Automatic belt-scraper-adjusting device and conveyor belt cleaner having the same

A conveyor belt cleaner comprising:

• a scraper set comprising
• a belt scraper;
• and
• a pivot shaft connected to the belt scraper;
• at least one automatic belt-scraper-adjusting device disposed at an end of the pivot shaft and comprising
• a shell seat being hollow internally;
• a connecting component pivotably mounted at the shell seat and comprising
• a connecting portion being hollow along an axial direction of the connecting portion;
• the pivot shaft of the scraper set extending into the connecting portion and fixedly connected to the connecting portion;
• at least one force-applying assembly mounted inside the shell seat, connected to the connecting component, and applying a steady adjusting force to the connecting component;
• wherein the connecting component is rotated along a preparing direction before connected to the pivot shaft, and then is rotated along a direction opposite to the preparing direction under the adjusting force applied by the at least one force-applying assembly, thereby driving the pivot shaft of the scraper set to rotate along the direction opposite to the preparing direction, and
• wherein each one of the at least one force-applying assembly is a constant-force spring and comprises
• an elastic ribbon rolled up and comprising
• a center end fixed and mounted at the shell seat;
• and
• a force-applying end mounted at the connecting component.