BOOM OF CONCRETE PUMP TRUCK AND CONCRETE PUMP TRUCK

摘要

A boom of a concrete pump truck and a concrete pump truck having the boom. The boom has a folded state and an unfolded state and comprises seven boom sections (1 to 7) hinged in sequence. When the boom is in the folded state the seven boom sections (1 to 7) are basically arranged into five mutually staggered straight lines and at least the last two boom sections (6 7) are on the same straight line. Due to such configuration the overall size of the boom sections can be greatly reduced and the requirements of the road running condition can be easily met. In addition when the boom is in the folded state at least last two boom sections (6 7) are on the same straight line; so that the flexibility and the operability of a boom fabric can be greatly improved.