| 摘要 |
PURPOSE:To drive a pile by vibration of high frequency by a method in which two electromagnets are fixed at an interval horizontally to a weight, and a link mechanism to convert horizontal movement into upward movement is provided to the part to reciprocally move between the electromagnets. CONSTITUTION:Electromagnets 1a and 1b, consisting of coils 11a and iron cores 12a, are set in mutually facing manner on both sides in a weight 10, and movable iron cores 2a and 2b connected with a connector 5 are set between the electromagnets 1a and 1b. A lever 6a whose one end is connected to the weight 5 and a lever 6b whose one end is connected to an upper guide 31 are connected with the connector 5. When alternately exciting the electromagnets 1a and 1b, the movable iron cores 2a and 2b and the connector make a reciprocal movement, and the horizontal movement is transmitted as a vertical movement to the upper guide through the lever 6b and the vibration is applied to the pile P. |
