BOOM DEVICE AND CONCRETE PUMP TRUCK

摘要

A boom device comprises multiple booms hinge-connected in sequence. A first boom is hinge-connected to a turntable of pumping machinery. The turntable is located in the middle of the pumping machinery. The first boom is placed upside down. A second boom is hinge-connected to the first boom and folded above the first boom. The second boom, the following booms, and the last boom all run through the body of the pumping machinery. The turntable is located in the middle of the pumping machinery, and the first boom is placed upside down and extends towards the tail or the cab of the pumping machinery, so that the second boom, the following booms, and the last boom can run through the body of the whole pumping machinery, that is, run from the cab of the pumping machinery along the length direction of the pumping machinery to the tail thereof, so as to realize arrangement of an ultra-long boom, and further increase the unfolded length of the whole boom device, thereby increasing the material distribution range thereof. A concrete pump truck comprising the boom device.