Small walking gearbox for agricultural transport vehicle

Abstract

A small walking gearbox for an agricultural transport vehicle relates to the technical field of gearboxes and comprises a box body, and a first power input shaft, a second power transmission shaft, a third power transmission shaft, a fourth power transmission shaft and a fifth power output shaft are arranged in the box body. The first power input shaft and the fifth power output shaft are vertically arranged, and a gear set connecting the first power input shaft, the second power transmission shaft, the third power transmission shaft, the fourth power transmission shaft and the fifth power output shaft is further arranged in the box body. The gearbox solves the problems that a gearbox in the prior art is only suitable for longitudinal arrangement of an engine output shaft, and when the engine output shaft is transversely arranged, the direction of the gearbox needs to be changed or other reversing structures need to be added, so that the power output stability is affected.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically to a small walking gearbox for agricultural transport vehicles. Background Technology

[0002] Existing agricultural transport vehicle gearboxes generally follow the design of engineering machinery gearboxes. The gearboxes typically have the input shaft, drive shaft, and output shaft arranged from top to bottom, while the engine output shaft is arranged longitudinally.

[0003] As existing devices are used, the shortcomings of this technology have gradually become apparent, mainly in the following aspects:

[0004] First, existing gearboxes are only suitable for vehicles with longitudinally arranged engine output shafts. When the engine output shaft is arranged laterally, or in vehicles where the drive axle requires longitudinal input, or in other equipment where the input and output are arranged at 90°, the gearbox direction needs to be reversed or other reversing structures need to be added, which affects the stability of power output.

[0005] Secondly, due to the existing engine's transverse orientation, the front cross-sectional area is large, resulting in a large surface bump and high wind resistance.

[0006] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a small walking gearbox for agricultural transport vehicles, which solves the problem that traditional gearboxes are only suitable for longitudinally arranged engine output shafts. When the engine output shaft is arranged laterally, the gearbox direction needs to be reversed or other reversing structures need to be added, which affects the stability of power output.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A small drive gearbox for agricultural transport vehicles includes a housing, within which are housed a power input shaft, a power transmission shaft, a power transmission shaft, a power transmission shaft, a power output shaft, and a power output shaft. The cross-sections of the power input shaft, power transmission shaft, and power transmission shaft are arranged in a triangular pattern, and the power input shaft and the power output shaft are arranged perpendicularly.

[0010] The housing is also equipped with a gear set that connects the power input shaft one, power transmission shaft two, power transmission shaft three, power transmission shaft four, and power output shaft five.

[0011] As an optimized solution, the gear set includes a first gear and a second gear connected to the first power input shaft.

[0012] As an optimized solution, the gear set includes a connecting gear three, a gear four, a gear five, and a gear six connected to the power transmission shaft two; the three connecting gears mesh with the gear two; and the small gear of the connecting gear three meshes with the gear one.

[0013] As an optimized solution, the gear set includes gear seven, gear eight, and connecting gear nine connected to the power transmission shaft three; the large gear of connecting gear nine meshes with gear six; the small gear of connecting gear nine meshes with gear five; and gear eight meshes with gear four.

[0014] As an optimized solution, the gear set includes a gear ten and a bevel gear eleven connected to the power transmission shaft four; the gear seven meshes with the gear ten.

[0015] As an optimized solution, the gear set includes a bevel gear twelve connected to the output shaft five; the bevel gear twelve meshes with the bevel gear eleven.

[0016] As an optimized solution, the housing is equipped with high and low speed shift forks, which drive the connecting gear to slide and adjust its position.

[0017] As an optimized solution, the housing is provided with a second and third gear shift fork, which drives the connecting gear nine to slide and adjust its position.

[0018] As an optimized solution, the housing is provided with a reverse gear fork, which drives the gear eight to slide and adjust its position.

[0019] As an optimized solution, one end of the power input shaft is connected to a clutch.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This product offers a small-sized transmission for agricultural transport vehicles. The input, drive, and output shafts are arranged at a 90° angle, making it suitable for vehicles with a transversely positioned engine output shaft and a longitudinally driven axle. The longitudinal engine placement reduces the front cross-sectional area, allowing for a more streamlined vehicle cover design and lower wind resistance.

[0022] This invention provides a small-sized drive gearbox for agricultural transport vehicles. The gearbox features a top-to-bottom arrangement of the power input shaft and drive shaft, with the power output shaft arranged perpendicularly. This compact shaft arrangement results in a simple and efficient power transmission relationship. The gearbox also boasts a simple structure, easy assembly, and low cost. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model viewed from the left.

[0026] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the high and low speed shift fork, the second and third speed shift fork, and the reverse gear shift fork of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the drive shift fork of this utility model;

[0029] Figure 6 This is a schematic diagram of the sliding clutch sleeve of this utility model in the disengaged state;

[0030] Figure 7 This is a schematic diagram of the sliding clutch sleeve of this utility model in the engaged state.

[0031] In the diagram: 1-Power input shaft one; 1.1 Bearing one; 1.2 Gear one; 1.3 Gear two; 2-Power transmission shaft two; 2.1 Bearing two; 2.2 Connecting gear three; 2.3 Gear four; 2.4 Gear five; 2.5 Gear six; 3-Power transmission shaft three; 3.1 Bearing three; 3.2 Gear seven; 3.3 Gear eight; 3.4 Connecting gear nine; 4-Power transmission shaft four; 4.1 Bearing four; 4.2 Gear ten; 4.3 Bevel gear eleven; 5-Power output shaft five 5.1-Bearing 5; 5.2-Bevel gear 12; 5.3-Driven shaft; 5.4-Drive shaft; 5.5-Sliding clutch sleeve; 5.6-Bearing; 5.7-Stop snap ring; 6-Box housing; 6.1-High and low speed shift forks; 6.2-Second and third speed shift forks; 6.3-Reverse gear shift fork; 6.4-Drive shift fork; 6.5-Slide rod 1; 6.6-Slide rod 2; 6.7-Slide rod 3; 6.8-Slide rod 4; 7-Connecting plate; 8-Handbrake; 9-Gear lever; 10-Crank handle; 11-Top cover; 12-Clutch. Detailed Implementation

[0032] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0033] like Figures 1 to 7 As shown, a small drive gearbox for agricultural transport vehicles includes a housing 6. Inside the housing 6 are a power input shaft 1, a power transmission shaft 2, a power transmission shaft 3, a power transmission shaft 4, and a power output shaft 5. The shaft sections of the power input shaft 1, power transmission shaft 2, and power transmission shaft 3 are arranged in a triangular configuration. The power input shaft 1 and the power output shaft 5 are arranged perpendicularly.

[0034] The housing 6 also contains a gear set that connects the power input shaft 1, the power transmission shaft 2, the power transmission shaft 3, the power transmission shaft 4, and the power output shaft 5.

[0035] The gear set includes gear 1.2 and gear 1.3 connected to the power input shaft 1.

[0036] The gear set includes connecting gear 2.2, gear 2.3, gear 2.4 and gear 2.5 connected to the power transmission shaft 2; the large gear of connecting gear 2.2 meshes with gear 2.3; the small gear of connecting gear 2.2 meshes with gear 1.2.

[0037] The gear set includes gear 7 3.2, gear 8 3.3 and connecting gear 9 3.4 connected to the power transmission shaft 3 3; the large gear of connecting gear 9 3.4 meshes with gear 6 2.5; the small gear of connecting gear 9 3.4 meshes with gear 5 2.4; gear 8 3.3 meshes with gear 4 2.3.

[0038] The gear set includes gear 10 and bevel gear 114.3 connected to the power transmission shaft 4; gear 73.2 meshes with gear 10.

[0039] The gear set includes a bevel gear 12 5.2 connected to the output shaft 5; the bevel gear 12 5.2 meshes with the bevel gear 11 4.3.

[0040] The housing 6 is equipped with a high-low speed shift fork 6.1, which drives the connecting gear 2.2 to adjust the sliding position.

[0041] The housing 6 is equipped with a second and third gear shift fork 6.2, which drives the connecting gear 9 3.4 to slide and adjust the position.

[0042] The housing 6 is equipped with a reverse gear fork 6.3, and the reverse gear fork 6.3 drives the gear 8.3.3 to slide and adjust its position.

[0043] One end of the power input shaft 1 is connected to a clutch.

[0044] The power input shaft 1 can be connected to the engine via clutch 1.2 to input power.

[0045] The power output shaft 5 of this utility model is equipped with a connecting plate 7 and a handbrake 8, which are connected to the drive shaft to provide power to the walking device; the power output shaft 1 also has an output function and can provide power to other tooling devices.

[0046] The present invention provides bearings 1.1 on both sides of the power input shaft 1 of the gearbox, and uses the bearings 1.1 to assemble the power input shaft 1 onto the housing 6.

[0047] Bearings 2.1 are installed on both sides of the power transmission shaft 2, and the power transmission shaft 2 is assembled onto the housing 6 through the bearings 2.1.

[0048] Bearings 3.1 are installed on both sides of the power transmission shaft 3.1, and the power transmission shaft 3.1 is assembled onto the housing 6 through the bearings 3.1.

[0049] Bearings 4.1 are installed on both sides of the power transmission shaft 4, and the power transmission shaft 4 is assembled onto the housing 6 through the bearings 4.1.

[0050] Bearings 5.1 are installed on both sides of the power output shaft 5, and the power output shaft 5 is assembled onto the housing 6 through the bearings 5.1.

[0051] The gearbox housing 6 of this utility model is provided with three sets of slide rods and shift forks on its upper side, including high and low speed shift forks 6.1, second and third speed shift forks 6.2, reverse gear shift forks 6.3, slide rod one 6.5, slide rod two 6.6, and slide rod three 6.7. A gear lever 9 and a crank handle 10 are provided on the upper side, and the gear lever 9 and crank handle 10 are mounted on the housing 6 through an upper cover 11.

[0052] The high / low speed shift fork 6.1 changes the position of the connecting gear 3 2.2 to achieve high / low speed output; the second / third speed shift fork 6.2 changes the position of the connecting gear 9 3.4 to achieve second / third speed output; and the reverse gear shift fork 6.3 changes the position of gear 8 3.3 to achieve reverse gear output.

[0053] The working process of this device is as follows:

[0054] When the transmission outputs at low speed, gears 2 (1.3) and 3 (2.2), the large gear, are constantly meshed; gears 7 (3.2) and 10 (4.2), the small gear, are constantly meshed; and bevel gears 11 (4.3) and 12 (5.2), the large gear, are constantly meshed. When the transmission outputs at high speed, gears 1 (1.2) and 3 (2.2), the small gear, the small gear, are constantly meshed; gears 7 (3.2) and 10 (4.2), the small gear, the small gear, are constantly meshed. When the transmission outputs second gear, gear 6 (2.5) and 9 (3.4), the large gear, are constantly meshed. When the transmission outputs third gear, gear 5 (2.4) and 9 (3.4), the small gear, are constantly meshed.

[0055] When the gearbox of this utility model is in low gear (first gear), the high / low speed shift fork 6.1 is activated, causing gear 2 1.3 to mesh with the large gear of connecting gear 3 2.2, gear 4 2.3 to mesh with gear 8 3.3, gear 7 3.2 to mesh with gear 10 4.2, and bevel gear 11 to mesh with bevel gear 12.

[0056] Power transmission relationship: The engine's power is transmitted to the power input shaft 1 through clutch 12, and then to the power transmission shaft 2 through the meshing of gear 2 (1.3) and the large gear of gear 3 (2.2). Power is transmitted to the power transmission shaft 3 through the meshing of gear 4 (2.3) and gear 8 (3.3). Power is transmitted to the power transmission shaft 4 through the meshing of gear 7 (3.2) and gear 10 (4.2). Power is transmitted to the power output shaft 5 through the meshing of bevel gear 11 and bevel gear 12, which then transmits power to the drive axle, providing power for the vehicle's movement.

[0057] When the gearbox of this utility model is in low speed second gear, the high / low speed shift fork 6.1 and the second / third gear shift fork 6.2 are engaged, gear 2 1.3 and connecting gear 3 2.2 large gear are engaged, gear 6 2.5 and connecting gear 9 3.4 large gear are engaged, gear 7 3.2 and gear 10 4.2 are engaged, and bevel gear 11 and bevel gear 12 are engaged.

[0058] Power transmission relationship: Engine power is transmitted to power input shaft 1 through clutch 12, and then to power transmission shaft 2 through the meshing of gear 2 (1.3) and connecting gear 3 (2.2). Power is transmitted to power transmission shaft 3 through the meshing of gear 6 (2.5) and connecting gear 9 (3.4). Power is transmitted to power transmission shaft 4 through the meshing of gear 7 (3.2) and gear 10 (4.2). Power is transmitted to power output shaft 5 through the meshing of bevel gear 11 and bevel gear 12, which then transmits power to the drive axle to provide power for vehicle movement.

[0059] When the gearbox of this utility model is in low speed third gear, the high and low speed shift fork 6.1 and the second and third gear shift fork 6.2 are activated, gear 2 1.3 and connecting gear 3 2.2 large gear mesh, gear 5 2.4 and connecting gear 9 3.4 small gear mesh, gear 7 3.2 and gear 10 4.2 mesh, and bevel gear 11 and bevel gear 12 mesh.

[0060] Power transmission relationship: Engine power is transmitted to power input shaft 1 through clutch 12, and then to power transmission shaft 2 through the meshing of gear 2 (1.3) and connecting gear 3 (2.2). Power is transmitted to power transmission shaft 3 through the meshing of gear 5 (2.4) and connecting gear 9 (3.4). Power is transmitted to power transmission shaft 4 through the meshing of gear 7 (3.2) and gear 10 (4.2). Power is transmitted to power output shaft 5 through the meshing of bevel gear 11 and bevel gear 12, and then to the drive axle to provide power for vehicle movement.

[0061] When the gearbox of this utility model is in high speed first gear, the high and low speed shift fork 6.1 is moved to make gear 1.2 mesh with the pinion of gear 3 2.2, gear 4 2.3 mesh with gear 8 3.3, gear 7 3.2 mesh with gear 10 4.2, and bevel gear 11 mesh with bevel gear 12.

[0062] Power transmission relationship: Engine power is transmitted to power input shaft 1 through clutch 12, and then to power transmission shaft 2 through the meshing of gear 1.2 and pinion 2.2. Power is transmitted to power transmission shaft 3 through the meshing of gear 4.2.2 and gear 8.3. Power is transmitted to power transmission shaft 4 through the meshing of gear 7.2 and gear 10.4.2. Power is transmitted to power transmission shaft 4 through the meshing of bevel gear 11 and bevel gear 12. Power output shaft 5 then transmits power to the drive axle, providing power for the vehicle's movement.

[0063] When the transmission of this utility model is in high speed second gear, the high / low speed shift fork 6.1 and the second / third gear shift fork 6.2 are engaged, gear 1.2 and connecting gear 3.2 (small gear) mesh, gear 6.2.5 and connecting gear 9.3.4 (large gear) mesh, gear 7.3.2 and gear 10.4.2 mesh, and bevel gear 11 and bevel gear 12 mesh.

[0064] Power transmission relationship: The engine's power is transmitted to the power input shaft 1 through clutch 12, and then to the power transmission shaft 2 through the meshing of gear 1.2 and the pinion of gear 3.2. Power is transmitted to the power transmission shaft 3 through the meshing of gear 6.2.5 and the large gear of gear 9.4. Power is transmitted to the power transmission shaft 4 through the meshing of gear 7.2 and gear 10.2. Power is transmitted to the power output shaft 5 through the meshing of bevel gear 11 and bevel gear 12, which then transmits power to the drive axle, providing power for the vehicle's movement.

[0065] When the gearbox of this utility model is in high speed third gear, the high and low speed shift fork 6.1 and the second and third gear shift fork 6.2 are activated, gear 1.2 and connecting gear 3.2.2 are engaged, gear 5.2.4 and connecting gear 9.3.4 are engaged, gear 7.2 and gear 10.4.2 are engaged, and bevel gear 11 and bevel gear 12 are engaged.

[0066] Power transmission relationship: Engine power is transmitted to power input shaft 1 through clutch 12, and then to power transmission shaft 2 through the meshing of gear 1.2 and pinion 2.2 of connecting gear 3. Power is transmitted to power transmission shaft 3 through the meshing of gear 5.2.4 and pinion 3.4 of connecting gear 9. Power is transmitted to power transmission shaft 3 through the meshing of gear 7.2 and gear 10.2 through the meshing of gear 11 and bevel gear 12. Power is transmitted to power output shaft 5 through the meshing of bevel gear 11 and bevel gear 12, which then transmits power to the drive axle to provide power for vehicle movement.

[0067] When the gearbox of this utility model is in reverse gear, the reverse gear fork 6.3 is activated to engage gear 2 1.3 and gear 8 3.3, gear 7 3.2 and gear 10 4.2, and bevel gear 11 and bevel gear 12.

[0068] Power transmission relationship: The engine's power is transmitted to the power input shaft 1 through clutch 12, and then to the power transmission shaft 3 through the meshing of gears 1.3 and 3.3. Power is then transmitted to the power transmission shaft 4 through the meshing of gears 3.2 and 4.2. Finally, power is transmitted to the power output shaft 5 through the meshing of bevel gears 11 and 12, which in turn transmits power to the drive axle, providing power for the vehicle's movement.

[0069] In this utility model of gearbox, the power output shaft 5 can be designed as a through shaft. The gearbox power output shaft 5 is equipped with a connecting disc 7, a handbrake 8 and connected to the drive shaft to provide power to the walking device, which is a four-wheel drive.

[0070] In this utility model of a gearbox, the power output shaft 5 can be designed as a drive shaft 5.4 and a driven shaft 5.3. A gear 12 5.2 is mounted on the drive shaft 5.4, and a bearing 5.6 is installed at the intermediate connection. An involute spline is designed on the outer diameter of the connection between the drive shaft 5.4 and the driven shaft 5.3, and a sliding clutch sleeve 5.5 is mounted on the spline. The sliding clutch sleeve 5.5 has an internal spline and a shift fork groove on its exterior. The gearbox housing 6 is equipped with a drive fork 6.4 and a sliding rod 6.8. The sliding clutch sleeve 5.5 is moved by moving the drive fork 6.4. When the drive fork 6.4 moves the sliding clutch sleeve 5.5 to the left, the sliding clutch sleeve 5.5 only engages with the driven shaft 5.3, and power is not transmitted to the driven shaft 5.3. Power can only be transmitted from the right end of the drive shaft 5.4 and then through the transmission components to the front or rear axle, achieving two-wheel drive for the vehicle.

[0071] When the drive fork 6.4 moves the sliding clutch sleeve 5.5 to the right, the sliding clutch sleeve 5.5 simultaneously engages with the drive shaft 5.4 and the driven shaft 5.3. Power is transmitted to the driven shaft 5.3 through the spline sleeve. At this time, the power is transmitted from the left end of the driven shaft 5.3 and the right end of the drive shaft 5.4, and then transmitted to the front and rear axles through the transmission components, realizing four-wheel drive of the vehicle.

[0072] The half-shafts 5.3 and 5.4 are designed with external splines, and the sliding sleeve 5.5 is designed with internal splines. The drive fork 6.4 controls the movement of the sliding sleeve 5.5, so that the sliding sleeve 5.5 is connected to the two half-shafts 5.3 and 5.4 respectively or simultaneously, providing power to the walking device and realizing two-wheel drive or four-wheel drive.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A small drive gearbox for agricultural transport vehicles, characterized in that: The device includes a housing (6), which contains a power input shaft (1), a power transmission shaft (2), a power transmission shaft (3), a power transmission shaft (4), and a power output shaft (5). The shaft sections of the power input shaft (1), the power transmission shaft (2), and the power transmission shaft (3) are arranged in a triangular configuration, and the power input shaft (1) and the power output shaft (5) are arranged perpendicularly to each other. The housing (6) is also equipped with a gear set that connects the power input shaft one (1), the power transmission shaft two (2), the power transmission shaft three (3), the power transmission shaft four (4) and the power output shaft five (5).

2. The small drive gearbox for agricultural transport vehicles according to claim 1, characterized in that: The gear set includes a first gear (1.2) and a second gear (1.3) connected to the first power input shaft (1).

3. The small drive gearbox for agricultural transport vehicles according to claim 2, characterized in that: The gear set includes a connecting gear three (2.2), a gear four (2.3), a gear five (2.4), and a gear six (2.5) connected to the power transmission shaft two (2); the large gear of the connecting gear three (2.2) meshes with the gear two (1.3); the small gear of the connecting gear three (2.2) meshes with the gear one (1.2).

4. The small drive gearbox for agricultural transport vehicles according to claim 3, characterized in that: The gear set includes gear seven (3.2), gear eight (3.3) and connecting gear nine (3.4) connected to the power transmission shaft three (3); the large gear of connecting gear nine (3.4) meshes with gear six (2.5); the small gear of connecting gear nine (3.4) meshes with gear five (2.4); and gear eight (3.3) meshes with gear four (2.3).

5. The small drive gearbox for agricultural transport vehicles according to claim 4, characterized in that: The gear set includes a gear ten (4.2) and a bevel gear eleven (4.3) connected to the power transmission shaft four (4); the gear seven (3.2) meshes with the gear ten (4.2).

6. The small drive gearbox for agricultural transport vehicles according to claim 5, characterized in that: The gear set includes a bevel gear 12 (5.2) connected to the output shaft 5; the bevel gear 12 (5.2) meshes with the bevel gear 11 (4.3).

7. The small drive gearbox for agricultural transport vehicles according to claim 3, characterized in that: The housing (6) is provided with a high-low speed shift fork (6.1), which drives the connecting gear three (2.2) to slide and adjust its position.

8. The small drive gearbox for agricultural transport vehicles according to claim 4, characterized in that: The housing (6) is provided with a second and third gear shift fork (6.2), which drives the connecting gear nine (3.4) to slide and adjust its position.

9. The small drive gearbox for agricultural transport vehicles according to claim 4, characterized in that: The housing (6) is provided with a reverse gear fork (6.3), which drives the gear eight (3.3) to slide and adjust its position.

10. The small drive gearbox for agricultural transport vehicles according to claim 1, characterized in that: One end of the power input shaft (1) is connected to a clutch (12).

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