He and his team investigate the best ways to make a combine harvester even more efficient, environmentally sound and comfortable for the operator. The use of electric actuators is important in this regard.
Precise setting of the machinery is especially important for achieving the best possible yields, and precise positioning plays a key role here. LINAK electric actuators LA36 can provide precise positioning. They perform this task considerably better than hydraulic systems, where feedback and positioning require considerable technical complexity.
Since feedback on position can be provided as either an analogue or a digital signal, integration into the bus controls can be performed without difficulty.
One of the major applications for an electric actuator in a combine harvester is a straw distribution system. On request, New Holland combines are equipped with the Opti-Spread straw spreader, which is attached behind the straw chopper. The farmer is able to control the width and direction of straw ejection. Two powerful spreader discs are set using LINAK LA36 actuators.
“We use electric actuators very frequently because, in contrast to hydraulic systems, there is no risk of leakage,” says Michaël Carpentier.
It is about being sturdy
LINAK LA36 actuators satisfy robustness and stroke strength requirements. Its robust aluminium housing and high protection rating (IP66 dynamic, IP69K static) enables it to carry out a wide range of tasks in a large number of agricultural applications.
Robustness is not merely a question of protection against external factors, such as dirt, dust and water.
Operational reliability is key in the event of impact and vibration. For example, the LA36 adjusts the sieve setting for harvesting on a hillside. Depending on the slope, the actuator induces a side impact of sieves, so that threshing can always take place on even loaded sieves.
“The actuator is constantly exposed to vibration,” Carpentier explains. “It has to continue to operate safely and problem-free despite this vibration”.
LINAK spends much time and effort during development on testing actuators in a variety of operational environments. They must be able to withstand cold, heat, liquid chemicals and impacts. Only after passing these tests are they allowed to go into production and finally sent to the customer.
Depending on the model, up to 13 actuators may be fitted to a combine harvester.
Contact LINAK TECHLINE® for specifications and even more actuator solutions for combine harvesters and other farming equipment.