WO2012014840A1 - スパイラル鋼、及びその応用製品並びにスパイラル鋼の製造方法 - Google Patents
スパイラル鋼、及びその応用製品並びにスパイラル鋼の製造方法 Download PDFInfo
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- WO2012014840A1 WO2012014840A1 PCT/JP2011/066848 JP2011066848W WO2012014840A1 WO 2012014840 A1 WO2012014840 A1 WO 2012014840A1 JP 2011066848 W JP2011066848 W JP 2011066848W WO 2012014840 A1 WO2012014840 A1 WO 2012014840A1
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- Prior art keywords
- spiral steel
- steel
- spiral
- central axis
- long side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F27/1144—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections with a plurality of blades following a helical path on a shaft or a blade support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/14—Twisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/26—Screws
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/56—Screw piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
Definitions
- the present invention relates to a spiral steel formed by twisting a steel material having a specific shape, an application product thereof, and a method for producing the spiral steel.
- piles used by placing them in the soil shown in Patent Document 1 As concrete examples, piles used by placing them in the soil shown in Patent Document 1, pillars secured by joining steel pipes to twisted flat bars shown in Patent Document 2, and the lifting shown in Patent Document 3 There are prevention anchors (tent pegs). These piles and the like can be easily installed by placing and can be easily removed by pulling them out while turning.
- Patent Document 4 As other uses of the torsion flat bar, as shown in Patent Document 4, a drill for a digger, as in Patent Document 5, a conveying device using a torsion flat bar as a feed screw, and further, Patent Document 6 As shown in Fig. 4, it can be used as a device for kneading food and powder with the left and right twisted flat bars facing each other.
- Patent Document 7 discloses that a flat bar is formed by fixing both ends of a flat bar, twisting one end and rotating the other end to twist the flat bar. It is also disclosed.
- the twisted flat bar which can be used for a wide variety of applications, as shown in FIG. 1, in the state where the flat bar F is twisted around the central axis O, the twisted flat bar is not like a pile.
- the pulling force there is an advantage that a predetermined mechanical strength is exhibited and it is difficult to pull out easily.
- the compressive force from the longitudinal direction of the torsional flat bar and the bending load applied from the vertical direction in FIG. 1 for example, deformation easily occurs at the location indicated by the arrow, and sufficient mechanical strength is obtained. I can't.
- the problem to be solved by the present invention is to solve the above-mentioned problems, high mechanical strength, and easily narrow the pitch interval of the twisted part (spiral wing part) without changing the twist angle. It is to provide a possible spiral steel, its application product, and a method for producing spiral steel.
- the invention according to claim 1 has a shape in which an axis parallel to the longitudinal direction of the steel material is a central axis, and at least three or more long side members are radially arranged with respect to the central axis.
- the spiral steel is characterized by being formed by twisting a steel material having the central steel material along the central axis.
- a hollow tube is disposed at the position of the central axis, and the long side member is disposed and fixed around the hollow tube. It is characterized by being.
- the invention according to claim 3 has a shape in which an axis parallel to the longitudinal direction of the steel material is a central axis, and two long side members are arranged symmetrically with respect to the central axis, and at the position of the central axis.
- the invention according to claim 4 is the spiral steel according to claim 2 or 3, characterized in that a plurality of holes are formed in a wall of the hollow tube.
- the thickness of the cross-section of the long side member increases as the long side member of the steel material moves away from the central axis. It is comprised and the shape of the cross section corresponded to this long side member becomes a substantially rectangular shape by twisting this steel material, It is characterized by the above-mentioned.
- the invention according to claim 6 is a spiral steel pile characterized in that the spiral steel according to any one of claims 1 to 5 is used as a pile placed or buried in soil.
- the invention according to claim 7 is the spiral steel pile according to claim 6, wherein the spiral steel pile has a structure fixed to the spiral steel pile, a part of the spiral steel is exposed to the ground, and the exposed part is the It functions as a support column that supports the structure.
- the invention according to claim 8 is the spiral steel pile according to claim 6, wherein the spiral steel pile is placed in the soil at an angle oriented in the horizontal direction or above, and is used as a landslide anchor and a foundation in the soil. It is characterized by using.
- the invention according to claim 9 is the drainage pipe for placing or embedding the spiral steel according to claim 4 in the soil and discharging the water in the soil through the hollow tube, or the hollow tube It is a spiral steel pile characterized by being used as a grout material injection pipe for injecting grout material into the soil through.
- the invention according to claim 10 is a drilling machine characterized in that the spiral steel according to any one of claims 1 to 5 is used for a drill part of a drilling machine.
- the invention according to claim 11 is a feeding device characterized in that the spiral steel according to any one of claims 1 to 5 is used as a feeding screw of the feeding device.
- the invention according to claim 12 is a kneading apparatus characterized in that the spiral steel according to any one of claims 1 to 5 is used as a kneading blade of a kneading apparatus.
- the invention according to claim 13 is characterized in that the spiral steel according to claim 2 or 3 is used as a wall material that separates two fluids and exchanges heat with each other in a heat exchanger. It is a heat exchanger.
- the invention according to claim 14 is characterized in that, in the spiral steel manufacturing method according to any one of claims 1 to 5, the steel material is twisted while applying a predetermined tension in the longitudinal direction of the steel material.
- the invention according to claim 15 is the spiral steel manufacturing method according to claim 14, wherein two holding means for holding both ends of the steel material are used, and at least one holding means is separated from the other holding means. And at least one holding means is rotated about the central axis of the steel material.
- a steel material having a shape in which at least three or more long side members are arranged radially with respect to the central axis, with the axis parallel to the longitudinal direction of the steel material being the central axis, Therefore, the mechanical strength of the spiral steel can be remarkably increased compared to the twisted flat steel.
- the pitch interval between the twisted portions can be easily narrowed without changing the twist angle.
- the hollow tube is disposed at the position of the central axis of the steel material, and the long side member is disposed and fixed around the hollow tube. It can be used for various purposes such as heat exchangers and drainage pipes by forming a flow path of fluid or the like inside the hollow tube.
- the central axis is an axis parallel to the longitudinal direction of the steel material, and the two long side members are symmetrically arranged with respect to the central axis, and the central axis is located at the position of the central axis.
- the hollow tube can be used as a part of a support column, or a flow path of fluid or the like can be formed inside the hollow tube, and can be used for various applications such as a heat exchanger and a drain pipe. .
- the fluid moved through the hollow tube can be discharged out of the hollow tube through the hole,
- the fluid located outside the tube can be taken into the hollow tube through the hole and moved through the hollow tube, and can be used for various applications.
- the long side member of the steel material is configured to increase the thickness of the cross section of the long side member as it is away from the central axis, and corresponds to the long side member by twisting the steel material. Since the cross-sectional shape is substantially rectangular, the thickness of the portion corresponding to the long side member of the spiral steel (spiral wing portion) is always constant, and it is possible to suppress a decrease in mechanical strength of the spiral wing portion.
- the invention according to claim 6 is a spiral steel pile characterized in that spiral steel is used as a pile that is cast or buried in the soil, and therefore, against stress and compressive force from the lateral direction of the pile. Since it is resistant to deformation and the pitch interval of the spiral wings can be narrowed, it is possible to increase the contact area with the soil and increase the resistance to the pulling force.
- the invention according to claim 7 has a structure fixed to the spiral steel pile, and a part of the spiral steel is exposed to the ground, and the exposed part functions as a column supporting the structure. It is also possible to use spiral steel as a support, which has been difficult with conventional twisted flat steel, by utilizing the increase in mechanical strength of steel.
- the spiral steel pile is placed in the soil at an angle oriented in the horizontal direction or upward, and used as a landslide anchor and a foundation in the soil.
- spiral steel is cast or buried in the soil, and a drain pipe for discharging the water in the soil through the hollow tube, or a grout material is injected into the soil through the hollow tube. Because it is a spiral steel pile characterized by being used as a pipe for grout material injection, the mechanical strength of the spiral steel itself is high, and the efficiency of placing and burying in the soil is high, so it is excellent for draining water It becomes possible to provide a pipe or a pipe for grout injection.
- the invention according to claim 10 is a hole digger characterized in that spiral steel is used for a drill portion of a digger, so that the pitch interval of the spiral wing portion of the spiral steel is reduced, and the contact area with soil The soil can be scraped out more efficiently than the conventional twisted flat steel.
- the invention according to claim 11 is a feeding device characterized in that spiral steel is used as the feeding screw of the feeding device. Therefore, the conventional twisted flat steel is utilized by utilizing the high mechanical strength of spiral steel. In this case, the feed screw itself can have a support function for the feed member, which is difficult.
- the invention according to claim 12 is a kneading device characterized in that spiral steel is used as a kneading blade of the kneading device, so that the pitch interval of the spiral wing portion of the spiral steel is narrowed and contact with the object to be kneaded.
- the area can be increased and kneading can be performed more efficiently than the conventional twisted flat bar.
- the heat exchanger is characterized in that the two fluids are separated in the heat exchanger and used as wall materials capable of exchanging heat with each other. It is also possible to increase the heat exchange efficiency by narrowing the pitch interval of the portions, increasing the contact time and area between the spiral wing and the fluid.
- the steel material is twisted while applying a predetermined tension in the longitudinal direction of the steel material, so that it is possible to form spiral steel with a constant pitch interval between the spiral blade portions. It becomes.
- spiral steel manufacturing method in the spiral steel manufacturing method, two holding means for holding both ends of the steel material are used, tension is applied so that at least one holding means is separated from the other holding means, and at least one of the holding means is provided. Since the holding means is rotated about the central axis of the steel material, spiral steel can be easily manufactured with an extremely simple configuration.
- (A) is the cross section of the steel material before twisting, (b) has shown the cross section of the steel material after twisting. It is a figure explaining the steel materials used as the 4th example used for spiral steel of the present invention.
- (A) is the cross section of the steel material before twisting, (b) has shown the cross section of the steel material after twisting. It is a figure explaining the steel materials used as the 5th example used for spiral steel of the present invention. It is a figure explaining the steel materials used as the 6th Example utilized for spiral steel of the present invention. It is a figure explaining the steel materials used as the 7th Example utilized for spiral steel of the present invention. It is a figure explaining the Example at the time of utilizing the spiral steel of this invention for a heat exchanger. It is a figure explaining the Example at the time of utilizing the spiral steel of this invention for the pipe for grout material injection
- FIG. 2 is a view for explaining the spiral steel of the present invention.
- the spiral steel of the present invention has a shape in which an axis parallel to the longitudinal direction of the steel material is a central axis O, and at least three or more long side members (f1 to f4) are radially arranged with respect to the central axis O. It is a spiral steel formed by twisting a steel material along the central axis.
- Fig.2 (a) shows sectional drawing perpendicular
- FIG.2 (b) has shown the side view of spiral steel.
- the spiral steel has a portion with weak mechanical strength indicated by an arrow in the twisted flat bar in FIG.
- the mechanical strength can be remarkably increased even when the spiral steel is subjected to a longitudinal compressive force or a stress from the vertical direction of the drawing.
- the material of the steel material used for the spiral steel of the present invention is not particularly limited, but a material such as steel that has high mechanical strength and can be twisted is preferable.
- the steel material before twisting is at least three or more with respect to the central axis O parallel to the longitudinal direction of the steel material.
- a long side member (f1 to f4) arranged radially is used.
- the number of the long side members is not limited as long as it is three or more, but as shown in FIGS. 5 to 8, the steel material in which the four long side members are arranged in a cross shape has a long side member. More than three or five or more can be obtained at a low price in the market, and can be used more suitably, for example, since the long side members are relatively few, the processing is easy.
- the spiral steel obtained by twisting such a steel material can have a mechanical strength that is significantly higher than that of the twisted flat steel despite the fact that the number of long side members is not so large.
- the steel material it is possible to employ a steel material having a cross section as shown in FIG. This sets the thickness of the long side member to be thicker on the outer side thickness w2 than on the thickness w1 of the portion close to the central axis.
- the outer side of the long side member is more stretched, and therefore the outer thickness of the long side member becomes thinner than the portion near the central axis.
- the shape after twisting is, for example, as shown in FIG. 5B, for example, the outer thickness w2 ′ of the long side member and the thickness w1 ′ of the portion close to the central axis are substantially the same thickness.
- reference numeral f1 ′ indicates a spiral portion in which the long side member f1 is twisted.
- the thickness w2 on the outer side of the long side member can be made thinner in advance than the thickness w1 of the portion close to the central axis O, before the steel material is twisted.
- the shape of the spiral steel after twisting is such that the thickness w2 'on the outer side of the long side member is thinner (w2' ⁇ w2), as shown in FIG. 7B.
- w1 ′ w2 ′ as shown in FIG. 5 or w1 ′> w2 ′ as shown in FIG.
- w1 ′ w2 ′ as shown in FIG. 5 or w1 ′> w2 ′ as shown in FIG.
- w1 ′ w2 ′ as shown in FIG. 5 or w1 ′> w2 ′ as shown in FIG.
- w2 ′ w2 ′ as shown in FIG. 5 or w1 ′> w2 ′ as shown in FIG.
- the tip section of the spiral steel wing part is tapered or acute as shown in FIG. The frictional resistance at the tip can be reduced, which is more preferable.
- FIG. 8 is a view for explaining another embodiment (fourth embodiment) of the spiral steel of the present invention.
- the feature of the embodiment of FIG. 8 is that the lengths of the long side members f1 to f4 are different. More specifically, the horizontal length L1 of the drawing formed by the long side members f2 and f4 is longer than the vertical length L2 of the drawing formed by the long side members f1 and f3. It is set.
- a spiral steel having a cross section as shown in FIG. 8B can be formed.
- the feature of this spiral steel is that the long side members f2 and f4 mainly play the role of the wing part (spiral part) of the spiral steel.
- a flat steel plate serving as a long side member is prepared and welded to radially arrange three or more long side members with respect to the central axis. can do.
- a square member such as a cylinder, a triangular prism, or a quadrangular prism in the central portion, and then to weld the long side members radially.
- or FIG. 8 is formed by extruding the steel material melt
- hollow tubes P1 to P3 are arranged at the position of the central axis O, and the long side members f1 to f4 are the hollow tubes. It is possible to use steel materials arranged and fixed around P1 to P3.
- the width of the hollow tube is larger than the thickness of the long side member, by twisting the steel material with the long side member joined to the hollow tube, the transverse direction of the spiral steel (with respect to the longitudinal direction in which the spiral steel extends) It is possible to increase the mechanical strength of the spiral steel against stress from the vertical direction.
- the number of long side members is not limited to three or more.
- an axis parallel to the longitudinal direction of the steel material is a central axis O
- the two long side members f1 and f2 are
- the hollow tubes P1 to P3 are arranged at positions of the central axis O, and the long side members are arranged and fixed around the hollow tube.
- Steel materials can be used, and even when such steel materials are used, they can sufficiently withstand the stress from the lateral direction of the spiral steel.
- FIG. 9 is an example in which a cylindrical steel pipe P1 is used as a hollow pipe, (a) is an example in which four long-side members f1 to f4 are joined to the hollow pipe P1, and (b) and (C) shows an example in which three long-side members and two long-side members are joined.
- FIG. 10 shows an embodiment in which a steel pipe P2 having a quadrangular cross section is used as the hollow pipe.
- FIG. 10A shows four long side members f1 to f4 that are connected to the sides of the hollow pipe P2 (FIG. (B) is an example in which the long-side member is arranged and fixed at the corner of the hollow tube P2. Furthermore, (c) shows an example in which two long side members are joined to the side of the hollow tube P2.
- FIG. 11 shows an embodiment in which a steel tube P3 having a hexagonal cross section is used for the hollow tube, and (a) is an example in which four long side members f1 to f4 are joined to the side portion of the hollow tube P3. , (B) and (c), three long side members are arranged and fixed on the side or corner of the hollow tube P3. Furthermore, (d) and (e) show an example in which two long side members are joined to the side or corner of the hollow tube P3.
- the hollow tube can be used as a part of the support column, or a flow path of fluid or the like can be formed inside the hollow tube, It can be used for various purposes such as exchangers and drain pipes.
- the fluid moved through the hollow tube can be discharged out of the hollow tube through the holes,
- the fluid located outside the tube can be taken into the hollow tube through the hole and moved through the hollow tube, and can be used for various applications.
- the flat steel twisting method shown in the above-mentioned Patent Document 7 can be used. What is important in producing spiral steel is to twist the entire steel material at a constant speed around the central axis of the steel material while applying the same tension to the plurality of long side members.
- At least two holding means for gripping from the portion near the central axis of the long side member to the outer end of the long side member are prepared, and both ends of the steel material are held, and at least one holding means is provided.
- a tension is applied so as to be separated from the other holding means, and at least one holding means is rotated about the central axis of the steel material.
- each holding means is constituted by a combination of rollers sandwiching each long side member, and two or more such holding means are prepared.
- these holding means are moved relative to the steel material in the longitudinal direction of the steel material while keeping the distance constant.
- Adjacent holding means are set to have different angles for holding the long side members so as to generate a twisting force around the central axis of the steel material.
- such holding means does not generate tension for pulling the steel material, but it is possible to continuously twist the steel material.
- the spiral steel of the present invention is superior in mechanical strength to the conventional twisted flat steel and utilizes the advantages such as a narrow pitch interval of the twisted portion (spiral wing portion).
- the use of flat steel can be expanded further.
- spiral steel When spiral steel is used as a pile that is cast or buried in the soil (spiral steel pile), spiral steel is resistant to deformation against the stress and compressive force from the side of the pile, and the spiral blade Since the pitch interval of the portions can be narrowed, the contact area with the soil can be increased, and the resistance force against the pulling force can be made larger than that of the twisted flat bar.
- the upper structure in order to fix the upper structure, the upper structure is fixed to the pedestal, and a plurality of the pedestal is used to resist the bending moment.
- the pedestal was fixed to the ground by fixing the spiral steel pile.
- the spiral steel pile of the present invention since the mechanical strength including bending rigidity is excellent, the number of piles to be used can be reduced. For example, as shown in FIG. It is also possible to attach the superstructure directly to the spiral steel pile.
- a pile made of twisted flat steel is generally buried downward in the soil, but the spiral steel pile of the present invention can also be placed in the soil at an angle oriented in the horizontal direction or upward. It is.
- anchors for preventing landslides facing the horizontal direction or above that were difficult with conventional twisted flat steel It can also be used as an underground foundation.
- the pitch interval of the spiral blade part of the spiral steel can be narrower than that of the twisted flat steel, and the contact area with the soil can be increased. It is possible to scrape the soil more efficiently than the conventional twisted flat bar of Reference 4. Moreover, since the mechanical strength is high, it is possible to dig a straight hole, and it can be used as an excavator using a power source having a strong rotational force such as a motor.
- spiral steel When spiral steel is used as a feed screw of a feed device, the mechanical strength of spiral steel is used to feed the feed screw itself, which was difficult with the conventional twisted flat steel of Patent Document 5. It is also possible to have a support function for the member. It can also be used as a feeding device for large machines.
- the pitch interval of the spiral blade portion of the spiral steel is narrowed to increase the contact area with the object to be kneaded. It becomes possible to knead more efficiently.
- a kneading apparatus having an equivalent function is configured, the machine itself can be made compact.
- FIG. 12A shows an arrangement of a cylindrical tube T1 surrounding the spiral steel S.
- the hollow tube P constituting the spiral steel S is used as a fluid passage from a dotted arrow a1 to a2, and the spiral steel is formed.
- a space between S and the tube T1 is configured as a fluid passage from solid arrows b1 to b2.
- the movement of the fluid from the arrows b1 to b2 may be performed by rotating the spiral steel.
- the moving directions of the various fluids may be the same direction. As described above, by bringing the two fluids close to each other, a function of facilitating mutual heat exchange can be realized.
- FIG. 12 (b) shows another cylindrical tube T2 arranged on the outer side of FIG. 12 (a).
- FIG. 12 (c) is a diagram in which the fluid that has passed through the fluid passage of the hollow tube of FIG. 12 (b) is further guided to the fluid passage between the tubes T1 and T2.
- FIG. 12D shows that a plurality of fluid passages can be formed between the spiral steel and the tube T1 by closely contacting the tip of the wing portion of the spiral steel S and the inner wall of the tube T1. is there. For example, if there are two or more long side members constituting the wing portion, it is possible to configure two or more fluid passages.
- the fluid having passed through one fluid passage from solid arrow b1 to b2 is guided to another fluid passage (flow passage from solid arrow b2 to b3).
- FIG. 13 and FIG. 14 are application examples of the hollow tube P constituting the spiral steel S provided with a plurality of holes H.
- FIG. 13 shows an example of a grout material injection pipe. As shown in (a), a spiral steel is rotated and screwed into the ground, and then, as shown in (b), a grout material such as a ground improvement material is made of spiral steel. When press-fitting using the hollow tube P, the grout material can be injected into the ground through the hole H.
- FIG. 14 is an example of a water draining pipe.
- water in the ground is taken into the hollow pipe from the hole H of the hollow pipe P (arrow e1), It discharges from one end of the hollow tube P (arrow e2).
- the spiral steel has high mechanical strength and can easily narrow the pitch interval of the twisted portion (spiral wing portion) without changing the twist angle. It is also possible to provide a product for manufacturing the spiral steel and its application products.
Abstract
Description
図2は、本発明のスパイラル鋼を説明する図である。
本発明のスパイラル鋼は、鋼材の長手方向に平行な軸を中心軸Oとし、少なくとも3枚以上の長辺部材(f1~f4)が該中心軸Oに対して放射状に配置された形状を有する鋼材を、該中心軸に沿ってねじることで形成されるスパイラル鋼である。
図2(a)は、スパイラル鋼の長手方向に垂直な断面図を示し、図2(b)はスパイラル鋼の側面図を示している。
なお、図5(b)において、符号f1’は、長辺部材f1がねじられた螺旋状部分を示している。他のf2’~f4’についても同様である。図7及び図8についても同様である。
なお、図8(a)のような鋼材は、図5乃至7に示すような鋼材と比較して、図面の縦方向の高さが低く設定できる。このため、鋼材などの資材をストックする際には、占有スペースをより少なくすることが可能となり、経済的である。
さらに、図9乃至図11に示す中空管P1~P3を使用する場合には、中空管内に円柱状の芯棒を挿入し、スパイラル鋼が中心軸方向に変形しないよう防止することが可能である。また、図10及び図11のように、角状の中空管を使用する場合には、中空管の両端に中空管の内壁と一致する角状の治具を挿入し、該治具を鋼材全体のねじりに合わせて回転させることで、中空管のねじりを補助することも可能である。
本発明のスパイラル鋼は、従来のねじり平鋼と比較し、機械的強度に優れ、ねじられた部分(螺旋羽部分)のピッチ間隔を狭く構成するなどの利点を利用することで、従来のねじり平鋼の用途は勿論のこと、それ以上に拡大することが可能となる。
Claims (15)
- 鋼材の長手方向に平行な軸を中心軸とし、少なくとも3枚以上の長辺部材が該中心軸に対して放射状に配置された形状を有する鋼材を、該中心軸に沿ってねじることで形成されることを特徴とするスパイラル鋼。
- 請求項1に記載のスパイラル鋼において、該中心軸の位置には、中空管が配置され、該長辺部材は、該中空管の周囲に配置固定されていることを特徴とするスパイラル鋼。
- 鋼材の長手方向に平行な軸を中心軸とし、2枚の長辺部材が該中心軸に対して対称に配置された形状を有すると共に、該中心軸の位置には、中空管が配置され、該長辺部材は、該中空管の周囲に配置固定されている鋼材を、該中心軸に沿ってねじることで形成されることを特徴とするスパイラル鋼。
- 請求項2又は3に記載のスパイラル鋼において、該中空管の管壁には、複数の孔が形成されていることを特徴とするスパイラル鋼。
- 請求項1乃至4のいずれかに記載のスパイラル鋼において、該鋼材の長辺部材は、該中心軸から離れるに従い、該長辺部材の断面の厚みが増すように構成され、該鋼材をねじることで、該長辺部材に相当する断面の形状が略長方形となることを特徴とするスパイラル鋼。
- 請求項1乃至5のいずれかに記載のスパイラル鋼を、土中に打設又は埋設される杭として使用することを特徴とするスパイラル鋼杭。
- 請求項6に記載のスパイラル鋼杭において、該スパイラル鋼杭に固定される構造体を有し、該スパイラル鋼の一部は地上に露出し、当該露出部分は該構造体を支持する支柱として機能することを特徴とするスパイラル鋼杭。
- 請求項6に記載のスパイラル鋼杭において、該スパイラル鋼杭を水平方向又はそれより上方に向いた角度で土中に打設し、土すべりアンカー、土中基礎として使用することを特徴とするスパイラル鋼杭。
- 請求項4に記載のスパイラル鋼を、土中に打設又は埋設し、該中空管を通じて土中の水を排出する水抜き用パイプ、あるいは、該中空管を通じて土中にグラウト材を注入するグラウト材注入用パイプとして使用することを特徴とするスパイラル鋼杭。
- 請求項1乃至5のいずれかに記載のスパイラル鋼を、穴掘り器のドリル部分に使用することを特徴とする穴掘り器。
- 請求項1乃至5のいずれかに記載のスパイラル鋼を、送り装置の送りネジとして使用することを特徴とする送り装置。
- 請求項1乃至5のいずれかに記載のスパイラル鋼を、混練装置の混練用羽として使用することを特徴とする混練装置。
- 請求項2又は3に記載のスパイラル鋼を、熱交換器内で、2つの流体を分離すると共に、相互に熱交換可能な壁材として使用することを特徴とする熱交換器。
- 請求項1乃至5のいずれかに記載のスパイラル鋼の製造方法において、該鋼材の長手方向に所定の張力を加えながら、該鋼材をねじることを特徴とするスパイラル鋼の製造方法。
- 請求項14に記載のスパイラル鋼の製造方法において、該鋼材の両端を保持する2つの保持手段を用い、少なくとも一方の保持手段を他方の保持手段から引き離すように張力を付与し、少なくとも一方の保持手段を該鋼材の中心軸を中心として回転させることを特徴とするスパイラル鋼の製造方法。
Priority Applications (5)
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EP11812430.4A EP2599564A1 (en) | 2010-07-28 | 2011-07-25 | Spiral steel, application product of same, and method for manufacturing spiral steel |
US13/812,413 US20130175017A1 (en) | 2010-07-28 | 2011-07-25 | Spiral steel, application product of same, and method for manufacturing spiral steel |
KR1020137003038A KR20130054335A (ko) | 2010-07-28 | 2011-07-25 | 스파이럴강, 및 그 응용 제품 및 스파이럴강의 제조 방법 |
CN201180047081.5A CN103140303B (zh) | 2010-07-28 | 2011-07-25 | 螺旋钢及其应用产品以及螺旋钢的制造方法 |
HK13113256.7A HK1185833A1 (zh) | 2010-07-28 | 2013-11-27 | 螺旋鋼及其應用產品以及螺旋鋼的製造方法 |
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JP2010169706A JP5437944B2 (ja) | 2010-07-28 | 2010-07-28 | スパイラル鋼、及びその応用製品並びにスパイラル鋼の製造方法 |
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EP (1) | EP2599564A1 (ja) |
JP (1) | JP5437944B2 (ja) |
KR (1) | KR20130054335A (ja) |
CN (1) | CN103140303B (ja) |
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JP5995515B2 (ja) * | 2012-05-10 | 2016-09-21 | 三協立山株式会社 | 形材の製造方法 |
PL2867415T3 (pl) * | 2012-06-28 | 2022-05-02 | J.F. Karsten Beheer B.V. | Zespół kotwy gruntowej |
JP2014014837A (ja) * | 2012-07-09 | 2014-01-30 | Kyo Spa:Kk | 螺旋体の製造装置、製造方法、及び螺旋体 |
JP6173671B2 (ja) * | 2012-10-03 | 2017-08-02 | 常郎 後藤 | 構造物用基礎 |
JP2015208764A (ja) * | 2014-04-28 | 2015-11-24 | 株式会社新和製作所 | 捩り棒製造装置 |
US10103081B2 (en) * | 2014-09-08 | 2018-10-16 | Ashwin Bharadwaj | Heat sink |
JP6569171B2 (ja) * | 2014-09-08 | 2019-09-04 | 日之出水道機器株式会社 | 螺旋状杭 |
US20160102922A1 (en) * | 2014-10-10 | 2016-04-14 | Richard Curtis Bourne | Packaged Helical Heat Exchanger |
DK3178996T3 (en) * | 2015-12-09 | 2018-05-07 | Innogy Se | PILE FOR A OFFSHORE MONOPILE FOUNDATION |
CN105710180B (zh) * | 2016-04-22 | 2017-08-11 | 燕山大学 | 一种带有内螺旋曲面的细长筒零件扭转成形法 |
CN106583511B (zh) * | 2016-12-09 | 2018-05-04 | 福州大学 | 应用齿轮齿条进行料片扭转加工的弯曲模及其加工方法 |
EP3388013A1 (en) | 2017-04-12 | 2018-10-17 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Propeller and method in which a propeller is set into motion |
CN109839016B (zh) | 2018-04-09 | 2024-04-19 | 国家电网公司 | 一种导流杆、套管及换流变系统 |
US10935332B2 (en) * | 2018-08-09 | 2021-03-02 | Rheem Manufacturing Company | Fluid flow guide insert for heat exchanger tubes |
KR200494608Y1 (ko) | 2021-07-19 | 2021-11-12 | 한덕구 | 스크류 보강부재, 연결캡 및 이를 포함하는 스크류 보강 어셈블리 |
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- 2011-07-25 CN CN201180047081.5A patent/CN103140303B/zh not_active Expired - Fee Related
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- 2011-07-25 US US13/812,413 patent/US20130175017A1/en not_active Abandoned
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- 2011-07-25 WO PCT/JP2011/066848 patent/WO2012014840A1/ja active Application Filing
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Also Published As
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EP2599564A1 (en) | 2013-06-05 |
US20130175017A1 (en) | 2013-07-11 |
JP2012031445A (ja) | 2012-02-16 |
CN103140303B (zh) | 2016-05-18 |
HK1185833A1 (zh) | 2014-02-28 |
CN103140303A (zh) | 2013-06-05 |
TW201206584A (en) | 2012-02-16 |
KR20130054335A (ko) | 2013-05-24 |
JP5437944B2 (ja) | 2014-03-12 |
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