Cylinder cover flatness measuring and locking device and measuring equipment

The utility model provides a cylinder cover flatness measurement locking device and measurement equipment, relates to the technical field of measurement fixing devices, and solves the technical problem that the requirement of locking an injection molding type cylinder cover to simulate the assembly condition of the cylinder cover to measure the flatness cannot be met in the prior art. The locking device for measuring the flatness of the cylinder cover comprises a checking fixture plate with a hollow hole in the middle and a locking piece arranged on the checking fixture plate, the locking piece is movably arranged on the peripheral side of the hollow hole, and the locking piece can lock a flange edge of the cylinder cover on the checking fixture plate. According to the utility model, the flange edge of the cylinder cover is abutted against the gauge plate by arranging the locking sheet, so that the installation condition of the cylinder cover is simulated, and the subsequent flatness measurement of the inject