BOX-SHAPED BOOM SECTION AND BOX-SHAPED BOOM OF CONCRETE SPRAYER AND CONCRETE SPRAYER

摘要

Disclosed is a box-shaped boom section (30) for a concrete sprayer, the box-shaped boom section (30) having at least four side walls (31), wherein the cross section of the box-shaped boom section (30) is a regular polygon. Further disclosed are a box-shaped boom (20) comprising such a box-shaped boom section (30) for a concrete sprayer, and a concrete sprayer comprising such a box-shaped boom (20). By means of arranging the cross section of the box-shaped boom section (30) to be a regular polygon, the inner stress of the box-shaped boom (20) does not change greatly, so that the service life of the box-shaped boom (20) can be prolonged.