Why does the crane have two hooks?
Floating crane is generally divided into fast and slow hook, hook. But the use of large tonnage crane hook is very small. Mainly on the use of small crane.Fast hook is generally single strand wire rope, lifting speed, high efficiency.Slow hook will be based on the weight of the lifting of the article, a lot of time need to return to the rope, so as to be able to lift the goods. Have seen the largest is the rate of 7-8, mainly to enhance the heavier goods
There are two hooks in the double beam crane is a large tonnage crane, a small tonnage hook, use can be selected according to the use of heavy quality, heavy quality is small small hook can improve the efficiency and energy saving.
Not all cranes are two hooks, you said the double hook crane are generally large tonnage, a main hook, a pair of hook, double hook crane can work at the same time with two hooks, keep lifting balance, also can use a single, small tonnage is small hook operation, save resources
