the transfer time and improving work efficiency. The chain is tested by the tight joint detection device, which improves the detection efficiency and the product qualification rate. Secondly, the servo motor is used to automatically feed the material instead of manually dragging the chain, which reduces the labor intensity of workers and improves production efficiency.

[0018] The chain disassembly and feeding process is realized by controlling the disassembly and feeding device through PLC. After reaching the set number of sections, the disassembly clamping cylinder pushes the disassembly clamping plate to position the chain, replacing manual visual positioning and solving the problem of visual fatigue of workers. The hydraulic system provides power, and the clamping cylinder, pre-tensioning cylinder and disassembly clamping cylinder are switched through the solenoid valve to realize the forward and backward movement of the clamping cylinder, pre-tensioning cylinder and disassembly clamping cylinder, realizing automatic pre-tensioning and disassembling of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the tight joint detection device of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 It is a schematic diagram of the structure of the brake device in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the pre-tensioning device in the present invention;

[0023] Figure 5 It is a schematic diagram of the movable clamping mechanism in the present invention;

[0024] Figure 6 It is a partial schematic diagram of the movable clamping mechanism in the present invention;

[0025] Figure 7 This is a schematic structural diagram of the pre-tensioning feeding device of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the disassembly feeding device of the present invention;

[0027] Fig. 9 This is a schematic diagram of the structure of the disassembly device of the present invention;

[0028] Fig.10 It is a partially enlarged schematic diagram of the disassembly device of the present invention.

[0029] Reference numerals: 1, joint detection device; 11, fixed roller; 12, movable rod fixing channel; 13, channel cover; 14, movable roller, 15, tension spring; 16, manual joint disassembly device; 17, workbench; 18, movable rod; 2, brake device; 21, front brake fixing block; 22, damping fixing seat; 23, damping cover; 24, spring fixing block; 3, pre-tensioning device; 30, fixed clamping mechanism; 31, pre-tensioning clamping cylinder; 32. Pre-tensioning cylinder; 33. L-shaped guide rail; 34. Fixed light wheel mechanism; 35. Bottom plate; 36. Vertical movable wedge; 37. Horizontal movable wedge; 38. Slider slot; 391. Clamping plate channel; 392. Pre-tensioning clamping plate; 4. Pre-tensioning feeding device; 41. Pre-tensioning chain sprocket; 42. Pre-tensioning chain sprocket protection ring; 43. Guide plate; 5. Disassembling feeding device; 51. Disassembling Chain feeding sprocket; 52, dismantling chain feeding sprocket protection ring; 53, fixing guide sprocket; 54, guide block; 6, dismantling device; 61, dismantling clamping cylinder; 62, dismantling clamping plug plate; 63, dismantling clamping plug plate fixing seat; 64, dismantling clamping plug plate cover plate; 65, dismantling feeding channel; 66, dismantling impactor; 67, dismantling impactor seat; 68, guide column; 69, slider; 70, dismantling cylinder. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are further described in detail with reference to the accompanying drawings.

[0031] like Figure 1-9 The chain pre-tensioning and disassembling equipment comprises a workbench 17, a hydraulic system, a tight joint detection device 1, a brake device 2, a pre-tensioning device 3, a pre-tensioning feeding device 4, a disassembling feeding device 5 and a disassembling device 6 respectively installed on the workbench 17. The chain passes through the tight joint detection device 1, the brake device 2, the pre-tensioning device 3, the pre-tensioning feeding device 4, the disassembling feeding device 5 and the disassembling device 6 in sequence to complete the pre-tensioning and disassembling work of the chain.

[0032] like Figure 1-2The tight joint detection device 1 includes a fixed roller 2, a movable roller 14, a movable rod 18, a movable rod fixed channel 12 and a channel cover 13. The fixed roller 2 and the movable roller 14 are both installed with deep groove ball bearings. The movable roller is installed in the movable rod fixed channel 12 through a movable rod 18. A tension spring 15 is installed on the movable rod. The other end of the tension spring 15 is connected to the top of the channel cover 13. The movable rod automatically slides in the movable rod fixed channel 12 after receiving the bidirectional force of the tension spring 15 and the movable roller 14. A proximity switch is also arranged on the workbench 17. When the chain has a tight joint, the movable roller 14 receives a relatively large force, thereby pushing the movable rod 18 to move in the direction of the movable roller 14. The fixing bolt installed on the movable rod 18 is close to the proximity switch, so that the proximity switch is turned on. After the PLC senses this signal, it alarms and stops the servo motor that drives the fixed roller 2 to rotate. Unqualified chains can be stuck and the test results can be fed back through an external alarm to improve the test efficiency and product qualification rate.

[0033] A manual disassembly device 16 for a tight-joint chain is provided on the right side of the tight-joint detection device 1. Two through holes with the same pitch as the chain and a larger aperture than the chain pins are provided above the manual disassembly device 16. When the tight-joint detection device 1 detects that there is a tight joint in the chain, the tight segment of the chain is manually dragged to the manual disassembly device 16, and the two pins of the tight-joint chain are aligned with the two through holes of the manual disassembly device 16. The chain is manually disassembled, and the removed pins fall freely through the two through holes into the waste pin collection box below the manual disassembly device 16, thereby ensuring the smoothness of the entire pre-tensioning and disassembly process.

[0034] like Figure 3 The brake device 2 is composed of a front brake fixed block 21, a damping block, a damping fixed seat 22, a damping cover plate 23, a spring fixed block 24 and a compression spring. The damping cover plate 23 is installed above the damping fixed seat 22. The spring fixed block 24 is fixedly connected to the rear side of the damping fixed seat 22. The damping block and the damping fixed seat are clearance-matched. The rear side of the damping block is provided with a bolt mounting hole and a spring mounting hole. A compression spring is installed in the spring mounting hole. The other end of the compression spring is connected to the spring fixed block 24. The spring fixed block 24 is fixed on the damping fixed seat 22. The damping block is pushed forward by the elastic force of the compression spring, thereby pressing the chain, thereby ensuring that the chain receives a certain clamping force during the movement and that the chain can move freely. The damping block clamps the chain from the side, so that the chain remains straight during the forward movement, thereby reducing the situation where the chain is not positioned accurately when the chain stops moving due to inertia during the movement.

[0035] like Figure 4-6The pre-tensioning device 3 includes a pre-tensioning cylinder 32, an L-shaped guide rail 33, a fixed clamping mechanism 30, a fixed light wheel mechanism 34 and a movable clamping mechanism. The fixed clamping mechanism 30 is fixedly installed on the workbench 17, and the movable clamping mechanism is movably installed on the workbench 17. L-shaped guide rails 33 are installed on both sides of the movable clamping mechanism on the workbench 17. One side of the movable clamping mechanism is driven by the pre-tensioning cylinder 32. The movable clamping mechanism includes a pre-tensioning clamping cylinder 31, a movable clamping assembly, a clamping plate channel 391 and a clamping pre-tensioning clamping plate 392. The pre-tensioning clamping cylinder 31 drives the movable clamping assembly to move, and the movable clamping assembly simultaneously drives the clamping pre-tensioning clamping plate 392 to move in the clamping plate channel 391.

[0036] The movable clamping assembly includes a base plate 35, a vertical movable inclined wedge 36, a horizontal movable inclined wedge 37, a T-nut and slider grooves 38 at both ends of the vertical movable inclined wedge 36. The pre-tensioning clamping cylinder 31 is connected to the upper side of the vertical movable inclined wedge 36. The two sides of the vertical movable inclined wedge 36 are slidingly matched with the slider grooves 38. The vertical movable inclined wedge 36 is also provided with a T-slot. A T-nut is fixed on one side of the horizontal movable inclined wedge 37. The horizontal movable inclined wedge 37 is slidingly connected to the T-slot through the T-nut. The other side of the horizontal movable inclined wedge 37 is fixedly connected to the pre-tensioning clamping plate 392. The pre-tensioning clamping plate 392 is clearance-matched with the clamping plate channel 391.

[0037] When the pre-tensioning clamping oil cylinder 31 moves downward, it pushes the vertical movable inclined wedge 36 to move vertically downward, and the vertical movable inclined wedge 36 pushes the horizontal movable inclined wedge 37 to move horizontally, thereby driving the pre-tensioning clamping plug plate 392 to move horizontally forward and backward, thereby clamping the chain.

[0038] The pre-tension clamping plate 392 can be provided with a screw rod, and a sensor can be provided on the pre-tension clamping oil cylinder 31. When the pre-tension clamping plate 392 moves horizontally, the screw rod on the pre-tension clamping plate 392 also moves horizontally accordingly. When the pre-tension clamping plate 392 reaches the specified position, the fixed screw rod approaches the sensor, thereby giving a signal to the PLC, and the PLC controls the pre-tension cylinder 32 to pre-tension. A tension sensor is provided on the pre-tension cylinder 32, which is connected to the movable clamping mechanism through the tension sensor, and the movable clamping mechanism can move freely in the L-shaped guide rail 33 along the guide rail direction. After the pre-tensioning clamping cylinder 31 clamps the chain, the pre-tensioning clamping cylinder 31 starts to move, and the tension sensor connected to the pre-tensioning clamping cylinder 31 is subjected to tension, and the internal voltage of the tension sensor changes slightly. The signal is amplified by the tension sensor amplifier and transmitted to the PLC. When the pre-tensioning force reaches the PLC set value, the pre-tensioning cylinder 32 maintains the pressure and then retreats, thereby completing a pre-tensioning process.

[0039] like Figure 7The pre-tensioning and feeding device 4 includes a servo motor, a reduction motor and a pre-tensioning and feeding chain sprocket 41. The servo motor is installed at the lower end of the reduction motor, the reduction motor is installed under the workbench 17, the pre-tensioning and feeding chain sprocket 41 is installed above the reduction motor, a pre-tensioning and feeding chain sprocket protection ring 42 is installed on one side of the pre-tensioning and feeding chain sprocket 41, and a guide plate 43 is installed at the chain inlet and chain outlet of the pre-tensioning and feeding chain sprocket 41 to guide the chain movement. A sprocket cover is installed above the pre-tensioning and feeding chain sprocket 41. A sprocket cover is installed above the pre-tensioning and feeding chain sprocket 41 to prevent the pre-tensioning and feeding chain sprocket from falling off the reduction motor. When the sprocket is pre-tensioned, the PLC gives a signal to the servo driver, the servo driver controls the servo motor to rotate, the servo motor extends a shaft connected to the reduction motor, and the output shaft of the reduction motor is fixed to the pre-tensioning and feeding chain sprocket through an expansion sleeve, thereby driving the pre-tensioning and feeding chain sprocket to rotate, thereby realizing the chain pre-tensioning and feeding process. Servo motors are used for feeding, replacing manual chain dragging. PLC program control is used to adjust the pre-tensioning force, replacing manual pre-tensioning force adjustment, thus reducing the labor intensity of workers.

[0040] like Figure 8 The disassembly feeding device 5 includes a servo motor, a reduction motor and a disassembly chain feeding sprocket 51, the servo motor is installed at the lower end of the reduction motor, the reduction motor is installed under the workbench 17, the disassembly chain feeding sprocket 51 is installed above the reduction motor, a disassembly chain feeding sprocket protective ring 52 is installed on one side of the disassembly chain feeding sprocket 51, a fixed guide sprocket 53 is installed in front of the chain feeding of the disassembly chain feeding sprocket 51, guide blocks 54 are installed on both sides of the chain outlet of the disassembly chain feeding sprocket 51, and a transparent sprocket cover is installed above the disassembly chain feeding sprocket 51.

[0041] The chain is reversed by the guide sprocket, so that it can smoothly enter the disassembly chain feeding sprocket 51. The guide block 54 guides the chain, so that it can smoothly enter the disassembly channel. A transparent sprocket cover is installed above the sprocket, which is both visual and prevents the sprocket from accidentally pinching fingers. When the material sensing switch is turned on in front of the disassembly chain feeding sprocket 51, the PLC sends a signal to the servo driver of the servo motor, and the servo driver controls the servo motor to rotate, thereby driving the reduction motor to drive, and the reduction motor drives the pre-tensioning feeding sprocket to rotate, thereby realizing the disassembly chain feeding process.

[0042] like Fig. 9 The disassembly device 6 includes a disassembly clamping cylinder 61, a disassembly clamping plug plate 62, a disassembly clamping plug plate fixing seat 63, a disassembly clamping plug plate cover plate 64, a disassembly feeding channel 65, a disassembly striker 66, a disassembly striker seat 67, a guide column 68, a slider 69 and a disassembly cylinder 70. The disassembly clamping plug plate 62 is clearance-matched with the disassembly clamping plug plate fixing seat 63.

[0043] The disassembly clamping cylinder 61 is connected to one side of the disassembly clamping plug plate 62, and the disassembly clamping cylinder 61 drives the disassembly clamping plug plate 62 to move in the disassembly clamping plug plate fixing seat 63; the disassembly bumper 66 corresponds to the top of the disassembly feeding channel 65, and the disassembly bumper 66 is installed on the disassembly bumper seat 67, and the disassembly bumper seat 67 is fixed under the slider 69, and the slider 69 is slidably connected to the guide column 68 through a linear bearing, and the disassembly cylinder 70 is connected to the upper part of the slider 69 through a T-nut.

[0044] When the servo motor on the disassembly feeding device 5 rotates a specified number of times, the PLC controls the reversal of the solenoid valve of the cylinder, thereby realizing the extension and retraction of the disassembly clamping cylinder 61. The disassembly clamping cylinder 61 is connected to the disassembly clamping plug 62, and the disassembly clamping plug 62 moves with the disassembly clamping cylinder 61, thereby realizing the clamping and positioning of the chain. After the chain is clamped, the disassembly oil cylinder 70 pushes the slider 69 to move downward along the guide column 68, thereby pushing the disassembly striker 66 to move downward, and remove the pin shaft of the chain. After the pin shaft is removed, the disassembly oil cylinder 70 moves upward, the disassembly clamping cylinder 61 retreats, and the disassembly feeding sprocket 51 rotates, pushing the chain to move, thereby pushing the disassembly chain out of the disassembly feeding channel 65, completing the entire disassembly process.

[0045] The above embodiments are only used to explain the inventive concept of the present invention, rather than to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A chain pre-tensioning and disassembling device, characterized in that: It includes a workbench, a hydraulic system, a tight joint detection device, a brake device, a pre-tensioning device, a pre-tensioning feeding device, a disassembling feeding device and a disassembling device respectively installed on the workbench. The chain passes through the tight joint detection device, the brake device, the pre-tensioning device, the pre-tensioning feeding device, the disassembling feeding device and the disassembling device in sequence to complete the pre-tensioning and disassembling work of the chain. A manual joint dismantling device for the tight joint chain is provided on the right side of the tight joint detection device, and two through holes with the same pitch as the chain and a larger aperture than the chain pin are provided above the manual joint dismantling device; The tight joint detection device comprises a fixed roller, a movable roller, a movable rod, a movable rod fixed channel and a channel cover plate, the fixed roller and the movable roller are both installed with deep groove ball bearings, the movable roller is installed in the movable rod fixed channel through a movable rod, a tension spring is installed on the movable rod, the other end of the tension spring is connected to the top of the channel cover plate, and the movable rod automatically slides in the movable rod fixed channel after receiving the bidirectional force of the tension spring and the movable roller; The brake device is composed of a front brake fixing block, a damping block, a damping fixing seat, a damping cover plate, a spring fixing block and a compression spring. The damping cover plate is installed above the damping fixing seat. The rear side of the damping fixing seat is fixedly connected to the spring fixing block. The damping block and the inside of the damping fixing seat are clearance-matched, and the damping block is connected to the spring fixing block through the compression spring. The pre-tensioning device comprises a pre-tensioning cylinder, an L-shaped guide rail, a fixed clamping mechanism, a fixed light wheel mechanism and a movable clamping mechanism. The fixed clamping mechanism and the movable clamping mechanism are installed on the workbench. The L-shaped guide rails are installed on both sides of the movable clamping mechanism on the workbench. One side of the movable clamping mechanism is driven by the pre-tensioning cylinder. The movable clamping mechanism comprises a pre-tensioning clamping cylinder, a movable clamping assembly, a clamping plate channel and a pre-tensioning clamping plate. The pre-tensioning clamping cylinder drives the movable clamping assembly to move, and the movable clamping assembly drives the pre-tensioning clamping plate to move in the clamping plate channel at the same time. The movable clamping assembly includes a base plate, a vertical movable inclined wedge, a horizontal movable inclined wedge, a T-nut and slider grooves at both ends of the vertical movable inclined wedge. The pre-tensioning clamping cylinder is connected to the upper side of the vertical movable inclined wedge, and the two sides of the vertical movable inclined wedge are slidingly matched with the slider groove. The vertical movable inclined wedge is also provided with a T-slot, and a T-nut is fixed on one side of the horizontal movable inclined wedge. The horizontal movable inclined wedge is slidingly connected to the T-slot through the T-nut, and the other side of the horizontal movable inclined wedge is fixedly connected to the pre-tensioning clamping plug plate, and the pre-tensioning clamping plug plate is gap-matched with the clamping plug plate channel.

2. A chain pre-tensioning and disassembling device according to claim 1, characterized in that: The pre-feeding device includes a servo motor, a reduction motor and a pre-feeding chain sprocket, the servo motor is installed at the lower end of the reduction motor, the reduction motor is installed under the workbench, the pre-feeding chain sprocket is installed above the reduction motor, a pre-feeding chain sprocket protective ring is installed on one side of the pre-feeding chain sprocket, guide plates are installed at the chain inlet and chain outlet of the pre-feeding chain sprocket, and a sprocket cover plate is installed above the pre-feeding chain sprocket.

3. A chain pre-tensioning and disassembling device according to any one of claim 1, characterized in that: The disassembly and feeding device includes a servo motor, a reduction motor and a disassembly and chain feeding sprocket, the servo motor is installed at the lower end of the reduction motor, the reduction motor is installed under the workbench, the disassembly and chain feeding sprocket is installed above the reduction motor, a disassembly and chain feeding sprocket protective ring is installed on one side of the disassembly and chain feeding sprocket, a fixed guide sprocket is installed in front of the chain feeding of the disassembly and chain feeding sprocket, guide blocks are installed on both sides of the chain outlet of the disassembly and chain feeding sprocket, and a transparent sprocket cover is installed above the disassembly and chain feeding sprocket.

4. The chain pre-tensioning and disassembling device according to claim 1, characterized in that: The disassembly device includes a disassembly clamping cylinder, a disassembly clamping plug plate, a disassembly clamping plug plate fixing seat, a disassembly clamping plug plate cover plate, a disassembly feeding channel, a disassembly striker, a disassembly striker seat, a guide column, a slider and a disassembly oil cylinder, the disassembly clamping plug plate and the disassembly clamping plug plate fixing seat are clearance-matched; the disassembly clamping cylinder is connected to one side of the disassembly clamping plug plate, and the disassembly clamping cylinder drives the disassembly clamping plug plate to move in the disassembly clamping plug plate fixing seat; the disassembly feeding channel corresponds to the disassembly striker above, the disassembly striker is installed on the disassembly striker seat, the disassembly striker seat is fixed below the slider, the slider is slidably connected to the guide column through a linear bearing, and the disassembly oil cylinder is connected to the upper part of the slider through a T-nut.

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