| 摘要 |
In a vertical lift for use in exterior locations to raise and lower a person, the lift comprising a support frame, a tower frame mounted on the support frame, a carriage secured to the tower frame so as to be vertically movable with respect thereto, a drive system associated with the tower frame to raise and lower the carriage between an upper and a lower position, and control means to enable a person using the lift to activate and deactivate the drive system as required, the improvement characterized in that the tower frame comprises a plurality of vertically extending guides secured to the tower frame and a carriage guide frame secured to the carriage and movably associated with the guides, and the drive system comprises a vertically oriented drive screw which, when activated, rotates in one direction to raise or in the opposite direction to lower a nut seated thereon so as not to rotate therewith, the guide frame supported by the nut for raising or lowering therewith. The lift according to the present invention is well suited as an exterior vertical lift for lifting disabled persons from the ground level up to a higher, main floor level of a building.
|
