Pulsating pneumatic motor

A pulsating pneumatic motor, comprising a housing and an output shaft (1) disposed in the housing, wherein both ends of the output shaft (1) are rotatably connected to the housing, and wherein the pulsating pneumatic motor further comprises a rotor assembly connected to the output shaft (1), wherein the rotor assembly comprises:

• a plurality of cantilevers (2), which are radially and evenly spaced and fixedly connected to the output shaft (1);
• a plurality of roller sets, each of which comprises:
• a pair of rollers arranged on one said cantilever (2) in one-to-one correspondence, wherein each roller set comprises:
• a fixed roller (3) and a movable roller (4), central axes of the fixed roller (3) and the movable roller (4) are respectively parallel to a central axis of the output shaft (1), the fixed roller (3) is rotatably connected to the respective cantilever (2), the movable roller (4) is slidably connected to the respective cantilever (2), and the movable roller (4) is configured to slide along a length direction of the respective cantilever (2);
• a plurality of elastic members (6), each connected between one said movable roller (4) and one said cantilever (2) for pushing or drawing the respective movable roller (4) toward the respective fixed roller (3);
• an air pipe (5), passing through the plurality of roller sets in sequence, wherein the fixed roller (3) and the movable roller (4) of each of the roller sets are respectively in contact with the air pipe (5), so that the air pipe (5) is divided into multiple chambers, one end of the air pipe (5) passes through the housing to communicate with an external high-pressure air source, and the other end of the air pipe (5) passes through the housing to communicate with atmosphere;
• after high-pressure air enters the air pipe (5), the high-pressure air pulsates and expands along the air pipe (5), thereby pushing and pressing the roller sets to move, thereby driving the cantilevers (2) to rotate around the central axis of the output shaft (1) to output power.