Patent ID: 8504251

Claim:
An interference prevention control device of a machine having a machine body and provided with a cab and a work equipment mounted on the machine body in such a manner that the cab and the work equipment are capable of moving independently of each other, the interference prevention control device comprising: a cab position sensor for detecting a position of the cab; a tool position sensor for detecting a position of a tool attached to the work equipment; a limiter configured to limit movement of a hydraulic actuator that serves to move the cab; a main pump fluidly coupled to the hydraulic actuator and configured to provide pressurized fluid to the hydraulic actuator to move the cab relative to the machine body; a pilot pump configured to provide pressurized pilot fluid for controlling the supply of pressurized fluid from the main pump to the hydraulic actuator; and a controller that serves to: determine a positional relationship between the tool and the cab based on the tool position detected by the tool position sensor as well as the cab position detected by the cab position sensor; and based on the positional relationship, control the movement of the hydraulic actuator of the cab by means of the limiter so as to prevent interference between the cab and the tool.