Cylinder cover, hydraulic cylinder, and working machine

A cylinder cover to be mounted on a hydraulic cylinder and protect a cylinder rod of the hydraulic cylinder, the cylinder cover comprising:

• a cover body that includes a first end attached to a head side portion of the cylinder rod and moves together with the cylinder rod according to a telescopic movement of the hydraulic cylinder;
• and
• a guide portion to support the cover body such that the cover body is slidable along an extension direction of the cylinder rod, wherein
• the guide portion includes:
• a guide plate that is provided on an outer circumferential portion of a cylinder tube of the hydraulic cylinder so as to extend in a direction of tangent to an outer circumference of a cross section of the cylinder tube that is perpendicular to an extension direction of the cylinder tube;
• and
• a pair of end portions that are provided on both end portions of the guide plate in the direction of tangent,
• the cover body includes:
• first portions that face first side surfaces of the end portions that are located opposite to the cylinder tube;
• second portions that face end surfaces of the end portions in the direction of tangent;
• and
• third portions that face second side surfaces of the end portions that are close to the cylinder tube, and
• each of the end portions is made of a resin member and includes, on the end surface thereof, a first curved convex surface portion curved such as to bulge toward the second portion.

A working machine comprising:

• a machine body;
• and
• a working device mounted on the machine body, wherein
• the working device includes a hydraulic cylinder that drives the working device and a cylinder bracket that supports a first end portion of the hydraulic cylinder,
• the cylinder bracket includes:
• a pair of bracket side plates that stand away from each other in one direction and sandwich the first end portion therebetween;
• and
• a cover plate that covers a separation space between the bracket side plates, each of the bracket side plates includes a thinned portion;
• and
• the cover plate includes lid pieces that cover the respective thinned portions.