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11. 发明专利

JPH01127718A DRILL STEEL TUBULAR PILE 失效
公开(公告)号：JPH01127718A
公开(公告)日：1989-05-19
申请号：JP28685587
申请日：1987-11-13
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO , HASHIMOTO MASAHARU , SATO SEIJI
IPC分类号： E02D5/56 , E02D5/72
摘要： PURPOSE:To obtain strong bearing forces by a method in which a spiral projection made of round bar is circumferentially formed over a length less than prescribed times the diameter of the tube on the tip periphery of a steel tubular pile with opened ends in such a way as to prevent the discharge of soil to the outside. CONSTITUTION:A spiral projection 2 made of round or angular bar, having a projection height of 20mm or smaller, is welded over a length less than about 10 times the diameter of the tube at the tip periphery of a steel tubular pile 1 with open ends. Similar projection is also welded to the inside of the tip of the pile 1. The pile 1 can thus be penetrated without removing and discharging soil on the periphery of the pile, permitting sufficient bearing forces to be exhibited.

12. 发明专利

JPS62108994A SINTERING FEEDER 失效
公开(公告)号：JPS62108994A
公开(公告)日：1987-05-20
申请号：JP24723285
申请日：1985-11-06
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , TATENO JIRO , SUEMORI AKIRA , NAKAJIMA KAZUMA
IPC分类号： F27B21/10

13. 发明专利

JPS62107034A ORE-FEEDING METHOD FOR SINTERING 失效
公开(公告)号：JPS62107034A
公开(公告)日：1987-05-18
申请号：JP24783685
申请日：1985-11-05
申请人： KAWASAKI STEEL CO
发明人： NITTA SHOJI , TATENO JIRO
IPC分类号： F27B21/10 , C22B1/20
摘要： PURPOSE:To improve permeability in a charging layer and to improve the quality of sintered ore as well, by vibrating raw materials transferred onto an elastic sheet to undergo grain size segregation and by stowing the above dividedly on a pallet so that fine grains are in the upper layer and coarse grains are in the lower layer. CONSTITUTION:The blended raw material 7 is discharged from an ore-feeding hopper 1 by a fixed quantity and transferred on the elastic sheet 15. Above- mentioned raw material 7 is periodically vibrated by tightening and loosening the above sheet alternately, so that grain size segregation occurs in the vertical direction of the raw material layer. Subsequently, the above raw material 7 is divided into two layers, the upper and lower layers, so as to be fed onto the pallet 4. Resultingly, the coarse grains are stowed in the lower layer part on this pallet; the fine grains, in the upper layer part.

14. 发明专利

JPH02104470A METHOD FOR WELDING SPIRAL RIB MADE OF WIRE ROD ON STEEL PIPE INSIDE SURFACE 失效
公开(公告)号：JPH02104470A
公开(公告)日：1990-04-17
申请号：JP25640488
申请日：1988-10-12
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO , SHIGA ATSUSHI , HASHIMOTO OSAMI , TSUZUKI TATSUYA
IPC分类号： B23K9/032
摘要： PURPOSE:To perform welding the title rib on the steel pipe inside with fine finishing by deforming forcibly the spiral rib formed to the diameter large than the steel pipe inside diameter to the diameter smaller than the steel pipe inside diameter, inserting this into the steel pipe, enlarging its diameter to stick the rib fast to the steel pipe inside and performing welding thereon. CONSTITUTION:An insertion pipe 3 having the diameter smaller than the inside diameter of the steel pipe 1 is inserted into the spiral rib 2 made of a small cross-sectional wire rod formed to the diameter larger than the inside diameter of the steel pipe 1 and its one end is fixed on the insertion pipe 3 by a fixing fittings 4. The insertion pipe 3 is then rotated and the rib 2 is made in a state 2a stuck fast to the outside of the insertion pipe 3 and the other end thereof is fixed thereon by a fixing fittings 5. This insertion pipe 3 is inserted into the steel pipe 1 and fixing of the fixing fittings 4 and 5 is released by a fixing fitting release mechanism 6 and the rib 2 is made in a released state 2b and stuck fast to the inside of the steel pipe 1 and the insertion pipe 3 is pulled out. By this method, welding having ideal finishing can be performed with high efficiency by performing flare welding in a state with the rib 2 stuck fast to the inside of the steel pipe 1.

15. 发明专利

JPH0280115A METHOD FOR WELDING SPIRAL RIB MADE OF WIRE ON STEEL PIPE SURFACE 失效
公开(公告)号：JPH0280115A
公开(公告)日：1990-03-20
申请号：JP23131788
申请日：1988-09-14
申请人： KAWASAKI STEEL CO
发明人： SHIGA ATSUSHI , TATENO JIRO , HASHIMOTO OSAMI , TSUZUKI TATSUYA
IPC分类号： B21C37/26
摘要： PURPOSE:To high-efficiently weld by loosely fitting the rib preformed in some what larger spiral pitch into the pipe, rotating and moving in the direction of the pipe axis on the front end of a welding toach arm while holding by guide rollers made in one body to perform a flare welding. CONSTITUTION:The spiral rib 2 having somewhat smaller diameter than the inner diameter of the steel pipe 1 to be enabled loosely fitting is preformed to have its pitch to be rather larger than the prescribed value. The rib 2 is welded tentatively in its end part and held by the guide rollers 4 set in one body on the front end of the toach arm 3. The flare welding is performed on the pipe bottom position by rotating the steel pipe 1 on a turning roller to move in the axial direction of the pipe axis. The rib 2 in the loosely fitting state, is closely contacted with the inner face of the steel pipe 1 pushed to heat and performed the flare welding. By this method, when the spiral rib preformed to the dimension for loosely fitting by the wire is welded on the steel pipe surface, the primary factors limiting the speed of the flare welding by the welding toach are eliminated entirely to enable welding efficiently.

16. 发明专利

JPH01237021A MANUFACTURE OF STEEL PIPE WITH INSIDE RIB 失效
公开(公告)号：JPH01237021A
公开(公告)日：1989-09-21
申请号：JP6269788
申请日：1988-03-16
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO
IPC分类号： B21C37/08 , B21C37/15 , B21C37/26
摘要： PURPOSE:To easily and economically manufacture a steel pipe with an inside rib by forming a long steel plate with a projection making a spiral by an O- press through a U-press into an O-shape and then seam welding it. CONSTITUTION:When multi-row projections which are provided obliquely to a width direction of the steel plate are formed in a circular shape, a right and a left end of adjacent linear projections meet to make a steel plate 3 with a linear projection forming a spiral 4. This steel plate 3 is formed by an O-press into an O-shaped (g) pipe through a U-shape bending (a) and seam-welded into the final product (f). Hereby, the steel pipe with an inside rib can be manufactured easily and economically.

17. 发明专利

JPH01233014A STEEL PIPE WITH INSIDE RIBS AND ITS MANUFACTURE 失效
公开(公告)号：JPH01233014A
公开(公告)日：1989-09-18
申请号：JP6084088
申请日：1988-03-15
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO
IPC分类号： E02D5/28 , B21C37/06 , B21C37/26 , B23K11/00 , E02D5/56
摘要： PURPOSE:To stabilize quality, to simplify a manufacturing stage and to reduce manufacturing cost by inserting and fixing a sleeve obtained when a thin plate having preformed projections is formed in a cylindrical shape to the tip or the overall length of a steel pipe. CONSTITUTION:When the thin plate 3 is wound in a round shape, the projections which form desired helical ribs 2a are formed by pressing in advance on the thin plate 3. The thin plate 3 having projections 2a formed in this way is formed in a round shape to obtain a sleeve 2. It is possible to work the sleeve 2 easily on the thin plate 3 by providing slits 4 on the projection 2a at a prescribe interval. The sleeve 2 obtained in this way is inserted into the steel pipe 1. The product can be manufactured economically by this method.

18. 发明专利

JPH01146011A DRILL STEEL PIPE PILE 失效
公开(公告)号：JPH01146011A
公开(公告)日：1989-06-08
申请号：JP30249287
申请日：1987-11-30
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO , HASHIMOTO MASAHARU , SATO SEIJI
IPC分类号： E02D5/28 , E02D5/56 , E02D5/72
摘要： PURPOSE:To raise the penetration and bearing forces of a drill steel pipe pile by a method in which the inside diameter of the tip of a steel pipe pile with open ends is made smaller over a given length and the thickness of the pipe is made greater than the other portion. CONSTITUTION:The inside diameter of the tip of the open end of a drill steel pipe pile 1 having a serrated tip end 2 is made smaller over a given length, and the thickness t2 of the portion is made slightly greater than that t1 of the other portion. The performance of the pile in terms of penetration and bearing forces can thus be enhanced by only the processing of the tip thickness.

19. 发明专利

JPS63236815A DRILL STEEL TUBE PILE 失效
公开(公告)号：JPS63236815A
公开(公告)日：1988-10-03
申请号：JP6857387
申请日：1987-03-23
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO , HASHIMOTO MASAHARU , SATO SEIJI
IPC分类号： E02D5/28 , E02D5/48 , E02D5/56
摘要： PURPOSE:To obtain a drill steel tube pile which can reasonably stand horizontal and vertical loads by using a pile with a spiral rib as a mid connector. CONSTITUTION:The tip of a pile with open end is shaped into a cylindrical or conical form, and continuous or discontinuous spiral ribs 2 and 2' are provided for both inner and outer face. The lower end of the pile 1 is matched with the upper end diameter of the lower pile for mid connection. An economical pile which can reasonably withstand horizontal and vertical loads can thus be obtained.

20. 发明专利

JPS63233737A RISING STREAM GENERATING FLOAT STRUCTURE 失效
公开(公告)号：JPS63233737A
公开(公告)日：1988-09-29
申请号：JP6698687
申请日：1987-03-20
申请人： KAWASAKI STEEL CO
发明人： TATENO JIRO , UENO RYOJI
IPC分类号： A01K61/00

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