ADHESION PREVENTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a adhesion prevention device capable of preventing the fixation and growth of attachment to a bucket with a simple structure and providing safe and secure working environment by releasing workers from a risk manual operation for removing the attachment. SOLUTION: The adhesion prevention device includes: an air jet nozzle 11 for spraying and stopping compressed air toward an inner surface of a bucket 3c by opening and closing a solenoid valve 13a; a rotation disk 20 provided coaxially with a rotation shaft 3d of a sprocket 3b and having a plurality of detection vanes 21 that rotate along with the movement of the bucket 3c; a sensor 30 for detecting the approach of the detection vanes 21 that rotate by the rotation of the rotation disk 20; and a controller 40 for controlling the opening and closing of the solenoid valve 13a based on a detection signal detected by the sensor 30 and synchronizing the position of the bucket 3c with the timing of the spray of the compressed air. COPYRIGHT: (C)2010,JPO&INPIT