| 摘要 |
<p>A lifting apparatus, particular a mobile lifting apparatus (2) for assisting patients using wheeled chairs, comprises a mainly horizontal lifting platform (4) and two pairs of scissor lifting arms (8, 10) which at opposite sides of the lifting apparatus (2) being pivotally interconnected in hinge points (12), one of said pair of scissor arms (8) at one end having support wheels (14) and at opposite end being pivotally connected with the lifting platform (4), while the other pair of scissor lifting arms (10) at one end having non-skid rest parts and at the opposite end being in sliding contact with an underside of the lifting platform (4), swing movement causing means in the form of guiding rollers (26) at opposite ends of a transverse beam (30) being positioned between cam discs (22, 24) so as to cause swing movements of said pairs of scissor lifting arms (8, 10) when operating a displacement force actuator (32) inserted between said transverse beam (30) and a twisting-stiff connection member (20) between end parts of said other pair of scissor lifting arms (10) at said end thereof being in non-skid contact with a support surface, e.g. a floor surface, said cam discs (22, 24) being secured on said pairs of scissor arms (8, 10) at opposite side thereof as seen from said twisting-stiff connection member (20), so as to cause the lifting platform (4) to be lifted up when displacing said guiding rollers (26) towards said hinge points (12) and to cause the lifting platform to be lowered when displacing said guiding rollers (26) away from said hinge points (12).</p> |
