Motor-driven tractor transmission system

Abstract

The utility model provides a tractor transmission system driven by a motor, which comprises a walking driving component, the walking driving component is in transmission connection with a front axle assembly through a front axle transmission component, the walking driving component is in transmission connection with a rear axle assembly through a rear axle transmission component, and the tractor transmission system further comprises a PTO power output component. The PTO power output assembly is installed above the walking driving assembly. A tractor transmission system directly connected with a motor is adopted, the structure is simple and compact, stepless speed change of whole machine transmission is achieved, and the transmission efficiency is improved; the high-performance permanent magnet synchronous motor works for 4-6 hours, can provide strong, zero-emission and ultra-silence energy power, can also realize high torque and quick response at low speed, is highly matched with various different working conditions, and ensures that equipment is abundant in power, more efficient and more energy-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tractors, in particular to a tractor transmission system driven by a motor. Background Art

[0002] A tractor is a self-propelled power machine used to pull and drive operating machinery to complete various mobile operations. It forms various operating units (referred to as units) through towing, pushing, driving and operating supporting machinery to complete farmland, forestry, transportation, gardening and engineering, fixed operations, etc. Tractors are the main power of agricultural modernization and play an important role in forestry, engineering construction and urban landscaping. The number of tractors owned is one of the important indicators of a country's agricultural development level.

[0003] Existing tractors use engines as power output, which have complex structural designs and high costs, consume a lot of fuel, and emit exhaust gas that pollutes the environment. The direct-connected transmission structure is relatively simple, has high transmission efficiency, is compact, and saves materials. Therefore, this application proposes a motor-driven tractor transmission system, which realizes stepless speed change of the whole machine transmission through the tractor transmission system directly connected to the motor, and improves the transmission efficiency. The high-performance permanent magnet synchronous motor has a working time of 4-6 hours, can provide strong, zero-emission, and ultra-quiet energy power, can also achieve high torque and fast response at low speed, and highly matches various working conditions to ensure that the equipment is powerful, more efficient, and more energy-saving. Utility Model Content

[0004] The purpose of the utility model is to provide a motor-driven tractor transmission system to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a motor-driven tractor transmission system, comprising a travel drive assembly, wherein the travel drive assembly is transmission-connected to a front axle assembly via a front axle transmission assembly, the travel drive assembly is transmission-connected to a rear axle assembly via a rear axle transmission assembly, and further comprising a PTO power output assembly, wherein the PTO power output assembly is installed above the travel drive assembly.

[0007] Preferably, the travel drive assembly includes a travel motor, which is installed on the outside of the rear axle assembly through a travel motor mounting bracket, and the power output end of the travel motor is transmission-connected to one end of the II shaft through a first internal spline connecting sleeve, and the other end of the II shaft is supported by a cylindrical roller bearing, and a II shaft bearing seat is provided on the outside of the II shaft, and a first rolling bearing is provided between the II shaft bearing seat and the II shaft, and a II shaft bearing seat cover is provided on the side of the II shaft bearing seat, and the side of the II shaft bearing seat cover is fixed by a round nut, and a sealing sleeve, a first O-ring and an oil seal are provided on the II shaft bearing seat cover, and a second O-ring is provided on the outside of the II shaft bearing seat.

[0008] Preferably, the front axle transmission assembly includes a transfer case, a transfer case driving gear is provided on the transfer case, the transfer case driving gear fixing sleeve is arranged on the outside of the II shaft, the power output end of the transfer case is transmission connected to one end of the transmission shaft through an involute spline connecting sleeve, and the other end of the transmission shaft is transmission connected to the front axle assembly.

[0009] Preferably, the rear axle assembly comprises a rear axle box, half shafts are rotatably provided on both sides of the rear axle box, and hubs are provided at the ends of the half shafts, and rear tires are mounted on the hubs.

[0010] Preferably, the rear axle transmission assembly includes a differential component, the differential component is drivingly connected to the II shaft, the differential component is drivingly connected to the final drive pinion, the final drive pinion is meshed with the final drive gear, and the final drive gear is installed on the half shaft.

[0011] Preferably, the PTO power output assembly includes a PTO drive motor, which is mounted on a motor mounting transition plate. The power output end of the PTO drive motor is transmission-connected to the power output shaft via a second internal spline connecting sleeve, and the power output shaft is transmission-connected to the idler shaft via an idler. A third O-ring and a second rolling bearing are provided on the outside of the idler shaft, and is transmission-connected to the power output shaft PTO via a PTO passive gear.

[0012] Compared with the prior art, the utility model has achieved the following beneficial technical effects:

[0013] The utility model provides a motor-driven tractor transmission system, comprising a travel drive component, wherein the travel drive component is transmission-connected to a front axle assembly via a front axle transmission component, and the travel drive component is transmission-connected to a rear axle assembly via a rear axle transmission component, and further comprising a PTO power output component, wherein the PTO power output component is installed above the travel drive component; the tractor transmission system directly connected to the motor has a simple and compact structure, and realizes stepless speed change of the whole machine transmission, thereby improving transmission efficiency; the high-performance permanent magnet synchronous motor has a working time of 4-6 hours, can provide strong, zero-emission, and ultra-quiet energy power, can also achieve high torque and fast response at low speed, and is highly matched to various working conditions, thereby ensuring that the equipment is sufficiently powered, more efficient, and more energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A top view of a motor-driven tractor transmission system provided by the utility model;

[0016] Figure 2 A side view of a motor-driven tractor transmission system provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the II-axis portion of a motor-driven tractor transmission system provided by the utility model;

[0018] In the figure: 1. Travel motor, 2. Travel motor mounting bracket, 3. First internal spline connection sleeve, 4. II shaft, 5. Round nut, 6. Sealing sleeve, 7. First O-ring, 8. Oil seal, 9. II shaft bearing seat cover, 10. II shaft bearing seat, 11. Second O-ring, 12. First rolling bearing, 13. Transfer case driving gear, 14. Cylindrical roller bearing, 15. Differential component, 16. Final drive pinion, 17. Final drive gear Gear, 18. Axle shaft, 19. Wheel hub, 20. Rear tire, 21. PTO drive motor, 22. Motor mounting transition plate, 23. Second internal spline connection sleeve, 24. Power output shaft, 25. Idle wheel, 26. Idle wheel shaft, 27. Third O-ring, 28. Second rolling bearing, 29. PTO passive gear, 30. Power output shaft PTO, 31. Transfer case, 32. Drive shaft, 33. Front axle assembly, 34. Rear axle box. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model aims to provide a motor-driven tractor transmission system to solve the problems existing in the prior art.

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Embodiment 1:

[0023] This embodiment provides a motor-driven tractor transmission system, such as Figure 1-3 As shown, it includes a travel drive component, which is connected to the front axle assembly 33 through a front axle transmission component, and the travel drive component is connected to the rear axle assembly through a rear axle transmission component. It also includes a PTO power output component, which is installed above the travel drive component.

[0024] Specifically, the travel drive assembly includes a travel motor 1, which is installed on the outside of the rear axle assembly through a travel motor mounting bracket 2. The travel motor mounting bracket 2 has two locating pin holes and bolt holes on both sides connected to the box body at one end of the structure, and a locating hole and a connecting bolt hole that match the travel motor positioning flange at the other end. There are mutual position accuracy requirements between the two locating pin holes and the locating holes installed with the motor positioning flange and the mounting planes at both ends to ensure the technical requirements for the coaxiality of the motor output shaft and the II shaft when installed. The power output end of the travel motor 1 is connected to one end of the II shaft 4 through a first internal spline connecting sleeve 3, and the other end of the II shaft 4 is supported by a cylindrical roller bearing 14. A II shaft bearing seat 10 is provided on the outside of the II shaft 4, and a first rolling bearing 12 is provided between the II shaft bearing seat 10 and the II shaft 4. A II shaft bearing seat cover 9 is provided on the side of the II shaft bearing seat 10, and the side of the II shaft bearing seat cover 9 is fixed by a round nut 5. A sealing sleeve 6, a first O-ring 7 and oil seal 8, a second O-ring 11 is provided on the outside of the II shaft bearing seat 10, and the II shaft bearing seat 10 is structurally provided with 4 evenly distributed lubricating oil channel holes in the axial direction. The lubricating oil enters the inner cavity through the annular groove at the end of the hole to lubricate the first rolling bearing 12, thereby improving the lubrication condition of the front-end bearing; a sealing sleeve 6 is installed at the matching position between the II shaft 4 and the II shaft bearing seat cover 9, and the inner and outer circles of the sealing sleeve 6 and the II shaft 4 maintain the concentricity requirement, and a first O-ring 7 is installed in the inner hole of the sealing sleeve 6, and the II shaft bearing seat cover 9 is installed with an oil seal 8 coaxial with the II shaft 4, thereby ensuring that the lubricating oil in the rear axle box will not leak out when the II shaft 4 is operating normally.

[0025] Furthermore, the front axle transmission assembly includes a transfer case 31, on which a transfer case driving gear 13 is provided, and the transfer case driving gear 13 is fixedly sleeved on the outside of the II shaft 4. The power output end of the transfer case 31 is transmission-connected to one end of a transmission shaft 32 through an involute spline connecting sleeve, and the other end of the transmission shaft 32 is transmission-connected to a front axle assembly 33. The power is input to the front axle assembly 33, and is transmitted to the wheel hub and the front tire through the differential, half-tube, and spiral bevel gear inside the front axle, thereby driving the front tire forward or backward.

[0026] Furthermore, the rear axle assembly includes a rear axle box 34 , and half shafts 18 are rotatably provided on both sides of the rear axle box 34 . The ends of the half shafts 18 are provided with wheel hubs 19 , and the rear tires 20 are mounted on the wheel hubs 19 .

[0027] Furthermore, the rear axle transmission assembly includes a differential component 15, which is transmission-connected to the II shaft 4, and the differential component 15 is transmission-connected to the final drive pinion 16, and the final drive pinion 16 is meshed with the final drive gear 17, and the final drive gear 17 is installed on the half shaft 18. The torque is transmitted to the rear tire 20 through the above-mentioned transmission structure, and the reaction force of the tire due to the adhesion of the ground drives the entire vehicle forward or backward.

[0028] Furthermore, the PTO power output assembly includes a PTO drive motor 21, which is installed on a motor mounting transition plate 22. The PTO drive motor 21 is connected to the front end of the rear axle box through the transition plate 22. Positioning stops that cooperate with the motor positioning flange and positioning flanges that cooperate with the box positioning holes are respectively provided on both sides of the transition plate 22 to ensure the coaxiality requirements of the motor output shaft and the power output shaft. The power output end of the PTO drive motor 21 is transmission-connected to the power output shaft 24 through a second internal spline connecting sleeve 23, and the power output shaft 24 is transmission-connected to the idler shaft 26 through an idler 25. The outside of the idler shaft 26 is provided with a third O-ring 27 and a second rolling bearing 28, and is transmission-connected to the power output shaft PTO30 through a PTO passive gear 29 to drive the agricultural machinery connected to the power output shaft at the back to work.

[0029] The motors of the above-mentioned two transmission systems, the travel drive and the working drive, can both be steplessly regulated to obtain different torques and speeds to adapt to different load conditions, and can operate independently without affecting each other.

[0030] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A motor-driven tractor transmission system, characterized in that: It includes a travel drive component, which is connected to the front axle assembly through a front axle transmission component, and is connected to the rear axle assembly through a rear axle transmission component. It also includes a PTO power output component, which is installed above the travel drive component.

2. The motor-driven tractor transmission system according to claim 1, characterized in that: The travel drive assembly includes a travel motor, which is installed on the outside of the rear axle assembly through a travel motor mounting bracket. The power output end of the travel motor is transmission-connected to one end of the II shaft through a first internal spline connecting sleeve. The other end of the II shaft is supported by a cylindrical roller bearing. A II shaft bearing seat is provided on the outside of the II shaft. A first rolling bearing is provided between the II shaft bearing seat and the II shaft. A II shaft bearing seat cover is provided on the side of the II shaft bearing seat. The side of the II shaft bearing seat cover is fixed by a round nut. A sealing sleeve, a first O-ring and an oil seal are provided on the II shaft bearing seat cover. A second O-ring is provided on the outside of the II shaft bearing seat.

3. The motor-driven tractor transmission system according to claim 2, characterized in that: The front axle transmission assembly includes a transfer case, on which a transfer case driving gear is provided. The transfer case driving gear fixing sleeve is arranged on the outside of the II shaft. The power output end of the transfer case is transmission-connected to one end of the transmission shaft through an involute spline connecting sleeve, and the other end of the transmission shaft is transmission-connected to the front axle assembly.

4. The motor-driven tractor transmission system according to claim 2, characterized in that: The rear axle assembly comprises a rear axle box, half shafts are rotatably provided at both sides of the rear axle box, wheel hubs are provided at the ends of the half shafts, and rear tires are installed on the wheel hubs.

5. The motor-driven tractor transmission system according to claim 4, characterized in that: The rear axle transmission assembly includes a differential component, which is drivingly connected to the II shaft, and the differential component is drivingly connected to the final drive pinion gear, and the final drive pinion gear is meshed with the final drive gearwheel, and the final drive gearwheel is installed on the half shaft.

6. The motor-driven tractor transmission system according to claim 1, characterized in that: The PTO power output assembly includes a PTO drive motor, which is installed on a motor mounting transition plate. The power output end of the PTO drive motor is transmission-connected to the power output shaft via a second internal spline connecting sleeve. The power output shaft is transmission-connected to the idler shaft via an idler. A third O-ring and a second rolling bearing are provided on the outside of the idler shaft, and the idler shaft is transmission-connected to the power output shaft PTO via a PTO passive gear.

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