| 摘要 |
PROBLEM TO BE SOLVED: To provide a grout agent injection plug which enables a pressure tank to be attached to a plug body only by rotating the pressure tank a little bit, which can simplify the attaching operation of the pressure tank, and which can obtain strong attaching strength. SOLUTION: The grout agent injection plug 1 is constructed of a combination of the plug body 2 and the pressure tank 3. The plug body 2 is provided with an attaching base 5 on its one end side, and is provided with a check valve 6 at an injection channel 4 on the other end side. Then the pressure tank 3 attached at a halfway part of the plug body 2 performs pressure accumulation of the grout agent flowing from the injection channel 4. In order to attach the pressure tank 3 at the halfway part of the plug body 2, a connection tube 8 having a connection groove 16 is provided at the halfway part of the plug body 2. Then an insertion tube 12, which is inserted to the connection tube 8, is provided to the pressure tank 3. Then an engagement piece 17 is provided and projected on the outer surface of the insertion tube 12, and the engagement piece is engaged with the connection groove 16 at the time of engagement of the connection tube 8 with the insertion tube 12. Then the connection groove 16 is opened at the end of the connection tube 8, and is formed so that it is stretched from the opened end and inclined in the direction that the connection groove draws the engagement piece 17 with respect to the peripheral direction of the connection tube 8. COPYRIGHT: (C)2006,JPO&NCIPI
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