STRUCTURE OF REINFORCING MEMBER OF LOWER FRAME FOR OIL HYDRAULIC CRANE

摘要

PURPOSE: A structure of reinforcing member of lower frame for oil hydraulic crane is provided to reduce load of reinforcing member and material costs with the same function as the prior reinforcing member and to make welding operation to be easy. CONSTITUTION: In a structure of reinforcing member of lower frame for oil hydraulic crane, a reinforcing member(1) attached between an end side bottom surface of a lower top side frame(11a) and a lower lateral side frame(11b) is formed as an incorporative plate sheet member. A shape of longitudinal section of the reinforcing member(1) is of semicircle, while a shape of cross section is of triangle.