| 摘要 |
PROBLEM TO BE SOLVED: To provide a mounting structure of hydraulic piping to a boom, which reduces noises arising from the boom irrespective of an operation state of a working machine. SOLUTION: The boom 22 elevated vertically with a boom cylinder 14 is mounted to the machine body frame 13 provided with an operation room 20. The boom 22 has a hollow structure with a back plate 1, a body plate 2 and lateral side plates 3 welded together, and the boom includes a plurality of crossing members 12 jointed to the back plate 1, body plate 2 and lateral side plates 3 inside the hollow structure. A clamp 5 securing the hydraulic piping 4 to the boom 22 is set to the joint part between the crossing member 12 and the respective plates 1, 2, 3 or to its vicinity. COPYRIGHT: (C)2011,JPO&INPIT |
