| 摘要 |
<p>At least two drilling units (8,9) are used for sampling from different earth layers, comprising drills, drilling head (5), and adjusters (1,7) for the head. Collecting units (14) are incorporated, each comprising cleaning units (13), removable sample bowls (14), and guide sockets (16). The sample bowls comprise ring-shaped collecting units which accommodate all the earth drilled out of the ground. In each bowl is a rotating stirrer (17) so that earth fed from the soil is mixed during the whole sampling process. The cleaning units comprise fixed or rotating elastic rods (13) or brushes stagelessly adjustable in or over the sample bowls, and which clean away earth from the drills when the drilling crown has been reversed.</p> |
