CN201679802U - Energy recovery system of hydraulic actuating mechanism - Google Patents
Energy recovery system of hydraulic actuating mechanism Download PDFInfo
- Publication number
- CN201679802U CN201679802U CN2010202113196U CN201020211319U CN201679802U CN 201679802 U CN201679802 U CN 201679802U CN 2010202113196 U CN2010202113196 U CN 2010202113196U CN 201020211319 U CN201020211319 U CN 201020211319U CN 201679802 U CN201679802 U CN 201679802U
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- hydraulic
- oil
- energy
- accumulator
- oil hydraulic
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses an energy recovery system of a hydraulic actuating mechanism, comprising at least one actuating mechanism (4), at least one accumulator (5) for storing energy, at least one hydraulic power source and a hydraulic valve (3). The inlet of a change valve (6) is connected with the accumulator (5), one outlet of the change valve (6) is connected with the inlet of the hydraulic power source by a first oil way (7), and another outlet of the change valve (6) is connected between the actuating mechanism (4) and the hydraulic valve (3) by a second oil way (8). The energy recovery system can efficiently recycle the energy of the hydraulic actuating mechanism in falling (a hydraulic cylinder) or braking (a hydraulic motor), increases the working efficiency of the whole system, and reduces the heating of a hydraulic system. The system can be widely applied in devices of engineering machinery with frequent fluctuation or starting-stopping action actuating mechanisms, industrial vehicles, and the like, such as excavators, loading machines, cranes, forklifts, elevators, and the like.
Description
Technical field
The utility model relates to a kind of energy-recuperation system, particularly relates to a kind of hydraulic actuator and reclaim potential energy or kinetic energy when descending or brake, and energy storage device discharges the energy saving device of the energy that is absorbed when actuator rises or start.The utility model is mainly used in rise and fall and brakes equipments such as comparatively frequent engineering machinery and industrial vehicle with starting, as excavator, loader, hoist, fork truck, elevator etc.
Background technique
At present, be that the power-economizing method and the thinking of object emerges in an endless stream with engineering machinery and industrial vehicle, mainly contain following several:
(1) utilize the energy reclaiming method of accumulator, mainly contain: patent CN1958972A utilizes accumulator directly to absorb and directly discharges gravitational potential energy; Patent CN2076972U utilizes accumulator to pass through the two-way pump/motor indirect gravitational potential energy that discharges of absorption indirectly.
(2) utilize the power-economizing method of motor regenerative braking, mainly contain: CN1830750A utilizes motor to reclaim gravitational potential energy and kinetic energy, and by the regenerative braking function of the motor that links to each other with motor battery is arrived in energy recovery.
(3) utilize the power-economizing method that mixes of motor regenerative braking and accumulator, mainly contain: patent CN101408213A utilizes accumulator directly to absorb and directly releases energy, and utilizes motor that two-way pump/motor is carried out regenerative braking simultaneously.
More than these patents the basic ideas of actuator's energy recovery are provided, but all come with some shortcomings separately, such as patent CN1958972A, when working implement moved down, the potential energy that working implement has changed into pressure and can be stored in the accumulator.When working implement rose, the middle pressure of accumulator can change into mechanical energy fully and mention the working implement work done, and its reason is that in the process that releases energy of accumulator, pressure descends.When its underpressure was moved with the facility that push the work forward, the energy that is stored in the accumulator can not get discharging.Cause energy recovery efficiency low.Patent CN2076972U for another example, its exergonic mode has been done useful improvement: the inlet that the pressure oil of accumulator is acted on oil hydraulic pump plays the power-assisted effect, guaranteed that like this pressure oil in the accumulator can discharge fully, but the mode of its energy recovery is weak: when goods descends, its potential energy is converted into pressure and can reverses by driving pump, and the pressure oil that pump is discharged enters accumulator and reclaimed.The sense of rotation of pump was inconsistent when the deficiency here was energy recovery and discharges, and it is inappropriate with the frequent fork truck that descends that such device is applied to lifting, can cause that the sense of rotation of pump is frequently switched, and causes vibration and noise, reduces its working life.Though utilize the method controllability of motor regenerative braking good since its Conversion of energy experienced can be to mechanical energy again to the transformation of energy link of electric energy from hydraulic pressure, power absorption and release efficiency are lower, and system element quantity is more, control is complicated, cost is higher.
The model utility content
Technical problem to be solved in the utility model provides a kind of energy that can reclaim actuator's release when descending or brake efficiently, improves the whole system working efficiency, reduces the energy-recuperation system of the hydraulic actuator of hydraulic system heating.
In order to solve the problems of the technologies described above, the energy-recuperation system of the hydraulic actuator that the utility model provides, comprise at least one actuator, the accumulator of at least one stored energy, at least one hydraulic power supply and hydrovalve, the inlet of selector valve is connected with described accumulator, an outlet of described selector valve is connected with the inlet of described hydraulic power supply by first oil circuit, and another outlet of described selector valve is connected between described actuator and the described hydrovalve by second oil circuit.
Described selector valve is two or multidigit selector valve.
Described hydraulic power supply is an oil hydraulic pump.
Described actuator is oil hydraulic cylinder or oil hydraulic motor.
Adopt the energy-recuperation system of the hydraulic actuator of technique scheme, its basic functional principle is that when actuator descended or brakes, accumulator directly reclaimed the energy that actuator discharges with the form of hydraulic pressure energy.The energy that native system discharges when descending or braking in actuator changes into hydraulic pressure and can be stored in the accumulator, when actuator rises or start, accumulator discharges the inlet that pressure oil acts on hydraulic power supply, drive unit to hydraulic power supply plays the power-assisted effect, thereby can reduce the input power of pump, reach energy-conservation effect.
The utility model is compared with background technique, has useful effect to be:
1, system is simple, reliable operation, and the Conversion of energy link is few, the reuse efficiency height, energy-saving effect is obvious;
2, energy recovery flexibly and delivery mode, reuse efficiency height, releasing course are convenient to control.
In sum, the utility model be a kind of actuator that can reclaim efficiently at the energy that descends or discharge during braking, improve the whole system working efficiency, reduce the hydraulic system heating and efficiently, reliably, the energy-recuperation system of hydraulic actuator cheaply.Native system can be widely used in have frequent up and down or in the equipments such as the engineering machinery of start-stop action actuating mechanism and industrial vehicle, as machinery such as excavator, loader, hoist, fork truck, elevator or equipment etc.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of native system;
The oil circuit figure that Fig. 2 descends for oil hydraulic cylinder;
The oil circuit figure that Fig. 3 rises for oil hydraulic cylinder;
Fig. 4 is the oil circuit figure of oil hydraulic motor braking;
Fig. 5 is the oil circuit figure of oil hydraulic motor starting;
Fig. 6 is the oil hydraulic cylinder decline oil circuit figure of variation;
Fig. 7 is the oil hydraulic cylinder rising oil circuit figure of variation;
Fig. 8 is the oil circuit figure of the oil hydraulic motor braking of variation;
Fig. 9 is the oil circuit figure of the oil hydraulic motor braking of variation.
Embodiment
Below in conjunction with accompanying drawing, provide details of the present utility model by description to embodiment.
Referring to Fig. 1, the inlet of oil hydraulic pump 1 is connected with fuel tank 10 by one-way valve 2, the outlet of oil hydraulic pump 1 is connected with the inlet of hydrovalve 3, the outlet of hydrovalve 3 is connected with the inlet of oil hydraulic cylinder 4, the inlet of selector valve 6 is connected with accumulator 5, an outlet of selector valve 6 is connected with the inlet of oil hydraulic pump 1 by first oil circuit 7, and another of selector valve 6 exports by second oil circuit 8 and be connected between the outlet of the inlet of oil hydraulic cylinder 4 and hydrovalve 3.
1, actuator is the situation of oil hydraulic cylinder 4
Referring to Fig. 2, when oil hydraulic cylinder 4 and load M thereof descended because of gravity, oil hydraulic cylinder 4 big cavity pressure oil entered accumulator 5 by second oil circuit 8, selector valve 6.Along with the pressure rising of accumulator 5, oil hydraulic cylinder 4 rate of descent reduce, and at this moment, the pressure oil in oil hydraulic cylinder 4 a big chambeies part is by the restriction oil sump tank 10 of hydrovalve 3.
Referring to Fig. 3, when oil hydraulic cylinder 4 rose, the pressure oil of accumulator 5 linked to each other with the inlet of oil hydraulic pump 1 by first oil circuit 7, and accumulator 5 is given oil hydraulic pump 1 power-assisted, and the pressure oil of oil hydraulic pump 1 output enters the big chamber of oil hydraulic cylinder 4 by hydrovalve 3, promotes oil hydraulic cylinder 4 risings.
2, actuator is the situation of oil hydraulic motor 9
Referring to Fig. 4, when the oil hydraulic motor 9 of doing inertia motion is braked, oil hydraulic motor 9 filler openings are by an one-way valve repairing, to accumulator 5 charged pressure oil, along with the pressure rising of accumulator 5, the rotating speed of oil hydraulic motor 9 reduces return opening gradually by second oil circuit 8, selector valve 6, for preventing counter-rotating, when oil hydraulic motor 9 rotating speeds are low, regulate hydrovalve 3, make the restriction oil sump tank 10 of the oil return of oil hydraulic motor 4 by hydrovalve 3.
Referring to Fig. 5, when oil hydraulic motor 9 startings, the pressure oil of accumulator 5 links to each other with the inlet of oil hydraulic pump 1 by first oil circuit 7, and accumulator 5 is given oil hydraulic pump 1 power-assisted, the pressure oil of oil hydraulic pump 1 output enters the filler opening of oil hydraulic motor 9 by hydrovalve 3, promotes oil hydraulic motor 9 revolutions.
Two, modified example of the present utility model such as Fig. 6, Fig. 7, Fig. 8 and shown in Figure 9, its hydraulic schematic diagram is identical with Fig. 1.Be illustrated below in conjunction with the enforcement of accompanying drawing variation:
1, actuator is the situation of oil hydraulic cylinder 4
Referring to Fig. 6, when oil hydraulic cylinder 4 and load M thereof descended because of gravity, oil hydraulic cylinder 4 big cavity pressure oil entered accumulator 5 by oil hydraulic pump 1, first oil circuit 7, selector valve 6.Along with the pressure rising of accumulator 5, oil hydraulic cylinder 4 rate of descent reduce, and at this moment, the pressure oil in oil hydraulic cylinder 4 a big chambeies part is by the restriction oil sump tank 10 of hydrovalve 3.
Referring to Fig. 7, when oil hydraulic cylinder 4 rose, the big chamber promotion oil hydraulic cylinder 4 that the pressure oil interflow that the pressure oil of accumulator 5 is exported by selector valve 6, second oil circuit 8 and oil hydraulic pump 1 enters oil hydraulic cylinder 4 rose.
2, actuator is the situation of oil hydraulic motor 9
Referring to Fig. 8, when the oil hydraulic motor 9 of doing inertia motion is braked, oil hydraulic motor 9 filler openings are by an one-way valve repairing, to accumulator 5 charged pressure oil, along with the pressure rising of accumulator 5, the rotating speed of oil hydraulic motor 9 reduces return opening gradually by oil hydraulic pump 1, first oil circuit 7, selector valve 6, for preventing counter-rotating, when oil hydraulic motor 9 rotating speeds are low, regulate hydrovalve 3, make the restriction oil sump tank 10 of the oil return of oil hydraulic motor 9 by hydrovalve 3.
Referring to Fig. 9, when oil hydraulic motor 9 startings, the pressure oil interflow that the pressure oil of accumulator 5 is exported by selector valve 6, second oil circuit 8 and oil hydraulic pump 1 enters the filler opening of oil hydraulic motor 9, promotes oil hydraulic motor 4 revolutions.
Claims (4)
1. the energy-recuperation system of a hydraulic actuator, comprise at least one actuator, the accumulator of at least one stored energy (5), at least one hydraulic power supply and hydrovalve (3), it is characterized in that: the inlet of selector valve (6) is connected with described accumulator (5), an outlet of described selector valve (6) is connected with the inlet of described hydraulic power supply by first oil circuit (7), and another outlet of described selector valve (6) is connected between described actuator and the described hydrovalve (3) by second oil circuit (8).
2. the energy-recuperation system of hydraulic actuator as claimed in claim 1, it is characterized in that: described selector valve is two or multidigit selector valve (6).
3. the energy-recuperation system of hydraulic actuator as claimed in claim 1 or 2, it is characterized in that: described hydraulic power supply is oil hydraulic pump (1).
4. the energy-recuperation system of hydraulic actuator as claimed in claim 1 or 2, it is characterized in that: described actuator is oil hydraulic cylinder (4) or oil hydraulic motor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202113196U CN201679802U (en) | 2010-06-01 | 2010-06-01 | Energy recovery system of hydraulic actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202113196U CN201679802U (en) | 2010-06-01 | 2010-06-01 | Energy recovery system of hydraulic actuating mechanism |
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| Publication Number | Publication Date |
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| CN201679802U true CN201679802U (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202113196U Expired - Fee Related CN201679802U (en) | 2010-06-01 | 2010-06-01 | Energy recovery system of hydraulic actuating mechanism |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846121A (en) * | 2010-06-01 | 2010-09-29 | 湖南山河智能机械股份有限公司 | Energy recovering system of hydraulic executing mechanism |
| CN102418719A (en) * | 2012-01-05 | 2012-04-18 | 蚌埠市淮海压铸机有限责任公司 | Energy-saving hydraulic station |
| CN102518606A (en) * | 2011-12-12 | 2012-06-27 | 杨双来 | Lifting system and lifting method for crane boom of working machine and working machine |
| CN102583137A (en) * | 2011-01-13 | 2012-07-18 | 杨崇恩 | Gas-liquid kinetic energy driven lifting mechanism for elevator |
| CN102691682A (en) * | 2011-03-21 | 2012-09-26 | 杨双来 | Method and device for potential energy recovery and storage by utilizing deadweight of crane jib |
| CN103587380A (en) * | 2013-11-20 | 2014-02-19 | 山东理工大学 | Device for achieving purification of operation room environment by using hydraulic recycled energy of steering system |
| WO2016082321A1 (en) * | 2014-11-24 | 2016-06-02 | 徐州重型机械有限公司 | Method and system for recovering and utilizing duty energy of crane, and crane |
| US9638217B2 (en) | 2011-03-21 | 2017-05-02 | Shuanglai Yang | Lifting system and lifting method for jib of an operating machine, and an operating machine thereof |
| US10844885B2 (en) | 2016-07-07 | 2020-11-24 | Dana Italia S.R.L. | System for recovering energy from a hydraulic actuator |
-
2010
- 2010-06-01 CN CN2010202113196U patent/CN201679802U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846121A (en) * | 2010-06-01 | 2010-09-29 | 湖南山河智能机械股份有限公司 | Energy recovering system of hydraulic executing mechanism |
| CN102583137B (en) * | 2011-01-13 | 2016-07-06 | 杨崇恩 | Gas-liquid kinetic energy driven lifting mechanism for elevator |
| CN102583137A (en) * | 2011-01-13 | 2012-07-18 | 杨崇恩 | Gas-liquid kinetic energy driven lifting mechanism for elevator |
| CN102691682A (en) * | 2011-03-21 | 2012-09-26 | 杨双来 | Method and device for potential energy recovery and storage by utilizing deadweight of crane jib |
| US9638217B2 (en) | 2011-03-21 | 2017-05-02 | Shuanglai Yang | Lifting system and lifting method for jib of an operating machine, and an operating machine thereof |
| CN102518606A (en) * | 2011-12-12 | 2012-06-27 | 杨双来 | Lifting system and lifting method for crane boom of working machine and working machine |
| CN102518606B (en) * | 2011-12-12 | 2016-01-27 | 杨双来 | For the elevating system of the shear leg of Work machine and elevating method and Work machine |
| CN102518606B8 (en) * | 2011-12-12 | 2017-04-19 | 杨双来 | Lifting system and lifting method for crane boom of working machine and working machine |
| CN102418719B (en) * | 2012-01-05 | 2015-06-17 | 蚌埠市淮海压铸机有限责任公司 | Energy-saving hydraulic station |
| CN102418719A (en) * | 2012-01-05 | 2012-04-18 | 蚌埠市淮海压铸机有限责任公司 | Energy-saving hydraulic station |
| CN103587380A (en) * | 2013-11-20 | 2014-02-19 | 山东理工大学 | Device for achieving purification of operation room environment by using hydraulic recycled energy of steering system |
| WO2016082321A1 (en) * | 2014-11-24 | 2016-06-02 | 徐州重型机械有限公司 | Method and system for recovering and utilizing duty energy of crane, and crane |
| US10359063B2 (en) | 2014-11-24 | 2019-07-23 | Xuzhou Heavy Machinery Co.., Ltd. | Method and system for recovering and utilizing operating energy of crane, and crane |
| US10844885B2 (en) | 2016-07-07 | 2020-11-24 | Dana Italia S.R.L. | System for recovering energy from a hydraulic actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20180601 |