GB1455618A - Hydraulic lifting system - Google Patents

Hydraulic lifting system

Info

Publication number
GB1455618A
GB1455618A GB3698874A GB3698874A GB1455618A GB 1455618 A GB1455618 A GB 1455618A GB 3698874 A GB3698874 A GB 3698874A GB 3698874 A GB3698874 A GB 3698874A GB 1455618 A GB1455618 A GB 1455618A
Authority
GB
United Kingdom
Prior art keywords
valve
aug
closes
lower position
hydraulic lifting
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.)
Expired
Application number
GB3698874A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1455618A publication Critical patent/GB1455618A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/14—Mowing tables
    • A01D41/145—Header lifting devices

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

1455618 Hydraulic systems for harvesters ROBERT BOSCH GmbH 22 Aug 1974 [31 Aug 1973] 36988/74 Heading A1F [Also in Division Fl] The circuit shown automatically maintains sufficient pressure in a chamber 15 of a lifting ram, by means of an accumulator 41, to ensure that a cutter table of a combine harvester does not dig into the ground even if the control valve 18 is held in the lower position. A relief valve 34 closes at the minimum pressure required to hold the table as shown. When'the table is raised the valve 34 opens. If the valve 18 is moved to the lower position, pump connection 19 is connected to post 26 thus opening a pilot controlled check-valve 32 so that oil can return to the sump until the valve 34 closes.
GB3698874A 1973-08-31 1974-08-22 Hydraulic lifting system Expired GB1455618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732343888 DE2343888A1 (en) 1973-08-31 1973-08-31 HYDRAULIC LIFTING DEVICE ON HARVESTING MACHINERY

Publications (1)

Publication Number Publication Date
GB1455618A true GB1455618A (en) 1976-11-17

Family

ID=5891207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3698874A Expired GB1455618A (en) 1973-08-31 1974-08-22 Hydraulic lifting system

Country Status (7)

Country Link
JP (1) JPS5051822A (en)
AT (1) AT377409B (en)
BE (1) BE819429A (en)
DE (1) DE2343888A1 (en)
FR (1) FR2245272B1 (en)
GB (1) GB1455618A (en)
IT (1) IT1020201B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821320A1 (en) * 1988-06-24 1989-12-28 Teves Gmbh Alfred Pressure-medium source for a hydraulic system, in particular a brake system
CN112119687A (en) * 2020-10-30 2020-12-25 河源市李旭农业机械设备有限公司 Integrated combined harvesting device for crops

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2742424C2 (en) * 1977-09-21 1986-08-28 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic lifting device on harvesting machines
DE3415922C2 (en) * 1984-04-28 1994-01-13 Bosch Gmbh Robert Hydraulic lifting device on harvesting machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821320A1 (en) * 1988-06-24 1989-12-28 Teves Gmbh Alfred Pressure-medium source for a hydraulic system, in particular a brake system
CN112119687A (en) * 2020-10-30 2020-12-25 河源市李旭农业机械设备有限公司 Integrated combined harvesting device for crops
CN112119687B (en) * 2020-10-30 2022-08-19 河源市李旭农业机械设备有限公司 Integrated combined harvesting device for crops

Also Published As

Publication number Publication date
BE819429A (en) 1974-12-16
JPS5051822A (en) 1975-05-08
AT377409B (en) 1985-03-25
FR2245272A1 (en) 1975-04-25
DE2343888A1 (en) 1975-03-06
IT1020201B (en) 1977-12-20
FR2245272B1 (en) 1978-02-17
ATA687074A (en) 1978-01-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee