1. Agricultural harvesting machine (1), in particular field chopper with the crushing device (2) which comprises a plurality of blades equipped with (4) shredding drum (3) rotatable relative to a stationary shearbar (5) for chopping crop material fed (7) during the cleaning in the field formed by the blades (4) and the counter-plate (5) of the gap (6) of cutting, characterized in that it comprises a device (8) for adjusting the number (n) of the drum speed (3) depending on the characteristics b Araban (3), at least during maintenance of the process of grinding apparatus .2 (2). Agricultural harvesting machine according to claim. 1, characterized in that the characteristic of the drum (3) is its equipment knives (4) .3. Agricultural harvesting machine according to Claim. 1 or 2, characterized in that the characteristic of the drum (3) is a form of its konstruktsii.4. Agricultural harvesting machine according to claim. 1, characterized in that during servicing drum provided (3) with a longer distance between successive blades (4) with a higher number (n) of revolutions than the drum (3 ) with a smaller distance between successive blades (4 ). 5. Agricultural harvesting machine according to claim. 1, characterized in that the maintenance process comprises bringing into action one of the intended drum (3) tools (17, 19) .6. Agricultural harvesting machine according to claim. 1, characterized in that the tool is a grindstone device (17) for the blades (4) of the drum (3) .7. Agricultural harvesting machine according to claim. 6, the difference1. Сельскохозяйственная уборочная машина (1), в частности полевой измельчитель с измельчительным аппаратом (2), который содержит оснащенный множеством ножей (4) измельчительный барабан (3), выполненный с возможностью вращения относительно неподвижной противорежущей пластины (5) для измельчения подаваемой убранной массы (7) в процессе уборки в области образованного ножами (4) и противорежущей пластиной (5) зазора (6) резки, отличающа
