Brake bottom plate

The utility model relates to the technical field of automobile parts, and discloses a brake bottom plate which comprises a bottom plate shell, a connecting plate is fixedly connected to the upper side wall of the bottom plate shell, two fixing bolt holes are formed in the side wall of the connecting plate, an axle hole is formed in the side wall of the bottom plate shell, and a cam shaft opening is formed in the surface of the bottom plate shell. An annular cavity is formed in the bottom plate shell, a plurality of oil outlet holes are annularly formed in the side wall between the annular cavity and a cam shaft opening, an oil inlet cavity is formed in the lower side wall of the annular cavity, the lower end of the oil inlet cavity is covered with a storage cover, and the side wall of the storage cover communicates with an oil injection pipe. When the brake bottom plate works, the cam shaft and the bushing can be lubricated, abrasion of the cam shaft and the bushing is greatly relieved, and the service life o