| 摘要 |
<p>A method for improving the mounting accuracy, direction and straightness of a row of piles or a wall formation that can be made of piles or wall profiles (1) to be driven into the ground, in which method the pile or profile wall is (1) driven by means of a special hammering device beside the former one in order to form a uniform wall. On the straight chosen in the method as mounting line a lightened level running through said straight, as a laser beam fan (R), is formed by means of a transmitter (2) sending laser light, and controlled by means of the indication from detector 5,6 installed in hammering device the hammering device (8) driving down profile (1) is adjusted onto the mounting line so that profile (1) fastened to the device gets on being driven into ground to the said mounting line.</p> |
