CN217835359U - Hydraulic transmission system of wheeled tractor - Google Patents
Hydraulic transmission system of wheeled tractor Download PDFInfo
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- CN217835359U CN217835359U CN202222211993.XU CN202222211993U CN217835359U CN 217835359 U CN217835359 U CN 217835359U CN 202222211993 U CN202222211993 U CN 202222211993U CN 217835359 U CN217835359 U CN 217835359U
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Abstract
The utility model discloses a wheeled tractor hydraulic transmission system relates to tractor transmission system technical field, and this system adopts two walking hydraulic motor, and every walking hydraulic motor is respectively through the corresponding wheel of one set of central transmission and differential mechanism drive, and central transmission and differential mechanism are installed respectively in front axle and rear axle, and transfer gear is connected to engine crankshaft's one end, transfer gear all the way with walking hydraulic pump transmission connects, and another way is connected with the transmission of back power take off. Because the gearbox has been removed, the utility model discloses not only simplify transmission structure, alleviateed weight, realized stepless speed control, full play central drive and differential mechanism and hydraulic motor's advantage separately, can transmit the power of engine for back power take-off through transfer device in addition, it is further, can also realize the preceding power take-off of engine through multiple power takeoff mode to fine satisfied the demand of articulating agricultural implement to operation power.
Description
Technical Field
The utility model relates to a tractor transmission technical field especially relates to a wheeled tractor's hydraulic transmission system.
Background
The tractor transmission system is used for transmitting the power of an engine to a driving wheel and a power output shaft and is divided into a mechanical transmission system and a hydraulic transmission system, and at present, a wheeled tractor mainly adopts the mechanical transmission system. The mechanical transmission system mainly comprises a clutch, a gearbox, a central transmission, a differential, a final transmission, a power output shaft and the like. Although the mechanical transmission efficiency is high, when the tractor works in a farmland, the tractor generally works at a low speed and a large load, and when the tractor works in the farmland, components of a transmission system are easily damaged due to overload or improper operation, so that the service life of equipment is shortened, and the maintenance cost is increased. In addition, when the tractor changes the walking speed, a driver needs to operate the mechanical gear shifting mechanism and the clutch mechanism to shift gears and regulate the speed, and the operation is complex.
The hydraulic transmission system adopts hydraulic elements such as a hydraulic pump, a hydraulic motor, a hydraulic control unit and the like to transmit the power of an engine to a driving wheel, and a gearbox is omitted, so that the structure is simplified, the weight is reduced, and stepless speed regulation can be conveniently realized through the hydraulic control unit. However, the known hydraulic transmission system for the wheeled tractor often focuses on the transmission of the walking power, and does not fully consider how to directly transmit the power of the engine after the gearbox is removed, so as to facilitate the operation of hitching the agricultural implement.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a wheeled tractor hydraulic transmission system, it is not only convenient for simplify transmission structure, and weight reduction realizes stepless speed control, can realize the power take off of engine moreover, has fine satisfied the demand of articulating agricultural implement to operation power.
In order to solve the technical problem, the technical scheme of the utility model is that: a wheeled tractor hydraulic transmission system comprising: the traveling hydraulic motor is connected with the traveling hydraulic pump and is controlled by the traveling control unit, the traveling hydraulic motor comprises a front traveling hydraulic motor and a rear traveling hydraulic motor, the front traveling hydraulic motor and the rear traveling hydraulic motor drive corresponding wheels through a set of central transmission and differential mechanism respectively, and the central transmission and differential mechanism are respectively arranged on a front axle and a rear axle; one end of the engine crankshaft is connected with a transfer device, one path of the transfer device is in transmission connection with the walking hydraulic pump, and the other path of the transfer device is in transmission connection with the rear power output device.
The transfer device is in transmission connection with the rear power output device through a rear output clutch mechanism.
The hydraulic transmission system comprises a front power output device, and the other end of the engine crankshaft is in transmission connection with the front power output device.
The hydraulic transmission system comprises a front power output device, and the transfer device is in transmission connection with the front power output device through a front output clutch mechanism.
The hydraulic transmission system comprises a front power output device, a front output hydraulic pump, a front output hydraulic motor and a front output control unit, the transfer device is in transmission connection with the front output hydraulic pump, and the front output hydraulic motor is connected with the front output hydraulic pump and is controlled by the front output control unit to drive the front power output device.
The hydraulic transmission system comprises a rear output hydraulic pump, a rear output hydraulic motor and a rear output control unit, the transfer device is in transmission connection with the rear output hydraulic pump, and the rear output hydraulic motor is connected with the rear output hydraulic pump and is controlled by the rear output control unit to drive the rear power output device.
The walking hydraulic pump is formed by connecting two hydraulic pumps with different discharge capacities and different pressures in series.
After the technical scheme is adopted, the utility model discloses the technological effect who gains is:
the utility model discloses a wheeled tractor hydraulic transmission system adopts two walking hydraulic motors, respectively through the corresponding wheel of one set of central transmission and differential mechanism drive, central transmission and differential mechanism are installed respectively in front axle and rear axle, and transfer device is connected to engine crankshaft's one end, transfer device all the way with walking hydraulic pump drive connects, and another way is connected with back power take off transmission, owing to removed the gearbox, it has not only simplified the transmission structure, has alleviateed weight, has realized stepless speed regulation, can full play central transmission and differential mechanism and hydraulic motor's advantage separately, can realize back power take off through transfer device with the power transmission of engine for back power take off, and is further, can also realize the preceding power take off of engine through multiple power takeoff mode to fine satisfied the demand of articulating agricultural implement to operation power.
Drawings
Fig. 1 is a schematic structural principle diagram of a hydraulic transmission system embodiment 1 of a wheeled tractor according to the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the hydraulic transmission system of the wheeled tractor according to the present invention;
fig. 3 is a schematic structural diagram of embodiment 3 of the hydraulic transmission system of the wheeled tractor according to the present invention;
fig. 4 is a schematic structural diagram of embodiment 4 of the hydraulic transmission system of the wheeled tractor according to the present invention;
fig. 5 is a schematic structural diagram of embodiment 5 of the hydraulic transmission system of the wheeled tractor according to the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
As shown in fig. 1, a hydraulic transmission system for a wheeled tractor includes: the walking hydraulic pump, walking hydraulic motor and walking control unit, walking hydraulic motor with the walking hydraulic pump be connected and by walking control unit control, walking hydraulic motor is including preceding walking hydraulic motor and back walking hydraulic motor, preceding walking hydraulic motor with back walking hydraulic motor is respectively through the corresponding wheel of one set of central transmission and differential mechanism drive.
One end of the engine crankshaft is connected with a transfer device, one path of the transfer device is in transmission connection with the walking hydraulic pump, and the other path of the transfer device is in transmission connection with the rear power output device. In this embodiment, the transfer case is in transmission connection with the rear power output device through a rear output clutch mechanism.
Example 2
As shown in fig. 2, the structure of the embodiment 2 is basically the same as that of the embodiment 1, but the hydraulic transmission system is further provided with a front power output device, and the specific structure is that the other end of the crankshaft of the engine is in transmission connection with the front power output device.
Example 3
As shown in fig. 3, the configuration of embodiment 3 is substantially the same as that of embodiment 2, except that the power take-off position and the power take-off mode of the front power output device are different, and the specific configuration is that the transfer case is in transmission connection with the front power output device through a front output clutch mechanism.
Example 4
As shown in fig. 4, the embodiment 4 has substantially the same structure as the embodiment 2, except that the power take-off position and the power take-off mode of the front power output device are different, and specifically, the hydraulic transmission system further comprises a front output hydraulic pump, a front output hydraulic motor and a front output control unit, the transfer device is in transmission connection with the front output hydraulic pump, and the front output hydraulic motor is connected with the front output hydraulic pump and is controlled by the front output control unit to drive the front power output device.
Example 5
As shown in fig. 5, the construction of embodiment 5 is substantially the same as that of embodiment 1 except for the power transmitting construction of the transfer case, which is driven by the rear output hydraulic motor in this embodiment, and the rear power output device. The hydraulic transmission system comprises a transfer device, a rear output hydraulic pump, a rear output hydraulic motor and a rear output control unit, wherein the transfer device is in transmission connection with the rear output hydraulic pump, and the rear output hydraulic motor is connected with the rear output hydraulic pump and is controlled by the rear output control unit to drive the rear power output device.
The utility model discloses not be limited to above-mentioned embodiment, for example, in order to improve the performance of hydraulic pump, the utility model discloses a walking hydraulic pump can be established ties by two different and different hydraulic pumps of pressure of discharge capacity and form, for example a hydraulic pump adopts high pressure, little discharge capacity, and another hydraulic pump adopts low pressure, big discharge capacity, and both can accomplish the advantage complementary when cooperating the use.
All kinds of improvements made based on the conception, structure, method and principle of the utility model will fall into the protection scope of the utility model.
Claims (7)
1. A wheeled tractor hydraulic transmission system comprising:
a walking hydraulic pump, a walking hydraulic motor and a walking control unit, wherein the walking hydraulic motor is connected with the walking hydraulic pump and is controlled by the walking control unit,
the traveling hydraulic motors comprise a front traveling hydraulic motor and a rear traveling hydraulic motor, the front traveling hydraulic motor and the rear traveling hydraulic motor drive corresponding wheels through a set of central transmission and differential mechanism respectively, and the central transmission and differential mechanism are respectively arranged on a front axle and a rear axle;
one end of the engine crankshaft is connected with a transfer device, one path of the transfer device is in transmission connection with the walking hydraulic pump, and the other path of the transfer device is in transmission connection with the rear power output device.
2. The wheeled tractor hydraulic transmission system of claim 1, wherein the transfer case is drivingly connected to the rear power take off through a rear output clutch mechanism.
3. The wheeled tractor hydraulic transmission system of claim 2, wherein the hydraulic transmission system includes a front power take off, the other end of the engine crankshaft being drivingly connected to the front power take off.
4. The wheeled tractor hydraulic transmission system of claim 2, wherein the hydraulic transmission system includes a front power take off, the transfer case being drivingly connected to the front power take off through a front output clutch mechanism.
5. The wheeled tractor hydraulic transmission system of claim 2, wherein the hydraulic transmission system includes a front power take off, a front output hydraulic pump, a front output hydraulic motor, and a front output control unit, the transfer device being drivingly connected to the front output hydraulic pump, the front output hydraulic motor being connected to the front output hydraulic pump and controlled by the front output control unit to drive the front power take off.
6. The wheeled tractor hydraulic transmission system of claim 1, wherein the hydraulic transmission system includes a rear output hydraulic pump, a rear output hydraulic motor, and a rear output control unit, the transfer case being drivingly connected to the rear output hydraulic pump, the rear output hydraulic motor being connected to the rear output hydraulic pump and controlled by the rear output control unit to drive the rear power take off.
7. The wheeled tractor hydraulic transmission system of claim 1, wherein the travel hydraulic pump is formed by two different displacement and different pressure hydraulic pumps connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211993.XU CN217835359U (en) | 2022-08-22 | 2022-08-22 | Hydraulic transmission system of wheeled tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211993.XU CN217835359U (en) | 2022-08-22 | 2022-08-22 | Hydraulic transmission system of wheeled tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217835359U true CN217835359U (en) | 2022-11-18 |
Family
ID=84015806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222211993.XU Active CN217835359U (en) | 2022-08-22 | 2022-08-22 | Hydraulic transmission system of wheeled tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217835359U (en) |
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2022
- 2022-08-22 CN CN202222211993.XU patent/CN217835359U/en active Active
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