Crane structure: crane operating agencies generally only four wheel drive and driven buy 35 tons truck crane, if a great weight, increase common approach from the wheel to reduce the wheel pressure. When the wheels than four, must be balanced hinged frame means that the crane load is evenly distributed on each wheel. Crane Development origin: history. 10 BC 35 tons truck crane in Guangdong, the Roman architect Victor Ruwais had its construction manual describes a lifting machinery. This machine has a mast, mast mounted pulley by guyed mast position 35 tons truck crane, winch to pull cable through pulleys to lift heavy loads. Some overweight machinery available two masts, constitute herringbone, the lift was a lateral move, but only slightly, operation is very difficult.