Patent ID: 8463512
Filing Date: 2013-06-11
Classification: E02F,G01S

Abstract:
1. A construction machine, comprising: a vehicle body; a lift frame vertically pivotably attached to the vehicle body; a work implement supported by a tip of the lift frame; a lift cylinder; an angling cylinder; a tilt cylinder; an angle obtaining part configured to obtain a blade lifting angle, a blade angling angle and a blade tilting angle based on a lift cylinder length of the lift cylinder, an angling cylinder length of the angling cylinder and a tilt cylinder length of the tilt cylinder; a GPS receiver fixed to the vehicle body, the GPS receiver configured to receive GPS data indicating a position of the GPS receiver; and a global position obtaining part configured to obtain a position of the work implement in a global coordinate system based on the GPS data, the blade lifting angle, the blade angling angle and the blade tilting angle, the GPS data being received by the GPS receiver, the blade lifting angle, the blade angling angle and the blade tilting angle being obtained by the angle obtaining part, the angle obtaining part storing a conversion table for matching a combination of the angling cylinder length and the tilt cylinder length with a combination of the blade angling angle and the blade tilting angle.