Boom apparatus and concrete pump vehicle having same

Abstract

In one aspect of the invention, a boom apparatus includes at least a first boom, a second boom and a third boom sequentially connected to one another, wherein a root end of the first boom is connected to a turntable, some of the booms is a bent boom occupying at least two column spaces, and when the booms are in a folded state, the boom apparatus occupies at least three column spaces. The invention also provides a concrete pump vehicle having the boom apparatus.

What is claimed is: 
     
         1 . A boom apparatus, comprising:
 at least a first boom, a second boom and a third boom sequentially connected to one another,   wherein a root end of the first boom is connected to a turntable, some of the booms is a bent boom occupying at least two column spaces, and when the booms are in a folded state, the boom apparatus occupies at least three column spaces.   
     
     
         2 . The boom apparatus according to  claim 1 , wherein the first boom occupies a column space, and when the booms are in the folded state, the other columns of the boom apparatus are located on the same side of the first boom. 
     
     
         3 . The boom apparatus according to  claim 1 , wherein the first boom is a bent boom, bending directions of bent segments of the first boom are the same, and when the booms are in the folded state, the other columns of the boom apparatus are all located on the same side of a bending direction of the first boom. 
     
     
         4 . The boom apparatus according to  claim 1 , wherein the first boom is a bent boom, a root end straight boom segment of the first boom connected to the turntable occupies a column space, and when the booms are in the folded state, the other columns of the boom apparatus are located on two sides of a space occupied by the root end straight boom segment of the first boom. 
     
     
         5 . The boom apparatus according to  claim 4 , further comprising at least a fourth boom, wherein each of the third boom and the fourth boom is a bent boom, and when the booms are in the folded state, bending directions of bent segments of the first boom and the third boom are opposite to each other, the bending directions of bent segments of the first boom and the fourth boom are the same, and the first boom, the second boom, and the third boom are folded into an R-shape. 
     
     
         6 . The boom apparatus according to  claim 4 , further comprising at least a fourth boom and a fifth boom, wherein the second boom, the third boom, and the fourth boom are folded into an inverse-Z-shaped boom unit, and the third boom, the fourth boom ( 4 ), and the fifth boom are folded into an inverse-R-shape. 
     
     
         7 . The boom apparatus according to  claim 6 , further comprising at least a sixth boom, wherein the fourth boom, the fifth boom, and the sixth boom form a Z-shape. 
     
     
         8 . The boom apparatus according to  claim 6 , comprising at least a sixth boom, wherein the fourth boom, the fifth boom, and the sixth boom are folded into an R-shape. 
     
     
         9 . A concrete pump vehicle, comprising:
 a chassis; and   a boom apparatus disposed on the chassis, wherein the boom apparatus comprises:
 at least a first boom, a second boom and a third boom sequentially connected to one another, wherein a root end of the first boom is connected to a turntable, some of the booms is a bent boom occupying at least two column spaces, and when the booms are in a folded state, the boom apparatus occupies at least three column spaces. 
   
     
     
         10 . The concrete pump vehicle according to  claim 9 , wherein the first boom occupies a column space, and when the booms are in the folded state, the other columns of the boom apparatus are located on the same side of the first boom. 
     
     
         11 . The concrete pump vehicle according to  claim 9 , wherein the first boom is a bent boom, bending directions of bent segments of the first boom are the same, and when the booms are in the folded state, the other columns of the boom apparatus are all located on the same side of a bending direction of the first boom. 
     
     
         12 . The concrete pump vehicle according to  claim 9 , wherein the first boom is a bent boom, a root end straight boom segment of the first boom connected to the turntable occupies a column space, and when the booms are in the folded state, the other columns of the boom apparatus are located on two sides of a space occupied by the root end straight boom segment of the first boom. 
     
     
         13 . The concrete pump vehicle according to  claim 12 , wherein the boom apparatus further comprises at least a fourth boom, wherein each of the third boom and the fourth boom is a bent boom, and when the booms are in the folded state, bending directions of bent segments of the first boom and the third boom are opposite to each other, the bending directions of bent segments of the first boom and the fourth boom are the same, and the first boom, the second boom, and the third boom are folded into an R-shape. 
     
     
         14 . The concrete pump vehicle according to  claim 12 , wherein the boom apparatus further comprises at least a fourth boom and a fifth boom, wherein the second boom, the third boom, and the fourth boom ( 4 ) are folded into an inverse-Z-shaped boom unit, and the third boom, the fourth boom, and the fifth boom are folded into an inverse-R-shape. 
     
     
         15 . The concrete pump vehicle according to  claim 14 , wherein the boom apparatus further comprises at least a sixth boom, wherein the fourth boom, the fifth boom, and the sixth boom form a Z-shape. 
     
     
         16 . The concrete pump vehicle according to  claim 14 , wherein the boom apparatus further comprises at least a sixth boom, wherein the fourth boom, the fifth boom, and the sixth boom are folded into an R-shape.