| 摘要 |
<p>The carriage has a support surface for an impact tool with a target unit, to make holes in the ground by compression. The carriage has a reversing block, and is in contact with the ground via ground spikes (81) in a base plate (88). The reversing block consists of two blocks (76,77) retained in spring-loaded parallel guides (78,79). In vertical position of the guides, at the contact points with the housing of the impact appliance, the blocks are at a distance to each other, which is larger than the external housing dia. One of the guides is extended, to form a lever to lift the blocks. The target unit consists of a direction finding frame with a plumb line, and/or a sight.</p> |
