3.4.4.1.5检查相邻的两个刮板之间圆环链对的磨损情况，圆环链对之

3.4.4.1.5 Check the wear condition of the ring chain pair between two adjacent scrapers. The length deviation of the ring chain pair should not exceed 1mm/m, otherwise the pair will be replaced; the chain ring diameter is worn to 80 ∽It should be replaced when it is below 85%. <br>When replacing, first remove the chain buckle bolt, then gently knock out the pin, take out the chain, and replace the chain in the reverse order when replacing the new chain. <br>3.4.4.1.6 Check each scraper, especially whether the bolt connection between the joint seat and the scraper is broken or loose. The scraper must not be bent or deformed. Replace the damaged or deformed scraper.

3.4. 4.1. 5 check the wear of the ring chain pair between two adjacent scrapers. The length deviation of the ring chain pair shall not exceed 1mm / m, otherwise it shall be replaced in pairs; The chain link shall be replaced when its diameter is worn below 80 ∽ 85%.<br>When replacing, first remove the chain buckle bolt, then gently knock out the pin and take out the chain. When replacing a new chain, replace it in the reverse order.<br>3.4. 4.1. 6 check whether each scraper, especially the bolt connection between the joint seat and the scraper, is broken and loose. The scraper shall not be bent and deformed. Replace the damaged and deformed scraper.

3.4.4.1.5 Check the abrasion of circular chain pairs between two adjacent scrapers, and the length deviation of circular chain pairs should not exceed 1mm/m, otherwise, replace them in pairs; When the diameter of the chain ring is worn below 80∽85%, it should be replaced. When replacing, first remove the link bolt, then gently knock out the pin, take out the chain, and replace the new chain in the reverse order. 3.4.4.1.6 Check each scraper, especially whether the bolt connection between the joint seat and scraper is broken or loose, and the scraper shall not be bent and deformed, and replace the damaged scraper.