ES402999A1 - Mejoras introducidas en el sistema elevador hidraulico de tractores. - Google Patents

Mejoras introducidas en el sistema elevador hidraulico de tractores.

Info

Publication number
ES402999A1
ES402999A1 ES402999A ES402999A ES402999A1 ES 402999 A1 ES402999 A1 ES 402999A1 ES 402999 A ES402999 A ES 402999A ES 402999 A ES402999 A ES 402999A ES 402999 A1 ES402999 A1 ES 402999A1
Authority
ES
Spain
Prior art keywords
lift system
hydraulic lift
tractor hydraulic
control
tractor
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
ES402999A
Other languages
English (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.)
Ford Motor Co
Original Assignee
Ford Motor Co
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 Ford Motor Co filed Critical Ford Motor Co
Publication of ES402999A1 publication Critical patent/ES402999A1/es
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
    • 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
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/1117—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a hitch position sensor

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

Mejoras introducidas en el sistema elevador hidráulico de tractores que tienen un motor, una transmisión , ruedas motrices sobre el suelo, un tren de arrastre que se extiende entre la transmisión y las ruedas motrices en el suelo, un brazo destinado a soportar un accesorio, una fuente de fluido hidráulico bajo presión, un cilindro de elevación para controlar la altura del brazo que soporta el accesorio, y una válvula de control para regular la admisión del fluido a y para dejar salir el fluido de dicho cilindro, comprendiendo dichas mejoras, una servo- palanca acoplado a dicha válvula de control, un detector de tiro acoplado a la servo-palanca a través de una varilla selectora para accionar la válvula de control de forma que eleve o baje el brazo que soporta el accesorio en respuesta alas desviaciones en el par del árbol de transmisión a partir de una carga de tiro predeterminada sobre el tractor; Un detector de par en el tren de arrastre acoplado con la servo-palanca a través de la varillaselectora para accionar la válvula de control de forma que eleve o baje el brazo que soporta el accesorio en respuesta a las desviaciones en el par del árbol de transmisión por encima o por debajo de una norma predeterminada y Un dispositivo de control acoplado a la servo-palanca para ajustar de manera previa la válvula de control de forma que se mantenga la altura del brazo que soporta el accesorio automáticamente a un punto predeterminado cuando las condiciones de tiro y de par se encuentran en la norma deseada.
ES402999A 1971-06-11 1972-05-19 Mejoras introducidas en el sistema elevador hidraulico de tractores. Expired ES402999A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15231671A 1971-06-11 1971-06-11

Publications (1)

Publication Number Publication Date
ES402999A1 true ES402999A1 (es) 1975-12-01

Family

ID=22542409

Family Applications (1)

Application Number Title Priority Date Filing Date
ES402999A Expired ES402999A1 (es) 1971-06-11 1972-05-19 Mejoras introducidas en el sistema elevador hidraulico de tractores.

Country Status (14)

Country Link
US (1) US3732933A (es)
AU (1) AU454390B2 (es)
BE (1) BE784645A (es)
BR (1) BR7203301D0 (es)
CA (1) CA962112A (es)
DE (1) DE2225559A1 (es)
DK (1) DK148641C (es)
ES (1) ES402999A1 (es)
FR (1) FR2140384B1 (es)
GB (1) GB1349834A (es)
IT (1) IT952105B (es)
NL (1) NL151880B (es)
SE (1) SE385758B (es)
ZA (1) ZA721569B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI54981C (fi) * 1974-02-27 1979-04-10 Valmet Oy Regleringssystem foer traktor
JPS51124502A (en) * 1975-04-25 1976-10-30 Kubota Ltd Automatic depth controller
CA1066111A (en) * 1975-12-22 1979-11-13 Otto Mueller (Jr.) Draft and position control linkage with depth limit for a tractor
US4160485A (en) * 1977-12-23 1979-07-10 Ford Motor Company Tractor with draft load control system
US4518044A (en) * 1982-03-22 1985-05-21 Deere & Company Vehicle with control system for raising and lowering implement
DE3316305C2 (de) * 1983-05-04 1986-09-04 Mannesmann Rexroth GmbH, 8770 Lohr Schaltungsanordnung zum Steuern eines von einem Schlepper gezogenen, mittels eines Hubzylinders der Höhe nach verstellbaren Anbaugeräts
FR2871412A1 (fr) * 2004-06-14 2005-12-16 Miloco Production Entpr Uniper Systeme de maintien d'un attelage avec deverrouillage automatique
US7798241B2 (en) * 2008-09-19 2010-09-21 Deere & Company Mechanical hitch control unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241621A (en) * 1964-01-30 1966-03-22 Massey Ferguson Inc Tractor hydraulic control system
US3313359A (en) * 1964-04-23 1967-04-11 Union Carbide Canada Ltd Machine for thermally working minerals
US3575241A (en) * 1967-03-30 1971-04-20 Ford Motor Co Tractor hydraulic lift control system
GB1239281A (es) * 1968-07-29 1971-07-14
US3653446A (en) * 1969-07-24 1972-04-04 White Farm Equip Draft and position control for tractor drawn implements

Also Published As

Publication number Publication date
BR7203301D0 (pt) 1973-05-24
US3732933A (en) 1973-05-15
DK148641B (da) 1985-08-26
ZA721569B (en) 1972-11-29
NL151880B (nl) 1977-01-17
DE2225559A1 (de) 1973-01-04
DK148641C (da) 1986-02-24
SE385758B (sv) 1976-07-26
GB1349834A (en) 1974-04-10
FR2140384A1 (es) 1973-01-19
AU454390B2 (en) 1974-10-14
BE784645A (fr) 1972-10-02
CA962112A (en) 1975-02-04
AU4011472A (en) 1973-09-20
IT952105B (it) 1973-07-20
FR2140384B1 (es) 1974-10-04
NL7207726A (es) 1972-12-13

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19880219