| 摘要 |
<p>Parallelogram lift for motor vehicles, comprising a pair of base longitudinal members (2), a pair of runways (12) and at least two pairs of arms (14, 14′) hinged to the longitudinal members (2) and to the runways (12) and associated with members (30) for varying the inclination of said arms (14, 143 to the longitudinal members (2) and to the runways (12), wherein each longitudinal member (2) comprises a fixed base (4, 6) anchored to the floor, and a counter-base (8) slidable axially relative to the fixed base and carrying the arms (14, 143) hinged thereto, and also comprises for each longitudinal member (2) an auxiliary arm (22) hinged at its lower end to a support (26) fixed to the floor in alignment with the longitudinal member and pivoted at its upper end to the central point (20) of the adjacent main arm (14), the length of the auxiliary arm (22) between its pivotal axes (24, 20) being equal to one half the length of the main arms (14, 14′).</p> |
