Patent ID: 6755283
Filing Date: 2004-06-29
Classification: B66B,F16H,Y10T

Abstract:
An elevator, comprising:a compartment; and a spiral propeller which comprises: at least two spiral lifting wheels, each having an axle and two or more spiral external teeth thereon, being symmetrically distributed and affixed in a middle of two sides at a top of said compartment so as to drive said compartment upwardly and downwardly; two or more guide brackets each having a vertical supporting bracket; fixed tracks supporting a plurality of locking wheels, wherein said fixed tracks are set between said vertical supporting brackets of said guide brackets; said locking wheels interlocked with said spiral lifting wheels through said spiral external teeth, wherein each of said interlocking wheels is rotatable along an axial direction thereof and evenly and vertically affixed at a predetermined location of said respective fixed track along said vertical supporting bracket of said respective guide bracket, wherein a contact cooperation part positioned between an interlocking surface of each of said interlocking wheels and an exterior wheel surface of said respective spiral lifting wheel is in a linear shape and a vertex of a cone of each of said interlocking wheels is in accordance with said contact surface of said exterior teeth of said respective spiral lifting wheel; two or more location limiting brackets each having a first end and a second end, wherein said first ends of said location limiting brackets are affixed at upper ends of said spiral lifting wheels respectively to restrict said spiral lifting wheels during lifting for close interlocking and cooperation with said interlocking wheels while said second ends of said location limiting brackets are mounted on said vertical supporting brackets of said guide brackets respectively; an electromotor; a gear drive device, which is driven by said electromotor, connecting and affixing said spiral lifting wheels on said compartment by connecting said two axles of said spiral lifting wheels, running synchronously; and a hydraulic brake comprising a brake shoe to stop running by locking said axles of said spiral lifting wheels.