CN111645462A - Special front drive axle for greenhouse tractor - Google Patents

Abstract

The invention discloses a special front drive axle for a greenhouse tractor. , Left planetary gear mechanism, right planetary gear mechanism, left end drive housing and right end drive housing, the left end of the housing is provided with a left upper shaft and a left lower shaft, the right end is provided with a right upper shaft and a right lower shaft, and the left end drive housing It forms a rotational connection with the upper left shaft and the lower left shaft, and the right end drive housing, the upper right shaft and the lower right shaft, respectively. The left end drive shaft and the right end drive shaft are located in the left end drive housing and the right end drive housing, respectively. The universal joint and the right half shaft are respectively connected with the left end drive shaft and the right end drive shaft through the right universal joint, and the left end drive shaft and the right end drive shaft are respectively connected with the left planetary gear mechanism and the right planetary gear mechanism, and the left planetary gear The mechanism and the right planetary gear mechanism are respectively connected with the left end transmission casing and the right end transmission casing.

Description

A special front drive axle for a greenhouse tractor

technical field

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

Background technique

There is a tractor, including a front drive axle, the front drive axle includes a housing, a steering mechanism, a central transmission mechanism, a differential, a left half shaft, a left vertical shaft, a left end drive shaft, a right half shaft, a right vertical shaft and a right end drive The shaft, the steering mechanism is arranged on the outer side of the casing, the central transmission mechanism is arranged in the inner middle of the casing, the differential is arranged on the central transmission mechanism, and the left and right half shafts are respectively arranged on the left and right sides of the casing The left vertical shaft and the right vertical shaft are respectively arranged in the left vertical shaft seat sleeve and the 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 and right ends of the casing. One end of the left half shaft and one end of the right half shaft are respectively connected with the left and right sides of the central transmission mechanism, and the other end of the left half shaft and the other end of the right half shaft pass through the bevel gear and the bevel gear on the upper end of the left vertical shaft and the right side respectively. The gears on the upper end of the vertical shaft mesh with each other. One end of the left end drive shaft and one end of the right end drive shaft are meshed with the bevel gear at the lower end of the left vertical shaft and the gear at the lower end of the right vertical shaft respectively through bevel gears. The other end of the left end drive shaft and the other end of the right end drive shaft are respectively equipped with left front wheels and right front wheel. In the above structure of the front drive axle, the height difference of the left vertical shaft exists between the left half shaft and the left end drive shaft, and the height difference of the right vertical shaft exists between the right half shaft and the right end drive shaft, so the fuselage is biased. High, it is difficult to adapt to the work in the greenhouse field. At the same time, due to the structural limitation of the left vertical shaft seat cover and the right vertical shaft seat cover, the steering angle is small, so the operation in the greenhouse field is also limited.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a special front drive axle for a greenhouse tractor, which can not only reduce the height of the tractor body, but also have a large steering angle, so as to meet the requirements of field operations in the greenhouse.

In order to solve the above technical problems, the present invention is a special front drive axle for a greenhouse tractor, which includes a housing, a steering mechanism, a central transmission mechanism, a differential, a left half shaft, a right half shaft, a left end drive shaft and a right end drive shaft, The steering mechanism is arranged on the outer side of the casing, the central transmission mechanism is arranged in the inner middle of the casing, the differential is arranged on the central transmission mechanism, the left half shaft and the right half shaft are respectively arranged on the left and right sides of the casing, and the left The right end of the half shaft and the left end of the right half shaft are respectively connected with the left and right sides of the central transmission mechanism, and also include left universal joint, right universal joint, left planetary gear mechanism, right planetary gear mechanism, left end transmission shell and The right end transmission housing, the upper left end of the housing is provided with an upper left shaft, and the lower end of the left end of the housing is provided with a lower left shaft, the axes of the upper left shaft and the lower left shaft coincide, and the upper left shaft and the lower left shaft can be relative to the left side of the housing. The upper right end of the housing is provided with an upper right shaft, and the lower end of the right end of the housing is provided with a lower right shaft. The axes of the upper right shaft and the lower right shaft are coincident, and the upper right shaft and the lower right shaft can The side end rotates; the left end transmission casing includes a left casing 1 and a left casing 2, the right end of the left casing 1 is arranged on the left upper shaft and the left lower shaft, the left end of the left casing 1 is worn inside the left casing 2, and the left casing 1 and The second left shell constitutes a rotational connection, the left end drive shaft is installed in the first left shell and forms a rotational connection with the first left shell, the right end of the left universal joint is connected with the left end of the left half shaft, and the left end of the left universal joint is connected with the left end. The right end of the transmission shaft is connected, and the left planetary gear mechanism includes a left sun gear, a left planetary gear, a left planetary gear carrier and a left ring gear. On the left side, the left sun gear meshes with the left planetary gear, the left planetary gear meshes with the left ring gear, the left ring gear is arranged on the left end of the left shell one, and the left planet gear carrier is arranged on the left end of the second shell; the right end transmission shell Including the first right shell and the second right shell, the left end of the first right shell is arranged on the upper right shaft and the lower right shaft, the right end of the right shell 1 is inserted into the inside of the second right shell, and the right shell 1 and the right shell 2 form a rotational connection, The right end drive shaft is installed in the right shell one and forms a rotational connection with the right shell one, the left end of the right universal joint is connected with the right end of the right half shaft, the right end of the right universal joint is connected with the left end of the right end drive shaft, and the right end of the right universal joint is connected with the left end of the right end drive shaft. The planetary gear mechanism includes the right sun gear, the right planetary gear, the right planetary gear carrier and the right ring gear. The planetary gears are meshed with each other, the right planetary gear is meshed with the right ring gear, the right ring gear is arranged on the right end of the first right shell, and the right planet carrier is arranged on the right end of the second right shell.

The structures of the left end drive housing and the right end drive housing are symmetrical, the structures of the left end drive shaft and the right end drive shaft are symmetrical, the structures of the left universal joint and the right universal joint are symmetrical, and the left planetary gear is symmetrical in structure. The structure of the mechanism and the right planetary gear mechanism is symmetrical.

The axes of the upper left shaft and the lower left shaft are inclined inward by an angle of 7°, and the axes of the upper right shaft and the lower right shaft are inclined inward by an angle of 7°.

The downwardly inclined angle of the left end drive shaft is 3.5°, and the downwardly inclined angle of the right end drive shaft is 3.5°.

The rotation angle of the left end drive housing around the upper left axis and the lower left axis is 51°, and the rotation angle of the right end drive housing around the upper right axis and the lower right axis is 51°.

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

There are three left planetary wheels in the left universal joint and three right planetary wheels in the right universal joint.

In the above-mentioned special front drive axle for greenhouse tractors, since the left vertical shaft and right vertical shaft of the prior art are removed, the left universal joint is directly connected between the left half shaft and the left end drive shaft, and the connection between the right half shaft and the right end drive shaft is directly adopted. The right universal joint is directly used for connection, so that the height difference between the left half shaft and the left end drive shaft, and the height difference between the right half shaft and the right end drive shaft are zero, so the height of the fuselage can be It can be reduced to meet the requirements of field operations in greenhouses. At the same time, because the left universal joint is directly connected between the left half shaft and the left end drive shaft, and the right universal joint is directly connected between the right half shaft and the right end drive shaft, which overcomes the problems of the prior art, which is limited by the left vertical shaft seat sleeve and the The structural limitation of the right vertical shaft seat sleeve leads to the insufficient steering angle, so that the rotation angle of the left end drive housing around the upper left shaft and the lower left shaft reaches 51°, and the rotation angle of the right end drive housing around the upper right shaft and the lower right shaft reaches 51°. The angle is 51°, so it meets the requirements of field operations in greenhouses.

Description of drawings

Figure 1 is a schematic structural diagram of a dedicated front drive axle for a greenhouse tractor;

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

FIG. 3 is an enlarged schematic diagram of the left-view structure of FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing, the technical scheme of the present invention is described in further detail:

As shown in Figure 1, Figure 2 and Figure 3, the present invention discloses a special front drive axle for a greenhouse tractor, which includes a housing 5, a steering mechanism 11, a central transmission mechanism 10, a differential, a left half shaft 15, a right half shaft shaft, left end drive shaft 18 and right end drive shaft. The steering mechanism 11 is arranged on the outer side of the casing 5 , the central transmission mechanism 10 is arranged in the inner middle of the casing 5 , and the differential is arranged on the central transmission mechanism 10 . The left half shaft 15 and the right half shaft are respectively arranged on the left side 4 and the right side 6 of the housing 5 . The right end of the left half shaft 15 and the left end of the right half shaft are respectively connected to the left and right sides of the central transmission mechanism 10 . The above-mentioned special front drive axle for the greenhouse tractor also includes a left universal joint 17, a right universal joint, a left planetary gear mechanism, a right planetary gear mechanism, a left end drive housing and a right end drive housing. As shown in FIG. 2 , the upper left end of the housing 5 is provided with an upper left shaft 3, and the lower end of the left end of the housing 5 is provided with a lower left shaft 16. The axes of the upper left shaft 3 and the lower left shaft 16 coincide, and the upper left shaft 3 and the lower left shaft 3 The shaft 16 can rotate relative to the left end of the housing 5; similarly, the upper right end of the housing 5 is provided with an upper right shaft 7, and the lower end of the right end of the housing is provided with a lower right shaft. The axes are coincident, and the upper right shaft 7 and the lower right shaft can rotate relative to the right end of the housing 5 . As shown in FIG. 2 , the left end transmission casing includes a left casing 1 2 and a left casing 2 1 , the right end of the left casing 1 2 is arranged on the upper left shaft 3 and the lower left shaft 16 , and the left end of the left casing 1 2 is mounted on the left casing. Inside the second 1, the left shell 1 2 and the left shell 2 1 constitute a rotational connection. In fact, the first left shell 2 can be rotatably connected with the second left shell 1 through a bearing. The left end drive shaft 18 is fitted in the left casing one 2 and is connected with the left casing one 2 in rotation. As shown in FIG. 2 , the right end of the left universal joint 17 is connected with the left end of the left half shaft 15 , and the left end of the left universal joint 17 is connected with 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 planetary carrier 19 and a left ring gear 12 . The left sun gear 14 is arranged on the left end of the left end drive shaft 18, the left planetary gear 13 is arranged on the left wheel carrier 19, the left sun gear 14 is meshed with the left planetary gear 13, and the left planetary gear 13 is in phase with the left ring gear 12. Meshing, the left ring gear 12 is arranged on the left end of the left casing 1 2 , and the left planet carrier 19 is arranged on the left end of the second casing 1 . Similarly, the right end transmission casing includes a right casing one 8 and a right casing two 9, the left end of the right casing one 8 is arranged on the upper right shaft 7 and the lower right shaft, and the right end of the right casing one 8 is fitted inside the right casing two 9 , the right shell one 8 and the right shell two 9 constitute a rotational connection. The right end drive shaft is installed in the right casing one 8 and is connected with the right casing one 8 in rotation. 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 end drive shaft. The right planetary gear mechanism includes a right sun gear, a right planetary gear, a right planetary gear carrier and a right ring gear, the right sun gear is arranged on the right end of the right end drive shaft, the right planetary gear is arranged on the right traveling wheel carrier, and the right sun gear is connected with the right gear. The right planetary gear is meshed, the right planetary gear is meshed with the right ring gear, the right ring gear is arranged on the right end of the right shell one 8, and the right planetary carrier is arranged on the right end of the right shell two 9.

In order to simplify the structure and reduce the production cost, the structures of the left end drive housing and the right end drive housing are symmetrical, the structures of the left end drive shaft 18 and the right end drive shaft are symmetrical, and the left universal joint and the right universal joint are symmetrical. The structures of the left planetary gear mechanism and the right planetary gear mechanism are symmetrical.

In order to improve handling and driving stability, the axes of the upper left axle 3 and the lower left axle 16 are inclined inwardly at an angle of 7°, and the axes of the upper right axle 7 and the lower right axle are inclined inwardly at an angle of 7°.

In order to improve 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 at a downward angle of 3.5°.

In order to achieve a smaller turning radius, the rotation angle of the left end drive housing around the upper left shaft 3 and the lower left shaft 16 is 51°, and the rotation angle of the right end drive housing around the upper right shaft 7 and the lower right shaft is 51°.

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

In order to simplify and optimize the structure, there are three left planetary wheels 13 in the left universal joint and three right planetary wheels in the right universal joint.

When using the above-mentioned special front drive axle for greenhouse tractors, the left front wheel and the right front wheel are respectively arranged on the left shell 2 1 of the left end transmission shell and the right shell 2 9 of the right end transmission shell, and the power is transmitted from the gearbox to the central transmission mechanism. 10. The central transmission mechanism 10 drives the left half shaft 15 and the right half shaft to rotate at the same time. The left half shaft 15 drives the left end drive shaft 18 to rotate through the left universal joint 17, and the left end drive shaft 18 drives the left sun gear of the left planetary gear mechanism. 14 rotates, the left sun gear 14 drives the left planetary gear 13 to rotate, the left planetary gear 13 drives the left planetary gear carrier 19 to rotate, and the left planetary gear carrier 19 drives the left housing 21 of the left end transmission housing to rotate, at this time, the left front wheel follows the left Shell two 1 turns. At the same time, the right half shaft drives the right end drive shaft to rotate through the right universal joint, the right end drive shaft drives the right sun gear of the right planetary gear mechanism to rotate, the right sun gear drives the right planetary gear to rotate, and the right planetary gear drives the right planetary gear The frame rotates, and the right planetary carrier drives the right casing 29 of the right end transmission casing to rotate, and the right front wheel rotates with the left casing 29 at this time. When turning, under the action of the steering mechanism 11, the left shell 2 of the left end transmission shell rotates around the upper left shaft 3 and the lower left shaft 16, and at the same time, the right shell 8 of the right end transmission shell rotates around the upper right shaft 7 and the lower left shaft. to achieve steering.

The above-mentioned special front drive axle for greenhouse tractors removes the left vertical shaft and the right vertical shaft of the prior art, the left half shaft 15 and the left end drive shaft 18 are directly connected by a left universal joint, and the right half shaft and the right end drive shaft are connected between The right universal joint is directly used for connection, so that the height difference between the left half shaft 15 and the left end drive shaft 18 and the height difference between the right half shaft and the right end drive shaft are all zero, so the height of the fuselage is reduced. It can be reduced to meet the requirements of field operations in greenhouses. At the same time, since the left half shaft 15 and the left end drive shaft 18 are directly connected by a left universal joint, and the right half shaft and the right end drive shaft are directly connected by a right universal joint, it overcomes the limitation of the left vertical shaft seat in the prior art. The structural limitation of the sleeve and the right vertical shaft seat sleeve leads to a shortage of a small steering angle, so that the rotation angle of the right casing 29 of the left end transmission casing around the upper left shaft 3 and the lower left shaft 16 reaches 51°, and the right end transmission casing around the upper right shaft. The rotation angle of the shaft 7 and the lower right shaft reaches 51°, so it meets the requirements of field work in the greenhouse.

The specific embodiments described above further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. A special front drive axle for a greenhouse tractor, comprising a casing, a steering mechanism, a central transmission mechanism, a differential, a left half shaft, a right half shaft, a left end drive shaft and a right end drive shaft, and the steering mechanism is arranged in the casing. The outer side of the casing, the central transmission mechanism is arranged in the inner middle of the casing, the differential is arranged on the central transmission mechanism, the left half shaft and the right half shaft are respectively arranged on the left and right sides of the casing, and the right end and right end of the left half shaft The left end of the half shaft is respectively connected with the left and right sides of the central transmission mechanism, and is characterized in that it also includes a left universal joint, a right universal joint, a left planetary gear mechanism, a right planetary gear mechanism, a left end transmission shell and a right end In the transmission casing, the upper left end of the casing is provided with an upper left shaft, and the lower end of the left end of the casing is provided with a lower left shaft. The axes of the upper left shaft and the lower left shaft coincide, and the upper left shaft and the lower left shaft can rotate relative to the left end of the casing. , the upper end of the right end of the casing is provided with an upper right shaft, and the lower end of the right end of the casing is provided with a lower right shaft. The axes of the upper right shaft and the lower right shaft coincide, and the upper right shaft and the lower right shaft can be relative to the right end of the casing. Rotation; the left end transmission casing includes a left casing 1 and a left casing 2, the right end of the left casing 1 is arranged on the upper left shaft and the lower left shaft, the left end of the left casing 1 is worn inside the left casing 2, the left casing 1 and the left casing are The second constitutes a rotational connection, the left end drive shaft is installed in the left casing one and forms a rotational connection with the left casing one, the right end of the left universal joint is connected with the left end of the left half shaft, and the left end of the left universal joint is connected with the left end drive shaft. The left end of the planetary gear is connected to the right end, and the left planetary gear mechanism includes a left sun gear, a left planetary gear, a left planetary gear carrier and a left ring gear. The left sun gear is meshed with the left planetary gear, the left planetary gear is meshed with the left ring gear, the left ring gear is arranged on the left end of the left shell one, and the left planet gear carrier is arranged on the left end of the second shell; Shell 1 and right shell 2, the left end of right shell 1 is arranged on the upper right shaft and the lower right shaft, the right end of right shell 1 is worn inside the right shell 2, the right shell 1 and the right shell 2 constitute a rotational connection, and the right end The drive shaft is installed in the right shell one and forms a rotational connection with the right shell one, the left end of the right universal joint is connected with the right end of the right half shaft, the right end of the right universal joint is connected with the left end of the right end drive shaft, and the right planetary wheel is connected. The mechanism includes a right sun gear, a right planetary gear, a right planetary gear carrier and a right ring gear, the right sun gear is arranged on the right end of the right end drive shaft, the right planetary gear is arranged on the right traveling gear carrier, the right sun gear and the right planetary gear The right planetary gear is meshed with the right ring gear, the right ring gear is arranged on the right end of the first right shell, and the right planet gear carrier is arranged on the right end of the second right shell. 2. A special front drive axle for a greenhouse tractor according to claim 1, wherein the structures of the left end drive shell and the right end drive shell are symmetrical, and the structures of the left end drive shaft and the right end drive shaft Symmetrical, the structures of the left universal joint and the right universal joint are symmetrical, and the structures of the left planetary gear mechanism and the right planetary gear mechanism are symmetrical. 3. The special front drive axle for a greenhouse tractor according to claim 2, wherein the inwardly inclined angle of the axes of the upper left shaft and the lower left shaft is 7°, and the axes of the upper right shaft and the lower right shaft are at an angle of 7°. The angle of inclination is 7°. 4 . The dedicated front drive axle for a greenhouse tractor according to 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. 4 . The angle is 3.5°. 5 . The special front drive axle for a greenhouse tractor according to claim 1 , wherein the rotation angle of the left end drive casing around the upper left shaft and the lower left shaft is 51°, and the right end drive casing around the upper right shaft is 5. 5 . and the rotation angle of the lower right axis is 51°. 6 . The dedicated front drive axle for a greenhouse tractor according to claim 1 , wherein the left universal joint and the right universal joint are both constant velocity joints. 7 . 7 . The dedicated front drive axle for a greenhouse tractor according to claim 1 , wherein there are three left planetary wheels in the left universal joint and three right planetary wheels in the right universal joint. 8 .

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