CN206419291U - Multiple directional control valve - Google Patents
Multiple directional control valve Download PDFInfo
- Publication number
- CN206419291U CN206419291U CN201720076681.9U CN201720076681U CN206419291U CN 206419291 U CN206419291 U CN 206419291U CN 201720076681 U CN201720076681 U CN 201720076681U CN 206419291 U CN206419291 U CN 206419291U
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- China
- Prior art keywords
- valve
- middle position
- oil
- directional control
- valve unit
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- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000000178 monomer Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 35
- 210000000635 valve cell Anatomy 0.000 description 12
- 238000003306 harvesting Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 240000008042 Zea mays Species 0.000 description 2
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000009973 maize Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses 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 are connected 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, and cost is low.
Description
Technical field
The utility model is related 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 most representative in harvest machinery again
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 mainly 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, equipment shows its exclusive advantage with the manual complex controll banked direction control valves of electromagnetism.
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 by solenoid valve control, by different electromagnetic control signals in magnetic valve, controlling corresponding electromagnetism to act and then control
The moving direction of valve rod processed, realizes that hydraulic jack is performed by compulsory exercise, and other executing agencies are real using control reversal valve manually
Now performed by compulsory exercise.Board-like electromagnetism being used during current banked direction control valves (such as Fig. 1) is used 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 connect A1 mouthful, and B1 mouthful connect T mouthfuls, electromagnetism flow divider while must be electric, make point
Stream valve is off, and hydraulic oil promotes hydraulic jack to act by actuator port.Magnetic valve valve rod moves to right principle with moving 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, and cost is higher, governs hydraulic system using in engineering and agricultural machinery and sends out
Exhibition.
Utility model content
Technical problem to be solved in the utility model is：A kind of multiple directional control valve is provided, the multiple directional control valve is to solve
The certainly technical problem of multi-way reversing, each action switching of the multiple directional control valve is steady, reliable, and internal structure is simple, compact conformation,
The pressure loss is small, and cost is low.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of multiple directional control valve, including reversal valve list
Member, the oil inlet of the valve unit and main oil-feed oil communication, the oil return opening of the reversal valve are connected with main oil return circuit；
Hydraulic control middle position unloading valve, the control of the hydraulic control middle position unloading valve are provided between the main oil-feed oil circuit and the main oil return circuit
Liquefaction mouthful is connected with the actuator port of the valve unit；In middle position state, the oil inlet of the valve unit and work
Hydraulic fluid port disconnects.
As an improvement 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 an improvement 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.
As an improvement mode, the valve unit be three position four-way directional control valve.
As an improvement mode, the valve unit includes solenoid directional control valve and hand-operated direction valve.
As an improvement mode, the hydraulic control middle position unloading valve be two position two-way valve.
As an improvement 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：
The utility model is using oil circuit in parallel, the structure of middle position unloading valve off-load, and the multiple directional control valve is by by reversal valve
Unit valve back loading pressure feedback controls the shunting of flow divider to hydraulic control middle position unloading valve, and then controls respectively holding for hydraulic system
The action of row mechanism, 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 interior
Portion's runner 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
Promoted on agricultural machinery.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 the utility model embodiment one；
The outline drawing of Fig. 3 the utility model embodiment one；
The hydraulic schematic diagram of Fig. 4 the utility model embodiment 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.
Embodiment
The utility model is further illustrated 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 and main oil-feed oil communication, the oil return opening of three-position four-way electromagnetic directional valve unit 4 connect 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 the control port of 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
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, which links together, 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, A2, B2 mouthfuls of actuator port 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 are connected by hydraulic control middle position unloading valve 2 with T mouthfuls, pressure oil off-load oil return, and overflow valve, which rises, to be protected
Shield is acted on.
When the valve rod of three-position four-way electromagnetic directional valve unit 4 is moved to the left, P oral fluids force feed enters A2 mouthfuls, B2 mouthfuls and T mouthfuls
Communicate.When A2 mouthfuls of pressure exceed setting value, check valve 5 is opened, by the spring cavity phase of check valve 5 and 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
When the valve rod of valve unit 4 is moved to the right, principle is with working as 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
The structure of embodiment two and embodiment one is essentially identical.Difference is：Three-position four-way electromagnetic directional valve unit 4
Actuator port and hydraulic control middle position unloading valve 2 control port between be provided with shuttle valve 7.3-position 4-way manual reverse of direction valve cell 3
Actuator port and hydraulic control middle position unloading valve 2 control port 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 for 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 |
|---|---|---|---|
| CN201720076681.9U CN206419291U (en) | 2017-01-20 | 2017-01-20 | Multiple directional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720076681.9U CN206419291U (en) | 2017-01-20 | 2017-01-20 | Multiple directional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206419291U true CN206419291U (en) | 2017-08-18 |
Family
ID=59571736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720076681.9U Expired - Fee Related CN206419291U (en) | 2017-01-20 | 2017-01-20 | Multiple directional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206419291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837907A (en) * | 2017-01-20 | 2017-06-13 | 雷沃重工股份有限公司 | Multiple directional control valve |
-
2017
- 2017-01-20 CN CN201720076681.9U patent/CN206419291U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837907A (en) * | 2017-01-20 | 2017-06-13 | 雷沃重工股份有限公司 | Multiple directional control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 |