Guard axis board called tongue plate, comprising a tongue plate, characterized by the ends of the tongue plate is fixed points symmetrical to each other and with the chain fork tongue plate perpendicular inwardly disposed symmetrically in the middle of the two sub-chains fork a fork bolt, is provided with two telescopically on the conveyor machine head housing of the upper limit position of the fork pin sets respectively outer points chain fork. Both to meet the above-mentioned structure of the original design of a nursing unit, requiring half the chain, three block goods, but also has a simple structure, easy to install, easy handling, and also has easy maintenance, service, maintenance, and easy to update. 1, shortening the length of each run-down of coal, coal cleaning up floating head; 2, identify the cause of scratch cards, in addition to failure; 3, the pin abrasion strength is too low. Companies adhere to the "quality first, oriented" purposes, since its inception has accumulated a wealth of professional experience in production, the introduction of trained professional and technical personnel, with strong economic strength, sophisticated technology and equipment, advanced manufacturing technology , a sound management system, excellent after-sales service. Wide-domestic high-tech talent, high-quality transmission machinery products to meet the needs of users at home and abroad, by the wide range of user trust. The company has a sound quality assurance system and management. At present, these products are widely used in mining machinery, metallurgical, chemical, printing, pumps, fans, transport, etc., and exported to the Far East and Southeast Asia. The Company will cooperate in good faith and dedication to service and quality products with your road to success. We warmly welcome new and old customers to visit us!