Abstract: This invention will involve in the technologies of fluid expanding or compressing on fluid channel, which belongs to the form of volume, and it has particularly decisive meaning on the reliability of the outstanding performance of bias cylinder rotary expansion or compressed mechanism with blades for traversing shaft. This mechanism is originally invented by me, but due to the rotational and technological factors, the reliability is not strong and the profit is not great, so I hereby make this invention. Because this configuration mechanism is very strong, and it seems similar, but in fact, there is a big difference between the features of this invention and the original invention.