CN106122153B - A kind of load-sensitive proportional multi-way valve replicated with load pressure - Google Patents
A kind of load-sensitive proportional multi-way valve replicated with load pressure Download PDFInfo
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- CN106122153B CN106122153B CN201610787641.5A CN201610787641A CN106122153B CN 106122153 B CN106122153 B CN 106122153B CN 201610787641 A CN201610787641 A CN 201610787641A CN 106122153 B CN106122153 B CN 106122153B
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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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
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- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention belongs to hydraulic multitandem valve technical fields, and in particular to a kind of load-sensitive proportional multi-way valve replicated with load pressure.The present invention in order to solve the problems, such as flow loss existing for existing multi-way valve is serious, the load signal in LS circuits can influence controlled by logic, and then provide a kind of load-sensitive proportional multi-way valve replicated with load pressure, valve, guide's pressure reducing valve and main safety valve are replicated including main valve, shuttle valve, pressure-compensated valve, pressure, load signal by shuttle valve relatively after, it acts on pressure to replicate at the spool of valve, by the pressure signal transmission of duplication to the LS mouths of pump；The present invention is equipped with pressure and replicates valve, can carry out logic control, and can improve the response speed of system, and LS signals do not consume the fluid in actuator port, reduce flow loss to load signal, improve the utilization rate of the energy.
Description
Technical field
The invention belongs to hydraulic multitandem valve technical fields, and in particular to a kind of load-sensitive ratio replicated with load pressure
Example multi-way valve.
Background technology
With the continuous development of modern hydraulic technology and the raising of site requirement so that engineering goods just towards precision,
The direction of energy-saving is developed.Speed governing valve element is reduced using the hydraulic system of load-sensitive technology, integrated level is high, and can be real
The electrodeless adjustment of existing system executive component speed, and adjust accurately, process is steady, and energy loss is small, therefore in engineering machinery, ore deposit
It is widely used with fields such as equipment.
At present, domestic most common load sensing multi-way valve, after actuator port obtains load signal, is compared by shuttle valve
Maximum load signal is taken, the LS mouths of pump is directly delivered to, due to the draining of the LS adjusters of pump, multi-way valve actuator port is made always to have
The flow loss of 1~2L/min；In addition, when needing logic control in LS circuits, the load signal of existing multi-way valve can be produced
It is raw to influence.
Invention content
In view of the above existing problems in the prior art, the present invention provides the load-sensitive ratio replicated with load pressure is more
Road valve can make load-sensitive proportional multi-way valve not lose the flow of actuator port, it can be achieved that the logic control of LS, improves system
Response speed, elimination system is when the improvement stage starts, the micro decline of load pressure.
The present invention adopts the following technical scheme that：
A kind of load-sensitive proportional multi-way valve replicated with load pressure, including main valve, shuttle valve, pressure-compensated valve, pressure
Power replicates valve, guide's pressure reducing valve and main safety valve, and the pressure-compensated valve, pressure replicate valve, guide's pressure reducing valve and main safety valve
Oil inlet be connected to P mouthfuls, the outlet of pressure-compensated valve and the import of main valve connect, and the oil outlet of guide's pressure reducing valve is connected to Z
Mouthful, the oil outlet of main safety valve is connected to T mouthfuls, and the load signal of main valve oil outlet enters shuttle valve, shuttle by valve core inside oil duct
The output loading signal PL of valve acts on the spool right end that pressure replicates valve, and P mouthfuls of pressure oils act on after pressure replicates valve decompression
The spool left end of valve is replicated in pressure, the signal after pressure replicates valve decompression is the LS signals for passing to pump.Wherein, it is for P mouthfuls
Multi-way valve oil inlet, T mouthfuls are multi-way valve oil return opening, and Z mouthfuls are pilot control hydraulic fluid port, and LS signals are to replicate the negative of valve conversion through pressure
Information carrying number, PL signals are the actual loading signal of main valve actuator port.
It is hydraulically-controlled type proportioning valve that the pressure, which replicates valve, and pressure replicates the spool both ends area equation of valve, and pressure replicates valve
Spool right end is equipped with resetting spring.
The pressure replicates the import on piece that valve, guide's pressure reducing valve and main safety valve are integrated in multi-way valve.
The operation principle of multi-way valve is：
Load signal at main valve oil outlet A or B enters shuttle valve by valve core inside oil duct, passes through shuttle valve and previous stage
Load signal is compared, and the load signal PL after comparing acts on pressure and replicates spool right end, and pressure is made to replicate spool in PL
It is moved to the left under pressure effect, pressure replicates the P mouths of valve and LS mouthfuls are connected；
It adjusts the amount of opening of P mouthfuls and LS mouthfuls in real time by pressure duplication spool, P mouthfuls of pressure is made to decline and act on pressure and are answered
Spool left end processed, the pressure signal replicated after valve decompression by pressure is LS signals（That is copy function）；
The real-time adjustment of spool is replicated by pressure, is always ensured that LS signals are equal with load signal PL, is replicated through pressure
The pressure signal transmission that valve replicates is to the LS mouths of pump.
The present invention has the advantages that：
1st, P mouth of the LS signals fluid of pump from multi-way valve is passed to, load signal is not needed in consumption actuator port
Fluid reduces flow loss, improves the utilization rate of the energy；
2nd, the present invention is that the pressure copy function of valve is replicated by pressure（LS signals are equal with PL signals）It realizes to load
The logic control of signal, does not influence load signal；
3rd, there is fluid to flow to LS mouthfuls always, improve the response speed of system；
4th, the load signal of valve taking-up is replicated by pressure, system can be eliminated when the improvement stage starts, load pressure
Micro decline.
Description of the drawings
Fig. 1 is the hydraulic schematic diagram of the present invention；
Fig. 2 is the multi-way valve import piece that spool is replicated with pressure；
In figure：1. main valve, 2. shuttle valves, 3. pressure-compensated valves, 4. pressure duplication valve, 5. guide's pressure reducing valves, 6. main safety valves,
7. pressure replicates spool, 8. resetting springs, 9. plugs.
Specific embodiment
With reference to attached drawing, the specific embodiment of the present invention is described further：
As shown in Figure 1, multi-way valve of the present invention, which includes main valve 1, shuttle valve 2, pressure-compensated valve 3, pressure, replicates valve 4, elder generation
Pressure reducing valve 5, main safety valve 6 are led, the pressure-compensated valve 3, pressure replicate the oil inlet of valve 4, guide's pressure reducing valve 5 and main safety valve 6
Mouth is connected to the P mouths of multi-way valve, and the outlet of pressure-compensated valve 3 and the import of main valve connect, the oil outlet connection of guide's pressure reducing valve 5
To Z mouthfuls, the oil outlet of main safety valve 6 is connected to T mouthfuls.The pressure replicates valve 4 as proportioning valve, at main valve 1 oil outlet A or B
Load signal enters shuttle valve 2 by valve core inside oil duct, is compared by shuttle valve 2 and the load signal of previous stage, after comparing
Load signal PL act on the right end that pressure replicates spool 7, after P mouthful of pressure oil replicates 4 depressurization of valve by pressure, through pressing
Power replicates channeling in spool 7 in spool left end, and it is LS signals that the pressure signal after valve 4 depressurizes is replicated by pressure,
The effect of spool 7 is replicated by pressure, makes LS signals equal with load signal PL, this pressure signal transmission replicated is to the LS of pump
Mouthful.
It is a hydraulically-controlled type proportioning valve that pressure, which replicates valve 4, in the multi-way valve, and the dynamic in real time of spool 7 is replicated by pressure
Make, ensure that LS signals are equal with load signal PL.
Pressure replicates 7 both ends area equation of spool, internal processing channel, and the rigidity of spring is small, only plays reset role.
Load signal PL can be measured by valve body upper hydraulic fluid port on the multi-way valve.
LS signals can carry out external logic control on the multi-way valve.
P mouthfuls of oil replicates valve 4 by pressure always and flows to LS mouthfuls on the multi-way valve, improves the response speed of system.
P mouth of the LS signals fluid of pump from multi-way valve is passed to, does not consume the fluid in actuator port.
The load signal of valve acquisition is replicated by pressure, logic control can be carried out, do not influence load signal.
By pressure replicate valve take out load signal, elimination system when the improvement stage starts, load pressure it is micro
Decline.
When multi-way valve does not operate, load signal PL is zero at this time, act on pressure replicate 7 left end of spool LS mouths and P mouthfuls
It communicates, pressure replicates spool 7 under the effect of LS pressure, and resetting spring 8 is overcome to move right, and closes P mouthfuls and LS mouthfuls, while LS mouthfuls
With PL mouthfuls of connections, LS mouthfuls of pressure are reduced to zero.
When multi-way valve operates, maximum load pressure signal P L in road is fetched at this time, and pressure replicates spool 7 and acted in PL pressure
Under be moved to the left, pressure replicates P mouthful of valve and LS mouthful connections, and replicates by pressure that spool 7 is real-time to be adjusted P mouthfuls and opened with LS mouthfuls
Mouthful amount, makes P mouthful pressure be reduced to LS pressure, acts on the left end of pressure duplication spool 7, when LS pressure is equal with PL pressure, at this time
Pressure replicates spool 7 and keeps dynamic balance state, and the moment makes LS pressure equal with PL pressure.
The load-sensitive proportional multi-way valve that load pressure designed by the present invention replicates, can carry out cloth on existing valve body
It puts, it is compact-sized, not only meet pressure and flow needed for operating mechanism, but also the flow of actuator port can be made full use of,
Also logical design can be carried out to load signal, further improves the response speed and power conservation requirement of multi-way valve.
The components such as valve of without specific instruction are the prior art in the present invention.
Claims (4)
1. a kind of load-sensitive proportional multi-way valve replicated with load pressure, it is characterised in that：Including main valve（1）, shuttle valve
（2）, pressure-compensated valve（3）, pressure replicate valve（4）, guide's pressure reducing valve（5）And main safety valve（6）, the pressure-compensated valve（3）、
Pressure replicates valve（4）, guide's pressure reducing valve（5）And main safety valve（6）Oil inlet be connected to P mouthfuls, pressure-compensated valve（3）Outlet
With main valve（1）Import connection, guide's pressure reducing valve（5）Oil outlet be connected to Z mouthfuls, main safety valve（6）Oil outlet be connected to T
Mouthful, main valve（1）The load signal of oil outlet enters shuttle valve by valve core inside oil duct（2）, shuttle valve（2）Output loading signal PL
It acts on pressure and replicates valve（4）Spool right end, P mouthfuls of pressure oils through pressure replicate valve（4）Pressure is acted on after decompression and replicates valve
（4）Spool left end, through pressure replicate valve（4）Signal after decompression is the LS signals for passing to pump.
2. the load-sensitive proportional multi-way valve according to claim 1 replicated with load pressure, it is characterised in that：It is described
Pressure replicates valve（4）For hydraulically-controlled type proportioning valve, pressure replicates valve（4）Spool both ends area equation, it is right that pressure replicates valve core
End is equipped with resetting spring（8）.
3. the load-sensitive proportional multi-way valve according to claim 2 replicated with load pressure, it is characterised in that：It is described
Pressure replicates valve（4）, guide's pressure reducing valve（5）And main safety valve（6）It is integrated in the import on piece of multi-way valve.
4. the load-sensitive proportional multi-way valve according to claim 3 replicated with load pressure, it is characterised in that multichannel
The specific control process of valve is：
Main valve（1）Load signal at oil outlet A or B enters shuttle valve by valve core inside oil duct（2）, pass through shuttle valve（2）With it is preceding
The load signal of level-one is compared, and the load signal PL after comparing acts on pressure and replicates spool（7）Right end replicates pressure
Spool（7）It is moved to the left under the effect of PL pressure, pressure replicates valve（4）P mouths with LS mouthful connect；
Spool is replicated by pressure（7）P mouthfuls and LS mouthfuls of amount of opening are adjusted in real time, and P mouthfuls of pressure is made to decline and act on pressure and are answered
Spool processed（7）Left end replicates valve by pressure（4）Pressure signal after decompression is LS signals；
Spool is replicated by pressure（7）Real-time adjustment, be always ensured that LS signals are equal with load signal PL, through pressure replicate valve
（4）The pressure signal transmission of duplication is to the LS mouths of pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610787641.5A CN106122153B (en) | 2016-08-31 | 2016-08-31 | A kind of load-sensitive proportional multi-way valve replicated with load pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610787641.5A CN106122153B (en) | 2016-08-31 | 2016-08-31 | A kind of load-sensitive proportional multi-way valve replicated with load pressure |
Publications (2)
| Publication Number | Publication Date |
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| CN106122153A CN106122153A (en) | 2016-11-16 |
| CN106122153B true CN106122153B (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610787641.5A Active CN106122153B (en) | 2016-08-31 | 2016-08-31 | A kind of load-sensitive proportional multi-way valve replicated with load pressure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111469825B (en) * | 2020-04-07 | 2021-07-06 | 中国煤炭科工集团太原研究院有限公司 | Full-hydraulic braking efficiency sequential distribution system of mining rubber-tyred vehicle |
| CN113202839B (en) * | 2021-04-13 | 2023-03-24 | 中国煤炭科工集团太原研究院有限公司 | Pilot valve for measuring valve element displacement of multi-way valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0251172B1 (en) * | 1986-06-30 | 1993-05-12 | Vickers Incorporated | Hydraulic control system |
| CN103174697A (en) * | 2013-03-22 | 2013-06-26 | 江苏恒立高压油缸股份有限公司 | Hydraulic valve system with pressure compensation function |
| CN103939405A (en) * | 2014-05-05 | 2014-07-23 | 山河智能装备股份有限公司 | Automatic quick leveling hydraulic control circuit of down-the-hole drill and control method thereof |
| CN104314903A (en) * | 2014-09-30 | 2015-01-28 | 徐州重型机械有限公司 | Fast response device, hydraulic load sensing system and engineering vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005059240A1 (en) * | 2005-12-12 | 2007-06-14 | Linde Ag | Hydrostatic drive system for controlling load of e.g. ground conveyor, has pump with delivery volume adjusting device that is controllable by control device, and circulating device managing connection of feed pipe of pump with container |
-
2016
- 2016-08-31 CN CN201610787641.5A patent/CN106122153B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0251172B1 (en) * | 1986-06-30 | 1993-05-12 | Vickers Incorporated | Hydraulic control system |
| CN103174697A (en) * | 2013-03-22 | 2013-06-26 | 江苏恒立高压油缸股份有限公司 | Hydraulic valve system with pressure compensation function |
| CN103939405A (en) * | 2014-05-05 | 2014-07-23 | 山河智能装备股份有限公司 | Automatic quick leveling hydraulic control circuit of down-the-hole drill and control method thereof |
| CN104314903A (en) * | 2014-09-30 | 2015-01-28 | 徐州重型机械有限公司 | Fast response device, hydraulic load sensing system and engineering vehicle |
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| Publication number | Publication date |
|---|---|
| CN106122153A (en) | 2016-11-16 |
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Effective date of registration: 20211021 Address after: 719000 west side of South section of Kaiyuan Avenue, high tech Industrial Park, Yulin City, Shaanxi Province Patentee after: YULIN S&G COAL MINE MACHINERY Co.,Ltd. Address before: 030006 Shanxi Province, Taiyuan city and State Road No. 108 Patentee before: TAIYUAN INSTITUTE OF CHINA COAL TECHNOLOGY AND ENGINEERING Group Patentee before: SHANXI TIANDI COAL MINING MACHINERY Co.,Ltd. |
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