CN104481953B - The pile-up valve that independently controls of throttling limit that assignment of traffic is unrelated with load pressure - Google Patents
The pile-up valve that independently controls of throttling limit that assignment of traffic is unrelated with load pressure Download PDFInfo
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- CN104481953B CN104481953B CN201410765008.7A CN201410765008A CN104481953B CN 104481953 B CN104481953 B CN 104481953B CN 201410765008 A CN201410765008 A CN 201410765008A CN 104481953 B CN104481953 B CN 104481953B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/006—Modular components with multiple uses, e.g. kits for either normally-open or normally-closed valves, interchangeable or reprogrammable manifolds
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Abstract
The invention discloses the throttling unrelated with load pressure of a kind of assignment of traffic and become the independent height controlled response pile-up valve, it includes Multigang valve group, supply oil circuit P, oil return line T, load-sensitive oil circuit LS, described Multigang valve group shares unified supply oil circuit P, oil return line T and load-sensitive oil circuit LS, described Multigang valve group includes N number of valve group, respectively the first valve group, second valve group, ..., N 1 valve group, N joins valve group, here N is greater than being equal to the natural number of 2, the first described valve group, second valve group, ..., N 1 valve group, N joins valve group and has identical composition structure, and have two output oil ports being connected with hydraulic actuator, the first described valve group includes five bi-bit bi-pass electro-hydraulic proportional valves, two shuttle valves, two check valves and two pressure-compensated valves. present configuration composition is simple, Design and Machining is convenient, interchangeability is strong.
Description
Technical field
The present invention relates to the height response pile-up valve that a kind of hydraulic system throttling limit independently controls, particularly relate to the pile-up valve that a kind of assignment of traffic throttling limit unrelated with load pressure independently controls.
Background technology
The hydraulic system that assignment of traffic is unrelated with load pressure, refers to and controls pump and pressure compensated distribution of load independent flow system with executor's highest load pressure. Principle be pressure-compensated valve is placed in main valve after, system pressure is carried out valve post-compensation, the pressure reduction of each actuator when multiple actuators work simultaneously, compensates the pressure of the less actuator of pressure with the pressure of maximum pressure actuator, so that can be kept at any time constant. Therefore can realizing the pro rate to multiple actuator flows, when executor's necessary flow is more than the flow of pump, assignment of traffic can be given each executor by system in proportion, rather than flows to the executor of light load.
Realize the assignment of traffic hydraulic system unrelated to load pressure to be mainly made up of load-reacting pump, assignment of traffic control valve, pressure compensator, shuttle valve and corresponding sensing oil circuit. Assignment of traffic controls valve by controlling the flow reaching to control hydraulic actuator while bidirectional throttle limit, and then controls the purpose of its motion. Assignment of traffic controls the usual only one of which of valve and controls spool, this single spool double-direction control to throttling limit, will necessarily cause restriction loss and the energy expenditure of one of both, in turn result in the relatively low efficiency of hydraulic system and response performance. , generally require for different types of hydraulic actuator meanwhile, design and process different types of control spool, thus causing assignment of traffic to control poor, the spool design processing difficulties of interchangeability etc. of valve.
Summary of the invention
In order to overcome prior art above shortcomings, the height response pile-up valve that the throttling limit that the present invention provides a kind of assignment of traffic unrelated with load pressure independently controls, the present invention not only has the characteristic that assignment of traffic is unrelated with load pressure, and simple in construction, Design and Machining are convenient, interchangeability is good, and hydraulic system is made to have higher efficiency and response performance.
The technical solution adopted for the present invention to solve the technical problems is:
The pile-up valve that independently controls of throttling limit that a kind of assignment of traffic is unrelated with load pressure, it includes Multigang valve group, supply oil circuit P, oil return line T, load-sensitive oil circuit LS, described Multigang valve group shares unified supply oil circuit P, oil return line T and load-sensitive oil circuit LS, described Multigang valve group includes N number of valve group, respectively the first valve group, second valve group, ..., N 1 valve group, N joins valve group, here N is greater than being equal to the natural number of 2, the first described valve group, second valve group, ..., N 1 valve group, N joins valve group and has identical composition structure, and have two output oil ports being connected with hydraulic actuator, the first described valve group includes five bi-bit bi-pass electro-hydraulic proportional valves, two shuttle valves, two check valves and two pressure-compensated valves, first interface channel of the first interface channel of first valve group the first bi-bit bi-pass electro-hydraulic proportional valve, the first interface channel of the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve and the first interface channel of first valve group the first check valve and first valve group the second pressure-compensated valve is connected, first interface channel of the first interface channel of first valve group the second bi-bit bi-pass electro-hydraulic proportional valve, the first interface channel of the first valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve and the first interface channel of first valve group the second check valve and first valve group the first pressure-compensated valve is connected, first interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve, the second interface channel of the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve and the second interface channel of the first valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve are connected with supply oil circuit P, second interface channel of first valve group the first bi-bit bi-pass electro-hydraulic proportional valve, the second interface channel of first valve group the second bi-bit bi-pass electro-hydraulic proportional valve and the second interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve are with oil return line T-phase even, the first of first valve group the second shuttle valve is compared end and is connected with the second interface channel of first valve group the second pressure-compensated valve and the second interface channel of first valve group the first check valve, the second of first valve group the second shuttle valve is compared end and is connected with the second interface channel of first valve group the first pressure-compensated valve and the second interface channel of first valve group the second check valve, the output oil port of first valve group the second shuttle valve and the first of first valve group the first shuttle valve are compared end and are connected, the second of first valve group the first shuttle valve is compared end and is connected with the output oil port of second valve group the first shuttle valve, and the output oil port of first valve group the first shuttle valve, the control port of first valve group the first pressure-compensated valve are connected with load-sensitive oil circuit LS with the control port of first valve group the second pressure-compensated valve,
The second of second valve group the first shuttle valve is compared end and is connected with the output oil port of the 3rd valve group the first shuttle valve; By that analogy, the second of N-1 connection valve group the first shuttle valve is compared end and is connected with the N output oil port joining valve group the first shuttle valve, and the second of N connection valve group the first shuttle valve is compared end and be connected with load-sensitive oil circuit LS; The output oil port of first valve group the first shuttle valve and N join the control port of valve the first pressure-compensated valve and N valve group joins the control port of the second pressure-compensated valve and is connected.
Each master input device is to controller input signal, after controller receives signal, carry out processing and judging, different control logics is selected according to duty requirements, then join valve group to correspondence and send control signal, thus changing the on off operating mode of proportioning valve in each valve group, thus realizing controlling the action of hydraulic actuator, in the process of non-athletic state, the O corresponding with conventional valve, H, Y, K, M, P, J, C, N-type Median Function can be realized by changing different control signal.
The invention has the beneficial effects as follows: the present invention only need to by existing high response electro-hydraulic proportional valve, pressure-compensated valve, shuttle valve and check valve carry out organic assembling, need not according to hydraulic actuator to valve body, spool carries out particular design, processing, therefore its structure composition is simple, easy to process, small lot customized production is changed into production in enormous quantities, while ensureing performance, achieve comparatively considerable economic benefit, in addition, interchangeability of the present invention is strong, in needing the assignment of traffic valve control hydraulic system unrelated with load pressure, can effectively replace, hydraulic system after replacement not only has the function that assignment of traffic is unrelated with load pressure, and there is import and export oil circuit and independently control, Median Function arbitrarily regulates and high responsiveness energy,
Accompanying drawing explanation
Fig. 1 is the pile-up valve schematic diagram that independently controls of throttling limit that assignment of traffic is unrelated with load pressure;
Fig. 2 is the pile-up valve hydraulic system applications schematic diagram that independently controls of throttling limit that assignment of traffic is unrelated with load pressure;
Fig. 3 is the pile-up valve hydraulic system applications theory diagram that independently controls of throttling limit that assignment of traffic is unrelated with load pressure.
In above-mentioned accompanying drawing, 1. the first valve group hydraulic cylinder, 2. the height response pile-up valve group that the throttling limit that assignment of traffic is unrelated with load pressure independently controls, 3. first valve group the first shuttle valve, 4. first valve group the first pressure-compensated valve, 5. first valve group the second shuttle valve, 6. first valve group the second pressure-compensated valve, 7. first valve group the first check valve, 8. first valve group the second check valve, 9. first valve group the first bi-bit bi-pass electro-hydraulic proportional valve, 10. first valve group the second bi-bit bi-pass electro-hydraulic proportional valve, 11. the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve, 12. the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve, 13. the first valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve, 14. variable pump, 15. the second valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve, 16. the second valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve, 17. the second valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve, 18. second valve group the first bi-bit bi-pass electro-hydraulic proportional valve, 19. second valve group the second bi-bit bi-pass electro-hydraulic proportional valve, 20. second valve group the second check valve, 21. second valve group the first check valve, 22. the second valve group pressure-compensated valve, 23. second valve group the second shuttle valve, 24. second valve group the first pressure-compensated valve, 25. second valve group the first shuttle valve, 26. the second valve group hydraulic cylinder.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in more detail with being embodied as example.
Embodiment
Fig. 1,2 it is an embodiment disclosed by the invention, this assignment of traffic throttling limit height that independently control unrelated with load pressure responds pile-up valve, including Multigang valve group, supply oil circuit P, oil return line T, load-sensitive oil circuit LS, Multigang valve group shares unified supply oil circuit P, oil return line T and load-sensitive oil circuit LS, and each valve group has two output oil ports being connected with hydraulic actuator; Described Multigang valve group includes two valve groups, respectively the first valve group and the second valve group, and the structure composition often joining valve group is identical;
The first described valve group includes five bi-bit bi-pass electro-hydraulic proportional valves, two shuttle valves, two check valves and two each and every one pressure-compensated valves; first interface channel of first valve group the first bi-bit bi-pass electro-hydraulic proportional valve 9, first interface channel of the first interface channel of the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve 12 and the first interface channel of first valve group the first check valve 7 and first valve group the second pressure-compensated valve 6 is connected, first interface channel of first valve group the second bi-bit bi-pass electro-hydraulic proportional valve 10, first interface channel of the first interface channel of the first valve group the 5th bi-bit bi-pass electric-hydraulic proportion 13 valve and the first interface channel of first valve group the second check valve 8 and first valve group the first pressure-compensated valve 4 is connected, first interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 11, second interface channel of the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve 12 and the second interface channel of the first valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve 13 are connected with oil feeding line P, second interface channel of first valve group the first bi-bit bi-pass electro-hydraulic proportional valve 9, second interface channel of first valve group the second bi-bit bi-pass electro-hydraulic proportional valve 10 and the second interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 11 are with oil return line T-phase even, the first of first valve group the second shuttle valve 5 is compared end and is connected with the second interface channel of first valve group the second pressure-compensated valve 6 and the second interface channel of first valve group the first check valve 7, the second of first valve group the second shuttle valve 5 is compared end and is connected with the second interface channel of first valve group the first pressure-compensated valve 4 and the second interface channel of first valve group the second check valve 8, the output oil port of first valve group the second shuttle valve 5 and the first of first valve group the first shuttle valve 3 are compared end and are connected,
The second described valve group includes five bi-bit bi-pass electro-hydraulic proportional valves, two shuttle valves, two check valves and two pressure-compensated valves; First interface channel of the first interface channel of second valve group the first bi-bit bi-pass electro-hydraulic proportional valve 18, the first interface channel of the second valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve 16 and the first interface channel of second valve group the first check valve 21 and second valve group the second pressure-compensated valve 24 is connected; First interface channel of the first interface channel of second valve group the second bi-bit bi-pass electro-hydraulic proportional valve 19, the first interface channel of the second valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve 17 and the first interface channel of second valve group the second check valve 20 and second valve group the first pressure-compensated valve 22 is connected; First interface channel of the second valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 15, the second interface channel of the second valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve 16 and the second interface channel of the second valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve 17 are connected with supply oil circuit P; Second interface channel of second valve group the first bi-bit bi-pass electro-hydraulic proportional valve 18, the second interface channel of second valve group the second bi-bit bi-pass electro-hydraulic proportional valve 19 and the second interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 15 are with oil return line T-phase even; The first of second valve group the second shuttle valve 23 is compared end and is connected with the second interface channel of second valve group the second pressure-compensated valve 24 and the second interface channel of second valve group the first check valve 21; The second of second valve group the second shuttle valve 23 is compared end and is connected with the second interface channel of second valve group the first pressure-compensated valve 22 and the second interface channel of second valve group the second check valve 20; The output oil port of second valve group the second shuttle valve 23 and the first of second valve group the first shuttle valve 25 are compared end and are connected; The second of second valve group the first shuttle valve 25 is compared end and is connected with load-sensitive oil circuit LS;
The second of first valve group the first shuttle valve 3 is compared end and is connected with the output oil port of second valve group the first shuttle valve 25, and the output oil port of first valve group the first shuttle valve 3, the control port of first valve group the first pressure-compensated valve 4, the control port of first valve group the second pressure-compensated valve 6, the control port of second valve group the first pressure-compensated valve 22 are connected with load-sensitive oil circuit LS with the control port of second valve group the second pressure-compensated valve 24.
In conjunction with Fig. 2, 3 illustrate that the assignment of traffic throttling limit height that independently control unrelated with load pressure responds the workflow of pile-up valve: variable pump 14 is whole hydraulic system offer power, each master input device is to controller input signal, after controller receives signal, carry out processing and judging, different control logics is selected according to duty requirements, then join valve group to correspondence and send control signal, thus changing the on off operating mode of proportioning valve in each valve group, thus realizing controlling the action of hydraulic actuator, in the process of non-athletic state, the O corresponding with conventional valve can be realized by changing different control signal, H, Y, K, M, P, J, C, N-type Median Function.
Illustrate to apply the hydraulic work system state of the height response pile-up valve independently controlled into the throttling limit that assignment of traffic is unrelated with load pressure according to table 1: identical with the first joint control logic for the first, the second; When the first valve group second and the 4th bi-bit bi-pass electro-hydraulic proportional valve 10 and 12 are opened, and the first valve group the first, the 3rd and the 5th bi-bit bi-pass electro-hydraulic proportional valve 9,11 and 13 simultaneously closes off simultaneously, the piston rod of hydraulic cylinder 1 is protruding;When the first valve group second and the 5th bi-bit bi-pass electro-hydraulic proportional valve 9 and 13 are opened simultaneously, when the first valve group second, third and the 4th bi-bit bi-pass electro-hydraulic proportional valve 10,11 and 12 simultaneously close off, the piston rod of hydraulic cylinder 1 is to retraction; When five the first valve group first, second, third, fourth and fifth bi-bit bi-pass electro-hydraulic proportional valves 9,10,11,12 and 13 Close All, it is achieved O type Median Function; When the first valve group the first, second, the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 9,10,12 and 13 is opened simultaneously, when the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 11 cuts out, it is achieved H type Median Function; When first valve group the first and second bi-bit bi-pass electro-hydraulic proportional valve 9 and 10 is opened simultaneously, when the first valve group the three, the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 11,12 and 13 simultaneously closes off, it is achieved Y type Median Function; When the first valve group first and the 4th bi-bit bi-pass electro-hydraulic proportional valve 9 and 12 are opened simultaneously, when the first valve group second, third and the 5th bi-bit bi-pass electro-hydraulic proportional valve 10,11 and 13 simultaneously close off, it is achieved K type Median Function; When the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 11 is opened, when the first valve group the first, second, the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 9,10,12 and 13 simultaneously closes off, it is achieved M type Median Function; When the first valve group the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 12 and 13 is opened, and the first valve group first, second, and third bi-bit bi-pass electro-hydraulic proportional valve 9,10 and 11 simultaneously closes off simultaneously, it is achieved P type Median Function; When first valve group the second bi-bit bi-pass electro-hydraulic proportional valve 10 is opened, and the first valve group the first, the three, the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 9,11,12 and 13 simultaneously closes off, it is achieved J type Median Function; When the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve 11 is opened, when the first valve group the first, second, the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 9,10,12 and 13 simultaneously closes off, it is achieved C type Median Function; When first valve group the first bi-bit bi-pass electro-hydraulic proportional valve 9 is opened, the first valve group second, third, the 4th and the 5th bi-bit bi-pass electro-hydraulic proportional valve 10,11,12 and 13 when simultaneously closing off, it is achieved N-type Median Function.
The table 1 assignment of traffic throttling limit height that independently control unrelated with load pressure responds pile-up valve action and middle bit function realizes list
Claims (1)
1. the pile-up valve that the throttling limit that an assignment of traffic is unrelated with load pressure independently controls, it is characterized in that: it includes Multigang valve group, supply oil circuit P, oil return line T, load-sensitive oil circuit LS, described Multigang valve group shares unified supply oil circuit P, oil return line T and load-sensitive oil circuit LS, described Multigang valve group includes N number of valve group, respectively the first valve group, second valve group, ..., N 1 valve group, N joins valve group, here N is greater than being equal to the natural number of 2, the first described valve group, second valve group, ..., N 1 valve group, N joins valve group and has identical composition structure, and have two output oil ports being connected with hydraulic actuator, the first described valve group includes five bi-bit bi-pass electro-hydraulic proportional valves, two shuttle valves, two check valves and two pressure-compensated valves, first interface channel of the first interface channel of first valve group the first bi-bit bi-pass electro-hydraulic proportional valve, the first interface channel of the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve and the first interface channel of first valve group the first check valve and first valve group the second pressure-compensated valve is connected,First interface channel of the first interface channel of first valve group the second bi-bit bi-pass electro-hydraulic proportional valve, the first interface channel of the first valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve and the first interface channel of first valve group the second check valve and first valve group the first pressure-compensated valve is connected; First interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve, the second interface channel of the first valve group the 4th bi-bit bi-pass electro-hydraulic proportional valve and the second interface channel of the first valve group the 5th bi-bit bi-pass electro-hydraulic proportional valve are connected with supply oil circuit P; Second interface channel of first valve group the first bi-bit bi-pass electro-hydraulic proportional valve, the second interface channel of first valve group the second bi-bit bi-pass electro-hydraulic proportional valve and the second interface channel of the first valve group the 3rd bi-bit bi-pass electro-hydraulic proportional valve are with oil return line T-phase even; The first of first valve group the second shuttle valve is compared end and is connected with the second interface channel of first valve group the second pressure-compensated valve and the second interface channel of first valve group the first check valve; The second of first valve group the second shuttle valve is compared end and is connected with the second interface channel of first valve group the first pressure-compensated valve and the second interface channel of first valve group the second check valve; The output oil port of first valve group the second shuttle valve and the first of first valve group the first shuttle valve are compared end and are connected; The second of first valve group the first shuttle valve is compared end and is connected with the output oil port of second valve group the first shuttle valve, and the output oil port of first valve group the first shuttle valve, the control port of first valve group the first pressure-compensated valve are connected with load-sensitive oil circuit LS with the control port of first valve group the second pressure-compensated valve;
The second of second valve group the first shuttle valve is compared end and is connected with the output oil port of the 3rd valve group the first shuttle valve; By that analogy, the second of N-1 connection valve group the first shuttle valve is compared end and is connected with the N output oil port joining valve group the first shuttle valve, and the second of N connection valve group the first shuttle valve is compared end and be connected with load-sensitive oil circuit LS; The control port of control port and N connection valve group the second pressure-compensated valve that the output oil port of first valve group the first shuttle valve and N join valve group valve the first pressure-compensated valve is connected.
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| CN201410765008.7A CN104481953B (en) | 2014-12-12 | 2014-12-12 | The pile-up valve that independently controls of throttling limit that assignment of traffic is unrelated with load pressure |
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| CN201410765008.7A CN104481953B (en) | 2014-12-12 | 2014-12-12 | The pile-up valve that independently controls of throttling limit that assignment of traffic is unrelated with load pressure |
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| CN109083890A (en) * | 2018-08-23 | 2018-12-25 | 江苏理工学院 | A kind of assignment of traffic double valve-regulated load port separate control valves unrelated with load |
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| CN101975201A (en) * | 2010-11-02 | 2011-02-16 | 赵国普 | Single-pump multi-executing mechanism hydraulic control system |
| CN102052361A (en) * | 2010-11-02 | 2011-05-11 | 王开怀 | Novel hydraulic oil channel integrated valve for loader |
| CN103144566A (en) * | 2013-03-27 | 2013-06-12 | 长治清华机械厂 | Hoisting hydraulic system of large-tonnage non-highway mine dumper |
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|---|---|
| CN104481953A (en) | 2015-04-01 |
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Denomination of invention: Integrated valve with independent control of throttling edge and flow distribution independent of load pressure Effective date of registration: 20210202 Granted publication date: 20160615 Pledgee: Wuxi rural commercial bank Limited by Share Ltd. Pledgor: Beijing North Liyuan intelligent Polytron Technologies Inc. Registration number: Y2021990000142 |
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