| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a placing cycle of concrete totally is long in a conventional concrete placing method wherein the position of a bucket truck is not pinpointed and much time is spent on derricking a crane boom for adjusting thereto. SOLUTION: The bucket truck positioning device corresponding to a crane calculates detection results of a tip end position of a crane boom (2), a boom angle, a slewing motion angle, and the delivered amount of wire of a crane, and the calculation results are transmitted to a bucket truck position control device through a wireless installation (8) to position the bucket truck in the bucket ejection position by the crane boom. The tip end position detection means of the crane boom comprises a light wave mirror or GPS (10), a receiving antenna for light wave or GPS (11), and a two-way receiving antenna (12) provided at the tip end of the crane boom, a light wave mirror or GPS (14) and a transmitting antenna (15) for light wave or GPS installed in a high place. COPYRIGHT: (C)2003,JPO
|
