发明名称 |
TIP CAP OF CASING FOR GROUND EXCAVATION, AND CASING FOR GROUND EXCAVATION WITH TIP CAP |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tip cap for a casing for ground excavation which can be certainly and easily attached and detached to the casing, and the casing for ground excavation with the tip cap. <P>SOLUTION: Sediment of the ground is prevented from getting into the inside of a casing 2 in ground excavation by sealing the tip opening of the casing 2 by a body part 8 constituting a tip cap 7. An engaging part 9 which can be stored inside the outer peripheral surface of the body part 8 is engaged into an engaging hole 3 formed in the casing 2 to fix the tip cap 7 to the inside of the tip of the casing 2 by projecting the engaging part 9 outside the outer peripheral surface of the body part 8. The engaging part 9 is moved inside the outer peripheral surface of the body part 8 to be stored only by pressing a pressing shaft 10a of a pressing part 10 with an outer tube 13 inserted into the casing 2, and fixation of the tip cap 7 fixed to the inside of the tip of the casing 2 is released. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2013124446(A) |
申请公布日期 |
2013.06.24 |
申请号 |
JP20110272066 |
申请日期 |
2011.12.13 |
申请人 |
TOA HARBOR WORKS CO LTD |
发明人 |
ONO YASUTOSHI;SATO KOJI;IZUMI SHINYA;NAGASHIMA YOSUKE |
分类号 |
E21B10/62;E02D3/12;E21B7/20 |
主分类号 |
E21B10/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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