ES334465A1 - Improvements in or relating to coupling devices for coupling working implements to tractors - Google Patents

Improvements in or relating to coupling devices for coupling working implements to tractors

Info

Publication number
ES334465A1
ES334465A1 ES334465A ES334465A ES334465A1 ES 334465 A1 ES334465 A1 ES 334465A1 ES 334465 A ES334465 A ES 334465A ES 334465 A ES334465 A ES 334465A ES 334465 A1 ES334465 A1 ES 334465A1
Authority
ES
Spain
Prior art keywords
upper link
implement
rods
hydraulic device
links
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
ES334465A
Other languages
Spanish (es)
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.)
John Deere Lanz Verwaltungs GmbH
Original Assignee
John Deere Lanz Verwaltungs 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 John Deere Lanz Verwaltungs GmbH filed Critical John Deere Lanz Verwaltungs GmbH
Publication of ES334465A1 publication Critical patent/ES334465A1/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
    • A01B59/06—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
    • A01B59/066—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors of the type comprising at least two lower arms and one upper arm generally arranged in a triangle (e.g. three-point hitches)

Landscapes

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

Abstract

A tractor power lift mechanism having a three-point coupling with hooks for the rapid attachment of an implement is characterized in that the upper link is extensible and is connected to the lower links so that the height interval between the upper and the lower hooks is variable. The upper link 2 is longitudinally adjustable both by a mechanical device 5 and a hydraulic device 6. The upper link is connected to the lower links 3, 4 via lifting links 27 by means of spacing rods 26 which are pivoted to the upper link by a rocking lever 25 having a torsion spring 22 whereby the upper link is biased into its retracted position. The spacing rods 26 are adjustable in length and in the retracted position of the upper link engage a spring biased locking pin 33 to retain the implement pin 11 in the hook. The rods are connected to the lift links 27 by a slot 60 in which engages a pin 58 which is arranged to engage in a recess 62 in the operative position of the linkage. In an embodiment the spacing rods 26 are connected directly to the lower links and the two rods are connected by an adjustable bar. The hydraulic device 6 may be double acting thus dispensing with the spring 22. In operation when the linkage is lowered, reduced pressure in the. hydraulic device 6. allows the spring 22 to pivot the rocking lever 25 to extend the upper link 2 which is then engaged under the implement pin 11. Raising of the linkage pressurises the hydraulic device 6 to retract the upper link which is first raised and then lowered, whilst pulling the implement so that its lower pins engage hooks 64.
ES334465A 1966-01-03 1966-12-13 Improvements in or relating to coupling devices for coupling working implements to tractors Expired ES334465A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0049070 1966-01-03

Publications (1)

Publication Number Publication Date
ES334465A1 true ES334465A1 (en) 1968-02-01

Family

ID=7051642

Family Applications (1)

Application Number Title Priority Date Filing Date
ES334465A Expired ES334465A1 (en) 1966-01-03 1966-12-13 Improvements in or relating to coupling devices for coupling working implements to tractors

Country Status (3)

Country Link
ES (1) ES334465A1 (en)
FR (1) FR1507109A (en)
GB (1) GB1145313A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT326391B (en) * 1973-03-13 1975-12-10 Walterscheid Gmbh Jean THREE-POINT HITCH, IN PARTICULAR FOR A TRACTOR
DE3812198A1 (en) * 1988-04-13 1989-10-26 Walterscheid Gmbh Jean THREE-POINT ATTACHMENT DEVICE
IT1276609B1 (en) * 1995-11-17 1997-11-03 Roberto Giacomo Cavalli QUICK ATTACHMENT SYSTEM, PARTICULARLY OF ATTACHMENTS TO AGRICULTURAL TRACTORS

Also Published As

Publication number Publication date
GB1145313A (en) 1969-03-12
DE1557667A1 (en) 1970-02-05
FR1507109A (en) 1967-12-22

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