CN105165186A - Repressive force control apparatus for wheeled repression device - Google Patents
Repressive force control apparatus for wheeled repression device Download PDFInfo
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- CN105165186A CN105165186A CN201510491104.1A CN201510491104A CN105165186A CN 105165186 A CN105165186 A CN 105165186A CN 201510491104 A CN201510491104 A CN 201510491104A CN 105165186 A CN105165186 A CN 105165186A
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Abstract
The present invention discloses a repressive force control apparatus for wheeled repression device. The control apparatus comprises a pressure sensor, a controller, and a repressive force adjustment device comprising a solenoid valve and a hydraulic oil cylinder. The control apparatus can solve the problems of poor repressive force consistency and uneasy control of the adjustment of poor repressive force value due to poor adaptability of mechanical copying mechanism to earth surface irregularities.
Description
Technical Field
The invention relates to the field of agricultural intelligent equipment, in particular to a compacting force control device suitable for a wheel type compacting device.
Background
The compacting is an important link in the crop sowing process. The seeds are tightly contacted with the soil by pressing, which is favorable for the seeds to absorb water and germinate. The pressing can provide a good growth environment for crops, ensure the better emergence rate of the crops and enhance the capability of the crops to resist natural disasters. The main factor influencing the compacting effect is the compacting force of the covering soil. The pressing force is insufficient, and the phenomenon of root hanging is easy to occur after the seeds germinate; when the compacting force is too large, surface soil is easy to harden, and the emergence of seedlings at the top soil of seeds is blocked. In conclusion, excessive or insufficient compacting force affects the rate of emergence and thus the yield of the crops. Therefore, strict requirements are imposed on the magnitude of the pressing force of sowing, for example, the wheat in Huang-Huai-Hai area is controlled to be 0.2-0.4 kg/square centimeter during the flat sowing of wheat, and the ridge seed is controlled to be 0.4-0.5 kg/square centimeter during the ridge planting. Seeding suppression still has strict requirements to the profiling of land roller except having the requirement to the suppression dynamics, and the profiling is effectual, can improve the uniformity of suppression dynamics to improve the uniformity that the crop grows, and then improve the crop quality.
Wheel-type compacting devices such as flat wheels, convex wheels, concave wheels and conical wheels are generally preferred. The general pressing device comprises main parts such as a clamping plate, a pressing beam, a guide block, a support arm, a pressing wheel carrier, a pressure spring, a pin shaft, a pull rod, a scraping plate, a pressing wheel and the like. The profile modeling mode is mostly mechanical type monomer profile modeling, and the suppression dynamics is adjusted through the pressure spring, has simple structure, dependable performance, and the compaction is strong, cost of manufacture low grade advantage.
For the existing wheel type compacting device, the consistency of compacting force is poor due to the poor adaptability of the mechanical profiling mechanism to the unevenness of the ground surface. In addition, in the process of compacting after sowing, because the soil moisture content of different plots is inconsistent, the requirement on compacting force is inconsistent, and the magnitude of the compacting force is adjusted, so that the force value is not easy to control.
Disclosure of Invention
The invention aims to provide a compacting force control device suitable for a wheel type compacting device, which can solve the problems of poor compacting force consistency and difficulty in controlling the adjustment of the compacting force value of the conventional compacting device due to poor adaptability of a mechanical profiling mechanism to the unevenness of the ground surface.
To this end, the present invention provides a rolling force control device suitable for a wheel type rolling device, including:
the device comprises a pressing force adjusting device, a pressure sensor and a controller; wherein,
the pressing force adjusting device comprises an electromagnetic valve and a hydraulic oil cylinder, one end of a rod cavity of the hydraulic oil cylinder is connected with a pressing device of the wheel type pressing device, and the other end of the rod cavity of the hydraulic oil cylinder is connected with a rack of a furrow opener of the wheel type pressing device;
the pressure sensor is arranged on one side of a rod cavity of a hydraulic oil cylinder of the suppression force adjusting device, is connected with the controller, and is used for acquiring pressure information in the rod cavity in real time and transmitting the pressure information to the controller;
the controller is connected suppression dynamics adjusting device's solenoid valve is used for receiving the pressure information of pressure sensor transmission calculates the suppression ware is to the actual pressure value of pressing of earth's surface, according to actual pressure value of pressing and predetermined target pressure value of pressing calculate the controlled quantity, according to the controlled quantity, through control suppression dynamics adjusting device's solenoid valve drive the piston rod of suppression dynamics adjusting device's hydraulic cylinder stretches out or retracts, adjusts the suppression dynamics of suppression ware to the earth's surface, make its with error between the target pressure value of pressing is at predetermined numerical range.
According to the compacting force control device suitable for the wheeled compacting device, the controller collects information of the pressure sensor in real time in the normal seeding and compacting process, calculates the actual compacting force value, calculates the control quantity according to the actual compacting force value and the preset target compacting force value, and realizes that the error between the pressure value of the compacting device on the earth surface and the target compacting force value is kept in the preset numerical range by adjusting the pressure in the compacting force adjusting device according to the control quantity.
Drawings
Fig. 1 is a schematic block diagram of a pressing force control apparatus for a wheel type pressing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a wheel type press apparatus including a part of the structure of the press force control apparatus of the present invention;
fig. 3 is a flowchart illustrating the operation and processing of a controller according to another embodiment of the present invention, which is applicable to a rolling force control apparatus for a wheeled rolling machine;
fig. 4 is a flow chart of the operation of the automatic mode.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic block structure diagram of an embodiment of a rolling force control device suitable for a wheel type rolling device, fig. 2 is a schematic structural diagram of a wheel type rolling device including a partial structure of the rolling force control device, fig. 2 is a rolling force adjusting device 1, fig. 2 is a pressure sensor, fig. 3 is a parallel four-bar copying mechanism, fig. 4 is a rolling machine, fig. 5 is a furrow opener, and fig. 6 is a depth wheel, and this embodiment discloses a rolling force control device suitable for a wheel type rolling device, which includes:
the device comprises a pressing force adjusting device 1, a pressure sensor 2 and a controller 7; wherein,
the compacting force adjusting device 1 comprises an electromagnetic valve and a hydraulic oil cylinder, one end of a rod cavity of the hydraulic oil cylinder is connected with a compactor 4 of the wheel compacting device, and the other end of the rod cavity of the hydraulic oil cylinder is connected with a frame of a furrow opener 5 of the wheel compacting device;
the pressure sensor 2 is arranged on one side of a rod cavity of a hydraulic oil cylinder of the suppression force adjusting device, is connected with the controller 7, and is used for acquiring pressure information in the rod cavity in real time and transmitting the pressure information to the controller 7;
controller 7 connects suppression dynamics adjusting device 1's solenoid valve is used for receiving the pressure information of pressure sensor 2 transmission calculates the suppression dynamics is to the actual suppression pressure value of earth's surface, according to actual suppression pressure value and predetermined target suppression pressure value calculate the controlled quantity, according to the controlled quantity, through control suppression dynamics adjusting device 1's solenoid valve drive suppression dynamics adjusting device 1's hydraulic cylinder's piston rod stretches out or retracts, adjusts the suppression dynamics of suppression ware to the earth's surface, make it with error between the target suppression pressure value is at predetermined numerical range.
According to the compacting force control device suitable for the wheeled compacting device, the controller collects information of the pressure sensor in real time in the normal seeding and compacting process, calculates the actual compacting force value, calculates the control quantity according to the actual compacting force value and the preset target compacting force value, and realizes that the error between the pressure value of the compacting device on the earth surface and the target compacting force value is kept in the preset numerical range by adjusting the pressure in the compacting force adjusting device according to the control quantity.
The present invention relates to a compactor for more than one single sowing unit, but the compactor for one single sowing unit will be described as an example. The controller may include a controller panel (a manual/automatic mode key, a ballast increase/decrease key, a manual mode light, an automatic mode light, a target ballast value increase indicator light, and a target ballast value decrease indicator light may be provided on the controller panel) for manual setting. As shown in fig. 3, the flow of the operation and processing of the controller is as follows:
1. controller initialization, including controller initialization, automatic mode flag bit reset, manual mode lamp on, automatic mode lamp off; the pressing force adjusting and increasing indicator light is turned off, and the pressing force adjusting and decreasing indicator light is turned off;
2. reading a target pressure-bearing force value, and displaying the target pressure-bearing force value;
3. detecting whether a key is pressed:
3.1 No key is pressed, judge the automatic mode identification position bit:
3.1.1 if the automatic mode identification position is set, executing the automatic mode;
3.1.2 if the automatic mode identification position is set, the target suppression force value increase indicator lamp is turned off, and the suppression force decrease indicator lamp is turned off;
3.2 there is a key press, responding to the corresponding key action:
3.2.1 if the pressing force increasing key is pressed, the target pressing force value is automatically increased by one, the target pressing force value is stored, the target pressing force value increasing indicating lamp is turned on, and the target pressing force value decreasing indicating lamp is turned off;
3.2.2 if the pressing force reducing key is pressed, the target pressing force value is reduced by one, the target pressing force value is stored, the target pressing force value increasing indicating lamp is turned off, and the target pressing force value reducing indicating lamp is turned on;
3.2.3 if the manual mode key is pressed, resetting the automatic mode identification bit, turning on the manual mode lamp and turning off the automatic mode lamp;
3.2.4 if the automatic mode key is pressed, the automatic mode identification position is set, the manual mode lamp is turned off, and the automatic mode lamp is turned on;
4. and (5) continuing to execute the step 2 after the control cycle is executed.
The detailed flow of the automatic mode (for example, fig. 4 is a work flow chart of the automatic mode) is as follows:
5. reading a measured value of the pressure sensor, and reading a target pressure-bearing value;
6. executing a pressure feedback control algorithm between the land roller and the ground surface;
7. outputting the control quantity to a pressing force adjusting device;
8. and storing the pressure value between the compacting machine and the ground surface.
Alternatively, in another embodiment of the rolling force control device suitable for the wheeled rolling device, one end of the rod cavity of the hydraulic oil cylinder of the rolling force adjusting device is fixedly connected to the wheeled rolling device.
Optionally, in another embodiment of the pressing force control device applicable to the wheel type pressing device, one end of the rodless cavity of the hydraulic oil cylinder of the pressing force adjusting device is connected to the frame of the furrow opener through a connecting rod.
Alternatively, in another embodiment of the present invention, which is applicable to the rolling force control device of a wheel type rolling device, if the wheel type rolling device is a multi-row device, the rolling force of the rolling device of each single wheel type rolling device is controlled by one rolling force control device.
In addition, the suppression force is manually adjusted through the pressure spring, the suppression force adjusting process of the multi-row seeder is complicated, and in the embodiment of the invention, the suppression force control device is arranged for each single wheel type suppression device of the multi-row suppression device consisting of the single wheel type suppression devices, so that the suppression force of a plurality of seeding single bodies can be simultaneously adjusted, and the problem of complicated adjustment process of the multi-row seeding suppression force is solved.
Alternatively, in another embodiment of the invention applied to the rolling force control apparatus of the wheel type rolling apparatus,
and the controller is used for calculating the error between the actual pressure value and the target pressure value and calculating the control quantity according to the error.
Alternatively, in another embodiment of the invention applied to the rolling force control apparatus of the wheel type rolling apparatus,
the controller is further used for receiving a setting instruction of a user and setting the target ballast pressure value.
Optionally, in another embodiment of the rolling force control device applied to the wheeled rolling device, the controller is further configured to display the actual rolling force value and the target rolling force value in real time.
In the embodiment of the invention, the actual pressure value and the target pressure value are displayed on the controller (such as a display device of the controller) in real time, so that the user can conveniently view the actual pressure value and the target pressure value.
Compared with the prior art, the invention has the following beneficial effects:
1) the provided method for controlling the pressing force based on the pressure sensor realizes accurate control of the pressing force on the basis of technical principles and system construction methods, and can effectively solve the problem of poor consistency of the pressing force caused by poor adaptability of a mechanical profiling mechanism to surface unevenness.
2) The automatically controlled scheme that provides has realized that a plurality of seeding monomers suppression dynamics are adjusted simultaneously, has solved the loaded down with trivial details difficult problem of multirow seeding suppression dynamics adjustment process.
3) Through the accurate adjustment suppression dynamics of input target suppression dynamics value, solve the difficult problem of accuse of the adjustment of current suppression device suppression dynamics value.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (7)
1. The utility model provides a suppression dynamics controlling means suitable for wheeled suppression device which characterized in that includes:
the device comprises a pressing force adjusting device, a pressure sensor and a controller; wherein,
the pressing force adjusting device comprises an electromagnetic valve and a hydraulic oil cylinder, one end of a rod cavity of the hydraulic oil cylinder is connected with a pressing device of the wheel type pressing device, and the other end of the rod cavity of the hydraulic oil cylinder is connected with a rack of a furrow opener of the wheel type pressing device;
the pressure sensor is arranged on one side of a rod cavity of a hydraulic oil cylinder of the suppression force adjusting device, is connected with the controller, and is used for acquiring pressure information in the rod cavity in real time and transmitting the pressure information to the controller;
the controller is connected suppression dynamics adjusting device's solenoid valve is used for receiving the pressure information of pressure sensor transmission calculates the suppression ware is to the actual pressure value of pressing of earth's surface, according to actual pressure value of pressing and predetermined target pressure value of pressing calculate the controlled quantity, according to the controlled quantity, through control suppression dynamics adjusting device's solenoid valve drive the piston rod of suppression dynamics adjusting device's hydraulic cylinder stretches out or retracts, adjusts the suppression dynamics of suppression ware to the earth's surface, make its with error between the target pressure value of pressing is at predetermined numerical range.
2. The rolling force control device for a wheeled rolling device according to claim 1,
one end of a rod cavity of a hydraulic oil cylinder of the compacting force adjusting device is fixedly connected to the wheel type compacting machine.
3. A suppression force control device suitable for a wheeled suppression device according to claim 1, wherein one end of a rodless cavity of a hydraulic oil cylinder of the suppression force adjusting device is connected to a frame of the furrow opener through a connecting rod.
4. A rolling force control device suitable for a wheeled rolling device according to claim 1, wherein if the wheeled rolling device is a multi-row device, the rolling force of each individual wheeled rolling device is controlled by one rolling force control device.
5. The rolling force control device for a wheeled rolling device according to claim 1,
and the controller is used for calculating the error between the actual pressure value and the target pressure value and calculating the control quantity according to the error.
6. The rolling force control device for a wheeled rolling device according to claim 1,
the controller is further used for receiving a setting instruction of a user and setting the target ballast pressure value.
7. The rolling force control device for a wheeled rolling device according to claim 1,
the controller is further used for displaying the actual pressure value and the target pressure value in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491104.1A CN105165186A (en) | 2015-08-11 | 2015-08-11 | Repressive force control apparatus for wheeled repression device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491104.1A CN105165186A (en) | 2015-08-11 | 2015-08-11 | Repressive force control apparatus for wheeled repression device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109429731A (en) * | 2018-09-30 | 2019-03-08 | 吉林省农业科学院 | One kind hugging careless device |
| CN109862775A (en) * | 2016-10-20 | 2019-06-07 | 精密种植有限责任公司 | Force Control of Press Wheels and Closing Wheels for Pneumatic Planters |
| CN110214498A (en) * | 2019-07-26 | 2019-09-10 | 山东农业大学 | A kind of corn drill suppression device and method |
| CN112369209A (en) * | 2020-11-17 | 2021-02-19 | 中国农业大学 | Stalk pressing device for assisting high-pressure water jet in stalk cutting and blocking prevention under no-tillage condition |
| CN114651563A (en) * | 2022-03-24 | 2022-06-24 | 中国农业大学 | Deep ditch crushing and covering soil device based on closed-loop pressure regulation |
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| JP2010193773A (en) * | 2009-02-25 | 2010-09-09 | Iseki & Co Ltd | Agricultural working machine |
| US20120048159A1 (en) * | 2010-08-30 | 2012-03-01 | Cnh America Llc | Manual backup system for controlling fluid flow to cylinders within an agricultural implement |
| CN102948283A (en) * | 2011-08-24 | 2013-03-06 | 徐州鑫田农机研究所 | Garlic planting machine with spoon |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862775A (en) * | 2016-10-20 | 2019-06-07 | 精密种植有限责任公司 | Force Control of Press Wheels and Closing Wheels for Pneumatic Planters |
| CN109429731A (en) * | 2018-09-30 | 2019-03-08 | 吉林省农业科学院 | One kind hugging careless device |
| CN109429731B (en) * | 2018-09-30 | 2021-07-30 | 吉林省农业科学院 | Hug careless device |
| CN110214498A (en) * | 2019-07-26 | 2019-09-10 | 山东农业大学 | A kind of corn drill suppression device and method |
| CN110214498B (en) * | 2019-07-26 | 2024-04-05 | 山东农业大学 | Compacting device and method for corn planter |
| CN112369209A (en) * | 2020-11-17 | 2021-02-19 | 中国农业大学 | Stalk pressing device for assisting high-pressure water jet in stalk cutting and blocking prevention under no-tillage condition |
| CN114651563A (en) * | 2022-03-24 | 2022-06-24 | 中国农业大学 | Deep ditch crushing and covering soil device based on closed-loop pressure regulation |
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Application publication date: 20151223 |
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