The main explosion -proof hand stubbura and ring chain hand -made pour gourds are the main materials used. Explosion -proof hand stubburies: use aluminum bronze and bronze as rough, and riot handle gourd shells are made of H62 copper alloy material. The main parts of the ring chain handle gourd are made of alloy steel materials. The chain uses 800MPa high -strength lifting chain. The material is generally 20 manganese two. Hand -streaming is a chain with medium frequency quenching, low wear, and corrosion of corrosion; high -strength hooks, generally alloy steel, hook hook design ensure slow rise to prevent overload; : Start the rotation of the bracelet chain and the bracelet, the rotation of the spine wheel, the brake seat (being pressed into one), and the five -tooth long shaft rotate the gear, the four -tooth short shaft and the flower pores. As a result, the lifting chain wheel installed on the gear gear on the flower pores drives the chain and improves heavy objects steadily. Explosion -proof hand pulling gourd is a simple and convenient manual heavy machinery. Explosion -proof hand pulling gourd can be used to form a manual lifting car car with explosion -proof manual monorail. In the dangerous environment of potential fires and explosions such as stations, oil depot, gas collection, chemical industry, military industry, electricity, mines, electronics, railways, and explosions, the products of the products in the operation will not produce mechanical sparks, effectively prevent fire accidents, ensure the country Property and personal safety. It is also an indispensable special tool for mechanical manufacturing and mechanical maintenance.