Little tips of overhead crane brake system:
When the lining is worn, more space between the brake shoe and the drum will be created. When the crane stops, it will push the brake shoe, making it close to the drum. When the gap becomes large enough, the adjusting rod will shake enough amplitude, so that the adjuster gear can move forward one tooth. The regulator is provided with a thread like a bolt, so that it can be loosened at a point when it is rotated, and extends to fill the gap. When the brake shoe is worn at a point, the regulator will move a little further, so that it always keeps the brake shoe close to the drum. Some auto regulators will start when using an emergency brake. If the emergency brake is not used for a long time, then the regulator may not be able to adjust.
