JP5567312B2 - Reinforcing member for spiral tube - Google Patents

Description

  The present invention relates to a reinforcing member for a helical tube, and more particularly to a reinforcing member for a helical tube that is used to reinforce a helical tube formed, for example, by spirally winding a strip-shaped strip along the inner surface of the tube.

  2. Description of the Related Art Conventionally, a technique for forming a spiral tube by winding a strip-like strip spirally along the inner surface of a sewer pipe is known. In such a helical tube, the ceiling portion of the helical tube may hang down, and the rigidity of the helical tube may be increased as necessary.

For example, in the tube (spiral tube) of Patent Document 1, upright ribs are formed on the strip, and for example, a reinforcing member is attached between the ribs. And the rigidity of a tube is improved by this reinforcement member.
Japanese Patent Publication No. 7-80238 [B29C 53/78]

  Generally, a reinforcing member attached to a long strip is used by continuously arranging steel materials having a length of 2 to 2.5 m in order to ensure rigidity. However, since the rigidity of the steel material acts on the bending of the spirally wound strip, it is difficult to bend the end portion of the steel material along the curved portion of the strip at the seam portion of the steel material. is there. This problem is no exception in the helical tube disclosed in Patent Document 1. In the technique of Patent Document 1, the end portion of the reinforcing member does not bend along the curved portion of the strip, and the end portion is partially detached from the strip.

  Therefore, a main object of the present invention is to provide a novel reinforcing member for a helical tube.

  Another object of the present invention is to provide a helical tube reinforcing member that can be suitably attached to a strip.

  The present invention employs the following configuration in order to solve the above problems. Note that reference numerals in parentheses, supplementary explanations, and the like indicate correspondence relationships with embodiments described later to help understanding of the present invention, and do not limit the present invention in any way.

A first aspect of the present invention is formed by winding a band-shaped strip in a spiral shape having a rib formed at intervals, a reinforcing member of the spiral tube, the bottom plate portion having a width smaller than the interval, the bottom plate portion Reinforcing material including two side walls that stand up from both ends of the wall and spread outward, and two top plates that extend inward from the respective upper ends of the side walls and form a space therebetween , and a bottom plate of the reinforcing material A connecting member including a bottom plate portion having a smaller width and two side wall portions that rise from both ends of the bottom plate portion and spread outward, and the height of the side wall portion of the connecting member is set between the bottom plate portion and the top plate portion of the reinforcing material set height to fit in and connect the reinforcement material to each other by the inserting the connecting member to each of the longitudinal ends of adjacent reinforcement is a reinforcing member of the screw旋管.

  In the first invention, the reinforcing member (10) for the helical pipe is for reinforcing the helical pipe (100) for rehabilitating the aged sewer pipe (200), for example, and the inner surface (200a) of the sewer pipe. Is attached to a strip of strip (12) which is spirally wound along. The reinforcing member of the spiral tube includes a reinforcing member (52) and a connecting member (54), and the reinforcing members adjacent to each other are connected to each other by a connecting member inserted at each longitudinal end. . For this reason, the direction of the end portion in the longitudinal direction of the reinforcing material is regulated by the connecting member, and the end portion is bent and deformed so as to face the direction of the adjacent reinforcing material. Further, since the positional shift that occurs when the end portion of the reinforcing material is bent and deformed is absorbed by the insertion space between the reinforcing material and the connecting member, the connecting member does not come out of the reinforcing material.

  According to 1st invention, even if it winds a strip helically, the edge part of the longitudinal direction of a reinforcing material can be smoothly bent along the curve part of a strip. Therefore, the longitudinal end portion of the reinforcing material is not detached from the strip, and the reinforcing member for the helical tube can be appropriately attached to the strip.

A second invention is according to the first invention, formed on at least one of the reinforcing member and the connecting member Oite reinforcements in the range where the overlap and the connecting member when the connection member is inserted into the stiffener It is the member for reinforcement of a spiral tube provided with the easily bendable part.

In the second invention, for example, easily variable portions (62, 64, 74) are formed in the reinforcing member (52) or the connecting member (54) of the reinforcing member (10). The inflection parts (62, 64, 74) are formed in a range where the reinforcing member and the connecting member overlap when the connecting member (54) is inserted into the reinforcing member (52). For example, at the end in the longitudinal direction of the reinforcing material, the bottom plate portion (56) of the reinforcing material and the bottom plate portion (66) of the connecting member inserted into the reinforcing material overlap, and the side plate portion (58) of the reinforcing material Since the side plate portion (68) of the connection member overlaps, the rigidity against the bending force of the strip (12) increases accordingly, and it becomes difficult to bend along the curved portion of the strip. By forming the easily inflection part in the range where and overlap, the end part in the longitudinal direction of the reinforcing material can be bent and deformed more easily.

  According to the second aspect of the present invention, the reinforcing member can be easily bent and deformed while maintaining a certain strength or more.

A third invention is a member for reinforcing a helical tube according to the second invention, wherein the easily variable portion is a slit.

  In the fourth invention, the easily variable portion is the slit (62, 64, 74). In the embodiment, the slit (62) is formed in the top plate portion (60) at the end of the reinforcing material (52), and the slit (64) is formed in the side plate portion (58) at the end of the reinforcing material. Moreover, in another Example, a slit (74) is formed in the side-plate part (68) of the edge part of a connection member (54).

A fourth invention is a member for reinforcing a helical tube , according to the second or third invention, wherein the top plate portion is formed excluding an easily variable portion.

In the fourth invention, the top plate portion (60) is formed except for the easily variable portions (62, 64, 74) .

5th invention is a reinforcement member of a helical tube which is dependent on any one of 1st thru | or 4th invention, and is provided with the protrusion part which controls the motion of the connection member with respect to a reinforcement .

In the fifth invention, the reinforcing member (52) or the connecting member (54) is provided with the protruding portions (70, 72). In the embodiment, the projecting portion (70) is formed by bending a part of the bottom plate portion (66) of the connecting member downward in a concave shape. In another embodiment, the protruding portion (72) is formed by bending a part of the bottom plate portion (56) of the reinforcing material upward into a protruding shape. For this reason, for example, even if the connecting member inserted into the reinforcing material further moves in the insertion direction, the end of the reinforcing material in the longitudinal direction collides with the protruding portion of the connecting member, so that the connecting member moves relative to the reinforcing material. Be regulated.

According to the fifth invention, the connecting member does not completely enter the reinforcing material, and the workability is improved.

A sixth invention is a spiral tube formed by spirally winding a strip-like strip having ribs formed at intervals, and has a bottom plate portion having a width smaller than the interval, rising from both ends of the bottom plate portion. Reinforcing material including two side walls extending outwardly and two top plates extending inwardly from the respective upper ends of the side walls and forming a space therebetween, and having a smaller width than the bottom plate of the reinforcing material A connecting member including a bottom plate portion and two side wall portions that rise from both ends of the bottom plate portion and spread outwardly, and the height of the side wall portion of the connecting member is set to a height that fits between the bottom plate portion and the top plate portion of the reinforcing material It is a spiral tube in which the reinforcing members are connected by inserting a connecting member into each of the longitudinal ends of the adjacent reinforcing members .

  According to the present invention, since the longitudinal end portion of the reinforcing material is bent and deformed so as to face the adjacent reinforcing material, the reinforcing member can be appropriately attached over the entire length of the strip.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

It is sectional drawing which shows the use condition of the member for reinforcement of the helical tube of one Example of this invention. It is sectional drawing which shows the strip of FIG. It is sectional drawing which shows the joiner of FIG. It is an illustration figure which shows the state which formed the helical tube in the inner surface of the sewer pipe | tube using the strip and joiner of FIG. It is sectional drawing which shows the state which attached the reinforcing member of the helical tube to the strip of FIG. It is an illustration figure which shows the member for reinforcement of the helical tube of FIG. It is a top view which shows the reinforcing material of FIG. It is a perspective view which shows the edge part of the longitudinal direction of the reinforcing material of FIG. It is a top view which shows the connection member of FIG. FIG. 2 is an illustrative view showing a state in which a connecting member is inserted into an end portion in the longitudinal direction of the reinforcing member in the reinforcing member of the helical tube of FIG. 1. It is a perspective view which shows the connection member of the reinforcement member of the helical tube of other one Example of this invention. It is an illustration figure which shows the member for reinforcement of the helical tube of FIG. It is an illustration figure which shows the reinforcing member of the helical tube of another one Example of this invention. It is an illustration figure which shows the state which inserted the connection member in the edge part of the longitudinal direction of a reinforcement material in the member for reinforcement of the helical tube of another one Example of this invention.

  Referring to FIG. 1, a helical tube reinforcing member (hereinafter simply referred to as “reinforcing member”) 10 according to an embodiment of the present invention includes, for example, a helical tube (internal rehabilitation of an aged sewer pipe 200). Tube) 100 and is attached to a strip-like strip 12 wound spirally along the inner surface 200a of the sewage pipe 200.

  In this embodiment, the sewage pipe 200 is a fume pipe. However, the present invention is not limited to this, and can be applied to a sewage pipe other than the fume pipe, for example, a synthetic resin pipe or a metal pipe.

  First, the spiral tube 100 will be briefly described within the scope necessary for understanding the present invention described later.

  As shown in FIG. 1, the spiral tube 100 is formed by joining the side edges in the width direction of the strip 12 spirally wound along the inner surface 200 a of the sewer pipe 200 with the joiner 14.

  As shown in FIG. 2, the strip 12 is continuously formed by extrusion molding of a synthetic resin such as hard vinyl chloride, and includes a strip-shaped main body (strip main body) 16.

  On one surface of the main body 16, a strip-shaped rib 18 that protrudes toward the inner surface 200 a of the sewer pipe 200 is formed. The ribs 18 are formed over the entire length along the longitudinal direction of the main body 16, and a plurality of, in this embodiment, three ribs 18 are formed at predetermined intervals in the width direction of the main body 16. As will be described in detail later, the reinforcing member 10 is attached between the adjacent ribs 18.

  Anchor portions 20 and 22 are formed at the tip of the rib 18. The anchor portions 20, 22 include a first anchor portion 20 and a second anchor portion 22, and the first anchor portion 20 and the second anchor portion 22 are formed side by side in the height direction of the rib 18.

  For example, the first anchor portion 20 is formed at the tip of the rib 18 and contacts the inner surface 200 a of the sewer pipe 200 in a state where the spiral pipe 100 is formed in the sewer pipe 200. The first anchor portion 20 is formed in a substantially trapezoidal shape having a large width on the tip end side of the rib 18 and a small width on the main body 16 side (start end side), and the width of the surface on the tip end side is 6 mm, for example.

  Further, for example, the second anchor portion 22 is formed on the start end side with respect to the first anchor portion 20, and the center portion thereof is coupled to the rib 18. The second anchor portion 22 has a substantially rectangular cross section, and its width is, for example, 9 mm.

  As a whole, the anchor portions 20 and 22 are formed in a tapered shape in which the length in the width direction gradually decreases toward the tip end side of the rib 18. This is because, for example, when the reinforcing member 10 is pushed between the ribs 18, the rib 18 can be smoothly expanded to the left and right, whereby the reinforcing member 10 is easily attached to the strip 12. It is for attaching to.

  However, “inner side” in this embodiment means the center side of the strip 12 (main body), and “outer side” means the opposite side.

  Grooves 24 are formed on both side edges of the main body 16 in the width direction. Each groove 24 is formed over the entire length along the longitudinal direction of the main body 16, and includes a first wall 26 close to the main body 16 and a second wall 28 far from the main body 16.

  A receiving portion 30 is formed on the first wall 26. The receiving portion 30 is a recess that extends inward from the first wall 26. When the first engaging portion 34 of the strip 12 and the second engaging portion 44 of the joiner 14 are engaged, the receiving portion 30 is joined to the receiving portion 30. 14 width direction side edges are fitted together (see FIG. 1).

  A reinforcing portion 32 is formed on the inner side surface of the first wall 26. The reinforcing portion 32 is for stabilizing the shapes of the first wall 26 and the second wall 28. For example, the reinforcing portion 32 extends inward from the tip of the first wall 26, and the first wall 26 and the first wall 26. The closest (most recent) rib 18 is connected.

  A first engagement portion 34 is formed on the outer surface of the second wall 28. The first engaging portion 34 is a portion that engages with a second engaging portion 44 of the joiner 14 described later, and is formed in a tapered shape that gradually protrudes outward toward the distal end side of the second wall 28.

  Further, a contact portion 36 is formed on the outer surface of the second wall 28. The contact portion 36 protrudes outward from the second wall 28, and in a state where the first engagement portion 34 of the strip 12 and the second engagement portion 44 of the joiner 14 are engaged, the contact portion 36 and the joiner 14. The second protrusion 42 contacts (see FIG. 1).

  As shown in FIG. 3, the joiner 10 is continuously formed by extrusion molding of a synthetic resin such as hard vinyl chloride, and includes a band-shaped main body (joiner main body) 38.

  A first protrusion 40 and a second protrusion 42 are formed on both side edges in the width direction of the main body 38 along the entire length of the main body 38 over the entire length thereof. The first protrusion 40 is formed perpendicular to the main body 38 and protrudes toward the inner surface of the sewer pipe 200. The first protrusion 40 has a size corresponding to the groove 24 of the strip 12 and is fitted into the groove 24 of the strip 12 when the strip 12 and the joiner 14 are joined (see FIG. 1). .

  The second protrusion 42 is formed on the inner side of the first protrusion 40, and sandwiches the second wall 28 of the strip 12 in cooperation with the first protrusion 40. The tip of the second protrusion 42 is bent inward and is locked to the filler 102 filled between the sewer pipe 200 and the strip 12, similarly to the anchor portions 20 and 22 of the strip 12. .

  A second engagement portion 44 is formed on the outer surface of the second protrusion 42. The second engaging portion 44 is a portion that engages with the first engaging portion 34 of the strip 12, and is tapered so that it gradually protrudes outward toward the start end side (the main body 38 side) of the second protrusion 42. Formed.

  Further, a water stop material 46 such as an elastomer is provided at a position of the main body 38 between the first protrusion 40 and the second protrusion 42. The water stop material 46 is provided continuously over the entire length along the longitudinal direction of the main body 38, and the second wall 28 of the strip 12 is connected to the first protrusion 40 and the second protrusion 42 of the joiner 14. When it fits in between, it contacts the start end side of the 2nd wall 28 of the strip 12, and water-stops between these.

  Further, a flexible portion 48 is formed at a substantially central portion of one surface of the main body 38. The flexible portion 48 is made of, for example, synthetic rubber, soft synthetic resin, or elastomer, and is formed continuously along the entire length of the main body 38. As shown in FIG. 3, the flexible part 48 is fixed to the outer surface of the main body 38 along the longitudinal direction of the main body 38 of the joiner 14 with the side edges 48a, 48a in the width direction spaced apart from each other. Yes.

  Further, a bent portion 50 is formed at a position of the main body 38 between the side edge 48a of the flexible portion 48 and the side edge 48a. The bent portion 50 has a substantially inverted U-shaped cross section, and is formed by bending a substantially central portion in the width direction of the main body 38. The bent portion 50 is formed continuously over the entire length of the main body 38 and protrudes to the outer surface side of the main body 38 (the inner surface 200a side of the sewer pipe 200).

  In the above, the strip 12 and the joiner 14 which comprise the spiral tube 100 were demonstrated. As described above, such a strip 12 is spirally wound along the inner surface 200a of the sewage pipe 200, and the side edges in the width direction of the adjacent strips 12 are joined by the joiner 14 as shown in FIG. As shown, a helical tube 100 will be formed.

  In the following, examples or embodiments of the reinforcing member 10 of the present invention will be described on the premise of such a helical tube 100, and using them as necessary.

  As shown in FIG. 5, the reinforcing member 10 is used by being attached to the strip 12 of the spiral tube 100.

  The reinforcing member 10 includes a reinforcing member 52 and a connecting member 54. As shown in FIG. 6, the reinforcing members 52 adjacent to each other are connected to each other by connecting members 54 inserted into the respective longitudinal ends. Connected.

  The reinforcing material 52 is made of a metal such as steel or a synthetic resin such as hard vinyl chloride, and is formed with a predetermined width and thickness. The length in the longitudinal direction is 2000 mm, for example. As shown in FIG. 7, the reinforcing member 52 includes a bottom plate portion 56 extending in the horizontal direction, left and right side wall portions 58 formed by bending the width direction both sides of the bottom plate portion 56 upward, and the side wall portions 58. Left and right top plate portions 60 formed by bending the upper end edge slightly inward, and has a substantially trapezoidal cross section.

  Note that for convenience of explanation, the side of the inner surface 200a of the sewer pipe 200 is “upward”, and the opposite side is “downward”.

  The side wall portion 58 is formed in a tapered shape that is inclined outward from the bottom plate portion 56. The reason is that the reinforcing member 52 pushed between the ribs 18 of the strip 12 and the ribs 18 can smoothly spread the ribs 18 to the left and right, thereby easily attaching the reinforcing member 10 to the strip 12. It is for attaching.

  The horizontal distance between the upper end edge of one side wall portion 58 and the upper end edge of the other side wall portion 58, that is, the maximum length (maximum width) in the width direction of the reinforcing member 52 is substantially equal to the interval between the adjacent ribs 18. The same dimension is set, for example, 27 mm. That is, in a state where the reinforcing member 10 is attached to the strip 12, the upper end edge of the side wall portion 58 of the reinforcing member 52 comes into contact with each of the adjacent ribs 18 (see FIG. 5).

  Further, the vertical distance between the upper end edge and the lower end edge of the side wall part 58, that is, the length (height) of the reinforcing member 52 in the height direction is based on the vertical distance between the main body 16 and the second anchor part 22 in the strip 12. Is set to a slightly smaller dimension, for example, 14 mm. Further, the maximum width of the reinforcing member 52 is set to a dimension larger than the interval between the inner ends of the second anchor portions 22 adjacent to each other. That is, the reinforcing member 10 attached to the strip 12 is held in a space portion between the second anchor portion 22 and the main body 16 (see FIG. 5).

  As shown in FIG. 8, an easily variable portion is formed at the end of the reinforcing member 52 in the longitudinal direction. In this embodiment, the easily variable portions are the slits 62 and 64, and the slits 62 and 64 are formed at both ends in the longitudinal direction of the reinforcing material 52, respectively. For example, the top plate portions 60 at both ends in the longitudinal direction of the reinforcing material 52 are removed, and these become the slits 62. Further, three slits 64 are formed in the side plate portion 58 of the reinforcing member 52 with a predetermined interval in the longitudinal direction of the reinforcing member 52. The slit 64 has a shape such that the side plate portion 58 is notched downward from the upper edge of the slit 64, and its area is set larger toward the end of the reinforcing member 52. That is, the aperture ratio occupied by the slit 64 is set to increase as it goes toward the end of the reinforcing member 52.

  The connecting member 54 is made of a metal such as steel or a synthetic resin such as hard vinyl chloride, and is formed with a predetermined width and thickness, and the length in the longitudinal direction thereof is, for example, 150 mm. As shown in FIG. 9, the connecting member 54 has a bottom plate portion 66 extending in the horizontal direction, and left and right side wall portions 68 formed by bending both sides in the width direction of the bottom plate portion 66 upward. The shape and dimensions are appropriately set so as to be housed inside the reinforcing member 52.

  The side wall portion 68 is formed in a tapered shape that is inclined outward from the bottom plate portion 66, and in a state where the connection member 54 is inserted into the longitudinal end portion of the reinforcing material 52, the left and right side plate portions 58 of the reinforcing material 52 are arranged. Each of the left and right side plate portions 68 of the connection member 54 is along each. The horizontal distance between the upper end edge of one side wall 68 and the upper end edge of the other side wall 68, that is, the maximum length (maximum width) in the width direction of the connecting member 54 is, for example, 24 mm.

  Further, the vertical distance between the upper end edge and the lower end edge of the side wall portion 68, that is, the length (height) in the height direction of the connecting member 54 is set to a dimension slightly smaller than the height of the reinforcing member 52, For example, 11.5 mm.

  A method of forming the spiral tube 100 reinforced by the reinforcing member 10 on the inner surface 200a of the sewer pipe 200 will be described below.

  First, as shown in FIG. 10, the connecting member 54 is inserted into the longitudinal end portion of the reinforcing member 52 to constitute a unit member in which the reinforcing member 52 and the connecting member 54 are combined. Specifically, after one end portion of the connection member 54 is inserted into the longitudinal end portion of the reinforcing member 52, the bottom plate portion 56 of the overlapping reinforcing member 52 and the bottom plate portion 66 of the connecting member 54 are partially spot welded. To do.

  And the unit member which combined the reinforcing material 52 and the connection member 54 is connected, and the member 10 for reinforcement of desired length is formed. Specifically, the other end of the connecting member 54 having one end inserted into the end of the reinforcing member 52 is inserted into the end of the reinforcing member 52 of another unit member. As a result, the end portions in the longitudinal direction of the reinforcing material 52 are connected by the connecting member 54. Then, another unit member is connected in the same manner to the unit members connected to each other. This is repeated until the reinforcing member 10 having a desired length is formed.

  Next, the reinforcing member 10 is attached to the strip 12. Specifically, the rib 18 of the strip 12 is slightly expanded to the left and right, and the reinforcing member 10 is pushed in, for example, until the top plate portion 56 contacts the main body 16 of the strip 12. The reinforcing member 10 is accommodated between the two members. However, the reinforcing member 10 may be attached to the strip 12 at the manufacturing stage of the strip 12.

  Then, the strip 12 to which the reinforcing member 10 is attached is spirally wound along the inner surface 200a of the sewage pipe 200, and the side edges in the width direction of the adjacent strips 12 are joined by the joiner 14, and the spiral pipe 100 is joined. Form.

  Finally, the backing material 102 is filled between the inner surface 200a of the sewage pipe 200 and the spiral tube 100, and when the backing material 102 is cured, the operation is finished.

  Thus, in this embodiment, the reinforcing members 52 adjacent to each other are connected to each other by the connecting members 54 inserted into the respective end portions in the longitudinal direction. For this reason, the direction of the end portion in the longitudinal direction of the reinforcing member 52 is regulated by the connecting member 54 and is bent and deformed so that the end portion is directed toward the adjacent reinforcing member 52. In addition, since the misalignment that occurs when the end portion of the reinforcing member 52 is bent and deformed is absorbed by the insertion space between the reinforcing member 52 and the connecting member 54, the connecting member 54 may come out of the reinforcing member 52. Absent. That is, according to this embodiment, the longitudinal end portion of the reinforcing member 52 can be smoothly bent along the curved portion of the strip 12. Therefore, even if the strip 12 is spirally wound, the reinforcing member 52 can be appropriately attached to the strip 12 without the end in the longitudinal direction of the reinforcing member 52 being detached from the strip 12.

  Moreover, according to this embodiment, the difference in expansion / contraction between the strip 12 and the reinforcing member 10 due to the difference between the linear expansion coefficient of the strip 12 and the linear expansion of the reinforcing member 10 is also connected to the reinforcing member 52. It can be absorbed in the insertion space with the member 54. Therefore, even if there is a temperature change, an excessive force is not applied to the reinforcing member 10.

  Further, in this embodiment, the slits 62 and 64 are formed in the reinforcing member 52 as easily variable portions. For this reason, the reinforcing member 10 can be easily bent and deformed while maintaining a certain strength or higher.

  Furthermore, in this embodiment, when the connecting member 54 is inserted into the reinforcing member 52, the easily variable portions 62 and 64 are formed in the range where the reinforcing member 52 and the connecting member 54 overlap. For example, at the end portion in the longitudinal direction of the reinforcing material 52, the bottom plate portion 56 of the reinforcing material 52 and the bottom plate portion 66 of the connection member 54 inserted into the reinforcing material 52 overlap, and the side plate portion 58 of the reinforcing material 52 Since the side plate portion 68 of the connecting member 54 inserted into the reinforcing member 52 overlaps, the rigidity against the bending force of the strip increases accordingly, and it becomes difficult to bend along the curve of the strip 12. However, according to this embodiment, the easily variable portions 62 and 64 are formed in the range where the reinforcing member 52 and the connecting member 54 overlap, so that the longitudinal end portion of the reinforcing member 52 can be bent and deformed more easily. Can be made.

  In this embodiment, the side plate portion 58 of the reinforcing member 52 is formed with three slits 64 at a predetermined interval, and the three slits 64 approach the end of the reinforcing member 52. The area is set larger in order. Here, as described above, at the end portion in the longitudinal direction of the reinforcing member 52, the rigidity against the bending force of the strip is locally increased, but according to this embodiment, the aperture ratio occupied by the slit 64 is increased. Since it is set so that it goes to the edge part side of the reinforcing material 52, the rigidity of the reinforcing member 10 does not become discontinuous.

  In addition, in the above-mentioned Example, although the member 10 for reinforcement was used in order to reinforce the spiral pipe 100 which regenerates the aged sewer pipe 200, it does not need to be limited to this. For example, the reinforcing member 10 can be used to reinforce the spiral pipe 100 that protects the inner surface 200a of the newly installed sewer pipe 200.

  In the above-described embodiment, the strip 12 is spirally wound along the inner surface 200 a of the sewer pipe 200, and the edges in the width direction are joined to the joiner 14 to form the spiral pipe 100. It is not necessary to be limited to this. For example, the groove 24 is formed on one side edge of the strip 12, and the protrusion that can be fitted to the groove 24 is formed on the other edge of the strip 12, and the groove 24 and the protrusion of the strip 12 adjacent to each other are formed. The helical tube 100 may be formed by fitting them together and joining them together.

  Furthermore, in the above-described embodiment, the strip 12 is formed with three ribs 18, and the reinforcing member 10 is attached between each of the three ribs 18. Depending on the diameter of the 100 and the strength of the strip 12 itself, an appropriate number of reinforcing members 10 may be used so that the helical tube 100 can be properly reinforced.

  Furthermore, in the above-described embodiment, the reinforcing member 10 is attached between the ribs 18 of the strip 12, but is not limited thereto, and is attached to an appropriate position of the strip 12. Can do.

  Further, in the above-described embodiment, the connecting member 54 having the bottom plate portion 66 and the side plate portion 68 is inserted into the longitudinal end portion of the reinforcing member 52 having the bottom plate portion 56, the side plate portion 58, and the top plate portion 60. It was. However, these are only for smoothly bending the longitudinal end portion of the reinforcing member 52 along the curved portion of the strip 12, and in short, the connecting member 54 is provided at the longitudinal end portion of the reinforcing member 52. The shape of the reinforcing material 52 and the connecting member 54 is not particularly limited as long as the end portion can be bent so as to face the direction of the adjacent reinforcing material 52.

  In the above-described embodiment, when the helical tube 100 is reinforced by the reinforcing member 10, first, a unit member in which the reinforcing member 52 and the connecting member 54 are combined is configured, and the unit members are connected to each other. Although the reinforcing member 10 having a desired length is formed, it is not necessary to be limited to this.

  For example, first, one end portion of the connecting member 54 is inserted into the end portion of the reinforcing member 52, and the other end portion of the connecting member 54 is inserted into the end portion of another reinforcing member 52, so that the two reinforcing members 52 are attached. The ends of the two reinforcing members 52 connected to each other and the ends of the other reinforcing members 52 are connected in the same manner by the connecting member 54, and this forms the reinforcing member 10 having a desired length. By repeating until it does, you may form the reinforcement member 10 of desired length.

  With reference to FIGS. 11 and 12, in the reinforcing member 10 according to another embodiment of the present invention, the connecting member 54 is provided with a protrusion 70. In addition, the same number is attached | subjected about the part which is common in the member 10 for reinforcement shown in FIG. 1, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 11, a protruding portion 70 is formed on the bottom plate portion 66 of the connecting member 54. The protrusion 70 is a protrusion that protrudes downward from the bottom plate portion 66, and is formed, for example, by bending a part of the bottom plate portion 66 downward in a hollow shape.

  As shown in FIG. 12, the projecting portion 70 is provided at a substantially central portion in the longitudinal direction of the bottom plate portion 66, and when the longitudinal ends of the reinforcing material 52 are connected to each other by the connecting member 54, the reinforcement is provided. It will be arranged between the material 52 and the reinforcing material 52.

  For this reason, for example, even if the connecting member 54 inserted into the reinforcing member 52 further moves in the insertion direction, the end of the reinforcing member 52 and the protruding portion 70 of the connecting member 54 collide, thereby connecting the connecting member to the reinforcing member 52. The movement of 54 is restricted. Therefore, the connecting member 54 does not completely enter the reinforcing member 52, and workability is improved.

  In addition, as shown in FIG. 13, you may provide the protrusion part 72 in the baseplate part 56 of the reinforcing material 52. As shown in FIG. The protruding portion 72 is a protrusion protruding upward from the bottom plate portion 56, and is formed, for example, by bending a part of the bottom plate portion 56 upward in a protruding shape. The protrusions 70 are provided on both sides of the reinforcing member 52 in the longitudinal direction, and when the end portions in the longitudinal direction of the reinforcing member 52 are connected to each other by the connecting member 54, the connecting member inserted into this end portion. It will be disposed slightly inside 54. For this reason, for example, even if the connecting member 54 inserted into the reinforcing member 52 further moves in the inserting direction, the end of the connecting member 54 and the projecting portion 72 of the reinforcing member 52 collide, thereby connecting the connecting member to the reinforcing member 52 The movement of 54 is restricted.

  Further, a protruding portion 70 is formed by bending a part of the bottom plate portion 66 of the connecting member 54 downward in a hollow shape, and a protruding portion is formed by bending a part of the bottom plate portion 56 of the reinforcing member 52 upward in a protruding shape. Although the part 72 was formed, it is not necessary to be limited to this. If the movement of the connecting member 54 with respect to the reinforcing member 52 can be restricted, the shapes and arrangement positions of the protrusions 70 and 72 can be changed as appropriate.

  Furthermore, in each of the above-described embodiments, the side plate portion 58 of the reinforcing member 52 is formed with three slits (easily variable portions) 64 at a predetermined interval. The area is set to increase in order as it goes toward the end of the reinforcing member 52, but it is not necessary to be limited to this. This is only to prevent the rigidity of the reinforcing member 10 from becoming discontinuous. In short, the opening ratio occupied by the slit 64 may be set larger as it goes toward the end of the reinforcing member 52. That's fine. That is, although not shown, one slit having a substantially trapezoidal shape or a substantially triangular shape that expands toward the end of the reinforcing material 52 may be formed in the side plate portion 58 of the reinforcing material 52.

  Furthermore, although the easily inflection part was formed in the longitudinal direction edge part of the reinforcing material 52, it is not necessary to be limited to this, for example, as shown in FIG. An easily variable portion may be formed. For example, the easily variable portion is a slit 74 in which the side plate portion 68 is notched downward from the upper end edge, and three slits are formed at both ends in the longitudinal direction of the connecting member 54. The area of the connecting member 54 is set to increase gradually in the direction toward the end of the connecting member 54.

  Further, in each of the above-described embodiments, the easily variable portion is the slits 62, 64, 74 from which a part of the reinforcing member 52 or the connecting member 54 is removed, but it is not necessary to be limited to this. The easily variable parts 62, 64, and 74 may be configured in other forms. For example, as the easily variable portion, a concave groove or the like for thinning a part of the reinforcing member 52 or the connecting member 54 can be considered.

  Further, in each of the above-described embodiments, the reinforcing members 52 are connected to each other by inserting the connecting members 54 into the end portions of the adjacent reinforcing members 52 in the longitudinal direction. However, the present invention is not limited to this. . For example, although not shown, a connecting portion having a gage shape that can be inserted into the other end of the reinforcing member 52 is formed at one end of the reinforcing member 52, and the connecting portion of one adjacent reinforcing member 52 is formed. The reinforcing members 52 can be connected to each other by inserting them into the other end of the other reinforcing member 52. In this case, first, the reinforcing members 52 are connected to each other by inserting one end portion (connecting portion) of one reinforcing member 52 into the other end portion of the other reinforcing member 52. Then, the connecting portion of the other reinforcing member 52 is further inserted into the other end portion of another reinforcing member 52, and this is repeated to form the reinforcing member 10 having a desired length.

  Of course, also in the reinforcing member 10 in which the reinforcing members 52 are directly connected as described above, the reinforcing members 52 are inserted into each of the end portions in the longitudinal direction of the adjacent reinforcing members 52 described above. As with the reinforcing member 10 to which is connected, an easily variable portion may be formed, or a protruding portion may be formed. For example, although illustration is omitted, the easily variable portion is formed at one end of the reinforcing member 52, that is, the connecting portion, or the other end of the reinforcing member 52 into which the connecting portion is inserted. Although not shown, the projecting portion is formed by bending a part of the bottom plate portion 56 of the reinforcing material 52 downward into a hollow shape or bending upward into a protruding shape. The movement of the reinforcing material 54 is restricted.

  Note that the specific numerical values such as the diameter and height described above are merely examples, and can be appropriately changed as necessary.

DESCRIPTION OF SYMBOLS 10 ... Member for reinforcement of spiral tube 12 ... Strip 14 ... Joiner 18 ... Rib 20, 22 ... Anchor part 52 ... Reinforcement material 54 ... Connection member 62, 64, 74 ... Easily variable part 70, 72 ... Projection part 100 ... Spiral Pipe 200 ... sewer pipe

Claims (6)

Formed by winding a strip of the strip in a spiral shape having a rib formed at intervals, a reinforcing member of the spiral tube,
A bottom plate portion having a width smaller than the interval, two side wall portions rising from both ends of the bottom plate portion and extending outward, and two inwardly extending from the respective upper ends of the side wall portions and forming a gap therebetween A reinforcing member including a top plate , and
A connecting member including a bottom plate portion having a smaller width than the bottom plate portion of the reinforcing member and two side wall portions rising from both ends of the bottom plate portion and extending outward;
The height of the side wall portion of the connection member is set to a height that fits between the bottom plate portion and the top plate portion of the reinforcing material,
Longitudinal end portion of the connection by the inserting the connecting member reinforcement member to each other, respectively, the reinforcing member threaded旋管reinforcement adjacent. Comprises the easily inflection portion formed on at least one of the reinforcing member and the connection member are overlapped with each other ranges Oite the reinforcing member and the connecting member when the connecting member to the reinforcement member is inserted, The member for reinforcing a helical tube according to claim 1 . The member for reinforcing a helical tube according to claim 2 , wherein the easily bending portion is a slit. The member for reinforcing a helical tube according to claim 2 or 3, wherein the top plate portion is formed excluding the easily variable portion . The member for reinforcing a helical tube according to any one of claims 1 to 4 , further comprising a protrusion that restricts movement of the connecting member with respect to the reinforcing member. A spiral tube formed by spirally winding a strip of strips having ribs formed at intervals;
A bottom plate portion having a width smaller than the interval, two side wall portions rising from both ends of the bottom plate portion and extending outward, and two inwardly extending from the respective upper ends of the side wall portions and forming a gap therebetween A reinforcing member including a top plate, and
A connecting member including a bottom plate portion having a smaller width than the bottom plate portion of the reinforcing member and two side wall portions rising from both ends of the bottom plate portion and extending outward;
The height of the side wall portion of the connection member is set to a height that fits between the bottom plate portion and the top plate portion of the reinforcing material,
A spiral tube in which the reinforcing members are connected to each other by inserting the reinforcing member into the interval between the ribs of the strip and inserting a connecting member into each of the longitudinal ends of the adjacent reinforcing members.

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