FR2438960A1 - Alignment correction between trailer and tractor - uses sensing tow-bar angle to provide hydraulic powered compensation for steering drive to prevent crop damage - Google Patents

Alignment correction between trailer and tractor - uses sensing tow-bar angle to provide hydraulic powered compensation for steering drive to prevent crop damage

Info

Publication number
FR2438960A1
FR2438960A1 FR7829522A FR7829522A FR2438960A1 FR 2438960 A1 FR2438960 A1 FR 2438960A1 FR 7829522 A FR7829522 A FR 7829522A FR 7829522 A FR7829522 A FR 7829522A FR 2438960 A1 FR2438960 A1 FR 2438960A1
Authority
FR
France
Prior art keywords
tractor
tow
trailer
bar angle
steering drive
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
FR7829522A
Other languages
French (fr)
Other versions
FR2438960B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7829522A priority Critical patent/FR2438960A1/en
Publication of FR2438960A1 publication Critical patent/FR2438960A1/en
Application granted granted Critical
Publication of FR2438960B1 publication Critical patent/FR2438960B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • 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
    • A01B69/00—Steering of agricultural machines or implements; Guiding agricultural machines or implements on a desired track
    • A01B69/003—Steering or guiding of machines or implements pushed or pulled by or mounted on agricultural vehicles such as tractors, e.g. by lateral shifting of the towing connection
    • A01B69/004—Steering or guiding of machines or implements pushed or pulled by or mounted on agricultural vehicles such as tractors, e.g. by lateral shifting of the towing connection automatic
    • 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
    • A01B69/00—Steering of agricultural machines or implements; Guiding agricultural machines or implements on a desired track
    • A01B69/003—Steering or guiding of machines or implements pushed or pulled by or mounted on agricultural vehicles such as tractors, e.g. by lateral shifting of the towing connection
    • A01B69/006—Steering or guiding of machines or implements pushed or pulled by or mounted on agricultural vehicles such as tractors, e.g. by lateral shifting of the towing connection derived from the steering of the tractor
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D33/00—Accessories for digging harvesters

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Guiding Agricultural Machines (AREA)

Abstract

Automatic correction is provided for the alignment between a vehicle being towed and the towing vehicel e.g. a tractor and some form of agricultural machinerv. The alignment is such as to prevent the towed vehicle moving out of line due to the nature of the terrain, damaging crops or verges etc. with its wheels or implements. Connection between the two vehicles is by a tow bar (3) articulated at both ends, that at the towed vehicle (2) being mounted on a double acting piston and cylinder (8, 14). A third articulation point (5) is fixed at the load bearing point on the towed vehicle. Sensors (9, 10) on the tractor provide an output as a function of the tow-bar angle and control hydraulically the piston position from a distributor (19) and reservoir (22). The sensors may be pneumatic, electromagnetic or photoelectric.
FR7829522A 1978-10-17 1978-10-17 Alignment correction between trailer and tractor - uses sensing tow-bar angle to provide hydraulic powered compensation for steering drive to prevent crop damage Granted FR2438960A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7829522A FR2438960A1 (en) 1978-10-17 1978-10-17 Alignment correction between trailer and tractor - uses sensing tow-bar angle to provide hydraulic powered compensation for steering drive to prevent crop damage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7829522A FR2438960A1 (en) 1978-10-17 1978-10-17 Alignment correction between trailer and tractor - uses sensing tow-bar angle to provide hydraulic powered compensation for steering drive to prevent crop damage

Publications (2)

Publication Number Publication Date
FR2438960A1 true FR2438960A1 (en) 1980-05-16
FR2438960B1 FR2438960B1 (en) 1984-01-13

Family

ID=9213826

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829522A Granted FR2438960A1 (en) 1978-10-17 1978-10-17 Alignment correction between trailer and tractor - uses sensing tow-bar angle to provide hydraulic powered compensation for steering drive to prevent crop damage

Country Status (1)

Country Link
FR (1) FR2438960A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709637A1 (en) * 1993-09-08 1995-03-17 Dufaut Gabriel Improvements to grape-harvesting machines hitched (coupled) to a tractor
GB2497577A (en) * 2011-12-15 2013-06-19 Agco Sa Linkage control systems for agricultural tractor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212793A (en) * 1962-11-29 1965-10-19 Pietroroia Dominic Steering control apparatus for trailers
DE1557706A1 (en) * 1967-12-07 1970-04-02 Faehse & Co H Facilities for automatic tracking of agricultural machines or devices according to a guideline
FR1596832A (en) * 1967-12-08 1970-06-22

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212793A (en) * 1962-11-29 1965-10-19 Pietroroia Dominic Steering control apparatus for trailers
DE1557706A1 (en) * 1967-12-07 1970-04-02 Faehse & Co H Facilities for automatic tracking of agricultural machines or devices according to a guideline
FR1596832A (en) * 1967-12-08 1970-06-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709637A1 (en) * 1993-09-08 1995-03-17 Dufaut Gabriel Improvements to grape-harvesting machines hitched (coupled) to a tractor
GB2497577A (en) * 2011-12-15 2013-06-19 Agco Sa Linkage control systems for agricultural tractor

Also Published As

Publication number Publication date
FR2438960B1 (en) 1984-01-13

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Legal Events

Date Code Title Description
CL Concession to grant licences
ST Notification of lapse