Explosion-proof chain hoists classification

Explosion-proof electric  lift hoist  lifting equipment is not the only, and explosion-proof chain hoists, the same product in the job it is friction between the impact will not occur mechanical sparks to effectively prevent fire accidents, ensure that the national wealth and personal safety, but also machinery and mechanical maintenance of essential special tools.


Explosion-proof hoist and hoist the main difference is that ordinary proof chain hoists material is aluminum bronze and beryllium as the blank, chain hoists shell is also used in H62 copper alloy materials. Why use this information as proof chain hoists raw materials, mainly bronze alloy, aluminum bronze alloy does not occur when impact or friction sparks, it is very suitable for the manufacture of flammable, explosive, corrosive place under magnetic and safe to use. Mainly alloy containing 30% oxygen or 6.5-10% methane empty oxygen withstand 561LJ impact energy, the impact of 20 magnetic, neither of sparks and burning.
Explosion-proof grade is proof chain block s level is d Ⅱ AT2 to d Ⅱ AT4, d represents flameproof; II on behalf of Class II proof that Plant Explosion. C stands for C-level hazardous areas, that is, for the most dangerous region, T4 temperature class representatives, from T1-T6, T6 is to achieve the highest.
The force of friction parts chain hoists including chain hoists lifting round form, siding, bracelet wheel, hooks, gears, gear shafts are made ​​of aluminum bronze and bronze alloy made ​​of data, proof chain hoists can be widely applied the petroleum, petrochemical, gas stations,hoist and trolley oil depots, gas, chemical, military, power, mining, electronics, railways, and other potential fire and explosion hazard environments.