Screening and crushing bucket

The invention discloses a screening and crushing bucket, which belongs to an engineering machinery accessory. The screening and crushing bucket comprises a bucket body, a hydraulic motor, a screening and crushing mechanism, a transmission case and a transmission mechanism, wherein the bucket body comprises two side walls which are oppositely arranged, T-shaped grooves which are convenient for installing the screening and crushing mechanism are formed in the lower sides of the two side walls, the transmission case is arranged outside one side wall and covers the T-shaped groove and a driving wheel mounting hole, the screening and crushing mechanism comprises three rolling shafts installed in the T-shaped grooves and knife boards installed on the rolling shafts, no gap exists between the adjacent knife boards, three driven chain wheels are fixedly connected to the same end of the three rolling shafts respectively, the hydraulic motor is directly connected with a driving chain wheel, the driven chain wheel I is driven by the driving chain wheel through a chain, the driven chain wheel II is driven by the driven chain wheel I through a chain, and the driven chain wheel III is driven by the driven chain wheel II through a chain. The screening and crushing bucket can be used for screening and crushing on any occasion and has the advantage of low cost.