Installation device for e.g. drainage lint in bed of watercourse, has lance for driving drainage lint mounted on vertically movable auxiliary column

摘要

The lance (10) for driving the drainage lint (11) into the watercourse bed (5) is suspended from and can be moved up and down an auxiliary column (16), which in turn can be moved up and down relative to the main column (8). In the lower position the auxiliary column protrudes in a downwards direction beyond the main boom. The lance can be moved up and down relative to a main boom is secured to an undercarriage (6). A system is provided for supplying and securing the drainage lint to the lance.