The new chain transmission system developed by Tiandi Benniu features an innovatively researched and developed variable-pitch rectangular chain-sprocket meshing system and a bolt-free connected scraper assembly. It boasts advantages such as high load-bearing capacity, long wear life, compact structure, and convenient maintenance. Main performance parameters: Chain specifications (mm): 48×144/160; Breaking load ≥ 3,050 kN; The contact specific pressure between the flat ring and the sprocket has been reduced from 2,000 kN/mm² to 1,200 kN/mm²; The contact area between the standing ring and the middle plate has increased by 1.5 times; This product technology can be adapted to ultra-heavy-duty scraper conveyor equipment with a trough width range of (1,000–1,600) mm, enhancing equipment reliability and promoting the technological development of coal mining machinery equipment.