CN106122153A - A kind of have the load-sensitive proportional multi-way valve that load pressure replicates - Google Patents
A kind of have the load-sensitive proportional multi-way valve that load pressure replicates Download PDFInfo
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- CN106122153A CN106122153A CN201610787641.5A CN201610787641A CN106122153A CN 106122153 A CN106122153 A CN 106122153A CN 201610787641 A CN201610787641 A CN 201610787641A CN 106122153 A CN106122153 A CN 106122153A
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- valve
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- replicates
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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
Abstract
The invention belongs to hydraulic multitandem valve technical field, be specifically related to a kind of load-sensitive proportional multi-way valve with load pressure duplication.The present invention is to solve that the flow loss that existing banked direction control valves exists is serious, load signal in LS loop can the problem of impact controlled by logic, and then provide a kind of load-sensitive proportional multi-way valve with load pressure duplication, valve, guide's air relief valve and main safety valve is replicated including main valve, shuttle valve, pressure-compensated valve, pressure, load signal by shuttle valve relatively after, act on pressure and replicate at the spool of valve, by the pressure signal transmission of duplication to the LS mouth of pump；The present invention is provided with pressure and replicates valve, and load signal can carry out logic control, and can improve the response speed of system, and LS signal does not consume the fluid in actuator port, decreases flow loss, improves the utilization rate of the energy.
Description
Technical field
The invention belongs to hydraulic multitandem valve technical field, be specifically related to a kind of load-sensitive ratio with load pressure duplication
Example banked direction control valves.
Background technology
Development and the raising of field requirement along with modern hydraulic technology so that engineering goods just towards precision,
The direction of energy-saving is developed.The hydraulic system using load-sensitive technology decreases flow speed control valve class component, and integrated level is high, and can be real
The electrodeless regulation of existing system executive component speed, and regulation is accurately, process is steady, and energy loss is little, therefore in engineering machinery, ore deposit
It is widely used with fields such as equipment.
At present, domestic the most frequently used load sensing multi-way valve, after actuator port obtains load signal, is compared by shuttle valve
Take maximum load signal, be directly delivered to the LS mouth of pump, due to the draining of the LS actuator of pump, make banked direction control valves actuator port always have
The flow loss of 1～2L/min；It addition, when LS loop needs logic control, the load signal of existing banked direction control valves can be produced
Raw impact.
Summary of the invention
The problem existed for above-mentioned prior art, the present invention provides the load-sensitive ratio with load pressure duplication many
Road valve, can make load-sensitive proportional multi-way valve not lose the flow of actuator port, can realize the logic control of LS, improves system
Response speed, elimination system is when the improvement stage starts, and the trace of load pressure declines.
The present invention adopts the following technical scheme that
A kind of have the load-sensitive proportional multi-way valve that load pressure replicates, multiple including main valve, shuttle valve, pressure-compensated valve, pressure
Valve processed, guide's air relief valve and main safety valve, described pressure-compensated valve, pressure replicate entering of valve, guide's air relief valve and main safety valve
Hydraulic fluid port is connected to P mouth, and the outlet of pressure-compensated valve is connected with the import of main valve, and the oil-out of guide's air relief valve is connected to Z mouth, main
The oil-out of relief valve is connected to T mouth, and the load signal of main valve oil-out enters shuttle valve, shuttle valve defeated by valve core inside oil duct
Going out load signal PL and act on the spool right-hand member of pressure duplication valve, P mouth pressure oil acts on pressure after pressure replicates valve decompression
Replicating the spool left end of valve, replicating the post-decompression signal of valve through pressure is the LS signal passing to pump.Wherein, P mouth is banked direction control valves
Oil-in, T mouth is banked direction control valves oil return opening, and Z mouth is pilot control hydraulic fluid port, and LS signal is the load letter replicating valve conversion through pressure
Number, PL signal is the actual loading signal of main valve actuator port.
It is hydraulically-controlled type proportioning valve that described pressure replicates valve, and pressure replicates the spool two ends area equation of valve, and pressure replicates valve
Spool right-hand member is provided with back-moving spring.
Described pressure replicates valve, guide's air relief valve and main safety valve and is integrated on the import sheet of banked direction control valves.
The operation principle of banked direction control valves is:
Load signal at main valve oil-out A or B enters shuttle valve by valve core inside oil duct, by the load of shuttle valve Yu previous stage
Signal compares, and the load signal PL after comparing acts on pressure and replicates spool right-hand member, makes pressure replicate spool at PL pressure
Being moved to the left under effect, pressure replicates the P mouth of valve and connects with LS mouth；
Replicate spool by pressure and adjust the opening amount of P mouth and LS mouth in real time, make P mouth pressure decline and act on pressure to replicate valve
Core left end, replicates the post-decompression pressure signal of valve by pressure and is LS signal (i.e. copy function)；
Replicated the real-time adjustment of spool by pressure, be always ensured that LS signal is equal with load signal PL, replicate valve through pressure multiple
The pressure signal transmission of system is to the LS mouth of pump.
There is advantages that
1, passing to the LS signal fluid P mouth from banked direction control valves of pump, load signal need not consume the fluid in actuator port,
Decrease flow loss, improve the utilization rate of the energy；
2, the present invention is to replicate pressure copy function (LS signal is equal with the PL signal) realization of valve to load signal by pressure
Logic control, do not affect load signal；
3, there is fluid to flow to LS mouth all the time, improve the response speed of system；
4, by pressure replicate valve take out load signal, the system that can eliminate when the improvement stage starts, the trace of load pressure
Decline.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of the present invention；
Fig. 2 is the banked direction control valves import sheet that band pressure replicates spool；
In figure: 1. main valve, 2. shuttle valve, 3. pressure-compensated valve, 4. pressure replicates valve, 5. guide's air relief valve, 6. main safety valve, 7. pressure
Power replicates spool, 8. back-moving spring, 9. plug.
Detailed description of the invention
In conjunction with accompanying drawing, the detailed description of the invention of the present invention is described further:
As it is shown in figure 1, banked direction control valves of the present invention includes that main valve 1, shuttle valve 2, pressure-compensated valve 3, pressure replicate valve 4, guide subtracts
Pressure valve 5, main safety valve 6, described pressure-compensated valve 3, pressure replicate the oil-in of valve 4, guide's air relief valve 5 and main safety valve 6 even
Being connected to the P mouth of banked direction control valves, the outlet of pressure-compensated valve 3 is connected with the import of main valve, and the oil-out of guide's air relief valve 5 is connected to Z
Mouthful, the oil-out of main safety valve 6 is connected to T mouth.It is proportioning valve that described pressure replicates valve 4, the load at main valve 1 oil-out A or B
Signal enters shuttle valve 2 by valve core inside oil duct, is compared by the load signal of shuttle valve 2 with previous stage, bearing after comparing
Information carrying PL acts on pressure and replicates the right-hand member of spool 7, after the pressure oil of P mouth is replicated valve 4 decompressing effect by pressure, multiple through pressure
Channeling in spool 7 processed, at spool left end, replicates the post-decompression pressure signal of valve 4 by pressure and is LS signal, pass through
Pressure replicates the effect of spool 7, makes LS signal equal with load signal PL, and this pressure signal transmission replicated is to the LS mouth of pump.
In described banked direction control valves, pressure replicates valve 4 is a hydraulically-controlled type proportioning valve, replicates the most dynamic of spool 7 by pressure
Make, it is ensured that LS signal is equal with load signal PL.
Pressure replicates spool 7 two ends area equation, internal processing channel, and the rigidity of spring is little, only plays reset role.
On described banked direction control valves, load signal PL can be measured by hydraulic fluid port on valve body.
On described banked direction control valves, LS signal can carry out external logic control.
On described banked direction control valves, the oil of P mouth replicates valve 4 by pressure all the time and flows to LS mouth, improves the response speed of system.
Pass to the LS signal fluid of pump from the P mouth of banked direction control valves, do not consume the fluid in actuator port.
Replicate, by pressure, the load signal that valve obtains, logic control can be carried out, do not affect load signal.
By pressure replicate valve take out load signal, elimination system when the improvement stage starts, the trace of load pressure
Decline.
When banked direction control valves does not operates, now load signal PL is zero, acts on pressure and replicates LS mouth and the P mouth of spool 7 left end
Communicating, pressure duplication spool 7, under LS pressure effect, overcomes back-moving spring 8 to move right, closes P mouth and LS mouth, simultaneously LS mouth
Connecting with PL mouth, LS mouth pressure reduces to zero.
During banked direction control valves operation, now fetching maximum load pressure signal P L in road, pressure replicates spool 7 in PL pressure effect
Under be moved to the left, pressure replicates valve P mouth and LS mouth and connects, and replicates spool 7 by pressure and adjust opening of P mouth and LS mouth in real time
Mouth amount, makes P mouth pressure reduce to LS pressure, acts on pressure and replicates the left end of spool 7, when LS pressure is equal with PL pressure, now
Pressure replicates spool 7 and keeps dynamic balance state, moment to make 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
Put, compact conformation, not only meet the pressure needed for operating mechanism and flow, and the flow of actuator port can be made full use of,
Also load signal logical design be can be carried out, response speed and the power conservation requirement of banked direction control valves improved further.
The components such as the valve not making specified otherwise in the present invention are prior art.
Claims (4)
1. one kind has the load-sensitive proportional multi-way valve that load pressure replicates, it is characterised in that: include main valve (1), shuttle valve
(2), pressure-compensated valve (3), pressure replicate valve (4), guide's air relief valve (5) and main safety valve (6), described pressure-compensated valve (3),
Pressure replicates the oil-in of valve (4), guide's air relief valve (5) and main safety valve (6) and is connected to P mouth, the outlet of pressure-compensated valve (3)
Import with main valve (1) is connected, and the oil-out of guide's air relief valve (5) is connected to Z mouth, and the oil-out of main safety valve (6) is connected to T
Mouthful, the load signal of main valve (1) oil-out enters shuttle valve (2), the output loading signal PL of shuttle valve (2) by valve core inside oil duct
Acting on pressure and replicate the spool right-hand member of valve (4), P mouth pressure oil acts on pressure after pressure replicates valve (4) decompression and replicates valve
(4) spool left end, replicating valve (4) post-decompression signal through pressure is the LS signal passing to pump.
The most according to claim 1 have the load-sensitive proportional multi-way valve that load pressure replicates, it is characterised in that: described
It is hydraulically-controlled type proportioning valve that pressure replicates valve (4), and pressure replicates the spool two ends area equation of valve (4), and it is right that pressure replicates valve core
End is provided with back-moving spring (8).
The most according to claim 2 have the load-sensitive proportional multi-way valve that load pressure replicates, it is characterised in that: described
Pressure replicates valve (4), guide's air relief valve (5) and main safety valve (6) and is integrated on the import sheet of banked direction control valves.
The most according to claim 3 have the load-sensitive proportional multi-way valve that load pressure replicates, it is characterised in that multichannel
The concrete control process of valve is:
Load signal at main valve (1) oil-out A or B enters shuttle valve (2) by valve core inside oil duct, by shuttle valve (2) with front
The load signal of one-level compares, and the load signal PL after comparing acts on pressure and replicates spool (7) right-hand member, makes pressure replicate
Spool (7) is moved to the left under PL pressure effect, and pressure replicates the P mouth of valve (4) and connects with LS mouth；
Replicate spool (7) by pressure and adjust the opening amount of P mouth and LS mouth in real time, make P mouth pressure decline and act on pressure again
Spool processed (7) left end, replicates valve (4) post-decompression pressure signal by pressure and is LS signal；
Replicated the real-time adjustment of spool (7) by pressure, be always ensured that LS signal is equal with load signal PL, replicate valve through pressure
(4) pressure signal transmission replicated is to the LS mouth 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 |
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| CN106122153A true CN106122153A (en) | 2016-11-16 |
| CN106122153B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469825A (en) * | 2020-04-07 | 2020-07-31 | 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 |
| CN113202839A (en) * | 2021-04-13 | 2021-08-03 | 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0251172B1 (en) * | 1986-06-30 | 1993-05-12 | Vickers Incorporated | Hydraulic control system |
| US20070151238A1 (en) * | 2005-12-12 | 2007-07-05 | Linde Aktiengesellschaft | Hydrostatic drive 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 |
-
2016
- 2016-08-31 CN CN201610787641.5A patent/CN106122153B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0251172B1 (en) * | 1986-06-30 | 1993-05-12 | Vickers Incorporated | Hydraulic control system |
| US20070151238A1 (en) * | 2005-12-12 | 2007-07-05 | Linde Aktiengesellschaft | Hydrostatic drive 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469825A (en) * | 2020-04-07 | 2020-07-31 | 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 |
| CN113202839A (en) * | 2021-04-13 | 2021-08-03 | 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 |
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| Publication number | Publication date |
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| CN106122153B (en) | 2018-06-22 |
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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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