| 摘要 |
PURPOSE:To exactly grasp the excavating position of an oil-pressure shovel by a method in which the displacing amount of a front link mechanism is detected, the distance from a given reference point or any reference point to an excavating point is calculated from the detected signal of said link mechanism, and the results are displayed. CONSTITUTION:An arithmetic unit 8 and a displayer 9 are provided to an oil- pressure shovel body 1, and an angle detector (not illustrated) to detect boom angle alpha, arm angle beta, and bucket angle gamma is also provided to the rotary support points A, B, and C of a boom 2 and an arm 3 consisting a front link mechanism. Signals Ealpha, Ebeta, and Egamma, corresponding to each angle, are put from the angle detector into the arithmetic unit 8 where signals Ex and Eh corresponding to excavating positions are output and put in the displayer 9. In the displayer 9, the distance in the horizontal direction of the excavating point is displayed on 9a and the distance in the vertical direction is on 9b. The positions of excavating points can thus be always exactly grasped by operators. |
