DOLLY FOR CONVEYING TROLLEYS

摘要

A dolly (10) for conveying a line of trolleys (72). The dolly (10) being controllable by a remote control transmitter so that the line of trolleys (72) can be manoeuvred by one operator. The dolly (10) is configured so that the rearmost wheels (240) of the rearmost few trolleys (70, 88) do not touch the ground. This increase the traction of two drive wheels (102) disposed underneath the trolleys (70). The traction is further increased by an anti-pivot bar (34) which uses the reaction torque of the dolly (10) to push down in the rearmost trolley (88) and hence apply a further downward force on the drive wheels (102). A gearbox (110) and a throttle control mechanism also contribute to the working of the dolly (10). The configuration of the gearbox (110) allows a relatively large torque to be applied through a relatively small gearbox and the throttle control mechanism has an overrun clutch which is very simple yet effective.