Abstract:Compared to the same five-cylinder reciprocating pump power triplex pump is small, and easy migration, but the five-cylinder pump on account balance, the distribution of the crankshaft on the crankshaft that has distinctive features, the angle between adjacent crankshaft is 144 degrees, so that more complex force state crankshaft. In particular, the binding is to increase the crankshaft bearings, the resulting statically indeterminate problem. Through the establishment of crank angle for the variable to force the expression, use of Mathcad software are in various states crank force status, while the finite element analysis tools by Ansys get the stress distribution in various states, resulted in a five crankshaft torque more smoothly The conclusion explains why the use of normal operating conditions clockwise, counterclockwise on the crankshaft strength even better. Check on the crankshaft and further optimization of important reference value.