Self-propelled forage harvesters (SFH) are used for cutting forage such as grass or maize for preservation in a silo. High throughput and an optimal quality of feed are the reasons that the SFH has expanded its market position in the last decades. Most of the energy is used for the cutting process in a knives drum. For a targeted process optimisation in consideration of cutting energy and quality, it is necessary to analyse the process with different cutting parameters. Research is based on the knife drum unit aim of the presented research is to analyse the cutting process uncoupled from the rest of the chopping process. This is realised with a test rig which can measure cutting forces and records the motion of the cutting crop during the cutting process at high cutting seeds, as well. The acquired force data record of knife and shear bar and recording of the cutting distance are the basis for calculating the specific cutting energy. The processes cutting, transporting and transfer in a knife drum of a forage harvester affect each other. Only when the influences of the processes parameters of the whole chopping process are know, can the optimisation be successful. The test rig consists of a horizontally rotating rotor supported in a rigid base frame. The holding device of crop and an integrated shear bar are fixed on the base frame. The rotor is driven by an electric motor with integrated frequency converter. Knives and holding device of crop are completely connected with the force sensors so that no force bypass can emerge. Based on substituted mechanical systems the cutting process has been analysed and thus the basis for a simulation is provided. Further cutting parameters which have not been examined in the tests because of the too high complexity can be varied.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The cutting process in a self-propelled forage harvester


    Additional title:

    Der Schnittvorgang in einem selbstfahrenden Feldhäcksler


    Contributors:


    Publication date :

    2004


    Size :

    6 Seiten, 5 Bilder, 7 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A Flexible Hydraulic System for a Self-Propelled Forage Harvester

    Smith, Larry N. / Burk, Ron | SAE Technical Papers | 1985


    SELF-PROPELLED HARVESTER

    BERA YAN FILIPP / LENEKE MARKUS / BLAJSHVITS SHTEFAN | European Patent Office | 2018

    Free access

    HYBRID SELF-PROPELLED COMBINE HARVESTER

    BONDIOLI CARLO / BONDIOLI CLAUDIO | European Patent Office | 2024

    Free access

    Self-propelled small mountain harvester

    ZHOU LIYING / ZHOU ZHIJIN / LIANG YU | European Patent Office | 2021

    Free access

    Remote control self-propelled potato combine harvester

    SUN WEI / ZHAO ZHIWEI / WANG HUCUN et al. | European Patent Office | 2022

    Free access