Patent ID: 7740438
Filing Date: 2010-06-22
Classification: E04H

Abstract:
1. A trolley, comprising a main body capable of moving, provided with at least an outer track of a predetermined length on the lateral part thereof; and a clamping means, provided with at least a first and a second moving plate capable of moving along the main body, each provided with a block including a guide track of a predetermined length on a bottom surface thereof to be defined at the outer side of the outer track; and at least a pair of clamping claws, respectively disposed on each moving plate, each comprising a support; a clamping member arranged on the support; a driving wheel, fixed on the support for matching with the guide track disposed in the block of the moving plate; at least a pair of vertically moving wheels, fixed at the end of the support where the driving wheel is disposed and matching with the outer track; at least a pair of positive stops, wherein the first positive stop is arranged on the bottom surface of the support for matching with the outer track, the second positive stop is arranged on the top surface of the support for matching with the block of the moving plates; and at least a power push rod for driving the first and second moving plates to generate relative movements therebetween.