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Scheda pubblicazione
Titolo:
Development of a drivehead for the coupling between power take off drive shaft and operating machine within the project CRA-ING and MED
Autori:
Vassalini, G.; Fornaciari, L.; Pochi, D.,
Anno:
2008
Lingue:
ENG, eng
Rivista:
International Conference: September 15-17, 2008 Ragusa - Italy “Innovation Technology to Empower Safety, Health and Welfare in Agriculture and Agro-food Systems” CIGR-AIIA, Ragusa 15 17 sett. 2008
Tipo di pubblicazione:
Elettronico
Luogo:
Editore:
Riassunto in Italiano:
Riassunto in Inglese:
Connecting and disconnecting the PTO-drive-shaft to the Power-Input-Connection (PIC) of an operating machine is often made difficult by the presence of most protection models. The locking system of the PIC yoke is actuated by means of both the hands and can be reached through a narrow space between the PTO-drive-shaft cone of guard and the PIC protection: sometimes, it is necessary to disassemble one of them. The aim of the project was to develop a protection that, through a proper opening, could simplify the connection/disconnection between PTO-drive-shaft and PIC, keeping in compliance with the requirements of the ISO EN 12100-2: 2003, ISO EN 4254-1:2005 and EN 953 1997. In the first phase of the project, the standards’ general requirements for the product-design and construction of fixed and mobile guards have been studied. It emerged that a mobile guard was needed, planned for frequent accesses to the danger zone, with the following requirements: 1) it can be opened only by means of a proper tool; 2) if opened, it must keep solid to the operating machine; 3) it must automatically close and lock itself without any tools; 4) the type of risk against which it has been developed has to be shown on it. As a consequence of the characteristics of its components, the prototype is in compliance with the mobile guards standard requirements. A further contribution to the increase of safety level is represented by a device determining the automatic closure of the guard. Finally, the prototype allows to completely cover the PTO-drive-shaft transmission system. It makes easier the connection/disconnection between PTO-drive-shaft and PIC and the maintenance of the PTO-drive-shaft. It could hopefully contribute to reduce the frequency of accidents.
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