DEVELOPMENT OF BLOCK TRANSFER DEVICE TO AUTOMATE AND SAVE LABOR

Abstract

Wave-dissipating block removal work is conventionally done by workers or divers using wire ropes. However, the work area is unstable and this work is dangerous. A device for transferring wave-dissipating blocks was developed using net chains to allow for automation and labor saving. Model block transfer experiment and block removal work ware done. The results showed that by adjusting work conditions, the working time efficiency under good visibility situations is 3 min./piece and that for poor visibility situations is about 4-6 min./piece. The cost for transferring a block is about 1/3 of the conventional manual method.