Dust collector

Dust collector, the dust collector comprises a dust collection container, a machine head arranged on the dust collection container, a car hopper assembled on the dust collection container, and two wheels assembled on the car hopper, the car hopper comprises a bottom wall, two side walls located on the left side and the right side of the car hopper and corresponding to the two wheels in a one-to-one mode, a rear wall and a car hopper containing space. The side wall is provided with a shaft barrel, an accommodating cavity and an upper edge part; the containing cavity is located between the shaftbarrel and the car hopper containing space. The shaft barrel is provided with a channel which extends to the accommodating cavity and is directly communicated with the accommodating cavity; the wheelshafts are partially contained in the channels, the wheels are located outside the car hopper containing spaces and located under the corresponding upper edge parts, each wheel comprises a hub and awheel shaft, the wheel shaf