LEMKEN antislip control for soil rollers
Rollers are commonly used in seedbed preparation, and stubble cultivations, to control machine depth and reconsolidate cultivated soil. In light soils, soil can sometimes build up in front of the roller, leading to increased draft requirement and reduced performance of the roller. At this point the roller will turn slower than forward speed, and may even stop turning. LEMKEN has developed its new antislip control to overcome this problem. The innovative antislip control was awarded a silver medal by DLG at the Agritechnica 2011
- With LEMKEN antislip, a sensor monitors the rotational speed of the roller. This is compared to the machine forward speed, as measured by the drill’s impulse wheel, or the tractor’s wheel sensor. Slip is calculated as the difference between the two measured speeds. On trailed or semi-mounted machines (e.g. Compact-Solitair), if there is too much slip, weight is transferred from the roller to the machine chassis which lifts pressure from the roller and reduces slip. The system can also be used on mounted machines by connecting it to a compatible TIM (Tractor Implement Management) system. In this case, the measurement of slip on the roller can be used to regulate the tractor's three-point linkage. For mounted machines that are operated with the lower link arms in a float position, the same effect can be achieved by altering the angle of the top link. Raising, and moving forwards, the position at which the top link meets the machine, will reduce pressure on the roller.
- The antislip control significantly eases the driver's workload because the roller pressure in changing soil conditions is automatically regulated, thereby enabling smooth operation. The system also reduces draft requirement of the machine. LEMKEN antislip allows smaller diameter rollers to be used, without risk of stalling, meaning users can now choose a lighter weight roller, if that is more suitable for the tractor capacity. All in all, roller pressure adapted to the soil conditions results in an improved and more uniform soil structure, which in turn enhances plant growth conditions and ultimately increases yield.