CN107131181B - Integrated hydraulic speed changer based on energy regenerating - Google Patents
Integrated hydraulic speed changer based on energy regenerating Download PDFInfo
- Publication number
- CN107131181B CN107131181B CN201710419570.8A CN201710419570A CN107131181B CN 107131181 B CN107131181 B CN 107131181B CN 201710419570 A CN201710419570 A CN 201710419570A CN 107131181 B CN107131181 B CN 107131181B
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- China
- Prior art keywords
- hydraulic
- oil liquid
- transformer
- output shaft
- accumulator
- Prior art date
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000003921 oil Substances 0.000 claims abstract description 27
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of integrated hydraulic speed changer based on energy regenerating.Including novel hydraulic speed-changer, adjustable throttle valve, hydraulic accumulator and hydraulic oil container, there are two oil liquid mouth, input shaft and output shafts for novel hydraulic speed-changer tool, input shaft is driven drive by hydraulic structure between output shaft, one oil liquid mouth of novel hydraulic speed-changer is connected through adjustable throttle valve with hydraulic accumulator, another oil liquid mouth of novel hydraulic speed-changer is connected with hydraulic tank.This system can realize deceleration and raising speed function, and the deceleration or acceleration of output end are realized by the charge and discharge of accumulator energy.Compared with traditional Hydrodynamic transmission, this device is not only able to achieve speed-regulating function, moreover it is possible to by the energy regenerating of braking, using when for accelerating, improving the utilization rate of energy.
Description
Technical field
The present invention relates to a kind of hydrostatic transmissions, become more particularly, to a kind of integrated hydraulic based on energy regenerating
Fast device.
Background technique
Traditional gear transmission has the shortcomings that volume is big, quality is big.Meanwhile acceleration, deceleration and the hair of output end
Motivation coupling, engine can not work in high efficiency point.And the present apparatus can decouple engine and output end, it is low in output end
When fast, hydraulic energy is converted by mechanical energy, is stored in accumulator.When system needs to accelerate, the liquid that is stored in accumulator
Pressure energy can be converted to mechanical energy, just realize the recycling of braking energy in this way.
Summary of the invention
For the above problem in technology, the invention proposes a kind of integrated hydraulic speed changer based on energy regenerating,
Raising speed and reduction of speed function can be achieved, the deceleration, acceleration of output end is realized by the charge and discharge of accumulator energy.Traditional fluid power speed change
Device is compared, this device is not only able to achieve speed-regulating function, moreover it is possible to by the energy regenerating of braking, being used when for accelerating, being improved energy
Utilization rate.
The technical solution adopted by the present invention is that:
The present invention includes hydraulic transformer, adjustable throttle valve, hydraulic accumulator and hydraulic oil container, and hydraulic transformer has
Two oil liquid mouths, input shaft and output shaft, input shaft are driven drive by hydraulic structure between output shaft, hydraulic transformer
One oil liquid mouth is connected through adjustable throttle valve with hydraulic accumulator, another oil liquid mouth and hydraulic oil container of hydraulic transformer connect
It connects.
The hydraulic transformer uses and adds output shaft, stator floats and is connected to the double-acting type blade of output shaft
Pump.
Axis, rotor rotation and connection are fixed and are not connected with having to the original stator of double-acting type vane pump and rotor, stator
There is axis, the present invention improves double-acting type vane pump, improves difference and is that output shaft is arranged, its stator is made to float and connect
To output shaft.
Although having made above-mentioned improvement, the realization of this hydraulic transformer is the conversion between machine driving and oil liquid pressure,
It is a hydraulic transformer in matter rather than hydraulic pump.
The flowing out stream measurer of the oil liquid mouth of the rotational speed difference and output flow at the hydraulic transformer both ends has following relationship:
Q=D (ωi-ωo)=D △ ω
Wherein Q is the flow of pressure control terminal, and D is the discharge capacity of hydraulic transformer, ωiFor input shaft rotating speed, ωoFor output
The revolving speed of axis, △ ω are transmission slip.
The pressure of the oil liquid mouth of the output torque and output flow of the hydraulic transformer has following relationship:
T=Dp
Wherein T is the torque of output shaft, and D is the discharge capacity of hydraulic transformer, and p is that pressure controls end pressure.
The pressure difference at the adjustable throttle valve both ends and there is following relationship by the flow of adjustable throttle valve:
Wherein Q is to pass through flow, CdFor the discharge coefficient of oil liquid, A is the flow area of adjustable throttle valve, and Δ p is section
It is poor to flow valve inlet and outlet pressure, ρ is oil liquid density.
The pressure of the hydraulic accumulator and by hydraulic accumulator flow have following relationship:
Wherein Q is to pass through flow, p0For hydraulic accumulator Preliminary pressure-filled, v0For the volume of hydraulic accumulator, p1For hydraulic storage
It can device pressure.
The beneficial effects of the present invention are:
It is different from conventional fluid torque speed changer, hydraulic transformer of the invention by the aperture of control throttle valve, adjustment input,
The flow for exporting accumulator, to realize speed-regulating function.
Energy and recycling when the use of accumulator of the present invention can store retarding braking.Therefore the present apparatus is not only able to achieve
Accelerate, slow down function, while can by energy storage when slowing down for accelerate when use, improve the utilization rate of energy.
Detailed description of the invention
Fig. 1 is integrated hydraulic speed changer schematic diagram of the present invention.
Fig. 2 is the equivalent structure schematic diagram of hydraulic transformer.
Fig. 3 is a kind of Application Example of the invention.
Fig. 4 is another Application Example of the invention.
In figure: 1, input shaft, 2, hydraulic transformer, 3, adjustable throttle valve, 4, hydraulic accumulator, 5, output shaft, 6, liquid
Pressure oil case, 7, main reducing gear, 8, wheel, 9, fan, 10, hydraulic pump, 11, hydraulic motor.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, the present invention includes hydraulic transformer 2, adjustable throttle valve 3, hydraulic accumulator 4 and hydraulic oil container 6,
For the tool of hydraulic transformer 2 there are two oil liquid mouth, input shaft 1 and output shaft 5, input shaft 1, which arrives between output shaft 5, passes through hydraulic structure biography
Dynamic to drive, an oil liquid mouth of hydraulic transformer 2 is connected through adjustable throttle valve 3 and hydraulic accumulator 4, hydraulic transformer 2
Another oil liquid mouth is connect with hydraulic oil container 6.
Input shaft 1 and output shaft 5 are realized by the conversion of the oil liquid inflow and outflow of two oil liquid mouths in hydraulic transformer 2
Speed regulation, specifically: when oil liquid is successively flowed into hydraulic energy-accumulating after hydraulic transformer 2, adjustable throttle valve 3 from hydraulic oil container 6
After device 4, energy storage is filled with by hydraulic accumulator 4 and realizes that input shaft 1 arrives the deceleration of output shaft 5；When oil liquid from hydraulic accumulator 4 according to
It is secondary be flowed into hydraulic oil container 6 after adjustable throttle valve 3, hydraulic transformer 2 after, pass through hydraulic accumulator 4 release realize input
Axis 1 arrives the raising speed of output shaft 5.
The hydraulic transformer 2 of specific implementation uses double-acting type vane pump, adds an oil liquid on double-acting type vane pump
Mouth and output shaft, and revocable floating is set by stator, it is then attached to output shaft 5.Improved double-acting type leaf
Piece pumps the cascaded structure for being equivalent to hydraulic pump 10 and hydraulic motor 11, as shown in Fig. 2, 10 output flow of hydraulic pump big portion when slowing down
It distributes, fraction is flowed into hydraulic motor 11；10 output flow of hydraulic pump is largely flowed into hydraulic motor 11 when raising speed, small
It flows out part.
The embodiment of the present invention and its implementation process are as follows:
Embodiment 1
Fig. 3 is a kind of application example of the invention, and the present invention is applied in the transmission system of vehicle.Wherein input shaft connects
Engine 7 is connect, output shaft is connected to vehicle main retarder 8.In normal vehicle operation, throttle valve 3, main reducing gear 2 are closed
Become machine driving, input shaft 1 is identical with 5 revolving speed of output shaft.When vehicle deceleration braking, engine speed can be constant, according to
Old work is in higher efficiency section；At this time by adjusting the aperture of throttle valve 3, mechanical energy a part of input is stored in hydraulic
In accumulator 4.When the vehicle accelerates, if output revolving speed is higher than input speed, the aperture of throttle valve 3, hydraulic energy-accumulating are adjusted at this time
The hydraulic energy of device 4 switchs to mechanical energy by hydraulic transformer 2.Engine operation is set to exist by way of energy stores, recycling
Greater efficiency section.
Embodiment 2
Fig. 4 is another application example of the invention, and the present invention is applied in the fan cooling system of engineering machinery.Its
Middle input shaft is connected to engine 7, and output shaft is connected on engineering machinery cooling fan 8.In engineering machinery work, according to work
The different revolving speeds for needing adjustment cooling fan in real time of condition.In order to make engine operation in higher efficiency section, when fan institute
When needing revolving speed lower, engine exports a part of driving fan of energy, and a part adjusts the aperture of throttle valve 3, is stored in hydraulic
In accumulator 4.When the revolving speed needed for fan increases, energy a part needed for fan is provided by engine；Hydraulic accumulator 4 simultaneously
Energy discharged by the adjusting of 3 aperture of throttle valve, be converted to the mechanical energy of driving fan.
Claims (3)
1. a kind of integrated hydraulic transmission system based on energy regenerating, it is characterised in that: including hydraulic transformer (2), can
Mode throttle valve (3), hydraulic accumulator (4) and hydraulic oil container (6), there are two oil liquid mouths, input shaft for hydraulic transformer (2) tool
(1) it arrives to be driven between output shaft (5) by hydraulic structure and drive with output shaft (5), input shaft (1), the one of hydraulic transformer (2)
A oil liquid mouth is connected to control port through adjustable throttle valve (3) and hydraulic accumulator (4), hydraulic transformer (2) it is another
A oil liquid mouth and hydraulic oil container (6) are connected to non-controlling hydraulic fluid port；
The hydraulic transformer (2) uses and adds output shaft, stator floats and is connected to the double-acting type blade of output shaft (5)
Pump；
It is real by the conversion of the oil liquid inflow and outflow of two oil liquid mouths in hydraulic transformer (2) and the pressure change of control port
Now to the speed regulation of output shaft (5)；
When oil liquid is successively flowed into hydraulic accumulator (4) through hydraulic transformer (2), adjustable throttle valve (3) from hydraulic oil container (6)
Afterwards, energy storage is filled with by hydraulic accumulator (4) and realizes that input shaft (1) arrives the deceleration of output shaft (5)；
When oil liquid is successively flowed into hydraulic oil container (6) through adjustable throttle valve (3), hydraulic transformer (2) from hydraulic accumulator (4)
Afterwards, the raising speed for realizing that input shaft (1) arrives output shaft (5) is discharged by hydraulic accumulator (4).
2. a kind of integrated hydraulic transmission system based on energy regenerating according to claim 1, it is characterised in that: institute
The flowing out stream measurer of the control port of the rotational speed difference and output flow at hydraulic transformer (2) both ends stated has following relationship:
Q=D (ωi-ωo)=D △ ω
Wherein Q is the flow of control port, and D is the discharge capacity of hydraulic transformer (2), ωiFor the revolving speed of input shaft (1), ωoIt is defeated
The revolving speed of shaft (5), △ ω are transmission slip.
3. a kind of integrated hydraulic transmission system based on energy regenerating according to claim 1, it is characterised in that: institute
The pressure of the control port of the output torque and output flow for the hydraulic transformer (2) stated has following relationship:
T=Dp
Wherein T is the torque of output shaft (5), and D is the discharge capacity of hydraulic transformer (2), and p is control port pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419570.8A CN107131181B (en) | 2017-06-06 | 2017-06-06 | Integrated hydraulic speed changer based on energy regenerating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419570.8A CN107131181B (en) | 2017-06-06 | 2017-06-06 | Integrated hydraulic speed changer based on energy regenerating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107131181A CN107131181A (en) | 2017-09-05 |
| CN107131181B true CN107131181B (en) | 2019-10-01 |
Family
ID=59734828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710419570.8A Active CN107131181B (en) | 2017-06-06 | 2017-06-06 | Integrated hydraulic speed changer based on energy regenerating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107131181B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757332B (en) * | 2021-09-02 | 2024-02-20 | 浙江大学 | Mechanical and hydraulic compound transmission system and control method |
| CN116816663B (en) * | 2023-06-16 | 2024-04-19 | 浙江大学 | Hydraulic system with energy supplied by double-input vane pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3247004A1 (en) * | 1982-12-18 | 1984-06-20 | Danfoss A/S, Nordborg | Hydrostatic gear, especially for vehicle drive |
| FR2613016A1 (en) * | 1987-03-25 | 1988-09-30 | Equip Systemes Mecaniques | Hydromechanical vehicle transmission with energy recovery on braking |
| WO2008033378A1 (en) * | 2006-09-12 | 2008-03-20 | Purdue Research Foundation | Power split transmission with energy recovery |
| CN103052796A (en) * | 2010-11-30 | 2013-04-17 | 三菱重工业株式会社 | Renewable energy extraction device such as wind turbine with hydraulic transmission |
| CN207297520U (en) * | 2017-06-06 | 2018-05-01 | 浙江大学 | A kind of integrated hydraulic speed changer based on energy regenerating |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH116557A (en) * | 1997-06-18 | 1999-01-12 | Daikin Ind Ltd | Power recovering device of vehicle |
| GB0614930D0 (en) * | 2006-07-27 | 2006-09-06 | Arternis Intelligent Power Ltd | Hydrostatic regenerative drive system |
| US7744499B2 (en) * | 2007-01-22 | 2010-06-29 | Southwest Research Institute | Hydro-mechanical transmission |
| US20120065854A1 (en) * | 2010-09-10 | 2012-03-15 | Caterpillar Inc. | System and method to prevent shift hunting in a powertrain |
| EP3003756B1 (en) * | 2013-06-03 | 2019-05-08 | Volvo Construction Equipment AB | A working machine power system |
| JP6605242B2 (en) * | 2015-07-08 | 2019-11-13 | 株式会社神戸製鋼所 | Hydraulic drive device for work machine |
-
2017
- 2017-06-06 CN CN201710419570.8A patent/CN107131181B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3247004A1 (en) * | 1982-12-18 | 1984-06-20 | Danfoss A/S, Nordborg | Hydrostatic gear, especially for vehicle drive |
| FR2613016A1 (en) * | 1987-03-25 | 1988-09-30 | Equip Systemes Mecaniques | Hydromechanical vehicle transmission with energy recovery on braking |
| WO2008033378A1 (en) * | 2006-09-12 | 2008-03-20 | Purdue Research Foundation | Power split transmission with energy recovery |
| CN103052796A (en) * | 2010-11-30 | 2013-04-17 | 三菱重工业株式会社 | Renewable energy extraction device such as wind turbine with hydraulic transmission |
| CN207297520U (en) * | 2017-06-06 | 2018-05-01 | 浙江大学 | A kind of integrated hydraulic speed changer based on energy regenerating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107131181A (en) | 2017-09-05 |
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