Hydraulic platform lift, especially for motorcycles

Details Hydraulic platform lift, especially for motorcycles Hydraulic platform lift, especially for motorcycles

B - Operations, Transporting

25

H

B25H 1/00 (2006.01) B66F 7/08 (2006.01)

Patent

CA 2217361

The present invention relates to a hydraulic platform lift, especially for motorcycles, having a parallelogram chassis in which a hydraulic cylinder supported on the sub-frame is articulated on one of the two parallel lifting arms. It is the aim of the invention to provide such a platform lift having a substantially better intrinsic weight/lifting power ratio than comparable prior art types. The invention attains this aim by means of a platform lift of the type initially described in that the hydraulic cylinder (1) engages with an articulation (8) beneath the pivoting axis (7) on the lifting arm (4) which has a downwardly facing projection (9) in this region for that purpose, in order to provide a suitable lever arm (15) to transmit the power from the hydraulic cylinder (1) and in that there is a diagonal tie arrangement (5) connecting the supporting point (2) of the hydraulic cylinder (1) on the sub- frame (3) to the lifting arm (4), the articulation (6) of which on the lifting arm (4) is coaxial with its pivoting axis (7).

L'invention concerne une plate-forme élévatrice hydraulique, notamment une plate-forme élévatrice pour motos, constituée d'un châssis en forme de parallélogramme dans lequel un vérin hydraulique prenant appui sur le châssis inférieur est articulé à un des deux bras de levage parallèles. L'invention a pour objet une plate-forme élévatrice présentant un rapport poids propre/puissance de levage nettement meilleur que celui des plates-formes élévatrices comparables connues à ce jour. Dans cette optique, l'invention consiste en une plate-forme élévatrice du type susmentionné, caractérisée en ce que le vérin hydraulique agit sur le bras de levage (4) par l'intermédiaire d'une articulation (8) située au-dessous de l'axe de pivotement (7), le bras de levage (4) présentant, dans sa partie inférieure, une saillie (9) dirigée vers le bas pour former un bras de levier (15) approprié à la transmission de la puissance du vérin hydraulique (1), et en ce qu'un tirant (5) relie le point d'appui (2) du vérin hydraulique (1) sur le châssis inférieur (3) au bras de levage (4), le point d'articulation (6) de ce tirant (5) sur le bras de levage (4) étant coaxial avec son axe de pivotement (7).

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