Design and Fabrication of Bevel Gear Operated Screw Jack

For productivity, efficiency and effectiveness the technology and researcher all over the world are working continuously. In the paper the detailed design procedure is represented. The modification of the conventional scissor jack is present in the design. The problems are correlate with the conventional jacks with the ergonomic snags experienced by the operators due to prolonged bending or squatting of the positions during the operation. This problem of waist pain and backaches are as a result of continuous turning for wrench or crank shaft in an uncomfortable position for the long period. These led to the design and modification of quick lifting screw jack with gear arrangements that are safe, reliable and capable of raising or lowering heavy load with little effort. The results showed that the crank and gear mechanism would help to reduce the difficulty in operation, reduce time, increase the efficiency and the effectively control the difficulties concomitant with Ergonomics, which is an ultimate sensitivity in the design process and manufacturing.