| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a transportation dolly which moves up a workpiece placed on a load-carrying platform on the dolly to a predetermined position at given timing and returns the load-carrying platform to a predetermined position without using a power source, such as an electric motor, which needs driving control.SOLUTION: A transportation dolly includes: a taking-up drum 9 which takes up a first wire 25; a spring balancer 20 which is provided so as to move on a rail 18, biases a drawable second wire 26 in a take-up direction, and is connected with the first wire; a lifting table 24 which is connected with the second wire and moved up by the second wire being drawn in; a lifting mechanism 3 from which the second wire is suspended, the lifting mechanism moving up or down the lifting table by drawing in or letting off the second wire; and rising lock means 35 which is provided at the lifting mechanism, restricts upward movement of the lifting table, and releases the restriction.</p> |
