Tractor transmission system arrangement structure

Abstract

The utility model discloses a tractor transmission system arrangement structure which comprises a frame assembly, a power system module, a power assembly suspension, a transmission shaft module, a drive axle module, a plate spring suspension module and a traction saddle module. The power system module is fixed to the front end of the frame assembly through a power assembly suspension, and the drive axle module is fixed to the rear end of the frame assembly through a plate spring suspension module. The transmission shaft module is provided with a main transmission shaft and an inter-axle transmission shaft, the main transmission shaft and the inter-axle transmission shaft are arranged in a straight line, the main transmission shaft is fixed to the rear end of the power system module and the front end of the drive axle module, the drive axle module comprises a middle axle and a rear axle, and the inter-axle transmission shaft is fixed to the rear end of the middle axle and the front section of the rear axle. And the traction saddle module is fixed with the rear end of the frame assembly. The height of the plate spring suspension is increased, the height of the traction saddle is reduced, the arrangement included angle of the transmission shaft is reduced, and the ablation failure rate of the universal joint of the transmission shaft is reduced.

Description

Technical Field

[0001] The utility model relates to a layout structure of a tractor transmission system, belonging to the technical field of tractor transmission system layout. Background Art

[0002] The tractor drive axle is limited by the structural layout of the main reducer inside the drive axle. The input flange of the drive axle is offset relative to the center plane, resulting in a lateral offset of the main drive shaft; limited by a certain height difference between the engine and the rear axle, the main drive shaft is offset longitudinally. Limited by the above-mentioned structural factors, the transmission angle of the drive shaft of the existing composite working condition tractor is too large, resulting in increased wear and reduced transmission efficiency. At present, for composite working condition tractors, due to their complex operating conditions, ablation failures of the drive shaft universal joints occur from time to time, greatly reducing transportation efficiency and causing huge losses. After analysis and confirmation, the main cause of ablation is the periodic vibration caused by the cross-shaft torque fluctuation. The cross-shaft torque fluctuation is very sensitive to the size of the angle between the transmitted torque and the drive shaft. Reducing the drive shaft angle is one of the main solutions to improve the cross-shaft torque fluctuation. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a tractor transmission system arrangement structure for the defects of the prior art, so as to reduce the ablation failure rate of the universal joint of the transmission shaft when the tractor is running under complex working conditions.

[0004] In order to solve this technical problem, the utility model provides a tractor transmission system layout structure, including a frame assembly, a power system module, a power system suspension, a transmission shaft module, a drive axle module, a leaf spring suspension module and a traction saddle module, the frame assembly includes a frame center plane and a frame lower wing surface, the power system module is fixedly connected to the front end of the frame assembly through the power system suspension, and the drive axle module is fixedly connected to the rear end of the frame assembly through the leaf spring suspension module; the transmission shaft module is provided with a main transmission shaft and an inter-bridge transmission shaft, the main transmission shaft and the inter-bridge transmission shaft are arranged in a straight line, the main transmission shaft is respectively fixedly connected to the rear end of the power system module and the front end of the drive axle module, the drive axle module includes a middle bridge and a rear axle, and the inter-bridge transmission shaft is respectively fixedly connected to the rear end of the middle bridge and the front section of the rear axle; the traction saddle module is fixedly connected to the rear end of the frame assembly.

[0005] The power system module is provided with a power system module output flange and a power system output flange transverse plane. The central longitudinal plane of the rear end output flange coincides with the central plane of the frame. The longitudinal offset distance between the transverse plane of the power system output flange and the lower wing surface of the frame is h1=35mm. The front end of the main transmission shaft is engaged with the power system module output flange through a flange plate and fixed with bolts.

[0006] The powertrain suspension is provided with a left front support, a right front support, a left rear support, a right rear support, a rear suspension bracket, a front support inner end face mounting axis, a rear suspension bracket mounting axis and a rear support mounting axis. The left front support and the right front support, the left rear support and the right rear support are symmetrical structures, and the center of symmetry is the center plane of the frame. The support is provided with a rubber support inside, and the outer end face is provided with a fixing hole connected to the frame assembly, and the projected cross-sections are trapezoidal and rectangular respectively; the upper end face of the support is provided with a fixing hole connected to the powertrain suspension; the upper end faces of the left rear support and the right rear support are fixedly connected to the power system module through the rear suspension bracket; the inner end face is parallel to the center plane of the frame, and the upper end face is perpendicular to the center plane of the frame; the mounting axis of the inner end face of the front support is parallel to the mounting axis of the rear support, and forms an angle φ1=2.5°~3° with the mounting axis of the rear suspension bracket, so as to realize the inclined arrangement of the power system module.

[0007] The middle bridge is provided with a transverse plane of the input flange at the front end of the middle bridge, a longitudinal plane of the input flange at the front end of the middle bridge, an input flange at the middle bridge, an output flange at the rear end of the middle bridge, a longitudinal plane of the output flange at the rear end of the middle bridge and a transverse plane of the output flange at the rear end of the middle bridge. The distance between the longitudinal plane of the input flange at the front end of the middle bridge and the center plane of the frame is d1=57mm; the distance between the transverse plane of the input flange at the front end of the middle bridge and the lower wing surface of the frame is h2=88mm; the rear end of the main transmission shaft is meshed with the input flange of the middle bridge through a flange plate and fixedly connected with bolts; the distance between the longitudinal plane of the output flange at the rear end of the middle bridge and the center plane of the frame is d2=42mm, and the distance between the transverse plane of the output flange at the rear end of the middle bridge and the lower wing surface of the frame is h3=136mm; the front end of the inter-bridge transmission shaft is meshed with the output flange at the rear end of the middle bridge through a flange plate and fixedly connected with bolts.

[0008] The rear axle is provided with a longitudinal plane of the input flange at the front end of the rear axle and a rear axle input flange. The distance between the longitudinal plane of the input flange at the front end of the rear axle and the center plane of the frame is d3=42mm; the distance between the transverse plane and the lower wing surface of the frame is h4=236mm; the rear end of the inter-bridge transmission shaft is meshed with the rear axle input flange through a flange plate and fixedly connected with bolts.

[0009] The leaf spring suspension module is provided with a suspension front bracket mounting axis, a balance shaft center plane, a suspension rear bracket mounting axis, a leaf spring mounting seat end face, an axle mounting center plane, a suspension limit block, a balance shaft bracket, an axle mounting seat and a suspension V-push bracket; the leaf spring suspension module is fixedly mounted on the rear end of the frame assembly through the balance shaft bracket; the leaf spring mounting seat end face is parallel to the frame lower wing surface, and the axle mounting seat end face and the frame lower wing surface form an angle of φ2=2.5°~3°, completing the inclined arrangement of the drive axle; the suspension front bracket mounting axis and the suspension rear bracket mounting axis are symmetrical to each other, and the symmetry plane is the balance shaft center plane; the distance between the axle mounting center plane and the frame lower wing surface is the suspension height h5=210mm; the suspension V-push bracket is used for auxiliary fixation of the drive axle module, the leaf spring suspension module and the frame assembly.

[0010] The drive axle module is also provided with a drive axle mounting seat and a drive axle mounting axis. The drive axle mounting axis and the suspension bracket mounting axis form an angle of φ3=2.5°~3°, completing the inclined arrangement of the drive axle module; the drive axle mounting seat and the axle mounting seat are fixedly connected using riding bolts to complete the connection and fixation between the drive axle module and the leaf spring suspension module.

[0011] The elevation angle of the lubrication system of the power system module is 2° to 4°.

[0012] The saddle connecting plate height of the traction saddle module is 20 mm.

[0013] Beneficial effects: The utility model reduces the transmission shaft arrangement angle by optimizing the offset distance of the drive axle, arranging the transmission system at a small angle, increasing the leaf spring suspension height, and reducing the traction saddle height, thereby effectively reducing the ablation failure rate of the transmission shaft universal joint when the tractor is running under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic top view of the structure of the utility model;

[0015] Figure 2 It is a rear view showing the structure of the power system module of the utility model;

[0016] Figure 3 It is a front view showing the structure of the middle bridge of the drive axle of the utility model;

[0017] Figure 4 It is a rear view showing the structure of the middle bridge of the drive axle of the utility model;

[0018] Figure 5 It is a front view showing the structure of the rear axle of the drive axle of the utility model;

[0019] Figure 6 It is a schematic diagram of the installation of the powertrain suspension of the utility model;

[0020] Figure 7 This is a schematic diagram of the installation of the leaf spring suspension module of the utility model;

[0021] Figure 8 This is a schematic diagram of the installation of the V-push suspension of the utility model;

[0022] Fig. 9 This is a schematic diagram of the installation of the drive axle of the utility model;

[0023] Fig.10 It is a partial schematic diagram of the installation structure of the drive axle of the utility model.

[0024] In the figure: 1. Frame assembly; 2. Power system module; 3. Power system suspension; 4. Transmission shaft module; 6. Leaf spring suspension module; 7. Traction saddle module; 11. Frame center plane; 12. Frame lower wing surface; 21. Power system module output flange; 22. Transverse plane of power system output flange; 31. Right front support; 32. Right rear support; 33. Rear suspension bracket; 34. Front support inner end surface mounting axis; 35. Rear suspension bracket mounting axis; 36. Rear support mounting axis; 41. Main transmission shaft; 42. Inter-axle transmission shaft; 51. Middle axle; 52. Rear axle; 53. Drive axle mounting seat; 55. Drive axle mounting axis; 5 11. Horizontal plane of the input flange at the front end of the middle bridge; 512. Longitudinal plane of the input flange at the front end of the middle bridge; 514. Input flange of the middle bridge; 516. Output flange at the rear end of the middle bridge; 517. Longitudinal plane of the output flange at the rear end of the middle bridge; 518. Horizontal plane of the output flange at the rear end of the middle bridge; 521. Longitudinal plane of the input flange at the front end of the rear axle; 524. Input flange of the rear axle; 61. Installation axis of the front bracket of the suspension; 62. Center plane of the balance shaft; 63. Installation axis of the rear bracket of the suspension; 64. End face of the leaf spring mounting seat; 65. Center plane of the axle installation; 68. Suspension limit block; 69. Balance shaft bracket; 610. Axle mounting seat; 611. Suspension V push bracket. DETAILED DESCRIPTION

[0025] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1-Figure 10 As shown, the utility model provides a tractor transmission system arrangement structure, including a frame assembly 1, a power system module 2, a power system suspension 3, a transmission shaft module 4, a drive axle module, a leaf spring suspension module 6 and a traction saddle module 7, the frame assembly 1 includes a frame center plane 11 and a frame lower wing surface 12, the power system module 2 is fixedly connected to the front end of the frame assembly 1 through the power system suspension 3, and the drive axle module is fixedly connected to the rear end of the frame assembly 1 through the leaf spring suspension module 6; the transmission shaft module 4 is provided with a main transmission shaft 41 and an inter-bridge transmission shaft 42, the main transmission shaft 41 and the inter-bridge transmission shaft 42 are arranged in a straight line, the main transmission shaft 41 is respectively fixedly connected to the rear end of the power system module 2 and the front end of the drive axle module, the drive axle module includes a middle bridge 51 and a rear axle 52, the inter-bridge transmission shaft 42 is respectively fixedly connected to the rear end of the middle bridge 51 and the front section of the rear axle 52; the traction saddle module 7 is fixedly connected to the rear end of the frame assembly 1.

[0027] The power system module 2 is provided with a power system module output flange 21 and a power system output flange transverse plane 22. The central longitudinal plane of the rear end output flange coincides with the central plane 11 of the frame. The longitudinal offset distance between the transverse plane 22 of the power system output flange and the lower wing surface 12 of the frame is h1=35mm. The front end of the main transmission shaft 41 is engaged with the power system module output flange 21 through a flange plate and fixed with bolts.

[0028] The powertrain suspension 3 is provided with a left front support, a right front support 31, a left rear support, a right rear support 32, a rear suspension bracket 33, a front support inner end surface mounting axis 34, a rear suspension bracket mounting axis 35 and a rear support mounting axis 36. The left front support and the right front support 31, the left rear support and the right rear support 32 are symmetrical structures, and the symmetry center is the frame center plane 11. The support is provided with a rubber support inside, and the outer end surface is provided with a fixing hole connected to the frame assembly 1, and the projected cross-sections are respectively trapezoidal and a rectangle; a fixing hole for connecting the powertrain suspension 3 is provided on the upper end surface of the support; the upper end surfaces of the left rear support and the right rear support 32 are fixedly connected to the power system module 2 through the rear suspension bracket 33; the inner end surface is parallel to the center plane 11 of the frame, and the upper end surface is perpendicular to the center plane 11 of the frame; the mounting axis 34 of the inner end surface of the front support is parallel to the mounting axis 36 of the rear support, and forms an angle of φ1=2.5°~3° with the mounting axis 35 of the rear suspension bracket, thereby realizing the inclined arrangement of the power system module 2.

[0029] The middle bridge 51 is provided with a transverse plane 511 of the input flange at the front end of the middle bridge, a longitudinal plane 512 of the input flange at the front end of the middle bridge, an input flange 514 of the middle bridge, an output flange 516 at the rear end of the middle bridge, a longitudinal plane 517 of the output flange at the rear end of the middle bridge and a transverse plane 518 of the output flange at the rear end of the middle bridge. The distance between the longitudinal plane 512 of the input flange at the front end of the middle bridge and the center plane 11 of the frame is d1=57mm; the distance between the transverse plane 511 of the input flange at the front end of the middle bridge and the lower wing surface 12 of the frame is h2=88mm; the rear end of the main transmission shaft 41 is meshed with the middle bridge input flange 514 through a flange plate and fixedly connected with bolts; the distance between the longitudinal plane 517 of the output flange at the rear end of the middle bridge and the center plane 11 of the frame is d2=42mm, and the distance between the transverse plane 518 of the output flange at the rear end of the middle bridge and the lower wing surface 12 of the frame is h3=136mm; the front end of the inter-bridge transmission shaft 42 is meshed with the output flange 516 at the rear end of the middle bridge through a flange plate and fixedly connected with bolts.

[0030] The rear axle 52 is provided with a longitudinal plane 521 of the input flange at the front end of the rear axle and a rear axle input flange 524. The distance between the longitudinal plane 521 of the input flange at the front end of the rear axle and the center plane 11 of the frame is d3=42mm; the distance between the transverse plane and the lower wing surface 12 of the frame is h4=236mm, which coincides with the axle installation center plane 65; the rear end of the inter-axle transmission shaft 42 is meshed with the rear axle input flange 524 through a flange plate and fixedly connected with bolts; that is: the longitudinal offset distance is h4=236mm, and the transverse offset distance of the rear axle is d3=42mm.

[0031] The leaf spring suspension module 6 is provided with a suspension front bracket installation axis 61, a balance shaft center plane 62, a suspension rear bracket installation axis 63, a leaf spring mounting seat end face 64, an axle installation center plane 65, a suspension limit block 68, a balance shaft bracket 69, an axle mounting seat 610 and a suspension V-push bracket 611; the leaf spring suspension module 6 is fixedly installed at the rear end of the frame assembly 1 through the balance shaft bracket 69; the leaf spring mounting seat end face 64 is parallel to the frame lower wing surface 12 to ensure the vertical bearing capacity of the suspension leaf spring; the end face of the axle mounting seat 610 and the frame lower wing surface 12 form an angle of φ2=2.5°~3° to realize the inclined arrangement of the drive axle; the suspension front bracket installation axis 61 and the suspension rear bracket installation The mounting axes 63 are symmetrical to each other, and the symmetry plane is the center plane 62 of the balance shaft, which ensures the balanced bearing capacity of the drive axle and its upper suspension; the distance between the axle mounting center plane 65 and the lower wing surface 12 of the frame is the suspension height h5=210mm, and the suspension height h5 can be adjusted by adjusting the height of the leaf spring seat. Under the condition of ensuring the vehicle's carrying capacity, the suspension height is designed to a suitable value, which can make the power transmission route between the power system module 2 and the drive axle module a straight line, which can greatly reduce the arrangement angle of the transmission shaft and improve the transmission efficiency; the suspension V push bracket 611 is used for auxiliary fixation of the drive axle module, the leaf spring suspension module 6, and the frame assembly 1, which enhances the fixing strength while ensuring the lateral stability of the vehicle.

[0032] The drive axle module is also provided with a drive axle mounting seat 53 and a drive axle mounting axis 55. The drive axle mounting axis 55 and the suspension bracket mounting axis form an angle of φ3 = 2.5°~3° to achieve an inclined arrangement of the drive axle module; the drive axle mounting seat 53 and the axle mounting seat 610 are fixedly connected using riding bolts to achieve the connection and fixation between the drive axle module and the leaf spring suspension module 6.

[0033] The lubrication system elevation angle of the power system module 2 is 2° to 4°. Within this angle range, the engine lubrication system can be guaranteed to work normally and play a better lubrication role.

[0034] The saddle connecting plate height of the traction saddle module 7 is 20 mm, which is about 35 mm lower than the connecting plate height in the prior art, thereby lowering the center of mass position of the tractor when it is running.

[0035] The utility model optimizes the drive axle structure, and reduces d1 to 57mm, so that the lateral offset distance of the main transmission shaft 41 is reduced by about 40%; d2 and d3 are both 42mm, so that the lateral offset distance between the main transmission shaft 41 and the inter-bridge transmission shaft 42 is 0, avoiding the negative impact caused by the height difference of the arrangement, greatly reducing the longitudinal section arrangement angle of the transmission shaft, and improving the transmission efficiency; h1 (35mm) value is smaller than h2 (88mm), so that there is a height difference between the arrangement of the power system module output flange 21 and the front end input flange 514 of the middle bridge, and h3 (136mm) value is selected to be smaller than h4 (236mm), so that there is a height difference between the arrangement of the rear end output flange 516 of the middle bridge and the front end input flange of the rear axle. The above-mentioned arrangement of the two height differences, in conjunction with the inclined arrangement of the transmission system, reduces the arrangement angle of the transmission shaft, makes the installation surface of the transmission shaft flange more compatible, and the transmission is smooth.

[0036] The utility model optimizes the layout structure of the transmission system so that the equivalent angle of the drive shaft of the tractor under no-load and full-load conditions is less than 3°, the comprehensive layout angle of the drive shaft can be reduced to 2.5°, and the mounting flange surfaces at both ends of the drive shaft are parallel, which is better than the standard specification of the drive shaft layout, ensures high transmission efficiency, and reduces the ablation failure rate of the universal joint of the tractor drive shaft.

[0037] The utility model adopts measures such as optimizing the offset distance of the drive axle, arranging the transmission system at a small angle, increasing the height of the leaf spring suspension, and reducing the height of the traction saddle, thereby reducing the transmission shaft arrangement angle and effectively reducing the failure rate of the transmission shaft universal joint ablation when the tractor is running under complex working conditions.

[0038] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A tractor transmission system arrangement structure, characterized in that: The vehicle comprises a frame assembly (1), a power system module (2), a power system suspension (3), a transmission shaft module (4), a drive axle module, a leaf spring suspension module (6) and a traction saddle module (7); the frame assembly (1) comprises a frame center plane (11) and a frame lower wing surface (12); the power system module (2) is fixedly connected to the front end of the frame assembly (1) via the power system suspension (3); the drive axle module is fixedly connected to the rear end of the frame assembly (1) via the leaf spring suspension module (6); The axle module (4) is provided with a main transmission shaft (41) and an inter-axle transmission shaft (42), the main transmission shaft (41) and the inter-axle transmission shaft (42) are arranged in a straight line, the main transmission shaft (41) is fixedly connected to the rear end of the power system module (2) and the front end of the drive axle module, the drive axle module includes a middle axle (51) and a rear axle (52), the inter-axle transmission shaft (42) is fixedly connected to the rear end of the middle axle (51) and the front end of the rear axle (52), respectively; the traction saddle module (7) is fixedly connected to the rear end of the frame assembly (1).

2. The tractor transmission system arrangement structure according to claim 1, characterized in that: The power system module (2) is provided with a power system module output flange (21) and a power system output flange transverse plane (22); the rear end output flange central longitudinal plane coincides with the frame central plane (11); the longitudinal offset distance between the power system output flange transverse plane (22) and the frame lower wing surface (12) is h1=35 mm; the front end of the main transmission shaft (41) is meshed with the power system module output flange (21) through a flange plate and fixed with bolts.

3. The tractor transmission system arrangement structure according to claim 1, characterized in that: The power assembly suspension (3) is provided with a left front support, a right front support (31), a left rear support, a right rear support (32), a rear suspension bracket (33), a front support inner end surface mounting axis (34), a rear suspension bracket mounting axis (35) and a rear support mounting axis (36); the left front support and the right front support (31), the left rear support and the right rear support (32) are symmetrical structures, and the symmetry center is the frame center plane (11); a rubber support is provided inside the support, and a fixing hole for connecting to the frame assembly (1) is provided on the outer end surface, and the projected cross sections are respectively Trapezoidal and rectangular; the upper end surface of the support is provided with a fixing hole for connecting to the powertrain suspension (3); the upper end surfaces of the left rear support and the right rear support (32) are fixedly connected to the power system module (2) through the rear suspension bracket (33); the inner end surface is parallel to the center plane of the frame (11), and the upper end surface is perpendicular to the center plane of the frame (11); the installation axis (34) of the inner end surface of the front support is parallel to the installation axis (36) of the rear support, and forms an angle φ1 = 2.5° to 3° with the installation axis (35) of the rear suspension bracket, so as to realize the inclined arrangement of the power system module (2).

4. The tractor transmission system arrangement structure according to claim 1, characterized in that: The middle bridge (51) is provided with a middle bridge front end input flange transverse plane (511), a middle bridge front end input flange longitudinal plane (512), a middle bridge input flange (514), a middle bridge rear end output flange (516), a middle bridge rear end output flange longitudinal plane (517) and a middle bridge rear end output flange transverse plane (518), the distance between the middle bridge front end input flange longitudinal plane (512) and the frame center plane (11) is d1=57mm; the middle bridge front end input flange transverse plane (511) and the frame lower wing surface (1 2) is h2=88mm; the rear end of the main transmission shaft (41) is meshed with the input flange (514) of the middle bridge through a flange plate and fixedly connected with bolts; the distance between the longitudinal plane (517) of the output flange at the rear end of the middle bridge and the center plane (11) of the frame is d2=42mm, and the distance between the transverse plane (518) of the output flange at the rear end of the middle bridge and the lower wing surface (12) of the frame is h3=136mm; the front end of the inter-bridge transmission shaft (42) is meshed with the output flange (516) at the rear end of the middle bridge through a flange plate and fixedly connected with bolts.

5. The tractor transmission system arrangement structure according to claim 1, characterized in that: The rear axle (52) is provided with a rear axle front end input flange longitudinal plane (521) and a rear axle input flange (524); the distance between the rear axle front end input flange longitudinal plane (521) and the frame center plane (11) is d3=42 mm; the distance between the transverse plane and the frame lower wing surface (12) is h4=236 mm; the rear end of the inter-axle transmission shaft (42) and the rear axle input flange (524) are meshed and fixedly connected with bolts via a flange plate.

6. The tractor transmission system arrangement structure according to claim 1, characterized in that: The leaf spring suspension module (6) is provided with a suspension front bracket mounting axis (61), a balance shaft center plane (62), a suspension rear bracket mounting axis (63), a leaf spring mounting seat end surface (64), an axle mounting center plane (65), a suspension stop block (68), a balance shaft bracket (69), an axle mounting seat (610) and a suspension V-push bracket (611); the leaf spring suspension module (6) is fixedly mounted on the rear end of the frame assembly (1) through the balance shaft bracket (69); the leaf spring mounting seat end surface (64) is parallel to the frame lower wing surface (12), The end face of the axle mounting seat (610) and the lower wing surface (12) of the frame form an angle of φ2=2.5°~3°, completing the inclined arrangement of the drive axle; the suspension front bracket mounting axis (61) and the suspension rear bracket mounting axis (63) are symmetrical to each other, and the symmetry plane is the balance shaft center plane (62); the distance between the axle mounting center plane (65) and the lower wing surface (12) of the frame is the suspension height h5=210mm; the suspension V push bracket (611) is used for auxiliary fixing of the drive axle module, the leaf spring suspension module (6) and the frame assembly (1).

7. The tractor transmission system arrangement structure according to claim 1, characterized in that: The drive axle module is also provided with a drive axle mounting seat (53) and a drive axle mounting axis (55); the drive axle mounting axis (55) and the suspension bracket mounting axis form an angle of φ3=2.5°-3°, thereby completing the inclined arrangement of the drive axle module; the drive axle mounting seat (53) and the axle mounting seat (610) are fixedly connected using riding bolts, thereby completing the connection and fixation between the drive axle module and the leaf spring suspension module (6).

8. The tractor transmission system arrangement structure according to claim 1, characterized in that: The lubrication system elevation angle of the power system module (2) is 2° to 4°.

9. The tractor transmission system arrangement structure according to any one of claims 1 to 8, characterized in that: The saddle connection plate of the traction saddle module (7) has a height of 20 mm.

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