engleski

Identification of the Dynamic Activity of the Pneumatic Hand Grinding Machines System in the Shipyard

In this paper are shown the measurement results of the dynamic change intensity of compressed air consumption, during the processes of grinding plate edges, of the relief of the cut-off edge surface and welds with the more hand grinding machines on the ship sections. The applied methods of measurement was based on recording power input in the compressor and the intensity of compressed air consumption on distribution network branchs, where are connected the pneumatic hand grinding machines during the grinding operations. The mathematical relations between the developed grinding power and the number of grinding machines in common operation, the value of intermittence and the mathematical models of the subsystem for compressed air collection as propulsive medium were obtained. The following has been found out: with such a relatively favourable arrangement of grinders no interference occurred as in the closed spaces of the ship and the interval when a larger number of grinding machines were used in common operation occurred rarely during working shift besides, during the grinding process the amount of the developed effective power was considerably lower than the possible one.

hand grinding machine, shipyard, compressed air, power, energy

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