Monitoring work parameters for road transport means
2018
Ciuperca, R., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Nedelcu, A., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Zaica, A., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Anghelet, A., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania)
The performance of the transport means is also determined by the rolling systems, which have major economic and environmental implications caused by the loads to be carried, the travel speeds, the constructive and functional characteristics, the air pressure in the tires with direct implications on the compaction and wear of the rolling track, tire tread wear, rolling resistance and implicitly of the cost of the transport operation itself. The subject of the present paper is the research carried out on a moving articulated vehicle made up of an agricultural tractor and semi-trailer, aiming to continuously monitor the dynamic parameters of the vehicle. We present the mathematical relations expressing the action of the semi-trailer on the tractor, represented by connecting forces, moments and loads, identifying in particular the reaction of the ground on the semi-trailer rolling system and load transfer from the semi-trailer to the tractor, which contributes to its additional loading, these two parameters being followed. For the continuous measurement and monitoring of the two parameters, in real time, a load monitoring installation was built and assembled on the articulated vehicle, consisting mainly of force transducers, force amplifiers, micro PLC operating terminal and other connection elements. Registrations made during the experiments are managed by software specially created for these researches. Experiments were carried out both for stationary and for all travel regimes of the articulated vehicle, namely acceleration, deceleration and sudden braking, the results obtained from the tests allowing us to establish the veracity of the mathematical relations, on the one hand, and the evolution of the measured parameter value in the three travel regimes, on the other hand.
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