Low-noise piston type air compressor

The utility model discloses a low-noise piston type air compressor which comprises a bottom plate, idler wheels convenient to move are arranged on the lower wall of the bottom plate, and a push handle is fixedly connected to the position, close to the left end, of the upper wall of the bottom plate. The openable soundproof cover is convenient to maintain, air inlet and air outlet are both connected to the soundproof cover through hoses, vibration is prevented from being transmitted to the bottom plate through a vibration reduction pad and a vibration reduction sleeve, the first sound absorption plate and the second sound absorption plate are arranged on the inner side wall of the soundproof cover, noise generated during air inlet and air outlet is absorbed as much as possible, and therefore low noise is achieved, and the noise reduction effect is achieved. The looseness degree of the belt is detected through the detection assembly, and the screw type electric telescopic rod is stretched according to the detec