HYDRAULIC PIPE FOR HYDRAULIC SHOVEL

摘要

PROBLEM TO BE SOLVED: To prevent a flexible hose provided at a location where a hydraulic pipe to a hydraulic cylinder fitted to an arm passes through a boom/arm connecting mechanism from being largely expanded outward and damaged. SOLUTION: A hydraulic source side pipe 31 is extended to the position of a bent plate 23 forming the boom/arm connecting mechanism 21 along the back face of a boom main body 20, and a coupling member 32 is connected to it. A cylinder side pipe 33 extracted from the cylinder tube of a bucket cylinder 17 is connected to a coupling member 34 at a position directly after passing through the base end section of the arm 12. The coupling member 32 of the hydraulic source side pipe 31 and the coupling member 34 of the cylinder side pipe 33 are connected by the flexible hose 35, and the flexible hose 35 passes through the fitting position of a spindle 26 between the right and left journal sections 25b of a bearing block 25.