Machine Description
74
5.6 Feed drive
The feed drive compresses the crops and conveys them to the chopper unit.
The feed drive consists of a housing with six rollers. The lower three rollers are permanently
mounted in the housing and the upper roller pack is spring-mounted. The spring force allows the
upper rollers to exert a defined prebaling pressure on the crops.
Drive
The lower intake rollers are powered by the hydrostatic drive by means of a cardan shaft. From
there, the drive energy is distributed via the lower and upper roller gearboxes, which drive the
upper rollers.
The stepless speed adjustment of the feed drive, which can be performed from the cab, enables
the chop length to be adjusted steplessly and manually.
Fig. 25
Metal detection
The front lower roller is equipped with metal detection system that reacts to magnetisable steel.
For this reason, the front upper and the front lower rollers are made of stainless steel.
If a material passes through the magnetic field which triggers metal detection, the front
attachment drive is switched off and the intake is stopped by the quick stop function.
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