Chassis transmission system of high-horsepower tractor

Abstract

The high-horsepower tractor chassis transmission system comprises an input shaft, a clutch power shaft and a power output intermediate shaft which are sequentially arranged, the input shaft is in meshed transmission connection with the end of the clutch power shaft, and the clutch power shaft is connected with the power output intermediate shaft through a rear clutch; the clutch power shaft is sleeved with an output shaft and an auxiliary speed change driving shaft, the side portions of the input shaft and the clutch power shaft are provided with an intermediate shaft and a bevel gear shaft which are parallel to the input shaft and the clutch power shaft, and the end, away from the intermediate shaft, of the bevel gear shaft is connected with a drive axle through a bevel gear. The input shaft is sequentially sleeved with a low-speed forward gear clutch, a high-speed forward gear clutch and a reverse gear clutch. According to the chassis transmission system of the high-horsepower tractor, power gear shifting can be achieved, the reversing smoothness is good, control is convenient, the chassis transmission system can better adapt to the working environment, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a chassis transmission system of a high-horsepower tractor, belonging to the technical field of transmission systems. Background Art

[0002] The development of tractor mechanical transmissions at home and abroad has evolved from a few gears to multiple gears. In order to meet the increasingly complex operating requirements of tractors while ensuring high power and fuel economy, multi-gear transmissions have the advantage. At present, tractor transmissions can achieve 24+8 gears, but with the increase in tractor gears, the operation has become more complicated.

[0003] At present, the forward and reverse movement, rear power output and cut-off of high-horsepower tractors are generally controlled by manual shifting, which has poor switching smoothness, increases the cumbersomeness of driving the tractor for the driver, and reduces production efficiency.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] The present invention aims at the deficiencies in the background technology and provides a high-horsepower tractor chassis transmission system, which can realize power shifting, has good switching smoothness, is easy to control, can better adapt to the working environment, and improves production efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A high-horsepower tractor chassis transmission system comprises an input shaft, a clutch power shaft and a power output intermediate shaft which are arranged in sequence, wherein the input shaft is meshed and transmission-connected with the end of the clutch power shaft, and the clutch power shaft is connected with the power output intermediate shaft via a rear clutch; the clutch power shaft is sleeved with an output shaft and a secondary speed change driving shaft, and the sides of the input shaft and the clutch power shaft are provided with intermediate shafts and bevel gear shafts which are parallel thereto, and the end of the bevel gear shaft away from the intermediate shaft is connected with a drive axle via a bevel gear; the input shaft is sleeved with a low-speed forward gear clutch, a high-speed forward gear clutch and a reverse gear clutch in sequence.

[0007] Furthermore, the low-speed forward gear clutch and the high-speed forward gear clutch are respectively connected to the forward gear driving gears on the opposite outer sides, and the forward gear driving gears include a low-speed forward gear driving gear and a high-speed forward gear driving gear; a working chamber is provided inside the reverse gear clutch, and the reverse gear driving gear is connected to the end of the reverse gear clutch away from the high-speed forward gear clutch.

[0008] Furthermore, a forward gear driven gear, a reverse gear driven gear, a fourth gear driving gear, a third gear driving gear, a second gear driving gear and a first gear driving gear are sequentially mounted on the intermediate shaft.

[0009] Further, the number of forward gear driven gears is two, and the forward gear driven gears are meshed and connected with the forward gear driving gear; The number of reverse gear driven gears is one, and the reverse gear driven gear is drivingly connected with the reverse gear driving gear through an idle gear; Engaging sleeves that can slide left and right are installed between the fourth gear driving gear and the third gear driving gear, between the second gear driving gear, and between the first gear driving gear.

[0010] Further, a fourth gear driven gear, a third gear driven gear, a second gear driven gear, and a first gear driven gear are fixedly installed on the output shaft in sequence.

[0011] Further, an A gear driving gear, a B gear driving gear, a C gear driving gear, and a D gear driving gear are installed on the auxiliary transmission driving shaft, and an engaging sleeve that can slide left and right is installed between the C gear driving gear and the D gear driving gear.

[0012] Further, an A gear driven gear, a B gear driven gear, a C gear driven gear, and a D gear driven gear are installed on the bevel gear shaft, and an engaging sleeve that can slide left and right is installed between the A gear driven gear and the B gear driven gear.

[0013] Further, a four-wheel drive gear is fixedly installed at a position near the end of the bevel gear shaft, and the four-wheel drive gear is drivingly connected with the transfer case through an idle gear.

[0014] Further, a power output transmission shaft parallel to the power output intermediate shaft is installed on the side of the power output intermediate shaft; a high-low gear driving double gear is fixedly installed on the power output intermediate shaft, a power output high gear driven gear and a power output low gear driven gear are rotatably installed on the power output transmission shaft, the power output high gear driven gear and the power output low gear driven gear are meshed with the high-low gear driving double gear, and an engaging sleeve that can slide left and right is installed between the power output high gear driven gear and the power output low gear driven gear.

[0015] Further, an ultra-low gear clutch is installed on the inner ends of the output shaft and the auxiliary transmission driving shaft facing each other.

[0016] After the present invention adopts the above technical solutions, compared with the prior art, it has the following advantages: The present invention arranges the power reversing part at the front end position of the chassis, which can increase the output torque, thereby ensuring power output. The power reversing is realized by a clutch controlled by hydraulic oil. When the forward gear clutch works, it is in the forward state, and when the reverse gear clutch works, it is in the reverse state; The present invention realizes the output and cut-off of the rear power through a hydraulic oil controlled rear clutch; The present invention adopts power shift and multi-gear combination, changes the traditional mechanical shifting to power shifting, can realize the functions of power shifting and power reversing, has a clear transmission route and a compact structure. Under the working condition of large horsepower, using power reversing can reduce the torque of the load and has good reversing smoothness, which is convenient for control; the multi-gear combination can better adapt to the working environment and improve production efficiency. The transmission system provided by the present invention can overcome the disadvantages of manual shifting, making the operation more flexible and convenient, greatly reducing the burden on the staff and improving work efficiency.

[0017] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 is a schematic structural diagram of Embodiment 2 of the present invention; Figure 3 is a schematic diagram of the transmission principle of the present invention.

[0019] In the figures, 1 - input shaft, 2 - output shaft, 3 - auxiliary transmission main shaft, 4 - clutch power shaft, 5 - intermediate shaft, 6 - bevel gear shaft, 7 - low-speed forward gear clutch, 8 - forward gear driving gear, 9 - reverse gear clutch, 10 - reverse gear driving gear, 11 - forward gear driven gear, 12 - reverse gear driven gear, 13 - first gear driven gear, 14 - second gear driven gear, 15 - third gear driven gear, 16 - fourth gear driven gear, 17 - first gear driving gear, 18 - second gear driving gear, 19 - third gear driving gear, 20 - fourth gear driving gear, 21 - A gear driving gear, 22 - B gear driving gear, 23 - C gear driving gear, 24 - D gear driving gear, 25 - A gear driven gear, 26 - B gear driven gear, 27 - C gear driven gear, 28 - D gear driven gear, 29 - four-wheel drive gear, 30 - drive axle, 31 - rear clutch, 32 - high-low gear driving double gear, 33 - power output transmission shaft, 34 - power output high gear driven gear, 35 - power output low gear driven gear, 36 - power output intermediate shaft, 37 - high-speed forward gear clutch, 38 - ultra-low gear clutch. Detailed Embodiments

[0020] For a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0021] Embodiment 1 As Figure 1 and Figure 3As shown together, the present invention provides a chassis transmission system for a large-horsepower tractor, including an input shaft 1, a clutch power shaft 4, and a power take-off intermediate shaft 36 arranged in sequence. The input shaft 1 is meshed and drivingly connected to the end of the clutch power shaft 4, and the clutch power shaft 4 is connected to the power take-off intermediate shaft 36 through a rear clutch 31.

[0022] An output shaft 2 and a countershaft main drive shaft 3 are sleeved on the clutch power shaft 4. The output shaft 2 is arranged close to the input shaft 1. A countershaft 5 and a bevel gear shaft 6 parallel to them are arranged on the sides of the input shaft 1 and the clutch power shaft 4. The end of the bevel gear shaft 6 far from the countershaft 5 is connected to a drive axle 30 through a bevel gear to input power to the drive axle 30.

[0023] A low-speed forward gear clutch 7, a high-speed forward gear clutch 37, and a reverse gear clutch 9 are sequentially sleeved on the input shaft 1. Forward gear drive gears 8 are respectively connected to the opposite outer sides of the low-speed forward gear clutch 7 and the high-speed forward gear clutch 37. The forward gear drive gear 8 includes a low-speed forward gear drive gear and a high / low-speed forward gear drive gear; the forward gear is a Hi-Lo gear, and the setting of the Hi-Lo gear enables the vehicle to directly switch gears according to different road conditions and driving requirements during operation.

[0024] A working cavity is provided inside the reverse gear clutch 9, and a reverse gear drive gear 10 is connected to one end of the reverse gear clutch 9 far from the high-speed forward gear clutch 37.

[0025] In the present invention, the power reversing part is arranged at the front end of the chassis, which can increase the output torque and thus ensure the power output. The power reversing is realized by a clutch controlled by hydraulic oil. When the forward gear clutch works, it is in the forward state, and when the reverse gear clutch 9 works, it is in the reverse state.

[0026] A forward gear driven gear 11, a reverse gear driven gear 12, a fourth gear drive gear 20, a third gear drive gear 19, a second gear drive gear 18, and a first gear drive gear 17 are sequentially installed on the countershaft 5.

[0027] The number of the forward gear driven gears 11 is two, and the forward gear driven gears 11 are meshed and connected to the forward gear drive gear 8.

[0028] The number of the reverse gear driven gears 12 is one, and the reverse gear driven gear 12 is drivingly connected to the reverse gear drive gear 10 through an idler gear.

[0029] Engaging sleeves that can slide left and right are installed between the fourth gear drive gear 20 and the third gear drive gear 19, between the second gear drive gear 18, and the first gear drive gear 17.

[0030] The output shaft 2 is fixedly mounted with a fourth-gear driven gear 16, a third-gear driven gear 15, a second-gear driven gear 14 and a first-gear driven gear 13 arranged in sequence. The fourth-gear driven gear 16 is meshed with the fourth-gear driving gear 20, the third-gear driven gear 15 is meshed with the third-gear driving gear 19, the second-gear driven gear 14 is meshed with the second-gear driving gear 18, and the first-gear driven gear 13 is meshed with the first-gear driving gear 17.

[0031] The auxiliary transmission driving shaft 3 is provided with an A gear driving gear 21 , a B gear driving gear 22 , a C gear driving gear 23 and a D gear driving gear 24 , and a meshing sleeve that can slide left and right is provided between the C gear driving gear 23 and the D gear driving gear 24 .

[0032] The bevel gear shaft 6 is provided with an A gear driven gear 25, a B gear driven gear 26, a C gear driven gear 27 and a D gear driven gear 28. The A gear driven gear 25 meshes with the A gear driving gear 21, the B gear driven gear 26 meshes with the B gear driving gear 22, the C gear driven gear 27 meshes with the C gear driving gear 23, the D gear driven gear 28 meshes with the D gear driving gear 24, and a meshing sleeve that can slide left and right is installed between the A gear driven gear 25 and the B gear driven gear 26.

[0033] A four-wheel drive gear 29 is fixedly mounted on the bevel gear shaft 6 near its end, and the four-wheel drive gear 29 is drivingly connected to the transfer case through an idler gear.

[0034] The power output transmission shaft 33 is installed on the side of the power output intermediate shaft 36 and is arranged parallel to the power output intermediate shaft 36 .

[0035] A high and low gear driving double gear 32 is fixedly mounted on the power output intermediate shaft 36, and a power output high gear passive gear 34 and a power output low gear passive gear 35 are rotatably mounted on the power output transmission shaft 33. The power output high gear passive gear 34 and the power output low gear passive gear 35 are meshed with the high and low gear driving double gear 32, and a meshing sleeve that can slide left and right is installed between the power output high gear passive gear 34 and the power output low gear passive gear 35.

[0036] When the hydraulic oil controls the rear clutch 31, the power of the engine can be transmitted to the power output transmission shaft 33 through the input shaft 1, the clutch power shaft 4, and the power output intermediate shaft 36 to realize the rear power output. When the rear clutch 31 is not working, no output will be made.

[0037] Example 2 like Figure 2 As shown, the present invention provides a high-horsepower tractor chassis transmission system, and the difference between Example 2 and Example 1 is that: In Embodiment 2, an ultra-low gear clutch 38 is installed on the inner ends of the output shaft 2 and the auxiliary transmission main shaft 3 facing each other, while in Embodiment 1, the ultra-low gear clutch 38 is not installed on the inner ends of the output shaft 2 and the auxiliary transmission main shaft 3 facing each other.

[0038] When the ultra-low gear clutch 38 is installed, there are high and low gears when the hydraulic oil controls the ultra-low gear clutch 38 to work. When in high gear, a certain speed ratio is output to the rear axle, and when in low gear, a certain speed ratio is output to the rear axle.

[0039] The specific working principle of the present invention: Forward and reverse: The power reversing part is arranged at the front end position of the chassis, which can increase the output torque and thus ensure the power output. The power reversing is realized by a clutch controlled by hydraulic oil. When the forward gear clutch works, it is in the forward state, and when the reverse gear clutch works, it is in the reverse state.

[0040] Rear power: When the hydraulic oil controls the rear clutch, the power of the engine can be transmitted to the power output drive shaft through the input shaft, the clutch power shaft, and the power output intermediate shaft to achieve the rear power output. When the rear clutch does not work, there will be no output.

[0041] The present invention adopts power reversing and multi-gear combination, changing the traditional mechanical shifting to power shifting, which can realize the functions of power shifting and power reversing, with a clear transmission route and a compact structure. In the working state of large horsepower, using power reversing can reduce the torque of the load and has good reversing smoothness, being easy to control; the multi-gear combination can better adapt to the working environment and improve the production efficiency.

[0042] The transmission system provided by the present invention can overcome the disadvantages of manual shifting, making the operation more flexible and convenient, greatly reducing the burden on the staff, and improving the work efficiency.

[0043] The above is an example of the best implementation mode of the present invention, and the parts not described in detail are all common general knowledge of those skilled in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims

1. A large-horsepower tractor chassis transmission system, characterized in that: It includes an input shaft (1), a clutch power shaft (4), and a power output intermediate shaft (36) arranged in sequence. The input shaft (1) is meshed and drivingly connected to the end of the clutch power shaft (4), and the clutch power shaft (4) is connected to the power output intermediate shaft (36) through a rear clutch (31); an output shaft (2) and a countershaft main drive shaft (3) are sleeved on the clutch power shaft (4), and an intermediate shaft (5) and a bevel gear shaft (6) parallel to them are provided on the sides of the input shaft (1) and the clutch power shaft (4). The end of the bevel gear shaft (6) far from the intermediate shaft (5) is connected to the drive axle (30) through a bevel gear; a low-speed forward gear clutch (7), a high-speed forward gear clutch (37), and a reverse gear clutch (9) are sequentially sleeved on the input shaft (1).

2. The large-horsepower tractor chassis transmission system according to claim 1, characterized in that: Forward gear drive gears (8) are respectively connected to the outer sides facing each other of the low-speed forward gear clutch (7) and the high-speed forward gear clutch (37). The forward gear drive gears (8) include a low-speed forward gear drive gear and a high-speed forward gear drive gear; a working cavity is provided inside the reverse gear clutch (9), and a reverse gear drive gear (10) is connected to one end of the reverse gear clutch (9) far from the high-speed forward gear clutch (37).

3. A large-horsepower tractor chassis transmission system according to claim 1, characterized in that: A forward gear driven gear (11), a reverse gear driven gear (12), a fourth gear drive gear (20), a third gear drive gear (19), a second gear drive gear (18), and a first gear drive gear (17) are sequentially installed on the intermediate shaft (5).

4. The large-horsepower tractor chassis drive system according to claim 3, wherein: The number of the forward gear driven gears (11) is two, and the forward gear driven gears (11) are meshed and connected to the forward gear drive gears (8). The number of the reverse gear driven gears (12) is one, and the reverse gear driven gear (12) is drivingly connected to the reverse gear drive gear (10) through an idler gear. Sleeves that can slide left and right are installed between the fourth gear drive gear (20) and the third gear drive gear (19), between the second gear drive gear (18), and between the first gear drive gear (17).

5. A large-horsepower tractor chassis transmission system according to claim 1, characterized in that: A fourth gear driven gear (16), a third gear driven gear (15), a second gear driven gear (14), and a first gear driven gear (13) are fixedly installed on the output shaft (2) in sequence.

6. The large-horsepower tractor chassis transmission system according to claim 1, wherein: An A-gear drive gear (21), a B-gear drive gear (22), a C-gear drive gear (23), and a D-gear drive gear (24) are installed on the countershaft main drive shaft (3), and a sleeve that can slide left and right is installed between the C-gear drive gear (23) and the D-gear drive gear (24).

7. A large-horsepower tractor chassis drive system according to claim 1, characterized in that: An A-gear driven gear (25), a B-gear driven gear (26), a C-gear driven gear (27), and a D-gear driven gear (28) are installed on the bevel gear shaft (6), and a sleeve that can slide left and right is installed between the A-gear driven gear (25) and the B-gear driven gear (26).

8. The large-horsepower tractor chassis drive system according to claim 7, wherein: A four-wheel drive gear (29) is fixedly installed at a position near the end of the bevel gear shaft (6), and the four-wheel drive gear (29) is drivingly connected to the transfer case through an idler gear.

9. A large-horsepower tractor chassis transmission system according to claim 1, characterized in that: A power output transmission shaft (33) parallel to the side of the power output intermediate shaft (36) is installed on the side of the power output intermediate shaft (36); a high and low gear driving double gear (32) is fixedly installed on the power output intermediate shaft (36), a power output high gear driven gear (34) and a power output low gear driven gear (35) are rotatably installed on the power output transmission shaft (33), the power output high gear driven gear (34) and the power output low gear driven gear (35) are engaged with the high and low gear driving double gear (32), and a slidable engagement sleeve is installed between the power output high gear driven gear (34) and the power output low gear driven gear (35).

10. A large-horsepower tractor chassis transmission system according to claim 1, characterized in that: An ultra-low gear clutch (38) is installed on the inner ends of the output shaft (2) and the countershaft (3) facing each other.

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