A pre-assembly / disassembly device for large synchronous chain plates

Abstract

This application relates to a pre-assembly / disassembly device for large synchronous chain plates, comprising a steel frame with two steel beams slidably connected to it. Each steel beam is equipped with a gripper, and multiple grippers are arranged along the length of the steel beams. A driving component is provided between the two steel beams to move them closer together or further apart. This application effectively reduces the tension between the chain shaft and the chain, thereby improving the pre-assembly / disassembly preparation efficiency for large synchronous chain plates.

Description

Technical Field

[0001] This application relates to the field of large chain plate disassembly and assembly technology, and in particular to a pre-disassembly and assembly device for large synchronous chain plates. Background Technology

[0002] Large chain conveyors typically use a combination of chains and chain plates, with the entire conveying system driven by the rotation of sprockets. Large chain conveyors are characterized by high load-bearing capacity, long conveying distance, and large conveying capacity, and are commonly used in chain grate conveyors or large scraper conveyors.

[0003] When maintaining the chain plate, it is necessary to replace the chain plate or chain shaft. The usual replacement method is to use ropes or clamps to tighten the replacement section of the chain to a suitable position before the chain shaft can be pulled out and the chain plate and other parts can be replaced.

[0004] However, large chain grate machines or scraper conveyors usually have multiple different chain plates and chains. In this case, it is necessary to tighten multiple chains simultaneously. Using the above method requires a large number of personnel and equipment. At the same time, simultaneous tightening requires rich experience and a high degree of coordination, so it is often time-consuming, labor-intensive, and wasteful of manpower. It is also significantly inefficient in the preparatory work before disassembly and assembly. Summary of the Invention

[0005] In order to reduce the tension between the chain shaft and the chain, thereby improving the pre-preparation efficiency for the disassembly and assembly of large synchronous chain plates, this application provides a pre-disassembly and assembly device for large synchronous chain plates.

[0006] The large synchronous chain plate disassembly and assembly pre-installation device provided in this application adopts the following technical solution:

[0007] A pre-assembly / disassembly device for a large synchronous chain plate includes a steel frame with two steel beams slidably connected to it. Each steel beam is equipped with a gripper, and multiple grippers are arranged along the length of the steel beams. A driving component is provided between the two steel beams to bring them closer or further apart.

[0008] By adopting the above technical solution, the driving component drives two steel beams that are slidably connected to the steel frame to move closer to each other. At this time, multiple grippers set on the steel beams move closer to each other, so that the grippers tighten multiple chains synchronously. When two or more chain links are tightened by the grippers on both sides, the tension between the chain shaft and the chain is reduced, making it easier to pull out the chain shaft later, thereby improving the pre-preparation efficiency for disassembly and assembly of large synchronous chain plates.

[0009] Optionally, two sets of traveling motor rollers are slidably connected to the steel frame along its width direction, and the sets of traveling motor rollers are symmetrically arranged along the center line of the steel frame along its length direction. Both ends of the steel beam are fixedly connected to the sets of traveling motor rollers.

[0010] By adopting the above technical solution, the two ends of the two steel beams are respectively fixedly connected to the roller assembly of the traveling motor in the width direction of the steel frame, so that the two steel beams are parallel to each other, making the driving component smoother when driving the two steel beams to move closer to each other, thereby improving work efficiency.

[0011] Optionally, an adjustment assembly is fixedly connected to the steel frame. The adjustment assembly includes a hydraulic telescopic column and casters. One end of the hydraulic telescopic column is fixedly connected to the steel frame, and the other end is fixedly connected to the casters.

[0012] By adopting the above technical solution, the adjustment component includes a hydraulic telescopic column and casters. The casters can move the entire disassembly and assembly pre-device, and the hydraulic telescopic column can move the entire disassembly and assembly pre-device in the height direction. By adjusting the height and the position of the displacement device, the chain shaft to be extracted can be accurately positioned.

[0013] Optionally, multiple connecting shells are slidably connected to the steel beam, and the grippers are fixedly connected to the connecting shells. The connecting shells and grippers correspond one-to-one. Multiple racks are fixedly connected to the steel beam, and gears that mesh with the racks are rotatably connected inside the connecting shells. A first motor that drives the gears to rotate is provided on the connecting shells.

[0014] By adopting the above technical solution, when the first motor drives the machine, the gear connected to the connecting shell rotates and meshes with the rack, allowing the gripper to move and adjust along the length of the steel frame. This not only compensates for the error caused by the adjustment components but also improves the applicability of the gripper.

[0015] Optionally, multiple support plates are detachably and fixedly connected to the top of the steel frame. The support plates are equipped with sliding plates that abut against the support plates. Multiple hydraulic cylinders are provided on the sliding plates, and the drive shafts of the hydraulic cylinders pass through the sliding plates. Hook plates are provided on the sliding plates, and the top of the hook plates is fixedly connected to the drive shafts of the hydraulic cylinders.

[0016] By adopting the above technical solution, the support plate is detachably and fixedly connected to the steel frame, which further improves the stability of the steel frame. The sliding plate is fixedly connected to the support plate, and the hydraulic cylinder can realize the up and down movement of the hook plate. When the chain shaft is pulled out, the self-weight of the chain plate reduces the efficiency of pulling out the chain shaft, while the hook plate can support the chain plate, thereby improving the efficiency of disassembling the large synchronous chain plate in the later stage when pulling out the chain shaft.

[0017] Optionally, a limiting groove is provided on the support plate, a limiting block is slidably connected in the limiting groove, the limiting block is fixedly connected to the sliding plate, a screw is threadedly connected to the sliding plate, and a second motor that drives the screw to rotate is fixedly connected to the support plate.

[0018] By adopting the above technical solution, when the second motor on the support plate drives the screw to rotate, the limiting block fixedly connected on the sliding plate slides in the limiting groove, thereby driving the sliding plate to move on the support plate, thus improving the applicability of the hook plate.

[0019] Optionally, a mounting plate is fixedly connected to the steel frame. The mounting plate has an L-shaped cross-section and is located in the width direction of the steel frame. The mounting plate is provided with an ejection assembly and has a clearance groove for placing the ejection mechanism.

[0020] By adopting the above technical solution, the ejection mechanism can eject the chain shaft a certain distance, thereby facilitating the extraction of the chain shaft and improving the efficiency of subsequent maintenance of large synchronous chain plates.

[0021] Optionally, the ejection mechanism includes an eccentric wheel, a connecting plate, an ejection shaft, and a first hydraulic cylinder. A rotating shaft is rotatably connected to the mounting plate and fixedly connected to the eccentric wheel. A connecting plate is provided on the side of the mounting plate near the steel frame and fixedly connected to the mounting plate. The ejection shaft passes through the connecting plate. An abutment plate is fixedly connected to the mounting plate. One end of the first hydraulic cylinder is hinged to the abutment plate, and the other end is hinged to the eccentric wheel and away from the rotating shaft.

[0022] By adopting the above technical solution, a rotating shaft is fixedly connected to the eccentric wheel, and the rotating shaft is rotatably connected to the connecting plate. The eccentric wheel is pushed by the first hydraulic cylinder, making it easier for the ejector shaft to eject the chain shaft a certain distance, which further improves the maintenance efficiency of the large synchronous chain plate in the later stage.

[0023] Optionally, an abutment ring plate is fixedly connected to the side of the ejector shaft near the eccentric wheel, and a reset member is coaxially sleeved on the ejector shaft. The reset member is located between the connecting plate and the abutment ring plate, with one end of the reset member abutting the connecting plate and the other end abutting the abutment ring plate.

[0024] By adopting the above technical solution, the reset component can reset the ejector shaft after it has ejected the chain shaft, thereby improving the working efficiency of the ejector mechanism.

[0025] Optionally, multiple reinforcing ribs are fixedly connected between the abutment plate and the mounting plate.

[0026] By adopting the above technical solution, when the first hydraulic cylinder is driven, the shear force between the abutment plate and the mounting plate increases, which can easily cause the abutment plate to fall off the mounting plate. However, multiple reinforcing ribs can improve the shear strength between the abutment plate and the mounting plate, reducing the possibility of the abutment plate falling off the mounting plate.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The driving component drives two steel beams that are slidably connected to the steel frame to move closer to each other. At this time, multiple grippers set on the steel beams move closer to each other, so that the grippers tighten multiple chains synchronously. When two or more chain links are tightened by the grippers on both sides, the tension between the chain shaft and the chain is reduced, making it easier to pull out the chain shaft later, thereby improving the pre-preparation efficiency for disassembly and assembly of large synchronous chain plates.

[0029] 2. The two ends of the two steel beams are respectively fixedly connected to the roller assembly of the traveling motor in the width direction of the steel frame, so that the two steel beams are parallel to each other, making the driving component smoother when driving the two steel beams to move closer to each other, thereby improving work efficiency.

[0030] 3. The support plate is detachably and fixedly connected to the steel frame, which further improves the stability of the steel frame. The sliding plate is fixedly connected to the support plate, and the hydraulic cylinder can move the hook plate up and down. When the chain shaft is pulled out, the self-weight of the chain plate reduces the efficiency of pulling out the chain shaft, while the hook plate can support the chain plate, thereby improving the efficiency of disassembling large synchronous chain plates in the later stage when pulling out the chain shaft.

[0031] 4. A rotating shaft is fixedly connected to the eccentric wheel. The rotating shaft is rotatably connected to the connecting plate. The eccentric wheel is pushed by the first hydraulic cylinder, making it easier for the ejector shaft to push the chain shaft out a certain distance, which further improves the maintenance efficiency of the large synchronous chain plate. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0033] Figure 2 This is a structural schematic diagram of the steel frame and adjustment components of Example 1.

[0034] Figure 3 This is a schematic diagram of the gripper and chain shaft in Example 1.

[0035] Figure 4 This is a cross-sectional schematic diagram of the connecting shell in Embodiment 1.

[0036] Figure 5 This is a schematic diagram of the overall structure of Example 2.

[0037] Figure 6 This is a schematic diagram of the hook plate supporting the chain plate in Example 2.

[0038] Figure 7 This is a schematic diagram of the overall structure of Example 3.

[0039] Figure 8 This is a schematic diagram of the ejector assembly in Embodiment 3, showing its preparation for ejecting the chain shaft.

[0040] Explanation of reference numerals in the attached drawings: 1. Steel frame; 11. Steel beam; 111. Drive component; 12. Crane motor roller assembly; 2. Adjustment assembly; 21. Hydraulic telescopic column; 22. Caster wheel; 3. Connecting shell; 31. Gripper; 32. Rack; 33. Gear; 34. First motor; 4. Support plate; 41. Sliding plate; 411. Screw; 412. Hydraulic cylinder; 413. Hook plate; 42. Limiting groove; 43. Limiting block; 44. Second motor; 5. Mounting plate; 51. Abutment plate; 52. Reinforcing rib; 53. Clearance groove; 6. Ejection assembly; 61. Eccentric wheel; 611. Rotating shaft; 62. Connecting plate; 63. Ejection shaft; 631. Reset component; 632. Abutment ring plate; 64. First hydraulic cylinder. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0042] This application discloses a pre-assembly / disassembly device for a large synchronous chain plate.

[0043] Example 1

[0044] Reference Figures 1 to 3 A large-scale synchronous chain plate assembly / disassembly pre-assembly device includes a steel frame 1, on which two steel beams 11 are slidably connected. Two gantry motor roller assemblies 12 are slidably connected to the steel frame 1 along its width. Both ends of the steel beams 11 are fixedly connected to the gantry motor roller assemblies 12. The gantry motor roller assemblies 12 are electrically controlled by a central control platform. Workers can control the gantry motor roller assemblies 12 to slide the steel beams 11 on the steel frame 1. The steel beams 11 are equipped with grippers 31, which move with the movement of the steel beams 11, and are arranged along the length of the steel beams 11, corresponding one-to-one with the chain. The steel beams 11 are equipped with driving components 111, which are hydraulic telescopic cylinders. Both ends of the hydraulic telescopic cylinders are hinged to the steel beams 11, and multiple cylinders are arranged along the length of the steel beams 11. The hydraulic fluid for the hydraulic telescopic cylinders comes from the central control platform, which supplies hydraulic oil to keep the multiple hydraulic telescopic cylinders operating synchronously. This allows for the clamping of two or more chain links, reducing the tension between the chain shaft and the chain, and making it easier to remove the chain shaft. This improves the efficiency of pre-assembly preparation for the assembly and disassembly of large synchronous chain plates.

[0045] Reference Figures 1 to 3Adjustment components 2 are fixedly connected to the four corners of the steel frame 1. The adjustment components 2 include hydraulic telescopic columns 21 and casters 22. The hydraulic telescopic columns 21 can realize the displacement of the height of the steel frame 1. One end of the hydraulic telescopic columns 21 is fixedly connected to the steel frame 1, and the other end is fixedly connected to the casters 22. By adjusting the height and position, the connection that needs to be repaired can be accurately located, thereby improving the applicability of the device.

[0046] Reference Figure 3 and Figure 4 Multiple connecting shells 3 are slidably connected to the steel frame 1, and the grippers 31 on the steel frame 1 are all fixedly connected to the connecting shells 3. Multiple racks 32 are provided on the steel frame 1, each rack corresponding to a connecting shell 3. Gears 33 are rotatably connected inside the connecting shells 3, meshing with the racks 32. A first motor 34 is fixedly connected to the connecting shells 3, and the output shaft of the first motor 34 drives the gears 33, thereby causing the connecting shells 3 to slide on the steel beam 11. This not only compensates for the adjustment error caused by the adjustment component 2, but also increases the applicability of the grippers 31 by fine-tuning the clamping position of the grippers 31.

[0047] The implementation principle of the pre-assembly / disassembly device for a large synchronous chain plate in Embodiment 1 of this application is as follows:

[0048] Before disassembling and assembling the large synchronous chain plate, preparatory work is required. First, the worker adjusts component 2 to move the disassembly / assembly pre-device to the chain link that needs to be disassembled or repaired via casters 22. Then, the steel frame 1 is lowered by using the hydraulic telescopic column 21.

[0049] The crane motor roller assembly 12 is brought closer together by the main control platform, and the steel beam 11 fixedly connected to the crane motor roller assembly 12 also moves with it, so that the grippers 31 of the steel beam 11 move closer together, thereby clamping two or more sections of the chain, thereby reducing the tension between the chain shaft and the chain.

[0050] When the grippers 31 approach each other on the chain shaft, the operator rotates the first motor 34 through the main control platform. At this time, the gear 33 inside the connecting shell 3 rotates and meshes with the rack 32 on the steel beam 11, thereby making the connecting shell 3 fine-tuned. The grippers 31 fixedly connected to the connecting shell 3 also rotate accordingly, thus making the clamping position more accurate.

[0051] Example 2

[0052] Reference Figure 5 and Figure 6Multiple support plates 4 are detachably fixed to the steel frame 1 via bolts. Each support plate 4 has multiple limiting grooves 42, the cross-section of which is dovetail-shaped. Multiple limiting blocks 43 are slidably connected within the limiting grooves 42. A sliding plate 41 is fixedly connected to the support plate 4, and the limiting blocks 43 are all fixedly connected to the sliding plate 41. The sliding plate 41 has an L-shaped cross-section and is equipped with a hook plate 413. Two hydraulic cylinders 412 are also provided on the sliding plate 41 to move the hook plate 413 up and down. The output shafts of the hydraulic cylinders 412 pass through the sliding plate 41 and are fixedly connected to the hook plate 413. A screw rod 411 is threadedly connected to the sliding plate 41, and a second motor 44 is connected to one end of the screw rod 411. The second motor 44 is fixedly connected to the support plate 4.

[0053] Reference Figure 5 and Figure 6 When the worker removes the chain shaft, the weight of the chain and chain plates increases the tension during removal. The hydraulic cylinder 412 applies an upward force to the chain or chain plate using the hook plate 413, reducing the tension between the chain plate and the chain shaft and further improving the efficiency of removing the chain shaft. When the second motor 44 starts and the screw 411 rotates, the limiting block 43, which is slidably connected within the limiting groove 42 and fixedly connected to the sliding plate 41, allows the sliding plate 41 to slide along the length of the support plate 4, thus improving the applicability of the hook plate 413.

[0054] The implementation principle of the pre-assembly / disassembly device for a large synchronous chain plate in Embodiment 2 of this application is as follows:

[0055] When the worker removes the chain shaft, the chain and chain plate have their own weight, which increases the tension during removal. The hydraulic cylinder 412 causes the hook plate 413 to provide support for the chain or chain plate, thereby reducing the tension between the chain plate and the chain shaft and further improving the efficiency of removing the chain shaft.

[0056] When the second motor 44 starts, the screw 411 rotates. Since the limiting block 43 is slidably connected in the limiting groove 42 and the limiting block 43 is fixedly connected to the sliding plate 41, the sliding plate 41 can slide along the length direction of the support plate 4, thereby improving the applicability of the hook plate 413.

[0057] Example 3

[0058] Reference Figure 7 and Figure 8A mounting plate 5 is fixedly connected to the steel frame 1. The mounting plate 5 is located in the width direction of the steel frame 1, and the cross-section of the mounting plate 5 is L-shaped. An clearance groove 53 is provided on the mounting plate 5, and an ejection assembly 6 is provided within the clearance groove 53 to push the chain shaft out a certain distance. Because the tension between the chain shaft and the chain or chain plate makes it difficult to remove the chain shaft before it is removed, the ejection mechanism allows the chain shaft to extend slightly during removal, thereby improving the efficiency of the subsequent chain shaft removal process.

[0059] Reference Figure 7 and Figure 8 The ejector assembly 6 includes an eccentric wheel 61, a connecting plate 62, an ejector shaft 63, and a first hydraulic cylinder 64. A rotating shaft 611 is fixedly connected to the eccentric wheel 61, located at the end of the eccentric wheel 61 used for ejecting the chain shaft. The eccentric wheel 61 is rotatably connected to a mounting plate 5, and an abutment plate 51 is fixedly connected to the mounting plate 5. The first hydraulic cylinder 64 is located at the end of the eccentric wheel 61 away from the rotating shaft 611, with one end hinged to the abutment plate 51 and the other end hinged to the eccentric wheel 61. A connecting plate 62 is fixedly connected to the mounting plate 5, located between the mounting plate 5 and the chain shaft. The ejector shaft 63 passes through the connecting plate 62. When the chain shaft needs to be ejected, the worker abuts the ejector shaft 63 against the end of the chain shaft to be ejected. At this time, one end of the ejector shaft 63 abuts against the chain shaft, and the other end abuts against the eccentric wheel 61. Then the first hydraulic cylinder 64 is activated, causing the eccentric wheel 61 to rotate along the shaft 611, which makes it easier for the ejector shaft 63 to eject the chain shaft a certain distance, facilitating the subsequent extraction of the chain shaft.

[0060] Reference Figure 6 and Figure 8 An abutment ring plate 632 is fixedly connected to one end of the ejector shaft 63 near the eccentric wheel 61. A reset element 631, which is a spring, is sleeved on the ejector shaft 63. The spring is located between the connecting plate 62 and the abutment ring plate 632, with one end of the spring abutting against the connecting plate 62 and the other end abutting against the abutment ring plate 632. When the ejector shaft 63 ejects the chain shaft, the spring is compressed. When the first hydraulic cylinder 64 retracts the output shaft, the eccentric wheel 61 returns to its initial position. At this time, under the action of the spring reset, the ejector shaft 63 is reset, thereby improving the efficiency of the ejector assembly 6.

[0061] Reference Figure 6 and Figure 8Multiple reinforcing ribs 52 are provided between the abutment plate 51 and the mounting plate 5. When the first hydraulic cylinder 64 is driven, the shear force between the abutment plate 51 and the mounting plate 5 increases, which may cause the abutment plate 51 to fall off the mounting plate 5. Therefore, the multiple reinforcing ribs 52 not only improve the shear strength between the abutment plate 51 and the mounting plate 5, but also improve the stability of the connection between the mounting plate 5 and the abutment plate 51, thereby reducing the possibility of the abutment plate 51 falling off the mounting plate 5 and ensuring the service life of the ejection assembly 6.

[0062] The implementation principle of the pre-assembly / disassembly device for a large synchronous chain plate in Embodiment 3 of this application is as follows:

[0063] When it is necessary to extract the chain shaft, the top end of the ejector shaft 63 is fixed to the chain shaft. At this time, the first hydraulic cylinder 64 is activated. The output shaft of the first hydraulic cylinder 64 pushes the eccentric wheel 61, causing it to rotate on the rotating plate. Since the position of the rotating shaft 611 is far away from the end of the eccentric wheel 61 ejected by the output shaft of the first hydraulic cylinder 64, the ejector assembly 6 can more easily eject the chain shaft a certain distance.

[0064] When the ejector shaft 63 ejects the chain shaft, the spring is compressed. When the first hydraulic cylinder 64 retracts the output shaft, the eccentric wheel 61 returns to its initial position. At this time, under the action of the spring reset, the ejector shaft 63 is reset, thereby improving the efficiency of the ejector assembly 6.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-assembly / disassembly device for large synchronous chain plates, characterized in that, Includes a steel frame (1), on which two steel beams (11) are slidably connected. Each of the two steel beams (11) is provided with a clamp (31). Multiple clamps (31) are provided along the length of the steel beams (11). A driving member (111) is provided between the two steel beams (11) to bring them closer or further apart. The top of the steel frame (1) is detachably fixedly connected to multiple support plates (4). The support plates (4) are provided with sliding plates (41). The sliding plates (41) abut against the support plates (4). The sliding plates (41) are provided with multiple hydraulic cylinders (412). The drive shaft of the hydraulic cylinders (412) passes through the sliding plates (41). The sliding plates (41) are provided with hook plates (413). The top of the hook plates (413) is fixedly connected to the drive shaft of the hydraulic cylinders (412). A limiting groove (42) is provided on the support plate (4), and a limiting block (43) is slidably connected in the limiting groove (42). The limiting block (43) is fixedly connected to the sliding plate (41), and a screw (411) is threadedly connected to the sliding plate (41). A second motor (44) that drives the screw (411) to rotate is fixedly connected to the support plate (4). A mounting plate (5) is fixedly connected to the steel frame (1). The mounting plate (5) has an L-shaped cross section and is located in the width direction of the steel frame (1). The mounting plate (5) is provided with an ejection assembly (6) and an obstacle groove (53) for placing the ejection mechanism is provided on the mounting plate (5). The ejection mechanism includes an eccentric wheel (61), a connecting plate (62), an ejection shaft (63), and a first hydraulic cylinder (64). A rotating shaft (611) is rotatably connected to the mounting plate (5), and the rotating shaft (611) is fixedly connected to the eccentric wheel (61). A connecting plate (62) is provided on the side of the mounting plate (5) near the steel frame (1), and the connecting plate (62) is fixedly connected to the mounting plate (5). The ejection shaft (63) passes through the connecting plate (62). An abutment plate (51) is fixedly connected to the mounting plate (5). One end of the first hydraulic cylinder (64) is hinged to the abutment plate (51), and the other end is hinged to the eccentric wheel (61) and away from the rotating shaft (611).

2. The pre-assembly / disassembly device for a large synchronous chain plate according to claim 1, characterized in that, The steel frame (1) has two crane motor roller groups (12) slidably connected along its width direction, and the crane motor roller groups (12) are symmetrically arranged along the center line of the length direction of the steel frame (1). Both ends of the steel beam (11) are fixedly connected to the crane motor roller groups (12).

3. The pre-assembly / disassembly device for a large synchronous chain plate according to claim 1, characterized in that, An adjustment assembly (2) is fixedly connected to the steel frame (1). The adjustment assembly (2) includes a hydraulic telescopic column (21) and a caster wheel (22). One end of the hydraulic telescopic column (21) is fixedly connected to the steel frame (1), and the other end is fixedly connected to the caster wheel (22).

4. The pre-assembly and disassembly device for a large synchronous chain plate according to claim 1, characterized in that, Multiple connecting shells (3) are slidably connected to the steel beam (11), and the gripper (31) is fixedly connected to the connecting shell (3). The connecting shell (3) and the gripper (31) correspond one-to-one. Multiple racks (32) are fixedly connected to the steel beam (11). A gear (33) that meshes with the rack (32) is rotatably connected inside the connecting shell (3). A first motor (34) that drives the gear (33) to rotate is provided on the connecting shell (3).

5. A pre-assembly / disassembly device for a large synchronous chain plate according to claim 1, characterized in that, The ejector shaft (63) is fixedly connected to an abutment ring plate (632) on the side near the eccentric wheel (61). A reset member (631) is coaxially sleeved on the ejector shaft (63). The reset member (631) is located between the connecting plate (62) and the abutment ring plate (632). One end of the reset member (631) abuts against the connecting plate (62), and the other end abuts against the abutment ring plate (632).

6. The pre-assembly / disassembly device for a large synchronous chain plate according to claim 1, characterized in that, Multiple reinforcing ribs (52) are fixedly connected between the abutment plate (51) and the mounting plate (5).

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