CRANE ROPE SWING ANGLE MEASURING METHOD AND CRANE

摘要

PROBLEM TO BE SOLVED: To establish a method of acknowledging the swinging angle of a rope accurately by eliminating influence of the revolution and twist of a crane hanging tool. ;SOLUTION: As the origin for swinging angle, the center point of the oversurface of a hanging tool is calculated from the two pieces of swing angle sensing data given by two swing angle sensors composed of two units of swing angle sensors 29 attached onto a sideways traveling dolly 1 of a crane and two corresponding targets 61 for sensing the swing angle installed on the hanging tool 51 through a rope 5, and thereupon an accurate swing angle 8 of rope 5 is acknowledged which has got rid of the revolving or twisting element of the hanging tool 51.;COPYRIGHT: (C)1999,JPO