Concrete mixer

The utility model discloses a concrete mixer, footboard on including the fuselage and being located the fuselage, the both ends of fuselage outer wall be provided with respectively with the footboard rotates the mounting panel of connecting, the mounting panel is kept away from one side of footboard has set firmly the connecting plate, be provided with limiting plate group on the connecting plate, it is provided with the locating pin to slide in the limiting plate group, the locating pin is close to hold for hemisphere one side of footboard, be provided with on the footboard and be used for injecing the spacing groove of locating pin, the spacing groove is used for holding including being located both ends the hemisphere hole of hemisphere end, the limiting plate inter block be provided with with the locating pin supports and tightly is in limiting groove's spring. This scheme adopts new mechanical structure. The utility model has the advantages of it is following and effect: when the footboard was dug, the h