| 摘要 |
PURPOSE: A shaker is provided to have an uncomplicated and simple structure but to stably operate, thereby freely controlling the extent of vibration on a real time basis. CONSTITUTION: A shaker comprises body units (20, 30), an actuator (10) and a motor (50). The body is connected to at least one pipe which vibration is given to. The actuator extends or folds a chain. The chain and the body are connected for operation. The vibration of the body is controlled depending on the extent of the extension or of the folding of the chain. |
