A design of transmission system for a rack source of irradiation of ISG-500 gamma irradiator

A transmission system has been designed for a gamma source rack of irradiator ISG-500 for sterilization of agricultural products. Radiation source rack is an equipment used for the gamma irradiator to irradiate agricultural products which reside in a carrier having weight of 150 kg. The rack sources of irradiation will be pulled up or down from the pond by stainless steel sling. The process of the up and down of the sources rack is controlled by a 2.5 kW induction motor which is coupled by a gear reduction and permanent couplings. This transmission system is also considering of any electrical failure, both central electric source and UPS system, by manual system. The speed of the rack toward its position for ready for operation is 1,57 m / second with two considerations, namely in order to obtain a smooth movement when the rack until the bars of the source and to prevent shutdown due to any collision between the bar and the rack or the carrier. (author)