DEVICE FOR INSERTING PIPE BODY INTO SHEATH PIPE USING BUOYANCY

Title:

DEVICE FOR INSERTING PIPE BODY INTO SHEATH PIPE USING BUOYANCY

Document Type and Number:

Japanese Patent JP2009198009

Kind Code:

A

Abstract:

To provide a simple device for inserting a pipe body with a spacer attached thereto, into a sheath pipe buried between shafts, by small insertion force.

A water cut-off part is arranged on both ends of the sheath pipe 3 buried between both shafts 1 and 2. When inserting the pipe body 4 by using buoyancy of liquid 5 stored in the sheath pipe 3, the water cut-off part composed of elastically deformable sealants A and B installed at an interval, is arranged on the sheath pipe opening end on the starting shaft 1 side, and a drain mechanism is arranged between the sealants A and B. A pipe body clamp 18 for gripping the pipe body 4 is fixed to a travel stand 17 traveling on a rail 16, and the rail 16 is fixed to the travel stand, and an opening reaction box 19 is connected via an expansion device 20, and is moved in a measuring shape by an expansion operation of the expansion device and a fixing and releasing operation of the reaction box, and the pipe body 4 is inserted into the sheath pipe 3.

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Inventors:

HAKODA TOSHIHIDE
KURASHINA MINORU

Application Number:

JP2009130680A

Publication Date:

September 03, 2009

Filing Date:

May 29, 2009

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