GB2004725A - Hydraulic lifting device on a farm tractor equipped with a three-point hitch - Google Patents

Hydraulic lifting device on a farm tractor equipped with a three-point hitch

Info

Publication number
GB2004725A
GB2004725A GB7827845A GB7827845A GB2004725A GB 2004725 A GB2004725 A GB 2004725A GB 7827845 A GB7827845 A GB 7827845A GB 7827845 A GB7827845 A GB 7827845A GB 2004725 A GB2004725 A GB 2004725A
Authority
GB
United Kingdom
Prior art keywords
lift
power
point hitch
piston
lifting device
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.)
Granted
Application number
GB7827845A
Other versions
GB2004725B (en
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 GB2004725A publication Critical patent/GB2004725A/en
Application granted granted Critical
Publication of GB2004725B publication Critical patent/GB2004725B/en
Expired 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
    • A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
    • A01B59/04—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor
    • A01B59/042—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor
    • A01B59/043—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor supported at three points, e.g. by quick-release couplings

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Machines (AREA)

Abstract

A tractor three-point hitch comprises a power-lift featuring a cylinder accommodated in the power-lift housing and a piston movably supported in the cylinder. Inside the power-lift housing, the piston is connected to lift arms 11 which support lower links 14 via lifting rods 12 which are adjustable in length and which - at one end - are linked in bearing bosses whilst - at the other end - they are articulated to the free ends of the lifting arms. The arrangement is such that the ends of the lifting rods 12 facing the lower links 14 can be linked to fishplates 23 provided on the lower links 14 after having disengaged said bottom ends of the lifting rods from the bearing bosses 13 and after having moved the piston of the power-lift to a final position limited by a detent. <IMAGE>
GB7827845A 1977-09-27 1978-06-26 Hydraulic lifting device on a farm tractor equipped with a three-point hitch Expired GB2004725B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772743405 DE2743405B2 (en) 1977-09-27 1977-09-27 Hydraulic lifting device on an agricultural tractor with three-point hitch

Publications (2)

Publication Number Publication Date
GB2004725A true GB2004725A (en) 1979-04-11
GB2004725B GB2004725B (en) 1982-02-17

Family

ID=6020000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827845A Expired GB2004725B (en) 1977-09-27 1978-06-26 Hydraulic lifting device on a farm tractor equipped with a three-point hitch

Country Status (3)

Country Link
DE (1) DE2743405B2 (en)
FR (1) FR2403730A1 (en)
GB (1) GB2004725B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108021022A (en) * 2018-01-31 2018-05-11 吉林省农业机械研究院 A kind of rear-tractor three-link hitch and its control method
CN114128429A (en) * 2021-12-29 2022-03-04 湖南农夫机电有限公司 Tractor forced-pressure lifting control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT268746B (en) * 1967-10-12 1969-02-25 Steyr Daimler Puch Ag Additional part for the lower links of tractor hoists

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108021022A (en) * 2018-01-31 2018-05-11 吉林省农业机械研究院 A kind of rear-tractor three-link hitch and its control method
CN108021022B (en) * 2018-01-31 2024-02-20 吉林省农业机械研究院 Rear-mounted three-point suspension device of tractor and control method thereof
CN114128429A (en) * 2021-12-29 2022-03-04 湖南农夫机电有限公司 Tractor forced-pressure lifting control system

Also Published As

Publication number Publication date
FR2403730A1 (en) 1979-04-20
FR2403730B3 (en) 1981-07-24
GB2004725B (en) 1982-02-17
DE2743405A1 (en) 1979-03-29
DE2743405B2 (en) 1979-08-23

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee