CN205779974U - A kind of novel electro-hydraulic proportional multi-way valve - Google Patents
A kind of novel electro-hydraulic proportional multi-way valve Download PDFInfo
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- CN205779974U CN205779974U CN201620471437.8U CN201620471437U CN205779974U CN 205779974 U CN205779974 U CN 205779974U CN 201620471437 U CN201620471437 U CN 201620471437U CN 205779974 U CN205779974 U CN 205779974U
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Abstract
This utility model patent relates to hydraulic components of construction machinery technical field, it is specifically related to a kind of simple in construction, and have more the novel electro-hydraulic proportional multi-way valve of fretting performance, including oil-feed valve block and oil return valve block, between described oil-feed valve block and oil return valve block, it is arranged at intervals with multiple work valve block one and work valve block two；Described oil-feed valve block, work valve block one, work valve block two and oil return valve block all include valve body, oil duct and compensating spool；The valve body both sides of described work valve block one are respectively arranged with end cap, are provided with valve rod in the valve body of work valve block one, and the two ends of valve rod extend in end cap, and valve rod forms lid chamber with end cap；Being provided with proportional solenoid on the valve body of described work valve block one, the pressure reduction that the guide oil oil-in on the spool of proportional solenoid and guide oil oil return opening are formed is guided to lid intracavity and is promoted valve rod to realize commutation function；Described work valve block two is the work valve block one being provided with overload oil compensating valve；It is provided with shuttle valve between described work valve block one and work valve block two.
Description
Technical field
This utility model patent relates to hydraulic components of construction machinery technical field, is specifically related to a kind of novel electricity
Liquid proportional banked direction control valves.
Background technology
Hydraulic multitandem valve is proposed in terms of automatization, precision, response speed by the development of modern industry
The highest requirement.Current domestic various hydraulic multitandem valves belong to traditional center of opening choke valve more, it
Control starting point relevant with the change of load with speed adjustable range, when two and above mechanism work simultaneously, exist
Influencing each other, the mechanism speed i.e. with higher load may diminish the most motionless, and mode of operation is main simultaneously
For manually controlling two kinds with surging, the mode of Non-follow control is to use stick directly will handle position by connecting rod
Transfer is changed to control the displacement of valve rod；The mode controlled of surging is to use hydraulic control pilot handle pressure output control,
By oil piping system transmission pressure to controlling valve rod, and then valve rod is produced displacement by force unbalance；Both the above
Mode, control signal is long to the circuit controlling valve rod transmission so that the fine motion characteristic of banked direction control valves is poor, output
Flow cannot be formed with the stroke change of valve rod and mate, and operating characteristics is not good enough.
Summary of the invention
In order to overcome defect of the prior art, the purpose of this utility model is to provide a kind of simple in construction,
And have more the novel electro-hydraulic proportional multi-way valve of fretting performance.
The purpose of this utility model is achieved in that
A kind of novel electro-hydraulic proportional multi-way valve, including oil-feed valve block and oil return valve block, described oil-feed valve block and
Multiple work valve block one and work valve block two it is arranged at intervals with between oil return valve block；Described oil-feed valve block, work
Valve block one, work valve block two and oil return valve block all include valve body, oil duct and compensating spool；Described work valve block
The valve body both sides of one are respectively arranged with end cap, are provided with valve rod, the two ends of valve rod in the valve body of work valve block one
Extending in end cap, valve rod forms lid chamber with end cap；Ratio electricity it is provided with on the valve body of described work valve block one
Magnet valve, the pressure reduction that the guide oil oil-in on the spool of proportional solenoid and guide oil oil return opening are formed guides to lid
Intracavity promotes valve rod to realize commutation function；Described work valve block two is the work valve block being provided with overload oil compensating valve
One；It is provided with shuttle valve between described work valve block one and work valve block two.
This utility model is further arranged to: be provided with unloader, pump oil inlet P, EF on described oil-feed valve block
Oil duct I, feedback port one and back oil road；Described EF oil duct I communicates with work valve block one, two, feedback port
One communicates with system feedback oil circuit, and back oil road is connected with work valve block one, two.
This utility model is further arranged to: be provided with feedback cavity in the valve body of described oil-feed valve block, described instead
Feedback mouth one is positioned at described feedback cavity, and the spool of described unloader passes back oil road and EF oil duct I and extends to
In feedback cavity, being provided with spring one in described feedback cavity, one end of described spring one abuts with feedback cavity, bullet
The other end of spring one abuts with the spool of unloader, makes spring one form precompression.
This utility model is further arranged to: is provided with EF oil duct II, spring two on described oil return valve block and subtracts
Pressure valve, the spool of described air relief valve extends in the oil duct of oil return valve block, one end of spring two and EF oil duct II
Abutting, the other end of spring two abuts with the spool of air relief valve, makes spring two form precompression.
This utility model is further arranged to: be provided with work oil duct, EF on the valve body of described work valve block one
Oil duct III and feedback port two, described compensating spool is through work oil duct and extends in EF oil duct III, institute
The lower end stating compensating spool is provided with spring three.
This utility model is prominent and useful compared to existing technology has the technical effect that fast electricity of this utility model
The advantage that the advantage such as speed, motility is big with hydraulic drive strength combines, can continuously, pari passu
Control the power of actuator movement, speed and direction in hydraulic system, and use load-sensitive and pressure compensation
Technology, the system of simplifying makes it have good flow-control performance so that the speed of actuator and load
Unrelated, as two and above actuator action simultaneously, it is independent of each other, even if in flow saturation,
Still the flow that each mechanism can be made to obtain maintains proportionate relationship.The output flow of banked direction control valves and its spool row
Journey matches, and has good fretting performance.
Accompanying drawing explanation
Fig. 1 is appearance schematic diagram of the present utility model；
Fig. 2 is the structure sectional view of oil-feed valve block of the present utility model；
Fig. 3 is the structure sectional view of utility model works valve block one；
Fig. 4 is the structure sectional view of utility model works valve block two；
Fig. 5 is the A-A sectional view in Fig. 4；
Fig. 6 is the structure sectional view of this utility model oil return valve block；
Fig. 7 is hydraulic principle schematic diagram of the present utility model.
Label implication in figure:
1-oil-feed valve block；11-unloader；12-EF oil duct I；13-feedback port one；14-back oil road；
15-feedback cavity；16-spring one；2-works valve block one；21-works oil duct；22-EF oil duct III；
23-spring three；24-feedback port two；3-works valve block two；4-oil return valve block；41-EF oil duct II；
42-spring two；The spool of 43-air relief valve；The valve pocket of 44-air relief valve；5-end cap；51-lid chamber；
6-valve rod；7-proportional solenoid；71-guide oil oil-in；72-guide oil oil return opening；
8-overload oil compensating valve；9-shuttle valve；10-compensating spool.
Detailed description of the invention
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings:
Seeing shown in Fig. 1 to Fig. 7, a kind of novel electro-hydraulic proportional multi-way valve, including oil-feed valve block 1 with return
Fuel tap sheet 4, is arranged at intervals with multiple work valve block 1 and work between described oil-feed valve block 1 and oil return valve block 4
Make valve block 23；Banked direction control valves in the present embodiment sets gradually from left to right as oil-feed valve block 1, work valve block one
2, work valve block 23, work valve block 1, work valve block 23 and oil return valve block 4；Described oil-feed valve block 1,
Work valve block 1, work valve block 23 and oil return valve block 4 all include valve body, oil duct and compensating spool 10；
The valve body both sides of described work valve block 1 are respectively arranged with end cap 5, are provided with in the valve body of work valve block 1
Valve rod 6, the two ends of valve rod 6 extend in end cap 5, and valve rod 6 and end cap 5 form lid chamber 51；Described work
Make to be provided with on the valve body of valve block 1 proportional solenoid 7, the guide oil oil-in on the spool of proportional solenoid
71 guide to lid chamber 51 interior promotion valve rod 6 with the pressure reduction of guide oil oil return opening 72 formation realizes commutation function；Institute
Stating work valve block 23 is the work valve block 1 being provided with overload oil compensating valve 8；Described work valve block 1 and work
Make to be provided with between valve block 23 shuttle valve 9, when more than 2 valve blocks that work work simultaneously, shuttle valve 9 closing presure
Low feedback port, feedback oil circuit only feeds back maximum working pressure.
It is further arranged to: on described oil-feed valve block 1, be provided with unloader 11, pump oil inlet P, EF oil duct
I12, feedback port 1 and back oil road 14；Described EF oil duct I12 communicates with work valve block one 2, two,
Feedback port 1 communicates with system feedback oil circuit, and back oil road 14 is connected with work valve block one 2, two.
It is further arranged to: in the valve body of described oil-feed valve block 1, be provided with feedback cavity 15, described feedback port one
13 are positioned at described feedback cavity 15, and the spool of described unloader 11 passes back oil road 14 and EF oil duct I12
And extend in feedback cavity 15, it is provided with spring 1, the one of described spring 1 in described feedback cavity 15
End abuts with feedback cavity 15, and the other end of spring 1 abuts with the spool of unloader 11, makes spring 1
Form precompression.
When pump oil inlet P mouth oil-feed, pump oil inlet P connects with EF oil duct I12, and dosing pump carrys out oily entrance
Work system, action of hydraulic force is in the lower end of unloader 11 core simultaneously, overcomes the precompression of spring 1, makes
Unloader 11 core moves up, and EF oil duct I12 and back oil road 14 form certain opening, and the pressure reduction at two ends begins
It is feedback port 1 pressure precompression plus spring 1 eventually；The unnecessary fluid of pump is hence into back oil road 14.
It is further arranged to: on described oil return valve block 4, be provided with EF oil duct II41, spring 2 42 and decompression
Valve, the spool 43 of described air relief valve extends in the oil duct of oil return valve block 4, one end of spring 2 42 and EF
Oil duct II41 abuts, and the other end of spring 2 42 abuts with the spool 43 of air relief valve, makes spring 2 42 shape
Become precompression.
After the fluid of EF oil duct II41 enters, act on spool 43 lower end of air relief valve, overcome spring 2 42
Precompression, make the spool 43 of air relief valve move up, the spool 43 of air relief valve becomes with the valve pocket 44 of air relief valve
Certain opening so that the maximum pressure of guide's oil duct of proportional solenoid 7 is a setting value.
It is further arranged to: on the valve body of described work valve block 1, be provided with work oil duct 21, EF oil duct
III22 and feedback port 2 24, described compensating spool 10 through work oil duct 21 and extends to EF oil duct III22
In, the lower end of described compensating spool 10 is provided with spring 3 23.
When proportion electro-magnet receives the signal of telecommunication, the spool in proportion electro-magnet produces scaling-based shift, guide
Oil oil-in 71 has certain opening with guide oil oil return opening 72 and produces pressure reduction, and pressure is guided to lid chamber 51 and promotes
Valve rod 6 realizes commutation function.When valve rod 6 is in commutation position, fluid from EF oil duct III22 via work
Oil duct 21 enters working hole, working hole pressure by valve rod 6 internal oil channel feed back to feedback port and with system feedback oil
Road communicates；Action of hydraulic force is in the lower end of compensating spool 10 simultaneously, overcomes the precompression of spring 3 23, makes benefit
Repaying spool 10 to move up, EF oil duct III22 forms certain opening with work oil duct 21, the pressure reduction at two ends
Being a definite value, this allows for the flow relation proportional to flow area passed through.So, pass through
Flow is the most relevant to the aperture area of valve rod 6, unrelated with load pressure so that the speed of actuator and stroke
Obtain relation one to one, reach good fretting performance.
Above-described embodiment is only preferred embodiment of the present utility model, limits guarantor of the present utility model the most according to this
Protect scope, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should contain
Within protection domain of the present utility model.
Claims (5)
1. a novel electro-hydraulic proportional multi-way valve, it is characterised in that: include oil-feed valve block and oil return valve block,
Multiple work valve block one and work valve block two it is arranged at intervals with between described oil-feed valve block and oil return valve block；Described
Oil-feed valve block, work valve block one, work valve block two and oil return valve block all include valve body, oil duct and compensating spool；
The valve body both sides of described work valve block one are provided with end cap, are provided with valve rod in the valve body of work valve block one,
The two ends of valve rod extend in end cap, and valve rod forms lid chamber with end cap；Set on the valve body of described work valve block one
Being equipped with proportional solenoid, the guide oil oil-in on the spool of proportional solenoid is formed with guide oil oil return opening
Pressure reduction is guided to lid intracavity and is promoted valve rod to realize commutation function；Described work valve block two is for being provided with overload oil compensating valve
Work valve block one；It is provided with shuttle valve between described work valve block one and work valve block two.
A kind of novel electro-hydraulic proportional multi-way valve the most according to claim 1, it is characterised in that: described
Unloader, pump oil inlet P, EF oil duct I, feedback port one and back oil road it is provided with on oil-feed valve block；Described
EF oil duct I communicates with work valve block one, two, and feedback port one communicates with system feedback oil circuit, back oil road and work
Make valve block one, two connection.
A kind of novel electro-hydraulic proportional multi-way valve the most according to claim 2, it is characterised in that: described
Being provided with feedback cavity in the valve body of oil-feed valve block, described feedback port one is positioned at described feedback cavity, described off-load
The spool of valve passes back oil road and EF oil duct I and extends in feedback cavity, is provided with spring in described feedback cavity
One, one end of described spring one abuts with feedback cavity, and the other end of spring one abuts with the spool of unloader,
Spring one is made to form precompression.
4., according to a kind of novel electro-hydraulic proportional multi-way valve described in claim 1 or 2 or 3, its feature exists
In: being provided with EF oil duct II, spring two and air relief valve on described oil return valve block, the spool of described air relief valve prolongs
Extending in the oil duct of oil return valve block, one end of spring two abuts with EF oil duct II, the other end of spring two with
The spool of air relief valve abuts, and makes spring two form precompression.
5., according to a kind of novel electro-hydraulic proportional multi-way valve described in claim 1 or 2 or 3, its feature exists
In: it is provided with work oil duct, EF oil duct III and feedback port two on the valve body of described work valve block one, described
Compensating spool is through work oil duct and extends in EF oil duct III, and the lower end of described compensating spool is provided with bullet
Spring three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471437.8U CN205779974U (en) | 2016-05-22 | 2016-05-22 | A kind of novel electro-hydraulic proportional multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471437.8U CN205779974U (en) | 2016-05-22 | 2016-05-22 | A kind of novel electro-hydraulic proportional multi-way valve |
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| Publication Number | Publication Date |
|---|---|
| CN205779974U true CN205779974U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620471437.8U Active CN205779974U (en) | 2016-05-22 | 2016-05-22 | A kind of novel electro-hydraulic proportional multi-way valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336149A (en) * | 2020-03-26 | 2020-06-26 | 浙江大学宁波理工学院 | Valve plate of multi-way valve |
| CN112879369A (en) * | 2021-01-25 | 2021-06-01 | 深圳市桑特液压技术有限公司 | Proportional valve control method |
| CN114294284A (en) * | 2021-12-26 | 2022-04-08 | 浙江海宏液压科技股份有限公司 | Working valve plate and electro-hydraulic proportional multi-way valve |
| CN114294281A (en) * | 2021-12-26 | 2022-04-08 | 浙江海宏液压科技股份有限公司 | Working valve plate and electro-hydraulic proportional multi-way valve |
-
2016
- 2016-05-22 CN CN201620471437.8U patent/CN205779974U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336149A (en) * | 2020-03-26 | 2020-06-26 | 浙江大学宁波理工学院 | Valve plate of multi-way valve |
| CN111336149B (en) * | 2020-03-26 | 2021-11-05 | 浙江大学宁波理工学院 | Valve plate of multi-way valve |
| CN112879369A (en) * | 2021-01-25 | 2021-06-01 | 深圳市桑特液压技术有限公司 | Proportional valve control method |
| CN114294284A (en) * | 2021-12-26 | 2022-04-08 | 浙江海宏液压科技股份有限公司 | Working valve plate and electro-hydraulic proportional multi-way valve |
| CN114294281A (en) * | 2021-12-26 | 2022-04-08 | 浙江海宏液压科技股份有限公司 | Working valve plate and electro-hydraulic proportional multi-way valve |
| CN114294284B (en) * | 2021-12-26 | 2024-04-09 | 浙江海宏液压科技股份有限公司 | Working valve plate and electrohydraulic proportional multi-way valve |
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