| 摘要 |
PROBLEM TO BE SOLVED: To firmly connect a hollow pipe for forming a sand pile and perform expansion and contraction work for its connection, separation, and storage easily, safely, securely, and automatically by remote operation in a short time. SOLUTION: This expansion and contraction device 10 for the hollow pipe for forming the sand pile for connecting or separating and storing the hollow pipe 100 for forming the sand pile is composed of a wedge mounting and dismounting pedestal 50 in which a wedge mounting and dismounting device 3 is arranged to correspond to a hole part of a flange part of the hollow pipe 100 for forming the sand pile, a connection device 20 of the hollow pipe for forming the sand pile composed of a holding pedestal 6 mounting the wedge mounting and dismounting pedestal 50 and holding the hollow pipe 100 for forming the sand pile and a moving pedestal 7 mounting and moving the holding pedestal 6, a moving rail 8 mounting the connection device 20 movably and its moving means, and a storage device 9 of the hollow pipe for forming the sand pile provided with a tower 91. COPYRIGHT: (C)2005,JPO&NCIPI
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