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    • 62. 发明专利
    • DE69302571D1
    • 1996-06-13
    • DE69302571
    • 1993-03-09
    • DEFRANCQ HUBERT
    • DEFRANCQ HUBERT
    • A01B59/048B62D49/08
    • PCT No. PCT/FR93/00228 Sec. 371 Date Sep. 7, 1994 Sec. 102(e) Date Sep. 7, 1994 PCT Filed Mar. 9, 1993 PCT Pub. No. WO93/17542 PCT Pub. Date Sep. 16, 1993Lifting device (D) comprising a frame (4) for fixing to a tractor chassis, the frame being fitted, on its lower part, with lower securing member (A), articulated about a transverse axis and extending towards the front, with its ends capable of being coupled to the two lower fastening points of a tool, and on its higher part, with a median upper securing members (16); lifting members (14) are provided between the frame (4) and lower securing members. The lower securing members (A) comprise, firstly, a lower primary structure (19), articulated at its rear part on a transverse axis (18) carried by the frame (4), and provided on the front with two longitudinal lateral extensions (21) in which a transverse bearing (26) is provided, and secondly, a forearm (29) associated with each longitudinal extension 921) and articulated about an axis (34) carried by the bearing. The forearms are independent; each (29) when in a work position, comes to rest by means of its rear part, under a stop integral with the structure (19), so as to block itself on lifting of the structure or on load raising. When the forearm (29) is free of its load, it can be folded upwards in relation to the frame (4), for a storage position. The forearm is provided, in a high position of the frame (19), with a stationary locking device to prevent both the structure and forearms from dropping, and to prevent the latter from rotating in relation to said structure.
    • 63. 发明专利
    • FR2649580B1
    • 1992-02-07
    • FR8909517
    • 1989-07-13
    • DEFRANCQ HUBERT
    • A01B63/108A01B59/048
    • A system includes two lower articulated longitudinal arms (6, 7) provided on their front ends with two bottom hitching points (8, 9), and an upper arm (10) in the middle, for hitching an implement at a third point; valves for controlling the rise and descent of the two lower arms and of the upper arm are provided, and the implement (3) is equipped with hitching members (11) corresponding to the three point hitch of a tractor; a rigid intermediate support frame (12) is provided for connection between the implement and the arms (6, 7, 10); the frame includes two bottom lateral points (13, 14) and one top middle point (15) for hitching the implement, and two lateral top points (16, 17) intened to be connected to the third top hitching point (10) of the tractor by connection jacks of variable length; the two lower arms (6, 7) are independent and can assume different inclinations, and the two lower lateral portions (22, 23) of the frame (12) are hitched to the two bottom points (8, 9), the assembly being such that the implement (3) and the frame (12) can oscillate about a virtual longitudinal axis (B).
    • 64. 发明专利
    • FR2628284B1
    • 1990-12-07
    • FR8802929
    • 1988-03-08
    • DEFRANCQ HUBERT
    • A01B63/114A01B59/048
    • The hitch gear comprises a three point lift system. It comprises a system (10) for load transfer by means of a hydraulic cylinder (11) at the third point and at least adjustment wheel (13) provided with a load sensor (19) suitable to act with control means of the cylinder (11) for keeping the load at the level of the adjustment wheel (13) approximately constant. The lift system comprises at least one hydraulic cylinder (27); a control device (28) of the position of the lift system, known per se, is provided and comprises at least an attachment means (29) for a reference position and appreciable control means at the fixed position suitable for supplying the hydraulic cylinder (27). A hydraulic distribution system (44) is provided between the cylinder at the third point (11) and the cylinder (27) and is connected in such a way that when the cylinder at the third point (11) acts in a direction which causes an increase in the load carried by the tractor, said distribution system ( 44) allows the creation of a raising of the level of the lifting device and, inversely, a lowering.
    • 68. 发明专利
    • DISPOSITIF DE RELEVAGE AVANT POUR ENGIN AGRICOLE ET PROCEDE DE COMMANDE ASSOCIE.
    • FR3037769A1
    • 2016-12-30
    • FR1555773
    • 2015-06-23
    • DEFRANCQ HUBERT
    • DEFRANCQ HUBERT
    • A01B63/10
    • L'invention se rapporte à un dispositif d'attelage et de relevage d'outil agricole, comprenant un châssis (1) destiné à être fixé sur l'engin agricole, au moins un premier bras (2) articulé sur le châssis et comportant en l'une de ses extrémités un premier moyen d'attelage (8) de l'outil, au moins un premier vérin (4) dont l'un des éléments, cylindre ou tige, est relié au châssis tandis que l'autre élément, tige ou cylindre, est relié au bras, ledit vérin permettant d'assurer le mouvement du bras de sorte que l'étendue de la course du vérin permet à l'extrémité du bras portant le moyen d'attelage, de balayer successivement une première position dite « position basse minimale », une seconde position dite « position haute maximale » et une troisième position dite « escamotée », des moyens d'alimentation (9, 10) du vérin, des moyens de détection (C) de la position de l'extrémité du bras aptes à désactiver les moyens d'alimentation du vérin lorsque l'extrémité du bras a atteint la seconde position, une commande de by-pass (R) de la commande des moyens de détection apte à réactiver les moyens d'alimentation du vérin. L'invention a également pour objet un procédé de commande d'un tel dispositif.
    • 69. 发明专利
    • DE60326471D1
    • 2009-04-16
    • DE60326471
    • 2003-06-13
    • DEFRANCQ HUBERT
    • DEFRANCQ HUBERT
    • A01B63/111
    • The lifting system comprises in its lower part two arms (7) articulated on a shaft (8) linked to a tractor for attaching two low lateral points (10) of the agricultural tool. In the upper part is a linking element (11) for a third point between the tractor and the tool. The arms are controlled by a lifting actuator (M). A means (S) responsive to the angular position of the arms includes a first transducer (T1) associated with one arm to deliver an electric signal depending on the arm angular position and a second transducer (T2) responsive to the length of the third point linking element to deliver an electric signal depending on the length. An electric circuit with the transducers connected in parallel between a line terminal and the ground connection mixes the signals from the transducers and delivers the signal which controls the lifting means.