Patent ID: 6378653
Filing Date: 2002-04-30
Classification: B66F

Abstract:
In a boom lift vehicle comprising a vehicle equipped with a travel apparatus and capable of travel, a boom that is attached to said vehicle and is at least vertically tiltable and horizontally rotatable, and a work platform attached to the distal end of said boom; a travel and rotation control device for controlling the travel of said vehicle and/or the rotation of said boom, said control device comprising:travel command means for outputting commands for the travel of said vehicle: boom rotation command means for outputting commands for rotationally operating said boom; position detection means for detecting the position of said work platform with respect to said vehicle; control means for calculating the movement speed of said work platform at a position detected by said position detection means according to a travel command issued by at least one of said travel command means and a boom rotation command issued by said boom rotation command means, and controlling the travel of said vehicle and/or the rotation of said boom so that the movement speed of said work apparatus does not exceed a predetermine base speed; traveling speed calculation means for calculating the traveling speed of said vehicle according to a travel command issued by said travel command means; moving speed calculation means for calculating the moving speed of said platform relative to said vehicle according to a boom rotation command issued by said boom rotation command means; resultant moving speed calculation means for calculating the resultant moving speed of said platform at a position detected by said position detection means based on the traveling speed of said vehicle and the moving speed of said platform; and control means for controlling the travel of said vehicle and or the rotation of said boom so that the resultant moving speed does not exceed a predetermined base speed.