Drills of a free fall

Drills of a free fall.

Drills of a free fall are represented by the tool for sampling for enough quietly shipped deposits top sloyakonsolidirovanny or not. The drill stiffening ribs, falling of weight and a sampler consists of a frame of a free fall. By means of the lifting device (crane beam) onboard the boat, the sampler falls in a free fall. On the own weight and speed the device gets into the soil. Depth of penetration of partial immersion defines structure of the soil.