Pneumatic vibration device with rotatable piston shaft

A pneumatic vibration device with a rotatable piston shaft, comprising a piston body and a gas diverter, wherein the piston body comprises a piston shaft, an input shaft and a piston cylinder body, the piston shaft is located in the piston cylinder body and comprises a hollow spindle, two ends of the spindle are connected to a first piston and a second piston through connection bearings respectively, the first piston and the second piston are connected through an inner sleeve located outside the spindle, and the spindle is connected to a rotary connection member located between the first piston and the second piston;

• the input shaft sequentially penetrates through the piston cylinder body and the inner sleeve to be matched and connected with the rotary connection member;
• a side wall of the first piston and a side wall of the second piston are connected to the piston cylinder body in a sliding and sealing manner, a first piston cavity and a second piston cavity are formed between the side wall of the first piston and the piston cylinder body, as well as between the side wall of the second piston and the piston cylinder body, and the piston cylinder body is provided with a first gas hole communicated with the first piston cavity and a second gas hole communicated with the second piston cavity;
• the gas diverter comprises a first gas diversion port and a second gas diversion port, and the first gas diversion port and the second gas diversion port are communicated with the first gas hole and the second gas hole respectively.