WO2023216373A1

WO2023216373A1 - Tractor intelligent control clutch assembly

Info

Publication number: WO2023216373A1
Application number: PCT/CN2022/100441
Authority: WO
Inventors: 陈正华
Original assignee: 陈正华
Priority date: 2022-05-07
Filing date: 2022-06-22
Publication date: 2023-11-16
Also published as: CN114962636A; CN114962636B

Abstract

The present invention belongs to the technical field of tractors, and particularly relates to a tractor intelligent control clutch assembly, which comprises an input shaft, wherein the input shaft is in transmission with a PTO output shaft by means of a PTO clutch; the input shaft is sleeved with a high-speed driving wheel and a low-speed reverse gear driving wheel; a high-speed shaft is sleeved with a high-speed driven wheel and a high-speed output wheel, and the high-speed driven wheel is in transmission with the high-speed output wheel by means of a high-speed clutch; a low-speed shaft is sleeved with a low-speed driven wheel, a low-speed output wheel and a reverse gear idle wheel, and the low-speed driven wheel is in transmission with the low-speed output wheel by means of a low-speed clutch; the reverse gear shaft is sleeved with a reverse gear driven wheel and a reverse gear output wheel, and the reverse gear driven wheel is in transmission with the reverse gear output wheel by means of a reverse gear clutch; and the output shaft is fixedly sleeved with a clutch output wheel. According to the present invention, the input shaft, the low-speed shaft, the high-speed shaft and the reverse gear shaft are distributed in a quadrangle shape; and a TCU controller is used for programming and controlling an electro-hydraulic proportional valve to drive a corresponding wet clutch to be engaged and separated at the optimal time, transmission is stable, the service life is long, and the impact on gear shifting and reversing is small.

Description

A tractor intelligent control clutch assembly

Technical areas:

The invention belongs to the technical field of tractors, and specifically refers to a tractor intelligent control clutch assembly.

Background technique:

At present, the transmission system of tractors in my country generally uses dry clutches to engage or separate the transmission. Improper manual operation can easily cause long-term sliding friction between the friction plate and the pressure plate, resulting in the generation of a large amount of friction heat and the failure of the friction plate. The service life is short and requires frequent maintenance. Moreover, when the dry clutch is shifting gears, the engagement time is affected by human operating habits, resulting in the clutch service life being sometimes very short.

Although some of the transmission systems developed by foreign developed countries use wet clutches, which control the clutch with the help of hydraulic valves and have high transmission efficiency, they lack intelligent technology to control the corresponding clutch to adjust the engagement time of the gear shift, resulting in the transmission system The ideal shifting method is never achieved.

At the same time, in order to meet the normal operating needs of tractors, the current market lacks the function of having high-speed forward gear, low-speed forward gear, reverse gear and PTO output gear in the clutch assembly. All wet clutches and their related The coupled gears, shafts and bearings are installed in the same box, which can greatly improve the cleanliness of the hydraulic oil in the clutch assembly, avoid stuck valve failures in the control valve, and improve the service life of the clutch, gears, shafts and bearings (reliable performance), and also improves the craftsmanship of assembly and the convenience of service.

Contents of the invention:

The purpose of the invention is to provide an intelligent control clutch assembly for a tractor. Its four axes are distributed in a quadrangular shape, which reasonably saves space and can shorten the length of the chassis assembly. The tractor can have a smaller turning radius and better flexibility. At the same time, the TCU controller is used to program and control the electro-hydraulic proportional valve, and control the corresponding wet clutch according to the working needs of shifting, reversing and PTO, so as to engage and separate at the best time, with stable and reliable transmission and low wear. , overload protection, long service life and small shifting impact.

The present invention is implemented as follows:

A tractor intelligent control clutch assembly, including a box body, a TCU controller, and an input shaft, a high-speed shaft, a low-speed shaft, a reverse gear shaft, an output shaft and a PTO output shaft that are rotatably connected to the box body. The input shaft It is set on the same axis as the PTO output shaft, and the input shaft and the PTO output shaft are connected through the PTO clutch transmission. The input shaft, low speed shaft, high speed shaft and reverse gear shaft are parallel to each other and distributed in a quadrilateral. The input shaft is fixed with a high speed active The high-speed driven wheel is connected to the low-speed reverse gear driving wheel. The high-speed driven wheel is fixedly mounted on the high-speed shaft and meshed with the high-speed driving wheel. The high-speed output wheel is rotated on the high-speed shaft. The high-speed driven wheel is connected to the high-speed output wheel through the high-speed clutch. The low-speed shaft The upper fixed sleeve has a low-speed driven wheel that meshes with the low-speed reverse driving wheel. The rotating set on the low-speed shaft has a low-speed output wheel and a reverse idler wheel that can rotate synchronously, and the low-speed driven wheel is connected to the low-speed output wheel through a low-speed clutch. The reverse gear driven wheel is fixedly mounted on the gear shaft and meshes with the low-speed reverse gear driving wheel. The reverse gear output wheel is rotated on the reverse gear shaft and meshes with the reverse gear idler gear. The reverse gear driven gear is connected to the reverse gear through the reverse gear clutch. The output wheel is connected to the transmission. The output shaft is fixed with a clutch output wheel that meshes with the high-speed output wheel and the low-speed output wheel respectively. The PTO clutch, high-speed clutch, low-speed clutch and reverse clutch are all wet clutches, and are programmed and programmed by the TCU controller. The electro-hydraulic proportional valve is controlled to control the engagement or disengagement of the PTO clutch, high-speed clutch, low-speed clutch and reverse clutch respectively.

In the above-mentioned tractor intelligent control clutch assembly, the output shaft is a hollow shaft, and the PTO output shaft is coaxially connected to the center hole of the output shaft.

In the above-mentioned tractor intelligent control clutch assembly, the axis center of the output shaft and the axis center of the low-speed shaft are located on the same vertical plane, and the axis center of the high-speed shaft and the axis center of the reverse gear shaft are located on the same horizontal plane. .

In the above-mentioned tractor intelligent control clutch assembly, the input shaft and the PTO output shaft are drivingly connected by the low-speed reverse gear driving wheel through the PTO clutch and the PTO output shaft.

In the above-mentioned tractor intelligent control clutch assembly, the low-speed output wheel and the reverse idler wheel are an integrated structure.

The outstanding advantages of the present invention compared with the prior art are:

1. The present invention arranges the input shaft, low-speed shaft, high-speed shaft and reverse gear shaft in a spatial quadrilateral distribution, reasonably optimizing the space in the clutch assembly, making the overall structure compact, smaller in size and space-saving; at the same time, with the help of TCU control Program the computer and control the electro-hydraulic proportional valve to control the corresponding wet clutch to engage and disengage at the best time according to actual load conditions. It has stable and reliable transmission, low wear, overload protection, long service life and small shifting impact. Advantage;

2. Both the high-speed clutch and the low-speed clutch of the present invention adopt wet clutches, which have reliable gear shifting, long service life and basically do not require maintenance and replacement in practical applications. At the same time, the wear is small and the transmission system can be protected from overload; while the wet clutch is used In reverse gear, the electro-hydraulic proportional valve can be used to control the reverse clutch to shift gears softly, making the overall shift smooth and with less impact; in addition, a wet clutch is applied to the PTO output gear, and the electro-hydraulic proportional valve To control the engagement of the PTO clutch, it can perform soft start, and thus can perform soft start under loads with large starting torque.

Picture description:

Figure 1 is a schematic diagram of the spatial distribution of the input shaft, low speed shaft, high speed shaft and reverse gear shaft of the present invention;

Figure 2 is a schematic diagram of the transmission mechanism of the input shaft, low-speed shaft and high-speed shaft of the present invention;

Figure 3 is a schematic diagram of the transmission mechanism of the input shaft, low speed shaft and reverse gear shaft of the present invention.

In the picture: 1. Box; 2. TCU controller; 3. Input shaft; 4. High speed shaft; 5. Low speed shaft; 6. Reverse gear shaft; 7. Output shaft; 8. PTO output shaft; 9. PTO clutch ; 10. High-speed driving wheel; 11. Low-speed reverse driving wheel; 12. High-speed driven wheel; 13. High-speed output wheel; 14. High-speed clutch; 15. Low-speed driven wheel; 16. Low-speed output wheel; 17. Reverse idler wheel ; 18. Low-speed clutch; 19. Reverse driven wheel; 20. Reverse output wheel; 21. Reverse clutch; 22. Clutch output wheel; 23. Electro-hydraulic proportional valve.

Detailed ways:

The present invention will be further described below with specific embodiments, see Figures 1-3:

A tractor intelligent control clutch assembly, including a box body 1, a TCU controller 2, and an input shaft 3, a high-speed shaft 4, a low-speed shaft 5, a reverse gear shaft 6, an output shaft 7 and PTO output shaft 8, the input shaft 3 and the PTO output shaft 8 are arranged on the same axis, and the input shaft 3 and the PTO output shaft 8 are connected through the PTO clutch 9. The input shaft 3, the low speed shaft 5, the high speed shaft 4 and the reverse The gear shafts 6 are parallel to each other and distributed in a quadrilateral shape. The input shaft 3 is fixed with a high-speed driving wheel 10 and a low-speed reverse driving wheel 11. The high-speed shaft 4 is fixed with a high-speed driven wheel 12 meshing with the high-speed driving wheel 10. The high-speed shaft There is a high-speed output wheel 13 in the upper rotating set of 4, and the high-speed driven wheel 12 is transmission connected with the high-speed output wheel 13 through the high-speed clutch 14. The low-speed shaft 5 is fixed with a low-speed driven wheel 15 that meshes with the low-speed reverse driving wheel 11. The low-speed shaft 5 The upper rotating set has a low-speed output wheel 16 and a reverse idler gear 17 that can rotate synchronously, and the low-speed driven wheel 15 is transmission connected with the low-speed output wheel 16 through the low-speed clutch 18. The reverse gear shaft 6 is solidly mounted with a low-speed reverse active gear. The reverse gear driven wheel 19 is meshed with the reverse gear wheel 11. The reverse gear shaft 6 is rotated with a reverse gear output wheel 20 meshed with the reverse gear idler gear 17, and the reverse gear driven wheel 19 is driven by the reverse gear output wheel 20 through the reverse gear clutch 21. connection, the output shaft 7 is fixed with a clutch output wheel 22 that meshes with the high-speed output wheel 13 and the low-speed output wheel 16 respectively. The PTO clutch 9, the high-speed clutch 14, the low-speed clutch 18 and the reverse clutch 21 are all wet clutches, and are composed of The TCU controller 2 programs and controls the electro-hydraulic proportional valve 23 to respectively control the engagement or disengagement of the PTO clutch 9, the high-speed clutch 14, the low-speed clutch 18 and the reverse clutch 21.

In the present invention, the input shaft 3, the low-speed shaft 5, the high-speed shaft 4 and the reverse gear shaft 6 are arranged in a spatial quadrilateral distribution to reasonably optimize the space in the clutch assembly, making the overall structure compact, small in size and space-saving; at the same time, with the help of The TCU controller 2 performs programming and controls the electro-hydraulic proportional valve 23 to control the corresponding wet clutch to engage and disengage at the best time according to actual needs. It has stable and reliable transmission, low wear, overload protection, long service life and shifting shock. Small and other advantages.

Among them, in order to make the output shaft 7 of the clutch assembly and the PTO output shaft 8 be on the same axis, and to further optimize the spatial structure, the output shaft 7 is a hollow shaft, and the PTO output shaft 8 is coaxially connected to the output shaft. 7 on the center hole. Therefore, the input shaft 3, the output shaft 7 and the PTO output shaft 8 are all located on the same axis, and form a spatial quadrilateral distribution structure with the low-speed shaft 5, the high-speed shaft 4 and the reverse gear shaft 6 respectively. The overall structure is compact and the volume is small.

Furthermore, the specific position of the spatial quadrilateral formed by the input shaft 3, the low-speed shaft 5, the high-speed shaft 4 and the reverse gear shaft 6 in the clutch assembly box 1 is: the axis center of the output shaft 7 and the center of the low-speed shaft 5 The axis center is located on the same vertical plane, and the axis center of the high-speed shaft 4 and the axis center of the reverse gear shaft 6 are located on the same horizontal plane.

At the same time, in this embodiment, the specific transmission structure between the input shaft 3 and the PTO output shaft 8 is: between the input shaft 3 and the PTO output shaft 8, the low-speed reverse gear driving wheel 11 passes through the PTO clutch 9 and the PTO output Shaft 8 transmission connection.

In addition, during the reverse transmission process, in order to enable the reverse idler gear 17 and the low-speed output wheel 16 to rotate synchronously, the low-speed output wheel 16 and the reverse idler gear 17 are of an integrated structure.

The power transmission routes of the present invention include:

The transmission route of the high-speed forward gear is: input shaft 3 → high-speed driving wheel 10 → high-speed driven wheel 12 → high-speed clutch 14 → high-speed output wheel 13 → clutch output wheel 22 → output shaft 7;

The transmission route of the low-speed forward gear is: input shaft 3 → low-speed reverse driving wheel 11 → low-speed driven wheel 15 → low-speed clutch 18 → low-speed output wheel 16 → clutch output wheel 22 → output shaft 7; among them, the high-speed clutch 14 and the low-speed clutch 18 all use wet clutches, which have reliable and smooth shifting, long service life and basically no need for maintenance and replacement in practical applications. At the same time, they have less wear and can protect the transmission system from overload, and can be controlled by the electro-hydraulic proportional valve 23 according to actual needs. The high-speed clutch 14 or the low-speed clutch 18 is controlled to perform gear shifting with optimal engagement time.

The transmission route of the reverse gear is: input shaft 3 → low-speed reverse driving wheel 11 → reverse driven wheel 19 → reverse clutch 21 → reverse output wheel 20 → reverse idler wheel 17 → low-speed output wheel 16 → clutch output wheel 22 →Output shaft 7; that is, the wet clutch is used in the reverse gear, and the electro-hydraulic proportional valve 23 can be used to control the reverse gear clutch 21 to shift gears softly, making the overall shift smooth and with less impact.

The transmission route of the PTO output gear is: input shaft 3 → low-speed reverse gear driving wheel 11 → PTO clutch 9 → PTO output shaft 8; a wet clutch is applied to the PTO output gear, and the electro-hydraulic proportional valve 23 controls the PTO clutch 9 The engagement of the PTO output gear enables soft start.

The above embodiment is only one of the preferred embodiments of the present invention, and does not limit the scope of the present invention. Therefore, all equivalent changes based on the shape, structure, and principle of the present invention should be covered by the present invention. within the scope of protection.

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Claims

A tractor intelligent control clutch assembly, which is characterized by: including a box body (1), a TCU controller (2), an input shaft (3) and a high-speed shaft (4) rotatably connected to the box body (1) , low speed shaft (5), reverse gear shaft (6), output shaft (7) and PTO output shaft (8), the input shaft (3) and the PTO output shaft (8) are arranged on the same axis, and the input shaft (3) ) and the PTO output shaft (8) are connected through the PTO clutch (9). The input shaft (3), low speed shaft (5), high speed shaft (4) and reverse gear shaft (6) are parallel to each other and distributed in a quadrilateral shape. A high-speed driving wheel (10) and a low-speed reverse driving wheel (11) are fixedly mounted on the input shaft (3), and a high-speed passive wheel (12) meshed with the high-speed driving wheel (10) is fixedly mounted on the high-speed shaft (4). A high-speed output wheel (13) is mounted on the high-speed shaft (4), and the high-speed driven wheel (12) is transmission connected to the high-speed output wheel (13) through the high-speed clutch (14). The low-speed shaft (5) is fixedly mounted on the low-speed shaft (5). The low-speed driven wheel (15) meshes with the reverse gear driving wheel (11). The low-speed output wheel (16) and the reverse gear idler wheel (17) that can rotate synchronously are mounted on the low-speed shaft (5), and the low-speed driven wheel (15) ) is transmission connected to the low-speed output wheel (16) through the low-speed clutch (18). The reverse gear shaft (6) is fixed with a reverse gear driven wheel (19) that meshes with the low-speed reverse gear driving wheel (11). The reverse gear shaft (19) 6) The upper rotating set has a reverse output wheel (20) meshed with the reverse idler wheel (17), and the reverse driven wheel (19) is transmission connected to the reverse output wheel (20) through the reverse clutch (21). The output shaft (7) is fixedly sleeved with a clutch output wheel (22), a PTO clutch (9), a high-speed clutch (14), and a low-speed clutch (18) that mesh with the high-speed output wheel (13) and the low-speed output wheel (16) respectively. and the reverse clutch (21) are all wet clutches, and are programmed and controlled by the TCU controller (2) and the electro-hydraulic proportional valve (23) controls the PTO clutch (9), high-speed clutch (14), low-speed clutch (18) and Engagement or disengagement of reverse clutch (21).
A tractor intelligent control clutch assembly according to claim 1, characterized in that: the output shaft (7) is a hollow shaft, and the PTO output shaft (8) is coaxially connected to the output shaft (7) on the center hole.
A tractor intelligent control clutch assembly according to claim 1 or 2, characterized in that: the axis center of the output shaft (7) and the axis center of the low-speed shaft (5) are located on the same vertical plane, and the axis center of the high-speed shaft (5) is on the same vertical plane. The axis center of the shaft (4) and the axis center of the reverse gear shaft (6) are located on the same horizontal plane.
A tractor intelligent control clutch assembly according to claim 1, characterized in that: the input shaft (3) and the PTO output shaft (8) are connected by a low-speed reverse gear driving wheel (11) through the PTO clutch (9) ) is drivingly connected to the PTO output shaft (8).
A tractor intelligent control clutch assembly according to claim 1, characterized in that: the low-speed output wheel (16) and the reverse gear idler wheel (17) are of an integrated structure.