Engineering justification of a rotary stand for engine repair and maintenance

Abstract

The paper presents the design and engineering justification of a stationary rotary stand for engine assembly and disassembly during repair operations. The stand provides secure mounting of the cylinder block, controlled rotation about a horizontal axis and convenient access to the lower, side and end surfaces of the engine. The proposed structure includes a welded frame, two uprights with reinforcing gussets, a worm geared drive, a bearing-supported rotary shaft, traverses and adjustable screw supports. Calculations were performed for an engine mass of 350 kg. The required torque, drive power, shaft diameter, traverse strength and stand stability were determined. The use of the stand is expected to reduce the labor input of lubrication-system repair by 15%.