High-ground-clearance gearbox assembly and tractor

Abstract

The utility model discloses a high ground clearance gear box assembly and a tractor, the high ground clearance gear box assembly comprises a vertically arranged gear box, and a driving gear, an idle gear and a driven gear which are sequentially and rotatably arranged in the gear box along the vertical direction, and the driving gear and the driven gear are meshed with the idle gear; the driving gear is provided with a first gear shaft which is coaxially and fixedly arranged, the inertia gear is provided with a second gear shaft which is coaxially and fixedly arranged, the driven gear is provided with a third gear shaft which is coaxially and fixedly arranged, the first gear shaft, the second gear shaft and the third gear shaft are horizontally arranged in the left-right direction, and the first gear shaft is used for inputting power; and one end of the third gear shaft horizontally penetrates out of the gear box to form a wheel shaft, so that the idle wheel is arranged between the driving gear and the driven gear, the driven gear sinks relative to the driving gear, and the wheel shaft can move downwards relative to the chassis, so that the gear box assembly has a relatively high ground clearance.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractors, and in particular relates to a high ground clearance gearbox assembly and a tractor. Background Art

[0002] When tractors are used for tillage, they often need to apply pesticides. At this time, the crop growth height has reached 70-80cm. The chassis of ordinary tractors is relatively low, mostly around 50cm. Using ordinary tractors will damage crops, resulting in reduced crop yields and reduced economic benefits. To maximize crop protection and increase yields, the tractor chassis height needs to be raised, increasing the distance between the lowest point of the chassis and the ground. The rear wheel tire diameter is directly increased to increase the ground clearance. The chassis raising distance is small, and tires with too large a diameter will cause the transmission system to bear higher torque, reducing the reliability of the transmission system. Tires with too large a diameter will also take up a large space, making the steering worse, the overall machine space layout smaller, and the overall machine cost will also increase. Utility Model Content

[0003] In order to solve the above technical problems, one of the objectives of the present invention is to provide a high ground clearance gearbox assembly with a simple structure and capable of sinking the passive gear.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: A high ground clearance gearbox assembly includes a vertically arranged gearbox and a driving gear, an idler gear and a driven gear arranged in sequence in the up and down directions in the gearbox, the driving gear and the driven gear are both engaged with the idler gear, the driving gear has a first gear shaft fixedly arranged coaxially, the idler gear has a second gear shaft arranged coaxially, and the driven gear has a third gear shaft fixedly arranged coaxially, the first gear shaft, the second gear shaft and the third gear shaft are all horizontally arranged in the left and right directions, the first gear shaft is used to input power, and one end of the third gear shaft horizontally extends out of the gearbox to form a wheel axle.

[0005] The beneficial effect of the above technical solution is that the idler gear can be placed between the driving gear and the driven gear to make the driven gear sink relative to the driving gear, so that the wheel axle can be moved downward relative to the chassis, so that the gearbox assembly has a higher ground clearance.

[0006] In the above technical solution, two idle gears are provided, and the two idle gears are spaced apart and distributed along the front-to-back direction between the passive gear and the driving gear, and the driving gear and the passive gear are respectively engaged with the two idle gears.

[0007] The beneficial effect of the above technical solution is that by providing two idler gears, the stability and reliability of the transmission system in the gearbox are improved.

[0008] In the above technical solution, the second gear shaft is coaxially connected to the idler gear for rotation, and the second gear shaft is fixedly connected to the gear box.

[0009] The beneficial effect of the above technical solution is that the second gear shaft can be fixedly installed relative to the gear box, and its installation is more convenient and reliable.

[0010] In the above technical solution, a drive wheel connecting plate is coaxially arranged at one end of the third gear shaft located outside the gear box, and a plurality of drive wheel connecting bolts are evenly spaced circumferentially on the drive wheel connecting plate, and the drive wheel connecting bolts are located on the side of the drive wheel connecting plate away from the third gear shaft, and the drive wheel connecting bolts are arranged perpendicular to the drive wheel connecting plate.

[0011] The beneficial effect of the above technical solution is that the wheel can be installed on the driving wheel connecting plate more conveniently.

[0012] In the above technical solution, a respirator is also embedded at the upper end of the gear box, and the respirator is used to keep the pressure inside the gear box balanced with that outside.

[0013] The beneficial effect of the above technical solution is that the internal and external pressures of the gearbox can be kept consistent.

[0014] In the above technical solution, an oil mark is also embedded on the side wall of the gear box.

[0015] The beneficial effect of the above technical solution is that the liquid level of the lubricating oil in the gear box can be observed through the oil gauge.

[0016] The gearbox in the above technical solution includes a gearbox body, an upper end cover and a lower end cover, the left and right sides of the upper end of the gearbox body have two relatively distributed first through holes, the left and right sides of the lower end of the gearbox body have two relatively distributed second through holes, the first gear shaft is coaxially rotatably connected with the two first through holes, the upper end cover is installed at one of the first through holes, the third gear shaft is coaxially rotatably connected with the two second through holes, and the lower end cover is installed at one of the second through holes, and one end of the third gear shaft passes through the other second through hole to the outside of the gearbox.

[0017] The beneficial effects of the above technical solution are: its structure is simple and easy to assemble.

[0018] In the above technical solution, the gearbox further includes a bottom end cover, and a third through hole is further provided at the lower end of the gearbox body, and the bottom end cover is installed at the third through hole.

[0019] The beneficial effect of the above technical solution is that the bottom end cover can be opened to discharge the residue in the gear box.

[0020] In the above technical solution, fourth through holes corresponding to the second gear shaft are provided in the middle of the left and right sides of the gear box body, and the two ends of the second gear shaft pass through the corresponding fourth through holes respectively. One end of the second gear shaft is connected to the gear box body, and the other end of the second gear shaft is located in the corresponding fourth through hole, and a bowl-shaped plug 9 is embedded in the fourth through hole.

[0021] The beneficial effect of the above technical solution is that it makes it more convenient to install the second gear shaft on the gear box.

[0022] A second object of the present invention is to provide a tractor with a simple structure and high ground clearance.

[0023] In order to achieve the above-mentioned purpose, another technical solution of the present invention is as follows: A tractor comprises the high ground clearance gearbox assembly as described above.

[0024] The beneficial effects of the above technical solution are: it has a simple structure and a large ground clearance, and is suitable for tillage operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view of the high ground clearance gearbox assembly with two idler gears in an embodiment of the present invention;

[0026] Figure 2 Another cross-sectional view of the high ground clearance gearbox assembly with two idler gears in an embodiment of the present invention;

[0027] Figure 3 This is a front view of the high ground clearance gearbox assembly with two idler gears in an embodiment of the present invention;

[0028] Figure 4 A side view of the high ground clearance gearbox assembly with two idler gears in an embodiment of the present invention;

[0029] Figure 5 Another side view of the high ground clearance gearbox assembly with two idler gears in an embodiment of the present invention;

[0030] Figure 6 This is a cross-sectional view of the high ground clearance gearbox assembly when there is only one idler gear in an embodiment of the present invention;

[0031] Figure 7 This is a side view of the high ground clearance gearbox assembly when there is only one idler gear in an embodiment of the present invention;

[0032] Figure 8 This is another side view of the high ground clearance gearbox assembly when there is only one idler gear in the embodiment of the present invention.

[0033] In the figure: 1. Gearbox; 11. Gearbox body; 12. Upper end cover; 13. Lower end cover; 14. First through hole; 15. Second through hole; 16. Bottom end cover; 17. Third through hole; 18. Fourth through hole; 19. Bowl plug; 2. Driving gear; 21. First gear shaft; 3. Idle gear; 31. Second gear shaft; 4. Driven gear; 41. Third gear shaft; 5. Drive wheel connecting plate; 51. Drive wheel connecting bolt; 6. Breather; 7. Oil mark; 81. Oil drain hole; 82. Oil drain bolt; 83. Oil filling hole; 84. Oil filling bolt. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will be more clearly described according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in exact proportions. They are only used to facilitate and clearly illustrate the purpose of the embodiments of the present invention.

[0035] Example 1

[0036] like Figure 1-Figure 7 As shown, this embodiment provides a high ground clearance gearbox assembly, including a vertically arranged gearbox 1 and a driving gear 2, an idler gear 3 and a driven gear 4 that are sequentially rotated in the up and down directions in the gearbox 1, the driving gear 2 and the driven gear 4 are both meshed with the idler gear 3, the driving gear 2 has a first gear shaft 21 that is coaxially fixed, the idler gear 3 has a second gear shaft 31 that is coaxially arranged, and the driven gear 4 has a third gear shaft 41 that is coaxially fixed, the first gear shaft 21, the second gear shaft 31 and the third gear shaft 41 are all horizontally arranged in the left and right directions, the first gear shaft 21 is used to input power, and one end of the third gear shaft 41 horizontally extends to the outside of the gearbox 1 to form a wheel axle, so that the idler gear can be placed between the driving gear and the driven gear to make the driven gear sink relative to the driving gear, so that the wheel axle can be moved downward relative to the chassis, so that the gearbox assembly has a higher ground clearance.

[0037] like Figures 1-6As shown, in this embodiment, two idle gears 3 are provided, and the two idle gears 3 are spaced apart along the front-to-back direction between the driven gear 4 and the driving gear 2, and the driving gear 2 and the driven gear 4 are respectively engaged with the two idle gears 3. By providing two idle gears, the stability and reliability of the transmission system in the gear box are improved.

[0038] In the above technical solution, the second gear shaft 31 is coaxially connected to the idler gear 3, and the second gear shaft 31 is fixedly connected to the gear box 1, so that the second gear shaft can be fixedly installed relative to the gear box, and its installation is more convenient and reliable.

[0039] In the above technical solution, a drive wheel connecting plate 5 is coaxially arranged at one end of the third gear shaft 41 located outside the gear box 1, and a plurality of drive wheel connecting bolts 51 are evenly spaced circumferentially on the drive wheel connecting plate 5, and the drive wheel connecting bolts 51 are located on the side of the drive wheel connecting plate 5 away from the third gear shaft 41, and the drive wheel connecting bolts 51 are arranged perpendicular to the drive wheel connecting plate 5, so that the wheel can be installed on the drive wheel connecting plate more conveniently.

[0040] In the above technical solution, a respirator 6 is further embedded at the upper end of the gear box 1, and the respirator 6 is used to balance the pressure inside the gear box 1 with the pressure outside, so that the internal and external pressures of the gear box can be kept consistent.

[0041] In the above technical solution, an oil mark 7 is also embedded on the side wall of the gear box 1, so that the liquid level of the lubricating oil in the gear box can be observed through the oil mark.

[0042] The gearbox 1 in the above technical solution includes a gearbox body 11, an upper end cover 12 and a lower end cover 13. The left and right sides of the upper end of the gearbox body 11 have two relatively distributed first through holes 14, and the left and right sides of the lower end of the gearbox body 11 have two relatively distributed second through holes 15. The first gear shaft 21 is coaxially rotatably connected with the two first through holes 14, and the upper end cover 12 is installed at one of the first through holes 14. The third gear shaft 41 is coaxially rotatably connected with the two second through holes 15, and the lower end cover 13 is installed at one of the second through holes 15. One end of the third gear shaft 41 passes through the other second through hole 15 to the outside of the gearbox 1. Its structure is simple and easy to assemble.

[0043] In the above technical solution, the gearbox 1 further includes a bottom end cover 16. A third through hole 17 is further provided at the lower end of the gearbox body 11. The bottom end cover 16 is installed at the third through hole 17. In this way, the bottom end cover can be opened to discharge the residue in the gearbox.

[0044] In the above technical solution, fourth through holes 18 corresponding to the second gear shaft 31 are provided in the middle of the left and right sides of the gear box body 11, and the two ends of the second gear shaft 31 pass through the corresponding fourth through holes 18 respectively. One end of the second gear shaft 31 is connected to the gear box body 11, and the other end of the second gear shaft 31 is located in the corresponding fourth through hole 18, and a bowl-shaped plug 19 is embedded in the fourth through hole 18, which makes it more convenient to install the second gear shaft on the gear box.

[0045] Of course, if Figure 6-Figure 8 As shown, in this embodiment, only one idler gear may be provided.

[0046] In this embodiment, the breather is arranged at the upper end of the gear box body, and the oil mark is arranged on the side wall of the gear box body. In this embodiment, the oil drain hole 81 can be arranged on the bottom cover plate, and the refueling hole 83 can be arranged at the upper end of the gear box body. The oil drain hole and the refueling hole are both threaded holes. An oil drain bolt 82 can be threadedly connected to the oil drain hole, and a refueling bolt 84 can be threadedly connected to the refueling hole.

[0047] In this embodiment, the first gear shaft can be a tubular shaft, and it is preferably formed as one piece with the driving gear. In this embodiment, bearings can be provided at the rotational connections between the first gear shaft and the third gear shaft and the gear box, and bearings can also be provided at the rotational connection between the idle gear and the second gear shaft.

[0048] Example 2

[0049] This embodiment provides a tractor, including the high-ground-clearance gearbox assembly as described in Example 1, which has a simple structure and a large ground clearance, and is suitable for tillage operations.

[0050] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A high ground clearance gearbox assembly, characterized in that: The invention comprises a vertically arranged gear box (1) and a driving gear (2), an idler gear (3) and a driven gear (4) which are arranged in sequence in an up-down direction in the gear box (1). The driving gear (2) and the driven gear (4) are meshed with the idler gear (3). The driving gear (2) has a first gear shaft (21) which is fixedly arranged coaxially, the idler gear (3) has a second gear shaft (31) which is fixedly arranged coaxially, and the driven gear (4) has a third gear shaft (41) which is fixedly arranged coaxially. The first gear shaft (21), the second gear shaft (31) and the third gear shaft (41) are all arranged horizontally in the left-right direction. The first gear shaft (21) is used for inputting power, and one end of the third gear shaft (41) is horizontally extended out of the gear box (1) to form a wheel shaft.

2. The high ground clearance gearbox assembly according to claim 1, characterized in that: Two idler gears (3) are provided, and the two idler gears (3) are spaced apart and distributed along the front-to-back direction between the driven gear (4) and the driving gear (2), and the driving gear (2) and the driven gear (4) are respectively meshed with the two idler gears (3).

3. The high ground clearance gearbox assembly according to claim 1, characterized in that: The second gear shaft (31) is coaxially rotatably connected to the idler gear (3), and the second gear shaft (31) is fixedly connected to the gear box (1).

4. The high ground clearance gearbox assembly according to claim 1, characterized in that: A driving wheel connecting disc (5) is coaxially arranged on one end of the third gear shaft (41) located outside the gear box (1); a plurality of driving wheel connecting bolts (51) are evenly spaced circumferentially on the driving wheel connecting disc (5); the driving wheel connecting bolts (51) are located on a side of the driving wheel connecting disc (5) facing away from the third gear shaft (41); and the driving wheel connecting bolts (51) are arranged perpendicular to the driving wheel connecting disc (5).

5. The high ground clearance gearbox assembly according to claim 1, characterized in that: A respirator (6) is also embedded at the upper end of the gear box (1), and the respirator (6) is used to maintain a balance between the pressure inside the gear box (1) and the outside world.

6. The high ground clearance gearbox assembly according to claim 1, characterized in that: An oil mark (7) is also embedded on the side wall of the gear box (1).

7. The high ground clearance gearbox assembly according to claim 1, characterized in that: The gearbox (1) comprises a gearbox body (11), an upper end cover (12) and a lower end cover (13); the upper end of the gearbox body (11) has two first through holes (14) arranged opposite to each other on the left and right sides; the lower end of the gearbox body (11) has two second through holes (15) arranged opposite to each other on the left and right sides; the first gear shaft (21) is coaxially rotatably connected to the two first through holes (14); the upper end cover (12) is mounted at one of the first through holes (14); the third gear shaft (41) is coaxially rotatably connected to the two second through holes (15); the lower end cover (13) is mounted at one of the second through holes (15); one end of the third gear shaft (41) passes through the other second through hole (15) to the outside of the gearbox (1).

8. The high ground clearance gearbox assembly according to claim 7, characterized in that: The gearbox (1) further comprises a bottom end cover (16), a third through hole (17) is further provided at the lower end of the gearbox body (11), and the bottom end cover (16) is mounted at the third through hole (17).

9. The high ground clearance gearbox assembly according to claim 7, characterized in that: A fourth through hole (18) corresponding to the second gear shaft (31) is provided in the middle of the left and right sides of the gear box body (11), and both ends of the second gear shaft (31) pass through the corresponding fourth through holes (18), one end of the second gear shaft (31) is connected to the gear box body (11), and the other end of the second gear shaft (31) is located in the corresponding fourth through hole (18), and a bowl-shaped plug (19) is embedded in the fourth through hole (18).

10. A tractor, characterized in that: It comprises a high ground clearance gearbox assembly as described in any one of claims 1 to 9.

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