CN103352886A - Hydraulic control valve for energy recovery - Google Patents
Hydraulic control valve for energy recovery Download PDFInfo
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- CN103352886A CN103352886A CN 201310270445 CN201310270445A CN103352886A CN 103352886 A CN103352886 A CN 103352886A CN 201310270445 CN201310270445 CN 201310270445 CN 201310270445 A CN201310270445 A CN 201310270445A CN 103352886 A CN103352886 A CN 103352886A
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Abstract
The invention discloses a hydraulic control valve for energy recovery. A forerunner logic control part comprises reversing valves and signal or valves; a main executive component comprises switch units, a sequence valve and a safety valve; pressure output channels of the reversing valves are connected with hydraulic fluid ports III of a switch unit 21a, a switch unit 21b, a switch unit 21c and a switch unit 21 d through the signal or valves, hydraulic fluid ports I of the switch unit 21b and the switch unit 21c are connected with a reversing device through a main oil channel Rp, the switch unit 21a and the switch unit 21 d are connected with an external energy storage device through a main oil channel Rx, pressure input channels of the reversing valves are connected with a main oil channel Ra, the main oil channel Rp, the main oil channel Rx and a main oil channel Rb, the main oil channel Ra and the main oil channel Rb are connected with an external energy converter M1 and an external energy converter M2 respectively, an oil inlet and an oil outlet of the sequence valve are connected with the main oil channel Rp and the main oil channel Rb respectively, and an oil inlet and an oil outlet of the safety valve are connected with the main oil channel Rx and an oil return channel T1 respectively. The hydraulic control valve for energy recovery not only can reduce size of an energy storage component, but also can reduce heat of the hydraulic system, so that the energy is saved, and the prime motor emission is reduced.
Description
Technical field
The present invention relates to the hydraulic control valve that engineering machinery and agricultural equipment equipment energy are recycled, relate in particular to the digger operating device energy and recycle hydraulic control valve.
Background technique
Engineering machinery and agricultural equipment often adopt Fluid-transmission to operate various mechanical parts.For example, excavator is a kind of engineering machinery commonly used, and excavator boom often utilizes hydraulic oil to act on and realizes its lifting on the oil cylinder.Hydraulic jack comprises one with the cylinder of piston, this piston marks off two chambers in cylinder, the bar that links to each other with piston is connected on the cantilever, and oil cylinder links to each other with the main body of excavator, realizes rising and the reduction of support by bar outwards being stretched from oil cylinder and bar being retracted in the oil cylinder; During excavator operation, the constant adjustment in position of equipments such as cantilever, dipper, scraper bowl and corresponding oil cylinder, particularly cantilever often is in from a certain low level and rises to an a certain high position, among dropping to the cyclic motion process of a certain low level from an a certain high position again, because the quality such as cantilever and effect dipper, scraper bowl thereon are larger, from the Conversion of Energy principle, support can only reduce under action of gravitation, if the resistance of decline is not provided, in the decline process, be prone to weightlessness.When swing arm is descending in order to prevent its weightlessness, solution in the past is, the maintenance medium compressing cylinder has certain back pressure, the liquid of for this reason being everlasting flows back to pipeline and is provided with throttling arrangement, hydraulic oil flows back to fuel tank after by throttling arrangement, and the energy of cantilever changes into heat energy like this, has been slatterned in vain, harm for the temperature that prevents hydraulic oil significantly raises system is brought also need 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 provides a kind of energy saving, reduces the energy of hydraulic oil temperature rise and recycles hydraulic control valve.
A kind of energy is recycled hydraulic control valve, comprises guide's logic control part and main power unit, also comprises outside energy storage apparatus, and described guide's logic control partly 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 switch element 21a, switch element 21b, unit switch 21c is connected the hydraulic fluid port III and is connected with switch element 21d, described switch element 21b is connected the hydraulic fluid port I and is connected with reversing arrangement by main oil gallery Rp with unit switch 21c, described switch element 21a is connected main oil gallery Rx and is connected with described outside energy storage apparatus with switch element 21d, the pressure input channel of described selector valve and main oil gallery Ra, main oil gallery Rp, main oil gallery Rx is connected with main oil gallery Rb, described main oil gallery Ra is connected with main oil gallery Rb with external energy transducer M1 and is connected with external energy transducer M2, the filler opening of described sequence valve is connected with oil outlet with main oil gallery Rp and is connected with main oil gallery Rb, and described safety valve filler opening is connected with oil outlet with described main oil gallery Rx and is connected with drainback passage T1.
Described selector valve comprises the first selector valve and the second selector valve, the hydraulic fluid port III of the first working hole of described the first selector valve and the second selector valve and signal or valve 13c connects and composes pressure input channel S10, the second working hole of described the first selector valve and the second working hole of the second selector valve connect and compose drainback passage T2, the hydraulic fluid port I of the 3rd working hole of described the first selector valve and signal or valve 13d connects and composes Output pressure channel S2, and the 4th working hole of described the first selector valve and signal or valve 13a hydraulic fluid port II connect and compose Output pressure channel S6; The hydraulic fluid port II of the hydraulic fluid port I of the 3rd working hole of described the second selector valve, signal or valve 13a and signal or valve 13d connects and composes Output pressure channel S11; The hydraulic fluid port I of described signal or valve 13b hydraulic fluid port III and signal or valve 13c connects and composes pressure input channel S12; The hydraulic fluid port I of described signal or valve 13e and signal or valve 13d hydraulic fluid port III connect and compose Output pressure channel S9; Described Output pressure channel S1 and described Output pressure channel S7 are connected the hydraulic fluid port III of valve 13e with described signal or valve 13a respectively and are connected with signal, described pressure input channel S3 is connected with the hydraulic fluid port II with described signal or valve 13b hydraulic fluid port I respectively with pressure input channel S4, and described pressure input channel S5 and pressure input channel S8 are connected the hydraulic fluid port II of valve 13e with the hydraulic fluid port II of described signal or valve 13c respectively and are connected with signal.
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 the hydraulic fluid port I, described epicoele and other two chamber are obstructed, and the break-make of described lumen and cavity of resorption is controlled by the actuating pressure of epicoele; After being connected with the hydraulic fluid port II of switch element 21b, the hydraulic fluid port IV of described switch element 21a is connected with main oil gallery Ra, described switch element 21a is connected with switch element 21d and is connected with described main oil gallery Rx after the hydraulic fluid port I connects, described switch element 21b is connected with switch element 21c and is connected with described main oil gallery Rp after the hydraulic fluid port I connects, and the hydraulic fluid port IV of described switch element 21c is connected the hydraulic fluid port II and is connected rear in described main oil gallery Rb connection with switch element 21d.
The command channel of described the first selector valve 11 comprises command channel Sig1 and command channel Sig2, and the command channel of described the second selector valve 12 comprises command channel Sig3, described command channel Sig1, and Sig2, 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 is recycled control, particularly excavator class swing arm energy is recycled control, utilize the present invention to be filled with energy-accumulating element to the swing arm pressure oil that transformation of energy forms that descends, can discharge the pressure oil that stores again, assist to lift the arm acting, thereby reduce prime mover input power.
In sum, the principle of the invention is simple, control is convenient, and reliable performance is in the situation that need not to increase supercharging device, can realize the supercharging mode collection of energy, can realize again the deep fat cooling in the energy-accumulating element, this can not only reduce the energy-accumulating element volume, and can heat lack Hydraulic System Fever, energy saving reduces prime mover discharging.
Description of drawings
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:
Referring to Fig. 1, main power unit 2: each switch element 21a of main power unit, 21b, 21c, 21d is separated into upper, middle and lower three chambeies by movable spool, is provided with Returnning spring and hydraulic fluid port III in the epicoele, the lumen both sides are provided with normal open hydraulic fluid port II, IV, cavity of resorption is provided with the hydraulic fluid port I, and epicoele and other two chamber are obstructed, and establishing spool epicoele active area is A3, pressure is P3, spring force is F, and the annular active area of lumen is A2, and pressure is P2, the cavity of resorption active area is A1, pressure is P1, and A1+A2=A3 is arranged, in the situation that unit of measurement is unified, when the downward active force A3P3+F of epicoele spool makes progress active force A2P2+A1P1 less than middle cavity of resorption, middle loculus is connected, otherwise obstructed, thereby the pressure that only need control epicoele just can be controlled the break-make in medium and small chamber; Sequence valve 22 in the main power unit is to connect main oil gallery Rp, Rb when inlet pressure surpasses setting value; Safety valve 23 in the main power unit is mainly used in limiting the oil liquid pressure in the energy-accumulating element X.
Guide's logic control part 1: signal or valve 13a in guide's logic control part, 13b, 13c, 13d are used for choosing main oil gallery Ra, Rp, the high-voltage signal Psig among the Rx; Signal or valve 13e are used for choosing both high signal Pbsig of main oil gallery Rb, Psig; The first selector valve 11 in the guide's logic control part and the second selector valve 12 add release of pressure control by instruction and signal Psig to each switch element epicoele, thereby determine the open close of cavity of resorption in each switch element.
The below sets forth the working procedure that energy is recycled hydraulic control valve.
Common mode:
Referring to Fig. 1, external commander sender is without instruction during common mode, and described the first selector valve 11 and the second selector valve 12 are in respectively the left position of meta, switch element 21b, the epicoele of 21c respectively passes through channel S2, S6, drainback passage T2 release, thereby middle 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 main oil gallery Rp to outside oil sources, at this moment pressure signal P sig is divided into two-way, lead up to channel S10, S11, S1 enters the epicoele of switch element 21a and cavity of resorption passage in the stopcock unit, main oil gallery Rx, Ra can not connect, and another road is by channel S10, S11, S9 is introduced into signal or valve 13e, carries out signal with signal Pbsig and just compares, and only has high signal to enter the epicoele of switch element 21d and cavity of resorption passage in the stopcock unit by channel S7, main oil gallery Rx, Rb can not lead to; Therefore, enter the pressure oil content two-way of main oil gallery Rp by two switch element 21b, 21c, two main oil gallery Ra, Rb enters respectively enegrgy converter M1, and M2 carries out the lifting operation.
Step-down operation process: when carrying out step-down operation, external reversing arrangement accesses outside drainback passage to described main oil gallery Rp, the same with the lift operation process, switch element 21a, 21d middle cavity of resorption separately can not be connected, oil return in the two enegrgy converter M1, M2 divides two-way to pass through two main oil gallery Ra, Rb, two switch element 21b, flow out from main oil gallery Rp interflow behind the 21c, weightless for preventing equipment, reversing arrangement must throttling, allows enegrgy converter M1, M2 produces certain back pressure, because dual energy transducer M1, the effect of M2, back pressure less being arranged.
Without operating process: during inoperation, main power unit 2 each switching element on off operating mode are identical with lifting decline process, and at this moment external reversing arrangement cut-off seals described main oil gallery Rp, enegrgy converter M1, and M2 is in lockup state.
Power save mode:
Referring to Fig. 1, lift operation process: when carrying out lift operation, external reversing arrangement is outside oil sources access main oil gallery Rp, external commander sender sends instruction, by described command channel Sig1, Sig3 allows respectively described the first selector valve 11 and the second selector valve 12 change to right position, left position, at this moment pressure signal P sig is by channel S10, S1, S6 enters switch element 21a, the epicoele of 21c and turn-off separately middle cavity of resorption passage, two couples of main oil gallery Rx, Ra, Rp, Rb all disconnects, and outside energy-accumulating element X can not be to enegrgy converter M1 fuel feeding, and external oil sources can not be to enegrgy converter M2 fuel feeding; Switch element 21b epicoele be because can connecting by channel S2, the middle cavity of resorption of drainback passage T2 release, main oil gallery Rp, and Ra is communicated with, and external oil sources can be to enegrgy converter M1 fuel feeding; Because channel S9, S11 release with drainback passage T2 connection, the signal Pbsig effect that only is stressed of switch element 21d epicoele, the switch element cavity of resorption can lead to lumen, otherwise can not, therefore, according to the outer pressure size that acts on enegrgy converter of carrying, switch element 21d has two kinds of working staties:
1), such as the pressure of outside energy-accumulating element X greater than the outer pressure that produces that carries, then the pressure oil of outside energy-accumulating element X feeds enegrgy converter M2 by main oil gallery Rx, switch element 21d, main oil gallery Rb, at this moment be connected to the external oil sources of reversing arrangement and outside energy-accumulating element X respectively to two enegrgy converter M1, the lifting of M2 fuel feeding, because the booster action acting of outside energy-accumulating element X being arranged, the power of required prime mover reduces automatically, and then energy-conservation.
2), such as the pressure of outside energy-accumulating element X less than the outer pressure that produces that carries, at this moment external oil supply pressure can constantly increase and opening sequence valve 22 until equal the outer pressure that carries, and the signal pressure Pbsig that equates with outer year pressure in the epicoele effect of switch element 21d, at this moment cavity of resorption passage during switch element 21d can turn-off, prevent that outside energy-accumulating element X is oil-filled, thereby enegrgy converter M1, M2 are all undertaken without energy-conservation lifting acting by external oil sources fuel feeding.
Step-down operation process: when carrying out step-down operation, external reversing arrangement accesses outside drainback passage to main oil gallery Rp, external commander sender sends instruction by command channel Sig2, Sig3, allow described the first selector valve 11 and the second selector valve 12 all change to right position, signal pressure Psig is leaded up to channel S10, and S2 enters the epicoele of switch element 21b and cavity of resorption passage in turn-offing, thereby main oil gallery Ra, Rp can not be communicated with, and the pressure oil in the enegrgy converter M1 can not lead to main oil gallery Rp; Another road is by channel S10, and S2, S9 are introduced into signal or valve 13e, carrying out signal with signal Pbsig just compares, only have high signal to introduce the epicoele of switch element 21d and cavity of resorption passage in the stopcock unit by channel S7, thereby main oil gallery Rx, Rb can not be communicated with; Channel S1, S6, S11 is by drainback passage T2 release, cause switch element 21a, the epicoele release of 21c and cavity of resorption passage in the turn on-switch unit, oil return in the enegrgy converter M2 is by main oil gallery Rb, Rp, external reversing arrangement flow out, pressure oil in the enegrgy converter M1 is by main oil gallery Ra, Rx is filled with outside energy-accumulating element X, because a little less than the external reversing arrangement throttling action, outside energy-accumulating element X is filled with certain air pressure, thereby back pressure mainly produces by enegrgy converter M1, and the energy that outside energy-accumulating element X collects is that condition has been prepared in energy-conservation lifting.
As can be seen from the above, under power save mode, outside energy-accumulating element X and enegrgy converter M1, M2 is automatic when lifting descends to realize main oil gallery exchange connection, thereby realizes the fluid replacing cooling in the outside energy-accumulating element X, in addition, compare with common mode, back pressure improved one times nearly when power save mode descended, thereby can select the less outside energy-accumulating element X of volume, and recovered energy utilizes better effects if during lifting.
The above is the preferred embodiments of the present invention only, and does not limit the present invention in any way, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. an energy is recycled hydraulic control valve, comprises guide's logic control part (1) and main power unit (2), and 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 switch element (21a), switch element (21b), unit switch (21c) is connected 21d with switch element) hydraulic fluid port (III) connect, described switch element (21b) is connected 21c with unit switch) hydraulic fluid port (I) be connected with reversing arrangement by main oil gallery (Rp), described switch element (21a) is connected 21d with switch element) be connected with described outside energy storage apparatus by main oil gallery (Rx), the pressure input channel of described selector valve and main oil gallery (Ra), main oil gallery (Rp), main oil gallery (Rx) is connected Rb with main oil gallery) connect, described main oil gallery (Ra) is connected Rb with main oil gallery) be connected M2 with the external energy transducer with external energy transducer (M1) respectively) be connected, the filler opening of described sequence valve be connected with oil outlet with main oil gallery (Rp) be connected Rb with main oil gallery) be connected, described safety valve filler opening be connected with oil outlet with described main oil gallery (Rx) be connected T1 with drainback passage) be connected.
2. energy according to claim 1 is recycled hydraulic control valve, it is characterized in that: described selector valve comprises the first selector valve (11) and the second selector valve (12), the hydraulic fluid port (III) of the first working hole of described the first selector valve (11) and the second selector valve (12) and signal or valve (13c) connects and composes pressure input channel (S10), the second working hole of the second working hole of described the first selector valve (11) and the second selector valve (12) connects and composes drainback passage (T2), the hydraulic fluid port (I) of the 3rd working hole of described the first selector valve (11) and signal or valve (13d) connects and composes Output pressure channel (S2), and the 4th working hole of described the first selector valve (11) and signal or valve (13a) hydraulic fluid port (II) connect and compose Output pressure channel (S6); The hydraulic fluid port (II) of the hydraulic fluid port (I) of the 3rd working hole, signal or the valve (13a) of described the second selector valve (12) and signal or valve (13d) connects and composes Output pressure channel (S11); The hydraulic fluid port (I) of described signal or valve (13b) hydraulic fluid port (III) and signal or valve (13c) connects and composes pressure input channel (S12); The hydraulic fluid port (I) of described signal or valve (13e) and signal or valve (13d) hydraulic fluid port (III) connect and compose Output pressure channel (S9); Described Output pressure channel (S1) and described Output pressure channel (S7) are connected the hydraulic fluid port (III) of valve (13e) with described signal or valve (13a) respectively and are connected with signal, described pressure input channel (S3) and pressure input channel (S4) are connected II with described signal or valve (13b) hydraulic fluid port (I) respectively with hydraulic fluid port) be connected, described pressure input channel (S5) and pressure input channel (S8) are connected the hydraulic fluid port (II) of valve (13e) with the hydraulic fluid port (II) of described signal or valve (13c) respectively and are connected with signal.
3. energy according to claim 1 and 2 is recycled hydraulic control valve, 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 are obstructed, and the break-make of described lumen and cavity of resorption is controlled by the actuating pressure of epicoele; After being connected with the hydraulic fluid port (II) of switch element (21b), the hydraulic fluid port (IV) of described switch element (21a) is connected with main oil gallery (Ra), described switch element (21a) is connected 21d with switch element) hydraulic fluid port (I) be connected with described main oil gallery (Rx) after connecting, described switch element (21b) is connected 21c with switch element) hydraulic fluid port (I) is connected with described main oil gallery (Rp) after connecting, the hydraulic fluid port (IV) of described switch element (21c) is connected 21d with switch element) hydraulic fluid port (II) connection connect in described main oil gallery (Rb) afterwards.
4. energy according to claim 2 is recycled hydraulic control valve, it is characterized in that: the command channel of described the first selector valve (11) comprises command channel (Sig1) and command channel (Sig2), the command channel of described the second selector valve (12) comprises command channel (Sig3), described command channel (Sig1, Sig2, Sig3) be hydraulic pressure and/or electric control.
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486341A (en) * | 2018-05-14 | 2019-11-22 | 博世力士乐（北京）液压有限公司 | Hydraulic control system and mobile working equipment |
| CN114151391A (en) * | 2021-12-14 | 2022-03-08 | 青州海盾液压机械有限公司 | Energy-saving digital hydraulic system and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01220706A (en) * | 1988-02-25 | 1989-09-04 | Komatsu Ltd | Hydraulic control device for hydraulic excavator |
| KR100276424B1 (en) * | 1998-08-01 | 2000-12-15 | 김택 | Modulating device of a pile driver attached to a crane |
| DE10004905C2 (en) * | 2000-02-04 | 2002-10-24 | Orenstein & Koppel Ag | Method and device for controlling a lifting cylinder, in particular of working machines |
| JP2001341038A (en) * | 2000-06-02 | 2001-12-11 | Kenji Masuda | Electrohydraulic clamp circuit |
| JP4232784B2 (en) * | 2006-01-20 | 2009-03-04 | コベルコ建機株式会社 | Hydraulic control device for work machine |
| CN102296663B (en) * | 2011-05-21 | 2013-03-13 | 山河智能装备股份有限公司 | Hydraulic system for recovering potential energy |
| CN102678690B (en) * | 2012-05-22 | 2015-05-20 | 山河智能装备股份有限公司 | Potential energy recycling hydraulic system of working device |
| 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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- 2013-06-28 CN CN201310270445.7A patent/CN103352886B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486341A (en) * | 2018-05-14 | 2019-11-22 | 博世力士乐（北京）液压有限公司 | Hydraulic control system and mobile working equipment |
| CN114151391A (en) * | 2021-12-14 | 2022-03-08 | 青州海盾液压机械有限公司 | Energy-saving digital hydraulic system and use method thereof |
| 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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