WO2022258423A1 - Hydraulikschaltung zur schardruck- und gebläsedrehzahleinstellung an einer landwirtschaftlichen ausbringmaschine - Google Patents
Hydraulikschaltung zur schardruck- und gebläsedrehzahleinstellung an einer landwirtschaftlichen ausbringmaschine Download PDFInfo
- Publication number
- WO2022258423A1 WO2022258423A1 PCT/EP2022/064666 EP2022064666W WO2022258423A1 WO 2022258423 A1 WO2022258423 A1 WO 2022258423A1 EP 2022064666 W EP2022064666 W EP 2022064666W WO 2022258423 A1 WO2022258423 A1 WO 2022258423A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic
- valve
- pressure
- coulter
- hydraulic circuit
- Prior art date
Links
- 238000009331 sowing Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 description 10
- 238000012986 modification Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 239000010720 hydraulic oil Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 240000004713 Pisum sativum Species 0.000 description 1
- 235000010582 Pisum sativum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
-
- 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
Definitions
- Hydraulic circuit for setting the coulter pressure and fan speed on an agricultural spreading machine
- the invention relates to a hydraulic circuit for setting the coulter pressure and fan speed on an agricultural spreading machine according to the preamble of patent claim 1, a hydraulic control block according to the preamble of patent claim 7, an agricultural
- the object is achieved by a hydraulic circuit of the type mentioned at the outset, the hydraulic valve of the hydraulic circuit according to the invention being designed as a 3-way flow control valve. Due to the use of the 3-way flow control valve, the required hydraulic pressure is always present at the coulter pressure adjustment cylinder, regardless of the hydraulic pressure applied to the fan. Even at low speeds on the fan, at which, for example, a hydraulic pressure of less than 50 bar must be present on the fan, high hydraulic pressures, for example 100 bar or more, can be present on the coulter pressure adjustment cylinder. The hydraulic pressure applied to the coulter pressure adjustment cylinder can therefore be higher than the hydraulic pressure applied to the blower.
- the hydraulic valve designed as a 3-way flow control valve always ensures that the coulter pressure can be set as desired, regardless of the hydraulic pressure required by the fan motor. At the same time, the fan speed can be adjusted independently of the coulter pressure via the tractor control unit.
- the first line area is connected to a first valve outlet of the hydraulic valve.
- the second line area is preferably connected to a second valve outlet of the hydraulic valve.
- the valve inlet of the hydraulic valve is connected to an inflow line of the hydraulic circuit, it being possible to introduce hydraulic fluid from a tractor-side hydraulic source into the inflow line of the hydraulic circuit via an inflow connection.
- the first valve outlet of the hydraulic valve which is connected to the first line area, is a priority outlet of the hydraulic valve that limits the volume flow to a volume flow limit value.
- the second line area connected to the second Valve outlet of the hydraulic valve may be a priority outlet of the hydraulic valve that limits the volume flow to a volume flow limit value.
- the hydraulic valve is set up to limit the volume flow at the priority outlet to a volume flow limit value in the range of 4-8 l/min, preferably in the range of 5-7 l/min.
- a volume flow limit value in the range of 4-8 l/min, preferably in the range of 5-7 l/min.
- the second valve outlet of the hydraulic valve connected to the second line region is a secondary outlet of the hydraulic valve, via which the volume flow that cannot be discharged from the hydraulic valve via the priority outlet due to the volume flow limitation at the priority outlet can be discharged.
- the first valve outlet of the hydraulic valve connected to the first line area can be a secondary outlet of the hydraulic valve, via which the volume flow that cannot be discharged via the priority outlet due to the volume flow limitation at the priority outlet can be discharged from the hydraulic valve.
- the hydraulic circuit according to the invention has a pressure-limiting valve which is set up to limit the hydraulic pressure in the first line area to a maximum pressure. If the first line area is connected to a coulter pressure setting cylinder and the coulter pressure setting cylinder specifies a hydraulic pressure, the pressure limiting valve can be used to set the coulter pressure setting cylinder Hydraulic pressure can be set if the pressure is limited by the pressure relief valve.
- the object on which the invention is based is also achieved by a hydraulic control block of the type mentioned at the outset, the hydraulic circuit of the hydraulic control block according to the invention being designed according to one of the embodiments described above.
- the housing of the hydraulic control block, in which the hydraulic circuit is integrated can be made of plastic or metal, for example.
- the housing is a plastic injection-moulded housing or an aluminum injection-moulded housing.
- the hydraulic control block preferably has a cylinder connection via which at least one coulter pressure adjustment cylinder can be connected to the first line area.
- the hydraulic control block preferably has a fan connection via which a hydraulically drivable fan can be connected to the second line area.
- the hydraulic control block preferably has an inlet connection and a return connection. Hydraulic fluid can be introduced into the hydraulic circuit from a hydraulic source on the tractor side via the inlet connection. Hydraulic fluid from the hydraulic circuit can be fed to a tractor-side hydraulic tank via the return connection.
- the object on which the invention is based is also achieved by an agricultural spreading machine of the type mentioned at the outset, the hydraulic circuit of the agricultural spreading machine according to the invention being designed according to one of the embodiments described above or being part of a hydraulic control block described above.
- the advantages and modifications of the agricultural spreading machine according to the invention are first discussed and referenced the advantages and modifications of the hydraulic control block according to the invention.
- the agricultural spreading machine can be a seed drill, for example.
- the spreading machine can be designed as an attachment.
- the crowd can be a coulter of a single-grain sowing unit.
- the share can be arranged together with other shares on a carrier, the share pressure adjusting cylinder acts on the carrier and generates a uniform share pressure for shares arranged together on the carrier.
- the carrier can be rotated by means of the coulter pressure adjustment cylinder, a coulter pressure being set on the coulters arranged jointly on the carrier as a function of the angle of rotation of the carrier.
- the number of coulters arranged together on the carrier is preferably taken into account for controlling the coulter pressure adjustment cylinder.
- the object on which the invention is based is also achieved by a method of the type mentioned at the outset, in which the hydraulic valve, by means of which the hydraulic pressure is adjusted in the first line area and the second line area, is designed as a 3-way flow control valve.
- the method is preferably used to set the coulter pressure and the fan speed on an agricultural spreading machine according to one of the embodiments described above.
- the coulter pressure and the blower speed are preferably adjusted by means of a hydraulic circuit according to one of the embodiments described above.
- FIG. 1 shows an exemplary embodiment of the hydraulic circuit according to the invention, including a fan, in a perspective view; and 2 shows an exemplary embodiment of the hydraulic circuit according to the invention, together with the coulter pressure adjustment cylinder and fan, in a schematic representation.
- the hydraulic circuit 10 has an inflow line 12 via which a hydraulic fluid, for example hydraulic oil, can be introduced into the hydraulic circuit 10 from a hydraulic source 202 on the tractor (not shown). Via the inflow line 12, the hydraulic fluid reaches a hydraulic valve 14, which is designed as a 3-way flow control valve.
- the inflow line 12 is connected to the valve inlet 16 of the hydraulic valve 14 .
- the valve outlet 18 of the hydraulic valve 14 designed as a priority outlet is to be connected to at least one coulter pressure adjustment cylinder 104 (not shown), so that a hydraulic pressure is specified for the coulter pressure adjustment cylinder 104 via the valve outlet 18 .
- At the valve outlet 18 there is a volumetric flow limitation to a valve-specific volumetric flow.
- the volume flow limit value can be, for example, in the range from 4 to 8 l/min, in particular in the range from 5 to 7 l/min.
- the second valve outlet 20 of the hydraulic valve 14 is a secondary outlet of the hydraulic valve 14, via which the volume flow that cannot be discharged via the priority outlet due to the volume flow limitation at the priority outlet can be discharged from the hydraulic valve 14.
- the valve outlet 20 is connected to a hydraulic drive 108 of the blower via the connecting line 106 and specifies a hydraulic pressure for the drive 108 .
- FIG. 2 shows a hydraulic circuit 10 which is integrated into a housing 52 of a hydraulic control block 50 .
- the hydraulic control block 50 has an inlet connection 54 via which hydraulic fluid, for example hydraulic oil, from a hydraulic source 202 of a tractor-side
- Hydraulic unit 200 can be introduced into the hydraulic circuit 10.
- an inlet line 100 runs between the inlet connection 54 of the hydraulic control block 50 and the hydraulic unit 200.
- the valve outlet 18 is designed as a priority outlet, so that a priority outlet
- volume flow limitation takes place on a volume flow limit value. This can be in the range of 5 to 7 l/min, for example.
- the valve outlet 20 of the hydraulic valve 14 is a secondary outlet of the hydraulic valve 14, via which the volume flow that cannot be discharged via the priority outlet due to the volume flow limitation at the priority outlet is discharged from the hydraulic valve 14.
- the hydraulic fluid passes from the valve outlet 18 into a line area 22 which is connected to at least one coulter pressure adjustment cylinder 104 via a connecting line 102 .
- the line area 22 specifies a hydraulic pressure for the coulter pressure adjustment cylinder 104 .
- the hydraulic control block 50 has a cylinder port 56 through which the
- Coulter pressure adjustment cylinder 104 is connected to the line area 22 .
- the hydraulic circuit 10 also includes a pressure-limiting valve 24, which limits the hydraulic pressure in the line area 22 to a maximum pressure.
- the hydraulic pressure specified for the coulter pressure adjustment cylinder 104 can thus be established via the pressure-limiting valve 24 .
- the hydraulic fluid leaving the pressure-limiting valve 24 is fed to a return port 60 via an outflow line 26 .
- the return connection 50 is connected to a hydraulic tank 204 of the hydraulic unit 200 on the tractor side via a return line 110 , so that hydraulic fluid can be returned to the hydraulic tank 204 via the return line 110 .
- the valve outlet 20 of the hydraulic valve 14 is connected to a further line area 28 of the hydraulic circuit 10 .
- the line area 28 is connected to a hydraulic drive 108 of the fan and specifies a hydraulic pressure for the drive 108 .
- the hydraulic valve 14 is therefore used to adjust the hydraulic pressure in the line area 22 and to adjust the hydraulic pressure in the line area 28.
- the drive 108 of the fan is via the fan connection 58 and the connection line 106 with the as Auxiliary outlet trained valve outlet 20 of the hydraulic valve 14 connected.
- the hydraulic valve 14 designed as a 3-way flow control valve the required hydraulic pressure is always present at the coulter pressure adjustment cylinder 104 independently of the hydraulic pressure present at the drive 108 of the fan. Even at low speeds on the blower, at which, for example, a hydraulic pressure of less than 50 bar must be present at the drive 108 of the blower, high hydraulic pressures, for example 100 bar and more, can be present at the coulter pressure adjustment cylinder 104 .
- the hydraulic pressure present at the coulter pressure adjustment cylinder 104 can therefore be higher than the hydraulic pressure present at the drive 108 of the fan.
- the hydraulic valve 14 designed as a 3-way flow valve thus always ensures that the coulter pressure can be set as desired.
- the coulter pressure adjustment cylinder 104 can act, for example, on a carrier on which several coulters, in particular sowing coulters, are arranged. In this way, the multiple coulters can be subjected to a uniform coulter pressure via the common carrier.
- the support can also be rotated by means of the coulter pressure adjustment cylinder 104, with a coulter pressure being adjusted on the common coulters arranged on the support depending on the rotation angle of the support.
- the number of coulters mounted together on the carrier can be taken into account for controlling the pressure-limiting valve 24 that predetermines the hydraulic pressure for the blade pressure adjustment cylinder 104 .
- valve inlet 18 valve outlet 20 valve outlet 22 line area 24 pressure relief valve
- connection line 102 connection line 104 coulter pressure adjustment cylinder 106 connection line 108 drive
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Sowing (AREA)
- Soil Working Implements (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22731181.8A EP4351306A1 (de) | 2021-06-10 | 2022-05-31 | Hydraulikschaltung zur schardruck- und gebläsedrehzahleinstellung an einer landwirtschaftlichen ausbringmaschine |
BR112023024809A BR112023024809A2 (pt) | 2021-06-10 | 2022-05-31 | Circuito hidráulico, bloco de controle hidráulico, máquina de disseminação agrícola e método para ajustar a pressão de coulter e a velocidade rotacional do soprador em uma máquina de disseminação agrícola |
CA3220031A CA3220031A1 (en) | 2021-06-10 | 2022-05-31 | Hydraulic circuit for coulter pressure and fan speed adjustment in an agricultural sowing machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021115001.9A DE102021115001A1 (de) | 2021-06-10 | 2021-06-10 | Hydraulikschaltung zur Schardruck- und Gebläsedrehzahleinstellung an einer landwirtschaftlichen Ausbringmaschine |
DE102021115001.9 | 2021-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022258423A1 true WO2022258423A1 (de) | 2022-12-15 |
Family
ID=82100827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/064666 WO2022258423A1 (de) | 2021-06-10 | 2022-05-31 | Hydraulikschaltung zur schardruck- und gebläsedrehzahleinstellung an einer landwirtschaftlichen ausbringmaschine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4351306A1 (de) |
BR (1) | BR112023024809A2 (de) |
CA (1) | CA3220031A1 (de) |
DE (1) | DE102021115001A1 (de) |
WO (1) | WO2022258423A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6460623B1 (en) * | 2000-10-20 | 2002-10-08 | Caterpillar Inc. | Hydraulic system providing down force on a work implement |
EP2025215A1 (de) * | 2007-08-13 | 2009-02-18 | Kverneland ASA | Saatgut- und/oder Düngerverteilmaschine |
US20100078185A1 (en) * | 2008-09-29 | 2010-04-01 | Randall Joseph Carlz | Active implement down force system providing reduced heat generation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8903545B2 (en) | 2011-06-10 | 2014-12-02 | Great Plains Manufacturing, Inc. | Agricultural implement having hopper weighing system |
-
2021
- 2021-06-10 DE DE102021115001.9A patent/DE102021115001A1/de active Pending
-
2022
- 2022-05-31 WO PCT/EP2022/064666 patent/WO2022258423A1/de active Application Filing
- 2022-05-31 EP EP22731181.8A patent/EP4351306A1/de active Pending
- 2022-05-31 BR BR112023024809A patent/BR112023024809A2/pt unknown
- 2022-05-31 CA CA3220031A patent/CA3220031A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6460623B1 (en) * | 2000-10-20 | 2002-10-08 | Caterpillar Inc. | Hydraulic system providing down force on a work implement |
EP2025215A1 (de) * | 2007-08-13 | 2009-02-18 | Kverneland ASA | Saatgut- und/oder Düngerverteilmaschine |
US20100078185A1 (en) * | 2008-09-29 | 2010-04-01 | Randall Joseph Carlz | Active implement down force system providing reduced heat generation |
Also Published As
Publication number | Publication date |
---|---|
EP4351306A1 (de) | 2024-04-17 |
DE102021115001A1 (de) | 2022-12-15 |
CA3220031A1 (en) | 2022-12-15 |
BR112023024809A2 (pt) | 2024-02-15 |
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