| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a carrier device in which a heavy object at the point of action side can be moved automatically to a high or low place by adjusting automatically the weight of a counter weight at the force point side without using power through utilizing the principle of "the balance".SOLUTION: A liquid supply tank which comprises a hollow part capable of storing liquid and a liquid supply plug capable of discharging the stored liquid and is arranged at a high place, and a counter weight at the force pint side including a hollow part which can stretch and shrink are connected to each other by a hose, liquid is supplied to a counter weight near the liquid supply tank, and, on the other hand, the weight of the counter weight is adjusted automatically by returning the liquid from a separated counter weight to the liquid supply tank through the hose. At the position where the weight of loading means at the point of action side connected with the counter weight through a pulley by rope is lighter than the counter weight, rise prevention means is acted, and, on the other hand, at the point of being heavier, drop prevention means is acted. By releasing these means successively, the loading means is automatically moved up and down.</p> |
