EP1720397A1 - Versorgungssystem - Google Patents
VersorgungssystemInfo
- Publication number
- EP1720397A1 EP1720397A1 EP05707593A EP05707593A EP1720397A1 EP 1720397 A1 EP1720397 A1 EP 1720397A1 EP 05707593 A EP05707593 A EP 05707593A EP 05707593 A EP05707593 A EP 05707593A EP 1720397 A1 EP1720397 A1 EP 1720397A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- supply system
- tractor
- consumers
- implement
- 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- Withdrawn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
- 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
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
Definitions
- the invention relates to a supply system for hydraulically actuated consumers mounted on a tractor or the like, of at least one working device according to the preamble of patent claim 1.
- Agricultural tractors or tractors are used to pull or operate attached implements or attachments, such as a plow, baler, loading and silage wagon, or mower, which are hydraulically controlled
- Actuators are operated. These actuators are supplied with pressure medium by the tractor hydraulics.
- the standard solution for up to four consumers to be connected is the direct and separate connection of each consumer to a hydraulic socket of one control valve of the tractor.
- a hydraulic pump, a central computer and control valves assigned to a consumer are arranged on the tractor.
- the output connections of the control valves can be made via the hydraulic couplings can be connected to the consumers arranged on the trailer.
- the control valves for the pressure medium supply to the consumers are controlled via the central computer.
- Such a circuit can only be implemented in equipment with many consumers with a considerable amount of equipment.
- Another problem is that when supplying pressure medium to different work tools, care must be taken that the hydraulic system of the work tool matches that of the tractor, so that no unnecessary energy losses occur.
- a supply system is known from DE 101 07 139 AI, in which a central valve block is provided on the implement attached to the tractor, in the present case a plow, via which at least one consumer of the implement can be supplied with pressure medium.
- the central valve block is connected to a tractor-side pump and a tractor-side tank via a bus system and hydraulic couplings.
- the invention has for its object to provide a supply system through which a large number of consumers of a working device with minimal device engineering effort and low
- the pressure medium volume flow setting on the tractor side takes place via a central valve, via which several consumers of a line can be supplied with pressure medium.
- the pressure medium volume flow distribution is carried out on the implement side with a distribution valve arrangement, via which one of the consumers connected to the central valve can be supplied with pressure medium, while the connections to the other consumers of the line are shut off.
- the volume flow adjusting and volume flow distributing elements are thus separated, the volume flow adjustment using the central valve on the tractor and the volume flow distribution, ie the pressure medium supply to a selected consumer using the distribution valve arrangement arranged on the implement.
- a plurality of consumers are connected to the volume-flow-adjusting tractor-side central valve, so that virtually any number of consumers can be supplied via this central valve.
- the distribution valve arrangement is preferably controlled electrically or electronically as a function of control signals which are emitted by at least one control device.
- one or more control devices can be arranged on the tractor and / or on the working device, the signal transmission to the tractor or to the working device preferably taking place via a bus system.
- the signal transmission is not only possible via cable connections, but wireless solutions can also be implemented via radio (Bluetooth).
- Bluetooth radio
- the distribution valve arrangement has at least one
- Switching valve via which a flow or return line to the assigned consumer can be shut off or opened.
- the distribution valve arrangement assigned to each double-acting consumer preferably has in each case a switching valve for shutting off or opening the inlet or return line. In principle, however, it is also sufficient for double-acting consumers
- each central valve is assigned a flow and return line on the device side, to which several consumers are connected in parallel in the manner described above.
- Each of the consumers is assigned a distribution valve arrangement - preferably two switching valves in the case of a double-acting consumer - via which one consumer can be connected to the flow and return line and the other consumers can be blocked.
- each central valve has a variable orifice plate and an associated one
- Pressure compensator for setting the pressure medium volume flow and with control edges for setting the pressure medium flow direction.
- Figure 1 is a circuit diagram of a supply system for a tractor on which a working device, such as a plow or a baler is attached or attached and
- Figure 2 shows a simplified embodiment of a supply system.
- the supply system 1 shown in FIG. 1 is composed of a part 2 on the tractor side and a part 4 on the implement side, with an electrical and hydraulic connection of the implement being attached to or attached to the tractor tractor-side and implement side part 2, 4 of the supply system.
- the supply system 1 shown is designed as a load-sensing system. As mentioned at the beginning, however, other concepts, for example a regulation of a constant pressure medium volume flow or a constant pressure medium pressure, can also be implemented.
- the part 2 of the supply system 1 on the tractor side has an LS pump 6, via which pressure medium can be drawn in from a pressure medium tank T of the tractor.
- the pressure connection of the LS pump 6 is connected to an input connection of an LS valve block 8, which in the exemplary embodiment shown is composed of a plurality of valve segments 8a, 8b, 8c. Each of these valve segments 8a, 8b, 8c is assigned to a large number of consumers and has at least two working connections A, B, which are connected via hydraulic working lines 10, 12 to hydraulic sockets (couplings) 14, 16 arranged on the tractor.
- two consumers 14, 16 of the implement can be supplied with pressure medium via the valve segment 8a.
- more than these two consumers 15, 17 can also be connected to the valve segment 8a and additional consumers can also be connected to the other two valve segments 8b, 8c.
- a double branch line is connected to the hydraulic sockets 14, 16, through which a feed line 18 and a return line 20 are formed, via which the consumers 14, 16 can be supplied with pressure medium.
- the flow and return lines 18, 20 are when mounting or Attach the implement via coupling elements 22, 24 to the hydraulic sockets 14, 16 connected.
- the two consumers 15, 17 are each connected via a flow branch line 22 or 23 and a return branch line 24 or 25 to the flow line 18 or the return line 20.
- the actuation of the electromagnets 30 of the distribution valves 26, 27, 28, 29 takes place via a control device 32 which is arranged on the implement in the exemplary embodiment shown.
- the electromagnets 30 of the distribution valves 26, 27, 28 and 29 are energized via signal lines 34 connected to the signal connections of the control unit 32 (only the signal line 34 of the distribution valve 29 is provided with a reference symbol in FIG. 1), always with a consumer 15, 17 associated distribution valves 26, 28;
- FIG. 1 shows a variant according to which the sensors (pressure, current, stroke, volume flow, etc.) 36 are connected to the control unit 32, in which the sensor signals are processed and, if necessary, in actuating signals for actuating the consumers 15, 17 and the LS pump 6 are implemented.
- a control unit 38 can also be provided on the tractor, as shown in FIG. 1, which is connected to the control unit 32 on the implement side and to the distribution valves 26, 27, 28, 29 and the LS valve block 8 via a bus system 40.
- the or some of the sensors 42 can also be connected to the tractor-side control unit 38 via the bus system 40.
- sensors 44 on the tractor side the signals of which are supplied directly by the control unit 38.
- sensors 46 arranged on the tractor can also be connected via bus system 40 to control unit 32 on the implement side or control unit 38 on the tractor side.
- the LS valve block is controlled directly via the signals output by the control unit 38 or via the bus system 40 depending on the control unit 32.
- a pressure medium volume flow request is transmitted to the tractor-side hydraulic system via the bus 40 and this is fulfilled by the LS pump 6 and the LS valve block 8.
- the orifice plate is brought into an open position to set a predetermined pressure medium volume flow and, for example, the supply line 18 with the LS pump 6 and the return line 20 with the Tank T connected.
- the electromagnets 30, for example the distribution valves 27, 29, are energized via the control devices 32 or 38, so that they are brought into their open position.
- the two distribution valves 26, 28 facing the hydraulic motor 15 remain in the closed position.
- a cylinder space 48 of the differential cylinder 17 is supplied with pressure medium via the feed line 18, while pressure medium is displaced from an annular space 50 via the return line 20 and returned to the tank T - the piston rod of the differential cylinder 17 extends.
- the two distribution valves 27, 29 are also brought into their through position and the directional part of the valve segment 8a is reversed so that the line 20 then becomes the flow line and the line 18 becomes the return line.
- control device architecture as in the case of control devices 32, 38 on the tractor side can be used in such a control of one of several consumers of a line.
- the two distribution valves 26, 28 remain in their closed position, so that the hydraulic motor 15 or other consumers are not supplied with pressure medium. If a further consumer of the implement is to be controlled in parallel, this had to be connected to the valve segment 8b or 8c in the same way as described above.
- a single-acting consumer In the event that a single-acting consumer is to be actuated, it can be connected to the flow or return line 18, 20 via a single distribution valve.
- the main advantage of the circuit according to the invention is that several consumers can be assigned to a single valve segment 8a, 8b, 8c, so that the cost-intensive individual connection of the consumers to a hydraulic socket is eliminated.
- several consumers In the event that several consumers are controlled simultaneously, they can be connected to further valve segments on the tractor valve side, which are supplied with pressure medium via a common LS pump 6. I.e. According to the invention, the valve segments on the tractor side are used several times, the volume flow distribution being carried out by the very cheap distributor valves 26, 27, 28 and 29 on the implement side, so that a large number of consumers can be controlled with minimal expenditure on control and device technology.
- FIG. 2 shows a simplified system in which the essential advantages of the invention are retained, but the circuitry complexity is reduced.
- Consumer 15, 17 is only clamped on one side, which is acceptable in certain applications. If the consumer is designed as a hydraulic motor 15, it is in principle irrelevant whether the distribution valve is arranged in the feed branch line or in the return branch line. For consumers with different pressurized surfaces, such as a hydraulic cylinder 17, it is preferred if the cut-in valve 27 is arranged in the feed branch line 23 to the larger cylinder space 48, so that there is no pressure transmission between the cylinder space 48 and the annular space 50 at the consumer 17 and consequently with one Pressure build-up in the return line 20 no power transmission to the return branch line 25 occurs. Otherwise corresponds to that shown in FIG. 2
- a supply system for hydraulically actuated consumers of an implement attached or attached to a tractor or the like Disclosed is a supply system for hydraulically actuated consumers of an implement attached or attached to a tractor or the like.
- a central valve which specifies the pressure medium volume flow is arranged on the tractor, to which a supply and return line on the implement side is connected.
- several consumers are connected in parallel to one another, one consumer in each case being hydraulically connectable to the central valve via a distribution valve arrangement.
- the pressure medium volume flow is thus set on the tractor side, while the pressure medium distribution is carried out on the implement side via the distribution valve arrangement.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410010623 DE102004010623A1 (de) | 2004-03-02 | 2004-03-02 | Versorgungssystem |
| PCT/EP2005/001889 WO2005084413A1 (de) | 2004-03-02 | 2005-02-23 | Versorgungssystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1720397A1 true EP1720397A1 (de) | 2006-11-15 |
Family
ID=34877376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05707593A Withdrawn EP1720397A1 (de) | 2004-03-02 | 2005-02-23 | Versorgungssystem |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1720397A1 (de) |
| DE (1) | DE102004010623A1 (de) |
| RU (1) | RU2387889C2 (de) |
| WO (1) | WO2005084413A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005059351A1 (de) * | 2005-12-09 | 2007-06-21 | Claas Selbstfahrende Erntemaschinen Gmbh | Hydrauliksystem für eine selbstfahrende Erntemaschine |
| DE102017115987A1 (de) * | 2017-07-17 | 2019-01-17 | Claas Industrietechnik Gmbh | Hydraulische Druckmittelversorgung und Adapterventileinheit |
| FR3133287B1 (fr) * | 2022-03-10 | 2024-03-15 | B C Technique Agro Organique | Bineuse universelle |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU613039A1 (ru) * | 1975-10-27 | 1978-06-30 | Сибирский Автомобильно-Дорожный Институт Им. В.В.Куйбышева | Гидропривод рабочего оборудовани фронтального погрузчика |
| SU734051A1 (ru) * | 1977-12-19 | 1980-05-15 | Белорусский Ордена Трудового Красного Знамени Политехнический Институт | Трактор |
| SU1248952A1 (ru) * | 1984-05-25 | 1986-08-07 | Московское научно-производственное объединение по строительному и дорожному машиностроению "ВНИИстройдормаш" | Устройство дл управлени рабочим оборудованием погрузчика |
| US5957218A (en) * | 1997-11-18 | 1999-09-28 | Deere & Company | Electrohydraulic control of implement lift cylinders |
| DE19943561B4 (de) | 1999-09-13 | 2017-04-06 | Gebr. Pöttinger GmbH | Landwirtschaftlicher Schlepper für unterschiedlich angehängte oder angebaute Geräte |
| DE10107139B4 (de) | 2001-02-15 | 2004-09-23 | Gebr. Pöttinger GmbH | Pflug |
| DE10120996A1 (de) * | 2001-04-28 | 2002-10-31 | Bosch Gmbh Robert | Hydraulische Steuereinrichtung |
| DE10206507A1 (de) * | 2002-02-16 | 2003-08-28 | Deere & Co | Einrichtung zum Bewegen einer Arbeitseinheit |
| DE10330869A1 (de) * | 2003-07-09 | 2005-02-17 | Hydac System Gmbh | Hydraulisches System |
-
2004
- 2004-03-02 DE DE200410010623 patent/DE102004010623A1/de not_active Ceased
-
2005
- 2005-02-23 EP EP05707593A patent/EP1720397A1/de not_active Withdrawn
- 2005-02-23 WO PCT/EP2005/001889 patent/WO2005084413A1/de not_active Ceased
- 2005-02-23 RU RU2006130622/11A patent/RU2387889C2/ru not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005084413A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005084413A1 (de) | 2005-09-15 |
| RU2006130622A (ru) | 2008-03-10 |
| RU2387889C2 (ru) | 2010-04-27 |
| DE102004010623A1 (de) | 2005-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20060818 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KEUPER, GERHARD Inventor name: JESSEN, SOENKE Inventor name: STACHNIK, PETER |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20110408 |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| INTG | Intention to grant announced |
Effective date: 20130903 |
|
| 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: 20140114 |