Protective Device for Cylinder

Abstract

A conventional solid protection device disposed on an exposed side of a cylinder for actuating a working device had a possibility of being permanently deformed by contacting an obstacle so as to be prevented from sliding properly corresponding to the telescopic movement of the hydraulic cylinder. An object of the invention is to provide a hardly deformable protection device. To protect an exposed side of a cylinder for a working device, a protection device 30 includes a guard member 32 and a slide guide 31 into which guard member 32 is telescopically fitted. Slide guide 31 is attached to a cylinder tube 9a, and a tip of guard member 32 is attached to a tip of piston rod 9b. Guard member 32 is a flat plate made of spring steel. A width of guard member 32 is larger than a diameter of the piston rod. Notches 32a are provided on lateral opposite sides of a basic side end of guard member 32. Sliders 33 are fitted to respective notches 32a. The top of guard member 32 is bent into a roll-shape so as to serve as a pivotal portion.

Dependencies are inferred from the claim text.