CN106837907A - Multiple directional control valve - Google Patents
Multiple directional control valve Download PDFInfo
- Publication number
- CN106837907A CN106837907A CN201710041832.1A CN201710041832A CN106837907A CN 106837907 A CN106837907 A CN 106837907A CN 201710041832 A CN201710041832 A CN 201710041832A CN 106837907 A CN106837907 A CN 106837907A
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- China
- Prior art keywords
- valve
- middle position
- oil
- directional control
- valve unit
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of multiple directional control valve, including valve unit, the oil inlet of the valve unit is connected with main oil-feed oil communication, the oil return opening of the reversal valve with main oil return circuit；Hydraulic control middle position unloading valve is provided between the main oil-feed oil circuit and the main oil return circuit, the control port of the hydraulic control middle position unloading valve is connected with the actuator port of the valve unit；In middle position state, oil inlet and the actuator port of the valve unit disconnect.Each action switching of the reversal valve is steady, reliable, and internal structure is simple, and compact conformation, the pressure loss is small, low cost.
Description
Technical field
The present invention relates to hydraulic valve technical field, more particularly to a kind of multiple directional control valve.
Background technology
Harvest machinery is essential equipment in agricultural production, and maize harvesting machine is again most representative in harvest machinery
A kind of equipment, its workpiece is main to be made up of the part such as ear picking bench, chopper, fruit-ear box.Different harvest machinery work
Part is also different, but these workpieces are main to be driven by hydraulic jack.Harvest machinery equipment hydraulic pressure at this stage
System is mainly made up of gear pump, banked direction control valves, hydraulic jack, controls to enter oil cylinder liquid by controlling the manipulation valve rod of banked direction control valves
The direction of force feed, and then control each workpiece of harvest machinery to be performed by compulsory exercise.As harvest machinery is to high-end intelligence
Change direction to develop, the manual complex controll banked direction control valves of equipment electromagnetism shows its exclusive advantage.
Existing harvest machinery equipment system is main to be made up of the part such as gear pump, multichannel valve group, hydraulic jack, wherein
Ear picking bench oil cylinder is acted and then control by solenoid valve control by difference electromagnetic control signal in magnetic valve, controlling corresponding electromagnetism
The moving direction of valve rod processed, realizes that hydraulic jack is performed by compulsory exercise, and other executing agencies are using control reversal valve reality manually
Now performed by compulsory exercise.Board-like electromagnetism being used in current banked direction control valves (such as Fig. 1) use bit serial or compound oil circuit, magnetic valve more
Valve.When reversal valve is in middle position, hydraulic oil, by each mechanical commutation valve T mouthfuls of oil return of middle position oil communication, works as magnetic valve by P mouthfuls
When left side electromagnetism obtains electric, magnetic valve valve rod is moved to left, and P mouthfuls connects A1 mouthful, and B1 mouthful connects T mouthfuls, electromagnetism flow divider while must be electric, makes point
Stream valve is off, and hydraulic oil promotes hydraulic jack to act by actuator port.Magnetic valve valve rod moves to right principle and moves to left
It is identical.
This Method And Principle is complicated at present, and valve group volume is larger, and structure is not compact enough, complicated additionally, due to runner, causes
System effectiveness is relatively low, and the pressure loss is larger, relatively costly, governs hydraulic system using in engineering and agricultural machinery and sends out
Exhibition.
The content of the invention
The technical problems to be solved by the invention are：A kind of multiple directional control valve is provided, the multiple directional control valve is used to solve many
The technical problem of road commutation, each action switching of the multiple directional control valve is steady, reliable, and internal structure is simple, compact conformation, pressure
Lose small, low cost.
In order to solve the above technical problems, the technical scheme is that：A kind of multiple directional control valve, including valve unit,
The oil inlet of the valve unit is connected with main oil-feed oil communication, the oil return opening of the reversal valve with main oil return circuit；Institute
State and hydraulic control middle position unloading valve is provided between main oil-feed oil circuit and the main oil return circuit, the control of the hydraulic control middle position unloading valve
Hydraulic fluid port is connected with the actuator port of the valve unit；In middle position state, the oil inlet and working oil of the valve unit
Mouth disconnects.
As a kind of improved mode, the control of the actuator port of the valve unit and the hydraulic control middle position unloading valve
Check valve is provided between hydraulic fluid port.
As a kind of improved mode, the control of the actuator port of the valve unit and the hydraulic control middle position unloading valve
Shuttle valve is provided between hydraulic fluid port.
Used as a kind of improved mode, the valve unit is three position four-way directional control valve.
Used as a kind of improved mode, the valve unit includes solenoid directional control valve and hand-operated direction valve.
Used as a kind of improved mode, the hydraulic control middle position unloading valve is two position two-way valve.
Used as a kind of improved mode, the hydraulic control middle position unloading valve and the valve unit are arranged at different
In monomer, these monomers inserting links together.
Use the technique effect acquired by above-mentioned technical proposal for：
Using oil circuit in parallel, the structure of middle position unloading valve off-load, the multiple directional control valve is by by valve unit for the present invention
Valve back loading pressure feedback controls the shunting of flow divider to hydraulic control middle position unloading valve, and then controls each execution machine of hydraulic system
The action of structure, it is ensured that each action switching of multiple directional control valve is steady, reliable.The operation principle of the multiple directional control valve and internal stream
Road is simple so that the compact conformation of the valve, the reliable and secure, pressure loss are small and cost-effective, consequently facilitating in engineering and agricultural
Mechanically promoted.The commutation can realize simple load sensitive system, save energy.
Due to being provided between the control port of the actuator port and the hydraulic control middle position unloading valve of the valve unit
Check valve, check valve can prevent hydraulic oil from flowing back to valve unit by middle position unloading valve.
Due to being provided between the control port of the actuator port and the hydraulic control middle position unloading valve of the valve unit
Shuttle valve, shuttle valve can prevent hydraulic oil from flowing back to valve unit by middle position unloading valve.
Because the hydraulic control middle position unloading valve and the valve unit are arranged in different monomers, it is described these
Monomer inserting links together, and can improve the versatility of the multiple directional control valve.
Brief description of the drawings
Fig. 1 is existing banked direction control valves schematic diagram；
The hydraulic schematic diagram of Fig. 2 embodiment of the present invention one；
The outline drawing of Fig. 3 embodiment of the present invention one；
The hydraulic schematic diagram of Fig. 4 embodiment of the present invention two；
In figure, 1- overflow valves, 2- hydraulic control middle position unloading valves, 3- 3-position 4-way manual reverse of direction valve cells, 4- 3-position 4-ways electricity
Magnetic valve unit, 5- check valves, 6- choke valves, 7- shuttle valves.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment one
As shown in Fig. 2 a kind of multiple directional control valve, including three-position four-way electromagnetic directional valve unit 4,3-position 4-way electromagnetic switch
The oil inlet of valve cell 4 connects with main oil-feed oil communication, the oil return opening of three-position four-way electromagnetic directional valve unit 4 with main oil return circuit
It is logical.In middle position state, oil inlet and the actuator port of three-position four-way electromagnetic directional valve unit 4 disconnect.In the present embodiment, three four
The guiding valve performance code name of the operating position function of electric change valve unit 4 is " Y ".
3-position 4-way manual reverse of direction valve cell 3 is in parallel with three-position four-way electromagnetic directional valve unit 4,3-position 4-way manual reverse of direction
The oil inlet of valve cell 3 and main oil-feed oil communication, oil return opening and the main oil return circuit of 3-position 4-way manual reverse of direction valve cell 3 connect
It is logical.In middle position state, oil inlet and the actuator port of 3-position 4-way manual reverse of direction valve cell 3 disconnect.In the present embodiment, three four
The guiding valve performance code name of the operating position function of logical manual reverse of direction valve cell 3 is " Y ".
Hydraulic control middle position unloading valve 2 is provided between main oil-feed oil circuit and main oil return circuit, hydraulic control middle position unloading valve 2 is two
Two-port valve.The control port of hydraulic control middle position unloading valve 2 is connected with the actuator port of three-position four-way electromagnetic directional valve unit 4.Three
Check valve 5 is provided between the control port of the actuator port and hydraulic control middle position unloading valve 2 of four-way electromagnetic reversing valve unit 4.Liquid
The control port of control middle position unloading valve 2 is connected with the actuator port of 3-position 4-way manual reverse of direction valve cell 3.3-position 4-way is changed manually
Check valve 5 is provided between control port to the actuator port and hydraulic control middle position unloading valve 2 of valve cell 3.Hydraulic control middle position off-load
Overflow valve is provided between the oil inlet of valve 2 and main oil return line.Between the control port of hydraulic control middle position unloading valve 2 and main oil return line
It is provided with choke valve 6.
Hydraulic control middle position unloading valve 2, three-position four-way electromagnetic directional valve unit 4 and 3-position 4-way manual reverse of direction valve cell 3 are equal
It is arranged in different monomers, the inserting of these monomers links together and constitutes this multiple directional control valve (as shown in Figure 3), using inserting
Structure can improve the versatility of the multiple directional control valve.
The operation principle of this multiple directional control valve is：
When three-position four-way electromagnetic directional valve unit 4 be in middle position when, actuator port A2, B2 mouthful communicated with T mouthfuls it is non-loaded,
Check valve 5 is failure to actuate, the load-sensing area no pressure of hydraulic control middle position unloading valve 2.Pressure oil is to hydraulic control middle position off-load at oil inlet P
When the pressure that the valve element of valve 2 is produced exceedes the setting value of the spring of hydraulic control middle position unloading valve 2, then the valve of hydraulic control middle position unloading valve 2 can be promoted
Bar is moved right, compression spring, and P mouthfuls is connected by hydraulic control middle position unloading valve 2 with T mouthfuls, pressure oil off-load oil return, and overflow valve rises to be protected
Shield is acted on.
When 4 valve rod side shifting to the left of three-position four-way electromagnetic directional valve unit, P oral fluids force feed enters A2 mouthfuls, B2 mouthfuls and T mouthfuls
Communicate.When A2 mouthfuls of pressure exceedes setting value, check valve 5 is opened, by check valve 5 and the spring cavity phase of hydraulic control middle position unloading valve 2
Logical, now the left chamber hydraulic oil of hydraulic control middle position unloading valve 2 is less than the spring intraluminal fluid of hydraulic control middle position unloading valve 2 to the active force of valve element
Force feed and spring are to the active force sum of valve element, so the valve rod of hydraulic control middle position unloading valve 2 is moved to the left, hydraulic control middle position unloading valve
2 oil circuits are off.Pressure oil controls executing agency after three-position four-way electromagnetic directional valve unit 4.3-position 4-way electromagnetism
The valve rod of valve unit 4 to the right side shifting when, principle with when the valve rod of three-position four-way electromagnetic directional valve unit 4 mobile phase to the left
Together, repeat no more here.
The operation principle of 3-position 4-way manual reverse of direction valve cell 3 and the operation principle of three-position four-way electromagnetic directional valve unit 4
It is similar, repeat no more here.
Embodiment two
Embodiment two is essentially identical with the structure of embodiment one.Difference is：Three-position four-way electromagnetic directional valve unit 4
Actuator port and the control port of hydraulic control middle position unloading valve 2 between be provided with shuttle valve 7.3-position 4-way manual reverse of direction valve cell 3
Actuator port and the control port of hydraulic control middle position unloading valve 2 between be provided with shuttle valve 7, as shown in Figure 4.
The multiple directional control valve of embodiment one and embodiment two is used equally to but is not limited to the harvest machineries such as maize harvesting machine,
Wherein, ear picking bench oil cylinder is controlled by three-position four-way electromagnetic directional valve unit 4.
Claims (7)
1. a kind of multiple directional control valve, including：
Valve unit, the oil inlet of the valve unit and main oil-feed oil communication, the oil return opening of the reversal valve and master
Oil return circuit is connected；Characterized in that,
Hydraulic control middle position unloading valve, the hydraulic control middle position unloading valve are provided between the main oil-feed oil circuit and the main oil return circuit
Control port connected with the actuator port of the valve unit；In middle position state, the oil inlet of the valve unit with
Actuator port disconnects.
2. multiple directional control valve as claimed in claim 1, it is characterised in that the actuator port of the valve unit and the liquid
Check valve is provided between the control port for controlling middle position unloading valve.
3. multiple directional control valve as claimed in claim 1, it is characterised in that the actuator port of the valve unit and the liquid
Shuttle valve is provided between the control port for controlling middle position unloading valve.
4. multiple directional control valve as claimed in claim 1, it is characterised in that the valve unit is three position four-way directional control valve.
5. multiple directional control valve as claimed in claim 1, it is characterised in that the valve unit include solenoid directional control valve and
Hand-operated direction valve.
6. multiple directional control valve as claimed in claim 1, it is characterised in that the hydraulic control middle position unloading valve is two position two-way valve.
7. multiple directional control valve as claimed in claim 1, it is characterised in that the hydraulic control middle position unloading valve and the reversal valve
Unit is arranged in different monomers, and these monomers inserting links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710041832.1A CN106837907A (en) | 2017-01-20 | 2017-01-20 | Multiple directional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710041832.1A CN106837907A (en) | 2017-01-20 | 2017-01-20 | Multiple directional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106837907A true CN106837907A (en) | 2017-06-13 |
Family
ID=59119820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710041832.1A Pending CN106837907A (en) | 2017-01-20 | 2017-01-20 | Multiple directional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837907A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2767729Y (en) * | 2005-02-23 | 2006-03-29 | 锦州市青山液压件制造有限责任公司 | Multi-way reversing valve with diverter |
| CN201110397Y (en) * | 2007-12-21 | 2008-09-03 | 戴豫 | Dynamic load sensing priority type multichannel conversion valve |
| CN102734247A (en) * | 2012-07-13 | 2012-10-17 | 三一重工股份有限公司 | Flow control system and method of multi-way directional valve and engineering machinery |
| CN204164074U (en) * | 2014-10-17 | 2015-02-18 | 徐工集团工程机械股份有限公司 | Multi-way valve and hydraulic flow shared system |
| CN206419291U (en) * | 2017-01-20 | 2017-08-18 | 雷沃重工股份有限公司 | Multiple directional control valve |
-
2017
- 2017-01-20 CN CN201710041832.1A patent/CN106837907A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2767729Y (en) * | 2005-02-23 | 2006-03-29 | 锦州市青山液压件制造有限责任公司 | Multi-way reversing valve with diverter |
| CN201110397Y (en) * | 2007-12-21 | 2008-09-03 | 戴豫 | Dynamic load sensing priority type multichannel conversion valve |
| CN102734247A (en) * | 2012-07-13 | 2012-10-17 | 三一重工股份有限公司 | Flow control system and method of multi-way directional valve and engineering machinery |
| CN204164074U (en) * | 2014-10-17 | 2015-02-18 | 徐工集团工程机械股份有限公司 | Multi-way valve and hydraulic flow shared system |
| CN206419291U (en) * | 2017-01-20 | 2017-08-18 | 雷沃重工股份有限公司 | Multiple directional control valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |