Deviation from cord advance detection device null

摘要

PROBLEM TO BE SOLVED: To enable irregular dislocation of a cable way off a cable receiving unit to be detected by axially supporting a detection wheel whose peripheral edge part makes contact with a cable way and detecting the deviation of moving position of the cable way by a cable receiving unit in relation to the cable receiving unit by means of the detection wheel. ;SOLUTION: Since a vertical line passing the center of cable receiving wheels 35... and the axial core of a beam shaft 14 of an irregular displacement prior detector 1 are displaced in the horizontal direction in a front view, a detection wheel 20 makes its rotation in such a way that a peripheral edge part 20a makes contact with a cable way 100 slantly from upside to be placed in its inclined condition. Meanwhile, when a cable way 100 is deviated to an abnormal position and very nearly dislocated off a cable receiving wheels 35..., the detection wheel 20, a detection beam 19 and a chip bar 22 turn around the beam shaft 14 so as to actuate a limit switch 24. As the result, a main electric motor which drives cable way 100 stops to operate an emergency brake so as to automatically stop the operation of carriers.;COPYRIGHT: (C)1997,JPO