| 摘要 |
<p>An operating system of a hydraulic excavator for facilitating the changes in operation pattern. The operating system is constructed such that a plurality of levers (6, 7) mounted to control levers (1) and rotatable through desirable angles and a plurality of levers (8, 9) connected to a link mechanism (16) are provided, respectively, between a plurality of control levers (1) provided in the vicinity of the operator's seat (11) and the link mechanism (16) for transmitting the operations of these control levers (1) to a plurality of hydraulic control valves (17), and selective connection is made between these levers (6) to (9) by a plurality of connecting rods (10). Owing to this arrangement, when a control pattern is changed over from Company A mode to Company B mode, a desirable control pattern can be obtained only when connecting rods connecting between levers are removed, the levers on the control lever's side are rotated through predetermined angles, and these levers are reconnected to the levers of the link mechanism. Furthermore, a threaded joint (10b) is provided in the intermediate portion of a connecting rod (10) to divide the connecting rod (10) to vertical portions, and a connecting rod not used during pattern changing can be fixed by a clamp (15).</p> |
