CN103287489A - Electric-hydraulic proportional hydraulic control system for automatic drive of agricultural machinery vehicle - Google Patents
Electric-hydraulic proportional hydraulic control system for automatic drive of agricultural machinery vehicle Download PDFInfo
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- CN103287489A CN103287489A CN2013102734753A CN201310273475A CN103287489A CN 103287489 A CN103287489 A CN 103287489A CN 2013102734753 A CN2013102734753 A CN 2013102734753A CN 201310273475 A CN201310273475 A CN 201310273475A CN 103287489 A CN103287489 A CN 103287489A
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Abstract
The invention relates to an electric-hydraulic proportional hydraulic control system for automatic drive of an agricultural machinery vehicle, in particular to a device of the electric-hydraulic proportional hydraulic control system for the automatic drive of the agricultural machinery vehicle. The electric-hydraulic proportional hydraulic control system is characterized in that a main valve oil inlet is communicated with an oil inlet of a pressure compensation valve, two ends of a check valve are communicated with the main valve oil inlet and a main valve oil outlet respectively, two ends of a direct relief valve are communicated with the main valve oil outlet and an oil outlet of the pressure compensation valve respectively, a working port of the pressure compensation valve is communicated with one end of a shuttle valve, an oil outlet of a proportional direction valve is communicated with the main valve oil outlet, two working ports of the proportional direction valve are communicated with two ends of the shuttle valve, and two ends of an oil cylinder are communicated with oil outlets of a first balance valve and a second balance valve respectively. The electric-hydraulic proportional hydraulic control system has the advantages of being simple in structure, high in integration degree by adopting a cartridge valve, small in external size, free of leakage, precise and simple in operation and control, stable and reliable in working and stable in operation of the vehicle, saving energy consumption, and being widely applicable to the device of the electric-hydraulic proportional hydraulic control system for the automatic drive of the agricultural machinery vehicle.
Description
Technical field
The present invention relates to a kind of field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system, the particularly equipment of field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system.
Background technology
At present, the field machine vehicle is to adopt combustion engine mechanical transfer power to carry out operation mostly, is mainly used in compound tillage operation, ridging seeding operation, sprinkling irrigation plant protection operation etc., the waste of power height, operating environment is more abominable, and the operation operating mode is complicated and changeable, and the operant level height of chaufeur is variant, time is long tired easily, particularly be not easy to take one's bearings during the large tracts of land operation, field straight line homework precision is relatively poor, is not suitable for the operation in night, when the busy farming season, delay the time, cause production efficiency low.Along with improving constantly of farm labor efficiency, on east China, Xinjiang and other places more uses are arranged than the vehicle of high-power, the user more wishes to take full advantage of resource, improves the service efficiency of vehicle, solves the above problem of automatic steering device with regard to needs.
Summary of the invention
Purpose of the present invention, provide a kind of field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system, it is to adopt electro-hydraulic proportional valve to combine with the integrated hydraulic control system, working direction according to the signal control vehicle that receives, use with the driving engine cooperation, reaching vehicle advances according to set direction, improve trac. production efficiency, lengthen working hours, improve the sower operating speed, alleviate driving fatigue intensity, realize the purpose of electric-hydraulic proportion fluid control field machine Vehicular automatic driving.
Field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system of the present invention takes following technical scheme to realize: it is by the main valve oil inlet, the main valve oil outlet, check valve, pressure-compensated valve, electromagnet cut off valve, the proportion directional valve, direct-acting overflow valve, shuttle valve, the number one balance cock, No. second balance cock and oil cylinder constitute, the main valve oil inlet is communicated with the oil outlet of check valve, the main valve oil inlet is communicated with the oil inlet of pressure-compensated valve, the oil inlet of check valve is communicated with the main valve oil outlet, one end of direct-acting overflow valve is communicated with the main valve oil outlet, the other end of direct-acting overflow valve is communicated with the oil outlet of pressure-compensated valve, the working hole of pressure-compensated valve is communicated with shuttle valve one end, the working hole of pressure-compensated valve is communicated with the oil inlet of electromagnet cut off valve, the oil outlet of electromagnet cut off valve is communicated with the oil inlet of proportion directional valve, the oil outlet of proportion directional valve is communicated with the main valve oil outlet, two working holes of proportion directional valve are communicated with the two ends of shuttle valve respectively, the working hole of proportion directional valve is communicated with number one balance cock oil inlet, the working hole of proportion directional valve is communicated with No. second balance cock oil inlet, the oil outlet of number one balance cock is communicated with oil cylinder one end, and the oil outlet of No. second balance cock is communicated with the oil cylinder other end.Reach vehicle and advance according to set direction, improve trac. production efficiency, lengthen working hours, improve the sower operating speed, alleviate driving fatigue intensity, realize the effect of electric-hydraulic proportion fluid control field machine Vehicular automatic driving.
The present invention is when using operation, after the engine start, when vehicle advances, the pressure oil of Hydraulic Pump output enters in the main valve oil inlet, pressure oil enters in the electromagnet cut off valve by pressure-compensated valve, when electromagnet cut off valve must not when electricity, pressure oil is cut off, when electromagnet cut off valve gets when electric, pressure oil enters the proportion directional valve by electromagnet cut off valve, when vehicle during according to the direction running set, the proportion directional valve is not worked, when vehicle departs from given direction running, controller will be issued the proportion directional valve signal to correct vehicle forward direction, when the left side of proportion directional valve electromagnet gets when electric, the proportion directional valve is in the intersection position, the proportion directional valve will be determined the openings of sizes of proportion directional valve working hole according to the size of signal, realize the proportional control of pressure oil, pressure oil process balance cock enters the right-hand rod chamber of oil cylinder, and the piston of control oil cylinder is moved to the left, when the right side of proportion directional valve electromagnet gets when electric, the proportion directional valve is in parallel position, and pressure oil process balance cock enters the bar chamber, left side of oil cylinder, and the piston of control oil cylinder moves right, the working direction of oil cylinder control vehicle reaches vehicle according to the direction running of setting; When oil cylinder piston moves when running into bigger resistance, this moment, pressure raise, and pressure oil enters the working hole of pressure-compensated valve by shuttle valve, and the oil-feed of cut-off pressure throttle compensating valve avoids pressure to continue to raise and damage vehicle.
The effect of field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system of the present invention is simple in structure, adopts inserted valve, the integrated level height, the external form volume is little, do not have and reveal, operation control is accurately easy, easy to maintenance, working stability is reliable, vehicle operating is steady, and energy efficient reduces aerial contamination, reduce vehicle operating cost, be widely used in the electric-hydraulic proportion hydraulic control system equipment on the field machine Vehicular automatic driving.
Description of drawings
Field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system of the present invention will describe in further detail by reference to the accompanying drawings.
Fig. 1 is the hydraulic structure scheme drawing of field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system of the present invention.
10-No. the second balance cock 11-oil cylinder of 1-main valve oil inlet, 2-main valve oil outlet, 3-check valve, 4-pressure-compensated valve, 5-electromagnet cut off valve, 6-proportion directional valve 7-direct-acting overflow valve, 8-shuttle valve, 9-number one balance cock.
The specific embodiment
With reference to Fig. 1, field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system of the present invention, it is by main valve oil inlet 1, main valve oil outlet 2, check valve 3, pressure-compensated valve 4, electromagnet cut off valve 5, proportion directional valve 6, direct-acting overflow valve 7, shuttle valve 8, number one balance cock 9, No. second balance cock 10 and oil cylinder 11 constitute, main valve oil inlet 1 is communicated with the oil outlet of check valve 3, main valve oil inlet 1 is communicated with the oil inlet of pressure-compensated valve 4, the oil inlet of check valve 3 is communicated with main valve oil outlet 2, one end of direct-acting overflow valve 7 is communicated with main valve oil outlet 2, the other end of direct-acting overflow valve 7 is communicated with the oil outlet of pressure-compensated valve 4, the working hole of pressure-compensated valve 4 is communicated with shuttle valve 8 one ends, the working hole of pressure-compensated valve 4 is communicated with the oil inlet of electromagnet cut off valve 5, the oil outlet of electromagnet cut off valve 5 is communicated with the oil inlet of proportion directional valve 6, the oil outlet of proportion directional valve 6 is communicated with main valve oil outlet 2, two working holes of proportion directional valve 6 are communicated with the two ends of shuttle valve 8 respectively, the working hole of proportion directional valve 6 is communicated with number one balance cock 9 oil inlets, the working hole of proportion directional valve 6 is communicated with No. second balance cock 10 oil inlets, the oil outlet of number one balance cock 9 is communicated with oil cylinder 11 1 ends, and the oil outlet of No. second balance cock 10 is communicated with oil cylinder 11 other ends.Reach vehicle and advance according to set direction, improve trac. production efficiency, lengthen working hours, improve the sower operating speed, alleviate driving fatigue intensity, realize the effect of electric-hydraulic proportion fluid control field machine Vehicular automatic driving.
The embodiment of field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system of the present invention, it is by main valve oil inlet 1, main valve oil outlet 2, check valve 3, pressure-compensated valve 4, electromagnet cut off valve 5, proportion directional valve 6, direct-acting overflow valve 7, shuttle valve 8, number one balance cock 9, No. second balance cock 10 and oil cylinder 11 constitute, when using operation, after the engine start, when vehicle advances, the pressure oil of Hydraulic Pump output enters in the main valve oil inlet 1, pressure oil enters in the electromagnet cut off valve 5 by pressure-compensated valve 4, when electromagnet cut off valve 5 must not when electricity, pressure oil is cut off, when electromagnet cut off valve 5 when electric, pressure oil enters in the proportion directional valve 6 by electromagnet cut off valve 5, when vehicle during according to the direction running set, proportion directional valve 6 is not worked, when vehicle departs from given direction running, controller will be issued proportion directional valve 6 signals to correct vehicle forward direction, when the left side of proportion directional valve 6 electromagnet gets when electric, proportion directional valve 6 is in the intersection position, proportion directional valve 6 will be determined the openings of sizes of proportion directional valve 6 working holes according to the size of signal, realize the proportional control of pressure oil, pressure oil is through number one balance cock 9,10 enter the right-hand rod chamber of oil cylinder 11, thereby the piston of control oil cylinder 11 is moved to the left, when the right side of proportion directional valve 6 electromagnet gets when electric, proportion directional valve 6 is in parallel position, pressure oil is through balance cock 9, No. second balance cock 10 enters the bar chamber, left side of oil cylinder 11, the piston of control oil cylinder 11 moves right, the working direction of oil cylinder 11 control vehicles reaches vehicle according to the direction running of setting; When oil cylinder 11 pistons move when running into bigger resistance, this moment, pressure raise, and pressure oil enters the working hole of pressure-compensated valve 4 by shuttle valve 8, and the oil-feed of cut-off pressure throttle compensating valve 4 avoids pressure to continue to raise and damage vehicle.
Claims (1)
1. field machine Vehicular automatic driving electric-hydraulic proportion hydraulic control system, it is by main valve oil inlet (1), main valve oil outlet (2), check valve (3), pressure-compensated valve (4), electromagnet cut off valve (5), proportion directional valve (6), direct-acting overflow valve (7), shuttle valve (8), number one balance cock (9), No. second balance cock (10) and oil cylinder (11) constitute, it is characterized in that main valve oil inlet (1) is communicated with the oil outlet of check valve (3), main valve oil inlet (1) is communicated with the oil inlet of pressure-compensated valve (4), the oil inlet of check valve (3) is communicated with main valve oil outlet (2), one end of direct-acting overflow valve (7) is communicated with main valve oil outlet (2), the other end of direct-acting overflow valve (7) is communicated with the oil outlet of pressure-compensated valve (4), the working hole of pressure-compensated valve (4) is communicated with shuttle valve (8) one ends, the working hole of pressure-compensated valve (4) is communicated with the oil inlet of electromagnet cut off valve (5), the oil outlet of electromagnet cut off valve (5) is communicated with the oil inlet of proportion directional valve (6), the oil outlet of proportion directional valve (6) is communicated with main valve oil outlet (2), two working holes of proportion directional valve (6) are communicated with the two ends of shuttle valve (8) respectively, the working hole of proportion directional valve (6) is communicated with number one balance cock (9) oil inlet, the working hole of proportion directional valve (6) is communicated with No. second balance cock (10) oil inlet, the oil outlet of number one balance cock (9) is communicated with oil cylinder (11) one ends, and the oil outlet of No. second balance cock (10) is communicated with oil cylinder (11) other end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102734753A CN103287489A (en) | 2013-07-02 | 2013-07-02 | Electric-hydraulic proportional hydraulic control system for automatic drive of agricultural machinery vehicle |
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| CN2013102734753A CN103287489A (en) | 2013-07-02 | 2013-07-02 | Electric-hydraulic proportional hydraulic control system for automatic drive of agricultural machinery vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879334A (en) * | 2015-04-23 | 2015-09-02 | 凯迈（洛阳）测控有限公司 | Piston lifting mechanism and hydraulic control device thereof |
| CN110296114A (en) * | 2019-07-29 | 2019-10-01 | 浙江省机械工业情报研究所 | A kind of agricultural machinery suspension mechanism hydraulic levels control system of fast lifting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2935065C2 (en) * | 1979-08-30 | 1985-05-23 | Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg | Electro-hydraulic proportional control for steering inductively guided industrial trucks |
| JPH1086835A (en) * | 1996-09-19 | 1998-04-07 | Kayaba Ind Co Ltd | Power steering device |
| CN2786060Y (en) * | 2005-02-04 | 2006-06-07 | 新乡市金陵电力设备有限公司 | Car unloader with energy-saving function |
| CN2797767Y (en) * | 2005-04-18 | 2006-07-19 | 三一重型装备有限公司 | Shock absorbing system for coal mining machine |
| CN201354096Y (en) * | 2009-02-13 | 2009-12-02 | 镇江大地液压有限责任公司 | All-hydraulic steering control valve |
| EP1826096B1 (en) * | 2006-02-22 | 2010-09-22 | ThyssenKrupp Presta SteerTec GmbH | Method for controlling power assisted steering and servo steering for a motor vehicle |
| CN203294177U (en) * | 2013-07-02 | 2013-11-20 | 山东泰丰液压股份有限公司 | Electric-hydraulic proportional hydraulic control device for automatic drive of agricultural machinery vehicles |
-
2013
- 2013-07-02 CN CN2013102734753A patent/CN103287489A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2935065C2 (en) * | 1979-08-30 | 1985-05-23 | Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg | Electro-hydraulic proportional control for steering inductively guided industrial trucks |
| JPH1086835A (en) * | 1996-09-19 | 1998-04-07 | Kayaba Ind Co Ltd | Power steering device |
| CN2786060Y (en) * | 2005-02-04 | 2006-06-07 | 新乡市金陵电力设备有限公司 | Car unloader with energy-saving function |
| CN2797767Y (en) * | 2005-04-18 | 2006-07-19 | 三一重型装备有限公司 | Shock absorbing system for coal mining machine |
| EP1826096B1 (en) * | 2006-02-22 | 2010-09-22 | ThyssenKrupp Presta SteerTec GmbH | Method for controlling power assisted steering and servo steering for a motor vehicle |
| CN201354096Y (en) * | 2009-02-13 | 2009-12-02 | 镇江大地液压有限责任公司 | All-hydraulic steering control valve |
| CN203294177U (en) * | 2013-07-02 | 2013-11-20 | 山东泰丰液压股份有限公司 | Electric-hydraulic proportional hydraulic control device for automatic drive of agricultural machinery vehicles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879334A (en) * | 2015-04-23 | 2015-09-02 | 凯迈（洛阳）测控有限公司 | Piston lifting mechanism and hydraulic control device thereof |
| CN110296114A (en) * | 2019-07-29 | 2019-10-01 | 浙江省机械工业情报研究所 | A kind of agricultural machinery suspension mechanism hydraulic levels control system of fast lifting |
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Application publication date: 20130911 |