CN211343920U - Hydraulic machinery continuously variable transmission - Google Patents
Hydraulic machinery continuously variable transmission Download PDFInfo
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- CN211343920U CN211343920U CN201921260783.1U CN201921260783U CN211343920U CN 211343920 U CN211343920 U CN 211343920U CN 201921260783 U CN201921260783 U CN 201921260783U CN 211343920 U CN211343920 U CN 211343920U
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Abstract
The utility model discloses a hydraulic machinery buncher, including power input shaft, pump accuse hydraulic motor system, confluence planetary gear mechanism, pair planetary gear reversing mechanism and power output shaft, install the stopper in pair planetary gear reversing mechanism through independent manipulation, can select the tractor to go forward and retreat two kinds of mode, realize the continuous stepless speed regulation output of many sections of tractor power. The utility model discloses a derailleur compact structure, reasonable in design, convenient operation, transmission efficiency are high, have very high economic benefits.
Description
Technical Field
The utility model relates to a hydraulic pressure machinery transmission field, in particular to hydraulic pressure machinery buncher.
Background
The tractor is an important agricultural production mechanical vehicle, the operation to be completed by the tractor is various, the working environment is severe, the external load changes frequently, and the intelligent high-horsepower tractor can change the output transmission ratio of the gearbox in real time according to the external load change, adapts to the torque and rotation speed changes caused by the load change, and has a great development prospect. The hydraulic mechanical stepless speed changer is adopted on the intelligent high-horsepower tractor, the adjustable hydraulic transmission speed ratio and the high mechanical transmission efficiency can be combined, the operation stability and the driving comfort of the tractor can be improved, the dynamic property and the fuel economy of the tractor can be improved, the working efficiency is improved, and the intelligent high-horsepower tractor stepless speed changer is an ideal intelligent high-horsepower tractor stepless transmission form.
Chinese patent publication No.: CN204647180U, name: a kind of high-power tractor hydraulic machinery stepless speed change gear, the hydraulic machinery stepless speed change gear proposed in this patent is made up of three big basic components of variable pump, constant displacement motor, planetary busbar, wherein power input shaft and power output shaft are in the same axial line, when the tractor is going or parking, can realize the output of PTO through the movement of the double-acting clutch of independent manipulation; the output of tractor power is realized after preceding planet row and back planet row converge by busbar hydraulic power and mechanical power, has four end to end's work section simultaneously and is the form of output after hydraulic flow and mechanical flow converge, is equipped with the synchronous ware of advancing/retreating at busbar mechanical power input shaft left end, and the function of retreating relies on this synchronous ware and has adopted a pair of dead axle meshing gear combined action of idler structure to realize for the gearbox structure is not compact, the installation is difficult.
The hydraulic mechanical stepless speed changer provided at present has a multi-planet-row confluence design and a single-planet-row confluence design, and in the design of a backward gear, a synchronizer and a pair of normally meshed fixed-shaft gear pairs are adopted for realization, so that the problems of incompact structure, low transmission reliability, high noise, difficult installation and the like of the speed changing box occur.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: to above problem, the utility model aims at providing a compact structure, reasonable in design, operate steadily, convenient operation's hydraulic pressure machinery buncher can realize the transmission of the automatic infinitely variable speed of vehicle according to driver's intention and external load change.
The technical scheme is as follows: the utility model provides a hydraulic machinery buncher, including power input shaft, pump accuse hydraulic motor system, confluence planetary gear mechanism, duplex planetary gear reversing mechanism and power output shaft, power input shaft passes through power input shaft gear II and is connected with pump accuse hydraulic motor system one end, pump accuse hydraulic motor system's the other end passes through hydraulic power distribution gear pair and is connected with confluence planetary gear mechanism, confluence planetary gear mechanism is through the public sun gear hub connection duplex planetary gear reversing mechanism of switching-over planetary gear, duplex planetary gear reversing mechanism connects power output shaft, power input shaft right-hand member directly provides power output with engine power as PTO, conveniently provides power for intelligent large horsepower tractor's external load.
The pump control hydraulic motor system comprises a fixed displacement motor and a variable displacement pump, one end of the variable displacement pump is connected with one end of the fixed displacement motor, the other end of the variable displacement pump is connected with an input shaft of the variable displacement pump, an input shaft gear of the variable displacement pump is arranged on the input shaft of the variable displacement pump, the input shaft gear of the variable displacement pump is meshed with a power input shaft gear II, the other end of the fixed displacement motor is connected with an output shaft of the motor, a motor output shaft gear is arranged on the output shaft of the motor, and the motor output shaft gear is meshed with a common sun gear I of a confluence planet row to form a.
The confluence planetary gear mechanism comprises a confluence planetary gear I and a confluence planetary gear II, a power input shaft is connected with one end of a mechanical power distribution gear pair, the other end of the mechanical power distribution gear pair is connected with the confluence planetary gear mechanism through one end of the confluence planetary gear mechanical power input shaft, the mechanical power distribution gear pair is formed by meshing a power input shaft gear I and a confluence planetary gear mechanical power input shaft gear, the other end of the confluence planetary gear mechanical power input shaft is connected with a front gear ring rear planet carrier mechanism I shared by the confluence planetary gear I and the confluence planetary gear II, and the transmission of mechanical power is realized.
The confluence planetary line mechanism also comprises a confluence planetary line III, a confluence planetary line hydraulic power input common sun wheel shaft is sleeved outside a confluence planetary line mechanical power input shaft, the hydraulic power output by a pump-controlled hydraulic motor mechanism is received, hydraulic flow and mechanical flow are converged by using the confluence planetary line I and then output from a front planet carrier rear gear ring mechanism shared by the confluence planetary line I and the confluence planetary line II, the front planet carrier rear gear ring mechanism is simultaneously and fixedly connected with a confluence planetary line III planet carrier of the confluence planetary line III, the confluence planetary line II and the confluence planetary line III share a confluence planetary line common sun wheel II, the power is respectively output from a confluence planetary line power output common sun wheel shaft and a confluence planetary line III gear ring shaft of the confluence planetary line III after being compounded by the confluence planetary line II and the confluence planetary line III, a wet clutch I is arranged at the right end of the confluence planetary line III gear ring shaft, and a wet clutch II is arranged at the right end of the confluence planetary line power output common sun wheel shaft, the power can be interrupted or transmitted backwards by the wet clutch, respectively.
The duplex planetary gear reversing mechanism is provided with a common sun gear of a reversing planetary row, the reversing front planetary row and the reversing rear planetary row share a front gear ring and a rear planet carrier mechanism II, a brake I is arranged on a planet carrier of the reversing front planetary row, a brake II is arranged on a gear ring of the reversing rear planetary row, power can be respectively output in a forward direction or a reverse direction through a planet carrier shaft of the reversing rear planetary row and a common sun gear shaft of the reversing planetary row under the action of a wet clutch III and a wet clutch IV by independently operating the brake I or the brake II, and the power is transmitted to a power output shaft through a gear pair which is fixedly connected to the right end of the middle output shaft and meshed with a gear of the power output shaft, so that the stepless speed change output of the power of the tractor is realized.
Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: the duplex planetary gear reversing mechanism is adopted, so that the operation is simpler and more convenient, two working modes of forward movement and backward movement can be independently selected, stepless speed change output can be realized in both the two working modes, and the specifications of the planetary gears in the duplex planetary gear reversing mechanism can adopt gears with the same specification parameters as the confluent planetary gears in the confluent planetary gear row mechanism, so that shafts are not required to be added, the size of a gear box is reduced, and the operation noise is reduced; the power distribution can meet different working conditions of the tractor, the output rotating speed and the torque are automatically adjusted according to the outside, and the engine is ensured to work in the optimal state; the advantages of mechanical step-variable speed and hydrostatic stepless speed change are integrated, and the multi-section hydraulic machines output after confluence, so that the transmission efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of a hydraulic mechanical continuously variable transmission.
Detailed Description
As shown in fig. 1, the utility model discloses a hydraulic machinery continuously variable transmission includes power input shaft 1, pump accuse hydraulic motor system 6, confluence planetary row mechanism, pair planetary gear reversing mechanism 20 and power output shaft 44, power input shaft 1 is connected with pump accuse hydraulic motor system 6 one end through power input shaft gear II 10, the other end of pump accuse hydraulic motor system 6 is connected with confluence planetary row mechanism through hydraulic power distribution gear pair 40, confluence planetary row mechanism connects pair planetary gear reversing mechanism 20 through the public sun gear axle 16 of switching-over planetary row, pair planetary gear reversing mechanism 20 connects power output shaft 44, power input shaft 1 right-hand member directly is regarded as the PTO and exports engine power, conveniently provides power for the external load of intelligent large horsepower tractor.
The pump control hydraulic motor system 6 comprises a fixed displacement motor 5 and a variable displacement pump 7, one end of the variable displacement pump 7 is connected with one end of the fixed displacement motor 5, the other end of the variable displacement pump 7 is connected with a variable displacement pump input shaft 8, a variable displacement pump input shaft gear 9 is arranged on the variable displacement pump input shaft 8, the variable displacement pump input shaft gear 9 is meshed with a power input shaft gear II 10, the other end of the fixed displacement motor 5 is connected with a motor output shaft 4, a motor output shaft gear 3 is arranged on the motor output shaft 4, and the motor output shaft gear 3 is meshed with a common sun gear I39 of a confluence planet row to form a hydraulic power distribution gear pair 40.
The confluence planetary line mechanism comprises a confluence planetary line I37 and a confluence planetary line II 33, a power input shaft 1 is connected with one end of a mechanical power distribution gear pair 41, the other end of the mechanical power distribution gear pair 41 is connected with the confluence planetary line mechanism through one end of a confluence mechanical power input shaft 36, the mechanical power distribution gear pair 41 is formed by meshing a power input shaft gear I2 and a confluence mechanical power input shaft gear 42, the other end of the confluence mechanical power input shaft 36 is connected with a front-ring rear planet carrier mechanism I35 shared by the confluence planetary line I37 and the confluence planetary line II 33, and transmission of mechanical power is achieved.
The confluence planetary line mechanism also comprises a confluence planetary line III 30, a confluence planetary line mechanical power input shaft 36 is sleeved outside a confluence planetary line hydraulic power input common sun gear shaft 38, receives hydraulic power output by a pump-controlled hydraulic motor mechanism, uses a confluence planetary line I37 to confluence hydraulic flow and mechanical flow, and then outputs from a front planet carrier rear gear ring mechanism 34 shared by the confluence planetary line I37 and a confluence planetary line II 33, the front planet carrier rear gear ring mechanism 34 is simultaneously fixedly connected with a confluence planetary line III planet carrier 31 of the confluence planetary line III 30, the confluence planetary line II 33 and the confluence planetary line III 30 share a confluence planetary line common sun gear II 32, power is compounded with the confluence planetary line II 33 and the confluence planetary line III 30 and then respectively output from a confluence planetary line power output common sun gear shaft 28 and a confluence planetary line III ring gear shaft 29 of the confluence planetary line III 30, and the right end of the confluence planetary line III ring gear shaft 29 is provided with a wet clutch I27, the right end of the bus power output common sun gear shaft 28 is provided with a wet clutch II 26, and power can be interrupted or transmitted backwards under the action of the wet clutch.
The duplex planetary gear reversing mechanism 20 is provided with a reversing planet row common sun gear 15, a reversing front planet row 21 and a reversing rear planet row 18 share a front gear ring rear planet carrier mechanism II 19, a reversing front planet row planet carrier 23 of the reversing front planet row 21 is provided with a brake I25, a reversing rear planet row gear ring 22 of the reversing rear planet row 18 is provided with a brake II 24, under the action of a wet clutch III 14 and a wet clutch IV 13, power can be respectively output in a forward direction or a reverse direction through a reversing rear planet row planet carrier shaft 17 and a reversing planet row common sun gear shaft 16 through independent operation of the brake I25 or the brake II 24, and the power is transmitted to a power output shaft 44 through a gear pair which is fixedly connected to a middle shaft output gear 11 at the right end of the middle output shaft 12 and meshed with a power output shaft gear 43, so that the stepless speed change output of dragging is realized.
The utility model discloses an among the hydraulic machinery buncher, variable pump 7 passes through high pressure fuel pipe and is connected with quantitative motor 5, and variable pump 7's discharge capacity ratio can be controlled by electronic control module, realizes that the discharge capacity ratio changes from-1 ~ 0- +1, and motor output shaft 4 rotational speeds will change from the reversal ~ stop ~ corotation, realizes converging flowing back and presses the positive and negative rotation of the public sun gear axle 38 of power input.
Claims (5)
1. A hydromechanical continuously variable transmission comprising a power input shaft (1), a pump controlled hydraulic motor system (6), and a power output shaft (44), characterized in that: still include that the planet that converges constructs and the double row planet gear is to mechanism (20) with the turn, power input shaft (1) is connected with pump accuse hydraulic motor system (6) one end through power input shaft gear II (10), the other end of pump accuse hydraulic motor system (6) is connected with the planet that converges through hydraulic power distribution gear pair (40), the planet that converges constructs and is connected double row planet gear reversing mechanism (20) through the public sun gear axle (16) of switching-over planet row, power output shaft (44) is connected to double row planet gear reversing mechanism (20).
2. The hydromechanical continuously variable transmission as claimed in claim 1, wherein: the pump control hydraulic motor system (6) comprises a fixed displacement motor (5) and a variable displacement pump (7), one end of the variable displacement pump (7) is connected with one end of the fixed displacement motor (5), the other end of the variable displacement pump (7) is connected with a variable displacement pump input shaft (8), a variable displacement pump input shaft gear (9) is arranged on the variable displacement pump input shaft (8), the variable displacement pump input shaft gear (9) is meshed with a power input shaft gear II (10), the other end of the fixed displacement motor (5) is connected with a motor output shaft (4), a motor output shaft gear (3) is arranged on the motor output shaft (4), and the motor output shaft gear (3) is meshed with a busbar planet common sun gear I (39) to form a hydraulic power distribution gear pair (40).
3. The hydromechanical continuously variable transmission as claimed in claim 1, wherein: the confluence planetary line mechanism comprises a confluence planetary line I (37) and a confluence planetary line II (33), a power input shaft (1) is connected with one end of a mechanical power distribution gear pair (41), the other end of the mechanical power distribution gear pair (41) is connected with the confluence planetary line mechanism through one end of a confluence mechanical power input shaft (36), the mechanical power distribution gear pair (41) is formed by meshing a power input shaft gear I (2) and a confluence mechanical power input shaft gear (42), the other end of the confluence mechanical power input shaft (36) is connected with a front gear ring rear planet carrier mechanism I (35) shared by the confluence planetary line I (37) and the confluence planetary line II (33), and the transmission of mechanical power is realized.
4. The hydromechanical continuously variable transmission as claimed in claim 1, wherein: the confluence planetary line mechanism also comprises a confluence planetary line III (30), a confluence liquid-discharging hydraulic power input common sun wheel shaft (38) is sleeved outside a confluence planetary line mechanical power input shaft (36), hydraulic power output by a pump-controlled hydraulic motor mechanism is received, a confluence planetary line I (37) is used for converging hydraulic flow and mechanical flow, then the hydraulic flow and the mechanical flow are output from a front planet carrier rear gear ring mechanism (34) shared by the confluence planetary line I (37) and the confluence planetary line II (33), the front planet carrier rear gear ring mechanism (34) is simultaneously fixedly connected with a planet confluence planetary line III planet carrier (31) of the confluence planetary line III (30), the confluence planetary line II (33) and the confluence planetary line III (30) share a confluence planetary line common sun wheel II (32), power is output from the confluence planetary line power output common sun wheel shaft (28) and a confluence planetary line ring wheel shaft (29) of the confluence planetary line III (30) after being compounded with the confluence planetary line III (30) again, and a wet clutch I (27) is arranged at the right end of a gear shaft (29) of the bus planet row III, a wet clutch II (26) is arranged at the right end of a power output common sun gear shaft (28) of the bus row, and power can be interrupted or transmitted backwards under the action of the wet clutches respectively.
5. The hydromechanical continuously variable transmission as claimed in claim 1, wherein: the dual-planetary gear reversing mechanism (20) is provided with a common reversing planetary gear sun gear (15), a common front gear ring rear planet carrier mechanism II (19) is shared by a front reversing planetary gear row (21) and a reversing rear planetary gear row (18), a brake I (25) is arranged on a reversing front planet carrier (23) of the reversing front planetary gear row (21), a brake II (24) is arranged on a reversing rear planet carrier (22) of the reversing rear planetary gear row (18), under the action of a wet clutch III (14) and a wet clutch IV (13), power can be respectively output in the forward direction or the reverse direction through a reversing rear planet carrier shaft (17) and a reversing planetary gear common sun gear shaft (16) by independently operating the brake I (25) or the brake II (24), and the power is transmitted to a power output shaft (44) through a gear pair which a middle shaft output gear (11) fixedly connected at the right end of the middle output shaft (12) is meshed with a power output shaft gear (43), realizing the stepless speed change output of power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921260783.1U CN211343920U (en) | 2019-08-06 | 2019-08-06 | Hydraulic machinery continuously variable transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921260783.1U CN211343920U (en) | 2019-08-06 | 2019-08-06 | Hydraulic machinery continuously variable transmission |
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| CN211343920U true CN211343920U (en) | 2020-08-25 |
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| CN201921260783.1U Active CN211343920U (en) | 2019-08-06 | 2019-08-06 | Hydraulic machinery continuously variable transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360293A (en) * | 2019-08-06 | 2019-10-22 | 江苏农林职业技术学院 | A kind of hydraulic mechanical stepless gearbox |
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2019
- 2019-08-06 CN CN201921260783.1U patent/CN211343920U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360293A (en) * | 2019-08-06 | 2019-10-22 | 江苏农林职业技术学院 | A kind of hydraulic mechanical stepless gearbox |
| CN110360293B (en) * | 2019-08-06 | 2024-04-19 | 江苏农林职业技术学院 | Hydraulic mechanical stepless speed changer |
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