CN107816464A - A kind of Pneumatic type paddy planter fluid power system - Google Patents
A kind of Pneumatic type paddy planter fluid power system Download PDFInfo
- Publication number
- CN107816464A CN107816464A CN201711227059.4A CN201711227059A CN107816464A CN 107816464 A CN107816464 A CN 107816464A CN 201711227059 A CN201711227059 A CN 201711227059A CN 107816464 A CN107816464 A CN 107816464A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- valve
- sowing
- motor
- fertilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/06—Seeders combined with fertilising apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
Abstract
The present invention relates to a kind of Pneumatic type paddy planter fluid power system, the executive component of elevating folding system is two lifting hydraulic cylinders；The rodless cavity oil circuit of two hydraulic cylinders is provided with hydraulic control one-way valve, for locking the position of hydraulic cylinder；The dynamical element of Foldable hydraulic system shares elevating folding system gear pump with jacking system, and the direction control element of Foldable hydraulic system is 3-position 4-way hand-operated direction valve, and the system deploys sowing frame in operation, increases breadth, folds sowing frame in transition；Sowing fertilizer hydraulic system includes sowing hydraulic circuit and fertilizer hydraulic circuit, speed probe monitors the rotating speed of gerotor motor and feeds back to comparing element in real time, rotating speed that comparing element provides instruction element and actual measurement rotating speed are compared, and then feedback adjustment signal is to electric controller.The present invention simplifies seeding system using the scheme using " concentrating seeding, strength to evenly distribute "；The foldable expansion of frame is sowed, working width is big, efficiency high, is readily transported.
Description
Technical field
The present invention relates to a kind of Pneumatic type paddy planter fluid power system, belong to agricultural machinery technological field.
Background technology
Novel intelligent agricultural machinery turns into the new focus of agricultural mechanical field research, and hydraulic technique is as connection machinery and electricity
The bridge of sub- technology, intelligent field of agricultural machinery, which is constantly obtaining, applies and development.Compared with the country, developed countries exist
The advanced technologies such as mechanical-electrical-hydraulic integration are widely used on agricultural modernization equipment, the maneuverability of agricultural machinery is further increased, relaxes
Adaptive, convenience and intelligent level, technical support is provided for accurate agricultural.
Rice Cropping mode is divided into live and two big technical systems of transplanting, and paddy planter is on the basis for saving seedlings link
On, ensure emergence rate and rice yield, significantly reduce Rice Cropping cost.Following technology be present and lack in existing seed-sowing machine
Fall into：1) operation line number is few, and breadth is small, and operating efficiency is low；2) seeding system transmission is complicated, and the amount of broadcasting can not be adjusted, intelligent journey
Spend low；3) sowing fertilizer multiple working can not be realized；4) operation quality is poor.
The content of the invention
The purpose of the present invention is folded using the mentality of designing of " concentrating seeding combination air-flow to evenly distribute ", design sowing frame
Jacking system, increase working width, improve operating efficiency, for different planting conditions and date of seeding to rice growing density, fertilising
The difference requirement of amount, the uniform and stable intelligent strength integrated arranging variable fertilization sowing equipment of research and development discharge capacity, realizes seed manure certainly
Variable operation is adapted to, meanwhile, for accurate control application rate and dose, closed loop feedback control is introduced to correct error.
The present invention takes following technical scheme：
A kind of Pneumatic type paddy planter fluid power system, including elevating folding hydraulic system, sow fertilizer hydraulic pressure system
System and blower fan drive hydraulic system principle, tractor PTO output shafts 1；The tractor PTO output shafts 1 respectively with elevating folding system
Gear pump 2, sowing fertilizer gear pump 3, blower fan driving gear pump 32 connect；The elevating folding system gear pump 2 respectively with liter
Drop hydraulic system connects with Foldable hydraulic system；Described hydraulic system for lifting includes 3-position 4-way proportional reversing valve 7, three four
Logical proportional reversing valve 7 is connected with flow divider-combiner 8, and the 3-position 4-way proportional reversing valve 7 is to detect ground using height sensor
Face is to the height for sowing frame, and the adjustment that automatically controls of passing ratio valve keeps sowing frame high with ground when ground ups and downs
Spend constant, 3-position 4-way proportional reversing valve 7 is M type Median Functions, off-load when being placed in middle position for jacking system；Elevating folding
The executive component of system is two lifting hydraulic cylinders 14,15, and the flow divider-combiner ensures that two lifting hydraulic cylinders were rising
There is certain synchronization accuracy in journey；The rodless cavity oil circuit of two hydraulic cylinders is provided with hydraulic control one-way valve, for locking hydraulic pressure
The position of cylinder；The dynamical element of the Foldable hydraulic system shares elevating folding system gear pump 2 with jacking system, and it performs member
Part is two Foldable hydraulic cylinders, and the direction control element of Foldable hydraulic system is 3-position 4-way hand-operated direction valve 18, described three
Four-way hand-operated direction valve 18 is M type Median Functions, off-load when being placed in middle position for folding system, and the system makes to broadcast in operation
Kind frame expansion, increases breadth, folds sowing frame in transition, be readily transported；The sowing fertilizer hydraulic system includes sowing
Hydraulic circuit and fertilizer hydraulic circuit, both share sowing fertilizer gear pump 3, and the instruction that both are each provided with being sequentially connected is first
Part, comparing element, electric controller, proportional reversing valve, gerotor motor, speed probe, speed probe on-line monitoring gerotor motor
Rotating speed and feed back to comparing element, the rotating speed that comparing element provides instruction element and actual measurement rotating speed are compared, and then instead
Regulate signal is presented to electric controller.The blower fan drive hydraulic system principle causes rotating speed to exist using high gear motor driving blower fan
Continuously adjustabe in certain limit；Described blower fan drive hydraulic system principle dynamical element is blower fan driving gear pump 32, by tractor
PTO output shafts 1 drive, and the flow control element of system is proportional velocity regulating valve 37, and described proportional velocity regulating valve can be switched political loyalty by one
Stream valve and a uniform-pressure-drop valve are in series, and by changing the electric current of proportion electro-magnet and control orifice aperture, then adjust
Save the rotating speed of fan drive motor 38.
Further, the maximum operating speed of two lifting hydraulic cylinders of the hydraulic system for lifting is 0.10m/s, institute
Flow divider-combiner split ratio is stated as 1:1.
Further, the maximum operating speed of Foldable hydraulic cylinder is 0.15m/s.
Further, described sowing motor and fertilizer motor are gerotor motor, and both variable speed scopes are 75-
The control element of 300rpm, peak torque 30Nm, described sowing and fertilizer hydraulic circuit is the commutation of 2/2-way ratio
Valve, described 2/2-way proportional reversing valve has control loop break-make with changing the double action of uninterrupted, in the valve
Oil inlet side is provided with uniform-pressure-drop valve, constant for control valve pressure at two ends difference so that the flow of passing ratio reversal valve
Only relevant with size of current and unrelated with load change, proportional reversing valve is according to the speed of travel of tractor and the setting of user
Application rate, dose control motor rotary speed, realize that intellectuality is precisely controlled.
Further, described blower fan drive hydraulic system principle is using high gear motor driving blower fan, and rotating speed is existed
Continuously adjustabe in certain limit；Described blower fan driving hydraulic motor is gear motor, and the rotational speed regulation scope of motor is 2000-
3000rpm。
The beneficial effects of the present invention are：
1) the Pneumatic type seed-sowing machine is driven using hydraulic system, and flexible arrangement is simple in construction, and reliability is high.
2) application rate and defertilizing amount are electrodeless adjustable, can be required to provide suitable sowing according to the speed of travel, different work
Amount and dose, are easy to automatically controlled, and intelligence degree is high.
3) seed-sowing machine simplifies seeding system using the scheme of " concentrating seeding, strength to evenly distribute ".
4) the foldable expansion of frame is sowed, working width is big, efficiency high, is readily transported.
Brief description of the drawings
Fig. 1 is Pneumatic type paddy planter fluid power system schematic diagram of the present invention.
Fig. 2 is sowing, fertilizer feedback control system schematic diagram.
In figure：1- tractor PTO output shaft 2- elevating folding system gear pumps 3- sowing fertilizer system gears pump, 4- first
Hydralic pressure gauge, the hydralic pressure gauges of 30- second, the first stop valves of hydralic pressure gauge 5- of 35- the 3rd, the stop valves of 29- second, the stop valves of 34- the 3rd,
6- first filters, the filters of 28- second, the filters of 36- the 3rd, 7- 3-position 4-ways proportional reversing valve, 8- flow divider-combiners, 9-
First one-way throttle valve, the one-way throttle valves of 10- second, the one-way throttle valves of 11- the 3rd, the hydraulic control one-way valves of 12- first, 13- second
The lifting hydraulic cylinders of hydraulic control one-way valve 14- first, the first safety valves of 15- the second lifting hydraulic cylinder 16-, the safety valves of 17- second, 31-
3rd safety valve, safety valve 18- 3-position 4-way hand-operated direction valve the first Foldable hydraulics of the 19- cylinders of 33- the 4th, 20- second fold liquid
Cylinder pressure, 21- sowings drive motor the first 2/2-ways of 22- proportional reversing valve, 26- the second 2/2-way proportional reversing valves 23- the
One uniform-pressure-drop valve, the uniform-pressure-drop valves of 25- second, 24- fuel tanks, 32- blower fans driving gear pump, 37- proportional velocity regulating valves, 38- wind
Machine drives hydraulic motor.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 show present hydraulic system schematic diagram.
Tractor PTO is the power source of whole hydraulic system, different according to hydraulic pump, hydraulic system can be divided into lifting,
Foldable hydraulic system, sowing, fertilizer hydraulic system and blower fan drive hydraulic system principle.
Described lifting, the dynamical element of Foldable hydraulic system are elevating folding system gear pump 2, elevating folding system tooth
The output end of wheel pump 2 is connected with the hydralic pressure gauge 4 of filter 6 and first, and described filter is metal oil filter, filtering accuracy
Height, the direction control element 3-position 4-way proportional reversing valve 7 of the oil-out connection jacking system of filter, system are passed using height
Sensor detection ground is to the height for sowing frame, and the adjustment that automatically controls of passing ratio valve keeps sowing when ground ups and downs
Frame is constant with ground level, and then ensures the operation quality of seed-sowing machine, when the 3-position 4-way proportional reversing valve 7 is in left position,
Lifting hydraulic cylinder rodless cavity oil-feed, sowing frame rises, and when reversal valve is in right position, hydraulic cylinder rod chamber oil-feed, sows under frame
Drop, when reversal valve is in middle position, hydraulic system for lifting off-load, the first lifting hydraulic cylinder 14, the nothing of the second lifting hydraulic cylinder 15
Rod cavity side is connected with flow divider-combiner 8, and flow divider-combiner split ratio is 1:1, it is used primarily to ensure that two hydraulic cylinders are rising
During there is certain synchronization accuracy, three one-way throttle valves 9,10,11 are mainly used in controlling the flow on single direction, after
And the speed of hydraulic cylinder is controlled, prevent from exceeding the speed limit, two hydraulic control one-way valves 12,13 are mainly used in being locked in lifting hydraulic cylinder a certain
In height, the first safety valve 16 is used for the safe pressure for setting jacking system.The direction control element of described folding system is
3-position 4-way hand-operated direction valve 18, system hydraulic oil direction by controlling manually, when the reversal valve is in left position, Foldable hydraulic cylinder
Rodless cavity oil-feed, during in right position, Foldable hydraulic cylinder rod chamber oil-feed, during in middle position, system unloaded, prevent caloric value mistake
Greatly.
Described sowing, the dynamical element of fertilizer hydraulic system are sowing fertilizer system gear pump 3, sow fertilizer system tooth
The output end of wheel pump 3 is connected with the second filter 28 and the second hydralic pressure gauge 30, and the filter oil-out is divided into two, connected respectively
Connect sowing, fertilizer hydraulic system.Sowing, the flow control element of fertilizer hydraulic system are all uniform-pressure-drop valve 23,25 and two
The series connection of two logical proportional reversing valves 22,26, described uniform-pressure-drop valve are used to ensure that proportional reversing valve both ends pressure difference is constant, institute
The 2/2-way proportional reversing valve stated has control loop break-make with changing the double action of uninterrupted, when reversal valve is in the right side
During position, hydraulic circuit disconnects, and sowing, fertilizer motor do not work, and when reversal valve is in left position, flow through the flow of reversal valve by leading to
The size of current control of proportion electro-magnet is crossed, proportional reversing valve is sowed according to the speed of travel of tractor and the setting of user
Amount, dose control motor rotary speed, realize that intellectuality is precisely controlled, described sowing drive motor 21, fertilizer drive motor 27
It is all gerotor motor.3rd safety valve 31 is used to set sowing, the safe pressure of fertilizer hydraulic system.
The dynamical element of described blower fan drive hydraulic system principle is blower fan driving gear pump 32, blower fan driving gear pump 32
Output end is connected with filter 36, and the oil-out connection proportional velocity regulating valve 37 of filter, described proportional velocity regulating valve is by one
Variable throttle valve and a uniform-pressure-drop valve are in series, by changing the electric current of proportion electro-magnet and control orifice aperture,
Then motor rotary speed is adjusted, described fan drive motor is high gear motor, and the 4th safety valve 33 broadcasts blower fan for setting
The safe pressure of drive hydraulic system principle.
Fig. 2 show present invention sowing, fertilizer feedback control system schematic diagram.
System sends instruction by instruction original paper, passes sequentially through comparing element, electric controller controls proportional reversing valve, and ratio changes
To valve by changing the electric current of proportion electro-magnet and turn of control orifice aperture, then control sowing motor and fertilizer motor
Speed, sow motor and fertilizer motor and be mounted on a speed probe, for detecting motor output shaft rotating speed and data are anti-
Feed comparing element, comparing element sends finger by comparing the error between setting speed and actual speed, comparative example reversal valve
Order, motor rotary speed is finely tuned, realize intelligent accurate control.
Above is the preferred embodiments of the present invention, those of ordinary skill in the art can also carry out various changes on this basis
Change or improve, on the premise of the total design of the present invention is not departed from, these conversion or improvement should all belong to application claims guarantor
Within the scope of shield.
Claims (5)
- A kind of 1. Pneumatic type paddy planter fluid power system, it is characterised in that：Including elevating folding hydraulic system, fertilizer hydraulic system and blower fan drive hydraulic system principle, tractor PTO output shafts are sowed (1)；The tractor PTO output shafts (1) respectively with elevating folding system gear pump (2), sowing fertilizer gear pump (3), blower fan Driving gear pump (32) connects；The elevating folding system gear pump (2) is connected with hydraulic system for lifting and Foldable hydraulic system respectively；Described hydraulic system for lifting includes 3-position 4-way proportional reversing valve (7), and 3-position 4-way proportional reversing valve (7) collects with shunting Valve (8) connection is flowed, the 3-position 4-way proportional reversing valve (7) is that the height for extremely sowing frame in ground is detected using height sensor, And the adjustment that automatically controls of passing ratio valve keeps sowing frame and ground level constant when ground ups and downs, 3-position 4-way ratio Example reversal valve (7) is M type Median Functions, off-load when being placed in middle position for jacking system；The executive component of elevating folding system For two lifting hydraulic cylinders (14,15), it is certain that the flow divider-combiner ensures that two lifting hydraulic cylinders have in uphill process Synchronization accuracy；The rodless cavity oil circuit of two hydraulic cylinders is provided with hydraulic control one-way valve, for locking the position of hydraulic cylinder；The dynamical element of the Foldable hydraulic system shares elevating folding system gear pump (2), its executive component with jacking system For two Foldable hydraulic cylinders, the direction control element of Foldable hydraulic system is 3-position 4-way hand-operated direction valve (18), described three Four-way hand-operated direction valve (18) is M type Median Functions, off-load when being placed in middle position for folding system, and the system makes in operation Frame expansion is sowed, increases breadth, folds sowing frame in transition, is readily transported；The sowing fertilizer hydraulic system includes sowing hydraulic circuit and fertilizer hydraulic circuit, and both share sowing fertilizer gear pump (3), and both are each provided with the instruction element, comparing element, electric controller, proportional reversing valve, gerotor motor, the rotating speed that are sequentially connected Sensor, speed probe monitor the rotating speed of gerotor motor and feed back to comparing element in real time, and comparing element carries instruction element The rotating speed of confession and actual measurement rotating speed are compared, and then feedback adjustment signal is to electric controller.The blower fan drive hydraulic system principle causes rotating speed continuously may be used within the specific limits using high gear motor driving blower fan Adjust；Described blower fan drive hydraulic system principle dynamical element is blower fan driving gear pump (32), is driven by tractor PTO output shafts (1) Dynamic, the flow control element of system is proportional velocity regulating valve (37), and described proportional velocity regulating valve is by a variable throttle valve and one Uniform-pressure-drop valve is in series, by changing the electric current of proportion electro-magnet and control orifice aperture, then regulation blower fan driving Motor (38) rotating speed.
- 2. Pneumatic type paddy planter fluid power system as claimed in claim 1, it is characterised in that：The raise-lower hydraulic system The maximum operating speed of two lifting hydraulic cylinders of system is 0.10m/s, and the flow divider-combiner split ratio is 1:1.
- 3. Pneumatic type paddy planter fluid power system as claimed in claim 1, it is characterised in that：Foldable hydraulic cylinder is most Big operating rate is 0.15m/s.
- 4. Pneumatic type paddy planter fluid power system as claimed in claim 1, it is characterised in that：Described sowing motor It is gerotor motor with fertilizer motor, both variable speed scopes are 75-300rpm, and peak torque 30Nm, described broadcasts The control element of kind and fertilizer hydraulic circuit is 2/2-way proportional reversing valve, and described 2/2-way proportional reversing valve has Control loop break-make and the double action for changing uninterrupted, are provided with uniform-pressure-drop valve in the oil inlet side of the valve, are used for Control valve pressure at two ends difference is constant so that the flow of passing ratio reversal valve is only relevant with control electric current size and changes with load Unrelated, proportional reversing valve controls motor rotary speed according to the speed of travel of tractor and setting application rate, the dose of user, real Existing intellectuality is precisely controlled.
- 5. Pneumatic type paddy planter fluid power system as claimed in claim 1, it is characterised in that：Described blower fan driving Hydraulic system makes its rotating speed continuously adjustabe within the specific limits using high gear motor driving blower fan, flow speed control valve；Described wind Machine driving hydraulic motor is gear motor, and the rotational speed regulation scope of motor is 2000-3000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711227059.4A CN107816464B (en) | 2017-11-29 | 2017-11-29 | Hydraulic driving system of pneumatic type paddy planter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711227059.4A CN107816464B (en) | 2017-11-29 | 2017-11-29 | Hydraulic driving system of pneumatic type paddy planter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107816464A true CN107816464A (en) | 2018-03-20 |
| CN107816464B CN107816464B (en) | 2023-10-20 |
Family
ID=61605024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711227059.4A Active CN107816464B (en) | 2017-11-29 | 2017-11-29 | Hydraulic driving system of pneumatic type paddy planter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107816464B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757616A (en) * | 2018-07-13 | 2018-11-06 | 江苏大学 | A kind of panzer synchronous hydraulic jacking system with levelling function |
| CN108843635A (en) * | 2018-08-17 | 2018-11-20 | 农业部南京农业机械化研究所 | A kind of hydraulic transmission control system and control method of Hills tractor |
| CN109488658A (en) * | 2019-01-15 | 2019-03-19 | 岭南师范学院 | A kind of hydraulic control system for dynamic seeding apparatus test-bed |
| CN110637570A (en) * | 2019-09-20 | 2020-01-03 | 农业农村部南京农业机械化研究所 | Control method of full hydraulic drive high-speed transplanter chassis |
| WO2021213399A1 (en) * | 2020-04-23 | 2021-10-28 | 丰疆智能科技股份有限公司 | Electronically controlled hydraulic system and automatic adjustment method therefor |
| CN114946354A (en) * | 2022-06-16 | 2022-08-30 | 农业农村部南京农业机械化研究所 | Variable rate fertilizer injection unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716251A1 (en) * | 1994-11-30 | 1996-06-12 | SAMHYDRAULIK S.p.A. | Control system for variable displacement hydraulic pumps in automotive type closed circuit hydrostatic drives |
| CN105179343A (en) * | 2015-10-27 | 2015-12-23 | 中国矿业大学 | Multi-cylinder synchronous energy-saving efficient hydraulic lifting system and method |
| CN205389333U (en) * | 2016-03-20 | 2016-07-27 | 商旭东 | Hydraulic drive rotary cultivator |
| CN207673637U (en) * | 2017-11-29 | 2018-07-31 | 农业部南京农业机械化研究所 | A kind of Pneumatic type paddy planter fluid power system |
-
2017
- 2017-11-29 CN CN201711227059.4A patent/CN107816464B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716251A1 (en) * | 1994-11-30 | 1996-06-12 | SAMHYDRAULIK S.p.A. | Control system for variable displacement hydraulic pumps in automotive type closed circuit hydrostatic drives |
| CN105179343A (en) * | 2015-10-27 | 2015-12-23 | 中国矿业大学 | Multi-cylinder synchronous energy-saving efficient hydraulic lifting system and method |
| CN205389333U (en) * | 2016-03-20 | 2016-07-27 | 商旭东 | Hydraulic drive rotary cultivator |
| CN207673637U (en) * | 2017-11-29 | 2018-07-31 | 农业部南京农业机械化研究所 | A kind of Pneumatic type paddy planter fluid power system |
Non-Patent Citations (1)
| Title |
|---|
| 蒙杨超;董自安;肖泽桦;王珂;: "曲臂式高空作业车液压系统设计及研究", 流体传动与控制, no. 01 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757616A (en) * | 2018-07-13 | 2018-11-06 | 江苏大学 | A kind of panzer synchronous hydraulic jacking system with levelling function |
| CN108843635A (en) * | 2018-08-17 | 2018-11-20 | 农业部南京农业机械化研究所 | A kind of hydraulic transmission control system and control method of Hills tractor |
| CN108843635B (en) * | 2018-08-17 | 2023-10-17 | 农业部南京农业机械化研究所 | Hydraulic transmission control system and control method for hilly and mountain tractor |
| CN109488658A (en) * | 2019-01-15 | 2019-03-19 | 岭南师范学院 | A kind of hydraulic control system for dynamic seeding apparatus test-bed |
| CN109488658B (en) * | 2019-01-15 | 2023-08-25 | 岭南师范学院 | Hydraulic control system for dynamic seed metering device test bed |
| CN110637570A (en) * | 2019-09-20 | 2020-01-03 | 农业农村部南京农业机械化研究所 | Control method of full hydraulic drive high-speed transplanter chassis |
| CN110637570B (en) * | 2019-09-20 | 2020-12-11 | 农业农村部南京农业机械化研究所 | Control method of full hydraulic drive high-speed transplanter chassis |
| WO2021213399A1 (en) * | 2020-04-23 | 2021-10-28 | 丰疆智能科技股份有限公司 | Electronically controlled hydraulic system and automatic adjustment method therefor |
| CN114946354A (en) * | 2022-06-16 | 2022-08-30 | 农业农村部南京农业机械化研究所 | Variable rate fertilizer injection unit |
| CN114946354B (en) * | 2022-06-16 | 2023-02-28 | 农业农村部南京农业机械化研究所 | Variable rate fertilizer injection unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107816464B (en) | 2023-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107816464A (en) | A kind of Pneumatic type paddy planter fluid power system | |
| CN207673637U (en) | A kind of Pneumatic type paddy planter fluid power system | |
| US6851377B2 (en) | Variable rate meter drive system | |
| CN106900234B (en) | Driving system of rice transplanter | |
| AU2018247293B2 (en) | Agricultural Working Device | |
| CN107593047A (en) | A kind of convenient seeder combined with fertilising apparatus of the ecological agriculture | |
| CN104541687B (en) | Precision drilling mechanism | |
| CN102848914A (en) | Hydraulic continuously-variable drive axle assembly | |
| CN202979674U (en) | Cutter-windrower for applicable to oilseed rape harvesting | |
| CN102860163B (en) | Suspended rice sowing machine sowing amount automaton | |
| CN103168542B (en) | Double-variant hydraulic stepless speed regulating variable fertilizer distributor and speed regulating system thereof | |
| CN103547812B (en) | Auxiliary drive for the utensil that does work | |
| CN201805697U (en) | Novel whole bar type sugarcane combined planting machine | |
| CN207744354U (en) | A kind of intelligence control hydraulic-driven aspirated-air type winter wheat broadcasting device | |
| CN208605586U (en) | The large-scale stepless adjustable system of cropper feeding unit | |
| CN110073767A (en) | A kind of orchard organic fertilizer-chemical fertilizer layering ditching-fertilizing earthing all-in-one machine | |
| CN216087583U (en) | Air pressure stable regulation and control system of air-suction type potato planter | |
| CN201047364Y (en) | Tandem type multiple motor hydraulic circuit system | |
| CN206790973U (en) | A kind of drive system of rice transplanter | |
| CN107950103A (en) | A kind of intelligence control hydraulic-driven aspirated-air type winter wheat broadcasting device | |
| CN203675585U (en) | Hydraulic driving mechanism for draught fan of air-aspiration type precision planter | |
| CN212225913U (en) | Variable speed control system of straw returning machine | |
| CN113875361A (en) | Air pressure stability regulation and control system and regulation and control method of air-suction type potato seeder | |
| CN113575080A (en) | Intelligent water and fertilizer integrated water-saving irrigation system based on Internet of things technology | |
| CN111946681A (en) | Anti-sliding method for traveling device and anti-sliding hydraulic control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |