| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a concrete pump vehicle having a boom capable of inhibiting an inflection trouble of the boom due to the contact of auxiliary links with beams on the other sides resulting in breakage during the operation of the plurality of beams. <P>SOLUTION: A concrete pump vehicle V includes a boom 13 having at least two or more beams 131-134 connected to one another in an inflective manner, boom driving means 14 having at least hydraulic cylinders 142a-144a for inflecting the beams 131-134 with the telescopic motion of the hydraulic cylinders 142a-144a, and control means C for driving the boom driving means 14 on the basis of an operation signal from operation means R. It further includes an inclination sensor Se (detection means) for detecting the attitudes of the beams 131-134. The control means C determines a dangerous state when the third beam 133 is in such an extracting attitude as to apply a load in the direction of elongating the second inflecting cylinder 143a, on the basis of the detection result of the inclination sensor Se. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
