| 摘要 |
A scissor lift mechanism ( 1 ) having at least two scissor elements ( 4, 5 ) connected in pairs by a swivel axis ( 3 ). The drive ( 11 ) for raising and lowering the scissor elements ( 4, 5 ) is provided by a traction member ( 13 ). To reduce the driving power required for operation while at the same time reducing control complexity, the scissor lift mechanism ( 1 ) is equipped with two coupling bridges ( 14, 15 ) situated on opposite sides of the swivel axis ( 3 ) and pivotably supported by thrust struts ( 22, 23 ) on each of the two scissor elements ( 4, 5 ), respectively. The distance "a" between the coupling bridges ( 14, 15 ) and the resulting height of lift "h" are easily variable by applying a tractive force "F" via the traction member ( 13, 25 ) which is guided around reversing rollers ( 16 ) and back and forth along a plurality of generally parallel paths ( 18, 19, 20, 21 ) between the two coupling bridges ( 14, 15 ).
|
