SLOPE EXCAVATION CONTROLLER OF HYDRAULIC SHOVEL, TARGET SLOPE SETTING DEVICE AND SLOPE EXCAVATION FORMING METHOD

摘要

An external reference (80) is set in a horizontal direction along the development direction of a target slope and the vertical distance hry and horizontal distance hrx from the external reference to a reference point on the target slope and the angle υr of the target slope are set by an operation device (7). If a front reference (70) provided at the tip of a bucket is agreed with the external reference and an external reference setting switch (71) is pushed, a control unit (9) calculates the vertical distance hfy and horizontal distance hfx from the center O of a vehicle body to the external reference. By using those values as correction values, the vertical distance hsy and horizontal distance hsx from the center O of the vehicle body to the target slope are calculated and the target slope whose reference is the vehicle body 1B is set in accordance with these values and the angle inputted by a setting device and the region limiting excavation control is carried out accordingly. With this constitution, even if the position relation between the vehicle body and an existing slope is changed by the horizontal shift of the vehicle body, the slope can be excavated without difference in level.