CN203335537U - Energy recycling hydraulic system of working device - Google Patents
Energy recycling hydraulic system of working device Download PDFInfo
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- CN203335537U CN203335537U CN2013202868274U CN201320286827U CN203335537U CN 203335537 U CN203335537 U CN 203335537U CN 2013202868274 U CN2013202868274 U CN 2013202868274U CN 201320286827 U CN201320286827 U CN 201320286827U CN 203335537 U CN203335537 U CN 203335537U
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Abstract
The utility model discloses an energy recycling hydraulic system of a working device. The energy recycling hydraulic system of the working device comprises energy converters, a switching valve, an energy collector, a logic control component, a main valve, a movable arm device and corresponding connecting parts. When the energy recycling hydraulic system of the working device is used, the energy recycling hydraulic system of the working device can convert descending energy of the movable arm device into hydraulic energy in a controllable mode, the hydraulic energy is stored in the energy collector, and the energy recycling hydraulic system of the working device can further carry out direct recycling on the descending energy, and carry out balanced work on the movable arm device, so that heat emission of the energy recycling hydraulic system of the working device is reduced, the input power of a prime mover is reduced, and the purpose of energy saving is achieved.
Description
Technical field
The utility model relates to a kind of hydraulic system that can be controlled the flow of fluid of enegrgy converter, the mechanical assembly of this enegrgy converter on can mobile apparatus, relate in particular to from enegrgy converter recovered energy and utilize subsequently the energy that reclaims to provide the device of a determined power for operation.
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 oil cylinder and realizes its lifting.Hydraulic jack comprises a cylinder with piston, this piston marks off two chambers in cylinder, the bar be connected with piston is connected on cantilever, and oil cylinder is connected with the main body of excavator, by bar outwards being stretched from oil cylinder and bar being realized to rising and the reduction of support towards retracting in oil cylinder; During excavator operation, the constant adjustment in position of equipments such as cantilever, dipper, scraper bowl and corresponding oil cylinder, particularly cantilever is often in rising to an a certain high position from a certain low level, 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 dipper thereon of effect, scraper bowl are larger, from the Conversion of Energy principle, support can only reduce under the effect of gravity, 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 to be provided with sink.Therefore, need to find a kind of effective technology to realize the recovery and reuse of energy in hydraulic system.
The model utility content
The technical problems to be solved in the utility model is to provide a kind of energy saving, reduces the equipment energy of the temperature rise of hydraulic system hydraulic oil and recycles hydraulic system.
In order to address the above problem, the equipment energy that the utility model adopts is recycled hydraulic system, comprise at least respectively and comprise (1.1, 1.2) two groups of enegrgy converters of unit, main valve, the first control signal (Signal-a) and the second control signal (Signal-b), described main valve is leaded up to switching valve and described enegrgy converter unit (1.1, 1.2) the oil pocket that goes out connect, another road directly with described enegrgy converter unit (1.1, 1.2) oil suction chamber connect, described switching valve is connected with energy harvester (4), the input end of logic control unit and described main valve, enegrgy converter unit (1.1, 1.2), the first control signal (Signal-a) and the second control signal (Signal-b) communication connection, the output terminal of described logic control unit is connected with the control end of described switching valve.
Every group of described two groups of enegrgy converter at least comprise respectively one or more (1.1,1.2) converter unit, there is respectively corresponding active chamber (1.1b, 1.1c, 1.2b, 1.2c) each unit, described active chamber (1.1b, 1.2b) is respectively equipped with logical hydraulic fluid port (B1, B2) and directly is connected with described main valve hydraulic fluid port (B), and described active chamber (1.1c, 1.2c) is respectively equipped with logical hydraulic fluid port (A1, A2); Described switching valve comprises: the first main hydraulic fluid port (P1), the second main hydraulic fluid port (P2), the 3rd main hydraulic fluid port (A), the 4th main hydraulic fluid port (B) and first are controlled mouthful (Ka4), second and are controlled mouthful (Kb4), the first main hydraulic fluid port (P1), the second main hydraulic fluid port (P2) are connected with main valve hydraulic fluid port (A), energy harvester hydraulic fluid port (X) respectively, and the first main hydraulic fluid port (A), the second main hydraulic fluid port (B) are connected with the logical hydraulic fluid port (A1, A2) of described active chamber (1.1c, 1.2c) respectively; The input output of described logic control unit (5) connect and comprise: input (Ka2) is connected in described main valve and inputs first tie point (S1) of the first control signal (Signal-a) and locate, input (Kb2) is connected in described main valve and inputs second tie point (S2) of the second control signal (Signal-b) and locate, output (Pp1) connects first of described switching valve (3) and controls mouthful (Ka4), and output (Pp2) connects second of described switching valve (3) and controls mouthful (Kb4).
Preferably, described logic control unit is hydraulic logical control parts, electric logic control unit or electric liquid logic control unit.
Preferably, described the first control signal (Signal-a) and the second control signal (Signal-b) are hydraulic pressure signal and/or electrical signal, are taken from directly or indirectly operating grip.、
Preferably, described two groups of enegrgy converter unit are hydraulic jack and/or oil hydraulic motor.
The beneficial effect that the utility model brings: the utility model is applicable to excavator class swing arm energy and recycles, when swing arm descends, the energy of swing arm is filled with to energy harvester by corresponding control, when excavator discharges directly acting to the fluid stored by controlling switching valve when being lifted arm power consumption operation, reduce prime mover input power.This model utility principle is simple, and it is convenient to control, and reliable performance can realize that the deep fat exchange in energy harvester is cooling automatically, and this can not only reduce Hydraulic System Fever, energy saving, and can reduce prime mover discharge.
The accompanying drawing explanation
Fig. 1 is embodiment 1 structural representation.
Fig. 2 is embodiment 2 structural representation.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details.
Referring to Fig. 1 and Fig. 2, a kind of equipment energy is recycled hydraulic system, comprise at least respectively and comprise (1.1, 1.2) two groups of enegrgy converters of unit, main valve 6, the first control signal (Signal-a) and the second control signal (Signal-b), main valve 6 is leaded up to switching valve 3 and enegrgy converter unit (1.1, 1.2) the oil pocket that goes out connect, another road directly and enegrgy converter unit (1.1, 1.2) oil suction chamber connect, switching valve 3 is connected with energy harvester (4), the input end of logic control unit 5 and main valve 6, enegrgy converter unit (1.1, 1.2), the first control signal (Signal-a) and the second control signal (Signal-b) communication connection, the output terminal of logic control unit 5 is connected with the control end of switching valve 3.
Every group of two groups of enegrgy converter at least comprises respectively one or more (1.1,1.2) converter unit, each unit is separated into corresponding active chamber (1.1b, 1.1c, 1.2b, 1.2c) by piston with rod (1.1a, 1.2a) respectively, active chamber (1.1b, 1.2b) is respectively equipped with logical hydraulic fluid port (B1, B2) and directly is connected with main valve hydraulic fluid port (B), and active chamber (1.1c, 1.2c) is respectively equipped with logical hydraulic fluid port (A1, A2); Switching valve (3) comprising: the first main hydraulic fluid port (P1), the second main hydraulic fluid port (P2), the 3rd main hydraulic fluid port (A), the 4th main hydraulic fluid port (B) and first are controlled mouthful (Ka4), second and are controlled mouthful (Kb4), the first main hydraulic fluid port (P1), the second main hydraulic fluid port (P2) are connected with main valve hydraulic fluid port (A), energy harvester hydraulic fluid port (X) respectively, and the first main hydraulic fluid port (A), the second main hydraulic fluid port (B) are connected with the logical hydraulic fluid port (A1, A2) of active chamber (1.1c, 1.2c) respectively; The input output of logic control unit (5) connect and comprise: input (Ka2) is connected in described main valve and inputs first tie point (S1) of the first control signal (Signal-a) and locate, input (Kb2) is connected in described main valve and inputs second tie point (S2) of the second control signal (Signal-b) and locate, output (Pp1) connects first of described switching valve (3) and controls mouthful (Ka4), and output (Pp2) connects second of switching valve (3) and controls mouthful (Kb4).
The first control signal (Signal-a) and the second control signal (Signal-b) are hydraulic pressure signal and/or electrical signal, are taken from directly or indirectly operating grip.、
Described two groups of enegrgy converter unit are hydraulic jack and/or oil hydraulic motor.
Referring to Fig. 1 and Fig. 2, enegrgy converter unit (1.1), (1.2): when two active chambers (1.1c), (1.2c) of enegrgy converter unit (1.1), (1.2) pass into another two active chambers of pressure oil (1.1b), (1.2b) while taking back fuel tank, described enegrgy converter unit (1.1), (1.2) are by piston with rod (1.1a), the described pantograph of (1.2a) synchronous lifting (BOOM), and now input hydraulic pressure can be converted into pantograph (BOOM) energy; When two active chambers (1.1b), (1.2b) of described enegrgy converter unit (1.1), (1.2) pass into another two active chambers of pressure oil (1.1c), (1.2c) while picking out, described pantograph (BOOM) drives synchronous decline of piston with rod (1.1a), (1.2a) of described enegrgy converter unit (1.1), (1.2), and now pantograph (BOOM) Conversion of Energy is hydraulic energy.
Switching valve 3: by acting on the signal of controlling mouthful (Ka4), (Kb4), carrying out corresponding control, can realize following effect: 1) by alternately connecting main valve hydraulic fluid port (A), energy harvester hydraulic fluid port (X) oil circuit to enegrgy converter (1.1c), (1.2c) two Room, not only reach the purpose of Collection and use energy but also can realize that the exchange of energy harvester deep fat is cooling; 2), when carrying out the pantograph step-down operation, owing to only collecting one group of enegrgy converter energy wherein, another group enegrgy converter back pressure can be very little, therefore can realize the pressurization energy collection.
Energy harvester 4: both can collect the energy that pantograph (BOOM) descends, power is provided while can be again pantograph (BOOM) lifting.
Logic control unit 5: the first control signal (Signal-a), the second control signal (Signal-b) to access are controlled, to determine whether that the first control signal (Signal-a), the second control signal (Signal-b) are passed into to switching valve controls mouthful (Ka4), (Kb4), to the switching valve control that commutates.
Referring to Fig. 1, the lift operation process: the defeated signal of operating grip makes the first control signal (Signal-a) effective, described main valve changes to left position under the effect of the first control signal (Signal-a), the pressure oil of main valve P oil circuit can pass into main valve A mouth, the oil return of main valve B mouth can pass into main valve oil circuit T, described logic control unit is introduced switching valve to the first control signal (Signal-a) and is controlled mouthful (Ka4) and make switching valve change to left position, the pressure that now main valve comes is by main valve A mouth, switching valve P1 mouth and B mouth, enegrgy converter A2 mouth enters enegrgy converter active chamber (1.2c), meanwhile, the pressure oil of energy harvester is by the X mouth, switching valve P2 mouth and A mouth, enegrgy converter A1 mouth enters enegrgy converter active chamber (1.1c), this moment, enegrgy converter active chamber (1.1b, 1.2b) oil return can pass through main valve B mouth, main valve oil circuit T flows back to fuel tank, thereby, the pressure oil effect that enegrgy converter comes by energy harvester and main valve is to pantograph (BOOM) lifting of being done work, due to the booster action acting that energy harvester is arranged, the power of required prime mover reduces automatically.
The step-down operation process: the defeated signal of operating grip makes the second control signal (Signal-b) effective, described main valve changes to right position under the effect of the second control signal (Signal-b), the pressure oil of main valve P oil circuit can pass into the B mouth, the oil return of A mouth can pass into oil circuit T, at this, described switching valve has two kinds of working staties:
1), as as described in main valve B mouth pressure (being determined by load) do not reach as described in the logic control unit setting value, logic control unit is introduced the second control signal (Signal-b) switching valve control mouthful (Kb4) and is made switching valve change to right position, the pressure oil that now main valve comes enters enegrgy converter active chamber (1.1b) (1.2b) by main valve B mouth, the fluid of enegrgy converter unit (1.1) active chamber (1.1c) enters energy harvester by switching valve A mouth and P2 mouth, the fluid of enegrgy converter unit (1.2) active chamber (1.2c) is by switching valve A mouth and P1 mouth, main valve A mouth and oil circuit T flow back to fuel tank, because main valve A mouth back pressure is little, pantograph (BOOM) decline back pressure is mainly produced by energy harvester, with routine decline mode, compare, energy-conservation lower back pressure nearly doubles, thereby the energy that pantograph (BOOM) descends mainly deposits energy harvester in the mode of supercharging.
2), as as described in main valve B mouth pressure (being determined by load) meet or exceed as described in the logic control unit setting value, logic control unit is controlled mouthful (Kb4) no signal effect by switching valve, described switching valve does not commutate and is operated in meta, the pressure oil that now main valve comes enters enegrgy converter active chamber (1.1b) (1.2b) by main valve B mouth, enegrgy converter active chamber (1.1c), (1.2c) fluid after the A mouth by switching valve and B mouth again from switching valve P1 mouth, main valve A enters main valve oil circuit T and flows back to fuel tank, pantograph (BOOM) can carry out the conventional step-down operation without accumulation of energy.
Without power-save operation process or inoperation process: without power-save operation process or inoperation process, described logic control unit 5 can not introduced described switching valve to the first control signal (Signal-a), the second control signal (Signal-b) control number and control mouthful (Ka4), (Kb4), and switching valve does not commutate and is operated in meta.
The foregoing is only preferred embodiment of the present utility model, and limit never in any form the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. an equipment energy is recycled hydraulic system, comprise at least respectively and comprise (1.1, 1.2) two groups of enegrgy converters of unit, main valve (6), the first control signal (Signal-a) and the second control signal (Signal-b), it is characterized in that: described main valve (6) is leaded up to switching valve (3) and described enegrgy converter unit (1.1, 1.2) the oil pocket that goes out connect, another road directly with described enegrgy converter unit (1.1, 1.2) oil suction chamber connect, described switching valve (3) is connected with energy harvester (4), the input end of logic control unit (5) and described main valve (6), enegrgy converter unit (1.1, 1.2), the first control signal (Signal-a) and the second control signal (Signal-b) communication connection, the output terminal of described logic control unit (5) is connected with the control end of described switching valve (3).
2. equipment energy according to claim 1 is recycled hydraulic system, it is characterized in that: every group of described two groups of enegrgy converter at least comprise respectively one or more (1.1,1.2) converter unit, there is respectively corresponding active chamber (1.1b, 1.1c, 1.2b, 1.2c) each unit, described active chamber (1.1b, 1.2b) is respectively equipped with logical hydraulic fluid port (B1, B2) and directly is connected with described main valve hydraulic fluid port (B), and described active chamber (1.1c, 1.2c) is respectively equipped with logical hydraulic fluid port (A1, A2); Described switching valve (3) comprising: the first main hydraulic fluid port (P1), the second main hydraulic fluid port (P2), the 3rd main hydraulic fluid port (A), the 4th main hydraulic fluid port (B) and first are controlled mouthful (Ka4), second and are controlled mouthful (Kb4), the first main hydraulic fluid port (P1), the second main hydraulic fluid port (P2) are connected with main valve hydraulic fluid port (A), energy harvester hydraulic fluid port (X) respectively, and the first main hydraulic fluid port (A), the second main hydraulic fluid port (B) are connected with the logical hydraulic fluid port (A1, A2) of described active chamber (1.1c, 1.2c) respectively; The input output of described logic control unit (5) connect and comprise: input (Ka2) is connected in described main valve and inputs first tie point (S1) of the first control signal (Signal-a) and locate, input (Kb2) is connected in described main valve and inputs second tie point (S2) of the second control signal (Signal-b) and locate, output (Pp1) connects first of described switching valve (3) and controls mouthful (Ka4), and output (Pp2) connects second of described switching valve (3) and controls mouthful (Kb4).
3. equipment energy according to claim 1 and 2 is recycled hydraulic system, and it is characterized in that: described logic control unit (5) is hydraulic logical control parts, electric logic control unit or electric liquid logic control unit.
4. equipment energy according to claim 1 and 2 is recycled hydraulic system, it is characterized in that: described the first control signal (Signal-a) and the second control signal (Signal-b) are hydraulic pressure signal and/or electrical signal, are taken from directly or indirectly operating grip.
5. equipment energy according to claim 1 and 2 is recycled hydraulic system, and it is characterized in that: described two groups of enegrgy converter unit are hydraulic jack and/or oil hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013202868274U CN203335537U (en) | 2013-05-23 | 2013-05-23 | Energy recycling hydraulic system of working device |
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| CN2013202868274U CN203335537U (en) | 2013-05-23 | 2013-05-23 | Energy recycling hydraulic system of working device |
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| CN203335537U true CN203335537U (en) | 2013-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267045A (en) * | 2013-05-23 | 2013-08-28 | 山河智能装备股份有限公司 | Energy recycling hydraulic system of working device |
| CN114934559A (en) * | 2022-06-07 | 2022-08-23 | 柳州柳工挖掘机有限公司 | Quick-change device disengagement control system and method and engineering machinery |
-
2013
- 2013-05-23 CN CN2013202868274U patent/CN203335537U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267045A (en) * | 2013-05-23 | 2013-08-28 | 山河智能装备股份有限公司 | Energy recycling hydraulic system of working device |
| CN114934559A (en) * | 2022-06-07 | 2022-08-23 | 柳州柳工挖掘机有限公司 | Quick-change device disengagement control system and method and engineering machinery |
| CN114934559B (en) * | 2022-06-07 | 2023-11-14 | 柳州柳工挖掘机有限公司 | Quick change device disengagement control system, method and engineering machinery |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |