| 摘要 |
PURPOSE:To enable multipurpose transfer and conveyance, by providing openings on the tip part, a midway part and a sleeve pipe part of a boom pipe. CONSTITUTION:Openings 11-13 are provided on the upper side of the tip part 7 and a midway part 8 of a boom pie 6 provided with a built-in boom screw 5 and a connecting part 10 of a sleeve pipe 9 provided with a built-in vertical screw 4 with the boom pipe 6 respectively, each of which is provided with each of detachable and attachable cover lids 14-16 respectively. On the other hand, the upper side of the tip part 7 and the midway part 8 of the boom pipe 6 and the connecting part 10 of the upper end of the sleeve pipe 9 with the boom pipe 6 are provided with the openings 11-13 respectively, intake openings 30 and 30' conneting with the opening 11 of the tip part 7 of the boom pipe 6 or the opening 13 of the connecting part 10 of the upper end of the sleeve pipe 9 with the boom pipe 6 are provided, an opening 31 is provided on the tip and a connecting pipe 29 provided with a built-in screw 28 is provided. Multipurpose transfer and bringing out are enabled by doing as mentioned above. |
