The invention discloses a detection device for a load cable, and relates to the field of detection devices. The device comprises a nondestructive cable
detector, a cable and a power motor, the bottomend of the nondestructive cable
detector is welded to the top end of a control cabinet, the top end of the output shaft of the power motor is in key connection with a rotating wheel, the middle position of the output shaft of the power motor is in key connection with a driving
bevel gear, the top end of a supporting column is fixedly connected with a cleaning mechanism, the upper end and the lowerend of the rotating shaft are in key connection with driven bevel gears, the driven
bevel gear at the lower end of the rotating shaft is engaged with the driving
bevel gear, and the driven bevel gearat the upper end of the rotating shaft is engaged with the cleaning mechanism. The cleaning mechanism cleans residues on the cable before detection, the destructive cable
detector can detect the defect of the cable according to the change of the
magnetization reaction of a
magnetic field, and when the defect is detected, the position of the defect is marked by a marking mechanism, a warning songis emitted, and a worker is notified to process the defect, so the inspection speed is improved, and the device is easy to use.