Chassis transmission system of high-horsepower tractor

Abstract

The utility model discloses a high-horsepower tractor chassis transmission system which 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 portion 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, reversing smoothness is good, control is convenient, the chassis transmission system can better adapt to the working environment, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a high-horsepower tractor chassis transmission system, belonging to the field of transmission system technology. Background Technology

[0002] The development of mechanical transmissions for tractors, both domestically and internationally, is moving from a few gears to multiple gears. The advantage of multi-gear transmissions lies in meeting the increasingly complex operational requirements of tractors while maintaining high power and fuel economy. Currently, tractor transmissions can achieve 24+8 gear operation modes; however, with the increase in gears, operation has become more cumbersome.

[0003] Currently, the forward and reverse movement, as well as the output and cut-off of rear-mounted power, of high-horsepower tractors are generally controlled by manual gear shifting. This results in poor smoothness of directional changes, increases the cumbersomeness of driving the tractor for the driver, and reduces production efficiency.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a high-horsepower tractor chassis transmission system that enables power shifting, offers smooth reversing, facilitates control, and better adapts to the working environment, thereby improving production efficiency.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A high-horsepower tractor chassis transmission system includes an input shaft, a clutch power shaft, and a power output intermediate shaft arranged sequentially. The input shaft is meshed with the end of the clutch power shaft for transmission, and the clutch power shaft is connected to the power output intermediate shaft via a rear-mounted clutch. An output shaft and a secondary transmission drive shaft are mounted on the clutch power shaft. An intermediate shaft and a bevel gear shaft parallel to the input shaft and clutch power shaft are provided on their sides. The end of the bevel gear shaft away from the intermediate shaft is connected to the drive axle via a bevel gear. A low-speed forward clutch, a high-speed forward clutch, and a reverse clutch are sequentially mounted on the input shaft.

[0008] Furthermore, the low-speed forward clutch and the high-speed forward clutch are respectively connected to forward drive gears on their opposite outer sides, and the forward drive gears include a low-speed forward drive gear and a high-speed forward drive gear; the reverse clutch has a working chamber inside, and the end of the reverse clutch away from the high-speed forward clutch is connected to the reverse drive gear.

[0009] Furthermore, the intermediate shaft is sequentially equipped with a forward driven gear, a reverse driven gear, a fourth-speed drive gear, a third-speed drive gear, a second-speed drive gear, and a first-speed drive gear.

[0010] Furthermore, the number of forward gear driven gears is two, and the forward gear driven gears are meshed with the forward gear driving gear;

[0011] The reverse gear driven gear is one in number, and the reverse gear driven gear is connected to the reverse gear driving gear through an idler gear;

[0012] A sliding engagement sleeve is installed between the fourth-speed drive gear and the third-speed drive gear, as well as between the second-speed drive gear and the first-speed drive gear.

[0013] Furthermore, the output shaft is fixedly mounted with a fourth-speed driven gear, a third-speed driven gear, a second-speed driven gear, and a first-speed driven gear arranged in sequence.

[0014] Furthermore, the auxiliary transmission drive shaft is equipped with an A-gear drive gear, a B-gear drive gear, a C-gear drive gear, and a D-gear drive gear, and a sliding engagement sleeve is installed between the C-gear drive gear and the D-gear drive gear.

[0015] Furthermore, the bevel gear shaft is equipped with an A-gear driven gear, a B-gear driven gear, a C-gear driven gear, and a D-gear driven gear, and a sliding engagement sleeve is installed between the A-gear driven gear and the B-gear driven gear.

[0016] Furthermore, a four-wheel drive gear is fixedly installed near the end of the bevel gear shaft, and the four-wheel drive gear is connected to the transfer case via an idler gear.

[0017] Furthermore, a power output transmission shaft is installed parallel to the side of the power output intermediate shaft; a high-low gear double drive gear is fixedly installed on the power output intermediate shaft, and a high-gear driven gear and a low-gear driven gear are rotatably installed on the power output transmission shaft. The high-gear driven gear and the low-gear driven gear mesh with the high-low gear double drive gear, and a sliding engagement sleeve is installed between the high-gear driven gear and the low-gear driven gear.

[0018] Furthermore, an ultra-low gear clutch is installed on the inner end of the output shaft and the auxiliary transmission drive shaft facing each other.

[0019] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0020] This utility model places the power reversing part at the front end of the chassis, which can increase the output torque and thus ensure power output. The power reversing is achieved by a clutch controlled by hydraulic oil. When the forward clutch is working, it is in the forward state, and when the reverse clutch is working, it is in the reverse state.

[0021] This invention uses hydraulic oil to control the rear-mounted clutch to achieve the output and disconnection of rear-mounted power;

[0022] This invention employs power reversing and a multi-gear combination, transforming traditional mechanical gear shifting into power shifting. It achieves both power shifting and power reversing functions, with a clear transmission path and compact structure. Under high-horsepower operation, power reversing reduces load torque and provides smooth reversing, facilitating control. The multi-gear combination better adapts to the working environment, improving production efficiency.

[0023] The transmission system provided by this utility model can overcome the shortcomings of manual gear shifting, making operation more flexible and convenient, greatly reducing the burden on workers and improving work efficiency.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0026] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0027] Figure 3 This is a schematic diagram of the transmission principle of this utility model.

[0028] In the diagram, 1-input shaft, 2-output shaft, 3-secondary transmission drive shaft, 4-clutch power shaft, 5-intermediate shaft, 6-bevel gear shaft, 7-low-speed forward clutch, 8-forward drive gear, 9-reverse clutch, 10-reverse drive gear, 11-forward driven gear, 12-reverse 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 drive gear, 18-second gear drive gear, 19-third gear drive gear, 20-fourth gear drive gear, 2 1-A gear drive gear, 22-B gear drive gear, 23-C gear drive gear, 24-D gear drive 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 and low gear drive double gear, 33-Power output drive 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 Implementation

[0029] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0030] Example 1

[0031] like Figure 1 and Figure 3 As shown in the figure, this utility model provides a high-horsepower tractor chassis transmission system, including 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 with the end of the clutch power shaft 4 for transmission, and the clutch power shaft 4 and the power output intermediate shaft 36 are connected by a rear clutch 31.

[0032] The clutch power shaft 4 is fitted with an output shaft 2 and a secondary transmission drive shaft 3. The output shaft 2 is located close to the input shaft 1. The input shaft 1 and the clutch power shaft 4 are provided with an intermediate shaft 5 and a bevel gear shaft 6 parallel to them. The end of the bevel gear shaft 6 away from the intermediate shaft 5 is connected to the drive axle 30 through a bevel gear to input power into the drive axle 30.

[0033] The input shaft 1 is sequentially fitted with a low-speed forward clutch 7, a high-speed forward clutch 37, and a reverse clutch 9. The low-speed forward clutch 7 and the high-speed forward clutch 37 are respectively connected to forward drive gears 8 on their opposite outer sides. The forward drive gears 8 include a low-speed forward drive gear and a high-low speed forward drive gear. The forward gear is a Hi-Lo gear. The Hi-Lo gear setting allows the vehicle to directly switch gears according to different road conditions and driving needs during operation.

[0034] The reverse clutch 9 has a working chamber inside, and the reverse clutch 9 is connected to the reverse drive gear 10 at the end away from the high-speed forward clutch 37.

[0035] This invention positions the power reversing mechanism at the front of the chassis, increasing output torque and thus ensuring power output. Power reversing is achieved by a hydraulically controlled clutch; when the forward clutch is engaged, the vehicle is in a forward state, and when the reverse clutch is engaged, it is in a reverse state.

[0036] The intermediate shaft 5 is sequentially equipped with a forward driven gear 11, a reverse 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.

[0037] There are two driven gears 11 for forward gears, and the driven gears 11 for forward gears are meshed with the driving gear 8 for forward gears.

[0038] The reverse gear driven gear 12 is one in number, and the reverse gear driven gear 12 is connected to the reverse gear driving gear 10 through an idler gear.

[0039] A sliding engagement sleeve is installed between the fourth-speed drive gear 20 and the third-speed drive gear 19, and between the second-speed drive gear 18 and the first-speed drive gear 17.

[0040] The output shaft 2 is fixedly mounted with a fourth-speed driven gear 16, a third-speed driven gear 15, a second-speed driven gear 14, and a first-speed driven gear 13 arranged in sequence. The fourth-speed driven gear 16 meshes with the fourth-speed driving gear 20, the third-speed driven gear 15 meshes with the third-speed driving gear 19, the second-speed driven gear 14 meshes with the second-speed driving gear 18, and the first-speed driven gear 13 meshes with the first-speed driving gear 17.

[0041] The auxiliary transmission drive shaft 3 is equipped with 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. A sliding engagement sleeve is installed between the C-gear drive gear 23 and the D-gear drive gear 24.

[0042] The bevel gear shaft 6 is equipped 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, and the D-gear driven gear 28 meshes with the D-gear driving gear 24. A sliding engagement sleeve is installed between the A-gear driven gear 25 and the B-gear driven gear 26.

[0043] A four-wheel drive gear 29 is fixedly installed near the end of the bevel gear shaft 6. The four-wheel drive gear 29 is connected to the transfer case via an idler gear.

[0044] A power output transmission shaft 33, which is parallel to the power output intermediate shaft 36, is installed on the side of the power output intermediate shaft 36.

[0045] A high-low gear double drive gear 32 is fixedly mounted on the power output intermediate shaft 36. A high-gear driven gear 34 and a low-gear driven gear 35 are rotatably mounted on the power output transmission shaft 33. The high-gear driven gear 34 and the low-gear driven gear 35 mesh with the high-low gear double drive gear 32. A sliding engagement sleeve is installed between the high-gear driven gear 34 and the low-gear driven gear 35.

[0046] When the hydraulic oil controls the rear clutch 31, the engine power can be transmitted to the power output transmission shaft 33 through the input shaft 1, clutch power shaft 4, and power output intermediate shaft 36 to achieve rear power output. When the rear clutch 31 is not working, there will be no output.

[0047] Example 2

[0048] like Figure 2 As shown, this utility model provides a high-horsepower tractor chassis transmission system. The difference between Embodiment 2 and Embodiment 1 is that:

[0049] In Example 2, an ultra-low gear clutch 38 is installed on the inner ends of the output shaft 2 and the auxiliary transmission drive shaft 3 facing each other. In Example 1, an ultra-low gear clutch 38 is not installed on the inner ends of the output shaft 2 and the auxiliary transmission drive shaft 3 facing each other.

[0050] When an ultra-low gear clutch 38 is installed, the ultra-low gear clutch 38 operates under hydraulic oil control, with high gear and low gear. In high gear, one speed ratio is output to the rear axle, and in low gear, another speed ratio is output to the rear axle.

[0051] The specific working principle of this utility model is as follows:

[0052] Forward and Reverse: Positioning the power reversing mechanism at the front of the chassis increases output torque, thus ensuring power delivery. Power reversing is achieved by a hydraulically controlled clutch; when the forward clutch is engaged, the vehicle is in a forward state, and when the reverse clutch is engaged, it is in a reverse state.

[0053] Rear-mounted power: When the hydraulic oil controls the rear-mounted clutch, the engine's power can be transmitted to the power output drive shaft through the input shaft, clutch power shaft, and power output intermediate shaft to achieve rear-mounted power output. When the rear-mounted clutch is not working, there will be no output.

[0054] This invention employs power reversing and a multi-gear combination, transforming traditional mechanical gear shifting into power shifting. It achieves both power shifting and power reversing functions, with a clear transmission path and compact structure. Under high-horsepower operation, power reversing reduces load torque and provides smooth reversing, facilitating control. The multi-gear combination better adapts to the working environment, improving production efficiency.

[0055] The transmission system provided by this utility model can overcome the shortcomings of manual gear shifting, making operation more flexible and convenient, greatly reducing the burden on workers and improving work efficiency.

[0056] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A high-horsepower tractor chassis transmission system, characterized in that: The system 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 with the end of the clutch power shaft (4) for transmission. The clutch power shaft (4) and the power output intermediate shaft (36) are connected by a rear clutch (31). An output shaft (2) and a secondary transmission drive shaft (3) are sleeved on the clutch power shaft (4). An intermediate shaft (5) and a bevel gear shaft (6) parallel to the input shaft (1) and the clutch power shaft (4) are provided on the side. The end of the bevel gear shaft (6) away 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 sleeved in sequence on the input shaft (1).

2. The high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: The low-speed forward clutch (7) and the high-speed forward clutch (37) are respectively connected to forward drive gears (8) on opposite sides. The forward drive gears (8) include low-speed forward drive gears and high-speed forward drive gears. The reverse clutch (9) has a working chamber inside. The reverse clutch (9) is connected to a reverse drive gear (10) at the end away from the high-speed forward clutch (37).

3. The high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: The intermediate shaft (5) is sequentially equipped with a forward driven gear (11), a reverse driven gear (12), a fourth-speed driving gear (20), a third-speed driving gear (19), a second-speed driving gear (18), and a first-speed driving gear (17).

4. The high-horsepower tractor chassis transmission system as described in claim 3, characterized in that: The number of forward gear driven gears (11) is two, and the forward gear driven gears (11) are meshed with the forward gear driving gears (8); The reverse driven gear (12) is one in number, and the reverse driven gear (12) is connected to the reverse driving gear (10) through an idler gear; A sliding engagement sleeve is installed between the fourth-speed drive gear (20) and the third-speed drive gear (19), and between the second-speed drive gear (18) and the first-speed drive gear (17).

5. The high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: The output shaft (2) is fixedly mounted with a fourth-speed driven gear (16), a third-speed driven gear (15), a second-speed driven gear (14), and a first-speed driven gear (13) arranged in sequence.

6. The high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: The auxiliary transmission drive shaft (3) is equipped with 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). A sliding engagement sleeve is installed between the C-gear drive gear (23) and the D-gear drive gear (24).

7. The high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: The bevel gear shaft (6) is equipped 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). A sliding engagement sleeve is installed between the A-gear driven gear (25) and the B-gear driven gear (26).

8. The high-horsepower tractor chassis transmission system as described in claim 7, characterized in that: A four-wheel drive gear (29) is fixedly installed near its end on the bevel gear shaft (6), and the four-wheel drive gear (29) is connected to the transfer case via an idler gear.

9. A high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: The power output intermediate shaft (36) is equipped with a power output transmission shaft (33) arranged parallel to it on its side; a high and low gear double gear (32) is fixedly installed 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 installed on the power output transmission shaft (33). The power output high gear passive gear (34) and the power output low gear passive gear (35) mesh with the high and low gear 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).

10. A high-horsepower tractor chassis transmission system as described in claim 1, characterized in that: An ultra-low gear clutch (38) is installed on the inner end of the output shaft (2) and the auxiliary transmission drive shaft (3).

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