Wide support sweeping brush of sweeper

A wide support sweeping brush of a sweeper comprises a wide support plate, a motor device, a brush disk and an up-down swinging connecting piece. When the wide support sweeping brush is in use, a pushing plate is pushed out of a sliding way through an oil cylinder, and the bottom face of the wide support plate makes contact with a supporting roller, thus the wide support plate is pushed out and taken back rapidly, and the brush disk makes contact with the ground. Forward-backward swinging, caused by advancing resistance, of the brush disc is prevented through the wide support plate. The wide support sweeping brush of the sweeper is reasonable in design and easy to operate. The brush disc is prevented from swinging forward and backward through the wide support plate after encountering the advancing resistance, and the situation that cleaning is not thorough due to shaking of the brush disc is avoided. Through the supporting roller, the wide support plate can be taken back conveniently, and the flexibility of t