Gearbox oil seal mounting structure

Abstract

The utility model belongs to the technical field of wind power equipment discloses a gear box oil seal mounting structure, it includes push sleeve and compression positioning assembly. Push sleeve is sleeved in the wheel axle outside gear box, includes a plurality of first and last connected arc piece, the two ends of arc piece on the circumference respectively extend to form the tenon, the tenon of adjacent two arc pieces overlaps each other, the end of tenon projects to form the tenon, the end of arc piece is equipped with the mortise that cooperates with tenon insertion, the overlapping plane of tenon is equipped with wedge dowel groove, the wedge dowel groove on adjacent two arc pieces is relatively buckled to form the wedge dowel hole, and the connecting wedge dowel is inserted in the wedge dowel hole;Compression positioning assembly includes guide post and pressing plate, and the guide post is set up in the outer circumference of push sleeve and is detachably connected along the axial direction in the through cover, and the pressing plate moves along the guide post towards the through cover to push the push sleeve and install the oil seal on the through cover. The gear box oil seal mounting structure can ensure the installation precision of the framework oil seal, save the replacement cost and time, and improve the installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment technology, and in particular to a gearbox oil seal installation structure. Background Technology

[0002] The installation quality of large-size skeleton oil seals (applicable to both inner and outer skeletons, with an inner diameter typically >1m) in wind turbine gearboxes directly determines the sealing performance and service life of the gearbox.

[0003] Existing oil seal installation fixtures typically come in two structural forms: integrated and detachable. Integrated fixtures use a single metal sleeve, which cannot pass through the maintenance channel inside the wind turbine tower. On-site maintenance requires disassembling the gearbox and transporting it to the ground for installation, resulting in excessively long maintenance times and increased labor costs. Detachable fixtures use bolted connections, snap-fit ​​connections, or mortise and tenon structures for assembly. However, bolted connections are prone to rust and jamming, and disassembly is time-consuming; snap-fit ​​connections require specialized tools, and the snaps are easily worn, resulting in poor reusability; mortise and tenon structures are prone to jamming during disassembly, and forceful hammering can easily damage the fixture. Furthermore, oil seal installation is mostly done manually by hammering, resulting in insufficient installation precision and protection, which not only easily damages the oil seal but also fails to meet usage requirements.

[0004] Therefore, there is an urgent need for a gearbox oil seal mounting structure to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a gearbox oil seal installation structure that can ensure the installation accuracy of the skeleton oil seal, save replacement costs and time, and improve installation efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The gearbox oil seal mounting structure includes:

[0008] A push sleeve is fitted onto the outer side of the gearbox axle. The push sleeve includes multiple arc-shaped components connected end to end. Each arc-shaped component extends to form a tenon at both ends in the circumferential direction. The tenons of two adjacent arc-shaped components overlap each other. The ends of the tenons protrude to form tenons. The ends of the arc-shaped components also have mortises that engage with the tenons. A wedge groove is formed on the overlapping plane of the tenons. The wedge groove penetrates the tenon radially. The wedge grooves of two adjacent arc-shaped components interlock to form a wedge hole. A connecting wedge is inserted into the wedge hole.

[0009] The clamping and positioning assembly includes a guide post and a pressure plate. The guide post is disposed on the outer periphery of the push sleeve and is detachably connected to the cover of the gearbox along the axial direction. The pressure plate can move along the guide post toward the cover to push the push sleeve to install the oil seal on the cover.

[0010] Optionally, the push sleeve further includes a disassembly wedge, the projection of which falls within the projection range of the connecting wedge in the axial direction, and the disassembly wedge can be inserted into the wedge hole from the inside of the push sleeve to push the connecting wedge out of the wedge hole.

[0011] Optionally, the connecting wedge has a polygonal cross-sectional shape, the disassembly wedge has a circular cross-sectional shape, and the wedge hole includes a first hole segment and a second hole segment that are connected together. The connecting wedge can be inserted into the first hole segment, and the disassembly wedge can be inserted into the second hole segment.

[0012] Optionally, the connecting wedge and the wedge hole are transitionally fitted.

[0013] Optionally, the end of the push sleeve that abuts against the oil seal is a pressing end, and the outer periphery of the pressing end is provided with a chamfer.

[0014] Optionally, a buffer gasket is provided on the end face of the end of the push sleeve that abuts against the oil seal.

[0015] Optionally, the guide post includes a first threaded segment, a limiting platform stage, and a second threaded segment connected in sequence. The diameters of the first threaded segment and the second threaded segment are both smaller than the diameter of the limiting platform stage. The first threaded segment is threadedly connected to the lifting hole of the cover. The pressure plate is sleeved on the second threaded segment. The end of the pressure plate away from the second threaded segment abuts against the push sleeve. The pressure plate can move axially along the second threaded segment to drive the push sleeve to move.

[0016] Optionally, the clamping and positioning assembly further includes a clamping nut, which is threadedly connected to the second threaded section to press the pressure plate against the limiting stage.

[0017] Optionally, the clamping and positioning assembly further includes a torque drive component, the output end of which is connected to the clamping nut for driving the clamping nut to rotate around the second threaded section.

[0018] Optionally, multiple clamping and positioning components are provided, and the multiple clamping and positioning components are arranged at intervals along the circumference of the push sleeve.

[0019] The beneficial effects of this utility model are:

[0020] The gearbox oil seal installation structure provided by this utility model includes a push sleeve and a clamping and positioning assembly. The push sleeve comprises multiple arc-shaped components connected end-to-end. Each arc-shaped component extends at both ends in the circumferential direction to form a tenon. The tenons of two adjacent arc-shaped components overlap, with the ends of the tenons protruding to form tenons. The ends of the arc-shaped components also have mortises that engage with the tenons. Wedge grooves are formed on the overlapping planes of the tenons, penetrating the tenons radially. The wedge grooves on the tenons of two adjacent arc-shaped components interlock to form wedge holes, into which connecting wedges are inserted. In other words, the push sleeve is composed of multiple arc-shaped components connected by a wedge tenon structure, ensuring the structural strength of the push sleeve while facilitating disassembly. Individual arc-shaped components can more easily pass through the maintenance channel inside the tower, eliminating the need to disassemble the gearbox for oil seal replacement. This greatly improves operational convenience, saves replacement costs and time, and increases installation efficiency. Meanwhile, the push sleeve is fitted outside the wheel axle, and the pressure plate of the clamping and positioning component can move toward the through cover, thereby pushing the push sleeve to install the oil seal in the installation position of the through cover. The push sleeve can apply a pushing force throughout the entire circumference of the oil seal, which helps to ensure the installation accuracy of the skeleton oil seal. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the gearbox oil seal mounting structure provided in this embodiment of the utility model;

[0023] Figure 2 This is a cross-sectional view of the gearbox oil seal mounting structure provided in this embodiment of the utility model;

[0024] Figure 3 This is a partial enlarged view of the gearbox oil seal mounting structure provided in this embodiment of the utility model;

[0025] Figure 4 This is an exploded view of the gearbox oil seal installation structure provided in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of an arc-shaped component provided in an embodiment of this utility model.

[0027] In the picture:

[0028] 100. Axle; 200. Oil seal; 300. Through cover; 301. Lifting hole;

[0029] 1. Push sleeve; 11. Curved part; 111. Tenon; 112. Tenon; 113. Morphological groove; 114. Wedge groove; 12. Wedge hole; 13. Connecting wedge; 14. Disassembling wedge; 15. Chamfer;

[0030] 2. Clamping and positioning assembly; 21. Guide post; 211. First threaded section; 212. Limiting stage; 213. Second threaded section; 22. Pressure plate; 23. Clamping nut; 24. Torque drive component; 25. Elastic washer. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] This embodiment provides a gearbox oil seal mounting structure, which can be used for mounting the skeleton oil seal of a wind turbine gearbox. In this embodiment, the gearbox oil seal mounting structure is specifically used for mounting large-size skeleton oil seals with an inner diameter ≥1000mm in a wind turbine gearbox. Of course, this gearbox oil seal mounting structure can also be used for mounting oil seals in other gearboxes; this is not a limitation. Figure 1 and Figure 2 As shown, the gearbox oil seal mounting structure includes a push sleeve 1 and a clamping and positioning assembly 2.

[0041] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the push sleeve 1 is fitted onto the gearbox axle 100. The push sleeve 1 includes multiple arc-shaped components 11 connected end to end. Each arc-shaped component 11 extends at both ends in the circumferential direction to form a tenon 111. The tenons 111 of two adjacent arc-shaped components 11 overlap, and the ends of the tenons 111 protrude to form tenons 112. The ends of the arc-shaped components 11 also have mortises 113 that engage with the tenons 112. Wedge grooves 114 are formed on the overlapping plane of the tenons 111, penetrating the tenons 111 radially. The wedge grooves 114 on the tenons 111 of two adjacent arc-shaped components 11 interlock to form wedge holes 12, and connecting wedges 13 are inserted into the wedge holes 12. In other words, the push sleeve 1 is connected by multiple arc-shaped parts 11 through a wedge tenon structure, which not only ensures the structural strength of the push sleeve 1, but also facilitates disassembly. A single arc-shaped part 11 can more easily pass through the maintenance channel inside the tower, eliminating the need to disassemble the gearbox and replace the oil seal 200, which greatly improves the convenience of operation, saves replacement costs and time, and improves installation efficiency.

[0042] For example, the number of arc-shaped components 11 can be determined according to the size of the oil seal 200, including but not limited to 3, 4, 5 or 6. In this embodiment, the number of arc-shaped components 11 is set to 4 as an example for illustration.

[0043] In this embodiment, the arc-shaped component 11 is made of MC nylon (monomer cast nylon), which is wear-resistant and has good toughness, thus helping to improve its service life. Meanwhile, the inner surface of the push sleeve 1 is coated with a polytetrafluoroethylene coating with a thickness of 0.02-0.05 mm. This coating reduces the friction between the push sleeve 1 and the gearbox axle 100, preventing scratches on the axle 100.

[0044] Specifically, the push sleeve 1 also includes a disassembly wedge 14. The projection of the disassembly wedge 14 onto the connecting wedge 13 in the axial direction falls within the projection range of the connecting wedge 13. The disassembly wedge 14 can be inserted into the wedge hole 12 from the inside of the push sleeve 1 to push the connecting wedge 13 out of the wedge hole 12. The disassembly wedge 14 is mainly used to transmit a striking force on the inside of the push sleeve 1 after the oil seal 200 is installed, so as to push out the connecting wedge 13, thereby disassembling and separating the push sleeve 1 for subsequent transportation.

[0045] More specifically, the connecting wedge 13 has a polygonal cross-sectional shape, while the disassembly wedge 14 has a circular cross-sectional shape. The wedge hole 12 includes a first hole segment and a second hole segment connected together. The connecting wedge 13 can be inserted into the first hole segment, and the disassembly wedge 14 can be inserted into the second hole segment. In this embodiment, the connecting wedge 13 has a rectangular cross-sectional shape, and the diameter of the disassembly wedge 14 is approximately 2 / 3 of the side length of the connecting wedge 13. The diameter of the first hole segment is adapted to the cross-sectional dimensions of the connecting wedge 13, with a tolerance of H8 grade and a hole wall Ra≤1.6μm, which helps to reduce insertion and extraction resistance. Both the connecting wedge 13 and the disassembly wedge 14 are made of glass fiber modified MC nylon material with a molecular weight ≥1 million and a hardness of HB80-90, which can prevent jamming with metal and facilitate insertion and extraction.

[0046] More specifically, the connecting wedge 13 transitions into the wedge hole 12, ensuring connection stability while allowing space for disassembly. The height of the connecting wedge 13 is approximately 7 / 10 of the thickness of the push sleeve 1 to ensure reliable connection between the connecting wedge 13 and adjacent arc-shaped parts 11. The height of the disassembly wedge 14 is the same as the thickness of the push sleeve 1 to ensure that the disassembly wedge 14 can completely push the connecting wedge 13 out of the wedge hole 12.

[0047] In this embodiment, the inner diameter of the push sleeve 1 is 0.05-0.5mm larger than the diameter of the wheel axle 100 (preferably 0.1-0.3mm). With the mating clearance of the tenon 112 and the mortise 113 of 0.01-0.03mm, it can achieve pure mechanical passive self-centering and ensure coaxiality ≤0.1mm.

[0048] Reference Figure 3 The end of the push sleeve 1 that abuts against the oil seal 200 is the pressing end, and a chamfered portion 15 is provided on the outer periphery of the pressing end. The chamfered portion 15 has an angle of 20°-30° with the horizontal plane. By providing the chamfered portion 15, the thrust of the push sleeve 1 can be concentrated on the end face of the pressing end, thereby improving the pushing effect on the oil seal 200.

[0049] Preferably, a buffer gasket is provided on the end face of the push sleeve 1 that abuts against the oil seal 200. This buffer gasket can be a nitrile rubber gasket with a Shore hardness of 50-60 HA. The thickness of the buffer gasket is 3 mm, and the area covered by the buffer gasket on the end face of the pressing end is ≥95%. This buffer gasket can buffer the rigid compression of the push sleeve 1, while also enhancing the lip fit (fit ≥98%).

[0050] Continue to refer to Figures 1-4The clamping and positioning assembly 2 includes a guide post 21 and a pressure plate 22. The guide post 21 is disposed on the outer periphery of the push sleeve 1 and detachably connected axially to the through cover 300 of the gearbox. The pressure plate 22 can move along the guide post 21 toward the through cover 300 to push the push sleeve 1 to install the oil seal 200 onto the through cover 300. The pressure plate 22 of the clamping and positioning assembly 2 can apply a pushing force on the entire circumference of the oil seal 200 through the push sleeve, thereby installing the oil seal 200 in the installation position of the through cover 300. This helps to ensure the installation accuracy of the oil seal 200 and reduces the friction between the oil seal 200 and the axle 100, avoiding wear during installation and affecting its service life.

[0051] Specifically, the guide post 21 includes a first threaded section 211, a limiting step 212, and a second threaded section 213 connected in sequence. The diameters of the first threaded section 211 and the second threaded section 213 are both smaller than the diameter of the limiting step 212. The first threaded section 211 is threadedly connected to the lifting hole 301 of the cover 300. The pressure plate 22 is sleeved on the second threaded section 213, and the end of the pressure plate 22 away from the second threaded section 213 abuts against the push sleeve 1. The pressure plate 22 can move axially along the second threaded section 213 to drive the push sleeve 1 to move. The limiting step is used to limit the pressure plate 22 to prevent the pressure plate 22 from moving too far, which would cause the push sleeve to crush the oil seal 200. For example, the pressure plate 22 can be made of Q235 steel, and the central through hole of the pressure plate 22 is 0.5-1mm larger than the outer diameter of the second threaded section 213 to facilitate the sleeve of the pressure plate 22 on the outside of the second threaded section 213.

[0052] More specifically, the clamping and positioning assembly 2 also includes a clamping nut 23. The clamping nut 23 is threadedly connected to the side of the second threaded section 213 opposite to the limiting stage 212. By tightening the clamping nut 23, the movement of the clamping nut 23 on the second threaded section 213 can drive the pressure plate 22 to move.

[0053] More specifically, the clamping and positioning assembly 2 also includes a torque drive 24. The output end of the torque drive 24 is connected to the clamping nut 23 and is used to drive the clamping nut 23 to rotate around the second threaded section 213. In this embodiment, the clamping nut 23 is an external hexagonal nut, and the torque drive 24 is a torque gun with a set torque of 50-80 N·m. According to the bolt torque formula "T=K×F×d" (K=0.12-0.15, d=16mm), this torque corresponds to a pressure of 26-55 kN on the pressure plate 22, which can match the deformation resistance limit of the oil seal 200 skeleton (the skeleton deformation rate exceeds 5% when the pressure is >55 kN). When the pressure plate 22 abuts against the stepped surface of the limiting stage 212, the torque gun slips and beeps, forming double protection, eliminating the need for manual depth judgment, and making it easy to operate.

[0054] Optionally, multiple clamping and positioning components 2 are provided, and the multiple clamping and positioning components 2 are arranged at intervals along the circumference of the push sleeve 1. By providing multiple clamping and positioning components 2, the force balance of the push sleeve 1 can be ensured, thereby making the circumferential force of the oil seal 200 uniform, thus ensuring the installation accuracy and reliability of the oil seal 200.

[0055] More preferably, refer to Figure 3 and Figure 4 The clamping and positioning assembly 2 also includes an elastic gasket 25. The elastic gasket 25 is disposed on the surface of the pressure plate 22 that abuts against the push sleeve 1. The elastic gasket 25 may be made of nitrile rubber with a thickness of 3mm. The elastic gasket 25 can form a buffer between the pressure plate 22 and the push sleeve 1, thereby protecting the push sleeve 1, reducing wear, and improving service life.

[0056] The installation steps for the gearbox oil seal mounting structure provided in this embodiment are as follows:

[0057] 1. Assemble the push sleeve 1. The tenons 112 of multiple arc-shaped parts 11 are sequentially inserted into the tenons 113 of adjacent arc-shaped parts 11, and the connecting wedges 13 are inserted from the outer circle side of the push sleeve 1 (pushed until there is no looseness) to form a push sleeve 1 with a coaxiality of ≤0.1mm.

[0058] 2. Self-centering of the push sleeve 1. The push sleeve 1 is fitted outside the wheel axle 100 and automatically centers by utilizing the 0.2mm inner diameter gap and the fit gap between the tenon 112 and the mortise 113.

[0059] 3. Fix the guide post 21. The first threaded section 211 is screwed into the lifting hole 301 of the gearbox cover 300 until the step surface of the limiting platform stage 212 is in contact with the cover 300.

[0060] 4. Install the pressure plate 22 and the clamping nut 23. Fit the pressure plate 22 into the second threaded section 213, attach the nitrile rubber gasket to the lower surface, and screw in the clamping nut 23 for initial fixation.

[0061] 5. Synchronously tighten oil seal 200. The torque guns are distributed at 90° intervals along the circumference of the push sleeve 1, and the tightening nuts 23 are tightened synchronously (asynchronous tightening will cause a coaxiality deviation of up to 0.3mm). When the pressure plate 22 abuts against the stepped surface of the limit stage 212, the torque gun will slip and beep, and the operation will stop (oil seal 200 is in place, no overpressure).

[0062] The disassembly steps for the gearbox oil seal mounting structure provided in this embodiment are as follows:

[0063] 1. Remove the clamping nut 23 and the pressure plate 22. Unscrew the clamping nut 23 in sequence and remove the pressure plate 22.

[0064] 2. Separate the arc-shaped parts 11. Use a plastic hammer to gently tap the wedge 14 from the inner circle side of the push sleeve 1 to dismantle it, push out the connecting wedge 13, and separate the adjacent arc-shaped parts 11 along the side.

[0065] 3. Transporting the arc-shaped component 11. Carry the individual arc-shaped component 11 (maximum arc length 887.5mm < 900mm) through the tower maintenance passage to complete the disassembly.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gearbox oil seal mounting structure, characterized in that, include: A push sleeve (1) is fitted onto the gearbox axle (100). The push sleeve (1) includes multiple arc-shaped parts (11) connected end to end. The arc-shaped parts (11) extend at both ends in the circumferential direction to form tenons (111). The tenons (111) of two adjacent arc-shaped parts (11) overlap each other. The ends of the tenons (111) protrude to form tenons (112). The ends of the arc-shaped parts (11) are also provided with mortises (113) that engage with the tenons (112). A wedge groove (114) is provided on the overlapping plane of the tenons (111). The wedge groove (114) passes through the tenon (111) radially. The wedge grooves (114) of two adjacent arc-shaped parts (11) are engaged to form wedge holes (12). A connecting wedge (13) is inserted into the wedge hole (12). The clamping and positioning assembly (2) includes a guide post (21) and a pressure plate (22). The guide post (21) is disposed on the outer periphery of the push sleeve (1) and is detachably connected to the cover (300) of the gearbox along the axial direction. The pressure plate (22) can move along the guide post (21) toward the cover (300) to push the push sleeve (1) to install the oil seal (200) on the cover (300).

2. The gearbox oil seal mounting structure according to claim 1, characterized in that, The push sleeve (1) also includes a disassembly wedge (14), the projection of the disassembly wedge (14) on the axial direction of the connecting wedge (13) falls within the projection range of the connecting wedge (13), and the disassembly wedge (14) can be inserted into the wedge hole (12) from the inside of the push sleeve (1) to push the connecting wedge (13) out of the wedge hole (12).

3. The gearbox oil seal mounting structure according to claim 2, characterized in that, The connecting wedge (13) has a polygonal cross-sectional shape, the disassembly wedge (14) has a circular cross-sectional shape, the wedge hole (12) includes a first hole segment and a second hole segment connected in a line, the connecting wedge (13) can be inserted into the first hole segment, and the disassembly wedge (14) can be inserted into the second hole segment.

4. The gearbox oil seal mounting structure according to claim 1, characterized in that, The connecting wedge (13) is transitionally fitted with the wedge hole (12).

5. The gearbox oil seal mounting structure according to claim 1, characterized in that, The end of the push sleeve (1) that abuts against the oil seal (200) is the pressing end, and a chamfer (15) is provided on the outer periphery of the pressing end.

6. The gearbox oil seal mounting structure according to claim 1, characterized in that, A buffer pad is provided on the end face of the end of the push sleeve (1) that abuts against the oil seal (200).

7. The gearbox oil seal mounting structure according to any one of claims 1-6, characterized in that, The guide post (21) includes a first threaded section (211), a limiting stage (212), and a second threaded section (213) connected in sequence. The diameter of the first threaded section (211) and the diameter of the second threaded section (213) are both smaller than the diameter of the limiting stage (212). The first threaded section (211) is threaded to the lifting hole (301) of the cover (300). The pressure plate (22) is sleeved on the second threaded section (213). The end of the pressure plate (22) away from the second threaded section (213) abuts against the push sleeve (1). The pressure plate (22) can move along the axial direction of the second threaded section (213) to drive the push sleeve (1) to move.

8. The gearbox oil seal mounting structure according to claim 7, characterized in that, The clamping and positioning assembly (2) also includes a clamping nut (23), which is threaded to the second threaded section (213) to press the pressure plate (22) against the limiting stage (212).

9. The gearbox oil seal mounting structure according to claim 8, characterized in that, The clamping and positioning assembly (2) also includes a torque drive (24), the output end of which is connected to the clamping nut (23) to drive the clamping nut (23) to rotate around the second threaded section (213).

10. The gearbox oil seal mounting structure according to any one of claims 1-6, characterized in that, Multiple clamping and positioning components (2) are provided, and the multiple clamping and positioning components (2) are arranged at intervals along the circumference of the push sleeve (1).

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