Abstract:For the problems that existed in the original traveling mechanism design scheme of larger traveler of oneway gantry crane in Shannipo Hydropower Station, such as complicated maintenance and preservation procedures of articulated equipment and easy to rail gnawing of pulleys, etc., this paper proposed a new design scheme. In the new scheme, a new structure design was adopted to instead of articulated equipment while crane was running on the whole arc orbit, the redundant guide pulleys were cancelled and the tread width of pulleys was chosen as sum of standard pulley width and derail size. The finite element analysis showed that the strength and stiffness of gantry girders and legs were both meet requirements. And the gantry crane was in good operation condition after it was put into service.

Keywords:one way gantry crane;arc orbit;articulated equipment, rail gnawing, tread width, finite element analysis