VIBRATION ISOLATOR FOR THE OIL PALM MOTORISED CUTTER

Publication Date : 19/06/2019


Author(s) :

Mohd Ikmal H., Abdul Razak J., Mohd Rizal A., Abd Rahim S..


Volume/Issue :
Volume 2
,
Issue 1
(06 - 2019)



Abstract :

MPOB has introduced an oil palm motorised cutter called ‘CANTAS’ that works effectively for palms with harvesting height of below 5-metres. CANTAS which is powered by a small petrol engine has been proven to double up harvesting output compared to manual harvesting. However, the existing CANTAS design generates vibration that may lead to Hand Arm Vibration Syndrome (HAVS) under prolonged exposure. It is necessary that the level of vibration to be managed and controlled. A vibration isolator has been designed and developed which functions to collect and isolate vibration of the motorized cutter. The isolator comprises of a pair of bearing and a spring which the spring functions to reduce the vibration while the bearings dispose the vibration from the motorized cutter. The study showed that the use of isolator reduced the magnitude of HAV at holding points (P1 and P2) by 54 and 45%, respectively. Minimum HAV was obtained when the vibration isolator was fixed at 70cm from the engine. The isolator was tested by a harvester in Banting Selangor who experienced that the isolator helped to reduce vibration effect thus giving him much more comfortable during handling the machine. This invention has further application that can also be extended to other vibration tools such as grass cutter machine, mist blower, pruning machine and so on.


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