Excavating working vehicle

Abstract

Abstract PURPOSE:To exactly stop an excavating working vehicle at a desired position by a method in which a control mechanism to automatically operate a flow regulating valve to a flow-reducing side when the excavating working device comes near to a set position while the excavating device is keeping a horizontal slewing action with respect to a target point. CONSTITUTION:An oscillating circuit 21 is automatically operated by a discriminating circuit 23 on the basis of information from a turning position sensor 16 for a slewing base 1, the first setter 17 to set a reference turning position with respect to the vehicle, the second setter 18 to set a target turning position with respect to the vehicle, an operation condition sensor 19 for a switch valve 10, and a timing setter 20 for beginning operation. When the base 1 comes near a set position, the flow regulating valve 15 is controlled by the circuit 21 and the amount of oil to be supplied to the oil-pressure motor 3 from the valve 10 is reduced. The slewing speed of the base 1 can thus be automatically reduced and the base 1 can be exactly stopped at a desired position.

Inventors

• 👤 Masahiro Tsutsumi
• 👤 堤　正博

Bibliographic Details