Investigation of workers’ exposures to vibrations produced by portable shakers

Herein note focussed the attention on the vibration levels issued by two portable shakers models build in different and subsequent times by the same building company, which presents different design and constructive solutions for both the handles. The two tools were used, during tests, by a single operator, expert in the use of this typology of tools due to his job activity during the olives harvesting campaigns; the measurements were carried out respecting the indications contained in the provisions UNI EN ISO 5349. A different dynamic behaviour of the two tools emerged from the tests. Has been highlighted, also, the importance of the evaluation of the vibrations produced by portable shakers with the purposes to carry out studies that aim to the research of technical solutions which allow the reduction of vibrations transmission through the handles and through the shoulder support device of the tool.