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    • 57. 发明专利
    • DE69903063D1
    • 2002-10-24
    • DE69903063
    • 1999-11-12
    • DEFRANCQ HUBERT
    • DEFRANCQ HUBERT
    • B62D49/02
    • A front lifting equipment for an agricultural crawler tractor with considerable offset (D) of the front art relatively to an intermediate girder (1) whereto are fixed the track-layer assemblies (Cg), an axle (4) being provided at the rear. The equipment includes a reinforcing member arranged on each side of the tractor, fixed to the intermediate girder and to the rear axle, and formed by a flank (18g) substantially parallel to the tractor median vertical plane, and whereof the height is arranged to ensure satisfactory mechanical resistance in spite of a reduced thickness such that adjusting the narrow gauge track of the tractor is not hindered. A link (L) between the front part (19g) of the reinforcing flank and a fixing point located towards the tractor front is provided for picking up effort.
    • 60. 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.