The request for higher driving speeds and the increasing proportion of transport rides demand suspended axles with respect to driving safety and comfort. As early as in the fifties of the last century attempts were made at the former tractors to reduce the bumps on the vehicle and the driver by suspending the front axle. Here the classical leaf spring was used which had been adopted from coach building. Only with the introduction of the hydro-pneumatic suspension at the Fendt tractors at the beginning of the nineties the suspension has again gained in importance. Today the hydro-pneumatic axle suspension is already implemented in many tractors and agricultural special vehicles and has established itself as standard equipment. A basic requirement for these suspension systems is the adaptability of the system features to the different conditions of application. For this purpose the hydro-pneumatic suspension is optimally suited. The main advantages are the simple realisation of an automatic level control and the progressive characteristic curve. Due to the power density of the hydraulics and the resulting smaller installation space, the hydro-pneumatic suspension provides a significant advantage over the air suspension and mechanical springs the requirements for these suspension systems are increasing. Higher driving speeds with highly differing operating conditions and a simultaneously increasing feeling of comfort, not least pushed by the Directive 2002/44/EC on the minimum health and safety requirements regarding the exposure of workers to risks arising from physical agents (vibration)" call for intelligent solutions for suspension systems, also for contraction machines.
展开▼
