CN116512902A - Tractor hydraulic power output system - Google Patents
Tractor hydraulic power output system Download PDFInfo
- Publication number
- CN116512902A CN116512902A CN202210069276.XA CN202210069276A CN116512902A CN 116512902 A CN116512902 A CN 116512902A CN 202210069276 A CN202210069276 A CN 202210069276A CN 116512902 A CN116512902 A CN 116512902A
- Authority
- CN
- China
- Prior art keywords
- tractor
- hydraulic
- hydraulic motor
- oil pump
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 15
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 238000005461 lubrication Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 27
- 239000003921 oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
- B60K17/105—Units comprising at least a part of the gearing and a torque-transmitting axle, e.g. transaxles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
The utility model discloses a hydraulic power output system of a tractor, which comprises a hydraulic oil pump; a hydraulic motor connected to the hydraulic oil pump; a reduction differential coupled to the hydraulic motor; the hydraulic oil pump is connected with a rear output shaft of the tractor through a first universal joint; the output shaft of the speed reduction differential is connected with the driving shaft of the crawler belt travelling mechanism. The utility model uses the output shaft of the tractor as a power input source, when the power output is needed (namely, when the road condition is not good), a driver starts the main controller, the main controller controls the hydraulic pump and the hydraulic motor to start working, and auxiliary power is given to the tractor, when the power supply is not needed, the hydraulic motor is a plunger motor with zero displacement function, so that the hydraulic motor is in a zero displacement lubrication state, no power is provided, and the synchronism of the tractor and the trailer can be realized.
Description
Technical Field
The utility model relates to the technical field of tractors, in particular to a hydraulic power output system of a tractor.
Background
Under the prior art, the tractor is driven by auxiliary power, the wheel resistance is increased, the adhesive force is reduced, and the tractor is easy to idle and sideslip. When the vehicle runs into a deeper pothole, the wheels can sometimes sink into the mud and cannot go out, and if the vehicle runs only by virtue of traction provided by the tractor, the vehicle cannot run.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and improve the traffic capacity, and provides a hydraulic power output system of a tractor.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a hydraulic power output system of a tractor comprises a hydraulic oil pump; a hydraulic motor connected to the hydraulic oil pump; a reduction differential coupled to the hydraulic motor; the hydraulic oil pump is connected with a rear output shaft of the tractor through a first universal joint; the output shaft of the speed reduction differential is connected with the driving shaft of the crawler belt travelling mechanism.
Preferably, the hydraulic oil pump further comprises a controller in signal connection with the hydraulic oil pump and the hydraulic motor.
Further preferably, the hydraulic motor is a plunger motor having a zero displacement function.
Further preferably, a side gear of the reduction differential is connected to a drive shaft of the crawler travel mechanism.
Further preferably, the drive shaft is connected to the drive housing of the crawler travel mechanism via a second universal joint.
Further preferably, a disc brake is connected between the reduction differential and the second universal joint.
Further preferably, the disc brake is sleeved on the driving shaft.
Further preferably, an input shaft of the reduction differential is connected to the hydraulic motor.
Compared with the prior art, the utility model has the beneficial effects that: when the output shaft of the tractor is used as a power input source and power output and supply are needed (namely, when the road condition is not good, the vehicle runs), a driver controls the hydraulic pump and the hydraulic motor to start working through the control box, auxiliary power is given to the tractor, and meanwhile, the synchronism of the tractor and the trailer can be realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present embodiment;
fig. 2 is a diagram showing the positional relationship between the disc brake and the reduction differential in the present embodiment;
fig. 3 is a structural sectional view of the reduction differential in the present embodiment.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
As shown in fig. 1, a hydraulic power output system of a tractor includes a hydraulic oil pump 10; a hydraulic motor 20 connected to the hydraulic oil pump 10; a reduction differential 30 connected to the hydraulic motor 20, and a main controller 70 signal-connected to the hydraulic pump 10 and the hydraulic motor 20; the hydraulic oil pump 10 is connected with a rear output shaft of the tractor through a first universal joint 40; the side gear of the reduction differential 30 is connected to the drive shaft 51 of the crawler travel mechanism 50, and the drive shaft 51 is connected to the drive case of the crawler travel mechanism 50 via the second universal joint 31.
The crawler belt running mechanism 40 in this embodiment is connected to the bottom of the trailer carriage through a connecting shaft, and the crawler belt running mechanism 40 in this embodiment is an utility model patent applied by the applicant in 2021, 5 and 27, and the disclosure number is CN215155110, and the specific structure is disclosed in this patent and will not be described in detail here.
As shown in fig. 2, a disc brake 60 is connected between the speed reducing differential 30 and the second universal joint 31, and the disc brake is sleeved on the driving shaft 51.
The hydraulic motor 20 in this embodiment is a plunger motor having a zero displacement function.
The input shaft of the reduction differential 30 in this embodiment is connected to the hydraulic motor 10.
As shown in fig. 3, the reduction differential 30 includes a housing, an input shaft 31 disposed in the housing 10, and a reduction mechanism drivingly connected to the input shaft 31, the input shaft 31 being drivingly connected to the hydraulic motor 20; the differential 35 is in transmission connection with the speed reducing mechanism, the differential 35 is provided with two half-shaft gears 351, and the half-shaft gears 351 are respectively fixedly connected with driving shafts of driving wheels of a rear axle crawler running mechanism of the trailer.
The speed reducing mechanism comprises a first transmission mechanism in meshed connection with the input shaft 31, a second transmission mechanism in meshed connection with the first transmission mechanism, and a third transmission mechanism in meshed connection with the second transmission mechanism, wherein the third transmission mechanism is in meshed connection with the differential 35.
In this embodiment, the hydraulic motor 20 drives the input shaft 31 to rotate, so as to drive the first transmission mechanism to rotate, thereby realizing first-stage deceleration; the first transmission mechanism drives the second transmission mechanism to rotate so as to realize second-stage speed reduction; the second transmission mechanism drives the third transmission mechanism to rotate, and the third transmission mechanism drives the differential mechanism 35 to rotate, so that third-stage speed reduction is realized.
Specifically, the first transmission mechanism includes a first transmission shaft 32, a bevel gear 321 disposed on the first transmission shaft 321 and engaged with the input shaft 31, and a driving gear 322 engaged with the second transmission mechanism; the second transmission mechanism includes a second transmission shaft 33, a driven gear 331 disposed on the second transmission shaft 33 and engaged with the driving gear 322, and a second bevel gear 332 engaged with the third transmission mechanism; the third transmission mechanism 1 includes a third transmission shaft 34, and a third bevel gear 341 disposed on the third transmission shaft 34 and engaged with the second bevel gear 332.
In this embodiment, the first transmission shaft 32, the second transmission shaft 33, and the third transmission shaft 34 are provided with bearings 36 at both ends thereof, and are fixed to the housing by flanges.
In this embodiment, the differential 35 includes a gear plate 411 engaged with the third bevel gear 341, a planetary gear 353 engaged with the side gear 351, and a housing 354, and a part of the side gear 351 and the planetary gear 353 are disposed in the housing 354.
One of the side gears 351 located outside the housing 354 is externally sleeved with a connecting member 355 and the gear plate 352, the connecting member 3551 connects and fixes the gear plate 352 with the housing 354 through a pin bolt, and the gear plate 352 is rotatable relative to the side gear 351.
In this embodiment, the outer portion of the connecting member 355 is further sleeved with a bearing 36 and is fixed to the housing via a flange, and one end of the other side gear 351 is also sleeved with a bearing 36 and is fixed to the housing via a flange.
In this embodiment, the two planetary gears 353 in the housing 354 drive the two side gears 351 to rotate, so as to drive the two wheels of the rear axle of the trailer to rotate respectively.
Bearings 36 are also provided at both ends of the side gear 351 and are fixed to the housing by flanges.
In this embodiment, the diameter of the driven gear 331 is larger than the diameter of the driving gear 322 and smaller than the diameter of the gear plate 352, and the fixed reduction ratio is 7:1.
When the vehicle is in a straight run, the rotation speeds of the half shaft gears connected with the left crawler traveling mechanism and the right crawler traveling mechanism are consistent, when the vehicle is in a turning run, the rotation speeds of the two half shaft gears are also inconsistent, and the two planetary gears are caused to rotate due to the inconsistent rotation speeds of the two half shaft gears, so that the difference of the rotation speeds of the wheels on the left side and the right side is realized, the distortion rollover phenomenon of the trailer during the turning is effectively prevented, and the traffic accident is avoided.
In this embodiment, the output shaft of the tractor is used as a power input source during the running process, when the power output is needed (i.e. the road condition is not good), the main controller 70 controls the hydraulic pump 10 and the hydraulic motor 20 to start working, and gives auxiliary power to the tractor, when the power supply is not needed, the hydraulic motor is a plunger motor with zero displacement function, so that the hydraulic motor is in a zero displacement lubrication state, no power is provided, and the synchronicity of the tractor and the trailer can be realized.
The utility model has simple and convenient operation, does not need to reverse for multiple times to accelerate forward, but controls the hydraulic pump and the hydraulic motor to start working through the main controller, and successfully passes over the obstacle by cooperating with the tractor to pull the co-acting power-assisted trailer, thereby greatly saving the average oil consumption of passing the obstacle.
In this embodiment, a pressure sensor is disposed in the hydraulic motor, when the pressure detected by the pressure sensor is greater than an initial set value (220 bar), the displacement of the hydraulic motor reaches full displacement, and if the load continues to rise, the displacement of the hydraulic pump is increased, the working pressure of the hydraulic system is increased, and the tractor is boosted.
When the detected pressure value is smaller than the set value, the load of the embodiment is small, at the moment, the running speed of the tractor is larger than the running speed of the embodiment, the displacement of the hydraulic pump is continuously reduced, namely the speed of the embodiment is increased, after the speed is increased, the working pressure value of the hydraulic system is increased, the pressure value reaches a limit value (300 bar), the hydraulic pump discharges oil, if the load is continuously reduced, the displacement of the hydraulic pump is controlled to continuously reduce, when the displacement is reduced to 11.25cc/r, the hydraulic motor cannot be reversely towed, and the running speed provided by the embodiment is faster than the running speed of the tractor, so that the matching of the running speed of the embodiment and the running speed of the tractor is realized, and therefore, the embodiment can provide auxiliary power for the tractor, and prevent wheels from sinking into mud pits even in a deep pit on a mud road.
When auxiliary power is not needed, the plunger motor with the zero displacement function can be controlled through the control box, so that the hydraulic motor is in a zero displacement lubrication state, and no power is provided. When the driver needs to reverse and get rid of the trouble, the direction of high-pressure oil and low-pressure oil of the hydraulic motor is changed through the control box after the driver is engaged with the reverse gear so as to realize the reverse rotation of the hydraulic motor.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. A hydraulic power take-off system for a tractor, comprising
A hydraulic oil pump (10);
a hydraulic motor (20) connected to the hydraulic oil pump (10);
a reduction differential (30) connected to the hydraulic motor (20);
the hydraulic oil pump (10) is connected with a rear output shaft of the tractor through a first universal joint (40);
an output shaft of the speed reduction differential (30) is connected with a driving shaft (51) of the crawler belt travelling mechanism (50).
2. The tractor hydraulic power take off system of claim 1, further comprising a controller (70) signally connecting the hydraulic oil pump (10) and hydraulic motor (20).
3. The tractor hydraulic power take off system of claim 2, wherein the hydraulic motor (20) is a zero displacement functional plunger motor.
4. A tractor hydraulic power take-off system according to claim 3, characterized in that the side gear of the reduction differential (30) is connected to the drive shaft (51) of the crawler running gear (50).
5. The tractor hydraulic power take-off system of claim 4, wherein the drive shaft (51) is connected to a drive housing of the crawler running mechanism (50) by a second universal joint (31).
6. The tractor hydraulic power take off system of claim 5, wherein a disc brake (60) is connected between the reduction differential (30) and the second universal joint (31).
7. The tractor hydraulic power take off system of claim 6, wherein the disc brake (60) is sleeved on the drive shaft (51).
8. The tractor hydraulic power take off system of claim 7, wherein an input shaft of the reduction differential (30) is connected to the hydraulic motor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210069276.XA CN116512902A (en) | 2022-01-21 | 2022-01-21 | Tractor hydraulic power output system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210069276.XA CN116512902A (en) | 2022-01-21 | 2022-01-21 | Tractor hydraulic power output system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116512902A true CN116512902A (en) | 2023-08-01 |
Family
ID=87396304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210069276.XA Pending CN116512902A (en) | 2022-01-21 | 2022-01-21 | Tractor hydraulic power output system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116512902A (en) |
-
2022
- 2022-01-21 CN CN202210069276.XA patent/CN116512902A/en active Pending
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