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1. 发明专利

JPH06299784A CURVE DRIVING METHOD AND DRIVING PIPE THEREFOR 失效
公开(公告)号：JPH06299784A
公开(公告)日：1994-10-25
申请号：JP10761593
申请日：1993-04-10
申请人： NAKAGAWA FUME KAN KOGYO KK
发明人： HISAIE HIKARI , HATTORI KEIKO
IPC分类号： E21D9/06 , E21D9/093
摘要： PURPOSE:To obtain a high cut-off effect and earth incursion preventing effect at bending sections of the front and rear driving pipes in the case corner sections of a tunnel are driven and excavated by using the driving pipes. CONSTITUTION:Driving pipes 20 and 20' driven in the ground with the driving pipe 20 side as the front are such that the front end of a steel pipe collar 30 is fixed to the rear of the front driving pipe 20. A rubber cut-off ring 40 is fitted to the peripheral surface of the front end of the rear driving pipe 20'. The rear end of the collar 30 is fitted to the peripheral surface side of the front end of the rear driving pipe 20', and the cut-off ring 40 is contaced with the circumferential surface of the same collar 30. The ends of the driving pipes 20 and 20' are connected to each other through hinges 50. The turning center 100 bending both driving pipes 20 and 20' is set around the center of a position fitting the cut-off ring 40 in the end of the rear driving pipe 20' by the hinges 50.

2. 发明专利

JPH11159674A FLEXIBLE JOINT FOR EARTHQUAKE RESISTANT HUME PIPE 失效
公开(公告)号：JPH11159674A
公开(公告)日：1999-06-15
申请号：JP34058097
申请日：1997-11-26
申请人： NAKAGAWA FUME KAN KOGYO KK , SEIBU POLYMER CORP
发明人： HATTORI KEIKO , OZAWA TADATOSHI , SASAKI KIMIHIKO , KATAOKA SHINSUKE
IPC分类号： F16L27/10
摘要： PROBLEM TO BE SOLVED: To adapt it to the connection of a wide joint width by arranging an annular reinforcing member in an axial directional central part by forming anchor parts embedded in Hume pipes in axial directional both end parts in a joint composed of a rubber/synthetic resin to connect connecting end parts so as to wrap them from the outside. SOLUTION: A joint 1 is formed in a cylindrical shape composed of a flexible material such as a rubber/synthetic resin to connect connecting end parts 2a and 2a' of two Hume pipes 2 and 2' connected at prescribed intervals so as to wrap them from the outside. Two-strip annular anchor parts 4 and 5 embedded in the connecting end parts 2a and 2a' of the Hume pipes are respectively formed in axial directional both end parts 3. The respective anchor parts 4 and 5 extend inside in the radial direction from an inner peripheral surface 1a of the cylindrical joint 1, and form a gradient surface so that the axial directional width gradually increases inward. An annular reinforcing member 11 is arranged in a valley part 9 of the joint 1 before molding the Hume pipes 2 and 2', and concrete is filled by using centrifugal force after being set in a form in a state of fixing a protective cover 13 to the joint 1.

3. 发明专利

JPH0932471A PROPULSION PIPE FOR PROPULSION ALONG CURVE 失效
公开(公告)号：JPH0932471A
公开(公告)日：1997-02-04
申请号：JP20841995
申请日：1995-07-24
申请人： NAKAGAWA FUME KAN KOGYO KK
发明人： HATTORI KEIKO
IPC分类号： E21D9/06
摘要： PROBLEM TO BE SOLVED: To prevent the compression destruction of a cushion material and to transmit a propelling force precisely to a propulsion pipe ahead by eliminating the possibility of compressive stresses concentrating on the cushion material at the curved part of a propulsion pipe for propulsion along curves. SOLUTION: This propulsion pipe for propulsion along curves has a plurality of pipe bodies 11a, 11b longitudinally butted together in such a way as to be free to be curved, and has cushion members 18, 19, 20 inserted between the butted ends of the pipe bodies 11a, 11b while being opposite to the radial direction and capable of compressive deformation. The cushion members 18, 19, 20 get thicker toward both sides of the bending shaft of each pipe body 11a, 11b. The cushion members 18, 19, 20 are made of, e.g. a plurality of circular segment-like members, which are laid one on another to vary their thicknesses.

4. 发明专利

JPH01137029A METHOD OF EXECUTING CONCRETE WATER CHANNEL 失效
公开(公告)号：JPH01137029A
公开(公告)日：1989-05-30
申请号：JP29462987
申请日：1987-11-21
申请人： NAKAGAWA FUME KAN KOGYO KK
发明人： HATTORI KEIKO
IPC分类号： E03F3/06 , E02B9/06 , E02F5/10 , F16L1/038 , F16L9/08
摘要： PURPOSE: To reduce concrete thickness and to sufficiently withstand soil pressure by burying a hollow concrete structure having a nearly square cross sectional outer shape and a circular inner shape in the ground so that one of diagonal lines of the square is made vertical. CONSTITUTION: When a concrete structure 6 having a square cross sectional outer shape and a circular inner shape around the intersection of the square is buried to construct a concrete channel, one of diagonal lines of the cross sectional outer shape is made nearly vertical for installation. When the structure 6 is installed, pedestals 10 are installed at proper positions to support the structure 6, the soil pressure applied to the structure 6 is effectively received, the occurrence of bending moment is prevented, and the whole soil pressure is received by uniform compressive stress. The concrete channel is miniaturized, execution is simplified, and the structure can be strengthened.

5. 发明专利

JPS6470174A COATING METHOD FOR INSIDE SURFACE OF TUBULAR BODY 失效
公开(公告)号：JPS6470174A
公开(公告)日：1989-03-15
申请号：JP22728987
申请日：1987-09-10
申请人： MITSUI PETROCHEMICAL IND , NAKAGAWA FUME KAN KOGYO KK
发明人： ARITA HIROYUKI , WATANABE YASUO , HASEGAWA KIYOSHI , KOGA MASANORI , HATTORI KEIKO
IPC分类号： B05D7/22 , B05D7/14 , B05D7/24
摘要： PURPOSE:To facilitate a coating operation and thick coating by coating a compsn. prepd. by mixing aggregate adjusted in a grain size distribution to a specific acrylic reactive resin on the inside surface of a rotating tubular body and curing the resin under rotation. CONSTITUTION:The compsn. having a self-leveling property is prepd. by mixing the aggregate adjusted in the grain size distribution with the acrylic reactive resin essentially consisting of at least one kind of monomer component selected from (meth)acrylic acid and the ester thereof and a polymer component which dissolves or swells in the monomer component. While the tubular body is rotated around its axis, the above-mentioned compsn. is coated on the inside surface of the pipe and is cured under rotation, by which the inside surface of the tubular body is coated. The coating is preferably executed while oscillations are applied to the tubular body together with the rotation. The aggregate having >=2 peaks in the grain size distribution is more preferable.

6. 发明专利

JPH07109887A JACKING EXCAVATION METHOD AND JACKING TUBE 失效
公开(公告)号：JPH07109887A
公开(公告)日：1995-04-25
申请号：JP27896193
申请日：1993-10-12
申请人： NAKAGAWA FUME KAN KOGYO KK
发明人： HATTORI KEIKO
IPC分类号： E21D9/06
摘要： PURPOSE:To advance at a curve having a smaller radius of curvature while a jacking tube having the ordinary length is used by compressing one of the upper and lower joint materials having high hardness, folding tubes, and folding the jacking tube at several positions. CONSTITUTION:An elastic cylinder 13 is coupled over the outer periphery of end sections of tubes 11a, 11b butted with end faces via joint materials 14, 15. The tubes 11a, 11b are integrated and fixed, and the release of the elastic cylinder 13 from the tubes 11a, 11b is prevented. The elastic cylinder 13 pinches the outer periphery portions of the joint materials 14, 15 in the groove of the inner periphery center section, and grooves are formed on the outer periphery to facilitate the deformation of the center section and both side sections of the elastic cylinder 13 in the width direction. Holes are formed at both end sections. When the curve portion is advanced, one of the joint materials 15 on both sides is compressed and the tubes 11a, 11b are folded with the upper and lower joint materials 14 having high hardness are folded. A jacking tube is folded at several positions as a whole, and the advance can be performed at a curve portion.

7. 发明专利

JPH02261992A CONCRETE TUBING MADE THROUGH CENTRIFUGAL SHAPING PROCESS 失效
公开(公告)号：JPH02261992A
公开(公告)日：1990-10-24
申请号：JP8095389
申请日：1989-03-31
申请人： NAKAGAWA FUME KAN KOGYO KK
发明人： HATTORI KEIKO
IPC分类号： F16L9/08 , B28B21/30
摘要： PURPOSE:To make uniform the bending moment at the top and the bottom of a concrete pipe when it is buried, by giving the top a different profile from the bottom, laying the centers of gravity of the top and bottom on a straight line passing the center axis, and establishing a specific relationship between the weight at each center of gravity and its distance from the center axis. CONSTITUTION:The wall thickness T1 of a concrete pipe at its top 2 is made greater than that T3 at the bottom 3, and the width (b) of the outer bottom surface 5 is made greater than that (a) of the top surface 4. If the slopes 6 on both sides of the top 2 is constructed symmetrical to the left and right, the soil pressure applied to the top 2 is dispersed by them 6, and also the reactive force to the bottom 3 is dispersed over the wide bottom surface to ensure that the bending moment generated at the top 2 and bottom 3 is made uniform. Therein the centers of gravity passing the top 2 and bottom 3 shall lie on a straight line passing perpendicularly the center axis of the pipe 1, and such a relationship as G1=r1+G2r1 is established, where G1 and G2 are weights at the top/bottom center of gravity, respectively, and r1 and r2 are their distance from the center axis, respectively. This generates equilibrium of the dynamic balance when rotating, which enables centrifugal shaping without involving vibrations.

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