FR2444397A1 - Hydraulic controller for distributing hydraulic fluid - is coupled to hydraulic lifting cylinder of farm tractor with non return valve - Google Patents

Hydraulic controller for distributing hydraulic fluid - is coupled to hydraulic lifting cylinder of farm tractor with non return valve

Info

Publication number
FR2444397A1
FR2444397A1 FR7924917A FR7924917A FR2444397A1 FR 2444397 A1 FR2444397 A1 FR 2444397A1 FR 7924917 A FR7924917 A FR 7924917A FR 7924917 A FR7924917 A FR 7924917A FR 2444397 A1 FR2444397 A1 FR 2444397A1
Authority
FR
France
Prior art keywords
hydraulic
return valve
distributing
lifting cylinder
coupled
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Withdrawn
Application number
FR7924917A
Other languages
French (fr)
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of FR2444397A1 publication Critical patent/FR2444397A1/en
Withdrawn legal-status Critical Current

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
    • A01B63/1006—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor
    • A01B63/1013—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor and being located inside the tractor body

Abstract

The hydraulic controller is for distributing hydraulic fluid esp. from two hydraulic supplies to several different range loads, one of which requires an increased hydraulic flow for a short time. The piston rod end of the lifting cylinder (2) which is used for lifting and lowering agricultural implements coupled to an agricultural tractor is connected, at its head, via a non-return valve which cuts off in the direction of the piston rod end. Control lines (23, 24) branch off upstream and downstream of a measuring shutter (18) in the cylinder feed line (8). The pressure difference generated by flow through the feed line (8) pushes the stem of a priority valve (25) into one of its cut off end positions for switching in an additional load (3).
FR7924917A 1978-12-22 1979-10-05 Hydraulic controller for distributing hydraulic fluid - is coupled to hydraulic lifting cylinder of farm tractor with non return valve Withdrawn FR2444397A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782855749 DE2855749A1 (en) 1978-12-22 1978-12-22 HYDRAULIC CONTROL DEVICE FOR DISTRIBUTING PRESSURE LIQUID AT LEAST ONE, IN PARTICULAR, FROM TWO PRESSURE LIQUID SOURCES TO SEVERAL VARIOUS CONSUMERS

Publications (1)

Publication Number Publication Date
FR2444397A1 true FR2444397A1 (en) 1980-07-18

Family

ID=6058152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7924917A Withdrawn FR2444397A1 (en) 1978-12-22 1979-10-05 Hydraulic controller for distributing hydraulic fluid - is coupled to hydraulic lifting cylinder of farm tractor with non return valve

Country Status (2)

Country Link
DE (1) DE2855749A1 (en)
FR (1) FR2444397A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108347A1 (en) * 1982-11-01 1984-05-16 Valmet Oy Hydraulic system for a tractor or equivalent
EP1788288A2 (en) * 2005-11-16 2007-05-23 Deere & Company Dual pump dual pressure hydraulic circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3319533A1 (en) * 1983-05-28 1984-11-29 Klöckner-Humboldt-Deutz AG, 5000 Köln HYDRAULIC CONTROL SYSTEM FOR THE STEERING AND WORKING HYDRAULICS ON VEHICLES
DE10238614A1 (en) * 2002-08-17 2004-02-26 Claas Selbstfahrende Erntemaschinen Gmbh Oil volume compensation in the oil circuit of the hydraulic drive of a self-propelled machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353735A1 (en) * 1976-06-04 1977-12-30 Bosch Gmbh Robert HYDRAULIC CONTROL DEVICE FOR THE DISTRIBUTION OF PRESSURIZED FLUID BETWEEN TWO SYSTEMS
GB1579287A (en) * 1976-06-10 1980-11-19 Sanyo Kiki Kk Speed-up devices for reciprocating cylinders

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353735A1 (en) * 1976-06-04 1977-12-30 Bosch Gmbh Robert HYDRAULIC CONTROL DEVICE FOR THE DISTRIBUTION OF PRESSURIZED FLUID BETWEEN TWO SYSTEMS
GB1579287A (en) * 1976-06-10 1980-11-19 Sanyo Kiki Kk Speed-up devices for reciprocating cylinders

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108347A1 (en) * 1982-11-01 1984-05-16 Valmet Oy Hydraulic system for a tractor or equivalent
EP1788288A2 (en) * 2005-11-16 2007-05-23 Deere & Company Dual pump dual pressure hydraulic circuit
EP1788288A3 (en) * 2005-11-16 2010-04-14 Deere & Company Dual pump dual pressure hydraulic circuit

Also Published As

Publication number Publication date
DE2855749A1 (en) 1980-06-26

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Legal Events

Date Code Title Description
ST Notification of lapse