CN103352886B - Hydraulic control valve for energy recovery - Google Patents
Hydraulic control valve for energy recovery Download PDFInfo
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- CN103352886B CN103352886B CN201310270445.7A CN201310270445A CN103352886B CN 103352886 B CN103352886 B CN 103352886B CN 201310270445 A CN201310270445 A CN 201310270445A CN 103352886 B CN103352886 B CN 103352886B
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Abstract
A kind of hydraulic control valve for energy recovery, described guide's logic control part comprises selector valve and signal or valve, described main power unit comprises switch element, sequence valve and safety valve, the Output pressure channel of described selector valve is by signal or valve and the first switch element (21a), second switch unit (21b), 3rd switch element (21c), the hydraulic fluid port III of the 4th switch element (21d) connects, described second switch unit (21b), the hydraulic fluid port I of the 3rd switch element (21c) is connected with reversing arrangement by the 3rd main oil gallery (Rp), described first switch element (21a), 4th switch element (21d) is connected with described outside energy storage apparatus by the 4th main oil gallery (Rx), the pressure input channel of described selector valve and the first main oil gallery (Ra), 3rd main oil gallery (Rp), 4th main oil gallery (Rx) is connected with the second main oil gallery (Rb), described first main oil gallery (Ra), second main oil gallery (Rb) respectively with the first external energy transducer (M1), second external energy transducer (M2) connects, the filler opening of described sequence valve and oil outlet respectively with the 3rd main oil gallery (Rp), second main oil gallery (Rb) connects, described safety valve filler opening and oil outlet are connected with described 4th main oil gallery (Rx) and the first drainback passage (T1) respectively, the present invention can not only reduce energy-accumulating element volume, and the few Hydraulic System Fever of energy heat, energy saving, reduce prime mover discharge.
Description
Technical field
The present invention relates to the hydraulic control valve of engineering machinery and the utilization of agricultural equipment equipment energy regenerating, particularly relate to digger operating device hydraulic control valve for energy recovery.
Background technique
Engineering machinery and agricultural equipment often adopt Fluid-transmission to operate various mechanical part.Such as, excavator is a kind of conventional engineering machinery, and excavator boom often utilizes hydraulic oil to act on oil cylinder and realizes its lifting.Hydraulic jack comprises a cylinder with piston, this piston marks off two rooms in cylinder, the bar be connected with piston is connected on cantilever, and oil cylinder is connected with the main body of excavator, realizes rising and the reduction of support by bar is outwards stretched and retracted in oil cylinder by bar from oil cylinder; During excavator operation, the constant adjustment in position of the equipments such as such as cantilever, dipper, scraper bowl and corresponding oil cylinder, particularly cantilever is often in and rises to an a certain high position from a certain low level, among the cyclic motion process dropping to a certain low level again from an a certain high position, due to cantilever and the effect quality such as dipper, scraper bowl thereon larger, from Conversion of Energy principle, support can only reduce under gravity, if do not provide the resistance of decline, in decline process, easily there is weightlessness.When swing arm is in decline in order to prevent it weightless, solution is in the past, maintenance medium compressing cylinder has certain back pressure, liquid stream reflux line of being for this reason everlasting is provided with throttling arrangement, hydraulic oil is by flowing back to fuel tank after throttling arrangement, and the energy of such cantilever changes into heat energy, has been slatterned in vain, in order to prevent the temperature of hydraulic oil from significantly raising the harm brought system, also need to be provided with sink.Therefore, need to find a kind of effective control gear to realize the recovery and reuse of energy.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of energy saving, reduces the hydraulic control valve for energy recovery of hydraulic oil temperature rise.
A kind of hydraulic control valve for energy recovery, comprises guide's logic control part and main power unit, also comprises outside energy storage apparatus, and described guide's logic control part comprises selector valve and signal or valve, described main power unit comprises switch element, sequence valve and safety valve, the Output pressure channel of described selector valve is by signal or valve and the first switch element 21a, second switch unit 21b, unit switch 21c is connected with the hydraulic fluid port III of the 4th switch element 21d, described second switch unit 21b is connected with reversing arrangement by the 3rd main oil gallery Rp with the hydraulic fluid port I of unit switch 21c, described first switch element 21a is connected with described outside energy storage apparatus by the 4th main oil gallery Rx with the 4th switch element 21d, the pressure input channel of described selector valve and the first main oil gallery Ra, 3rd main oil gallery Rp, 4th main oil gallery Rx is connected with the second main oil gallery Rb, described first main oil gallery Ra and the second main oil gallery Rb are connected with the first external energy transducer M1 and the second external energy transducer M2 respectively, the filler opening of described sequence valve is connected with the 3rd main oil gallery Rp and the second main oil gallery Rb respectively with oil outlet, described safety valve filler opening and oil outlet are connected with described 4th main oil gallery Rx and the first drainback passage T1 respectively.
Described selector valve comprises the first selector valve and the second selector valve, first working hole of described first selector valve and the second selector valve and the hydraulic fluid port III of the 3rd signal or valve 13c connect and compose pressure input channel S10, second working hole of described first selector valve and the second working hole of the second selector valve connect and compose the second drainback passage T2, 3rd working hole of described first selector valve and the hydraulic fluid port I of the 4th signal or valve 13d connect and compose the second Output pressure channel S2, 4th working hole of described first selector valve and the first signal or valve 13a hydraulic fluid port II connect and compose the 6th Output pressure channel S6, 3rd working hole of described second selector valve, the first signal or the hydraulic fluid port I of valve 13a and the hydraulic fluid port II of the 4th signal or valve 13d connect and compose the one the 11 Output pressure channel S11, the hydraulic fluid port I of described secondary signal or valve 13b hydraulic fluid port the III and the 3rd signal or valve 13c connects and composes the 12 pressure input channel S12, the hydraulic fluid port I of described 5th signal or valve 13e and the 4th signal or valve 13d hydraulic fluid port III connect and compose the 9th Output pressure channel S9, described first Output pressure channel S1 is connected with the hydraulic fluid port III of described first signal or valve 13a and the 5th signal or valve 13e respectively with described 7th Output pressure channel S7, described 3rd pressure input channel S3 and the 4th pressure input channel S4 are connected with described secondary signal or valve 13b hydraulic fluid port I and hydraulic fluid port II respectively, and described 5th pressure input channel S5 and the 8th pressure input channel S8 are connected with described 3rd signal or the hydraulic fluid port II of valve 13c and the hydraulic fluid port II of the 5th signal or valve 13e respectively.
Described switch element is separated into epicoele, lumen and cavity of resorption by movable spool, described epicoele is provided with Returnning spring and hydraulic fluid port III, described lumen both sides are provided with hydraulic fluid port II and the hydraulic fluid port IV of normal open, described cavity of resorption is provided with hydraulic fluid port I, described epicoele and other two chamber obstructed, the break-make of described lumen and cavity of resorption is controlled by the actuating pressure of epicoele; The hydraulic fluid port IV of described first switch element 21a is connected with the hydraulic fluid port II of second switch unit 21b and is connected with the first main oil gallery Ra afterwards, be connected with described 4th main oil gallery Rx after described first switch element 21a is connected with the hydraulic fluid port I of the 4th switch element 21d, be connected with described 3rd main oil gallery Rp after described second switch unit 21b is connected with the hydraulic fluid port I of the 3rd switch element 21c, connect in described second main oil gallery Rb after the hydraulic fluid port IV of described 3rd switch element 21c is connected with the hydraulic fluid port II of the 4th switch element 21d.
The command channel of described first selector valve 11 comprises the first command channel Sig1 and the second command channel Sig2, the command channel of described second selector valve 12 comprises the 3rd command channel Sig3, and described first command channel Sig1, the second command channel Sig2 and the 3rd command channel Sig3 are hydraulic pressure and/or electric control.
The beneficial effect that the present invention brings: the present invention is applicable to engineering machinery and agricultural equipment equipment energy regenerating utilizes control, particularly excavator class swing arm energy regenerating utilizes and controls, utilize the present invention the decline pressure oil of transformation of energy of swing arm can be filled with energy-accumulating element, the pressure oil stored can be discharged again, assist to lift arm acting, thus reduce prime mover input power.
In sum, the principle of the invention is simple, it is convenient to control, and reliable performance, when without the need to increasing supercharging device, supercharging mode collection of energy can be realized, can realize again the deep fat cooling in energy-accumulating element, this can not only reduce energy-accumulating element volume, and the few Hydraulic System Fever of energy heat, energy saving, reduces prime mover discharge.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below with reference to the drawings and specific embodiments, the present invention is described in further details:
See Fig. 1, main power unit 2: each first switch element 21a of main power unit, second switch unit 21b, 3rd switch element 21c, 4th switch element 21d is separated into upper, middle and lower three chamber by movable spool, Returnning spring and hydraulic fluid port III is provided with in epicoele, lumen both sides are provided with normal open hydraulic fluid port II, IV, cavity of resorption is provided with hydraulic fluid port I, epicoele and other two chamber obstructed, if spool epicoele active area is A3, pressure is P3, spring force is F, the annular active area of lumen is A2, pressure is P2, cavity of resorption active area is A1, pressure is P1, and have A1+A2=A3, when unit of measurement is unified, when epicoele spool downward active force A3P3+F be less than middle cavity of resorption upwards active force A2P2+A1P1 time, middle loculus is connected, otherwise it is obstructed, the pressure that thus only need control epicoele just can control the break-make in medium and small chamber, sequence valve 22 in main power unit connects the 3rd main oil gallery Rp, the second main oil gallery Rb when inlet pressure exceedes setting value, safety valve 23 in main power unit is mainly used in limiting the oil liquid pressure in energy-accumulating element X.
Guide's logic control part 1: the first signal in guide's logic control part or valve 13a, secondary signal or valve 13b, the 3rd signal or valve 13c, the 4th signal or valve 13d are used for choosing the first main oil gallery Ra, 3rd main oil gallery Rp, the high-voltage signal Psig in the 4th main oil gallery Rx; 5th signal or valve 13e are used for choosing high signal Pbsig in both second main oil gallery Rb, Psig; The first selector valve 11 in guide's logic control part and the second selector valve 12 add release of pressure by instruction and signal Psig to each switch element epicoele and control, thus determine the open close of cavity of resorption in each switch element.
Below the working procedure of hydraulic control valve for energy recovery is set forth.
Common mode:
See Fig. 1, during common mode, external commander sender is without instruction, described first selector valve 11 and the second selector valve 12 are in the left position of meta respectively, second switch unit 21b, the epicoele of the 3rd switch element 21c is respectively by the second pressure input channel S2,6th pressure input channel S6, the second drainback passage T2 release, thus, cavity of resorption can be connected all the time.
Lift operation process: when carrying out lift operation, external reversing arrangement accesses main power unit 2 the 3rd main oil gallery Rp outside oil sources, at this moment pressure signal P sig is divided into two-way, lead up to the tenth pressure input channel S10, 11 pressure input channel S11, first pressure input channel S1 enters the epicoele of the first switch element 21a and cavity of resorption passage in shutdown switch unit, 4th main oil gallery Rx, first main oil gallery Ra can not connect, separately lead up to the tenth pressure input channel S10, 11 pressure input channel S11, 9th pressure input channel S9 is introduced into the 5th signal or valve 13e, carry out signal height with signal Pbsig to compare, high signal is only had just to enter the epicoele of the 4th switch element 21d and cavity of resorption passage in shutdown switch unit by the 7th pressure input channel S7, 4th main oil gallery Rx, second main oil gallery Rb can not lead to, therefore, enter the pressure oil content two-way of the 3rd main oil gallery Rp by two second switch unit 21b, 3rd switch element 21c, two first main oil gallery Ra, the second main oil gallery Rb enters the first external energy transducer M1 respectively and the second external energy transducer M2 carries out lifting operation.
Step-down operation process: when carrying out step-down operation, external reversing arrangement accesses outside drainback passage the 3rd described main oil gallery Rp, the same with lift operation process, first switch element 21a, second switch unit 21d middle cavity of resorption separately can not be connected, oil return in first external energy transducer M1 and the second external energy transducer M2 divides two-way by the first main oil gallery Ra, second main oil gallery Rb, second switch unit 21b, collaborate to flow out from the 3rd main oil gallery Rp after 3rd switch element 21c, for preventing equipment weightless, the necessary throttling of reversing arrangement, the first external energy transducer M1 and the second external energy transducer M2 is allowed to produce certain back pressure, owing to there being the effect of the first external energy transducer M1 and the second external energy transducer M2, back pressure is relatively little.
Without operating process: during inoperation, main power unit 2 each switching element on off operating mode is identical with lifting decline process, at this moment external reversing arrangement cut-off, seal the 3rd described main oil gallery Rp, the first external energy transducer M1 and the second external energy transducer M2 is in lockup state.
Power save mode:
See Fig. 1, lift operation process: when carrying out lift operation, external reversing arrangement is outside oil sources access the 3rd main oil gallery Rp, external commander sender sends instruction, by described first command channel Sig1, 3rd command channel Sig3 allows described first selector valve 11 and the second selector valve 12 change to right position, left position respectively, at this moment pressure signal P sig is by the tenth pressure input channel S10, first pressure input channel S1, 6th pressure input channel S6 enters the first switch element 21a, the epicoele of the 3rd switch element 21c and turn off respective middle cavity of resorption passage, two couples of the 4th main oil gallery Rx, first main oil gallery Ra, 3rd main oil gallery Rp, second main oil gallery Rb all disconnects, outside energy-accumulating element X can not to the first external energy transducer M1 fuel feeding, external oil sources can not to the second external energy transducer M2 fuel feeding, second switch unit 21b epicoele is because of by the second pressure input channel S2, the second drainback passage T2 release and middle cavity of resorption can be connected, the 3rd main oil gallery Rp, and the first main oil gallery Ra is communicated with, and external oil sources can to the first external energy transducer M1 fuel feeding, due to the 9th pressure input channel S9,11 pressure input channel S11 and the second drainback passage T2 connects and release, 4th switch element 21d epicoele is only stressed signal Pbsig effect, switch element cavity of resorption can lead to lumen, otherwise can not, therefore, carry according to outer the pressure size acting on enegrgy converter, the 4th switch element 21d has two kinds of working staties:
1) pressure, as outside energy-accumulating element X is greater than the outer pressure carrying generation, then the pressure oil of outside energy-accumulating element X feeds the second external energy transducer M2 by the 4th main oil gallery Rx, the 4th switch element 21d, the second main oil gallery Rb, at this moment the external oil sources of reversing arrangement and outside energy-accumulating element X is connected to respectively to the first external energy transducer M1 and the second external energy force transducer M2 fuel feeding lifting, do work owing to there being the booster action of outside energy-accumulating element X, the power of required prime mover reduces automatically, and then energy-conservation.
2) pressure, as outside energy-accumulating element X is less than the outer pressure carrying generation, at this moment external oil supply pressure can constantly increase and opening sequence valve 22 until equal the outer pressure that carries, and the epicoele effect of the 4th switch element 21d and the outer equal signal pressure Pbsig of pressure that carries, at this moment the 4th switch element 21d can turn off in cavity of resorption passage, prevent outside energy-accumulating element X oil-filled, thus, the first external energy transducer M1, M2 are all undertaken doing work without energy-conservation lifting by external oil sources fuel feeding.
Step-down operation process: when carrying out step-down operation, external reversing arrangement accesses outside drainback passage the 3rd main oil gallery Rp, external commander sender is by the second command channel Sig2, 3rd command channel Sig3 sends instruction, described first selector valve 11 and the second selector valve 12 is allowed all to change to right position, signal pressure Psig leads up to the tenth pressure input channel S10, second pressure input channel S2 enters the epicoele of second switch unit 21b and cavity of resorption passage in turning off, thus the first main oil gallery Ra, Rp can not be communicated with, pressure oil in first external energy transducer M1 can not lead to the 3rd main oil gallery Rp, separately lead up to the tenth pressure input channel S10, second pressure input channel S2,9th pressure input channel S9 is introduced into the 5th signal or valve 13e, carry out signal height with signal Pbsig to compare, high signal is only had just to introduce the epicoele of the 4th switch element 21d and cavity of resorption passage in shutdown switch unit by the 7th pressure input channel S7, thus the 4th main oil gallery Rx, the second main oil gallery Rb can not be communicated with, first pressure input channel S1, 6th pressure input channel S6, 11 pressure input channel S11 is by the second drainback passage T2 release, cause the first switch element 21a, the epicoele release of the 3rd switch element 21c and cavity of resorption passage in turn on-switch unit, oil return in second external energy transducer M2 is by the second main oil gallery Rb, 3rd main oil gallery Rp, external reversing arrangement flows out, pressure oil in first external energy transducer M1 is by the first main oil gallery Ra, 4th main oil gallery Rx is filled with outside energy-accumulating element X, because external reversing arrangement throttling action is weak, outside energy-accumulating element X is filled with certain air pressure, thus back pressure produces primarily of the first external energy transducer M1, the energy that outside energy-accumulating element X collects is that energy-conservation lifting has prepared condition.
As can be seen from the above, under power save mode, outside energy-accumulating element X and the first external energy transducer M1, M2 automatically realizes main oil gallery and exchanges connection when lifting declines, thus the fluid realized in outside energy-accumulating element X changes cooling, in addition, compared with common mode, when power save mode declines, back pressure improves one times nearly, thus the outside energy-accumulating element X that volume can be selected less, during lifting, recovered energy utilizing status is better.
The foregoing is only the preferred embodiments of the present invention, and do not limit the present invention in any way, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a hydraulic control valve for energy recovery, comprise guide's logic control part (1) and main power unit (2), it is characterized in that: also comprise outside energy storage apparatus, described guide's logic control part (1) comprises selector valve and signal or valve, described main power unit (2) comprises switch element, sequence valve and safety valve, the Output pressure channel of described selector valve is by signal or valve and the first switch element (21a), second switch unit (21b), 3rd switch element (21c) is connected with the hydraulic fluid port III of the 4th switch element (21d), described second switch unit (21b) is connected with reversing arrangement by the 3rd main oil gallery (Rp) with the hydraulic fluid port I of the 3rd switch element (21c), described first switch element (21a) is connected with described outside energy storage apparatus by the 4th main oil gallery (Rx) with the 4th switch element (21d), the pressure input channel of described selector valve and the first main oil gallery (Ra), 3rd main oil gallery (Rp), 4th main oil gallery (Rx) is connected with the second main oil gallery (Rb), described first main oil gallery (Ra) is connected with the first external energy transducer (M1), described second main oil gallery (Rb) is connected with the second external energy transducer (M2), the filler opening of described sequence valve is connected with the 3rd main oil gallery (Rp), the oil outlet of described sequence valve is connected with the second main oil gallery (Rb), described safety valve filler opening is connected with described 4th main oil gallery (Rx), described safety valve oil outlet is connected with the first drainback passage (T1).
2. hydraulic control valve for energy recovery according to claim 1, it is characterized in that: described selector valve comprises the first selector valve (11) and the second selector valve (12), first working hole of described first selector valve (11) and the second selector valve (12) and the hydraulic fluid port III of the 3rd signal or valve (13c) connect and compose the tenth pressure input channel (S10), second working hole of described first selector valve (11) and the second working hole of the second selector valve (12) connect and compose the second drainback passage (T2), 3rd working hole of described first selector valve (11) and the hydraulic fluid port I of the 4th signal or valve (13d) connect and compose the second Output pressure channel (S2), 4th working hole of described first selector valve (11) and the hydraulic fluid port II of the first signal or valve (13a) connect and compose the 6th Output pressure channel (S6), 3rd working hole of described second selector valve (12), the first signal or the hydraulic fluid port I of valve (13a) and the hydraulic fluid port II of the 4th signal or valve (13d) connect and compose the 11 Output pressure channel (S11), the hydraulic fluid port III of secondary signal or valve (13b) and the hydraulic fluid port I of the 3rd signal or valve (13c) connect and compose the 12 pressure input channel (S12), the hydraulic fluid port I of described 5th signal or valve (13e) and the 4th signal or valve (13d) hydraulic fluid port III connect and compose the 9th Output pressure channel (S9), first Output pressure channel (S1) is connected with the hydraulic fluid port III of described first signal or valve (13a) and the 5th signal or valve (13e) respectively with the 7th Output pressure channel (S7), described 3rd pressure input channel (S3) and the 4th pressure input channel (S4) are connected with described secondary signal or valve (13b) hydraulic fluid port I and hydraulic fluid port II respectively, described 5th pressure input channel (S5) and the 8th pressure input channel (S8) are connected with described 3rd signal or the hydraulic fluid port II of valve (13c) and the hydraulic fluid port II of the 5th signal or valve (13e) respectively.
3. hydraulic control valve for energy recovery according to claim 1 and 2, it is characterized in that: described switch element is separated into epicoele, lumen and cavity of resorption by movable spool, described epicoele is provided with Returnning spring and hydraulic fluid port III, described lumen both sides are provided with hydraulic fluid port II and the hydraulic fluid port IV of normal open, described cavity of resorption is provided with hydraulic fluid port I, described epicoele and other two chamber obstructed, the break-make of described lumen and cavity of resorption is controlled by the actuating pressure of epicoele, the hydraulic fluid port IV of described first switch element (21a) is connected with the hydraulic fluid port II of second switch unit (21b) and is connected with the first main oil gallery (Ra) afterwards, be connected with described 4th main oil gallery (Rx) after described first switch element (21a) is connected with the hydraulic fluid port I of the 4th switch element (21d), be connected with described 3rd main oil gallery (Rp) after described second switch unit (21b) is connected with the hydraulic fluid port I of the 3rd switch element (21c), connect in described second main oil gallery (Rb) after the hydraulic fluid port IV of described 3rd switch element (21c) is connected with the hydraulic fluid port II of the 4th switch element (21d).
4. hydraulic control valve for energy recovery according to claim 2, it is characterized in that: the command channel of described first selector valve (11) comprises the first command channel (Sig1) and the second command channel (Sig2), the command channel of described second selector valve (12) comprises the 3rd command channel (Sig3), and described first command channel (Sig1), the second command channel (Sig2) and the 3rd command channel (Sig3) are hydraulic pressure and/or electric control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310270445.7A CN103352886B (en) | 2013-06-28 | 2013-06-28 | Hydraulic control valve for energy recovery |
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| CN201310270445.7A CN103352886B (en) | 2013-06-28 | 2013-06-28 | Hydraulic control valve for energy recovery |
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| CN103352886B true CN103352886B (en) | 2015-12-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110486341B (en) * | 2018-05-14 | 2023-03-21 | 博世力士乐（北京）液压有限公司 | Hydraulic control system and mobile working equipment |
| CN114151391B (en) * | 2021-12-14 | 2022-06-28 | 青州海盾液压机械有限公司 | Energy-saving digital hydraulic system and using method thereof |
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| JP2001341038A (en) * | 2000-06-02 | 2001-12-11 | Kenji Masuda | Electrohydraulic clamp circuit |
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| CN202628688U (en) * | 2012-06-20 | 2012-12-26 | 山河智能装备股份有限公司 | Boarding rotating energy recycling system |
| CN203348201U (en) * | 2013-06-28 | 2013-12-18 | 山河智能装备股份有限公司 | Energy recycling hydraulic control valve |
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| US5077974A (en) * | 1988-02-25 | 1992-01-07 | Kabushiki Kaisha Komatsu Setsakusho | Constant power displacement control cutoff system with adjustable relief valve |
| KR20000012869A (en) * | 1998-08-01 | 2000-03-06 | 김택 | Modulating device for propeller for adhering to crane |
| EP1252449A1 (en) * | 2000-02-04 | 2002-10-30 | O & K ORENSTEIN & KOPPEL AG | Method and device for controlling a lift cylinder, especially of working machines |
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| CN103352886A (en) | 2013-10-16 |
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