Gear meshing adjustment method and adjustment system for heavy-duty multi-stage vertical shaft eccentric sleeve gearbox

Abstract

A tooth meshing adjustment method and adjustment system for a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox, the adjustment steps are: adjusting the gearbox to a predetermined height through a box adjustment component; adjusting the axial position of each gear to be adjusted to a predetermined position through each axial adjustment device; starting the driving device on the input shaft, applying a radial load force to the gear shaft to be adjusted through a load device connected to the gear shaft to be adjusted adjacent to the input shaft; the driving device stops after working for a predetermined time, and detects the tooth meshing condition with the gear to be adjusted; when the tooth meshing is unqualified, adjusting the eccentric sleeve on the gear shaft to be adjusted, and repeating the previous step; when the tooth meshing is qualified, adjusting the tooth meshing condition of each adjacent gear to be adjusted in turn according to the above steps, and when the tooth meshing is unqualified, repeating the previous step; until all the gears to be adjusted are adjusted. The present invention can improve the accuracy of adjustment, optimize the operation process, appropriately reduce the adjustment workload, and the adjustment system structure design is simple and ingenious.

Description

Technical Field

[0001] The invention relates to the technical field of tooth meshing adjustment of a heavy-duty multi-stage gearbox, and in particular to a tooth meshing adjustment method and an adjustment system for a gearbox with a heavy-duty multi-stage vertical gear shaft and adjusted by an eccentric sleeve. Background Art

[0002] When assembling the gearbox, the contact position, contact area and meshing clearance of the teeth must be adjusted to meet the design requirements. If the design requirements are not met, it will be difficult to form an oil film between the tooth surfaces, which will cause noise and abnormal vibration during operation, aggravate tooth surface wear, and even lead to accidents such as tooth breakage.

[0003] Adjusting the gearbox's tooth meshing is a tedious task that often requires repeated adjustments, and the workload is very large, especially for some heavy-duty multi-stage vertical shaft eccentric sleeve gearboxes. Due to the large size and heavy weight of the gear shaft, the disassembly, adjustment, and assembly during the adjustment process are very difficult, and it is very difficult to adjust once.

[0004] Therefore, how to design a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox tooth meshing adjustment method and adjustment system that can reduce workload and improve adjustment accuracy is a topic that the inventor has devoted himself to studying. Summary of the invention

[0005] The purpose of the present invention is to provide a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox tooth meshing adjustment method and adjustment system, which can not only improve the accuracy of adjustment, but also optimize the operation process and appropriately reduce the workload of adjustment. The structural design of the adjustment system is simple and ingenious.

[0006] In order to achieve the above object, the present invention provides a method for adjusting the tooth meshing of a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox, which comprises the following steps:

[0007] (1) The gear box is adjusted to a predetermined height by means of a box adjustment assembly, and the gear box is placed horizontally;

[0008] (2) adjusting the axial position of each gear to be adjusted to a predetermined position by means of an axial adjustment device installed on the shaft of each gear to be adjusted;

[0009] (3) starting the driving device on the input shaft of the gearbox and applying a radial load force to the gear shaft to be adjusted through a load device connected to the gear shaft to be adjusted adjacent to the input shaft;

[0010] (4) after the driving device has worked for a predetermined time, the driving device stops working and detects the meshing condition of the gear to be adjusted that is meshed with the gear on the input shaft;

[0011] (5) When the tooth meshing is unqualified, adjust the eccentric sleeve on the gear shaft to be adjusted and repeat step (4);

[0012] (6) When the tooth meshing is qualified, adjust the tooth meshing of each adjacent gear to be adjusted in sequence according to steps (3) and (4); when the tooth meshing is unqualified, repeat step (5);

[0013] (7) Continue until all gears to be adjusted are adjusted.

[0014] Preferably, in step (1), the height of the gear box is roughly adjusted by the square box of the box adjusting assembly, and then the gear box is finely adjusted to a predetermined height by inserting a plurality of adjustment blocks of the box adjusting assembly between the square box and the gear box, and the relative flatness of the upper surface of the gear box is adjusted to a predetermined requirement.

[0015] Preferably, the relative flatness adjustment tolerance of the upper surface of the gear box body is within ±0.50 mm.

[0016] Preferably, the axial positioning device on the first gear shaft to be adjusted in step (2) is a lightweight axial positioning device, and the gear to be adjusted is moved to a predetermined axial position by adjusting a first lead screw of the lightweight axial positioning device.

[0017] A tooth meshing adjustment system for a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox, comprising:

[0018] Driving device: used to provide power to the input shaft of the gear box, and the driving device is connected to the input shaft;

[0019] Box adjustment assembly: used to adjust the height and flatness of the gear box, and is arranged under the gear box;

[0020] Axial position adjustment device: used to adjust the axial position of the gear to be adjusted, provided in multiple pieces, and respectively installed on the shaft of each gear to be adjusted;

[0021] Loading devices: multiple, respectively used to apply radial load force to each gear shaft to be adjusted, respectively installed between each axial adjustment device and the corresponding connecting piles set on the gear box body, and the connecting piles are set in the direction of the load force on the gear shaft to be adjusted.

[0022] Preferably, the driving device comprises an electric motor, and the electric motor is connected to a frequency conversion cabinet.

[0023] Preferably, the box adjustment assembly includes a square box and a plurality of adjustment blocks, the square box is supported below the gear box, the square box is connected to a power mechanism, and the plurality of adjustment blocks are inserted between the square box and the gear box.

[0024] Preferably, the lightweight axial positioning device includes an internal and external threaded sleeve screwed to the upper end of the gear shaft to be adjusted, a first screw screwed to the internal thread of the internal and external threaded sleeve, a first locking nut screwed to the first screw at the upper end of the internal and external threaded sleeve, and two second screws screwed to the gear box body, the upper parts of the first screw and the two second screws pass through a pressure plate, the pressure plate is fixed to the two second screws through an adjustable component, the first screw is pressed on the pressure plate through a thrust ball bearing and a second locking nut, the load device is connected between the first screw and the connecting pile on the box body, and the connecting pile is arranged in the direction of the load force on the gear shaft to be adjusted.

[0025] Preferably, the adjustable component includes four third locking nuts threaded on two of the second lead screws, every two of the third locking nuts are locked on one of the second lead screws, and the two third locking nuts are located on the upper and lower sides of the pressure plate.

[0026] Preferably, the heavyweight axial positioning device includes a bracket, a power mechanism is connected to the bracket, two tooling pull pins are provided on the power mechanism, a thrust ball bearing is provided between one of the tooling pull pins and the power mechanism, the gear shaft to be adjusted is connected between the two tooling pull pins, the load device is connected between the tooling pull pin and the connecting pile on the box body, and the connecting pile is set in the direction of the load force on the gear shaft to be adjusted.

[0027] Preferably, the tooling pull pin includes a pull pin and a connecting plate, the pull pin is a drum-shaped pin with an inwardly recessed outer side, the connecting plate is connected to one end of the pull pin, the connecting plate is fixed to the gear shaft to be adjusted by bolts, and one end of the load device is connected to the pull pin.

[0028] Preferably, the load device includes a hand chain hoist, a chain connected to both ends of the hand chain hoist and a hook connected to the outer end of one of the chains, the hook is hooked on the first screw, and the outer end of the other end of the chain is connected and fixed to the connecting pile, or the hook is hooked on the tooling pull pin, and the outer end of the other end of the chain is connected and fixed to the connecting pile.

[0029] Preferably, the connecting piles are made of U-shaped channel steel, and the connecting piles are welded to the box body.

[0030] After adopting the above scheme, the tooth meshing adjustment method of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox of the present invention can be adjusted under the simulation of the actual working conditions of the gearbox, which shortens the tooth meshing adjustment time between the gears to be adjusted, reduces the workload, and can accurately adjust the tooth meshing contact position, contact area and meshing clearance of each gear to be adjusted to the design standard, optimizes the operation process, and improves the accuracy of adjustment. The accuracy of the adjustment position can not only ensure the accuracy of the later adjustment, but also greatly reduce the adjustment and detection work during the adjustment period, and the structural design of the adjustment system is simple and ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox tooth meshing adjustment system of the present invention;

[0032] Figure 2 It is a schematic diagram of the connection structure between the driving device and the gear box of the heavy-duty multi-stage vertical shaft eccentric sleeve gear box tooth meshing adjustment system of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the box adjustment assembly of the gear meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gear box of the present invention;

[0034] Figure 4 It is a schematic diagram of the top view of multiple gear shafts of an embodiment of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox tooth meshing adjustment system of the present invention;

[0035] Figure 5 It is a structural schematic diagram of a lightweight axial positioning device of a gear meshing adjustment system of a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox of the present invention;

[0036] Figure 6 It is a structural schematic diagram of a heavyweight axial positioning device of a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox tooth meshing adjustment system of the present invention. DETAILED DESCRIPTION

[0037] The present invention is described below based on the embodiments shown in the accompanying drawings. The embodiments disclosed this time can be considered to be illustrative in all aspects and not restrictive. The scope of the present invention is not limited by the description of the following embodiments, but is only shown by the scope of the claims, and includes all modifications with the same meaning as the scope of the claims and within the scope of the claims.

[0038] The following describes the structure of the tooth meshing adjustment method and adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox of the present invention in conjunction with specific embodiments.

[0039] like Figure 1 The three-dimensional structural diagram of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox tooth meshing adjustment system of the present invention is shown, which includes:

[0040] Drive device: used to provide power to the input shaft 2 of the gearbox 1, refer to Figure 2 As shown, the drive device is connected to the input shaft 2. The drive device of this embodiment includes a motor 3. The motor 3 is preferably a three-phase asynchronous motor. The motor 3 is connected to the frequency conversion cabinet 4. The frequency conversion cabinet 4 is connected to the power distribution cabinet. The frequency converter 4 is used to control the motor 3. The input shaft 2 is connected to the motor 3 through a transmission belt 7. The motor 3 of the drive device can provide different and uniform speeds in both forward and reverse directions to provide simulated working conditions.

[0041] Box adjustment component: used to adjust the height and flatness of the gear box 1, set under the gear box 1, refer to Figure 3 As shown, the box adjustment assembly includes a square box 5 for coarsely adjusting the height of the gear box 1 and a plurality of adjustment blocks 6 for finely adjusting the height and flatness of the gear box 1. The plurality of adjustment blocks 6 use gaskets, and the square box 5 is supported under the box body of the gear box 1, so that the gear box 1 is adjusted to a predetermined height. In this embodiment, the square box 5 raises the gear box 1 by 1.6 meters, and a plurality of adjustment blocks 6 are inserted between the square box 5 and the gear box 1. It not only further adjusts the placement height of the gear box 1, but also is used to adjust the reference flatness of the gear box 1. It finally adjusts the relative flatness of the four measuring reference surfaces on the upper surface of the gear box 1 to the adjustment requirements, and the flatness tolerance is within 0.50 mm, so as to facilitate people to enter and exit and work under the gear box 1. The appropriate adjustment position can meet the requirements of adjustment accuracy and is very convenient for later adjustment and detection work;

[0042] Axial position adjustment device: used to adjust the axial position of the gear to be adjusted, which is provided in multiple numbers. In this embodiment, five are provided, which are respectively installed on the shafts of the gears to be adjusted. Figure 2 and Figure 4 As shown, the five gear shafts to be adjusted in this embodiment are S2 gear shaft 8, S3 gear shaft 9, S4 gear shaft 10, S5 gear shaft 11 and S6 gear shaft 12 arranged in sequence, the gears on adjacent gear shafts are meshed, S2 gear shaft 8 is adjacent to input shaft 2 and the gears on the two shafts are meshed, and the axial position device installed on S2 gear shaft 8 in this embodiment adopts a lightweight axial position adjustment device 13, refer to Figure 5As shown, the lightweight axial positioning device 13 includes an internal and external threaded sleeve 14 screwed to the upper end of the S2 gear shaft 8, a first lead screw 15 screwed to the internal thread of the internal and external threaded sleeve 14, a first locking nut 16 screwed to the first lead screw 15 and located at the upper end of the internal and external threaded sleeve, and two second lead screws 17 screwed to the housing of the gear box 1. The upper parts of the first lead screw 15 and the two second lead screws 17 pass through a pressure plate 18. In this embodiment, the pressure plate 18 is U-shaped. The first lead screw 15 and the two second lead screws 17 pass through the open groove on the pressure plate 18. The first lead screw is pressed on the pressure plate 18 through a thrust ball bearing 19 and a second locking nut 20. The pressure plate 18 is fixed to the two second lead screws 17 through an adjustable component. The adjustable component includes four third locking nuts 21 screwed to the two second lead screws 17, and every two third locking nuts 21 are locked on one second lead screw 17, and the two third locking nuts 21 are located on the upper and lower sides of the pressure plate 18. The position of the S2 gear shaft 8 can be axially adjusted by rotating the first screw 15, and the position of the first screw 15 is fixed by the first locking nut 16. The first screw 15 is connected to the connecting pile 22 provided on the gear box 1 body through a load device. In this embodiment, seven connecting piles 22 are provided. Each connecting pile 22 is made of U-shaped channel steel and is welded to the housing. The connecting pile 22 is provided in the direction of the load force on the S2 gear shaft 8. The axial positioning devices installed on the S3 gear shaft 9, S4 gear shaft 10, S5 gear shaft 11 and S6 gear shaft 12 of this embodiment all adopt a heavyweight axial positioning device 23, refer to Figure 6 As shown, the heavyweight axial positioning device 23 includes a bracket 24, and a power mechanism is connected to the top of the bracket 24. In this embodiment, the power mechanism adopts a hydraulic jack 25, and two tooling pull pins 26 are arranged on the top of the hydraulic jack 25. The gear shaft to be measured is connected between the two tooling pull pins 26. The tooling pull pin 26 includes a pull pin 27 and a connecting plate 28. The pull pin 27 is a waist drum-shaped pin with an inwardly concave outer side surface. The connecting plate 28 is connected to the upper end or the lower end of the pull pin 27. The two connecting plates 28 is fixed to the gear shaft to be adjusted (S3 gear shaft 9, S4 gear shaft 10, S5 gear shaft 11, S6 gear shaft 12) by bolts, a thrust ball bearing 29 is provided between the pull pin 27 and the hydraulic jack 25, and the pull pin 27 is connected to the corresponding connecting pile 22 on the box body through a load device, and the connecting pile 22 is provided in the direction of the load force on the gear shaft to be adjusted (S3 gear shaft 9, S4 gear shaft 10, S5 gear shaft 11, S6 gear shaft 12);

[0043] Loading device: multiple loads are provided, and five loads are provided in this embodiment, which are used to apply radial loads to the gear shafts to be adjusted (S2 gear shaft 8, S3 gear shaft 9, S4 gear shaft 10, S5 gear shaft 11, S6 gear shaft 12). Each load device is installed between each axial positioning device and the corresponding connecting pile 22 provided on the gear box 1, that is, between the lightweight axial positioning device 13 and the corresponding connecting pile 22, and between the five heavyweight axial positioning devices 23 and the corresponding connecting pile 22. The loading device includes a hand chain hoist 30, a chain 31 connected to both ends of the hand chain hoist 30, and a hook 32 connected to the outer end of a chain 31. The hand chain hoist 30 can provide a simulated load, so that the load can act on the S2 gear shaft 8 or the S3 gear shaft 9 or the S4 gear shaft 10 or the S5 gear shaft 11 or the S6 gear shaft 12 stably and continuously. The hook 32 for connecting the load device of the lightweight axial positioning device 13 is hooked on the first screw 15, and the outer end of the chain 31 at the other end is connected and fixed to the connecting pile 22. The hook 32 for connecting the load device of the heavyweight axial positioning device 23 is hooked on the pull pin 27 of the tooling pull pin, and the outer end of the chain 31 at the other end is connected and fixed to the corresponding connecting pile 22.

[0044] The tooth meshing adjustment method of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox of the present invention comprises the following steps:

[0045] (1) The gearbox 1 is adjusted to a predetermined height by the box adjusting assembly, and the gearbox 1 is placed horizontally. Specifically, the gearbox 1 is roughly adjusted to a predetermined height by the square box 5 of the box adjusting assembly. In this embodiment, the gearbox 1 is raised by 1.6 meters, and then a plurality of adjustment blocks 6 of the box adjusting assembly are inserted between the square box 5 and the box body of the gearbox 1 to finely adjust the gearbox 1 to a predetermined height. Finally, the relative flatness of the four measuring reference surfaces on the upper surface of the gearbox 1 is adjusted to the adjustment requirement, and the flatness tolerance is within 0.50 mm, so that people can easily enter and work under the gearbox 1.

[0046] (2) The axial position of each gear to be adjusted is adjusted to a predetermined position by the axial adjustment device installed on each gear shaft to be adjusted, that is, the axial position of the gear to be adjusted on the S2 gear shaft 8 is adjusted to a predetermined position by adjusting the lightweight axial adjustment device on the S2 gear shaft 8, and the axial position can be adjusted by rotating the first screw 15. The axial position of the gear to be adjusted on each shaft is adjusted to a predetermined position by adjusting the heavyweight axial adjustment devices on the S3 gear shaft 9, the S4 gear shaft 10, the S5 gear shaft 11 and the S6 gear shaft 12, and the axial position can be adjusted by lifting and lowering the hydraulic jack 25;

[0047] (3) Start the motor 3 on the input shaft 2, and at the same time, apply a radial load force to the S2 gear shaft 8 through the load device connected to the S2 gear shaft 8. Here, the direction and magnitude of the radial load force of the S2 gear shaft 8 are determined when the gear box 1 leaves the factory, and can be directly used. The radial load forces applied to the other S3 gear shaft 9, S4 gear shaft 10, S5 gear shaft 11 and S6 gear shaft 12 are also determined when the gear box 1 leaves the factory;

[0048] (4) After the motor 3 of the driving device has worked for a predetermined time, it stops working and detects the meshing condition of the teeth of the gear to be tested on the gear shaft 8 of S2 and the meshing gear. The meshing test can be performed by coloring the teeth of the gear to be tested and detecting the coloring condition of the teeth on the meshing gear;

[0049] (5) When the tooth meshing is unqualified, adjust the eccentric sleeve on the S2 gear shaft 8 and repeat step (4);

[0050] (6) When the tooth meshing is qualified, adjust the tooth meshing of the gears to be tested on the S3 gear shaft 9, the S4 gear shaft 10, the S5 gear shaft 11 and the S6 gear shaft 12 in sequence according to steps (3) and (4). If the tooth meshing is unqualified, repeat step (5);

[0051] (7) Continue until all gears to be adjusted are adjusted.

[0052] The tooth meshing adjustment method of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox of the present invention can be adjusted under the simulated real working conditions of the gearbox 1, which shortens the adjustment time of the tooth meshing between the gears to be adjusted, reduces the workload, and can accurately adjust the tooth meshing contact position, contact area and meshing clearance of each gear to be adjusted to the design standard, optimizes the operation process, and improves the accuracy of adjustment. The accuracy of the adjustment position can not only ensure the accuracy of the later adjustment, but also greatly reduce the adjustment and detection work during the adjustment period. The structural design of the adjustment system is simple and ingenious.

[0053] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include undisclosed common knowledge or customary techniques in the art. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

[0054] It should be understood that the present invention is not limited to the embodiments, methods, structures, and precise structures shown in the drawings described above, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for adjusting the tooth engagement of a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox, characterized in that: The steps include: (1) The gear box is adjusted to a predetermined height by means of a box adjustment assembly, and the gear box is placed horizontally; (2) adjusting the axial position of each gear to be adjusted to a predetermined position by means of an axial adjustment device installed on the shaft of each gear to be adjusted; (3) starting the driving device on the input shaft of the gearbox and applying a radial load force to the gear shaft to be adjusted through a load device connected to the gear shaft to be adjusted adjacent to the input shaft; (4) after the driving device has worked for a predetermined time, the driving device stops working and detects the meshing condition of the gear to be adjusted that is meshed with the gear on the input shaft; (5) When the tooth meshing is unqualified, adjust the eccentric sleeve on the gear shaft to be adjusted and repeat step (4); (6) When the tooth meshing is qualified, adjust the tooth meshing of each adjacent gear to be adjusted in sequence according to steps (3) and (4); when the tooth meshing is unqualified, repeat step (5); (7) Until all gears to be adjusted are adjusted; The axial positioning device on the first gear shaft to be adjusted in step (2) adopts a lightweight axial positioning device, which includes an internal and external threaded sleeve screwed to the upper end of the gear shaft to be adjusted, a first lead screw screwed to the internal thread of the internal and external threaded sleeve, a first locking nut screwed to the first lead screw and located at the upper end of the internal and external threaded sleeve, and two second lead screws screwed to the gear box body, the upper parts of the first lead screw and the two second lead screws pass through a pressure plate, the pressure plate is fixed to the two second lead screws through an adjustable component, and the first lead screw is pressed against the pressure plate through a thrust ball bearing and a second locking nut; the gear to be adjusted is moved to a predetermined axial position by adjusting the first lead screw of the lightweight axial positioning device; The heavyweight axial positioning device comprises a bracket, a power mechanism is connected to the bracket, two tooling pull pins are arranged on the power mechanism, a thrust ball bearing is arranged between one of the tooling pull pins and the power mechanism, a gear shaft to be adjusted is connected between the two tooling pull pins, the load device is connected between the tooling pull pins and a connecting pile on the box body, and the connecting pile is arranged in the direction of the load force on the gear shaft to be adjusted; The tooling pull pin comprises a pull pin and a connecting plate, and the pull pin is a waist drum-shaped pin with an outer side surface concave inwards.

2. The tooth meshing adjustment method of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 1 is characterized in that: In the step (1), the height of the gear box is roughly adjusted by the square box of the box adjustment assembly, and then the gear box is finely adjusted to a predetermined height by inserting a plurality of adjustment blocks of the box adjustment assembly between the square box and the gear box, and the relative flatness of the upper surface of the gear box is adjusted to a predetermined requirement.

3. The tooth meshing adjustment method of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 2 is characterized in that: The relative flatness adjustment tolerance of the upper surface of the gear box body is within ±0.50mm.

4. A tooth meshing adjustment system for a heavy-duty multi-stage vertical shaft eccentric sleeve gearbox, characterized in that: include: Driving device: used to provide power to the input shaft of the gear box, and the driving device is connected to the input shaft; Box adjustment assembly: used to adjust the height and flatness of the gear box, and is arranged under the gear box; Axial positioning device: used to adjust the axial position of the gear to be adjusted, and is provided in multiple pieces, including a lightweight axial positioning device and a heavyweight axial positioning device, which are respectively installed on the shaft of each gear to be adjusted; Loading devices: multiple, respectively used to apply radial load force to each gear shaft to be adjusted, respectively installed between each axial adjustment device and the corresponding connecting piles provided on the gear box body, and the connecting piles are provided in the direction of the load force on the gear shaft to be adjusted; The lightweight axial positioning device includes an internal and external threaded sleeve screwed to the upper end of the gear shaft to be adjusted, a first lead screw screwed to the internal thread of the internal and external threaded sleeve, a first locking nut screwed to the first lead screw and located at the upper end of the internal and external threaded sleeve, and two second lead screws screwed to the gear box body, the upper parts of the first lead screw and the two second lead screws pass through a pressure plate, the pressure plate is fixed to the two second lead screws through an adjustable component, the first lead screw is pressed on the pressure plate through a thrust ball bearing and a second locking nut, the load device is connected between the first lead screw and the connecting pile on the box body, and the connecting pile is arranged in the direction of the load force on the gear shaft to be adjusted; The heavyweight axial positioning device comprises a bracket, a power mechanism is connected to the bracket, two tooling pull pins are arranged on the power mechanism, a thrust ball bearing is arranged between one of the tooling pull pins and the power mechanism, a gear shaft to be adjusted is connected between the two tooling pull pins, the load device is connected between the tooling pull pins and a connecting pile on the box body, and the connecting pile is arranged in the direction of the load force on the gear shaft to be adjusted; The tooling pull pin comprises a pull pin and a connecting plate, and the pull pin is a waist drum-shaped pin with an outer side surface concave inwards.

5. The tooth meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 4 is characterized in that: The driving device comprises an electric motor, and the electric motor is connected to a frequency conversion cabinet.

6. The tooth meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 4, characterized in that: The box body adjustment assembly comprises a square box and a plurality of adjustment blocks. The square box is supported below the gear box. The square box is connected to a power mechanism. The plurality of adjustment blocks are inserted between the square box and the gear box.

7. The tooth meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 4, characterized in that: The adjustable component includes four third locking nuts threaded on two of the second lead screws, each two of the third locking nuts are locked on one of the second lead screws, and two of the third locking nuts are located on the upper and lower sides of the pressure plate.

8. The tooth meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 4, characterized in that: The connecting plate is connected to one end of the pull pin, the connecting plate is fixed to the gear shaft to be adjusted by bolts, and one end of the load device is connected to the pull pin.

9. The tooth meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 4, characterized in that: The load device includes a hand chain hoist, a chain connected to both ends of the hand chain hoist, and a hook connected to the outer end of one of the chains, the hook is hooked on the first screw, and the outer end of the other end of the chain is connected and fixed to the connecting pile, or the hook is hooked on the tooling pull pin, and the outer end of the other end of the chain is connected and fixed to the connecting pile.

10. The tooth meshing adjustment system of the heavy-duty multi-stage vertical shaft eccentric sleeve gearbox according to claim 9, characterized in that: The connecting piles are made of U-shaped channel steel and are welded to the box body.

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