JP2008214990A - Basket body and manufacturing method for basket body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extending and contracting basket body capable of achieving excellent reduction ratio and high strength and to provide a manufacturing method for the basket body by providing a compact, simple, and rotatable connection means in a crossing part of a hoop and a strand and joining the hoop and the connection means mutually by a method other than welding. <P>SOLUTION: Reinforcing rings 7 having a solid structure are arranged at a predetermined interval at the inner periphery of the strand 5 to restrain bending deformation and twisting deformation of the strand 5 which occur when the basket body 1 is extended and contracted. Since it is unnecessary for a hoop connection means to restrain the bending deformation and the twisting deformation of the strand 5, the hoop and the strand are mutually connected by the simple method other than welding. When the basket body 1 is extended and contracted, the reinforcing rings 7 and the hoop 3 are mutually connected at a predetermined interval like a bamboo blind by a hoop connection member to keep fixed pitch of the hoop 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a stretchable casing having an excellent reduction ratio and a method for manufacturing the casing.

In reinforced concrete members such as cast-in-place piles, for the purpose of improving workability in places where the space above the sky is limited, a steel bar strand or the like is used as an axial steel material, and an expandable steel bar is used. FIG. 1 is a conceptual diagram showing a telescopic casing 1.

1A shows a state in which the housing 1 is fully extended, FIG. 1C shows a state in which the housing 1 is completely reduced, and FIG. 1B shows an intermediate state thereof. The casing 1 is composed of a strand 5 that is an axial line, and a band 3 that is arranged at a predetermined interval so as to surround the strand 5, and an intersection of the strand 5 and the band 3 is a rotary coupling member that will be described later. Combined for rotation.

FIG. 10A is a perspective view of the rotary coupling member 120, and FIG. 10B is an exploded perspective view showing a coupling state of the strand 133 and the band 135. The rotary coupling member 120 includes a cylindrical steel sleeve 121, a stud bolt 123, a washer 125, an L-shaped steel angle 127, and nuts 129 and 131.

The strand 133 is passed through the sleeve 121 and fixed with resin. A stud bolt 123 is welded to the sleeve 121, and an angle 127 is fixed by nuts 129 and 131 with a washer 125 interposed therebetween. The band 135 is welded to the angle 127. In addition, the angle 127 can be rotated in the direction A in the figure with respect to the sleeve 121, and the strand 121 and the band 135 are rotatably coupled.

By using such a rotary coupling member 120 and bending the strand 5 on an arc in the direction A of FIG. 1A, it is possible to reduce the bar arrangement interval of the band 3 (FIG. 1B). , (C)), the overall length L of the housing 1 can be reduced, and by extending the strand 5 in a straight line, it is possible to restore the bar spacing of the band 3 (FIG. 1 (a)). It is.

Conventionally, as such a stretchable reinforcing bar, (1) a binding treatment in which an angle fixed to a first cylindrical member holding a strand and an angle fixed to a second cylindrical member holding a strip are combined. Cases using tools (Patent Document 1), (2) As described above, there are cases using a connecting jig in which a stat bolt welded to a cylindrical member and an angle are combined (Patent Document 2).
JP-A-2005-48519 JP 2006-89960 A

However, both the cases (1) and (2) have the following problems.

FIG. 11 is a view showing the arrangement of the band bars 135 when the above-described rotary coupling member 120 is used. FIG. 11A shows a state where the casing is extended (state shown in FIG. 1A), and FIG. ) Is a diagram showing a state in which the housing is contracted (state shown in FIG. 1C). In the state where the housing is extended, the band bars 135a and 135b are arranged at a predetermined interval p. When the housing is reduced, the band bars 135a and 135b are reduced to the interval h.

The predetermined interval p is also determined by design standards and the like, and cannot be changed depending on the body part. The interval h is substantially determined by the height of the angle 127 of the coupling jig. That is, the reduction ratio of the housing can be expressed by h / p, but it is necessary to make the coupling jig small in order to increase the reduction efficiency. However, in order to restrain the bending deformation and torsional deformation of the strands of the connecting portion, the connecting jig requires a large and robust structure, and there is a problem that a small and simple one cannot be used.

Moreover, there is a problem in that, if the strands and the strips are not securely fixed by welding or the like as in the conventional art, the pitch of the strips may be shifted when the casing is expanded or contracted.

Furthermore, in order to firmly fix the band and the strand, if welding is used for the connection between the band and the coupling member, the strength of the band at the welded portion is reduced and a considerable man-hour is required for inspection of the welded portion. There's a problem. In addition, there is a problem that it is impossible to use a high strength band that cannot be welded.

12A and 12B are diagrams showing a welding method at the time of strip processing. FIG. 12A is a view in which two C-shaped strips are flared and overlapped, and FIG. 12B is a weld processed by butt welding. A closed band is shown.

In a telescopic frame, if the roundness of the band is poor, there is a risk that a large stress is locally generated at the intersection of the band and the strand due to the restraint of bending deformation and torsional deformation of the strand at that part. For this reason, it is necessary to use a weld-closed type band having a higher roundness. However, there is a problem that high technology is required and the cost is high in the processing of the welded closure type stirrup.

The present invention has been made in view of such a problem, and it is possible to reduce the size and simpleness of the rotatable coupling means at the intersection of the strip and the strand, and to join the strip and the coupling means other than welding. It is an object of the present invention to provide a stretchable casing having excellent reduction ratio and high strength and a method for manufacturing the casing.

In order to achieve the above-described object, the first invention includes a strand that is an axial line, a band provided around the strand, a reinforcing ring provided on at least one of the inner surface and the outer surface of the strand, Reinforcing ring coupling means for coupling the strand and the reinforcing ring so that a crossing angle can be changed, and by bending the strand on an arc, the spacing between the band bars can be reduced. It is possible, and it is possible to return the bar arrangement interval of the band reinforcement by extending the strand in a straight line.

The reinforcing ring may include a plurality of U-grooves that are coupling portions with the reinforcing ring coupling means, and may include a cutting portion provided in at least one location of the annular ring.

The reinforcing ring coupling means includes a cylindrical member that holds the strand, a bar that is fixed to the cylindrical member at an end, and that prevents the reinforcing ring from falling off the bar. And a joining member installed on the bar material.

You may further have a band connecting means to couple | bond the said strand and the said band with a crossing angle so that change is possible.

In this case, the band reinforcing means includes a strand connecting member that holds the strand and a band connecting member that holds the band, and the band connecting member is located at one place for holding the band. A holding member that rotatably joins the band connecting member and the strand connecting member, wherein the band is inserted into the holding unit, and the holding unit and the band reinforcing The band reinforcement coupling means includes a strand coupling member that holds the strand and a band reinforcement coupling member that holds the band reinforcement, and the band reinforcement coupling member includes the band A fastening portion that contacts a line, and a joining member that rotatably joins the band joining member and the strand joining member may be provided, and the fastening portion may be fixed to the strip by a fastening member.

You may further have a band connecting member which connects the said band with a fixed space | interval.

According to the first invention, the rotatable coupling means at the intersection of the strip and the strand can be made small and simple, and the joining of the strip and the coupling means can be performed by a method other than welding. Therefore, it is possible to provide a stretchable casing having an excellent reduction ratio and high strength.

The second invention includes a step (a) in which a plurality of the strips are arranged at a predetermined interval, and a strand in which a cylindrical member is attached at a predetermined interval at a predetermined center angle interval inside the strap. , A step (c) of connecting the crossed portion of the strip and the strand by the strap connecting means, and a step of reducing the outer diameter so that the cut portions of the reinforcing ring overlap each other. (D) and the step (e) of inserting the reinforcing ring with the outer diameter reduced into the inside of the strand, and the outside of the reinforcing ring with the outer diameter reduced at the tubular member mounting position. A step (f) for returning the diameter, a step (g) for connecting the cut portion of the reinforcing ring with a connecting plate, and a step (h) for connecting the reinforcing ring and the cylindrical member. This is a method for manufacturing a housing.

You may further comprise the process (i) which connects the said reinforcement ring and the said strip at a predetermined space | interval with the said strip reinforcement member after the said process (h).

According to the second aspect of the invention, the rotatable coupling means at the intersection of the strip and the strand can be made small and simple, and the joining of the strip and the coupling means can be a method other than welding. Therefore, it is possible to provide a method for manufacturing a stretchable casing having an excellent reduction ratio and high strength.

According to the present invention, the rotatable coupling means at the intersection of the strip and the strand is made small and simple, the joining of the strip and the coupling means is a method other than welding, excellent in reduction ratio, A highly stretchable casing and a method for manufacturing the casing can be provided.

Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a conceptual diagram showing a telescopic casing 1. FIG. 1A shows a state in which the casing 1 is fully extended, and FIG. 1C shows a state in which the casing 1 is completely reduced. b) is a diagram showing an intermediate state. By bending the strand 5 on the arc in the direction A of FIG. 1A, the bar spacing of the band 3 can be reduced, and the overall length L of the housing 1 can be reduced. Moreover, it is possible to return the bar arrangement | positioning space | interval of the band 3 by extending the strand 5 linearly.

As described above, the frame 1 is composed of the strand 5 that is the axial line and the band 3 that is arranged at a predetermined interval so as to surround the strand 5, and the intersection of the strand 5 and the band 3 is described later. It is connected so that it can rotate by the tie-bar connecting means. A reinforcing ring is installed in the strand 5 at a predetermined interval, and the strand 5 and the reinforcing ring are rotatably coupled by a reinforcing ring coupling member. Details of the reinforcing ring and the reinforcing ring coupling member will be described later.

FIG. 2 is a flowchart showing a method for manufacturing the housing 1. In the manufacturing method of the housing 1, first, the ring-shaped strips 3 are arranged at a predetermined interval (step 201). When the rod diameter is D, the arrangement interval of the strips 3 must be 150 mm in the range from the pile head to 2D, but other portions are obtained by calculation according to the required strength.

In addition, the roundness 3 is not required to have high roundness. That is, as shown in FIG. 12, it may be a flared weld so that two C-shaped strips are overlapped, or a welded closed type processed by butt welding. Moreover, although the material of the band 3 is not specified, a reinforcing bar etc. may be sufficient.

Next, the strands 5 are arranged inside the band 3 at predetermined center angle intervals (step 202). About the diameter of the strand 5, a number, and a space | interval, it calculates | requires by calculation according to required intensity | strength. The strand 5 is a material having flexibility. For example, a strand obtained by combining a carbon fiber, a glass fiber, an aramid fiber, and the like in addition to a PC steel strand and a wire rope is used.

Next, the crossing portion of the band 3 and the strand 5 is coupled by the band coupling means (step 203). FIG. 3 is a view showing the band connecting means 30. The band connecting means 30 includes a band connecting member 31 and a strand connecting member 33.

The band connecting member 31 is a U-shaped plate-like member, and two holes facing each other (hereinafter referred to as “side surfaces” in the U-shaped member) each have two holes for inserting bolts 39. Provided. A surface (hereinafter referred to as a “bottom surface” in the U-shaped member) located between the two side surfaces is provided with a hole for inserting a strand coupling member 33 and a bolt 35 for rotationally coupling. . A portion surrounded by the two side surfaces and the bottom surface is a sandwiching portion 32, and the band 3 is inserted.

The strand coupling member 33, which is a U-shaped plate-like member, has the same structure as the band reinforcement coupling member 31. That is, two holes for inserting the bolts 37 are provided on the two side surfaces, and a hole for inserting the band connecting member 31 and the bolt 35 for rotatably coupling is provided on the bottom surface. A portion surrounded by the two side surfaces and the bottom surface is a sandwiching portion 34 into which the strand 5 is inserted.

The band connecting member 31 and the strand connecting member 33 are rotatably connected by a bolt 35 and a nut 45. The band 3 is inserted into the holding portion 32 and is prevented from falling off by the bolt 39 and the nut 43. Similarly, the strand 5 is inserted into the holding portion 34 and is prevented from falling off by the bolt 37 and the nut 41.

The material of the band connecting member 31 and the strand connecting member 33 is not specified, but may be made of steel, aluminum, resin, or the like. Further, the sizes of the sandwiching portion 32 and the sandwiching portion 34 may not be exactly the same as the diameters of the band 3 and the strand 5, respectively, and there may be play when attached. Further, if the band connecting member 31 and the strand connecting member 33 can be rotatably connected, a rivet or the like may be used instead of the bolt 35 and the nut 45.

Next, the reinforcing ring 7 is attached. (Steps 204-208). FIG. 4 is a diagram showing the structure of the reinforcing ring 7 and the coupling state of the reinforcing ring 7 and the strand 5. The reinforcing ring 7 includes a reinforcing ring main body 9, a plate-like connecting plate 15 that connects the cut portion 13 of the reinforcing ring main body 9, and bolts 17. The reinforcing ring body 9 is an annular plate-shaped member having an L-shaped cross section, and has an outer peripheral surface parallel to the central axis direction of the reinforcing ring 7 and a direction perpendicular to the outer peripheral surface facing the central direction of the reinforcing ring 7. Has a directional surface.

A plurality of U grooves 11 corresponding to the number of strands 5 are provided at the end of the outer peripheral surface of the reinforcing ring main body 9. Further, the reinforcing ring main body 9 has a cutting portion 13 at a part in the circumferential direction. The cutting portion 13 is connected by the plate-like connecting plate 15 and the bolt 17, so that the reinforcing ring main body 9 becomes a complete ring shape.

A rotary coupling member 19 is attached in advance to the reinforcing ring 7 attachment position of the strand 5. The rotary coupling member 19 includes a cylindrical sleeve 21 and a stud bolt 23. The sleeve 21 and the stud bolt 23 are joined by welding. The strand 5 is inserted into the sleeve 21 and fixed with resin at a predetermined position. The material of the sleeve 21 is not specified, but may be made of steel or stainless steel.

The stud bolt 23 is inserted into the washer 25 and the U groove 11 of the reinforcing ring body 9 and is connected to the reinforcing ring 7 by bolts 27 and 29. That is, the reinforcing ring 7 and the strand 5 are coupled so as to be rotatable.

FIG. 5 is a view showing a method of attaching the reinforcing ring 7. First, the outer diameter is reduced so that the cut portions 13 of the reinforcing ring main body 9 overlap each other (step 204).

Next, the reinforcing ring main body 9 is inserted inside the strand 5 with the outer diameter reduced (step 205). FIG. 5A is a view showing a state in which the reinforcing ring body 9 in a state where the outer diameter is reduced so that the cut portions 13 overlap with each other is inserted inside the strand 5.

Next, the outer diameter of the reinforcing ring body 9 with the outer diameter reduced is returned to the original outer diameter at the mounting position of the reinforcing ring 7 where the rotary coupling member 19 is previously attached to the strand 5 (step 206). A washer 25 is inserted into the stud bolt 23 of the rotary coupling member 19 in advance, and the stud ring 23 is inserted and fitted so that the U groove 11 of the reinforcing ring body 9 whose outer diameter has returned is covered.

Next, the cutting part 13 of the reinforcing ring body 9 is connected by the connecting plate 15 and the bolt 17 (step 207).

Next, the reinforcing ring main body 9 and the stud bolt 23 of the rotary coupling member 19 are coupled with the nuts 27 and 29 (step 208). FIG. 5B is a view showing a state in which the strand 5 and the reinforcing ring 7 are combined.

The arrangement pitch of the reinforcing rings 7 needs to be determined according to the diameter of the strand 5 and the like. That is, it is necessary to restrain the bending deformation and torsional deformation of the strand 5 when the casing 1 is expanded and contracted, and to arrange the strands at a pitch necessary for maintaining the accuracy of the reinforcing bar rod. To a 3D pitch.

The reinforcing ring 7 may not be an L-shaped cross section, but may use a flat bar or H steel according to strength requirements. Moreover, although the material of the reinforcement ring main body 9 and the connection plate 15 is not specified, it may be made of steel, stainless steel, or the like.

Further, when the attachment position of the reinforcing ring 7 and the attachment position of the stirrup 3 are the same, the rotation connecting member 19 can be used in place of the strand connecting member 33 in the above-mentioned band connecting means 30. That is, a new stud bolt may be welded in the direction of the outer surface of the sleeve 21 of the rotary coupling member 19, and the newly provided stud bolt may be inserted into the hole in the bottom surface of the band coupling member 31 and fixed with a nut. In this case, the reinforcing ring 7 is attached to the inner surface and the band 3 is attached to the outer surface of one rotary coupling member 19.

Thus, according to the present embodiment, the function of restraining bending deformation and torsional deformation of the strand 5 at the time of expansion / contraction of the housing 1, which is a function that the band connecting means conventionally has, is provided with the reinforcing ring 7. Therefore, the strap connecting means 30 only needs to connect the strap 3 and the strand 5 so as to be easily rotatable, and a small and simple strap connecting means 30 can be used.

Conventionally, the reinforcing ring 7 was mainly used only for reinforcing the upper and lower ends of the housing 1. However, the strength of the reinforcing ring 7 can be improved by making it an integral shape and an L-shaped cross section with respect to the conventional reinforcing ring. By attaching this to the strand 5 at a predetermined interval, the bending deformation and torsional deformation of the strand 5 during expansion and contraction of the housing 1 are reliably restrained, and the accuracy of the housing 1 is also achieved during expansion and contraction of the housing 1. Can be kept. For this reason, it is also possible to use a large-diameter strand 5 having higher bending rigidity and torsional rigidity.

In addition, since the reinforcing ring 7 has one cut portion 13, when inserted into the strand 5, the outer shape can be reduced so that the cut portion 13 overlaps, so that insertion into the housing 1 is easy. It is. Further, when the reinforcing ring 7 is inserted into the stud bolt 23 of the rotary coupling member 19, since the attaching portion is the U groove 11, it can be attached only by covering the reinforcing ring from the upper portion. The work to attach to the inner surface of the is easy.

Since the strap connection means 30 is small, the reduction rate of the housing 1 can be improved. That is, as described above, the reduction rate of the housing 1 is represented by h / p, where p is the band pitch at the time of bar arrangement and h is the band interval at the time of reduction. Since h is mainly determined by the height of the band connecting member, the reduction rate of the housing 1 can be further increased by reducing the height of the band connecting member 31.

Further, the band connecting means 30 does not need to constrain the bending deformation and torsional deformation of the strand 5 and does not require a strength higher than that capable of supporting its own weight, and therefore does not need to be joined by welding. That is, since welding is not used for joining the band 3 and the band connecting member 31, there is no risk of a decrease in strength due to welding of the band 3 and the inspection of the welded portion becomes unnecessary. It is also possible to use a high strength band that cannot be welded.

Further, since the strap connecting means 30 may have some play when attached, the strap 3 does not require high roundness. For this reason, conventionally, a closed welding type streak processed by butt welding has been required. However, although the roundness is slightly inferior, a cheaper and simple flare welding streak can also be used.

Moreover, the miniaturization of the band connecting means 30 can also be expected to improve the strength of the pile. FIG. 6A shows a state in which the band 3 and the strand 5 are combined by the band connecting means 30 according to the embodiment of the present invention, and FIG. It is a figure which shows the state which couple | bonded the band 3 and the strand 5 by the band combination means.

As described above, the band connecting means 30 according to the present embodiment includes the band connecting member 31 and the strand connecting member 33, which are connected by the bolt 35 and the nut 45. In this state, the center distance between the band 3 and the strand 5 is a1.

The conventional hook-shaped band connecting means has the same structure as the rotary connecting member 19. That is, the stud bolt 53 is welded to the cylindrical sleeve 49. The stud bolt 53 is inserted with a washer 51 and a band connecting member 53 which is a bowl-shaped plate member. The sleeve 49 and the band connecting member 53 are rotatably connected by a nut 57. The strand 5 is fixed to the sleeve 49 with resin, and the band 3 and the band connecting member 53 are fixed by welding.

As described above, the conventional band connecting means needs to constrain the bending deformation and torsion deformation of the strand 5, and therefore requires a robust structure. For this reason, the center distance between the band 3 and the strand 5 is a1. Larger than a2.

6 (c) and 6 (d) are diagrams showing the positional relationship between the band 3 and the strand 5 with the illustration of the band connecting means omitted, and FIG. 6 (c) shows the embodiment of the present invention. It is a figure which shows the case where the center space | interval of the strap 3 and the strand 5 is a1 when this strip reinforcement means 30 is used, (d) is the case where the conventional strap reinforcement means is used, It is the figure which showed the case where the center space | interval of 3 and the strand 5 is a2.

In the arrangement of the reinforcing bars in the circular cross section of the pile, the outer diameter of the reinforcing bars is first determined so as to keep a predetermined distance from the inner surface of the hole provided in the ground. Therefore, the arrangement diameters of the strands 5 are d1 and d2 shown in FIGS. 6C and 6D, respectively, when the center distance between the band 3 and the strand 5 is a1 and a2. Here, the bending moment of the pile improves as the strand 5 arranged in the axial direction is closer to the outer edge of the pile cross section. That is, the greater the arrangement diameter of the strands 5, the greater the strength of the pile.

Since the strap connecting means 30 according to the present embodiment is small, the center distance between the strap 3 and the strand 5 is reduced, and thus the arrangement diameter of the strand 5 is increased. Therefore, the strength of the pile can be improved.

Next, a second embodiment will be described. In the following embodiments, constituent elements having the same functions as those of the casing 1 are given the same numbers as in FIGS. 3 to 6, and the same steps as the manufacturing method of the casing 1 shown in FIG. , Avoid duplicate descriptions.

The casing according to the second embodiment is manufactured in the same manner as the casing 1 through steps 201 to 202 and steps 204 to 208. That is, the housing according to the second embodiment does not require the step 203 in FIG. 2, and does not have the band reinforcing means at the intersection between the strand 5 and the band 3.

After step 208, the reinforcing ring 7 and the band 3 are connected at a predetermined interval by the band connecting member 47. FIG. 7A shows a state in which the upper and lower ends of the string-like band reinforcement connecting member 47 are coupled to the reinforcing ring 7 and the band 3 provided between the reinforcing rings 7 is connected by the band connecting member 47. FIG.

The arrangement pitch of the reinforcing rings 7 needs to be determined according to the diameter of the strand 5 and the like. That is, it is necessary to restrain the bending deformation and torsional deformation of the strand 5 when the casing 1 is expanded and contracted, and to arrange the strands at a pitch necessary for maintaining the accuracy of the reinforcing bar rod. To a 3D pitch.

In addition, you may further provide the strip | belt reinforcement coupling | bonding means 30 in a part of cross | intersection part of the strand 5 and the strip 3 as needed. In this case, the connecting method of the band connecting member 47 can be changed.

FIG. 7B is a diagram showing a state in which only the straps 3 are connected by the strap connecting member 47. The upper and lower ends of the strap connecting member 47 are connected to the strap 3 a connected to the strand 5 by the strap connecting means 30. The strap 3b connected at other than the upper and lower ends of the strap connecting member 47 may or may not be connected to the strand 5 by the strap connecting means 30.

In addition, although the material of the connection member 47 is not specified, when the housing 1 is contracted, the arrangement of the strips 3 is reduced, and when the housing 1 is extended, the pitch of the strips 3 may be kept constant. For example, a wire or a cloth string may be used.

Thus, according to 2nd Embodiment, there exists an effect similar to the housing 1. FIG. In particular, the band reinforcing member 47 can maintain the pitch of the band 3 even when the casing 1 is expanded or contracted without using the band connecting means 30. That is, according to the band connecting member 47, the band 3 and the reinforcing ring 7 can be connected in an interdigital manner, and the band 3 can be maintained at a predetermined pitch even when the casing is expanded or contracted.

Further, since the use of the band connecting means 30 can be omitted, the number of parts can be reduced. Furthermore, since the strap connecting means 30 is not used, it is not necessary to consider the height of the strap connecting jig 31. Therefore, since h in FIG. 11 can be made equal to the band diameter, it is possible to obtain a housing with an extremely high reduction rate.

Further, since the use of the strap connecting means 30 can be omitted, the distance between the strap 3 and the strand 5 is further smaller than a1 which is the center distance between the strap 3 and the strand 5 in FIG. I can do it. For this reason, an arrangement diameter larger than the arrangement diameter d1 of the strand 5 in FIG. 6C can be obtained, and the strength of the pile can be improved.

Next, a third embodiment will be described. The casing according to the third embodiment is manufactured in the same manner as the casing 1 in steps 201 to 208. Here, as in the second embodiment, the band connecting means at the intersection between the strand 5 and the band 3 which is step 203 may be omitted. In this case, the band 3 is connected by the band connecting member 47.

The casing according to the third embodiment is further provided with a reinforcing ring on the outer surface of the strand 5 after step 208. FIG. 8 is a view showing an attached state of the reinforcing ring body 10 when the reinforcing ring body 10 is further provided on the outer surface of the strand 5. The reinforcing ring provided on the outer surface includes the reinforcing ring main bodies 10 a and 10 b and the connecting plate 16.

The reinforcing ring main bodies 10a and 10b have a shape obtained by dividing an annular member made of a ring-shaped flat plate into two. The reinforcing ring body 10 is provided with a number of holes 12 corresponding to the number of strands 5 to be attached at regular intervals.

A stud bolt 24 is joined to the rotary coupling member 19 also in the outer surface direction by welding. The stud bolt 24 is inserted into the washer 26 and the hole 12 of the reinforcing ring body 10 and is connected by a nut 28. The reinforcing ring bodies 10a and 10b are connected to each other by a plate-like connecting member 16 to form an annular shape.

Instead of the hole 12 of the reinforcing ring main body 10, a U groove shape may be used similarly to the reinforcing ring 7. The material of the reinforcing ring main body 10 and the connecting plate 16 is not specified, but may be made of steel, stainless steel, or the like.

Thus, according to 3rd Embodiment, there exists an effect similar to the housing 1. FIG. In particular, if a reinforcement ring is provided on the inner and outer surfaces of the strand 5, the strength for restraining the bending deformation and torsional deformation of the strand 5 becomes extremely large, so that the strand 5 having a larger diameter can be used.

Next, a fourth embodiment will be described. Fig.9 (a) is a figure which shows the band connecting member 60 which concerns on 4th Embodiment. Here, the following embodiment is related to the strap connecting means used in the housing 1. As described above, the band connecting means includes the band connecting member and the strand connecting member, but the illustration of the strand connecting member is omitted in the following embodiments.

In addition, the strand coupling member may be coupled to be rotatable in the same structure as the band reinforcement coupling member according to the embodiment, similarly to the band reinforcement coupling unit shown in FIG. As a structure similar to the band connecting member according to the embodiment, they may be combined and rotatably coupled. In addition, the band connecting member and the strand connecting member may be rotatably connected with a bolt and a nut, or may be rotatably connected with a rivet or the like.

The band connecting member 60 is made of a plate-like member, and has an integrated structure with two U-shaped sandwiching portions 61a and 61b opened in the same direction and a convex portion 63 provided therebetween. Holes into which the bolts 67 are inserted are provided on the two facing surfaces surrounding the U-shaped sandwiching portion 61. The convex portion 63 sandwiched between the two U-shaped portions has a convex shape in the opposite direction to the sandwiching portion 61. A hole 65 for coupling with the strand coupling member is provided on the top surface of the convex portion 63.

The band 3 is inserted into the holding portion 61 and is prevented from falling off by the bolt 67 and the nut 69. The material of the band connecting member 60 is not specified, but may be made of steel, aluminum, resin, or the like.

According to the fourth embodiment, a gap is formed between the hole 65, which is an attachment portion with the strand coupling member, and the band 3 and a fastening operation such as a bolt is possible from above the band 3. Therefore, the bolt can be easily inserted and fastened when the strand coupling member is coupled.

Next, a band connecting member 70 according to a fifth embodiment will be described. FIG. 9 (b) is a view showing the band connecting member 70. The strap connecting member 70 is made of a plate-like member, has a C-shaped sandwiching portion 71, an insertion port 72 for the strap 3 in the C-shaped open portion, and a convex portion 73 on the opposite side of the open portion. Is provided. The insertion opening 72 has a narrower width than the shaft diameter of the band 3. The convex portion 73 has a C-shaped outward convex shape, and has a hole 75 that is a coupling portion with the strand coupling member on the top surface.

The band 3 is inserted into the holding part 71 through the insertion opening 72. At this time, the band 3 is held by the elastic deformation of the band connecting member 70 and is prevented from falling off. The material of the band connecting member 70 is not specified, but may be made of steel, aluminum, resin, or the like.

According to the fifth embodiment, when the band 3 and the band connecting member 70 are combined, bolts and nuts for preventing dropout are not required, so that the connection is easy and the number of parts can be reduced. .

Next, a band connecting member 80 according to a sixth embodiment will be described. FIG. 9 (c) is a view showing the band connecting member 80. The band connecting member 80 is formed of a bowl-shaped plate member. Both ends of the band connecting member 80 are fastening portions 87a and 87b fastened to the band 3 and a convex portion 81 is provided between them. On the top surface of the convex portion 81, a hole portion 83 which is a coupling portion with the strand coupling member is provided.

The two fastening portions 87 a and 87 b are brought into contact with the strap 3, and the strap 3 and the fastening portions 87 a and 87 b are fastened by the fastening member 85. Although the fastening member 85 is not specified, a binding wire such as a wire, a hose band, a resin binding band, or the like can be used. Moreover, although the material of the band connecting member 80 is not specified, it may be made of steel, aluminum, resin, or the like. The fastening portion 87 may have a flat plate shape or a semicircular shape in accordance with the shape of the contact surface with the band 3. Alternatively, the fastening portion 87 may be a single location and only one location may be fastened by the fastening member 85.

According to the sixth embodiment, the shape of the band reinforcing member 80 may be simple, and the connecting method with the band 3 can be combined by the simple connecting member 85, so that attachment is easy.

Next, a band connecting member 90 according to a seventh embodiment will be described. FIG. 9 (d) is a view showing the band connecting member 90. The band connecting member 90 is formed of a trapezoidal plate-like member. The trapezoidal slope portion is provided with sandwiching portions 91a and 91b. On one side of the sandwiching portions 91a and 91b, strap reinforcement holding portions 93a and 93b that are integrally bent parallel to the trapezoidal top surface are provided. Provided. The strap holding portion 93 is provided with a tap hole 99 into which a bolt 97 for coupling with the strap 3 is screwed. The trapezoidal top surface is provided with a hole portion 95 that is a coupling portion with the strand coupling member.

The band 3 is inserted into the holding portions 91a and 91b, the bolt 97 is screwed into the tap hole 99, and the bolt 97 is pressed against the band 3 to prevent the band 3 from falling off. The material of the band connecting member 90 is not specified, but may be made of steel, aluminum, resin, or the like. Further, the strap holding portion 93 may be used as one place, and fastening with the bolt 97 may be performed at only one place.

According to the seventh embodiment, the shape of the band connecting member 90 may be simple, and since the tap hole 99 is provided, attachment is easy.

Next, a band connecting member 100 according to an eighth embodiment will be described. FIG. 9 (e) is a view showing the band connecting member 100. The band connecting member 100 is formed of a trapezoidal plate-like member. The trapezoidal slopes are provided with sandwiching portions 101a and 101b, and the strap holding portions 103a and 103b bent outwardly integrally with the trapezoidal top surface on one side of the sandwiching portions 101a and 101b. Is provided. On the top surface of the trapezoidal shape, a hole portion 105 that is a coupling portion with the strand coupling member is provided.

When the strap 3 is inserted into the holding portions 101a and 101b, the strap reinforcing portions 103a and 103b are elastically deformed and pressed against the strap 3 to prevent the strap 3 from falling off. The material of the band connecting member 100 is not specified, but may be made of steel, aluminum, resin, or the like.

According to the eighth embodiment, the shape of the band connecting member 100 may be simple, and since there is no bolt or the like for the connection with the band 3, attachment is easy and the number of parts can be reduced.

Next, a band connecting member 110 according to a ninth embodiment will be described. FIG. 9 (f) is a view showing the band connecting member 110. The band connecting member 110 is formed of a substantially U-shaped plate member. Clamping portions 115a and 115b are provided on the band holding portions 113a and 113b corresponding to the side surfaces of the U-shaped member. The insertion part 116a, 116b narrower than the axial diameter of the band 3 is provided in the band 3 insertion part of the holding parts 115a, 115b. The surface corresponding to the bottom surface of the U-shaped member is provided with a convex portion 117 having a convex shape outward from the band connecting member 110, and the top surface of the convex portion 117 is a coupling portion with the strand coupling member. A hole 119 is provided.

When the band 3 is struck into the holding part 115 from the insertion port 116, the insertion port 116 is narrower than the shaft diameter of the band 3 so that the insertion port 116 is plastically deformed when the band 3 is inserted. It is fitted to the clamping part 115 and is prevented from falling off. In addition, although the material of the band connecting member 110 is not specified, it may be made of steel or aluminum, for example. Further, the insertion direction of the insertion port 116 may be from the vertical direction of the band 3.

According to the ninth embodiment, the shape of the band connecting member 110 may be simple, and since there is no bolt or the like for the connection with the band 3, attachment is easy and the number of parts can be reduced.

As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

For example, a wedge-shaped member may be separately press-fitted in place of the bolt in the connection of the band reinforcement member and the band reinforcement, and it will not be damaged even if the weight of the band reinforcement acts as the band reinforcement connection means. You may bind with a string. Moreover, a reinforcement ring can also be installed only in the outer surface of the strand 5 according to required intensity | strength.

The conceptual diagram which shows the expansion-contraction type housing 1. FIG. The flowchart which shows the manufacturing method of the housing 1. FIG. The figure which shows the band connecting means concerning 1st Embodiment The figure which shows the structure of the reinforcement ring 7, and the connection state of the reinforcement ring 7 and the strand 5. FIG. The figure which shows the attachment method of the reinforcement ring 7, (a) is the figure which shows the state which inserted the reinforcement ring main body 9 of the state which reduced the outer diameter inside the strand 5, (b) is the strand 5 and a reinforcement ring. The figure which shows the state by which 7 was couple | bonded. (A) is a figure which shows the state which couple | bonded the strip 3 and the strand 5 with the strip | belt reinforcement coupling | bonding means concerning 1st Embodiment, (b) is by the hook-shaped rotational coupling means conventionally used. The figure which shows the state which couple | bonded the strip 3 and the strand 5, (c) showed the positional relationship of the strip 3 and the strand 5 at the time of using the strip coupling means concerning 1st Embodiment. FIG. 4D is a diagram showing the positional relationship between the band 3 and the strand 5 when a conventionally used hook-shaped rotary coupling means is used. (A) is a figure which shows the state which connected the reinforcement ring 7 and the strap 3 with the strap connection member 47, (b) is a figure which shows the state which connected the strap 3 with the strap connection member 47. FIG. The figure which shows an attachment state at the time of providing a reinforcement ring in the outer surface of the strand 5. FIG. The figure which shows the band connecting member 60 which concerns on 4th Embodiment. The figure which shows the band connecting member 70 which concerns on 5th Embodiment. The figure which shows the band connecting member 80 which concerns on 6th Embodiment. The figure which shows the band reinforcement coupling member 90 which concerns on 7th Embodiment. The figure which shows the band connecting member 100 which concerns on 8th Embodiment. The figure which shows the band connecting member 110 which concerns on 9th Embodiment. (A) is a perspective view of the rotary coupling jig 120, (b) is a perspective view showing a coupled state of the strand 133 and the band 135. It is the figure which showed arrangement | positioning of the hoop 135, (a) is a figure which shows the state which the housing extended, (b) is a figure which shows the state which the housing reduced. It is the figure which showed the welding method at the time of a strip process, (a) is a figure which shows the strip which carried out the flare welding so that two C-shaped strips may be piled up, (b) is the welding closure processed by butt welding The figure which shows the strap of a type | mold.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ......... Cut 3 ......... Strong 5 ......... Strand 7 ......... Reinforcing ring 9, 10a, 10b ......... Reinforcing ring main body 11 ......... U-groove 12 ......... Hole 13 ......... Cutting Portions 15, 16 ......... Connecting plates 17, 18 ......... Bolt 19 ......... Rotating coupling member 21 ......... Sleeves 23, 24 ......... Stud bolts 25, 26 ......... Washers 27, 28, 29 ... ... Nut 30 ......... Strong coupling means 31 ......... Stroop coupling member 32 ......... Clamping part 33 ......... Strand coupling member 34 ......... Clamping parts 35, 37, 39 ......... Bolts 41, 43, 45 ......... Nut 47 ......... Stroop connecting member 49 ......... Sleeve 50 ......... Stroop connecting means 51 ......... Washer 53 ......... Stoop connecting member 55 ......... Stud bolt 57 ......... Nut 60, 70, 80, 90, 100, 110... ......... Holding part 63 ......... Protrusion part 65 ......... Hole part 67 ......... Bolt 69 ......... Nut 71 ......... Holding part 72 ......... Insertion port 73 ......... Protrusion part 75 ......... Hole Portion 81... Convex portion 83... Hole 85... Fastening member 91... Holding portion 93. 101 ......... Clamping part 103 ......... Horse strap holding part 105 ......... Hole part 113 ......... Horse strap holding part 115 ......... Clamping part 116 ......... Insertion port 117 ......... Convex part 119 ......... Hole 120 ......... Rotating coupling member 121 ......... Sleeve 123 ......... Stud bolt 125 ......... Washer 127 ......... Angle 129, 131 ......... Nut 133 ......... Strand 135 ......... Strip 137 ... ... welds 140, 143 ... ... strips 141, 145 ... ... welds

Claims (10)

A strand that is an axis,
A band provided around the strand;
A reinforcing ring provided on at least one of the inner surface and the outer surface of the strand;
Reinforcing ring coupling means for coupling the strand and the reinforcing ring so that a crossing angle can be changed;
Comprising
By bending the strands on an arc, it is possible to reduce the bar spacing interval, and by extending the strands in a straight line, the bar spacing interval can be restored. An enclosure characterized by being. The reinforcing ring is
The housing according to claim 1, further comprising a plurality of U-grooves that are coupling portions with the reinforcing ring coupling means. The reinforcing ring is
The housing according to claim 1, further comprising a cutting portion provided in at least one place of the annular ring. The reinforcing ring coupling means is
A cylindrical member for holding the strand;
An end portion is fixed to the cylindrical member, and a bar material penetrating the reinforcing ring;
A joining member installed on the bar to prevent the reinforcing ring from falling off the bar;
The housing according to claim 1, comprising: The rod body according to claim 1, further comprising a band connecting means for connecting the strands and the straps so that a crossing angle can be changed. The girdle joint means includes
A strand coupling member for holding the strand;
A band connecting member that holds the band, and the band connecting member comprises:
One or more clamping parts for clamping the band,
A joining member that joins the band joining member and the strand joining member rotatably,
6. The housing according to claim 5, wherein the strap is inserted into the holding portion, and the holding portion and the strap are fixed. The girdle joint means includes
A strand coupling member for holding the strand;
A band connecting member that holds the band, and the band connecting member comprises:
A fastening portion in contact with the band,
A joining member that joins the band joining member and the strand joining member rotatably,
The housing according to claim 5, wherein the fastening portion is fixed to the band with a fastening member. The housing according to claim 1, further comprising a band connecting member that connects the band bars at regular intervals. A step (a) of arranging a plurality of the strips at a predetermined interval;
A step (b) of arranging a strand in which a tubular member is attached at a predetermined interval in advance at a predetermined center angle interval inside the band;
A step (c) of joining the crossed portion of the strap and the strand by the strap connecting means;
A step (d) of reducing the outer diameter so that the cut portions of the reinforcing ring overlap;
Inserting the reinforcing ring having a reduced outer diameter into the strand (e);
Returning the outer diameter of the reinforcing ring in a state where the outer diameter is reduced at the tubular member mounting position;
Connecting the cut portion of the reinforcing ring with a connecting plate (g);
Combining the reinforcing ring and the tubular member (h);
A housing manufacturing method comprising: After step (h)
The housing manufacturing method according to claim 9, further comprising a step (i) of connecting the reinforcing ring and the strap at a predetermined interval by the strap connecting member.

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