| 摘要 |
The invention relates to a lifting assembly ( 10, 20, 30, 40, 50, 60, 70, 80, 90 ) comprising: a rack mast, a platform ( 12, 23, 33, 43, 53, 91 ), and at least one power unit ( 100, 300, 400, 500, 600, 800, 900, 901 ) which is mounted to the mast and which controls the vertical movement of the platform along the length thereof. The invention is characterised in that the power unit comprises a plurality of modular elements including at least one motor block ( 101, 200, 201, 301, 401, 501, 604, 621, 801, 904 ), at least one upper roller box ( 102, 205, 210, 305, 404, 503, 627, 903 ) and at least one lower roller box ( 103, 206, 304, 405, 502, 601, 629, 902 ). According to the invention, each of the modular elements is equipped with mechanical fastening means ( 610, 611, 612 ) which are aligned with the mechanical fastening means of an adjacent modular element.
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