CN103256271B - Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve - Google Patents
Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve Download PDFInfo
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- CN103256271B CN103256271B CN201310157337.9A CN201310157337A CN103256271B CN 103256271 B CN103256271 B CN 103256271B CN 201310157337 A CN201310157337 A CN 201310157337A CN 103256271 B CN103256271 B CN 103256271B
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- Prior art keywords
- digital valve
- valve
- electromagnetic digital
- fuel tank
- action hydrocylinder
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- 239000000725 suspension Substances 0.000 title claims abstract description 15
- 239000002828 fuel tank Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 6
- 230000007935 neutral effect Effects 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 21
- 239000010720 hydraulic oil Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- Vehicle Body Suspensions (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve, mainly it is made up of oil pump, single-action hydrocylinder, closed type electromagnetic digital valve, check valve, open type electromagnetic digital valve and fuel tank, the check valve is set on the oil-feed oil circuit between single-action hydrocylinder and oil pump；The actuator port of single-action hydrocylinder connects fuel tank by closed type electromagnetic digital valve, and an open type electromagnetic digital valve is additionally provided between oil pump and fuel tank.The tractor suspension hydraulic system, the characteristics of being greatly reduced with execution response quickly, degree of accuracy height and cost, realizes rising, decline, floating and the neutral function of hydraulic servo.
Description
Technical field
The present invention relates to agricultural machinery technological field, more particularly to a kind of single-action hydrocylinder based on electromagnetic digital valve
Tractor suspension hydraulic system.
Background technology
Country's tractor suspension system typically manipulates pressure distributor or lifter, control by purely mechanic actuator at present
To realize rising, decline, the functional statuses such as neutrality have execution response lag, poor accuracy, adjustment calibration to hydraulic directio processed
It is loaded down with trivial details, awkward shortcoming.Realize that the automatization of tractor suspension system, intellectuality are that industry compels to be essential using electronic control technology
Ask.External typical hydraulic system of the tractor suspension hydraulic system based on electronically controlled proportional valve, but cost is of a relatively high so that should
With receiving certain restriction.
The content of the invention
The present invention provides a kind of single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve, with holding
The characteristics of row response quickly, degree of accuracy be high and cost is greatly reduced, realize the rising of hydraulic servo, declines, floating and in render meritorious service
Energy.
A kind of single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve, mainly by oil pump, nonoculture
Constituted with hydraulic jack, closed type electromagnetic digital valve, check valve, open type electromagnetic digital valve and fuel tank, in single-acting hydraulic oil
On oil-feed oil circuit between cylinder and oil pump, the check valve is set；The actuator port of single-action hydrocylinder passes through closed type electromagnetism
Digital valve connects fuel tank, and an open type electromagnetic digital valve is additionally provided between oil pump and fuel tank.
Preferably, an overflow valve is parallel with the oil return circuit between single-action hydrocylinder and fuel tank.
Preferably, relief valve is provided between oil pump and fuel tank T.
Above-mentioned technical proposal is employed, beneficial effects of the present invention are：The present invention passes through not open type electromagnetism number in the same time
The different conditions of word valve and closed type electromagnetic digital valve realize flow-control, so as to realize the rising shape of single-action hydrocylinder
State, neutral condition, decline state and quick condition.The present invention is to realize automatization, the intellectuality of Characteristics of Tractor Hydraulic Suspension System
Control provides the foundation, and with the feature for performing response quickly, degree of accuracy height and cost are greatly reduced.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Wherein：1st, oil pump；2nd, single-action hydrocylinder；3rd, closed type electromagnetic digital valve；4th, check valve；5th, open type electromagnetism
Digital valve；6th, overflow valve；7th, relief valve；8th, oil-feed oil circuit；9th, oil return circuit；T, fuel tank；A, actuator port；P, fuel pump outlet.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment one：
As shown in figure 1, a kind of single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve, the system
Mainly by oil pump 1, single-action hydrocylinder 2, closed type electromagnetic digital valve 3, check valve 4, open type electromagnetic digital valve 5 and fuel tank
T is constituted, and is provided with check valve 4 on the oil-feed oil circuit 8 between single-action hydrocylinder 2 and oil pump 1；Single-action hydrocylinder 2
Actuator port A connects fuel tank T by closed type electromagnetic digital valve 3, and an open type electromagnetism is additionally provided between oil pump 1 and fuel tank T
Digital valve 5.An overflow valve 6 is parallel with oil return circuit 9 between single-action hydrocylinder 2 and fuel tank T, hydraulic pressure is able to maintain that
Oil inlet pressure it is constant；In order to ensure the normal work in the rated load of the Hydraulic Elements in whole system, in oil pump 1 and oil
Relief valve 7 is provided between case T.
The state of the single-action hydrocylinder 2 in the system has propradation, neutral condition, decline state and floating type
State, by the different conditions of open type electromagnetic digital valve 5 and closed type electromagnetic digital valve 3 do not realize flow-control in the same time.
Its course of work is described in detail as follows：
Propradation：The solenoid dead electricity of closed type electromagnetic digital valve 3 is closed, open type electromagnetic digital valve
5 solenoid is controlled, and valve is switched according to controlled frequency, and fuel pump outlet P sets up high pressure, and the hydraulic oil of oil pump 1 is to single-acting
Hydraulic jack 2 does work, and the pressure of P is exported by controlling the switch ratio control oil pump of open type electromagnetic digital valve 5, so as to control
The rate of climb of 2 piston of single-action hydrocylinder.
Neutral condition：The solenoid dead electricity of open type electromagnetic digital valve 5, valve are in open mode, at fuel pump outlet P
Hydraulic oil unloading flow back to fuel tank T；The solenoid dead electricity of closed type electromagnetic digital valve 3, valve are closed, single-acting
The hydraulic oil of hydraulic jack 2 remains in piston intracavity and will not increase and will not also reduce, and piston is in neutral condition.
Decline state：The solenoid dead electricity of open type electromagnetic digital valve 5, valve are in open mode, at fuel pump outlet P
Hydraulic oil unloading flow back to fuel tank T, the solenoid of closed type electromagnetic digital valve 3 is controlled, valve according to controlled frequency switch, work
The hydraulic oil for making hydraulic fluid port A is flow back in fuel tank T, and single-action hydrocylinder 2 declines under the action of gravity of agricultural machinery and implement, by control
The switch ratio of closed type electromagnetic digital valve 3 controls the decrease speed of 2 piston of single-action hydrocylinder.
Quick condition：The solenoid dead electricity of open type electromagnetic digital valve 5, valve are in open mode, at fuel pump outlet P
Hydraulic oil unloading flow back to fuel tank T, the solenoid of closed type electromagnetic digital valve 3 obtains electric, valve be in open mode, single-acting
The hydraulic oil of the piston intracavity of hydraulic jack 2 with agricultural machinery and implement different conditions and oil extraction or oil suction, piston be in quick condition.
The present invention is not limited to above-mentioned specific embodiment, one of ordinary skill in the art from above-mentioned design,
Without performing creative labour, done a variety of conversion, it is within the scope of the present invention.
Claims (3)
1. the single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve, it is characterised in that it is main by oil pump,
Single-action hydrocylinder, closed type electromagnetic digital valve, check valve, open type electromagnetic digital valve and fuel tank composition, in the nonoculture
With on the oil-feed oil circuit between hydraulic jack and oil pump, the check valve is set；The actuator port of the single-action hydrocylinder leads to
Cross the closed type electromagnetic digital valve and connect the fuel tank, open type electromagnetism described in is additionally provided between the oil pump and fuel tank
Digital valve.
2. the single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve as claimed in claim 1, which is special
Levy and be, on the oil return circuit between the single-action hydrocylinder and fuel tank, be parallel with an overflow valve.
3. the single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve as claimed in claim 1 or 2, its
Be characterised by, relief valve is provided between the oil pump and fuel tank T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157337.9A CN103256271B (en) | 2013-04-28 | 2013-04-28 | Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157337.9A CN103256271B (en) | 2013-04-28 | 2013-04-28 | Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103256271A CN103256271A (en) | 2013-08-21 |
| CN103256271B true CN103256271B (en) | 2017-03-29 |
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ID=48960414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310157337.9A Expired - Fee Related CN103256271B (en) | 2013-04-28 | 2013-04-28 | Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103256271B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074842B (en) * | 2014-07-16 | 2016-04-13 | 上海豪高机电科技有限公司 | Digital valve pilot system |
| CN104074841B (en) * | 2014-07-16 | 2016-06-08 | 上海豪高机电科技有限公司 | Digital valve pilot system |
| CN104454708A (en) * | 2014-12-31 | 2015-03-25 | 桐庐松亚机械厂 | Oil path circulation system of hydraulic oil cylinder |
| CN114183416A (en) * | 2021-12-16 | 2022-03-15 | 杭叉集团股份有限公司 | Three-way stacking type forklift hydraulic system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727469Y (en) * | 2004-08-24 | 2005-09-21 | 上海彭浦巨力工程机械有限公司 | Load feedback pressure adaptation multiway valve |
| CN201081889Y (en) * | 2007-08-09 | 2008-07-09 | 中国农业大学 | Middle and small horsepower tractor hydraulic pressure distributer |
| CN201215190Y (en) * | 2008-07-07 | 2009-04-01 | 重庆耐德工业股份有限公司 | Digital solenoid electric valve |
| CN101451623A (en) * | 2008-12-17 | 2009-06-10 | 中国航天科技集团公司第六研究院第十一研究所 | Pulse width modulation type digital high speed switch solenoid valve |
| CN101660551A (en) * | 2009-09-25 | 2010-03-03 | 中国北方车辆研究所 | Oil gas suspension hydraulic locking device |
| CN203285779U (en) * | 2013-04-28 | 2013-11-13 | 潍坊威度电子科技有限公司 | Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves |
-
2013
- 2013-04-28 CN CN201310157337.9A patent/CN103256271B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727469Y (en) * | 2004-08-24 | 2005-09-21 | 上海彭浦巨力工程机械有限公司 | Load feedback pressure adaptation multiway valve |
| CN201081889Y (en) * | 2007-08-09 | 2008-07-09 | 中国农业大学 | Middle and small horsepower tractor hydraulic pressure distributer |
| CN201215190Y (en) * | 2008-07-07 | 2009-04-01 | 重庆耐德工业股份有限公司 | Digital solenoid electric valve |
| CN101451623A (en) * | 2008-12-17 | 2009-06-10 | 中国航天科技集团公司第六研究院第十一研究所 | Pulse width modulation type digital high speed switch solenoid valve |
| CN101660551A (en) * | 2009-09-25 | 2010-03-03 | 中国北方车辆研究所 | Oil gas suspension hydraulic locking device |
| CN203285779U (en) * | 2013-04-28 | 2013-11-13 | 潍坊威度电子科技有限公司 | Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves |
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| CN103256271A (en) | 2013-08-21 |
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