CN104179743B - Modular load sensitivity electric-hydraulic proportion banked direction control valves - Google Patents
Modular load sensitivity electric-hydraulic proportion banked direction control valves Download PDFInfo
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- CN104179743B CN104179743B CN201410377260.0A CN201410377260A CN104179743B CN 104179743 B CN104179743 B CN 104179743B CN 201410377260 A CN201410377260 A CN 201410377260A CN 104179743 B CN104179743 B CN 104179743B
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Abstract
The present invention relates to a kind of sensitive electric-hydraulic proportion banked direction control valves of modular load, including load-sensitive modular pressure, proportional control valve pilot control module, Logic control module, ratio inverting module, proportion pilot control module, multiple major loop functional control modules and connection and interconnecting module, the load-sensitive modular pressure is used for the oil sources for controlling the sensitive electric-hydraulic proportion banked direction control valves of whole modular load, it includes overflow valve, #1 choke valves, #2 stop valves and the first pilot-type relief valve, the proportional control valve pilot control module is connected with external pilot control oil sources for providing pilot control to the sensitive electric-hydraulic proportion banked direction control valves of the modular load, the Logic control module includes multiple logic control valves, the ratio inverting module includes the hydraulic control guide proportional valve or solenoid-operated proportional reversal valve with the Logic control module respective amount.The beneficial effects of the present invention are there is provided it is a kind of be easily installed maintenance, it is simple in construction, integrated, can combo, open and energy-conservation the sensitive electric-hydraulic proportion banked direction control valves of modular load.
Description
Technical field
The present invention relates to a kind of multi-way control valve, more particularly to a kind of sensitive electric-hydraulic proportion banked direction control valves of modular load.
Background technology
At present, traditional proportional multi-path control valve, general utility functions are standards, and the flow of such as same group valve is usually one
Fixed scope, control form, which is once decided, also to be difficult to change, variable pump load sensing circuit valve and constant displacement pump open circuit valve
Function can not typically be changed, and can not add on major loop can not realize different valve group interflow function in the duty valves such as hydraulic lock, valve；Separately
Outside, load percentage function and regular tap energy supply valve can not be concatenated.
The content of the invention
In view of the above-mentioned problems in the prior art, it is a primary object of the present invention to solve the defect of prior art,
The present invention provide it is a kind of be easily installed maintenances, it is simple in construction, integrated and energy-conservation modular load sensitivity electric-hydraulic proportion it is many
Road valve.
The invention provides a kind of sensitive electric-hydraulic proportion banked direction control valves of modular load, including：
Load-sensitive modular pressure, the load-sensitive modular pressure is used to control whole modular load sensitive electrical liquor ratio
The oil sources of example banked direction control valves, it includes overflow valve, #1 choke valves, #2 stop valves and the first pilot-type relief valve, the overflow valve
Oil inlet is connected in parallel to P mouthfuls and MP mouthfuls respectively, the MP mouthfuls of external pressure gauge, and the oil-out of the overflow valve is connected in parallel to T mouthfuls, described
The oil inlet of first pilot-type relief valve is connected by #1 choke valves with the oil inlet of the overflow valve, and first type pilot overflows
The oil inlet of stream valve is connected in parallel to LS mouthfuls by #2 stop valves, and the oil-out of first pilot-type relief valve is connected in parallel to the overflow
The oil-out of valve, Z mouthfuls are used for external control oil sources, when external oil sources is load-reacting pump, the #1 choke valves connection
The #2 stop valves are blocked simultaneously, and LS mouthful are connected with the load-sensitive of variable pump mouth, P mouthfuls with the pressure oil port phase of the variable pump
Even, T mouthful are connected with oil return system, T1 mouthfuls unloading port and to be connected with oil return box, when external oil sources is load-sensitive constant displacement pump,
The #1 choke valves block the #2 stop valves connection simultaneously, and described LS mouthfuls is blocked；
Proportional control valve pilot control module, the proportional control valve pilot control module controls oil sources phase with external pilot
It is used in conjunction in providing pilot control, the proportional control valve pilot control mould to the sensitive electric-hydraulic proportion banked direction control valves of the modular load
The A mouths of block are connected in parallel to Z mouthfuls, and T mouthfuls are connected in parallel to T1 mouthfuls, and B mouthfuls are connected in parallel to LS mouthfuls and are used to detect the modular load sensitive electrical liquor ratio
The total LS feedback pressures of example banked direction control valves；
Logic control module, the Logic control module includes multiple proportional control valves, and the multiple proportional control valve is
First proportional control valve and the second proportional control valve, first proportional control valve and second proportional control valve include the
The logical pressure-compensated valve of two pilot-type relief valves, LS shuttle valves and two, described two logical pressure-compensated valves are used in load pressure or fuel feeding
Make executing agency's flow constant constant during pressure change, the oil inlets of described two logical pressure-compensated valves are connected in parallel to P mouthfuls, described
The oil return opening of LS shuttle valves is connected in the oil return openings of LS shuttle valves in LS mouthfuls, second proportional control valve and is connected in first proportional control valve
An oil inlet of LS shuttle valves in first proportional control valve, a hydraulic fluid port, second type pilot of described two logical pressure-compensated valves overflow
The oil inlet parallel connection of the oil inlet and LS shuttle valves of valve is flowed, the oil return opening of second pilot-type relief valve is connected in parallel to T1 mouthfuls,
An oil inlet of LS shuttle valves is connected in LS mouthfuls in second proportional control valve；
Proportion pilot control module, the proportion pilot control module includes multiple proportion pilot control valves, the multiple
Proportion pilot control valve is the first proportion pilot control valve and the second proportion pilot control valve, the first proportion pilot control valve
It is one kind in hydraulic control proportion pilot control valve or automatically controlled proportion pilot control valve with the second proportion pilot control valve, it is described
Hydraulic control proportion pilot control valve and automatically controlled proportion pilot control valve are interchangeable as needed；
Ratio inverting module, the ratio inverting module includes the hydraulic control guide with the Logic control module respective amount
Proportional reversing valve or solenoid-operated proportional reversal valve, including the first hydraulic control proportional reversing valve and the second hydraulic control proportional reversing valve, described
The a mouths of one proportion pilot control module are connected with the left pilot port of the first hydraulic control proportional reversing valve, and first ratio is first
The b mouths for leading control module are connected with the right pilot port of the first hydraulic control proportional reversing valve, and second proportion pilot controls mould
The a mouths of block are connected with the left pilot port of the second hydraulic control proportional reversing valve, the b mouths of the second proportion pilot control module with
The right pilot port of the second hydraulic control proportional reversing valve is connected, described first hydraulic control proportional reversing valve, two hydraulic fluid ports respectively with T
Mouth and T1 mouthfuls of connected, the oil return opening phases of a hydraulic fluid port of the first hydraulic control proportional reversing valve and described two logical pressure-compensated valves
Even；
Multiple major loop functional control modules, the multiple major loop control module is the first major loop control module and the
Two major loop control modules, two hydraulic fluid ports of the first major loop control module are connected in parallel to T mouthfuls, second major loop respectively
Two hydraulic fluid ports of control module are connected in parallel to T mouthfuls respectively, the A1 mouths of the first major loop control module and B1 mouthfuls respectively with it is described
Two hydraulic fluid ports of the first hydraulic control proportional reversing valve are connected, the A2 mouths of the second major loop control module and B2 mouthfuls respectively with institute
Two hydraulic fluid ports for stating the second hydraulic control proportional reversing valve are connected；And
Connection and interconnecting module, the connection and interconnecting module include valve and the changeover valve for different latus rectum valve groups of transferring
Block, when front and rear valve group flow difference it is larger when by the changeover valve block carry out transition, by described P mouthfuls, T mouthfuls, LS mouthfuls, T1 mouthfuls with
And Z mouthfuls be transitioned into rear valve block group.
Optionally, the load-sensitive modular pressure, proportional control valve pilot control module, Logic control module, ratio
Inverting module, proportion pilot control module, major loop functional control module and connection and interconnecting module become one.
Optionally, described T mouthfuls includes the first T mouthful and the 2nd T mouthful, the described first T mouthfuls for commonly using, the described 2nd T mouthfuls use
In standby.
Optionally, described P mouthfuls includes the first P mouthful and the 2nd P mouthful, the described first P mouthfuls for commonly using, the described 2nd P mouthfuls use
In standby.
The present invention has advantages below and beneficial effect：The sensitive electro-hydraulic proportional multi-way of modular load that the present invention is improved
Valve, realize multiple different pressures flows loop can while work, and under different scaling signal control, each loop that
This is independent of each other and realizes different circuit assignment of traffic in proportion, and is controlled by LS feedback pressure signals to load-reacting pump
The constant-pressure variable pressure spot of pump, so that the flow that the output system of controlling pump needs is realized, or specified rate pumping system feedback pressure
Oil pressure relief of the signal to load-sensitive pressure valve dynamic control valve, realizes the purpose for saving power, i.e. system need how much work(
Rate by LS feed back it is proportional be supplied to system, or low pressure spill, excessive thermal power loss is not produced.Pass through modular knot
Structure, we can realize that multiloop of the banked direction control valves proportional flow from 400L/min to 2L/min is mixed and concatenate at present, pass through function
The extension of module, it is possible to achieve ratio is collaborated in double pump and many pump valves, realizes the mixed of proportional control valve group and common commutation valve group
Ride in same banked direction control valves, integrated single or double balanced valve and hydraulic lock equivalent type valve member on valve block major loop.
Brief description of the drawings
Fig. 1 is the theory diagram of the sensitive electric-hydraulic proportion banked direction control valves of modular load of the embodiment of the present invention；
Fig. 2 is the theory diagram of load-sensitive modular pressure in Fig. 1；
Fig. 3 is the theory diagram of proportional control valve pilot control module in Fig. 1；
Fig. 4 is the theory diagram of major loop functional control module in Fig. 1；
Fig. 5 is the theory diagram of connection and interconnecting module in Fig. 1.
Embodiment
The present invention is further illustrated with specific embodiment below with reference to accompanying drawings.
As shown in Figure 1：A kind of sensitive electric-hydraulic proportion banked direction control valves of modular load of the embodiment of the present invention, including：
Load-sensitive modular pressure 1, the load-sensitive modular pressure 1 is used to control whole modular load sensitivity electro-hydraulic
The oil sources of proportional multi-way valve, overflows as shown in Fig. 2 it includes overflow valve 11, #1 choke valves 13, the type pilot of #2 stop valves 14 and first
Valve 12 is flowed, the oil inlet of the overflow valve 11 is connected in parallel to P mouthfuls and MP mouthfuls, the MP mouthfuls of external pressure gauge, the overflow valve respectively
Oil-out be connected in parallel to T mouthfuls, the oil inlet of first pilot-type relief valve passes through the oil-feed of #1 choke valves and the overflow valve
Mouth is connected, and the oil inlet of first pilot-type relief valve is connected in parallel to LS mouthfuls, the first type pilot overflow by #2 stop valves
The oil-out of valve is connected in parallel to the oil-out of the overflow valve, and Z mouthfuls are used for external control oil sources, when external oil sources becomes for load-sensitive
When measuring pump, the #2 stop valves are blocked simultaneously for the #1 choke valves connection, and LS mouthfuls are connected with the load-sensitive mouthful of variable pump, P mouthfuls
It is connected with the pressure oil port of the variable pump, T mouthfuls are connected with oil return system, T1 mouthfuls are unloading port and to be connected with oil return box, when outer
When connecing oil sources for load-sensitive constant displacement pump, the #1 choke valves block the #2 stop valves connection simultaneously, and described LS mouthfuls is blocked；Institute
The plug with throttle orifice can be installed additional to reduce system pressure fluctuation by stating in the middle of LS oil circuits and T1 oil circuits；First type pilot overflows
It is the maximum by flow of whole valve set system to flow the flow in valve, by installing different damping, it is possible to achieve variable pump load
Conversion between sensory system and constant displacement pump load sensitive system；LS ', P ', T ', T1 ' in the load-sensitive modular pressure 1 and
Z ' hydraulic fluid ports are connected with Logic control module respectively, A, P, T and B hydraulic fluid port in the load-sensitive modular pressure 1 respectively with ratio
Control valve pilot control module 2 is connected；
Proportional control valve pilot control module 2, the proportional control valve pilot control module 2 controls oil sources with external pilot
It is connected for providing pilot control, the proportional control valve pilot control to the sensitive electric-hydraulic proportion banked direction control valves of the modular load
The A mouths of module are connected in parallel to Z mouthfuls, and T mouthfuls are connected in parallel to T1 mouthfuls, and B mouthfuls are connected in parallel to LS mouthfuls and are used to detect that the modular load sensitivity is electro-hydraulic
The total LS feedback pressures of proportional multi-way valve；As shown in figure 3, a is cover plate in Fig. 3, it is connected with the load-sensitive modular pressure 1,
B is the guide's decompression oil circuit module for installing filter additional in Fig. 3, can be provided for the sensitive electric-hydraulic proportion banked direction control valves of the modular load
C is an outer oil supply source decompression oil circuit module in pilot control, Fig. 3, and extraordinary pressure oil-source can be provided for brake etc.；
Logic control module, the Logic control module includes multiple proportional control valves, and the multiple proportional control valve is
First proportional control valve 301 and the second proportional control valve 302, first proportional control valve 301 and second ratio control
Valve 302 includes the second pilot-type relief valve, LS shuttle valves and two logical pressure-compensated valves, and described two logical pressure-compensated valves are used for negative
Make executing agency's flow constant constant when carrying pressure or charge oil pressure change, the oil inlet of described two logical pressure-compensated valves is simultaneously
The oil return opening for being coupled to LS shuttle valves in P mouthfuls, first proportional control valve is connected in LS shuttle valves in LS mouthfuls, second proportional control valve
Oil return opening be connected in an oil inlet of LS shuttle valves in the first proportional control valve, it is a hydraulic fluid port of described two logical pressure-compensated valves, described
The oil inlet of second pilot-type relief valve and an oil inlet of LS shuttle valves are in parallel, the oil return opening of second pilot-type relief valve
The oil inlet for being connected in parallel to LS shuttle valves in T1 mouthfuls, second proportional control valve is connected in LS mouthfuls；On the Logic control module
LS mouthfuls can load onto the real-time maximum pressure that pressure gauge is used to detect this control module loop, while matching somebody with somebody with the second pilot-type relief valve
Close the highest pressure limiting for adjusting this loop；
Proportion pilot control module, the proportion pilot control module includes multiple proportion pilot control valves, the multiple
Proportional control valve is the first proportion pilot control valve 501 and the second proportion pilot control valve 502, the first proportion pilot control
Valve 501 and the second proportion pilot control valve 502 is in hydraulic control proportion pilot control valves or automatically controlled proportion pilot control valve
One kind, the hydraulic control proportion pilot control valve and automatically controlled proportion pilot control valve are interchangeable as needed, and installation dimension is one
Sample, improve the interchangeability of the banked direction control valves；
Ratio inverting module, the ratio inverting module includes the hydraulic control guide with the Logic control module respective amount
Proportional reversing valve or solenoid-operated proportional reversal valve, the ratio inverting module specifically may include the He of the first hydraulic control proportional reversing valve 401
Second hydraulic control proportional reversing valve 402, a mouths of the first proportion pilot control module 501 commutate with the first hydraulic control ratio
The left pilot port of valve 401 is connected, b mouths and the first hydraulic control proportional reversing valve of the first proportion pilot control module 501
401 right pilot port is connected, a mouths of the second proportion pilot control module 502 and the second hydraulic control proportional reversing valve 402
Left pilot port be connected, the b mouths of the second proportion pilot control module 502 and the second hydraulic control proportional reversing valve 402
Right pilot port is connected, and two hydraulic fluid ports of the first hydraulic control proportional reversing valve 401 are connected with T mouthfuls and T1 mouthfuls respectively, and described the
One hydraulic fluid port of one hydraulic control proportional reversing valve 401 is connected with the oil return opening of described two logical pressure-compensated valves；By to left pilot port
Controlled with the electric ratio of right pilot port or manual liquid proportional, realize the proportional flow commutation control of P mouthfuls to A mouthfuls or B mouthfuls, control pressure
Power is 5bar~18bar；
Multiple major loop functional control modules, the multiple major loop control module is the first major loop control module 601
With the second major loop control module 602, two hydraulic fluid ports of the first major loop control module 601 are connected in parallel to T mouthfuls respectively, described
Two hydraulic fluid ports of the second major loop control module 602 are connected in parallel to T mouthfuls, the A1 mouths and B1 of the first major loop control module respectively
Mouthful be connected respectively with two hydraulic fluid ports of the first hydraulic control proportional reversing valve, the A2 mouths of the second major loop control module with
B2 mouthfuls are connected with two hydraulic fluid ports of the second hydraulic control proportional reversing valve respectively；As shown in figure 4, a is theory diagram in figure, wherein
See for A mouthfuls and B mouthfuls and be directly connected with driving element, in figure b be installed additional on major loop c in the theory diagram of overload valve, figure be
It is the theory diagram for installing double balanced valves additional in major loop to install d in the theory diagram of hole valve, figure in major loop additional, may be used also in addition
To install the control valves such as hydraulic control one-way valve additional；And
Connection and interconnecting module 7, the connection and interconnecting module include valve and the switching for different latus rectum valve groups of transferring
Valve block, carries out transition, by described P mouthfuls, T mouthfuls, LS mouthfuls, T1 mouthfuls when front and rear valve group flow difference is larger by the changeover valve block
And Z mouthfuls be transitioned into rear valve block group, as shown in figure 5, a is the switching that b is different latus rectum valve groups in cover plate theory diagram, figure in figure
Valve block, can carry out transition by changeover valve block when front and rear valve group flow difference is larger, P, T, LS, TI and Z mouthfuls are transitioned into
Valve group below, the close valve group of flow can pass through fabrication hole and realize switching without changeover valve block.
It is used as the preferred embodiment of above-described embodiment, the load-sensitive modular pressure, proportional control valve pilot control
Module, Logic control module, ratio inverting module, proportion pilot control module, major loop functional control module and connection and turn
Connection module becomes one.
As the preferred embodiment of above-described embodiment, described T mouthfuls include the first T mouthful with the 2nd T mouthfuls, the described first T mouthfuls
For commonly using, the described 2nd T mouthfuls be used for it is standby.
As the preferred embodiment of above-described embodiment, described P mouthfuls include the first P mouthful with the 2nd P mouthfuls, the described first P mouthfuls
For commonly using, the described 2nd P mouthfuls be used for it is standby.
Finally it should be noted that：Above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or substitutions, the essence of appropriate technical solution is departed from various embodiments of the present invention technical side
The scope of case.
Claims (4)
1. a kind of sensitive electric-hydraulic proportion banked direction control valves of modular load, it is characterised in that including：
Load-sensitive modular pressure, the load-sensitive modular pressure is used to control the sensitive electric-hydraulic proportion of whole modular load many
The oil sources of road valve, it includes overflow valve, #1 choke valves, #2 stop valves and the first pilot-type relief valve, the oil-feed of the overflow valve
Mouth is connected in parallel to P mouthfuls and MP mouthfuls respectively, and the MP mouthfuls of external pressure gauge, the oil-out of the overflow valve is connected in parallel to T mouthfuls, described first
The oil inlet of pilot-type relief valve is connected by #1 choke valves with the oil inlet of the overflow valve, first pilot-type relief valve
Oil inlet be connected in parallel to LS mouthfuls by #2 stop valves, the oil-out of first pilot-type relief valve is connected in parallel to the overflow valve
Oil-out, Z mouthfuls are used for external control oil sources, when external oil sources is load-reacting pump, and the #1 choke valves connection is simultaneously
The #2 stop valves are blocked, and LS mouthfuls are connected with the load-sensitive mouthful of variable pump, and P mouthfuls are connected with the pressure oil port of the variable pump, T
Mouthful be connected with oil return system, T1 mouthfuls are connected for unloading port and with oil return box, when external oil sources is load-sensitive constant displacement pump, institute
State #1 choke valves and block the #2 stop valves connection simultaneously, described LS mouthfuls is blocked；
Proportional control valve pilot control module, the proportional control valve pilot control module is mutually used in conjunction with external pilot control oil sources
In providing pilot control to the sensitive electric-hydraulic proportion banked direction control valves of the modular load, the proportional control valve pilot control module
A mouthfuls are connected in parallel to Z mouthfuls, and T mouthfuls are connected in parallel to T1 mouthfuls, and B mouthfuls are connected in parallel to LS mouthfuls and are used to detect that the sensitive electric-hydraulic proportion of the modular load is more
The total LS feedback pressures of road valve；
Logic control module, the Logic control module includes multiple logic control valves, and the multiple logic control valve is two
Proportional control valve, described two proportional control valves are the first proportional control valve and the second proportional control valve and include the second guide
The logical pressure-compensated valve of type overflow valve, LS shuttle valves and two, described two logical pressure-compensated valves are used to become in load pressure or charge oil pressure
Hua Shishi executing agencies flow constant is constant, and the oil inlet of described two logical pressure-compensated valves is connected in parallel to P mouthfuls, first ratio
The oil return opening of LS shuttle valves is connected in the oil return openings of LS shuttle valves in LS mouthfuls, second proportional control valve and is connected in the first ratio in example control valve
First oil inlet of LS shuttle valves in example control valve, a hydraulic fluid port of two logical pressure-compensated valves described in first proportional control valve,
The oil inlet of second pilot-type relief valve and the second oil inlet of LS shuttle valves are in parallel, institute in second proportional control valve
State the second oil inlet of a hydraulic fluid port, the oil inlet of second pilot-type relief valve and LS shuttle valves of two logical pressure-compensated valves simultaneously
Connection, the oil return opening of second pilot-type relief valve is connected in parallel to first of LS shuttle valves in T1 mouthfuls, second proportional control valve and entered
Hydraulic fluid port is connected in LS mouthfuls；
Proportion pilot control module, the proportion pilot control module includes multiple proportion pilot control valves, the multiple ratio
Pilot-actuated valve is the first proportion pilot control valve and the second proportion pilot control valve, the first proportion pilot control valve and institute
It is one kind in hydraulic control proportion pilot control valve or automatically controlled proportion pilot control valve, the hydraulic control to state the second proportion pilot control valve
Proportion pilot control valve and automatically controlled proportion pilot control valve are interchangeable as needed；
Ratio inverting module, the ratio inverting module includes and the corresponding number of hydraulic control pilot ratio of the Logic control module
Example reversal valve, including the first hydraulic control guide proportion reversal valve and the second hydraulic control guide proportion reversal valve, first proportion pilot
The a mouths of control valve are connected with the left pilot port of the first hydraulic control guide proportion reversal valve, the first proportion pilot control valve
B mouths be connected with the right pilot port of the first hydraulic control guide proportion reversal valve, a mouths of the second proportion pilot control valve with
The left pilot port of the second hydraulic control guide proportion reversal valve is connected, b mouths of the second proportion pilot control valve and described the
The right pilot ports of two hydraulic control guide proportion reversal valves is connected, described first hydraulic control guide proportion reversal valve, two hydraulic fluid ports respectively with T
Mouthful and T1 mouthful be connected, in another hydraulic fluid port of the first hydraulic control guide proportion reversal valve and first proportional control valve
The oil return opening of two logical pressure-compensated valves is connected；
Multiple major loop functional control modules, the multiple major loop control module is the first major loop control module and the second master
Circuit control module, two hydraulic fluid ports of the first major loop control module are connected in parallel to T mouthfuls, the second major loop control respectively
Two hydraulic fluid ports of module are connected in parallel to T mouthfuls respectively, and the A1 mouths of the first major loop control module and B1 mouthfuls are respectively with described first
The another two hydraulic fluid port of hydraulic control guide proportion reversal valve is connected, the A2 mouths of the second major loop control module and B2 mouthfuls respectively with institute
Two hydraulic fluid ports for stating the second hydraulic control guide proportion reversal valve are connected；And
Connection and interconnecting module, the connection and interconnecting module include valve and the changeover valve block for different latus rectum valve groups of transferring,
Transition is carried out by the changeover valve block when front and rear valve group flow difference is larger, by described P mouthfuls, T mouthfuls, LS mouthfuls, T1 mouthfuls and Z
Mouth is transitioned into rear valve block group.
2. the sensitive electric-hydraulic proportion banked direction control valves of modular load according to claim 1, it is characterised in that the load-sensitive
Modular pressure, proportional control valve pilot control module, Logic control module, ratio inverting module, proportion pilot control module, master
Return circuit control module and connection and interconnecting module become one.
3. the sensitive electric-hydraulic proportion banked direction control valves of modular load according to claim 1, it is characterised in that described T mouthfuls includes
First T mouthfuls and the 2nd T mouthful, the described first T mouthful for commonly using, the described 2nd T mouthfuls for standby.
4. the sensitive electric-hydraulic proportion banked direction control valves of modular load according to claim 1, it is characterised in that described P mouthfuls includes
First P mouthfuls and the 2nd P mouthful, the described first P mouthful for commonly using, the described 2nd P mouthfuls for standby.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410377260.0A CN104179743B (en) | 2014-08-04 | 2014-08-04 | Modular load sensitivity electric-hydraulic proportion banked direction control valves |
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| CN201410377260.0A CN104179743B (en) | 2014-08-04 | 2014-08-04 | Modular load sensitivity electric-hydraulic proportion banked direction control valves |
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| CN104179743B true CN104179743B (en) | 2017-09-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107762995B (en) * | 2017-09-13 | 2023-12-22 | 江苏恒立液压科技有限公司 | Novel electric proportion overflow device |
| CN108412829B (en) * | 2018-04-09 | 2022-02-11 | 徐州燕大传动与控制技术有限公司 | Load sensitive type multi-way valve with independently adjustable inlet and outlet throttling edges |
| CN114263644B (en) * | 2021-12-27 | 2024-02-27 | 徐工集团工程机械股份有限公司道路机械分公司 | Oil supply control valve group for steering gear |
| CN115681262B (en) * | 2022-10-27 | 2023-06-20 | 华东交通大学 | Load-sensitive electrohydraulic conversion oil inlet module |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3603630A1 (en) * | 1986-02-06 | 1987-08-13 | Rexroth Mannesmann Gmbh | Control arrangement for at least two hydraulic consumers fed by at least one pump |
| DE3703576A1 (en) * | 1987-02-06 | 1988-08-18 | Rexroth Mannesmann Gmbh | Control arrangement for at least two hydraulic consumers fed by at least one pump |
| US5193342A (en) * | 1992-02-14 | 1993-03-16 | Applied Power Inc. | Proportional speed control of fluid power devices |
| CN102062127B (en) * | 2011-02-02 | 2012-11-28 | 卢宇 | Proportional control multiway valve |
| CN202690564U (en) * | 2012-08-02 | 2013-01-23 | 徐州徐工液压件有限公司 | Modular design based load-sensitive multi-way reversing valve with pressure compensation |
| CN102927071B (en) * | 2012-11-14 | 2015-08-26 | 中煤科工集团重庆研究院有限公司 | Drill loader hydraulic pressure anti-sticking pricker control system |
| CN203114764U (en) * | 2012-12-27 | 2013-08-07 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Load-sensitive electro-hydraulic proportional multi-way valve |
| CN203978980U (en) * | 2014-08-04 | 2014-12-03 | 北京安宝瑞力液压机电设备有限公司 | The responsive electro-hydraulic proportional multi-way valve of modular load |
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2014
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