TWI479098B - Method for linking segments and linking tool - Google Patents

Description

Ring connecting method and connecting device

The present invention relates to a method and a connecting device for a ring piece as an assembly unit of a tube, wherein the tube is formed by an inner panel constituting an inner circumferential surface and two sides extending in a circumferential direction of the inner panel The side plates that are perpendicular to the edge portion of the respective edge portions and the end plates that are vertically erected at the respective edge portions of the inner panel that extend toward the tube length direction are integrally formed.

When the pipeline buried in the underground waterway pipeline is old and decayed, it is not necessary to excavate the pipeline from the underground, and the inner lining method for repairing the pipeline on the inner circumferential surface has been proposed. And for actual operation.

The pipe lining method is, for example, inverting a pipe lining material composed of a tubular resin absorbent material impregnated with an uncured thermosetting resin by fluid pressure, and inserting it into a pipe and maintaining it by fluid pressure. In a state where the tube lining material is pressed against the inner peripheral wall of the pipe, the pipe inner lining material is heated to harden the thermosetting resin impregnated therein, thereby forming a plastic pipe in the pipe to repair the pipe. Construction method.

Further, for a large-diameter pipe, a method of repairing a pipe using the following tube is also known (Patent Documents 1 and 2), that is, an inner panel constituting an inner peripheral surface is erected by plastic The ring piece integrally formed on the outer wall of the inner periphery of the inner panel is connected to the circumferential direction to assemble the pipe unit, and the pipe joint member connects the pipe unit to the pipe which is formed in the pipe length direction.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-286742

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2005-299711

When the ring piece described in Patent Documents 1 and 2 is connected to the pipe length direction, since the ring piece is connected by using a coupling provided with a screw, it is necessary to have a screw locking tool, and the screw locking time is time consuming. Further, in a small space, the screw may not be rotated, and even if the screw can be locked, the burden on the worker is large due to the troublesome repeated work, and the working time is prolonged.

The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a connecting method and a connecting device capable of efficiently connecting a ring piece of a ring piece in a short time and in a short time.

The present invention is an inner panel having an inner peripheral surface; and a side plate having an insertion hole perpendicular to the edge portion extending on both sides of the inner panel in the circumferential direction; and a method for connecting a ring plate for a tube for a tube which is formed by integrally forming an inner plate having an insertion hole having a smaller hole than the insertion hole of the side plate, and a connection method between the side plates and the inner panel a protruding portion having a protruding portion that can be inserted into the insertion hole of the inner plate at the tip end, and a tubular connecting pin half body formed with the first protruding portion and the second protruding portion and capable of being inserted through the side plate a hollow connecting pin; the first protruding portion is located at a distance from the end of the protruding portion with a distance between the opposing faces of the side plate and the inner plate, and extends toward the circumferential direction on the outer peripheral surface having the abutting surface The second projection is at a position separated from the contact surface of the first projection by a distance of substantially twice the thickness in the tube length direction of the side plate, and is formed on the outer peripheral surface having the contact surface toward the circumference. Extending direction; the connecting pin, Inserting the insertion hole of the side plate of one of the ring pieces, inserting the protruding portion of the front end into the insertion hole of the inner plate, and pressing the abutting surface of the first protrusion to the inner side surface of the side plate to press the separation pin The connecting pin is separated into a connecting pin half in the hollow portion of the connecting pin, and the separated connecting pin halves are press-expanded by the separating pin, so that the connecting pin halves are pressed against the side plate and the inner plate. Each of the insertion holes is configured to fix the coupling pin to the one ring piece, and the other end opposite to the insertion side of the coupling pin that has been separated into the coupling pin half is inserted into the side plate of the other ring piece. The through hole is inserted so that the abutting surface of the second projection is pressed against the inner side surface of the side plate, and the one of the one and the other ring piece are connected to the tube length direction.

Moreover, the present invention is for an inner panel that constitutes an inner peripheral surface, and an insertion hole that is erected perpendicularly to the edge portion on both sides of the inner panel that extend in the circumferential direction. a side plate; and an inner plate which is vertically disposed between the side plates and the inner panel, and has an insertion hole having a smaller opening than the insertion hole of the side plate, and the ring plate for forming the tube is integrally formed in the tube length direction The connecting device is characterized in that it has a hollow connecting pin and a separating pin, and the hollow connecting pin has a protruding portion that can be inserted into the insertion hole of the inner plate at the front end, and the first protruding portion and the second protrusion are formed The tubular connecting pin half of the portion is configured to be inserted into the insertion hole of the side plate; wherein the first protrusion is spaced apart from the opposite end of the side plate and the inner plate from the end of the protruding portion The position of the distance extends toward the circumferential direction on the outer peripheral surface having the abutting surface, wherein the second protrusion is substantially the thickness of the tube in the longitudinal direction of the side plate from the contact surface of the first protrusion 2 times the distance of the position, in The peripheral surface of the contact surface extends in the circumferential direction; the separation pin is press-fitted into the hollow portion of the coupling pin to separate the coupling pin into the coupling pin half, and the separated coupling pins are separated The half body pressure is expanded, and each of the coupling pin halves is press-contacted to each of the insertion holes of the side plate and the inner plate, and the coupling pin is inserted from the insertion hole of the side plate of one of the ring pieces, and the protruding portion of the front end is inserted. The insertion hole of the inner plate is pressed against the inner surface of the side plate, and the separation pin is pressed into the hollow portion of the coupling pin, so that the coupling pin is fixed to the ring of the one side. Inserting the other end of the side opposite to the insertion side of the coupling pin that has been separated into the coupling pin half into the insertion hole of the side plate of the other ring piece, and pressing the abutting surface of the second protrusion to the same The inner side surface of the side plate is connected to the other one of the ring pieces in the tube length direction.

According to the present invention, the connecting pin inserted into the insertion hole of the side plate and the inner plate of the ring piece is separated into the connecting pin half by the separating pin, and the connecting pin half is inserted by the separating pin pair. The pressure-bonding of the hole fixes the connecting pin to one of the ring pieces, and the other end of the connecting pin is caulked to the other ring piece so that the two ring pieces can be coupled to the tube length direction, so that the screw is not used. Since the locking is combined, the assembly work of the ring piece can be performed in a narrow place where the wrist cannot be rotated, and when the assembly work is performed in a wide area, the assembly work can be simplified, the time can be shortened, and the time can be saved. Therefore, when the assembly of the tube is used to reinforce the work of the tube, it is possible to obtain an excellent effect of shortening the construction period, reducing the burden on the operator, and saving labor for the person.

The invention will be described in detail below on the basis of embodiments shown in the accompanying drawings.

[Examples]

In Fig. 1, a ring piece 1 as a unit assembly member of a tube is shown. The ring piece 1 is made of a plastic material: an inner panel 101 constituting an inner circumferential surface of the tube; and a respective edge portion on both sides of the inner panel 101 extending in the circumferential direction and standing perpendicularly to the edge portion The side plates 102 and 103 and the block members 104 and 105 which are formed integrally with the respective edge portions of the inner panel 101 extending toward the tube length and which are perpendicular to the edge portion are integrally formed. The side plates 102 and 103 and the end plates 104 and 105 of the ring piece 1 are outer wall plates that surround the periphery of the inner panel 101 from the square at the same height. Further, the side plates 102 and 103 of the ring piece 1 have the same size value in the width (thickness) in the tube length direction. The ring piece has a predetermined angle which divides the circumference into a plurality of equal parts, for example, an arc shape having a degree of 72 degrees which is bent into 5 equal parts, but is not limited to the arc type to the fan shape, and may be designed accordingly. The cross-sectional shape of the pipe, or the size thereof, or the repairing portion of the pipe is formed in a rectangular parallelepiped or a right angle, and the shape is curved by adding an arc.

In order to reinforce the mechanical strength of the ring piece 1, a plurality of inner plates (reinforcing plates) 106, 107 which are the same as the side plates are provided on the inner side of the side plates 102, 103, perpendicular to the upper surface of the inner panel 101. Further, on the inner side surfaces of the side plates 102 and 103 and the side surfaces of the inner plates 106 and 107, the plurality of convex plates 103b, 106b, and 107b which are formed to prevent the respective deformation from protruding on the side surfaces are formed at a plurality of portions, and the rib structure is formed to increase the ring. The strength of the sheet 1.

In the side plates 102 and 103, circular or substantially circular insertion holes 102a and 103a for connecting the ring members of the ring pieces to be connected in the longitudinal direction of the tube are formed at equal intervals in the circumferential direction. Further, in the inner panel 106, a plurality of circular to substantially circular insertions for inserting the coupling members are formed at positions corresponding to the insertion holes 102a and 103a of the side plates 102 and 103, respectively, as viewed in the tube length direction. Through hole 106a. The inner diameter of the insertion hole 106a is smaller than the outer diameter of the insertion holes 102a, 103a as will be described later. Further, in the inner panel 107, a plurality of cutout portions 107a are formed at corresponding positions corresponding to the insertion holes 102a and 103a of the side plates 102 and 103, respectively.

The inner panel 101, the side panels 102, 103, the end plates 104, 105, and the inner panels 106, 107 functioning as reinforcing plates, and the convex plates are all transparent, translucent, or opaque. It is formed into a single body using conventional forming techniques.

At the end portions on the end plates 104 and 105 side of the inner panel 101, a plurality of rectangular opening portions 101a for performing an operation of connecting the ring pieces 1 to each other in the circumferential direction from the inside are formed.

As shown in Fig. 2, the ring piece 1 is brought into close contact with the outer side faces of the end plates 104 and 105 of the ring pieces 1, and the bolts 6 are inserted from the opening portions 101a of the inner panel 101 into the insertion holes 104a and 105a. The nut 7 is coupled to the circumferential direction by locking the end plates 104 and 105. The end plate 104 and the recesses 104b and 104c are formed over the entire length of the tube, and the end plates 105 and the projections 105b and 105c are formed over the entire length of the tube, and are fitted to the recesses 104b. 104c, so the work of positioning and adhering the two ring pieces at the time of joining can be easily performed. Further, by applying a sealing material (not shown) to each fitting portion in advance, the watertightness (leakage resistance) of the joint portion can be improved.

When the connection of the ring piece 1 in the circumferential direction is completed, each of the openings 101a is sealed by a cover (not shown) or the like. At this time, the lower surface of the cover is continuous with the lower surface of each inner panel 101 so that the inner surface (the surface facing the center of the tube) of the inner panel 101 becomes a uniform surface.

The connection of the ring pieces 1 in the circumferential direction is such that the inner faces of the inner panels 101 are uniform surfaces, and the outer faces of the side plates 102 and 103 are connected to each other. When the ring pieces 1 are sequentially connected to the circumferential direction, the pipe body 10 (hereinafter referred to as a pipe unit) having a predetermined short length in a closed loop shape as shown in Fig. 3 can be assembled. The tube unit 10 is formed to have a predetermined width perpendicular to the tube length direction X. The shape obtained by the web D when the round tube is cut into a ring shape has an outer diameter which is smaller than the inner diameter of the pipe to be repaired. The ring piece 1 is a member obtained when the pipe unit 10 is divided into a plurality of radial directions R (5 equal parts in the illustrated example).

Moreover, in FIG. 3, the inner panel 101, the side plates 102 and 103, the end plates 104 and 105 which are the main structural members of the ring piece are illustrated, and the reinforcing structures of the inner plates 106, 107, the convex plates, and the like are The insertion holes 102a and 103a and the like are omitted in order to avoid cumbersome.

4 and 5 are views showing a coupling 20 for connecting the ring piece 1 or the tube unit 10 to the tube length direction. The connecting device 20 is a connecting pin 21 having a hollow portion having a structure in which the connecting pin halves 22 and 23 can be stacked, and a separating pin 24 for separating the connecting pin 21 into the connecting pin halves 22 and 23. Composition. The connecting pin 21 is integrally molded of plastic, and as shown in Fig. 5(a), the connecting pin halves 22 and 23 are connected by the thin portions 22a and 23a. As shown in Fig. 5(b), the connecting pin 21 is folded and joined to the thin portions 22a and 23a to have the overlapping connecting pin halves 22, 23 as shown in Fig. 4(a). Constructed tubular pin.

As shown in FIGS. 4(b) and 4(c), the joint pin half 22 has a thin portion 22a that is a joint portion that joins the joint pin half 23, and a portion that is taken from the tube axis x1. The semi-tubular portion 22c having a shape obtained by cutting the circular tube in the horizontal direction, and the semi-tubular protruding portion 22b having a smaller outer diameter protruding from the semi-tubular portion 22c toward the distal end, and the outer peripheral surface of the semi-tubular portion 22c The first protrusion 22d and the second protrusion 22e and the inclined portion 22f extending in the circumferential direction, and the first protrusion 22d and the second protrusion The mutually opposing faces of the starting portions become vertical faces, and the opposite portions are obliquely continuous to the semi-tubular portion 22c.

The connecting pin half 23 has a shape that is bilaterally symmetrical with the connecting pin half 22 as seen in Fig. 5(a), and has a thin portion 22a, a protruding portion 22b, and a semi-tubular portion 22c which are respectively connected to the connecting pin half 22, The first projection 22d, the second projection 22e, and the inclined portion 22f correspond to the thin portion 23a, the protruding portion 23b, the semi-tubular portion 23c, the first projection portion 23d, the second projection portion 23e, and the inclined portion 23f.

Since the joint pin halves 22 and 23 have a shape which is cut horizontally from the horizontal plane passing through the circular tube axis to the upper portion (or the lower portion), the joint pin half is shown as shown in Fig. 4(a). After the bodies 22 and 23 are superposed, a tubular connecting pin 21 having a slightly flattened elliptical cross section can be obtained.

Further, when the coupling pin halves 22 and 23 are overlapped, as shown in Fig. 4(c), a hollow portion 21a having a small inner diameter is formed inside the coupling pin, and a larger diameter than the inner diameter is formed. In the hollow portion 21b, the thickness of the connecting pin halves 22, 23 on the end side (right side) of the connecting pin is made thinner from the first projections 22d and 23d, so that the inner diameter is larger than the hollow portion 21b. Larger hollow portion 21c.

The separation pin 24 is a cylindrical pin having a conical tip end portion 24a, a cylindrical distal end portion 24b, a cylindrical central portion 24c, and a cylindrical rear end portion 24d.

The size of the joint pin 21, the split pin 24, and the loop piece 1 obtained by laminating the joint pin halves 22, 23 is shown in Fig. 6.

Straight through hole 103a formed by the side plate 103 of the ring piece 1 The diameter D2 is larger than the diameter D1 of the circular insertion hole 106a adjacent to the inner plate 106 of the side plate 103, and the protruding portion 22b, 23b of the coupling pin 21 is a through hole having a predetermined gap through the inner plate 106. Further, the semi-tubular portions 22c and 23c have a size in which the substantially the same gap can pass through the insertion hole 103a of the side plate 103. The first projections 22d and 23d of the joint pin 21 are inclined on the insertion side (left side), and have a height (protrusion amount) through which the through hole 103a can pass through the strong pressure coupling pin by elasticity. Further, the second projections 22e and 23e of the coupling pin 21 have the same size as the left and right symmetry of the projections 22d and 23d.

The distance t1 from the interface S1 between the protruding portions 22b and 23b of the coupling pin 21 and the semi-tubular portions 22c and 23c to the vertical surface S2 of the first projections 22d and 23d is substantially equal to the side plate 103 and the inside of the ring piece 1. The distance between the opposing faces of the plate 106, the distance t3 between the first projections 22d and 23d and the opposing vertical faces S2 and S3 of the second projections 22e and 23e is the side plate 103 of the ring piece 1 (or the side plate 102). ) is approximately twice the thickness t2 in the direction of the tube length.

The outer diameters p1, p3, and p2 of the front end portion 24b, the central portion 24c, and the rear end portion 24d of the separation pin 24 have a relationship of p3 > p2 > p1.

In a state in which the coupling pin halves 22 and 23 are overlapped, the center portion 24c of the separation pin 24 has a size that can be accommodated in the hollow portion 21c of the coupling pin 21, and cannot be inserted into the hollow portion 21b. The distal end portion 24b of the separation pin 21 also has a size that cannot be inserted into the hollow portion 21a of the coupling pin 21. However, when the pressure application is pressed into the separation pin 24, the central portion 24c of the separation pin 24 is pressed into the hollow portion 21b of the coupling pin, and the front end portion 24b of the separation pin 24 is also set to be pressed. The size of the hollow portion 21a that enters the joint pin. Further, the center portion 24c of the separation pin 24 is press-fitted into the hollow portion 21b of the coupling pin, and when the front end portion 24b of the separation pin 24 is pressed into the hollow portion 21a of the coupling pin, the coupling pin 21 is pressed and expanded. The joint portions 22a and 23a of the joint pin are separated and separated into the joint pin halves 22 and 23, and the separated joint pin halves 22 and 23 are oriented toward the side plate 103 and the inner panel of the ring piece 1 by the separation pin 24. Each of the insertion holes 103a and 106a of the 106 is crimped.

Next, a method of joining the ring piece to the pipe length direction using the coupling member configured as described above will be described.

As shown in Fig. 4 (a) and (c), the connecting pin 21 is in a state in which the connecting pin halves 22 and 23 are overlapped and the separating pin 24 is housed in the connecting pin 21, as shown in Fig. 7 (a). ), the insertion hole 103a to be inserted into the side plate 103 of one ring piece 1 is shown.

Since the semi-tubular portions 22c and 23c of the joint pin 21 can pass through the insertion holes 103a of the side plates 103 of the ring piece 1, and the protruding portions 22b and 23b can pass through the insertion holes 106a of the inner plate 106, the joint pins, such as 8(a) is inserted into each of the insertion holes 103a and 106a with a predetermined gap. Further, since the insertion side (left side) of the first projections 22d and 23d of the coupling pin 21 is inclined, as long as the separation pin is strongly pressed, as shown in Fig. 8(b), the first projections 22d and 23d are connected by the pins. The elasticity passes through the insertion hole 103a. At this time, the distance (t1) from the interface S1 between the protruding portions 22b and 23b and the semi-tubular portions 22c and 23c to the vertical surface S2 of the first projections 22d and 23d is The phase is equal to the distance between the opposing faces of the side plate 103 and the inner plate 106. Therefore, the interface S1 abuts against the inner side surface of the inner plate 106, and the vertical surface S2 abuts against the inner side surface of the side plate 103.

In this state, as shown in Fig. 8 (c) and (d), when the rear end portion 24d of the separation pin 24 is press-fitted, the central portion 24c of the separation pin 24 is press-fitted into the hollow portion 21b of the coupling pin. When the distal end portion 24b of the separating pin is press-fitted into the hollow portion 21a of the connecting pin, the connecting pin is opened, and the connecting portions 22a and 23a are pulled apart to separate the connecting pin halves 22 and 23. Further, the separated coupling pin halves 22, 23 are press-expanded by the separating pin 24 so that the protruding portions 22b, 23b of the coupling pin are crimped to the insertion holes 106a of the inner panel 106, and the semi-tubular portion 22c thereof And 23c is crimped to the insertion hole 103a of the side plate 103. Thereby, the joint pin is fixed to the ring piece 1. At this time, since the interface S1 of the semi-tubular portions 22c and 23c is pressed against the inner side surface of the inner panel 106, and the vertical surface S2 of the first projections 22d and 23d is pressed against the inner side surface of the side plate 103, The fixing of the connecting pin to the ring piece can be made secure, and the connecting pin can be prevented from falling off the ring piece. This state is also illustrated in Figure 7(b).

Next, as shown in Fig. 8 (e) and (f), the other end opposite to the side on which the coupling pin of the coupling pin halves 22 and 23 is separated is inserted into the side plate 102 of the other ring piece 1'. The insertion hole 102a. Since the joint pin halves 22 and 23 are separated, they can be bent toward the inside, so that they can be easily inserted. The side plate 102 is an inclined surface that has passed through the second projections 22e and 23e, and the joint pin 21 and the side plate 102 of the ring piece 1' are caulked and fixed. At this time, since the distance between the vertical faces S2 and S3 of the first projection and the second projection facing each other is substantially twice the thickness of the side plate 103 (102), the side plate 102 of the ring piece 1' is It is fixed in a state of being pressed between the side plate 103 of the ring piece 1 and the vertical surface S3 of the second protrusions 22e and 23e. Further, the second projections 22e and 23e prevent the loop piece 1' from coming off the coupling pin. As described above, since the ring piece 1' is fixed to the joint pin, the ring pieces 1 and 1' can be firmly coupled to the pipe length direction.

Fig. 9 (a) and (b) show the connected state of the ring pieces 1, 1' connected by the connecting device 20 in plan view from above.

Further, the connecting pin may have a polygonal cross section and may have a polygonal shape such as a regular hexagon. At this time, the shape of the insertion hole of the side plate and the inner plate of the ring piece is also formed into a corresponding shape in advance. Further, the first and second projections of the coupling pin may be formed over the entire circumferential direction of the coupling pin or may be formed discontinuously in the circumferential direction.

As shown in FIG. 1, the insertion hole for the connection piece of the ring piece is formed in plural along the circumferential direction of the side plate and the inner plate, so that the coupling piece 20 is inserted into the predetermined number among the plurality of insertion holes. The insertion hole is used to connect the ring piece in the tube length direction by the connecting piece. However, since the connection of the loop piece by the joint 20 is performed by the joint with a short clip, the joint strength is weak. Therefore, as disclosed in Japanese Laid-Open Patent Publication No. 2005-299711, a connecting rod extending across a wide width of the ring piece in the length direction of the tube is inserted into the insertion hole of the ring piece, and one end thereof is fixed to the other ring. The other end of the connecting rod of the sheet is coupled to fix the connecting rod to the ring piece, and the interposing connecting rod connects the ring piece and the other ring piece to the tube length direction. This status is shown in Figure 10.

In Fig. 10, the ring pieces 1, 1', 1" are partially joined by the above-mentioned connecting device 20. Further, the metal fixing nut 32 is inserted into the side plate 103 of the ring piece 1, and the ring. The side plate 102 of the sheet 1' is screwed into the fixing nut 32 by the metal bolt 33 sandwiching the inner plate 106 of the ring piece 1, so that the fixing nut 32 is fixed to the ring piece 1.

The metal connecting rod 31 extending across the side plates 102, 103 of the ring piece has a threaded portion 31a at one end of the shaft portion 31b, and a nut portion 31c having a thread 31d inside.

The connecting rod 31 is passed through the insertion holes of the side plate and the inner plate of the ring piece 1', and the threaded portion 31a of the connecting rod 31 is screwed by the portion of the rotating nut portion 31c exposed from the side plate 103 of the ring piece 1'. The fixing nut 32 is locked. When the connecting rod 31 is screwed to the end portion on the insertion side of the nut portion 31, the connecting rod 31 is fixed to the inner sheet 106, and the connecting rod 31 is fixed to the ring piece 1', and the ring piece 1' is made by the connecting rod 31. It is connected in a state of being locked to the ring piece 1. In this case, since the nut portion 31c of the connecting rod 31 located in the ring piece 1' functions as a fixing nut 32 that is fixed to the ring piece 1, the other connecting rod 31 can be used in the same manner. The sheet 1" is connected to the ring piece 1', and is repeatedly applied in the same manner, and the plurality of ring pieces can be sequentially connected to the tube length direction by interposing the connecting rod.

In the following, a method of using a ring piece to regenerate a pipe is described.

First, as shown in Fig. 11, the ring piece 1 is carried into the existing pipe 41 through the manhole well 40, and then the ring piece 1 is sequentially connected to the circumferential direction as shown in Fig. 2 to be assembled into a pipe. Unit 10.

Next, the tube unit 10 is assembled in the same manner, and the assembled tube unit 10 is connected to the tube length direction. The connection of the tube unit 10 is performed by connecting the respective ring pieces 1 of the tube unit 10 using the above-described coupling 20 and/or the connecting rod 31.

As described above, the tube unit 10 can be sequentially connected to the tube length direction in the existing tube 41, whereby the tube 42 can be laid in the existing tube 41. This state is also illustrated in Figure 12. In the same manner as in the third embodiment, only the main parts are illustrated in the same manner as in the third embodiment, and the connection means in the pipe length direction such as the connecting device and the connecting rod or the connecting means in the circumferential direction are omitted in order to avoid nuisance.

Since the gap 43 is formed between the outer circumference of the tube 42 and the inner wall surface of the existing tube 41, a filler such as a grout is filled here, and the tube is integrated with the existing tube. Moreover, in the embodiment, the end plates of the ring members of the tube unit 10 are assembled in an offset manner with the end plates of the ring pieces of the other tube unit, but the end plates may be assembled in an aligned manner. . Fig. 9 is an illustration of the case where the end plates of the ring piece are assembled in an aligned manner.

1, 1'‧‧‧ ring film

10‧‧‧ tube unit

20‧‧‧Links

21‧‧‧Links

22, 23‧‧‧Link pin half

22c‧‧‧Half-tubular

22d, 23d‧‧‧1st protrusion

22e, 23e‧‧‧2nd protrusion

22f, 23f‧‧‧ inclined section

24‧‧‧Distribution pin

31‧‧‧Links

41‧‧‧Setting

42‧‧‧More tube

102, 103‧‧‧ side panels

102a, 103a‧‧‧ inserted through hole

106‧‧‧Internal board

The first drawing is a perspective view in which a part of the outline configuration of the ring piece is omitted and partially broken.

Fig. 2 is a vertical sectional view showing the two ring pieces observed by vertically cutting the two ring pieces connected in the circumferential direction.

Fig. 3 is a perspective view of the pipe unit when the ring piece is connected to the circumferential direction to constitute a pipe unit.

Fig. 4(a) is a perspective view of the coupling device; (b) is a perspective view of the coupling member; (c) is a longitudinal sectional view of the coupling device.

Fig. 5(a) is a side view showing the connecting device when the connecting pin half is horizontally unfolded, and Fig. 5(b) is a side view showing the connecting device in which the connecting pin half is folded and can be overlapped.

Fig. 6 is a cross-sectional view showing the dimensions of the joint pin, the split pin, the ring side plate, and the inner plate.

Fig. 7(a) is a plan view showing a state in which the coupling member is inserted into the ring piece, and Fig. 7(b) is a plan view showing the coupling member being fixed to the ring piece.

Fig. 8(a) is a cross-sectional view showing the insertion pin inserted in front of the inner plate of the ring piece.

Fig. 8(b) is a cross-sectional view showing the state in which the coupling pin is inserted into the insertion hole of the inner plate of the ring piece.

Fig. 8(c) is a cross-sectional view showing a state in which the separation pin is press-fitted to separate the coupling pin into the coupling pin half.

Fig. 8(d) is a cross-sectional view showing the separation pin being further pressed.

Fig. 8(e) is a cross-sectional view of the insertion hole to be inserted into the side plate of the other ring piece.

Fig. 8(f) is a cross-sectional view showing the connection of two ring pieces by a connecting pin.

Fig. 9(a) is a plan view showing a state in which two ring pieces are to be joined to each other, and (b) is a plan view in which two ring pieces are connected.

Fig. 10 is a cross-sectional view showing the circular arc of the ring passing through the center of each insertion hole when the interposing link and the connecting rod are connected to the tube length direction.

Fig. 11 is an explanatory view showing a state in which a regenerative tube composed of a ring piece is laid in a pipe.

Figure 12 is a perspective view showing the appearance of a tube which has been laid in an existing tube.

1, 1’. . . Ring piece

22c. . . Semi-tubular part

22d, 23d. . . First protrusion

22e, 23e. . . Second protrusion

22f, 23f. . . Inclined portion

23c. . . Semi-tubular part

24c. . . Central department

24d. . . Back end

102, 103. . . Side panel

102a, 103a. . . Insert hole

106. . . Internal board

106a. . . Insert hole

S3. . . Vertical surface

Claims (11)

A method for joining a ring piece for a tube for a tube is formed by: an inner panel constituting an inner peripheral surface; and an opening portion which is perpendicular to the edge portion on both sides of the inner panel extending in the circumferential direction a side plate of the hole; and a connection method of the ring plate for the tube which is formed by integrally forming the inner plate of the insertion hole having a smaller hole than the insertion hole of the side plate between the side plates and the inner panel It is characterized in that it is prepared to have a protruding portion that can be inserted into the insertion hole of the inner plate at the tip end, and is composed of a tubular connecting pin half body in which the first protruding portion and the second protruding portion are formed and can be inserted. a hollow connecting pin of the insertion hole of the side plate; the first protrusion is at a position separated from a distal end of the protruding portion by a distance between the opposing faces of the side plate and the inner plate, and has a periphery of the abutting surface The surface of the second protrusion is formed at a position that is substantially twice the thickness of the tube in the longitudinal direction of the side plate from the contact surface of the first protrusion, and has an abutting surface. The outer peripheral surface is extended toward the circumference Inserting the connecting pin from the insertion hole of the side plate of one of the ring pieces, inserting the protruding portion of the front end into the insertion hole of the inner plate, and pressing the abutting surface of the first protruding portion against the side plate The inner side surface presses the separation pin into the hollow portion of the coupling pin to separate the coupling pin into the coupling pin half, and the separated connecting pin halves are expanded by the separating pin to make each connecting pin The half body is crimped to each of the insertion holes of the side plate and the inner plate, whereby the coupling pin is fixed to the one ring piece so as to be opposite to the insertion side of the coupling pin that has been separated into the coupling pin half. The other end is inserted into the insertion hole of the side plate of the other ring piece, and the abutting surface of the second protrusion is pressed against the inner side surface of the side plate, and the one ring and the other ring piece are connected to the pipe length direction. The method for joining a ring sheet for a regenerating tube according to the first aspect of the invention, wherein the separating pin has a large sectional area at a central portion, and is formed in a connecting pin in a state in which the connecting pin half is overlapped. The hollow portion accommodating the central portion of the separation pin is separated from the accommodating hollow portion by the central portion, and the coupling pin is separated into a coupling pin half. The method for joining a ring piece for a tube for a tube according to the first or second aspect, wherein the separating pin has a small cross-sectional area at a front end portion thereof, and the front end portion of the separating pin is a protruding portion that is inserted into a front end of the connecting pin. Hollow part. The method of joining the ring segments for a tube for a tube according to claim 1 or 2, wherein the insertion holes are formed in a plurality of circumferential directions along the circumferential direction of the side plates and the inner plates, and the coupling pins are inserted into the plurality of insertions. A predetermined number of insertion holes in the holes are connected by the connecting pins in the tube length direction. The method of joining a ring sheet for a tube for a tube according to claim 4, wherein the connecting rod extending from the width of the tube extending across the length of the tube is inserted into a plurality of insertion holes of the ring sheet. a predetermined number of insertion holes, and one end thereof is coupled to the other end of the connecting rod fixed to the other ring piece, the connecting rod is fixed to the ring piece, and the ring connecting the rod and the other ring The piece is connected to the length of the tube. A coupling device for: an inner panel constituting an inner circumferential surface; and a respective edge portion on the both sides of the inner panel extending in the circumferential direction and the edge portion a side plate having a through hole vertically formed; and an inner plate vertically extending from the side plate and having an insertion hole having a smaller hole than the insertion hole of the side plate, and integrally formed The connector for connecting the tube for the tube is connected to the connector in the longitudinal direction of the tube, and has a hollow connecting pin and a separating pin, and the hollow connecting pin has a protruding portion at the front end that can be inserted into the insertion hole of the inner plate, and is An insertion hole formed by a tubular connecting pin half body having a first protrusion and a second protrusion and capable of being inserted into the side plate; wherein the first protrusion is spaced apart from the terminal end of the protrusion The position of the distance between the opposing faces of the side plate and the inner plate extends in the circumferential direction on the outer peripheral surface having the abutting surface; wherein the second protruding portion is from the abutting surface of the first protruding portion a position at which the distance between the longitudinal direction of the side plate of the side plate is substantially twice as large as the circumferential surface of the abutting surface is extended in the circumferential direction; the separation pin is pressed into the hollow portion of the connecting pin Separate the joint pin into Forming a pin half, and expanding the separated connecting pin halves to press the connecting pin halves to the insertion holes of the side plate and the inner plate, so that the connecting pin is from one ring piece The insertion hole of the side plate is inserted, the protruding portion of the front end is inserted into the insertion hole of the inner plate, and the abutting surface of the first protrusion is pressed against the inner side surface of the side plate, so that the separation pin faces the hollow of the connecting pin. When the portion is press-fitted, the connecting pin is fixed to the one ring piece, and the other end opposite to the insertion side of the connecting pin that has been separated into the connecting pin half body is inserted into the insertion hole of the side plate of the other ring piece. Abutting the abutting surface of the second protrusion to the inner side of the side plate The one ring and the other ring piece are connected to the tube length direction, and the joint pin half body is detachably coupled to the insertion side end portion. The connector according to claim 6, wherein the abutting surfaces of the first and second protrusions are vertical surfaces. The coupling device according to claim 6 or 7, wherein a portion of the first and second projections opposite to the abutting surface is inclined and continuous with an outer circumferential surface of the coupling pin. The coupling device according to claim 6 or 7, wherein the first and second projections are formed in the entire circumferential direction of the coupling pin. The coupling device according to claim 6 or 7, wherein the separation pin has a large sectional area at a central portion, and is formed in the coupling pin in a state in which the coupling pin half is superposed to accommodate the separation. The hollow portion having a size at the center of the pin is separated from the accommodating hollow portion by the central portion, and the connecting pin is separated into a connecting pin half. The coupling device according to claim 6 or 7, wherein the separation pin has a small sectional area at a front end portion thereof.