| 摘要 |
PROBLEM TO BE SOLVED: To provide a riprap throw-in management system improving the working rate of a sand carrier with a grab bucket by quickly mounting equipment required to throw riprap within a predetermined range of the water bottom, to the sand carrier with the grab bucket. SOLUTION: A GPS antenna 2 is fixed to an antenna mounting member 3 having a base part that connects in a foldable manner a plurality of rigid plates with magnets provided on the surfaces, and the antenna mounting member 3 is fixed to a boom top part of a crane by the magnetic force of these magnets. A processor mounting member 12 with a data processor 11 fixed thereto is fixed close to the top part of the boom by a fastening belt. Position data successively transmitted from the antenna 2 are transmitted to the data processor 11 through a communication cable 11c and transmitted to a control device 15 from the data processor 11 by radio communication, and plane position information of the grab bucket 20 computed based on the position data is displayed on a monitor 17. COPYRIGHT: (C)2011,JPO&INPIT |
