CN101946576B - Automatic control system for opening depth for disk-type opener - Google Patents
Automatic control system for opening depth for disk-type opener Download PDFInfo
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- CN101946576B CN101946576B CN2010102173223A CN201010217322A CN101946576B CN 101946576 B CN101946576 B CN 101946576B CN 2010102173223 A CN2010102173223 A CN 2010102173223A CN 201010217322 A CN201010217322 A CN 201010217322A CN 101946576 B CN101946576 B CN 101946576B
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- variable displacement
- displacement transducer
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Abstract
The invention relates to an automatic control system for the opening depth for disk-type opener. The system is characterized by comprising a machine frame, a detection unit, a control unit, a hydraulic system, an executing mechanism and the disk-type opener, wherein the machine frame comprises a cross beam, a four-bar mechanism and a small machine frame; the opener is fixed on the small machine frame; the detection unit comprises a connecting rod, a detection land wheel and a linear variable displacement transducer; the detection land wheel is hinged on the small machine frame through the connecting rod; the upper end of the transducer is arranged on the small machine frame while the lower end is connected with the axle of the detection land wheel; the input end of the control unit is connected with the detection unit while the output end is connected with the hydraulic system; the executing mechanism comprises an L-shaped rod, a working frame and an adjusting land wheel; one end of the L-shaped rod is hinged with the hydraulic system while the other end is connected with the working frame; the L-shaped rod is hinged on the small machine frame at the corner; the front end of the working frame is hinged with the small machine frame; a chute is reserved at the middle position of the working frame and is connected with the L-shaped rod; and the adjusting land wheel is fixed at the rear end of the working frame. The system can adjust the opening depth of the disk-type opener in real time, thus avoiding over-deep or over-shallow opening operation, adjusting sowing depth in real time and improving the consistency of the sowing depth.
Description
Technical field
The present invention relates to agricultural machinery technological field, particularly about a kind of disc type plough trench digging degree of depth automatic control system.
Background technology
Conservation tillage to the farmland carry out no-tillage, minimal till, cover the face of land with crops straw, reduce wind erosion, water erosion, increase soil fertility and drought-resistant ability, promote in the north China large tracts of land.And the no-tillage fertilizing seeding technique is the most critical technology of conservation tillage, Given this, China's researcher innovation ground development and design a series of suitable China's national situations light-duty high anti-blocking performance exempt to broadcast machine.
At present; Be applied in the plough type of exempting to broadcast on the machine and mainly comprise wedge angle type plough, disc type plough, rotary blade plough and power drive disk coulter; Wherein, Rotary blade plough and power drive disk coulter produce a spill kind bed, need and following closely wedge angle type plough or disc type plough cooperating, realize ferti-seeding.Though the disc type plough needs the relatively large soil pressure of going into, in view of it is difficult for being twined by stalk, and can realize synchronized profile modeling with contour wheel, in the farm work of reality, obtained application to a certain degree.The conservation tillage face of land, soil structure and field condition are complicated, and soil property is changeable, and when using the sowing of disc type plough, it is darker on mellow soil, to sink, and sowing depth is increased; And on stiff soil, the soil penetration resistance is big, and it is not enough to bury, and sows shallowly, and seeding quality can't guarantee.
Therefore, need a kind of disc type plough trench digging degree of depth automatic control system that under the conservation tillage condition, is directed against different soil properties that is applicable to, improve the sowing depth uniformity, improve operation quality.
Summary of the invention
To the problems referred to above; The purpose of this invention is to provide a kind of disc type plough trench digging degree of depth automatic control system; Can be implemented in the field condition conservation tillage face of land complicated and changeable keeps certain trench digging degree of depth, avoided dark or shallow excessively ditching operation; The real-time regulated sowing depth is improved the seed level uniformity.
For realizing above-mentioned purpose, the present invention takes following technical scheme: a kind of disc type plough trench digging degree of depth automatic control system, and it is characterized in that: it comprises frame, detecting unit, control module, hydraulic system, executing agency and disc type plough; Said frame comprises crossbeam, four-bar mechanism and little frame, and said little frame links to each other with crossbeam through four-bar mechanism, and said disc type plough is fixed on the said little frame; Said detecting unit comprises connecting rod, detects land wheel and linear variable displacement transducer; Said detection land wheel through said rod hinge connection on said little frame; Said linear variable displacement transducer upper end is installed on the said little frame, and the lower end links to each other with said detection land wheel wheel shaft; The input of said control module is connected with the signal output part of said detecting unit, and output is connected with said hydraulic system; Said executing agency comprises L type bar, falsework and adjusting land wheel; The output of said L type bar one end and said hydraulic system is hinged, and the other end links to each other with said falsework, and is hinged on the said little frame in corner; Said falsework front end and said little frame are hinged and connected, and link to each other with said L type bar at intermediate open position one chute, and said adjusting land wheel is fixed on the said falsework rear end.
Said hydraulic system comprises fuel tank, hydraulic pump, filter, manometer, proportional reversing valve, hydraulic cylinder, overflow valve and radiator, and the push rod of said hydraulic cylinder connects said L type bar one end.
In the vertical vertical plane of the symmetry of said four-bar mechanism a compression spring is set.
Said control module adopts single-chip microcomputer, and the signal output part of the linear variable displacement transducer in the input of said single-chip microcomputer and the said detecting unit is connected, and output is connected with proportional reversing valve in the said hydraulic system; Said single-chip microcomputer receives the detection data that said linear variable displacement transducer is sent, and data are carried out collection analysis, the operation of confirming to export control signal and controlling said proportional reversing valve.
In vertical vertical plane, said detection land wheel is followed actual surface and is freely swung.
The absolute distance of installation site, said detection land wheel wheel shaft and said linear variable displacement transducer top and is measured in real time in the upper and lower end installation site of said linear variable displacement transducer in same vertical vertical plane.
The present invention is owing to take above technical scheme, and it has the following advantages: 1, detecting unit of the present invention is measured the distance on the relative ground of little frame in real time, and the signal that detects is sent to control module; Control module passes to hydraulic system after with information processing; The indentation of control hydraulic cylinder push rod, executing agency realizes regulating land wheel and swings around twisted point under the telescopic action of hydraulic cylinder push rod; Thereby adjust the trench digging degree of depth of disc type plough indirectly; Therefore can be implemented in the field condition conservation tillage face of land complicated and changeable keeps certain trench digging degree of depth, avoids dark or shallow excessively ditching operation, the real-time regulated sowing depth; Improve the seed level uniformity, can improve percentage of seedgermination, promote plant growth, increase crop yield.2, the present invention is provided with a compression spring in the vertical vertical plane of the symmetry of four-bar mechanism, thus can guarantee the disc type plough enough go into soil pressure.
Description of drawings
Fig. 1 is structure of the present invention and FB(flow block)
Fig. 2 is a main TV structure sketch map of the present invention
Fig. 3 is a plan structure sketch map of the present invention
Fig. 4 is the structural representation of hydraulic system of the present invention
Embodiment
Below in conjunction with accompanying drawing and embodiment to originally carrying out detailed description.
Like Fig. 1～shown in Figure 3, the present invention includes frame 1, detecting unit 2, control module 3, hydraulic system 4, executing agency 5 and disc type plough 6.Frame 1 comprises crossbeam 11, four-bar mechanism 12 and little frame 13, and little frame 13 links to each other with crossbeam 11 through four-bar mechanism 12.
Detecting unit 2 comprises connecting rod 21, detects land wheel 22 and linear variable displacement transducer 23.Detect land wheel 22 and be hinged on the little frame 13 through connecting rod 21, in vertical vertical plane, detection land wheel 22 is followed actual surface and is freely swung.Linear variable displacement transducer 23 upper ends are installed on the little frame 13; The lower end links to each other with detection land wheel 22 wheel shafts; And the upper and lower end installation site is in same vertical vertical plane, measures the absolute distance that detects land wheel 22 wheel shafts and installation site, linear variable displacement transducer 23 top in real time, and will detect data and be sent to control module 3; Its vertical component adds the radius that detects land wheel 22, can record the vertical range between the little frame 13 and the face of land.
The input of control module 3 is connected with the signal output part of detecting unit 2, and output is connected with hydraulic system 4.Control module 3 receives the detection data that detecting unit 2 sends, and data are carried out collection analysis, confirms the output control signal and is sent to hydraulic system 4.
As shown in Figure 4, hydraulic system 4 comprises fuel tank 41, hydraulic pump 42, filter 43, manometer 44, proportional reversing valve 45, hydraulic cylinder 46, overflow valve 47 and radiator 48.Hydraulic pump 42 is from fuel tank 41 oil suctions, for hydraulic system 4 provides power.Filter 43 is used for collecting contamination particle in the fluid.Manometer 44 detects the trunk roads oil pressure of hydraulic system 4.Proportional reversing valve 45 is through the corresponding electromagnet of excitation, and control fluid flows to, and realizes the control flow through the aperture of importing different current signal change restrictions.The rodless cavity oil-feed of hydraulic cylinder 46 or rod chamber oil-feed, thereby the indentation of control push rod.Overflow valve 47 mainly is to the hydraulic system level pressure, carries out safeguard protection.Radiator 48 can be controlled the oil temperature, and is stable to guarantee the oil temperature.Under the excitation of control signal, fluid gets into hydraulic cylinder 46 through fuel tank 41, hydraulic pump 42, filter 43, proportional reversing valve 45,5 actions of driving execution mechanism, and oil return is got back to fuel tank 41 through radiator 48 coolings.When no control signal excitation or hydraulic system 4 hypertonia, fluid is got back to fuel tank 41 through fuel tank 41, hydraulic pump 42, filter 43, overflow valve 47, radiator 48.
Executing agency 5 comprises L type bar 51, falsework 52 and regulates land wheel 53.L type bar 51 1 ends and hydraulic cylinder 46 push rods are hinged, and the other end links to each other with falsework 52, and are hinged on the little frame 13 in corner.Falsework 52 front ends and little frame 13 are hinged and connected, and link to each other with L type bar 51 at intermediate open position one chute, regulate land wheel 53 and are fixed on falsework 52 rear ends.Under the telescopic action of hydraulic cylinder 46 push rod indentations, L type bar 51 drives falsework 52 around the twisted point swing, regulates land wheel 53 along with swinging up and down, and realizes adjusting the height of regulating land wheel 53 relatively little frames 13.
In the foregoing description, be provided with a compression spring 14 in the vertical vertical plane of the symmetry of four-bar mechanism 12, with guarantee disc type plough 6 enough go into soil pressure.
In the foregoing description, control module 3 can adopt single-chip microcomputer, and the signal output part of the linear variable displacement transducer 23 in the input of single-chip microcomputer and the detecting unit 2 is connected, and output is connected with proportional reversing valve 45 in the hydraulic system 4.Single-chip microcomputer receives the signal that linear variable displacement transducer 23 is sent, and data are carried out collection analysis, confirms the output control information, 45 operations of control ratio reversal valve.
When the present invention used, its operation principle was: 1) detecting unit 2 is measured the distance on little frame 13 relative ground in real time, and the signal that detects is sent to control module 3; 2) control module 3 is with passing to hydraulic system 4 after the information processing, 45 operations of control ratio reversal valve, the indentation of control hydraulic cylinder 46 push rods; 3) executing agency 5 realizes regulating land wheel 53 around the twisted point swing under the telescopic action of hydraulic cylinder 46 push rods, adjusts the trench digging degree of depth of disc type plough 6 indirectly.
The present invention only describes with the foregoing description; The structure of each parts, the position is set and connects and all can change to some extent; On the basis of technical scheme of the present invention; All improvement and equivalents of individual component being carried out according to the principle of the invention all should not got rid of outside protection scope of the present invention.
Claims (10)
1. disc type plough trench digging degree of depth automatic control system, it is characterized in that: it comprises frame, detecting unit, control module, hydraulic system, executing agency and disc type plough; Said frame comprises crossbeam, four-bar mechanism and little frame, and said little frame links to each other with crossbeam through four-bar mechanism, and said disc type plough is fixed on the said little frame;
Said detecting unit comprises connecting rod, detects land wheel and linear variable displacement transducer; Said detection land wheel through said rod hinge connection on said little frame; Said linear variable displacement transducer upper end is installed on the said little frame, and the lower end links to each other with said detection land wheel wheel shaft;
The input of said control module is connected with the signal output part of said detecting unit, and output is connected with said hydraulic system;
Said executing agency comprises L type bar, falsework and adjusting land wheel; The output of said L type bar one end and said hydraulic system is hinged, and the other end links to each other with said falsework, and is hinged on the said little frame in corner; Said falsework front end and said little frame are hinged and connected, and link to each other with said L type bar at intermediate open position one chute, and said adjusting land wheel is fixed on the said falsework rear end.
2. a kind of disc type plough trench digging degree of depth automatic control system as claimed in claim 1; It is characterized in that: said hydraulic system comprises fuel tank, hydraulic pump, filter, manometer, proportional reversing valve, hydraulic cylinder, overflow valve and radiator, and the push rod of said hydraulic cylinder connects said L type bar one end.
3. a kind of disc type plough trench digging degree of depth automatic control system as claimed in claim 1 is characterized in that: in the vertical vertical plane of the symmetry of said four-bar mechanism a compression spring is set.
4. a kind of disc type plough trench digging degree of depth automatic control system as claimed in claim 2 is characterized in that: in the vertical vertical plane of the symmetry of said four-bar mechanism a compression spring is set.
5. like claim 2 or 3 or 4 described a kind of disc type plough trench digging degree of depth automatic control systems; It is characterized in that: said control module adopts single-chip microcomputer; The signal output part of the linear variable displacement transducer in the input of said single-chip microcomputer and the said detecting unit is connected, and the output of said single-chip microcomputer is connected with proportional reversing valve in the said hydraulic system; Said single-chip microcomputer receives the detection data that said linear variable displacement transducer is sent, and data are carried out collection analysis, the operation of confirming to export control signal and controlling said proportional reversing valve.
6. like claim 1 or 2 or 3 or 4 described a kind of disc type plough trench digging degree of depth automatic control systems, it is characterized in that: in vertical vertical plane, said detection land wheel is followed actual surface and is freely swung.
7. a kind of disc type plough trench digging degree of depth automatic control system as claimed in claim 5, it is characterized in that: in vertical vertical plane, said detection land wheel is followed actual surface and is freely swung.
8. like claim 1 or 2 or 3 or 4 described a kind of disc type plough trench digging degree of depth automatic control systems; It is characterized in that: the absolute distance of installation site, said detection land wheel wheel shaft and said linear variable displacement transducer upper end and is measured in real time in the upper and lower end installation site of said linear variable displacement transducer in same vertical vertical plane.
9. a kind of disc type plough trench digging degree of depth automatic control system as claimed in claim 5; It is characterized in that: the absolute distance of installation site, said detection land wheel wheel shaft and said linear variable displacement transducer upper end and is measured in real time in the upper and lower end installation site of said linear variable displacement transducer in same vertical vertical plane.
10. a kind of disc type plough trench digging degree of depth automatic control system as claimed in claim 7; It is characterized in that: the absolute distance of installation site, said detection land wheel wheel shaft and said linear variable displacement transducer upper end and is measured in real time in the upper and lower end installation site of said linear variable displacement transducer in same vertical vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102173223A CN101946576B (en) | 2010-06-23 | 2010-06-23 | Automatic control system for opening depth for disk-type opener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102173223A CN101946576B (en) | 2010-06-23 | 2010-06-23 | Automatic control system for opening depth for disk-type opener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101946576A CN101946576A (en) | 2011-01-19 |
| CN101946576B true CN101946576B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102173223A Expired - Fee Related CN101946576B (en) | 2010-06-23 | 2010-06-23 | Automatic control system for opening depth for disk-type opener |
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| CN104697572B (en) * | 2015-03-25 | 2017-01-25 | 中国农业大学 | Opener blockage monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2348556Y (en) * | 1998-11-18 | 1999-11-17 | 石家庄农业机械股份有限公司 | Lifting/lowering implement for trench digger of sowing machine |
| JP3803019B2 (en) * | 2000-08-21 | 2006-08-02 | 富士通株式会社 | Control program development support device |
| CN2894216Y (en) * | 2006-05-31 | 2007-05-02 | 张晓龙 | Profiling ditching device for seeder |
| CN100576118C (en) * | 2007-09-28 | 2009-12-30 | 北京农业信息技术研究中心 | A kind of variable fertilization control system and method |
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2010
- 2010-06-23 CN CN2010102173223A patent/CN101946576B/en not_active Expired - Fee Related
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| CN101946576A (en) | 2011-01-19 |
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