CN103256271A - Single-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve - Google Patents
Single-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve Download PDFInfo
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- CN103256271A CN103256271A CN2013101573379A CN201310157337A CN103256271A CN 103256271 A CN103256271 A CN 103256271A CN 2013101573379 A CN2013101573379 A CN 2013101573379A CN 201310157337 A CN201310157337 A CN 201310157337A CN 103256271 A CN103256271 A CN 103256271A
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- hydraulic jack
- acting hydraulic
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Abstract
The invention discloses a single-action hydraulic oil cylinder tractor suspension hydraulic system based on an electromagnetic digital valve. The single-action hydraulic oil cylinder tractor suspension hydraulic system is mainly composed of an oil pump, a single-action hydraulic oil cylinder, a normally closed type electromagnetic digital valve, a check valve, a normally opened type electromagnetic digital valve and an oil tank. The check valve is arranged on an oil inlet oil-way between the single-action hydraulic oil cylinder and the oil pump. A working port of the single-action hydraulic oil cylinder is connected with the oil tank through the normally closed type electromagnetic digital valve. The normally opened type electromagnetic digital valve is arranged between the oil pump and the oil tank. The tractor suspension hydraulic system has the advantages of being fast in executing and response, high in accuracy and capable of greatly reducing cost, and achieves the functions of rising, dropping, floating and neutrality of a hydraulic servo.
Description
Technical field
The present invention relates to agricultural machinery technological field, relate in particular to a kind of single-acting hydraulic jack tractor suspension hydraulic system based on the electromagnetism digital valve.
Background technique
Present domestic tractor suspension system is generally by the operating hydraulically operated distributor of pure mechanical actuating mechanism or lifter, the control hydraulic directio is to realize rising, to descend, functional statuses such as neutrality exist and carry out that response lag, validity are poor, to adjust calibration loaded down with trivial details, awkward shortcoming.Adopt electronic control technology to realize that automation, the intellectuality of tractor suspension system are the industry active demands.External typical tractor suspension hydraulic system is based on the hydraulic system of electronically controlled proportional valve, but cost is higher relatively, makes to use to be subjected to certain restriction.
Summary of the invention
The invention provides a kind of single-acting hydraulic jack tractor suspension hydraulic system based on the electromagnetism digital valve, have the advantages that the response carried out is quick, validity is high and cost significantly reduces, realize rising, decline, the unsteady and neutral function of hydraulic servo.
A kind of single-acting hydraulic jack tractor suspension hydraulic system based on the electromagnetism digital valve, mainly be made up of oil pump, single-acting hydraulic jack, normal close type electromagnetism digital valve, one-way valve, open type electromagnetism digital valve and fuel tank, the oil-feed oil circuit between single-acting hydraulic jack and oil pump arranges described one-way valve; The actuator port of single-acting hydraulic jack connects fuel tank by normal close type electromagnetism digital valve, also is provided with an open type electromagnetism digital valve between oil pump and fuel tank.
Preferably, the oil return circuit between single-acting hydraulic jack and fuel tank is parallel with a relief valve.
Preferably, between oil pump and fuel tank T, be provided with safety valve.
Adopted technique scheme, beneficial effect of the present invention is: the present invention has realized flow control by the different conditions of difference moment open type electromagnetism digital valve and normal close type electromagnetism digital valve, thereby realizes propradation, neutral condition, decline state and the quick condition of single-acting hydraulic jack.The present invention provides the foundation for the automation of realization tractor hydraulic suspension system, intelligent control, and has the feature that the response carried out is quick, validity is high and cost significantly reduces.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Wherein: 1, oil pump; 2, single-acting hydraulic jack; 3, normal close type electromagnetism digital valve; 4, one-way valve; 5, open type electromagnetism digital valve; 6, relief valve; 7, safety valve; 8, oil-feed oil circuit; 9, oil return circuit; T, fuel tank; A, actuator port; P, oil pump outlet.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment one:
As shown in Figure 1, a kind of single-acting hydraulic jack tractor suspension hydraulic system based on the electromagnetism digital valve, this system mainly is made up of oil pump 1, single-acting hydraulic jack 2, normal close type electromagnetism digital valve 3, one-way valve 4, open type electromagnetism digital valve 5 and fuel tank T, and the oil-feed oil circuit 8 between single-acting hydraulic jack 2 and oil pump 1 is provided with one-way valve 4; The actuator port A of single-acting hydraulic jack 2 connects fuel tank T by normal close type electromagnetism digital valve 3, also is provided with an open type electromagnetism digital valve 5 between oil pump 1 and fuel tank T.Oil return circuit 9 between single-acting hydraulic jack 2 and fuel tank T is parallel with a relief valve 6, can keep the constant of hydraulic oil inlet pressure; In order to guarantee the hydraulic element proper functioning in load rating in the whole system, between oil pump 1 and fuel tank T, be provided with safety valve 7.
The state of the single-acting hydraulic jack 2 in this system has propradation, neutral condition, decline state and quick condition, has realized flow control by the different conditions of difference moment open type electromagnetism digital valve 5 and normal close type electromagnetism digital valve 3.
Its working procedure is described in detail as follows:
Propradation: the electromagnetic coil dead electricity of normal close type electromagnetism digital valve 3 is in closed condition, the electromagnetic coil of open type electromagnetism digital valve 5 is controlled, valve is according to the controlled frequency switch, oil pump outlet P sets up high pressure, the high pressure oil of oil pump 1 is to 2 actings of single-acting hydraulic jack, switch proportional control oil pump by control open type electromagnetism digital valve 5 exports the pressure of P, thereby controls the rate of climb of single-acting hydraulic jack 2 pistons.
Neutral condition: the electromagnetic coil dead electricity of open type electromagnetism digital valve 5, valve is in open mode, and fuel tank T is flowed back in the hydraulic oil unloading at oil pump outlet P place; The electromagnetic coil dead electricity of normal close type electromagnetism digital valve 3, valve is in closed condition, and the hydraulic oil of single-acting hydraulic jack 2 remains in the piston cavity and can not increase also and can not reduce, and piston is in neutral condition.
Decline state: the electromagnetic coil dead electricity of open type electromagnetism digital valve 5, valve is in open mode, fuel tank T is flowed back in the hydraulic oil unloading at oil pump outlet P place, the electromagnetic coil of normal close type electromagnetism digital valve 3 is controlled, valve is according to the controlled frequency switch, the hydraulic oil of actuator port A flow back in the fuel tank T, and single-acting hydraulic jack 2 descends under the gravity effect of agricultural machinery and implement, the rate of descent of switch proportional control single-acting hydraulic jack 2 pistons by control normal close type electromagnetism digital valve 3.
Quick condition: the electromagnetic coil dead electricity of open type electromagnetism digital valve 5, valve is in open mode, fuel tank T is flowed back in the hydraulic oil unloading at oil pump outlet P place, the electromagnetic coil of normal close type electromagnetism digital valve 3 gets, valve is in open mode, hydraulic oil oil extraction or oil suction with the different conditions of agricultural machinery and implement in the piston cavity of single-acting hydraulic jack 2, piston is in quick condition.
The present invention is not limited to above-mentioned concrete mode of execution, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.
Claims (3)
1. based on the single-acting hydraulic jack tractor suspension hydraulic system of electromagnetism digital valve, it is characterized in that, mainly be made up of oil pump, single-acting hydraulic jack, normal close type electromagnetism digital valve, one-way valve, open type electromagnetism digital valve and fuel tank, the oil-feed oil circuit between described single-acting hydraulic jack and oil pump arranges described one-way valve; The actuator port of described single-acting hydraulic jack connects described fuel tank by described normal close type electromagnetism digital valve, also is provided with a described open type electromagnetism digital valve between described oil pump and fuel tank.
2. the single-acting hydraulic jack tractor suspension hydraulic system based on the electromagnetism digital valve as claimed in claim 1 is characterized in that the oil return circuit between described single-acting hydraulic jack and fuel tank is parallel with a relief valve.
3. the single-acting hydraulic jack tractor suspension hydraulic system based on the electromagnetism digital valve as claimed in claim 1 or 2 is characterized in that, is provided with safety valve between described 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 true CN103256271A (en) | 2013-08-21 |
| CN103256271B CN103256271B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310157337.9A Active CN103256271B (en) | 2013-04-28 | 2013-04-28 | Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074841A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
| CN104074842A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 active Active
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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074841A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
| CN104074842A (en) * | 2014-07-16 | 2014-10-01 | 上海豪高机电科技有限公司 | Digital valve testing system |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103256271B (en) | 2017-03-29 |
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