The utility model discloses a rotor shaft supporting structure with an anti-vibration rubber sleeve, and particularly relates to the technical field of rotor shafts, the rotor shaft supporting structure comprises two supporting seats and a rotor shaft, one end of the rotor shaft passes through the two supporting seats, an inner frame is movably arranged between the two supporting seats, an
extrusion assembly is arranged in the inner frame, and the
extrusion assembly is provided with an anti-vibration rubber sleeve. And the
extrusion assembly comprises a bearing cylinder, a
piston rod, a sealing
rubber ring, a spring, a connecting plate and an extrusion plate, one end of the bearing cylinder fixedly communicates with the inner frame, and one end of the
piston rod extends into the bearing cylinder. According to the utility model, the plurality of extrusion plates approach the rotor shaft and apply uniform extrusion force, and the uniform extrusion force is distributed in the circumferential direction of the rotor shaft, so that the
radial displacement of the rotor shaft can be effectively restrained, and the stability of the rotor shaft in the supporting seat is enhanced, and the rotor shaft is prevented from being damaged when rotating at a high speed. The vibration and shaking resistance is remarkably improved, the operation is simple, and the strength between the rotor shaft and the supporting seat is conveniently improved.