CN207018464U - A kind of machine liquid composite transmission based on Stress control - Google Patents
A kind of machine liquid composite transmission based on Stress control Download PDFInfo
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- CN207018464U CN207018464U CN201720648768.9U CN201720648768U CN207018464U CN 207018464 U CN207018464 U CN 207018464U CN 201720648768 U CN201720648768 U CN 201720648768U CN 207018464 U CN207018464 U CN 207018464U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000002706 hydrostatic effect Effects 0.000 abstract description 10
- 230000009467 reduction Effects 0.000 abstract description 6
- 230000003252 repetitive effect Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007659 motor function Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model discloses a kind of machine liquid composite transmission based on Stress control.Including pump/motor unit, novel hydraulic speed-changer and hydraulic oil container, novel hydraulic speed-changer has two fluid mouths, input shaft and output shaft, and input shaft is driven drive between output shaft by hydraulic structure；Pump/motor unit is shaft type, the input shaft of pump/motor unit and novel hydraulic speed-changer is coaxially connected, pump/motor unit is connected with a fluid mouth of novel hydraulic speed-changer and communicated, and another fluid mouth of pump/motor unit and novel hydraulic speed-changer is all connected to hydraulic oil container.The system can realize raising speed and reduction of speed function, with load needed for rotating speed and moment of torsion match.Compared with conventional hydrostatic is driven, the repetitive component in hydraulic pressure Hydraulic Pump-Motor System and pipeline connection are eliminated, therefore structure is simpler, transmission efficiency is higher.
Description
Technical field
A kind of hydrostatic transmission is the utility model is related to, is answered more particularly, to a kind of machine liquid based on Stress control
Close transmission system.
Background technology
Traditional hydrostatic transmissions technology is compact-sized because its power-weight ratio is high, easily realizes the system of high torque etc. one
Row advantage is widely used in engineering machinery field.But it is limited by the efficiency of current hydraulic pump motor element, hydrostatic transmissions
The whole efficiency of system is not universal high, and especially under relatively low load behavior, the efficiency of hydraulic variable flow element is with the reduction of discharge capacity
And decline to a great extent.In order to improve the advantage of hydrostatic transmissions technology, in system level, hydraulic pressure is formed by using hydraulic accumulator
Hybrid power system, realize Brake energy recovery and start power-assisted；In element aspect, by changing to element internal structure
Come in improve efficiency of the hydraulic pump motor under relatively low discharge capacity.In addition, hydrostatic transmissions and gear drive are combined, machine liquid is formed
Transmission, can integrate the function of stepless speed regulation of hydrostatic transmissions with it is gear-driven efficiently, effectively compensate for two kinds of biographies
The respective deficiency of flowing mode.But it is driven using the machine liquid of epicyclic train because its structure is relative complex, therefore cost is higher.
Utility model content
For the above mentioned problem in technology, the utility model proposes a kind of machine liquid Composite Transmission system based on Stress control
System, raising speed and reduction of speed function, realization and the matching of rotating speed and moment of torsion needed for load can be achieved.Compared with conventional hydrostatic is driven,
The repetitive component in hydraulic pump motor element and pipeline connection are eliminated, therefore structure is simpler, transmission efficiency is higher.
The technical solution adopted in the utility model is：
The utility model includes pump/motor unit, novel hydraulic speed-changer and hydraulic oil container, novel hydraulic speed-changer
With two fluid mouths, input shaft and output shaft, input shaft is driven drive between output shaft by hydraulic structure；Variable pump/
Motor unit is shaft type, and pump/motor unit has two fluid mouths, input shaft and output shaft, pump/motor unit
Input shaft and output shaft be fixedly and coaxially connected relation for Synchronous Transmission；Described in the input shaft of pump/motor unit is used as
The input shaft of machine liquid composite transmission, the output shaft of pump/motor unit and the input shaft of novel hydraulic speed-changer pass through
Shaft coupling is fixedly and coaxially connected, the output shaft of the output shaft of pump/motor unit as the machine liquid composite transmission；
Pump/motor unit is connected with a fluid mouth of novel hydraulic speed-changer and communicated, pump/motor unit and novel hydraulic
Another fluid mouth of speed changer is all connected to hydraulic oil container.
Described novel hydraulic speed-changer uses and sets up an output shaft, stator floats and is connected to the double acting of output shaft
Formula vane pump.
The original stator of double-acting type vane pump and rotor, stator are fixed and are not connected with having axle, and rotor is rotated and connected
Have axle, the utility model is improved to double-acting type vane pump, improve difference be set output shaft, make its stator float and
It is connected to output shaft.In addition to stator and input and output shaft improve, double-acting type vane pump, which also has, adds a fluid mouth.
Although having made above-mentioned improvement, novel hydraulic speed-changer is actually the conversion between machine driving and oil liquid pressure,
It is substantially a hydraulic transformer rather than hydraulic pump.
Pass through the oil of two fluid mouths in the different control novel hydraulic speed-changers of the mode of operation of pump/motor unit
The machine liquid composite transmission is realized in the conversion of liquid inflow and outflow, and the change of pump/motor unit swashplate angle
Speed governing between input shaft and output shaft.
When described pump/motor cell operation is under variable pump pattern, the original input torque input of input shaft
To pump/motor unit, the output torque of pump/motor unit output shaft is through shaft coupling mechanical transfer to New buckling
The input shaft of fast device, while pump/motor unit output flow produces to novel hydraulic speed-changer, driving novel hydraulic speed-changer
On the moment of torsion that raw positive-torque and the mechanical transfer that is added to obtain so that the output speed of novel hydraulic speed-changer turns higher than input
Speed, realize raising speed.
When described pump/motor cell operation is under variable displacement motor pattern, novel hydraulic speed-changer output flow
To pump/motor unit, driving hydraulic motor produces positive-torque simultaneously and the original input torque of input shaft is together through shaft coupling
Mechanical transfer is on the input shaft of novel hydraulic speed-changer so that and the output speed of novel hydraulic speed-changer is less than input speed,
Realize reduction of speed.
The flowing out stream measurer of the speed discrepancy at described novel hydraulic speed-changer both ends and the fluid mouth of output flow has following
Relation：
Q=D (ωi-ωo)=D Δs ω
Wherein Q be Stress control end flow, D be novel hydraulic speed-changer discharge capacity, ωiFor input shaft rotating speed, ωoFor
The rotating speed of output shaft, Δ ω are transmission slip.
The output torque of described novel hydraulic speed-changer and the pressure of the fluid mouth of output flow have following relation：
T=Dp
Wherein T is the moment of torsion of output shaft, and D is the discharge capacity of novel hydraulic speed-changer, and p is Stress control end pressure.
The beneficial effects of the utility model are：
Realize that speed governing is different by changing variable element discharge capacity from conventional hydrostatic speed changer, novel hydraulic speed-changer passes through
The pressure of control pressure control terminal realizes different output shaft torque,s, so as to realize speed-regulating function.
Pump/motor unit is coupled on the input shaft of the hydraulic transformer and just forms a Novel machine liquid power train
System.The function of the hydraulic transformer liquid collecting press pump and hydraulic motor compared with conventional hydrostatic speed changer, eliminates liquid in one
Repetitive component and pipeline connection in press pump motor component, therefore structure is simpler, transmission efficiency is higher.Pass through variable pump/horse
Up to the regulation of element variable mechanism, it is possible to achieve the switching of pump/motor function and different control pressures, so as to realize machine liquid
The speed governing of transmission system.Compared with using planetary machine liquid transmission system, the machine liquid transmission system simplifies transmission system
Structure, provide a kind of brand-new machine liquid kind of drive for engineering machinery.
Brief description of the drawings
Fig. 1 is Tthe utility model system schematic diagram.
Fig. 2 is the principle of equal effects structure chart of novel hydraulic speed-changer.
Fig. 3 is a kind of Application Example of the present utility model.
Fig. 4 is another Application Example of the present utility model.
In figure：1st, input shaft, 2, pump/motor unit, 3, novel hydraulic speed-changer, 4, output shaft, 5, hydraulic oil
Case, 6, diesel engine, 7, main reducing gear, 8, cooling fan, 9, constant displacement pump, 10, fixed displacement motor.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to the utility model.
As shown in figure 1, the utility model includes pump/motor unit 2, novel hydraulic speed-changer 3 and hydraulic oil container 5,
There is novel hydraulic speed-changer 3 two fluid mouths, input shaft and output shaft, input shaft to be passed between output shaft by hydraulic structure
It is dynamic to drive；Pump/motor unit 2 is shaft type, and pump/motor unit 2 has two fluid mouths, input shaft and output
Axle, the input shaft and output shaft of pump/motor unit 2 are fixedly and coaxially connected relation for Synchronous Transmission；Pump/motor list
Input shaft 1 of the input shaft of member 2 as the machine liquid composite transmission, the output shaft and New of pump/motor unit 2
The input shaft of pressure and speed device 3 is fixedly and coaxially connected by shaft coupling, and the output shaft of pump/motor unit 2 is as the machine liquid
The output shaft 4 of composite transmission；Pump/motor unit 2 is connected with a fluid mouth of novel hydraulic speed-changer 3 and communicated,
Another fluid mouth of pump/motor unit 2 and novel hydraulic speed-changer 3 is all connected to hydraulic oil container 5.
Pass through two fluid mouths in the different control novel hydraulic speed-changers 3 of the mode of operation of pump/motor unit 2
The conversion of fluid inflow and outflow, realize the speed governing between the input shaft 1 and output shaft 4 of the machine liquid composite transmission.Specifically
For：
When pump/motor unit 2 is operated under variable pump pattern, 1 original input torque of input shaft is input to change
Pump/motor unit 2 is measured, the output torque of the output shaft of pump/motor unit 2 is through shaft coupling mechanical transfer to novel hydraulic speed change
The input shaft of device 3, while the output flow of pump/motor unit 2 drives novel hydraulic speed-changer 3 to novel hydraulic speed-changer 3
Produce on positive-torque and the moment of torsion of the mechanical transfer that is added to acquisition so that the output speed of novel hydraulic speed-changer 3 is higher than input
Rotating speed, realize raising speed.
When pump/motor unit 2 is operated under variable displacement motor pattern, the output flow of novel hydraulic speed-changer 3 to change
Pump/motor unit 2 is measured, driving pump/motor unit 2 produces positive-torque and passed through together with 1 original input torque of input shaft
Shaft coupling mechanical transfer is on the input shaft of novel hydraulic speed-changer 3 so that the output speed of novel hydraulic speed-changer 3 is less than defeated
Enter rotating speed, realize reduction of speed.
The utility model can make element manipulation in pump by regulation of the pump/motor stroking mechanism in zero-bit both sides
Pattern or motoring mode.Whole system can realize two kinds of functions of raising speed and reduction of speed simultaneously.If each member in Fig. 1 shown devices
Part is regarded as ideal element, then the input speed ω of whole deviceiWith output speed ωo, input torque TiWith output torque ToDeposit
In following relation：
Wherein DcFor the delivery of pump/motor, ToFor output shaft output torque, TiFor input shaft input torque, x is
Swashplate angle coefficient, x ∈ (- 1,1).Work as x<When 0, pump/motor is operated under hydraulic motor pattern, and output speed is less than defeated
Enter rotating speed, output torque is more than input torque；Work as x>When 0, pump/motor is operated under hydraulic pump pattern, and output speed is big
In input speed, output torque is less than input torque.
The novel hydraulic speed-changer 2 of specific implementation uses double-acting type vane pump, and one is set up on double-acting type vane pump
Fluid mouth and output shaft, and stator is arranged to revocable floating, it is then attached to output shaft 4.Double acting after improvement
Formula vane pump is equivalent to the constant displacement pump 9 of same displacement and the cascaded structure of fixed displacement motor 10, as shown in Fig. 2 constant displacement pump 9 when slowing down
Output flow largely flows out, and fraction is flowed into fixed displacement motor 10；The output flow of constant displacement pump 9 is largely flowed into fixed during raising speed
Measure motor 10, fraction outflow.
Embodiment of the present utility model and its implementation process are as follows：
Embodiment 1
Fig. 3 is a kind of application example of the present utility model, and the utility model is applied in the transmission system of engineering machinery.
Wherein input shaft is connected to diesel engine 6, and output shaft is connected to engineering machinery main reducing gear 7.When engineering machinery starts, it is necessary to defeated
Go out high pulling torque, the slow-speed of revolution.Pump/motor cell operation now can be made in a motoring mode.With engineering machinery speed
Increase, can in real time according to needed for moment of torsion adjust swashplate angle, to change output torque.When engineering machinery in the case of inoperative
When being travelled on road surface, car speed is higher.Pump/motor cell operation now can be made in a pumping mode.
Embodiment 2
Fig. 4 is another application example of the present utility model, and the utility model is applied into the fan coolling in engineering machinery
In system.Wherein input shaft is connected to diesel engine 6, and output shaft is connected on engineering machinery cooling fan 8.In engineering machinery work
When making, according to the different rotating speeds for needing adjustment cooling fan in real time of operating mode.When operating mode is lighter, pump/motor can be made
Cell operation is in a motoring mode.When operating mode is violent, pump/motor cell operation can be made in a pumping mode, real-time basis
Required adjustment of rotational speed fan actual speed, to realize fan blade raising speed.
Claims (2)
- A kind of 1. machine liquid composite transmission based on Stress control, it is characterised in that：Including pump/motor unit (2), newly Type hydraulic transformer (3) and hydraulic oil container (5), novel hydraulic speed-changer (3) have two fluid mouths, input shaft and output shaft, Input shaft is driven drive between output shaft by hydraulic structure；Pump/motor unit (2) is shaft type, pump/motor Input shaft (1) of the input shaft of unit (2) as the machine liquid composite transmission, the output shaft of pump/motor unit (2) It is fixedly and coaxially connected with the input shaft of novel hydraulic speed-changer (3) by shaft coupling, the output shaft of pump/motor unit (2) Output shaft (4) as the machine liquid composite transmission；The one of pump/motor unit (2) and novel hydraulic speed-changer (3) Individual fluid mouth connection is communicated, and another fluid mouth of pump/motor unit (2) and novel hydraulic speed-changer (3) is all connected to Hydraulic oil container (5).
- A kind of 2. machine liquid composite transmission based on Stress control according to claim 1, it is characterised in that：Described Novel hydraulic speed-changer (3) uses and sets up output shaft, stator floats and is connected to the double-acting type vane pump of output shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720648768.9U CN207018464U (en) | 2017-06-06 | 2017-06-06 | A kind of machine liquid composite transmission based on Stress control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720648768.9U CN207018464U (en) | 2017-06-06 | 2017-06-06 | A kind of machine liquid composite transmission based on Stress control |
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| Publication Number | Publication Date |
|---|---|
| CN207018464U true CN207018464U (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720648768.9U Active CN207018464U (en) | 2017-06-06 | 2017-06-06 | A kind of machine liquid composite transmission based on Stress control |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131277A (en) * | 2017-06-06 | 2017-09-05 | 浙江大学 | Machine liquid composite transmission based on Stress control |
| CN108374875A (en) * | 2018-04-25 | 2018-08-07 | 同济大学 | A kind of frequency conversion change displacement machine hydraulic stepless speed change transmission system |
-
2017
- 2017-06-06 CN CN201720648768.9U patent/CN207018464U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131277A (en) * | 2017-06-06 | 2017-09-05 | 浙江大学 | Machine liquid composite transmission based on Stress control |
| CN107131277B (en) * | 2017-06-06 | 2023-12-26 | 浙江大学 | Machine-liquid compound transmission system based on pressure control |
| CN108374875A (en) * | 2018-04-25 | 2018-08-07 | 同济大学 | A kind of frequency conversion change displacement machine hydraulic stepless speed change transmission system |
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