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1. 发明专利

JP2002161697A JOINT STRUCTURE OF SEGMENT 失效
公开(公告)号：JP2002161697A
公开(公告)日：2002-06-04
申请号：JP2000357559
申请日：2000-11-24
申请人： NISHIMATSU CONSTR CO LTD , NIPPON KOKAN LIGHT STEEL KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KOBAYASHI MASANORI , WATANABE TORU , MITO KENJI , ARAI NORIYUKI , OE IKUO , NOMOTO MASAAKI , NAGAOKA SHOGO , HASEGAWA HOZUMI , SAKATA KAZUYA , NAKAJIMA MASAMI
IPC分类号： E21D11/04
摘要： PROBLEM TO BE SOLVED: To provide a joint structure of segments capable of being inserted even if the axial enters of male and female type joint members are slightly slipped each other and eliminating ricketiness after the insertion. SOLUTION: The male type joint member 2 embedded in an entrance side of the segment 1B to be built up stores a connecting axis body 4 having a plurality of grooves 5 on the circumference of the front end of the entrance side in a male joint body 3 in the direction of an axial diameter with a clearance in a freely movable manner and in an anti-slip shape. The female type joint member 14 embedded in a face side of the segment 1A built-up in advance bores a receiving hole 18 for receiving the connecting axis body 4 in a female joint body 15, a taper section 20 narrowed outward is formed inside of the receiving hole 18, an expansible diameter deformable lock ring 16 fitted into the grooves 5 of the connecting axis body 4 and an elastic deformable backup ring 17 pushing the lock ring against the taper section 20 are stored in the inner part deeper than the taper section 20 in the receiving hole 18.

2. 发明专利

JP2002161698A JOINT STRUCTURE OF SEGMENT 失效
公开(公告)号：JP2002161698A
公开(公告)日：2002-06-04
申请号：JP2000357560
申请日：2000-11-24
申请人： NISHIMATSU CONSTR CO LTD , NIPPON KOKAN LIGHT STEEL KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KOBAYASHI MASANORI , WATANABE TORU , MITO KENJI , ARAI NORIYUKI , OE IKUO , NOMOTO MASAAKI , NAGAOKA SHOGO , HASEGAWA HOZUMI , SAKATA KAZUYA , NAKAJIMA MASAMI
IPC分类号： E21D11/04
摘要： PROBLEM TO BE SOLVED: To provide a joint structure of segments capable of being inserted even if the axial centers of male and female type joint members are slightly slipped each other and eliminating ricketiness after the insertion. SOLUTION: The male type joint member 2 embedded in an entrance side of the segment 1B to be built up integrally projects a connecting axis body 4 having a plurality of grooves 5 on the circumference of the front end of an entrance side to a male joint body 3. The female type joint member 14 embedded in a face side of the segment 1A built up in advance bores a receiving hole 18 for receiving the connecting axis body 4 in a female joint body 15, and a taper section 20 narrowed outward is formed inside of the receiving hole 18. An inner race 13 formed in the shape of a conic cylinder having the same gradient as that of the taper section is fitted into the inside of the taper section 20 in a slidable manner in the direction of the axis and, at the same time, the expansible diameter formable lock ring 16 fitted into the grooves 5 of the connecting axis body 4 and the elastic formable backup ring 17 pushing the lock ring 16 against the inner race 13 are stored in the inner part deeper than the taper section.

3. 发明专利

JP2003090197A SEGMENT JOINT STRUCTURE 审中-公开
公开(公告)号：JP2003090197A
公开(公告)日：2003-03-28
申请号：JP2001282029
申请日：2001-09-17
申请人： NISHIMATSU CONSTR CO LTD , NIPPON KOKAN LIGHT STEEL KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KOBAYASHI MASANORI , WATANABE TORU , ARAI NORIYUKI , NOMOTO MASAAKI , MITO KENJI , YAMAUCHI SATORU , OE IKUO , NAGAOKA SHOGO , IIZUKA YOSHINOBU , HASEGAWA HOZUMI , SAKATA KAZUYA , NAKAJIMA MASAMI
IPC分类号： E21D11/04 , E21D11/08 , F16B7/00
摘要： PROBLEM TO BE SOLVED: To provide a segment joint structure capable of easily connecting mutual segments, and capable of reducing a burden to the segments when tensile force acts between the segments after the connection. SOLUTION: A male joint member 2 and a female joint member 8 are embedded in mutual end parts of the connecting segments 1A and 1B. These male- female joint members 2 and 8 are formed so as to obtain a strong connecting state only by inserting the male joint member 2 into the female joint member 8 by using a lock ring 11 and a backup ring 12. A connecting shaft body 4 being a projecting member of the male joint member 2 is housed in a male joint body 3 so as to be movable in the shaft direction even after connecting the male-female joint members 2 and 8. A spring washer 6 is arranged for resisting the tensile force by being deformed when the tensile force acts between the male-female joint members 2 and 8.

4. 发明专利

JPH10245856A REINFORCING BAR CONNECTION DEVICE FOR STEEL PIPE PILE 失效
公开(公告)号：JPH10245856A
公开(公告)日：1998-09-14
申请号：JP5336997
申请日：1997-03-07
申请人： TOOTEC KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KIKUCHI SADATOSHI , BANDO KATSUHIKO , NAKAJIMA MASAMI , NAGAYAMA SEIICHI
IPC分类号： E02D5/28 , E02D27/12
摘要： PROBLEM TO BE SOLVED: To connect various kinds of reinforcing bars to the outer periphery of the head part of a steel pipe pile by employing a system for sandwiching the lower end of the reinforcing bar by the cooperation of an attaching member and the push one part of a cover member. SOLUTION: A connection device 1 is provided with a flat plate-like attaching member 2 curved by being met to the radius of curvature of the outer peripheral face of the head part 110 of a steel pipe pile 100 and a cover member 3. The cover member 3 is arranged in the form of being overlapped on the attaching member 2 so that the bolt insertion hole 33 of the flange part 32 is overlapped on the bolt insertion hole 21 of the attaching member 2. When a nut 5 is screwed and tightened from the inside of the pile 100 on a bolt 4 inserted in three bolt insertion holes 33, 21, 12 from the outside, at the time tightening force is applied to a push one part 31, and the lower end 91 of a reinforcing bar 9 previously existing between the push one part 31 and the attaching member 2 is sandwiched by cooperation of the attaching member 2 and the push one part 31.

5. 发明专利

JP2000166385A ENCLOSURE 失效
公开(公告)号：JP2000166385A
公开(公告)日：2000-06-20
申请号：JP34670198
申请日：1998-12-07
申请人： TOOTEC KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KIKUCHI SADATOSHI , BANDO KATSUHIKO , NAKAJIMA MASAMI , NAGAYAMA SEIICHI
IPC分类号： A01G9/28 , E04H17/16 , A01G1/08
摘要： PROBLEM TO BE SOLVED: To provide an enclosure capable of readily and rapidly forming a prescribed polygonal shape or other shapes by connecting them by installing a specific hinge element in a body. SOLUTION: This enclosure has an enclosure body 1, and a pair of hinge elements 2, 3 having shapes capable of engaging with each other in the state in which the enclosure bodies are arranged in the same height, and open polygonal hole parts 21, 31 having the same shape and the same size. The pair of the hinge parts is installed so as to be separated to one end part and the other end part of the enclosure body 1 in the width direction. Preferably, the enclosure has the enclosure body 1, the pair of the hinge elements 2, 3, and a polygonal shaft capable of being freely inserted in and taken out from the open hole parts 21, 31 of the hinge elements 2, 3, and engaged with the corner parts of the open hole parts 21, 31 so as not to be relatively rotated.

6. 发明专利

JPH10245855A REINFORCING CONNECTION DEVICE FOR STEEL PIPE PILE 失效
公开(公告)号：JPH10245855A
公开(公告)日：1998-09-14
申请号：JP5336897
申请日：1997-03-07
申请人： TOOTEC KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KIKUCHI SADATOSHI , BANDO KATSUHIKO , NAKAJIMA MASAMI , NAGAYAMA SEIICHI
IPC分类号： E02D5/28 , E02D27/12
摘要： PROBLEM TO BE SOLVED: To connect a screw reinforcing bar to the top part of a steep pipe pile by attaching an attaching part on the head part outer peripheral part of the steel pipe pile by means of a tightening tool, and screwing the lower end of a screw reinforcing bar on the screw hole of a cylindrical part integrally provided with the attaching part. SOLUTION: A connection device 1 is provided with a flat plate-like attaching part 2 curved by being met to the radius of curvature of the outer peripheral face of the head part 110 of a steel pipe pile 100 and a cylindrical part 3 integrally provided on the width direction center of the attaching part 2. The connection tool 1 is coupled to the outer periphery of the head part 110 of the pile 110 by overlapping the attaching part 2 on the outer peripheral of the head part 110 and screwing and tightening a nut 5 to a bolt 4 inserted from the outside to bolt insertion holes 21, 12 so that the bolt insertion hole 12 of the attaching part 2 is overlapped on a bolt insertion hole 121 provided on the head part 110 side of the pile 100. In this case, if a plurality of the connection tools 1 are arranged on the outer periphery of the head part 110 of the pile 100 in zigzag, a number of the bolt insertion holes 121 are arranged in the circumferential direction of the head part 110, a case in which strength lowering of the head part 110 occurs can be avoided.

7. 发明专利

JPH09279768A JOINT STRUCTURE OF REINFORCEMENT 失效
公开(公告)号：JPH09279768A
公开(公告)日：1997-10-28
申请号：JP9441496
申请日：1996-04-16
申请人： TOOTEC KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KIKUCHI SADATOSHI , BANDO KATSUHIKO , NAKAJIMA MASAMI , NAGAYAMA SEIICHI
IPC分类号： E04C5/18
摘要： PROBLEM TO BE SOLVED: To provide a joint structure which enables easily achieving mechanical end-to-end coupling of reinforcements at a construction site, enables joining even differently sized reinforcements, and enables the use of a common joint main body. SOLUTION: The hollow shank 8 of a lock bolt 3 which has an external thread 7 is passed through the end of each of reinforcements 1 which are joined end-to-end. That end of the reinforcement 1 which projects from the lock bolt 3 is struck with a press or the like and deformed to provide a large-diameter deformed part 10 to lock the lock bolt 3 into place. The external thread 7 on the lock bolt 3 is engaged with the horizontally opposite internal threads 4 on both ends of the joint main body 2. When the joint main body 2 is rotated in one direction, the lock bolts 3 are pulled together to join the reinforcements 1 end-to-end. A grout is injected into a grout injection hole 6 in the joint main body 2.

8. 发明专利

JPH02108435A MANUFACTURE OF MOLD 失效
公开(公告)号：JPH02108435A
公开(公告)日：1990-04-20
申请号：JP26195988
申请日：1988-10-17
申请人： NIPPON KOKAN PIPE FITTING MFG
发明人： MORI MASAHIRO , MATSUKAWA YASUTSUGU , NAKAJIMA MASAMI
IPC分类号： B22C7/02 , B22C9/12
摘要： PURPOSE:To improve the quality and the yield of a mold by coating layer surface of mold material with slurry containing micro wave absorbing material and executing micro wave irradiation at the time of manufacturing the mold by melting and causing to flow out the pattern with micro wave irradiation. CONSTITUTION:The pattern 1 formed with wax, etc., is coated with refractory of zircon sand, etc., after dipping into the slurry (refractory material and coloidal silica) and naturally dried and coated with the micro wave permeable mold material 2a under remaining the opening part 3. After repeating this process at several times, local part selected in the pattern 1 in the mold material 2c for a third layer and two or four parts on the surface position of the third mold material 2c facing to locus (l) connecting the opening part 3 are coated with the slurry 4 containing powder of the micro wave absorbing material of graphite, etc. Successively, an intermediate material 5 is charged to the micro wave irradiated apparatus and when the material is irradiated with the micro wave, the pattern is melted and flows out and thermal expansion of the whole pattern all at once is prevented. By this method, crack of the mold is not developed and the quality and the yield of the mold can be improved.

9. 发明专利

JP2002340256A BELL-AND-SPIGOT PIPE JOINT 失效
公开(公告)号：JP2002340256A
公开(公告)日：2002-11-27
申请号：JP2001149387
申请日：2001-05-18
申请人： NIPPON KOKAN PIPE FITTING MFG
发明人： INOUE MASACHIKA , JINKAWA AKIHIRO , HATAYAMA HIDEKI , NAKAJIMA MASAMI
IPC分类号： F16L21/08
摘要： PROBLEM TO BE SOLVED: To provide a bell-and-spigot pipe joint visually confirmed on the correct insert state of a pipe, that is, whether a lock ring in the joint is engaged with a latch groove of the pipe or not, and capable of securing a pipe stopping function, and eliminating insufficient insertion of the pipe. SOLUTION: In this bell-and-spigot pipe joint, as the end part of the pipe P is once inserted from a socket 5 until it abuts on a pipe end stopper part 6, and then pulled back, the lock ring 3 is reduced in diameter by abutting on a tapered surface 10 in the socket 5 to be engaged with the latch groove 4 of the pipe P. The outer peripheral wall of the socket 5 of the joint body 1 is provided with an inspection window 11 for confirming whether the lock ring 3 engages with the latch groove 4 or not.

10. 发明专利

JPH11293851A METHOD FOR SPLICING DEFORMED BAR AND JOINT STRUCTURE THEREFOR 失效
公开(公告)号：JPH11293851A
公开(公告)日：1999-10-26
申请号：JP10506998
申请日：1998-04-15
申请人： TOOTEC KK , NIPPON KOKAN PIPE FITTING MFG
发明人： KIKUCHI SADATOSHI , BANDO KATSUHIKO , NAKAJIMA MASAMI , NAGAYAMA SEIICHI
IPC分类号： E04C5/18 , E04G21/12
摘要： PROBLEM TO BE SOLVED: To provide a joint structure whereby the ends of deformed bars can be spliced easily and securely through on-site construction work. SOLUTION: An external thread 12 of a push bolt 3 on one deformed bar 1 is threaded into an internal thread 9 at one end of a joint main body 2 and the external thread 12 of a push bolt 3 on the other deformed bar 1 is threaded into an internal thread 9 at the other end of the joint main body 2 to press split inners 4 against the tapered inner peripheral surface of the joint main body 2 by use of the threaded end of each bolt 3. Meshing teeth 15 on the inner surfaces of the split inners reinforce engagement with antislip grooves 16 provided in the surfaces of the knots 8 of the deformed bars 1. Since the meshing teeth 15 of the split inners 4 mesh in the antislip grooves 16 previously provided in the surfaces of the knots 8, secure meshing is made possible by the small clamping torques of the push bolts 3 and can be made to fully resist the strong force to pull out the deformed bars 1.

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