Protection device of electric cylinder

The utility model relates to the technical field of electric cylinders, in particular to an electric cylinder protection device which comprises a base, a machine shell is fixedly installed at the right end of the top of the base, a servo motor is fixedly installed at the bottom of an inner cavity of the machine shell, and a fan is fixedly installed at the top of the inner cavity of the machine shell. Through the arrangement of the base, the machine shell, the servo motor, the fan, the through opening, the heat dissipation fins, the heat conduction wire set, the first through hole, the protection cover, the rubber block, the second through hole, the cylinder body, the spring and the protection plate, the problems that an existing protection device of the electric cylinder is poor in protection, and a traditional protection device is only provided with a layer of shell on the outer side and does not have a heat dissipation structure are solved. And meanwhile, the problem that due to thefact that the external ca