Flameproof hand hoist

The explosion-proof hand hoist is made of high quality copper alloy, and has wide application scope. It involves oil, chemical industry, refining, gas production, oil transportation, mining operation and other inflammable and explosive gas sites. In operation, products will not produce mechanical sparks by friction and impact. They are not easy to detonate gas in flammable and explosive places, which can effectively prevent fire accidents and ensure state property and personal safety.

The working principle is rotated through the drag chain, the chain wheel, the friction disc, the ratchet wheel and the brake block (to be integrated into one body) to rotate together, the five teeth long axis rotating gear, the four tooth short shaft and the spline hole gear. As a result, the lifting sprocket on the spline hole gear drives the lifting chain and steadily increases the weight.