Ground cultivator with transverse rotors - has rear rotor set shallower and producing finer crumbled structure

摘要

The ground-cultivator, particularly a crumbler, has a driven transverse front rotor with radial tools, and a driven transverse rear one adjustable for height in relation to the front one. The rear rotor (6) is set to work more shallow compared with the front one (18), and the ratio of tool densities and rotational speeds between the two is such that the rear one produces a more finely crumbled structure. The front rotor can have fewer tools and be driven more slowly, and their direction of rotation can be reversible individually or together, while the circles described by the two sets of toolscan overlap.