ROTARY FLUID MACHINE AND METHOD FOR ASSEMBLING SAME

摘要

Provided is a rotary fluid machine in which the irregular contact of a crankshaft with a bearing can be reduced by reducing the deflection of an intermediate shaft. A crankshaft (1) is provided with a first crankshaft section (3), a first crank pin (5), a second crankshaft section (11), a second crank pin (9), and an intermediate shaft (7), wherein the intermediate shaft (7) has a shape in which the intermediate shaft (7) has a first side which is located on the first direction (A) side in a longitudinal cross-section which includes the axes of any two of the first crankshaft section (3), the first crank pin (5), and the second crank pin (9), the first side (X) is provided so as to continuously connect a first side-side first connection point which is connected to the first crank pin (5) and a first side-side second connection point which is connected to the second crank pin (9), and the first side-side first connection point is provided at a position displaced further in the first direction (A) than the first side-side second connection point.