阅读说明：本技术 一种大棚拖拉机专用前驱动桥 (Special front drive axle for greenhouse tractor ) 是由 陆凤祥 常飞龙 于 2020-05-14 设计创作，主要内容包括：本发明公开了一种大棚拖拉机专用前驱动桥,含有壳体、中央传动机构、左半轴、右半轴、左末端传动轴和右末端传动轴,还包括左万向节、右万向节、左行星轮机构、右行星轮机构、左末端传动壳和右末端传动壳,壳体左侧端设有左上轴和左下轴、右侧端设有右上轴和右下轴,左末端传动壳与左上轴和左下轴、右末端传动壳与右上轴和右下轴分别构成转动连接,左末端传动轴和右末端传动轴分别位于左末端传动壳和右末端传动壳中,左半轴通过左万向节、右半轴通过右万向节分别与左末端传动轴和右末端传动轴相连,左末端传动轴和右末端传动轴分别与左行星轮机构和右行星轮机构相连,左行星轮机构和右行星轮机构分别与左末端传动壳和右末端传动壳相连。(The invention discloses a special front drive axle for a greenhouse tractor, which comprises a shell, a central transmission mechanism, a left half shaft, a right half shaft, a left tail end transmission shaft and a right tail end transmission shaft, and also comprises a left universal joint, a right universal joint, a left planet wheel mechanism, a right planet wheel mechanism, a left tail end transmission shell and a right tail end transmission shell, wherein the left side end of the shell is provided with a left upper shaft and a left lower shaft, the right side end of the shell is provided with a right upper shaft and a right lower shaft, the left tail end transmission shell and the left upper shaft and the left lower shaft, the right tail end transmission shell and the right upper shaft and the right lower shaft respectively form rotary connection, the left tail end transmission shaft and the right tail end transmission shaft are respectively positioned in the left tail end transmission shell and the right tail end transmission shell, the left half shaft is respectively connected with the left tail end transmission shaft and the right tail end transmission shaft through the left universal joint and the right half shaft through the, the left planetary wheel mechanism and the right planetary wheel mechanism are respectively connected with the left end transmission shell and the right end transmission shell.)

1. A front drive axle special for a greenhouse tractor comprises a shell, a steering mechanism, a central transmission mechanism, a differential mechanism, a left half shaft, a right half shaft, a left end transmission shaft and a right end transmission shaft, wherein the steering mechanism is arranged on the outer side of the shell, the central transmission mechanism is arranged in the middle of the shell, the differential mechanism is arranged on the central transmission mechanism, the left half shaft and the right half shaft are respectively arranged on the left side and the right side of the shell, the right end of the left half shaft and the left end of the right half shaft are respectively connected with the left side and the right side of the central transmission mechanism, the front drive axle is characterized by further comprising a left universal joint, a right universal joint, a left planet wheel mechanism, a right planet wheel mechanism, a left end transmission shell and a right end transmission shell, a left upper shaft is arranged at the upper end of the left end of the shell, a left lower shaft is arranged at the lower end of the left end of the shell, the axes of, the upper end of the right side end of the shell is provided with a right upper shaft, the lower end of the right side end of the shell is provided with a right lower shaft, the axes of the right upper shaft and the right lower shaft are overlapped, and the right upper shaft and the right lower shaft can rotate relative to the right side end of the shell; the left end transmission shell comprises a left shell I and a left shell II, the right end of the left shell I is arranged on the left upper shaft and the left lower shaft, the left end part of the left shell I is arranged in the left shell II in a penetrating manner, the left shell I and the left shell II form a rotary connection, a left end transmission shaft is arranged in the left shell I in a penetrating manner and forms a rotary connection with the left shell I, the right end of a left universal joint is connected with the left end of a left half shaft, the left end of the left universal joint is connected with the right end of the left end transmission shaft, the left planetary gear mechanism comprises a left sun gear, a left planetary gear frame and a left gear ring, the left sun gear is arranged at the left end of the left end transmission shaft, the left planetary gear is arranged on the left planetary gear frame, the left sun gear is meshed with the left planetary gear, the left planetary gear is meshed with the left gear ring, the left gear ring is arranged at the left end of the left shell I; the right end transmission shell comprises a first right shell and a second right shell, the left end of the first right shell is arranged on a right upper shaft and a right lower shaft, the right end part of the first right shell is arranged inside the second right shell in a penetrating mode, the first right shell and the second right shell form a rotating connection, a right end transmission shaft is arranged in the first right shell in a penetrating mode and forms a rotating connection with the first right shell, the left end of a right universal joint is connected with the right end of a right half shaft, the right end of the right universal joint is connected with the left end of the right end transmission shaft, the right planetary gear mechanism comprises a right sun gear, a right planetary gear frame and a right gear ring, the right sun gear is arranged at the right end of the right end transmission shaft, the right planetary gear is arranged on the right planetary gear frame, the right sun gear is meshed with the right planetary gear, the right planetary gear is meshed with the right gear ring, the right gear ring is arranged at the right end of the first right shell.

2. The front drive axle special for the greenhouse tractor as claimed in claim 1, wherein the left end drive shell and the right end drive shell are symmetrical in structure, the left end drive shaft and the right end drive shaft are symmetrical in structure, the left universal joint and the right universal joint are symmetrical in structure, and the left planetary gear mechanism and the right planetary gear mechanism are symmetrical in structure.

3. The front drive axle special for the greenhouse tractor as claimed in claim 2, wherein the inward inclination angle of the axes of the left upper shaft and the left lower shaft is 7 °, and the inward inclination angle of the axes of the right upper shaft and the right lower shaft is 7 °.

4. The front drive axle special for the greenhouse tractor as claimed in claim 2, wherein the left end drive shaft is inclined downward at an angle of 3.5 °, and the right end drive shaft is inclined downward at an angle of 3.5 °.

5. The front axle special for the greenhouse tractor as claimed in claim 1, wherein the rotation angle of the left end transmission shell around the left upper shaft and the left lower shaft is 51 degrees, and the rotation angle of the right end transmission shell around the right upper shaft and the right lower shaft is 51 degrees.

6. The front drive axle special for the greenhouse tractor as claimed in claim 1, wherein the left universal joint and the right universal joint are constant velocity universal joints.

7. The front drive axle special for the greenhouse tractor as claimed in claim 1, wherein the number of the left planetary gears in the left universal joint and the number of the right planetary gears in the right universal joint are three.

Technical Field

The invention relates to a special front drive axle for a greenhouse tractor.

Background

A tractor comprises a front drive axle, wherein the front drive axle comprises a shell, a steering mechanism, a central transmission mechanism, a differential mechanism, a left half shaft, a left vertical shaft, a left tail end transmission shaft, a right half shaft, a right vertical shaft and a right tail end transmission shaft, the steering mechanism is arranged on the outer side of the shell, the central transmission mechanism is arranged in the middle of the inner part of the shell, the differential mechanism is arranged on the central transmission mechanism, the left half shaft and the right half shaft are respectively arranged on the left side and the right side of the shell, the left vertical shaft and the right vertical shaft are respectively arranged in a left vertical shaft seat sleeve and a right vertical shaft seat sleeve, and the left vertical shaft seat sleeve and the right vertical shaft seat sleeve are respectively connected to the left. One end of the left half shaft and one end of the right half shaft are respectively connected with the left side and the right side of the central transmission mechanism, and the other end of the left half shaft and the other end of the right half shaft are respectively meshed with a bevel gear at the upper end of the left vertical shaft and a gear at the upper end of the right vertical shaft through bevel gears. One end of the left end transmission shaft and one end of the right end transmission shaft are respectively meshed with a bevel gear at the lower end of the left vertical shaft and a gear at the lower end of the right vertical shaft through bevel gears, and the other end of the left end transmission shaft and the other end of the right end transmission shaft are respectively provided with a left front wheel and a right front wheel. In the structure of the front drive axle, because the height difference of the left vertical shaft exists between the left half shaft and the left tail end transmission shaft and the height difference of the right vertical shaft exists between the right half shaft and the right tail end transmission shaft, the machine body is higher and is difficult to adapt to the operation in the field of the greenhouse. Meanwhile, the steering angle is small due to the structural limitation of the left vertical shaft seat sleeve and the right vertical shaft seat sleeve, so that the operation in the greenhouse field is limited.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the front drive axle special for the greenhouse tractor, which can reduce the height of the tractor body and has a large steering angle, so that the requirement of field operation of a greenhouse is met.

In order to solve the technical problem, the invention relates to a front drive axle special for a greenhouse tractor, which comprises a shell, a steering mechanism, a central transmission mechanism, a differential mechanism, a left half shaft, a right half shaft, a left tail end transmission shaft and a right tail end transmission shaft, wherein the steering mechanism is arranged on the outer side of the shell, the central transmission mechanism is arranged in the middle of the inner part of the shell, the differential mechanism is arranged on the central transmission mechanism, the left half shaft and the right half shaft are respectively arranged on the left side and the right side of the shell, the right end of the left half shaft and the left end of the right half shaft are respectively connected with the left side and the right side of the central transmission mechanism, the front drive axle further comprises a left universal joint, a right universal joint, a left planetary gear mechanism, a right planetary gear mechanism, a left tail end transmission shell and a right tail end transmission shell, a left upper axle is arranged at the upper end of the left side end of the shell, a left lower axle is, the upper end of the right side end of the shell is provided with a right upper shaft, the lower end of the right side end of the shell is provided with a right lower shaft, the axes of the right upper shaft and the right lower shaft are overlapped, and the right upper shaft and the right lower shaft can rotate relative to the right side end of the shell; the left end transmission shell comprises a left shell I and a left shell II, the right end of the left shell I is arranged on the left upper shaft and the left lower shaft, the left end part of the left shell I is arranged in the left shell II in a penetrating manner, the left shell I and the left shell II form a rotary connection, a left end transmission shaft is arranged in the left shell I in a penetrating manner and forms a rotary connection with the left shell I, the right end of a left universal joint is connected with the left end of a left half shaft, the left end of the left universal joint is connected with the right end of the left end transmission shaft, the left planetary gear mechanism comprises a left sun gear, a left planetary gear frame and a left gear ring, the left sun gear is arranged at the left end of the left end transmission shaft, the left planetary gear is arranged on the left planetary gear frame, the left sun gear is meshed with the left planetary gear, the left planetary gear is meshed with the left gear ring, the left gear ring is arranged at the left end of the left shell I; the right end transmission shell comprises a first right shell and a second right shell, the left end of the first right shell is arranged on a right upper shaft and a right lower shaft, the right end part of the first right shell is arranged inside the second right shell in a penetrating mode, the first right shell and the second right shell form a rotating connection, a right end transmission shaft is arranged in the first right shell in a penetrating mode and forms a rotating connection with the first right shell, the left end of a right universal joint is connected with the right end of a right half shaft, the right end of the right universal joint is connected with the left end of the right end transmission shaft, the right planetary gear mechanism comprises a right sun gear, a right planetary gear frame and a right gear ring, the right sun gear is arranged at the right end of the right end transmission shaft, the right planetary gear is arranged on the right planetary gear frame, the right sun gear is meshed with the right planetary gear, the right planetary gear is meshed with the right gear ring, the right gear ring is arranged at the right end of the first right shell.

The structure symmetry of left end transmission shell and right end transmission shell, the structure symmetry of left end transmission shaft and right end transmission shaft, the structure symmetry of left universal joint and right universal joint, the structure symmetry of left side planet wheel mechanism and right planet wheel mechanism.

The angle of the inward inclination of the axes of the left upper shaft and the left lower shaft is 7 degrees, and the angle of the inward inclination of the axes of the right upper shaft and the right lower shaft is 7 degrees.

The angle of inclination of the left end drive shaft is 3.5 degrees, and the angle of inclination of the right end drive shaft is 3.5 degrees.

The rotation angle of the left end transmission shell around the left upper shaft and the left lower shaft is 51 degrees, and the rotation angle of the right end transmission shell around the right upper shaft and the right lower shaft is 51 degrees.

The left universal joint and the right universal joint are constant velocity universal joints.

The left planet wheel in the left universal joint and the right planet wheel in the right universal joint are three.

In the special front drive axle for the greenhouse tractor, the left vertical shaft and the right vertical shaft in the prior art are removed, the left half shaft is directly connected with the left tail end transmission shaft through the left universal joint, and the right half shaft is directly connected with the right tail end transmission shaft through the right universal joint, so that the height difference between the left half shaft and the left tail end transmission shaft and the height difference between the right half shaft and the right tail end transmission shaft are zero, the height of the machine body can be reduced, and the requirement of field operation of a greenhouse is met. Meanwhile, the left half shaft is directly connected with the left tail end transmission shaft through the left universal joint, and the right half shaft is directly connected with the right tail end transmission shaft through the right universal joint, so that the defect that the steering angle is small due to the limitation of structures of a left vertical shaft seat sleeve and a right vertical shaft seat sleeve in the prior art is overcome, the rotating angle of the left tail end transmission shell around the left upper shaft and the left lower shaft reaches 51 degrees, and the rotating angle of the right tail end transmission shell around the right upper shaft and the right lower shaft reaches 51 degrees, so that the requirement of field operation of the greenhouse is met.

Drawings

FIG. 1 is a schematic structural view of a front drive axle dedicated for a greenhouse tractor;

FIG. 2 is an enlarged schematic view of the bottom cross-sectional configuration of the left end drive housing, left end drive shaft, left half shaft, left universal joint, left upper shaft, left lower shaft, and left end of the housing of FIG. 1;

fig. 3 is an enlarged schematic view of the left side view structure of fig. 1.

Detailed Description

The technical scheme of the invention is further explained in detail by combining the attached drawings:

as shown in fig. 1, fig. 2 and fig. 3, the invention discloses a front drive axle special for a greenhouse tractor, which comprises a shell 5, a steering mechanism 11, a central transmission mechanism 10, a differential, a left half shaft 15, a right half shaft, a left end transmission shaft 18 and a right end transmission shaft. The steering mechanism 11 is arranged on the outer side of the housing 5, the central transmission mechanism 10 is arranged in the middle of the housing 5, and the differential is arranged on the central transmission mechanism 10. The left and right axle shafts 15 and 6 are disposed on the left and right sides 4 and 6 of the housing 5, respectively. The right end of the left half shaft 15 and the left end of the right half shaft are connected to the left and right sides of the central transmission mechanism 10, respectively. The special front drive axle for the greenhouse tractor further comprises a left universal joint 17, a right universal joint, a left planet wheel mechanism, a right planet wheel mechanism, a left tail end transmission shell and a right tail end transmission shell. As shown in fig. 2, the upper end of the left side end of the housing 5 is provided with a left upper shaft 3, the lower end of the left side end of the housing 5 is provided with a left lower shaft 16, the axes of the left upper shaft 3 and the left lower shaft 16 are overlapped, and the left upper shaft 3 and the left lower shaft 16 can rotate relative to the left side end of the housing 5; similarly, the upper end of the right side end of the shell 5 is provided with a right upper shaft 7, the lower end of the right side end of the shell is provided with a right lower shaft, the axes of the right upper shaft 7 and the right lower shaft are overlapped, and the right upper shaft 7 and the right lower shaft can rotate relative to the right side end of the shell 5. As shown in fig. 2, the left end transmission housing includes a left housing i 2 and a left housing ii 1, the right end of the left housing i 2 is disposed on the left upper shaft 3 and the left lower shaft 16, the left end of the left housing i 2 is inserted into the left housing ii 1, and the left housing i 2 and the left housing ii 1 form a rotary connection. In fact, the first left shell 2 can be rotationally connected with the second left shell 1 through a bearing. The left end transmission shaft 18 is arranged in the left shell I2 in a penetrating way and forms a rotary connection with the left shell I2. As shown in FIG. 2, the right end of the left universal joint 17 is connected to the left end of the left axle shaft 15, and the left end of the left universal joint 17 is connected to the right end of the left final drive shaft 18. The left planetary gear mechanism includes a left sun gear 14, a left planetary gear 13, a left carrier 19, and a left ring gear 12. The left sun gear 14 is arranged at the left end of the left tail end transmission shaft 18, the left planet gear 13 is arranged on a left wheel carrier 19, the left sun gear 14 is meshed with the left planet gear 13, the left planet gear 13 is meshed with the left gear ring 12, the left gear ring 12 is arranged at the left end of the left shell I2, and the left planet wheel carrier 19 is arranged at the left end of the shell II 1. Similarly, the right end transmission shell comprises a right shell I8 and a right shell II 9, the left end of the right shell I8 is arranged on the right upper shaft 7 and the right lower shaft, the right end part of the right shell I8 penetrates into the right shell II 9, and the right shell I8 and the right shell II 9 form rotating connection. The right tail end transmission shaft is arranged in the right shell I8 in a penetrating mode and is in rotating connection with the right shell I8. The left end of the right universal joint is connected with the right end of the right half shaft, and the right end of the right universal joint is connected with the left end of the right tail end transmission shaft. The right planetary wheel mechanism comprises a right sun wheel, a right planetary wheel frame and a right gear ring, the right sun wheel is arranged at the right end of the right tail end transmission shaft, the right planetary wheel is arranged on the right planetary wheel frame, the right sun wheel is meshed with the right planetary wheel, the right planetary wheel is meshed with the right gear ring, the right gear ring is arranged at the right end of the right shell I8, and the right planetary wheel frame is arranged at the right end of the right shell II 9.

For simplifying the structure, reduction in production cost, the structural symmetry of left end transmission shell and right end transmission shell, the structural symmetry of left end transmission shaft 18 and right end transmission shaft, the structural symmetry of left universal joint and right universal joint, the structural symmetry of left side planet wheel mechanism and right planet wheel mechanism.

In order to improve the maneuverability and the driving stability, the axes of the left upper shaft 3 and the left lower shaft 16 are inclined inwards by an angle of 7 degrees, and the axes of the right upper shaft 7 and the right lower shaft are inclined inwards by an angle of 7 degrees.

For the purpose of improving the handling and driving stability, the left end drive shaft 18 is inclined downward at an angle of 3.5 °, and the right end drive shaft is inclined downward at an angle of 3.5 °.

To achieve a small turning radius, the left end drive housing has a rotation angle of 51 ° around the left upper shaft 3 and the left lower shaft 16, and the right end drive housing has a rotation angle of 51 ° around the right upper shaft 7 and the right lower shaft.

In order to improve the driving stability and optimize the structure, the left universal joint and the right universal joint are constant velocity universal joints.

In order to simplify and optimize the structure, the number of the left planetary gears 13 in the left universal joint and the number of the right planetary gears in the right universal joint are three.

When the special front drive axle for the greenhouse tractor is used, the left front wheel and the right front wheel are respectively arranged on the left shell II 1 of the left end transmission shell and the right shell II 9 of the right end transmission shell, power is transmitted to the central transmission mechanism 10 from the gearbox, the central transmission mechanism 10 simultaneously drives the left half shaft 15 and the right half shaft to rotate, the left half shaft 15 drives the left end transmission shaft 18 to rotate through the left universal joint 17, the left end transmission shaft 18 drives the left sun wheel 14 of the left planetary gear mechanism to rotate, the left sun wheel 14 drives the left planetary gear 13 to rotate, the left planetary gear 13 drives the left planetary gear frame 19 to rotate, the left planetary gear frame 19 drives the left shell II 1 of the left end transmission shell to rotate, and at the moment, the left front wheel rotates along with the left shell II 1. Meanwhile, the right half shaft drives the right tail end transmission shaft to rotate through the right universal joint, the right tail end transmission shaft drives the right sun wheel of the right planetary wheel mechanism to rotate, the right sun wheel drives the right planetary wheel to rotate, the right planetary wheel drives the right planetary wheel frame to rotate, the right planetary wheel frame drives the right shell II 9 of the right tail end transmission shell to rotate, and at the moment, the right front wheel rotates along with the left shell II 9. When the steering mechanism 11 is used for steering, the left shell I2 of the left end transmission shell rotates around the left upper shaft 3 and the left lower shaft 16, and the right shell I8 of the right end transmission shell rotates around the right upper shaft 7 and the left lower shaft, so that steering is achieved.

The special front drive axle for the greenhouse tractor has the advantages that the left vertical shaft and the right vertical shaft in the prior art are eliminated, the left half shaft 15 is directly connected with the left tail end transmission shaft 18 through the left universal joint, the right half shaft is directly connected with the right tail end transmission shaft through the right universal joint, and therefore the height difference between the left half shaft 15 and the left tail end transmission shaft 18 and the height difference between the right half shaft and the right tail end transmission shaft are zero, the height of the machine body can be reduced, and the requirement of field operation of a greenhouse is met. Meanwhile, the left half shaft 15 is directly connected with the left tail end transmission shaft 18 through a left universal joint, and the right half shaft is directly connected with the right tail end transmission shaft through a right universal joint, so that the defect that the steering angle is small due to the limitation of structures of a left vertical shaft seat sleeve and a right vertical shaft seat sleeve in the prior art is overcome, the rotating angle of the right shell II 9 of the left tail end transmission shell around the left upper shaft 3 and the left lower shaft 16 reaches 51 degrees, and the rotating angle of the right tail end transmission shell around the right upper shaft 7 and the right lower shaft reaches 51 degrees, so that the requirement of field operation of the greenhouse is met.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.