EP1605746A1 - Landwirtschaftliche bodenbearbeitungs- und/oder bestellkombination - Google Patents
Landwirtschaftliche bodenbearbeitungs- und/oder bestellkombinationInfo
- Publication number
- EP1605746A1 EP1605746A1 EP04718282A EP04718282A EP1605746A1 EP 1605746 A1 EP1605746 A1 EP 1605746A1 EP 04718282 A EP04718282 A EP 04718282A EP 04718282 A EP04718282 A EP 04718282A EP 1605746 A1 EP1605746 A1 EP 1605746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- way valve
- valve
- soil cultivation
- order combination
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
- A01C7/201—Mounting of the seeding tools
- A01C7/205—Mounting of the seeding tools comprising pressure regulation means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/14—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements drawn by animals or tractors
- A01B63/24—Tools or tool-holders adjustable relatively to the frame
- A01B63/32—Tools or tool-holders adjustable relatively to the frame operated by hydraulic or pneumatic means without automatic control
-
- 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
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
Definitions
- the invention relates to an agricultural tillage implement and / or order combination according to the preambles of claims 1 and 14.
- Such an agricultural tillage implement and / or order combination is described, for example, in German Offenlegungsschrift 26 44 069.
- This soil tillage implement or the order combination has a plurality of hydraulic cylinders connected in parallel in a quasi-closed system, the hydraulic cylinders being connected to one another in such a way that they form a pressure or level compensation system. After the initial assembly or repair, the cylinders of the hydraulic system must be vented before use. In the known system, this can only be carried out in relatively complex manual work.
- this agricultural tillage device or order combination has a plurality of hydraulic cylinders which are combined to form a level and pressure compensation system and which are connected to tillage elements. Furthermore, an adjusting cylinder having an adjusting device is arranged in this hydraulic system, by means of which the force transmitted to the tillage elements can be changed and adjusted.
- the invention has for its object to provide a way for flushing the hydraulic system for the pressure and level compensation system in order to remove the air in the system in a simple and safe manner.
- This object is achieved according to the invention in that the line connecting the individual hydraulic cylinders is connected to a further line, and in that a 2/2-way valve and at least one flow valve are arranged in this line, and in that the shut-off valve arranged in the first line is shown as the second / 2-way valve is formed.
- the hydraulic system can be flushed in a simple manner by corresponding actuation of the directional valves, so that the air present in the system is flushed out. Hydraulic fluid is introduced into the system via one line, while it flows back via the other line. The air is flushed out of the system. This means that the system is simply vented.
- a 4/3-way valve is additionally arranged in the upstream and in the further line.
- valves are electrically actuable valves and can be actuated by means of an electronic control device.
- the 2/2-way valves and the 4/2-way valve or 4/3-way valve are used by means of the electronic control device can be operated alternately according to a predetermined or programmed switching sequence.
- the features of claim 6 or 7 are provided.
- the cylinders can be filled with oil up to a certain height level in order to adjust the tillage elements to the correct height level.
- the actuating cylinder is designed as a double-acting hydraulic cylinder, and that a further line leading to a hydraulic system is connected to the actuating cylinder.
- An advantageous embodiment of the hydraulic system results from the fact that the further line is connected to the line leading from the hydraulic system to the hydraulic cylinders assigned to the tillage elements, and that a return line is provided between the actuating cylinder and the hydraulic system.
- the calibration system is used in a further hydraulic circuit, which has a flushing system, it is provided that the further line is connected to the line leading from the hydraulic system to the hydraulic cylinders assigned to the tillage elements, and that a directional valve arranged between the actuating cylinder and the hydraulic system return line equipped with a check valve is provided.
- a 2/2-way valve is arranged in the line guiding the hydraulic cylinder such that a 4/2-way valve is connected upstream of the directional control valves.
- valves are electrically operated valves and can be operated by means of an electronic control device.
- the 3/2-way valves and the 4/2-way valve can be actuated alternately according to a predetermined or programmed switching sequence by means of the electronic control device.
- the characterizing features of claim 14 are provided.
- the cylinders can be filled with oil up to a certain height level in order to adjust the tillage elements to the correct height level.
- the actuating cylinder is designed as a double-acting hydraulic cylinder, and that a further line leading to a hydraulic system is connected to the actuating cylinder.
- An advantageous embodiment of the hydraulic system results from the fact that the further line is connected to the line leading from the hydraulic system to the hydraulic cylinders assigned to the tillage elements is that a return line is provided between the control valve and the hydraulic system.
- the calibration system is inserted in a further hydraulic circuit, which has a winding system, it is provided that the further line is connected to the line leading from the hydraulic system to the hydraulic cylinders assigned to the tillage elements, and that a directional valve arranged between the actuating cylinder and the hydraulic system is connected Return line equipped with a check valve is provided.
- a 2/2-way valve is arranged in the line leading from the hydraulic system to the hydraulic cylinder and that a 4/2-way valve is connected upstream of the directional control valves.
- valves are electrically actuable valves and can be actuated by means of an electronic control device.
- the 3/2-way valves and the 4/2-way valve can be actuated alternately according to a predetermined or programmed switching sequence by means of the electronic control device.
- the line connecting the individual hydraulic cylinders is connected to a further line, and that a 2/2-way valve and at least one flow-through valve are arranged in this line, and that the shut-off valve arranged in the first line is designed as a 2/2-way valve.
- the hydraulic system can be vented or flushed in a simple manner.
- the hydraulic system can be flushed in a simple manner by corresponding actuation of the directional valves, so that the air present in the system is flushed out. Hydraulic fluid is introduced into the system via one line, while it flows back via the other line. The air is flushed out of the system. This means that the system is simply vented.
- a 4/3-way valve is additionally arranged in the upstream and in the further line.
- valves are electrically actuable valves and can be actuated by means of an electronic control device.
- the 2/2-way valves and the 4/2-way valve or 4/3-way valve alternate according to a predetermined or programmed switching sequence can be actuated.
- Fig. 2 shows another hydraulic circuit diagram of a
- FIG. 3 shows a further hydraulic circuit diagram of an agricultural machine with a pressure compensation system and a possibility “for calibrating” the level compensation system
- Fig. 4 shows another hydraulic circuit diagram of a pressure
- FIG. 5 shows a further hydraulic circuit diagram with two pressure and level compensation systems with the possibility of calibrating and flushing the pressure compensation system.
- hydraulic cylinders 1 can be arranged in the pressure and level compensation system. These hydraulic cylinders 1 are integrated, for example, in a tillage machine or a seeder, the tillage tools or floor rollers being supported on the floor, as is described, for example, in DE 101 41 232 AI.
- the hydraulic cylinders 1 are connected to one another via lines 2, so that mutual height and load compensation of the tillage tools, such as coulters, soil rollers etc., is possible. Furthermore, the hydraulic cylinders 1 are connected to the hydraulic system 5 via the two lines 3, 4. In the line 3 leading from the hydraulic system 5 to the hydraulic cylinders 1, a 2/2-way valve 6 is arranged, which can be actuated electrically. Also from the further line 4 returning from the hydraulic cylinders 1 to the hydraulic system 5 is also a 2/2-way valve 7, which is also arranged to be electrically operable. The 4/2-way valve 8 is connected upstream of these two valves 6 and 7 in lines 3 and 4 in front of the hydraulic system 5. This directional valve 8 is also electrically operated. The individual valves 6, 7, 8 are connected to an electronic control and regulating device 10 via lines 9.
- valves 6, 7, 8 are switched via the control and regulating device 10 by pressing the corresponding button 11.
- the valve 6 is brought into position 6a, and the valve 7 into position 7a and the valve 8 into position 8a, so that oil from the hydraulic system 5 through the directional control valves 6, 7, 8 and the lines 2 and 3 and through the line 4 can flow back to the hydraulic system 5.
- the air is flushed out of the cylinders 1 of the compensation system by this oil flow.
- the oil gets back into the tank of the hydraulic system 5.
- the hydraulic circuit diagram according to FIG. 2 differs from the hydraulic circuit diagram according to FIG. 1 by a different design of the 4/2-way valve 8. In terms of operation, this hydraulic circuit diagram does not differ from that according to FIG. 1, so that the description of the diagram from Fig. 1 also applies to the plan of Fig. 2.
- FIG. 3 shows a hydraulic circuit diagram for calibrating the hydraulic cylinders of a pressure and level compensation system of a tillage or sowing machine arranged in the hydraulic line 2, as described in DE 101 41 232 AI.
- the hydraulic cylinders 1 are assigned to tillage elements or coulters that are mutually height-adjustable.
- the hydraulic cylinders 1 are connected to one another by means of lines 2. This supports the tillage elements or coulters. Furthermore, the same soil pressure prevails under each coulter or tillage element.
- the hydraulic cylinders 1 are filled with oil up to a certain height level in order to lower one
- Soil cultivation element to deliver hydraulic fluid and absorb oil when lifting a soil cultivation element. It is important to precisely define the hydraulic fluid level.
- the calibration system works as follows:
- the lines 2 are connected to the hydraulic system 5 via the line 3.
- the lines 2 are connected via the line 12 to a chamber of a calibration cylinder.
- 3/2-way valve 15 is then in line 12, which can be actuated and connected to the control device 10 via the line 9.
- the 2/2-way valve 6 and the 4/2-way valve 8 are arranged in the line 3.
- the line 16 is connected between the directional valve 15 and the line 4 returning to the hydraulic system 5 via the directional valve 8.
- the line 18 connected to line 3 is arranged on the other chamber 17.
- the valves 6, 8 are switched via the control and regulating device 10 f after pressing the button 19.
- the valve 6 is brought into position 6a, the valve 8 and into this position 8a, so the hydraulic fluid can flow from the hydraulic system 5 through the directional control valves 6 and 8 into the compensation system, at the same time the 3/2-way valve 15 is brought into position 15a
- hydraulic fluid flows through lines 2 and 3 into the hydraulic cylinders 1 and via lines 3 and 18 into the chamber 17 of the calibration cylinder 14. The process is continued until the hydraulic cylinders 1 extended and the calibration cylinder 14 is completely retracted.
- the bottom side of the stroke volume of the chamber 13 of the calibration cylinder 14 corresponds to the oil volume that has to be removed from the compensation system in order to bring the machine to the correct height level.
- the calibration cylinder 14 must be retracted beforehand as described above. After filling the chamber 17 of the calibration cylinder 14 and the chambers of the
- the valves 6 and 8 are brought into the neutral position 6b and 8b, ie the position shown in FIG. 3.
- the 3/2-way valve 15 is brought into the switching position 15b. Due to the pressure generated by the machine's own weight, which acts on the hydraulic cylinders 1 of the compensation system, The oil partially flows from the hydraulic cylinders 1 into the bottom chamber 13 of the calibration cylinder 14. After the chamber 13 of the calibration cylinder 14 has been completely filled, the valve 15 is brought into the switching position 15a, as shown in FIG. 3. The compensation system is thus closed, as shown in FIG. 3, and the calibration process is completed.
- FIG. 4 a level and pressure compensation system is shown for the hydraulic cylinders assigned to the tillage elements, such as coulters and soil roller, which can be moved independently of one another.
- Three hydraulic cylinders 1 are shown in the illustration, but it is possible to arrange an unlimited number of hydraulic cylinders accordingly without further notice.
- the hydraulic cylinders 1 are connected to one another via lines 2 and to a hydraulic system 5 via the two lines 3 and 4.
- the 2/2-way valve 6 is arranged in line 3, while the 2/2-way valve 7 is arranged in line 4. Both directional control valves 6 and 7 can be actuated electrically.
- a 4/3-way valve 20 is connected upstream of these 2/2-way valves 6 and 7.
- the line 12 leading to the one chamber 13 of a calibration cylinder 14 is connected to line 2 of the pressure compensation system.
- the 3/2-way valve 15, which can be actuated electrically is connected.
- the other chamber 17 of the calibration cylinder 14 is connected via line 18 to line 3 of the hydraulic system.
- line 16, in which a check valve 21 is arranged is connected between the 3/2-way valve 15 assigned to the calibration cylinder 14 and the line 4 arranged between the 2/2-way valve 7 and the 4/3-way valve 20.
- This check valve only lets a flow out of the Direction 22 of the 3/2-way valve 15 assigned to the calibration cylinder 14 in the direction of the line 4.
- the individual directional control valves 6, 7, 15, 20 are connected to the electrical or electronic control and regulating device 23 via lines 9. Using the system shown, the pressure compensation system can be flushed as well as calibrated.
- the valves 6, 8 are switched via the control and regulating device 10 ′′ after actuation of the button 19.
- the valve 6 is brought into position 6a, the valve 8 and into this position 8a, so the hydraulic fluid can flow from the hydraulic system 5 through the directional control valves 6 and 8 into the compensation system, at the same time the 3/2-way valve 15 is brought into position 15a
- hydraulic fluid flows through lines 2 and 3 into the hydraulic cylinders 1 and via lines 3 and 18 into the chamber 17 of the calibration cylinder 14. The process is continued until the hydraulic cylinders 1 extended and the calibration cylinder 14 is completely retracted.
- the bottom side of the stroke volume of the chamber 13 of the calibration cylinder 14 corresponds to the oil volume that has to be removed from the compensation system in order to bring the machine to the correct height level.
- the calibration cylinder 14 must be retracted beforehand, as described above.
- the valves 6 and 8 are brought into the neutral position 6b and 8b, ie the position shown in FIG. 3.
- the 3/2-way valve 15 is brought into the switching position 15b.
- the oil Due to the pressure created by the machine's own weight, which acts on the hydraulic cylinders 1 of the compensation system, the oil partially flows from the hydraulic cylinders 1 into the bottom-side chamber 13 of the calibration cylinder 14. After the chamber 13 of the calibration cylinder 14 has been completely filled, the valve 15 is brought into the switching position 15a, as shown in FIG. 3. The compensation system is thus closed, as shown in FIG. 3, and the calibration process is completed.
- valves 6, 7, 8 are switched via the control and regulating device 10 by pressing the corresponding button 11.
- the valve 6 is brought into position 6a, and the valve 7 into position 7a and the valve 8 into position 8a, so that oil from the hydraulic system 5 through the directional control valves 6, 7, 8 and the lines 2 and 3 and through the line 4 can flow back to the hydraulic system 5.
- the air is flushed out of the cylinders 1 of the compensation system by this oil flow.
- the oil gets back into the tank of the hydraulic system 5.
- the hydraulic system according to FIG. 5 is in principle a double pressure compensation system 24 and 25 according to the hydraulic circuit diagram according to FIG. 4, the individual pressure compensation systems 24 and 25 being connected to one another via lines 26 and 27 and being mutually blocked by correspondingly arranged check valves in these lines , These check valves 28 together enable the hydraulic systems 24 and 25 to be flushed and calibrated, but in the work function the check valves 28 that are arranged create the two pressure and level compensation systems 24 and 25, which work completely separately from one another.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10313175A DE10313175A1 (de) | 2003-03-25 | 2003-03-25 | Landwirtschaftliche Bodenbearbeitungs- und/oder Bestellkombination |
| DE10313176A DE10313176A1 (de) | 2003-03-25 | 2003-03-25 | Landwirtschaftliches Bodenbearbeitungsgerät und/oder Bestellkombination |
| DE10313175 | 2003-03-25 | ||
| DE10313176 | 2003-03-25 | ||
| PCT/EP2004/002360 WO2004084616A1 (de) | 2003-03-25 | 2004-03-08 | Landwirtschaftliche bodenbearbeitungs- und/oder bestellkombination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1605746A1 true EP1605746A1 (de) | 2005-12-21 |
Family
ID=33099277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04718282A Withdrawn EP1605746A1 (de) | 2003-03-25 | 2004-03-08 | Landwirtschaftliche bodenbearbeitungs- und/oder bestellkombination |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1605746A1 (de) |
| WO (1) | WO2004084616A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2866046C (en) | 2013-12-11 | 2018-06-19 | Cnh Industrial Canada, Ltd. | Apparatus and method for air removal in tillage implements using three way valves |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2644069A1 (de) | 1976-09-30 | 1978-04-06 | Becker Karl Masch | Saatbeetkombination mit hydraulischem niveauausgleich |
| US4354688A (en) * | 1981-03-03 | 1982-10-19 | International Harvester Co. | Hydraulic circuit for a tractor drawn implement having remote variable height selector |
| US5427182A (en) * | 1993-10-08 | 1995-06-27 | Deere & Company | Pressure relieving circuit for a series cylinder depth control |
| US5957218A (en) * | 1997-11-18 | 1999-09-28 | Deere & Company | Electrohydraulic control of implement lift cylinders |
| US6000315A (en) * | 1998-05-04 | 1999-12-14 | Deere & Company | Lift control for implement frame |
| DE10141232A1 (de) * | 2001-08-23 | 2003-03-06 | Amazonen Werke Dreyer H | Sämaschine |
-
2004
- 2004-03-08 EP EP04718282A patent/EP1605746A1/de not_active Withdrawn
- 2004-03-08 WO PCT/EP2004/002360 patent/WO2004084616A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004084616A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004084616A1 (de) | 2004-10-07 |
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Legal Events
| Date | Code | Title | Description |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: STEEN, RUEDIGER Inventor name: MIX, ARTHUR Inventor name: CHRISTOPHERSEN, NIELS |
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| 17Q | First examination report despatched |
Effective date: 20100917 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: STEEN, RUEDIGER Inventor name: MIX, ARTHUR Inventor name: CHRISTOPHERSEN, NIELS |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20110628 |