JP6068190B2 - End treatment method for lining material and diameter expansion device used therefor - Google Patents

Description

  The present invention relates to an end processing method for sealing an end portion of a lining material lined in a pipeline, and a diameter expanding device used therefor.

  Conventionally, a lining material has been attached and lined for the purpose of repair or reinforcement to pipelines that are buried almost horizontally in the ground, such as gas pipes, water supply pipes, and sewer pipes. . End treatment for preventing fluid from entering between the end of the lining material and the inner surface of the pipe line and preventing fluid from entering the inside of the lining material from the end surface of the lining material. Is given.

  As an example of the edge treatment of the lining material, a seal member such as rubber packing is arranged inside the edge of the lining material, and then a metal ring member is arranged inside the seal member to expand the diameter of the ring member. By doing so, a method of sealing the end of the lining material is known (see, for example, Patent Documents 1 and 2). In Patent Documents 1 and 2, the ring member is constituted by two half-cylinders, but may be constituted by one arcuate plate formed in a C-shape.

  In Patent Document 1, a turnbuckle is installed on the inner peripheral surface of the ring member so as to straddle the gap of the ring member, and the gap is widened and expanded in diameter by the turnbuckle. Moreover, in patent document 2, the wedge-shaped piece is pushed into the gap of the ring member to widen the gap and expand the diameter of the ring member.

Japanese Utility Model Publication No. 60-094429 Japanese Utility Model Publication No. 3-087528

  However, when the diameter of the ring member is increased by widening the gap of the ring member, the force that the ring member presses the seal member in the radial direction at a position shifted by 180 ° from the gap is that the ring member seals at a position close to the gap. It is considerably smaller than the force pressing the member in the radial direction. As described above, since the radial pressing force of the ring member against the seal member varies in the circumferential direction, the sealing performance may be insufficient.

  Then, an object of this invention is to provide the edge part processing method of the lining material which can press a sealing member uniformly regarding the circumferential direction, and the diameter expansion apparatus used for it.

Means for Solving the Problems and Effects of the Invention

An end treatment method for a lining material according to a first aspect of the present invention is an end treatment method for sealing an end portion of a lining material lined in a pipe, wherein a cylindrical sealing member is provided at the end of the lining material. a first step of arranging a second step of installing a C-shaped ring member inside the sealing member, the inside of the front Symbol ring member, a plurality of pressing members and the plurality of pressing members arranged in the annular A diameter-enlarging device including a diameter-enlarging mechanism that moves in a radial direction, moves the plurality of pressing members in the diameter-enlarging direction, and expands the diameter of the ring member by the plurality of pressing members; A third step of pressing the ring member, wherein in the third step, the interval between the plurality of pressing members is wide at only one place, the others are equally spaced, and the one place is at both ends in the circumferential direction of the ring member. The plurality of parts so as to be located on the inner peripheral side of the part It characterized that you place the pressing member.

According to this configuration, in the end treatment of the lining material, first, a cylindrical seal member is disposed at the end portion of the lining material, and then a C-shaped ring member is installed inside the seal member. After that, by moving the plurality of pressing members arranged inside the ring member in the diameter increasing direction, the ring member is pressed from the inside by the plurality of pressing members to increase the diameter and pressed against the seal member. Hold in an expanded state. Thereby, the edge part of a lining material can be sealed.
In order to increase the diameter of the ring member by pressing it from the inside by a plurality of pressing members arranged in the circumferential direction, the conventional end processing method for expanding the diameter of the ring member by widening the gap between the circumferential ends of the ring member In comparison, the seal member can be pressed uniformly and simultaneously in the circumferential direction. As a result, the sealing performance at the end of the lining material can be improved.

  According to this configuration, since the pressing member is not disposed on the inner peripheral side of both end portions in the circumferential direction of the ring member, both end portions in the circumferential direction of the ring member are not sandwiched between the pressing member and the seal member. Therefore, the clearance gap between the both ends of the ring member in the circumferential direction can be smoothly widened, and the diameter of the ring member can be easily increased. Moreover, it is easy to attach the metal fitting when attaching the metal fitting for maintaining the expanded diameter state of the ring member to both ends in the circumferential direction of the ring member.

In the edge treatment method for a lining material according to a second aspect of the present invention, the diameter expansion mechanism uses a fluid pressure as a drive source, and the drive pressure can be manually adjusted. However, the drive pressure of the diameter expansion mechanism is increased, and the ring member is expanded in diameter by the plurality of pressing members.

  According to this configuration, the driving pressure of the diameter expansion mechanism is manually increased while looking at the pressure gauge, and the ring member is expanded by the plurality of pressing members. Can be managed. Therefore, the edge part of a lining material can be sealed reliably. In addition, it is possible to reduce variations in the sealing performance at the end of the lining material due to the work accuracy of the operator.

A diameter expansion device according to a third aspect of the present invention is a diameter expansion device used in the edge treatment method for a lining material according to the first or second aspect , wherein the diameter expansion mechanism includes a fixed shaft and the fixed shaft. And a plurality of arm members that extend radially from the fixed shaft and the moving member, and each of the plurality of pressing members is swingably connected to an outer peripheral end. A driving means for driving the moving member in the axial direction; and a leg member extending downward from the fixed shaft or the moving member , wherein the arm member is rotatably connected to the fixed shaft. a first arm, while being rotatably connected to the first arm, have a second arm pivotally coupled to the movable member, the radial direction from the fixed shaft to the tip of the leg member The distance when the arm member is in a reduced diameter state Greater than the radial distance to the outer peripheral surface of the pressing member from Teijiku, and, wherein said that the fixed shaft is smaller than the radial distance to the outer peripheral surface of the pressing member when said arm member is most expanded And

  According to this configuration, when the moving member is moved in the axial direction with respect to the fixed shaft, the angle formed between the second arm connected to the moving member and the first arm connected to the fixed shaft changes. The length of the member in the radial direction changes, whereby the pressing member connected to the outer peripheral end of the arm member moves in the radial direction. Therefore, a plurality of pressing members can be simultaneously moved in the radial direction simply by moving one moving member in the axial direction.

  According to this configuration, since the pressing member is connected to the arm member so as to be able to swing, the moving member moves in the axial direction with respect to the fixed shaft, and the angles of the first arm and the second arm with respect to the fixed shaft Even if changes, the pressing member can always be arranged parallel to the inner surface of the ring member. Therefore, the diameter of the ring member can be increased uniformly.

  According to this configuration, when the diameter-enlarging device is carried into the pipe line, the distal end of the leg member is positioned outside the outer peripheral surface of the pressing member by setting the arm member in a reduced diameter state. Can be brought into contact with the lower part of the inner surface of the pipe line to support the diameter expanding device. Further, when the diameter of the ring member is increased by expanding the diameter of the arm member, the tip of the leg member moves inward from the position outside the outer peripheral surface of the pressing member, so that the leg member does not get in the way when the diameter is expanded.

It is a longitudinal cross-sectional view of the pipe line which implemented the edge part processing method of the lining material which concerns on embodiment of this invention. It is an enlarged view of the edge part vicinity of the pipe line of FIG. It is a perspective view of a ring member. It is a perspective view of the ring member in the state where the wedge-shaped piece and the connecting plate are attached. It is a perspective view of a diameter expanding device concerning an embodiment of the present invention. It is sectional drawing of a diameter expanding apparatus. It is sectional drawing along the AA line of FIG. It is a figure of the state which moved the pressing member from the state of FIG. 7 to the diameter-expanding direction. It is a longitudinal cross-sectional view of a pipe line when a sealing member and one ring member are arrange | positioned at the edge part of a lining material. It is a longitudinal cross-sectional view of a pipe line when a diameter expansion apparatus is installed inside a ring member. It is a longitudinal cross-sectional view of a pipe line when expanding the diameter of a ring member. It is a cross-sectional view of the pipe line along the CC line of FIG. It is sectional drawing of the diameter expanding apparatus which concerns on other embodiment of this invention.

Embodiments of the present invention will be described below.
In the present embodiment, in order to seal the end portion of the lining material 2 lining the existing gas conduit 1 (hereinafter simply referred to as the pipe 1), the end treatment method and the diameter expansion device of the lining material of the present invention are used. It is an example which applied.

  As shown in FIG. 1, the pipe line 1 has a cylindrical shape and is laid in the ground in a substantially horizontal direction. The inner diameter of the pipe line 1 is, for example, 400 to 750 mm. The lining material 2 has a configuration in which, for example, a hard thermosetting resin layer is laminated on both surfaces of a tubular woven fabric, and the thickness thereof is, for example, 2 to 4 mm. The lining material 2 is bonded to the inner surface of the pipeline 1 with an adhesive (not shown). The end portion of the lining material 2 is disposed at a position away from the end portion 1 a of the pipe line 1 by a predetermined distance.

<End structure of lining material>
First, the end structure of the lining material that has been subjected to end processing will be described. As shown in FIG. 2, a cylindrical seal member 3 is disposed inside the end portion of the lining material 2. The seal member 3 is disposed such that the central portion in the axial direction is located at the edge of the lining material 2. The seal member 3 is made of an elastic material such as rubber, and the outer diameter thereof is substantially the same as the inner diameter of the pipe line 1.

  Two ring members 5 made of metal are arranged in the axial direction inside the seal member 3. The seal member 3 is pressed against the inner surface side of the pipe line 1 by the ring member 5. The two ring members 5 are respectively arranged inside the both end portions of the seal member 3.

  As shown in FIG. 3, the ring member 5 is a plate-like member having a spring elasticity formed in a C shape. The two ring members 5 have slightly different circumferences, but the other configurations are the same. Tapered edges 5 a are formed at both ends in the circumferential direction of the ring member 5. The two tapered edges 5a of the ring member 5 are inclined in opposite directions with respect to the axial direction. The inclination angle α with respect to the axial direction of the taper edge 5a is, for example, 5 °. Further, the taper edge 5a is inclined with respect to the radial direction so that the distance between the taper edges 5a becomes wider toward the inner peripheral side (see FIG. 12). The inclination angle β with respect to the radial direction of the tapered edge 5a is, for example, 15 °.

  As shown in FIG. 4, wedge-shaped pieces 6 are fitted between the tapered edges 5 a at both ends in the circumferential direction of the ring member 5. The wedge-shaped piece 6 is a plate member that is curved with substantially the same curvature as the inner surface of the pipe 1. Both ends in the circumferential direction of the wedge-shaped piece 6 are inclined at substantially the same angle as the angle α of the tapered edge 5a with respect to the axial direction. The wedge-shaped piece 6 has a trapezoidal cross-sectional shape, and both end portions in the circumferential direction of the wedge-shaped piece 6 are inclined at substantially the same angle as the angle β of the tapered edge 5a with respect to the radial direction.

  Further, at both ends in the circumferential direction of the ring member 5, projecting portions 5 b projecting in the circumferential direction from the tapered edge 5 a are formed on the inner circumferential side from the tapered edge 5 a. The protrusion 5b plays a role of preventing the wedge-shaped piece 6 from coming out radially inward. Further, the connecting plate 7 is fixed to the inner peripheral surfaces of both end portions in the circumferential direction of the ring member 5 by screw members.

  Further, a floor plate 4 is disposed between the circumferential end portions of the ring member 5 and the wedge-shaped piece 6 and the inner surface of the seal member 3 (see FIGS. 2 and 12). The floor plate 4 is intended to improve slippage when the wedge-shaped piece 6 is inserted, and to keep the crimping force of the insertion portion of the wedge-shaped piece 6 uniform. In addition, in this embodiment, although the circumferential direction edge part of the ring member 5 is located in the lowest end of the ring member 5, the position of the circumferential direction edge part is not limited to this.

<Diameter device>
Next, the diameter expanding device 10 used for expanding the diameter of the ring member 5 will be described. As shown in FIGS. 5 to 7, the diameter expanding device 10 includes a fixed shaft 11, a moving member 12, a driving member 13, a hydraulic cylinder 14, a hydraulic pump 15 (see FIG. 10), and a plurality of arm members. 16, a plurality of pressing members 17, and four leg members 18. The drive member 13, the hydraulic cylinder 14 and the hydraulic pump 15 constitute the drive means of the present invention.

  In FIG. 5, the leg member 18 is omitted. FIG. 6 is a cross-sectional view taken along line BB in FIG. FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6. Only the arm member 16 and the pressing member 17 on the line AA in FIG. The holding member 17 is omitted.

  The fixed shaft 11 is a substantially cylindrical member. A plurality of slits 11 a extending in the axial direction are formed side by side in the circumferential direction in a range of about 2/3 of the entire length of the fixed shaft 11 from one axial end (the left end in FIG. 7) of the fixed shaft 11. A plurality of shaft support members 11b are fixed side by side in the circumferential direction on the outer peripheral surface of the fixed shaft 11 where the slits 11a are not formed.

  The moving member 12 includes a substantially cylindrical tube 12a disposed on the outer peripheral surface of the fixed shaft 11, and a plurality of shaft support members 12b fixed to the outer peripheral surface of the tube 12a. On the inner peripheral surface of the shaft support member 12b, a convex portion 12c that protrudes inward and penetrates the cylindrical body 12a is provided. The tip of the convex portion 12 c is inserted through the slit 11 a of the fixed shaft 11. Therefore, the moving member 12 can move only in the axial direction with respect to the fixed shaft 11 and cannot move in the circumferential direction.

  The drive member 13 is a cylindrical member disposed inside the fixed shaft 11. A groove 13 a that engages with the convex portion 12 c of the moving member 12 is formed on the outer peripheral surface of the driving member 13. Therefore, the drive member 13 moves only in the axial direction integrally with the moving member 12.

  The hydraulic cylinder 14 is attached to one end of the fixed shaft 11. The telescopic rod 14 a of the hydraulic cylinder 14 is inserted inside the fixed shaft 11, and the tip thereof is fixed to the inner peripheral surface of the drive member 13. The hydraulic cylinder 14 is connected to a manually operated hydraulic pump 15 (see FIG. 10). The telescopic rod 14 a is extended by the hydraulic pressure supplied from the hydraulic pump 15 to the hydraulic cylinder 14, and the drive member 13 and the moving member 12 move in the axial direction of the fixed shaft 11. The hydraulic pump 15 includes a hydraulic pressure gauge 15a that measures the hydraulic pressure.

  The plurality of arm members 16 are arranged radially outside the fixed shaft 11. The arm member 16 is composed of a first arm 16a and a second arm 16b whose end portions are rotatably connected. The end of the first arm 16a opposite to the second arm 16b is rotatably connected to the shaft support member 11b of the fixed shaft 11. The end of the second arm 16b opposite to the first arm 16a is rotatably connected to the shaft support member 12b of the moving member 12.

  As shown in FIGS. 7 and 8, the moving member 12 moves in the axial direction toward the first arm 16a, whereby the angle formed by the first arm 16a and the second arm 16b is reduced, and the arm member 16 is moved. The length in the radial direction increases (expands). Further, when the moving member 12 moves in the opposite direction, the angle formed by the first arm 16a and the second arm 16b increases, and the radial length of the arm member 16 decreases (reduces its diameter).

  The plurality of pressing members 17 are connected in an oscillating manner to the outer peripheral ends of the arm members 16 (specifically, the connecting portion between the first arm 16a and the second arm 16b), and are arranged in an annular shape. . The outer peripheral surface of the pressing member 17 is formed in an arc shape. The plurality of pressing members 17 are for pressing the ring member 5 from the inner surface to increase the diameter of the ring member 5. When the arm member 16 is expanded or contracted, the pressing member 17 moves in the radial direction. The radial distance from the center of the fixed shaft 11 to the outer peripheral surface of the pressing member 17 when the arm member 16 has the largest diameter is substantially the same as the inner diameter of the pipe line 1. The pressing member 17 can be detached from the arm member 16.

  Two leg members 18 are arranged on both sides of the arm member 16 with respect to the axial direction of the fixed shaft 11. The two leg members 18 on the first arm 16 a side are fixed to the fixed shaft 11, and the two leg members 18 on the second arm 16 b side are fixed to the moving member 12. The leg member 18 extends obliquely downward from the moving member 12 or the fixed shaft 11 in the left-right direction. A roller 18 a for traveling in the pipe line 1 is provided at the tip of the leg member 18. The radial distance from the fixed shaft 11 to the tip of the leg member 18 (tip of the roller 18a) is larger than the radial distance from the fixed shaft 11 to the outer peripheral surface of the pressing member 17 when the arm member 16 is in a reduced diameter state ( 6) and smaller than the radial distance from the fixed shaft 11 in the state where the arm member 16 has the largest diameter to the outer peripheral surface of the pressing member 17 (see FIG. 12).

  The diameter expanding device 10 is supported by a support base 20 (only a part is shown in FIGS. 10 and 11). The support 20 is attached to the hydraulic cylinder 14 and configured to lift the hydraulic cylinder 14. The support base 20 can move the diameter expanding device 10 in the pipe path in a direction perpendicular to the pipe axis direction and the pipe axis (vertical and horizontal directions).

<End treatment method for lining material>
Next, the edge part processing method of a lining material is demonstrated. First, as shown in FIG. 9, the seal member 3 is disposed inside the end portion of the lining material 2 lining the pipe 1. And the ring member 5 is arrange | positioned inside the edge part far from the pipe end 1a of this seal member 3. FIG. The ring member 5 is disposed so that both end portions in the circumferential direction are located at the lowest end. Further, the floor plate 4 is disposed between the circumferential end portions of the ring member 5 and the seal member 3.

  Next, as shown in FIG. 10, the diameter of the arm member 16 is reduced, and the diameter expanding device 10 is carried into the pipe line 1. Since the radial distance from the center of the fixed shaft 11 to the tip of the leg member 18 is larger than the radial distance from the fixed shaft 11 to the outer peripheral surface of the pressing member 17 when the arm member 16 is in a reduced diameter state, the leg member 18 The tip of is located outside the outer peripheral surface of the pressing member 17 and contacts the lower part of the inner surface of the pipe line 1. Therefore, the diameter expanding device 10 can be supported by the leg member 18 and the diameter expanding device 10 can be driven by the roller 18a.

  The diameter expanding device 10 removes the pressing member 17 at the lowermost end from the arm member 16 in advance. Thereby, the space | interval of the some pressing member 17 is wide only at one place, and others are equal intervals.

  Next, after the position and orientation of the diameter expanding device 10 are adjusted by the support base 20 so that the center of the fixed shaft 11 substantially coincides with the center axis of the pipe line 1, the pressing member 17 is placed inside the ring member 5. The diameter expanding device 10 is advanced so as to be positioned. At this time, the gap formed by removing the pressing member 17 at the lowermost end is arranged on the inner peripheral side of both end portions in the circumferential direction of the ring member 5.

  Thereafter, as shown in FIGS. 11 and 12, the hydraulic pump 15 is operated while looking at the hydraulic pressure gauge 15a to increase the hydraulic pressure supplied from the hydraulic pump 15 to the hydraulic cylinder 14, thereby expanding the plurality of pressing members 17 in diameter. Move in the direction. By causing a plurality of pressing members 17 to contact the ring member 5, the center of the fixed shaft 11 coincides with the central axis of the pipe line 1. Further, the hydraulic pressure is increased, and the ring member 5 is pressed from the inside by the plurality of pressing members 17 to increase the diameter. When the plurality of pressing members 17 are brought into contact with the ring member 5, the tip of the leg member 18 moves inward from a position outside the outer peripheral surface of the pressing member 17. Never become.

  The wedge-shaped piece 6 is fitted between the taper edges 5a at both ends in the circumferential direction of the ring member 5 while performing the diameter expanding operation of the ring member 5. For example, each time the hydraulic pressure supplied from the hydraulic pump 15 to the hydraulic cylinder 14 is increased by a predetermined pressure (for example, 5 MPa), the wedge-shaped piece 6 is driven.

  When the hydraulic pressure reaches a predetermined pressure and the ring member 5 is firmly pressed against the seal member, the operation of the hydraulic pump 15 is stopped and the diameter expansion is finished. Then, the wedge-shaped pieces 6 are fitted into the gaps at both ends in the circumferential direction of the ring member 5. Thereafter, the diameter of the arm member 16 is reduced, and the diameter expanding device 10 is moved from the inside of the seal member 3.

  Next, a seal agent (not shown) is applied to the end surface of the lining material 2 by turning substantially half of the seal member 3 on the tube end 1a side, and then the seal member 3 is returned to its original position. Thereafter, the ring member 5 is arranged inside the end portion of the seal member 3 on the tube end 1 a side, and the diameter expansion and the wedge-shaped piece 6 are inserted in the same manner as the other ring member 5. Thereby, the edge part of the lining material 2 is sealed.

  Thereafter, as shown in FIG. 2, the connecting plate 7 is screwed to the inner peripheral surfaces of the two circumferential end portions of the two ring members 5. Since both end portions in the circumferential direction of the ring member 5 are fixed by the connecting plate 7, even if the wedge-shaped piece 6 is displaced, it is possible to prevent the ring member 5 from being reduced in diameter.

  In the edge part processing method of the lining material of the present embodiment described above, the ring member 5 is pressed from the inside by a plurality of pressing members 17 arranged in the circumferential direction to expand the diameter. Compared to the conventional end processing method in which the diameter of the ring member is increased by widening the gap, the seal member 3 can be pressed uniformly and simultaneously in the circumferential direction. As a result, the sealing performance at the end of the lining material 2 can be improved.

  Further, in the present embodiment, since the plurality of pressing members 17 simultaneously move in the diameter increasing direction, the centers of the plurality of pressing members 17 are brought into contact with the ring member 5 by bringing the plurality of pressing members 17 into contact with the ring member 5. Can be matched to the center. Therefore, the pressing force by the plurality of pressing members 17 can be applied uniformly to the ring member 5 in the circumferential direction.

  Further, in the present embodiment, the pressing members 17 are not disposed on the inner peripheral sides of both ends in the circumferential direction of the ring member 5, so that both ends in the circumferential direction of the ring member 5 are between the pressing member 17 and the seal member 3. It is not pinched. Therefore, the clearance gap between the circumferential direction both ends of the ring member 5 can be expanded smoothly, and the ring member 5 can be easily expanded in diameter. Moreover, the operation | work which inserts the wedge-shaped piece 6 between the circumferential direction both ends of the ring member 5 is easy to be performed.

  In this embodiment, the diameter of the ring member 5 with respect to the seal member 3 is increased by manually increasing the drive hydraulic pressure of the diameter expansion device 10 while looking at the hydraulic pressure gauge 15a and expanding the ring member 5 by the diameter expansion device 10. The directional pressing force can be managed by hydraulic pressure. Therefore, the end portion of the lining material 2 can be reliably sealed. Moreover, the dispersion | variation in the sealing performance of the edge part of the lining material 2 by an operator's work precision can be reduced.

  Further, in the diameter expansion device 10 of this embodiment, a plurality of arm members 16 are radially connected to the fixed shaft 11 and the moving member 12, and a plurality of pressing members 17 are provided at the outer ends of the plurality of arm members 16. Since they are connected, the plurality of pressing members 17 can be simultaneously moved in the radial direction simply by moving one moving member 12 in the axial direction with respect to the fixed shaft 11.

  Further, in the diameter expansion device 10 of the present embodiment, since the pressing member 17 is connected to the arm member 16 so as to be swingable, the moving member 12 moves in the axial direction with respect to the fixed shaft 11, and Even if the angles of the first arm 16 a and the second arm 16 b with respect to the fixed shaft 11 change, the pressing member 17 can always be arranged parallel to the inner surface of the ring member 5. Therefore, the diameter of the ring member 5 can be expanded uniformly.

  In this embodiment, the radial distance from the fixed shaft 11 to the tip of the leg member 18 is larger than the radial distance from the fixed shaft 11 to the outer peripheral surface of the pressing member 17 when the arm member 16 is in a reduced diameter state. And it is smaller than the radial distance from the fixed shaft 11 to the outer peripheral surface of the pressing member 17 when the arm member 16 has the largest diameter. Therefore, when the diameter expanding device 10 is carried into the pipeline 1, the diameter expansion device 10 can be supported by bringing the leg member 18 into contact with the lower portion of the inner surface of the pipeline 1 by setting the arm member 16 in a reduced diameter state. . Further, when the diameter of the ring member 5 is increased by expanding the diameter of the arm member 16, the tip of the leg member 18 moves inward from a position outside the outer peripheral surface of the pressing member 17. It does not get in the way.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims.

  In the diameter expansion device 10 of the above embodiment, the drive means for driving the moving member 12 in the axial direction is constituted by the hydraulic pump 15, the hydraulic cylinder 14, and the drive member 13. It is not limited to.

  For example, as in the diameter expansion device 110 shown in FIG. 13, the driving means includes a rotating lever 121 attached to one end of the fixed shaft 11, and a rotating rod disposed inside the fixed shaft 11 and fixed to the rotating lever 121. 122 and a cylindrical driving member 123 mounted on the outer peripheral surface of the rotating rod 122 may be used. A thread groove is formed on the outer peripheral surface of the rotating rod 122 and the inner peripheral surface of the driving member 123, and the driving member 123 is screwed to the rotating rod 122. On the outer peripheral surface of the drive member 123, a groove 123a that engages with the tip of the convex portion 12c of the moving member 12 is formed. Moreover, since the convex part 12c of the moving member 12 is inserted in the slit 11a of the fixed shaft 11 similarly to the above-described embodiment, the driving member 123 and the moving member 12 can move only in the axial direction. Therefore, when the rotating lever 121 is operated to rotate the rotating rod 122, the driving member 123 moves in the axial direction. In FIG. 13, a lever 124 is fixed to one end of the fixed shaft 11. The lever 124 is for preventing the diameter expanding device 110 from rotating when the rotating lever 121 is rotated.

  The leg member 18 of the diameter expansion device 10 of the above embodiment has the roller 18a at the tip, but the roller 18a may not be provided.

  Although the diameter expansion apparatus 10 of the said embodiment has the four leg members 18, the number of the leg members 18 is not limited to this. Moreover, in the said embodiment, although the leg member 18 is provided in the both sides of the arm member 16 regarding the axial direction of the fixed axis | shaft 11, as shown in FIG. 13, for example, one end of the arm member 16 regarding the axial direction of the fixed axis | shaft 11 is provided. The leg member 18 may be provided only on the side.

  In the diameter expansion device 10 of the above embodiment, the arm member 16 is expanded or contracted by moving the moving member 12 in the axial direction, and the pressing member 17 is moved in the radial direction. The configuration for moving the pressing member 17 in the radial direction is not limited to this. For example, by arranging a plurality of cylinders radially so that the rod is on the outer peripheral side, fixing the pressing member 17 to the tip of the rod, and extending the rod, the plurality of pressing members 17 are moved in the radial direction. Also good.

  In the above embodiment, in order to hold the ring member 5 in an expanded state, the wedge-shaped pieces 6 are fitted between the circumferential ends of the ring member 5, and the connecting plates 7 are disposed at both circumferential ends of the ring member 5. Although fixed, the method for holding the ring member 5 in an expanded state may be other than this. For example, the expanded diameter state may be maintained only by the wedge-shaped piece 6 without providing the connecting plate 7.

  Although the said embodiment is an example which applied the edge part processing method of the lining material of this invention to the process of the edge part of the lining material 2 lining the gas conduit, the pipe line to which this invention is applied is gas It is not limited to a conduit, and may be a water supply pipe or a sewer pipe. Further, the inner diameter of the pipe line is not limited to the diameter described in the above embodiment. In addition, when applying this invention to the pipe line through which a liquid flows, it is preferable that the position of the circumferential direction both ends of the ring member 5 is made into the uppermost end of the ring member 5. FIG. This is because the liquid flowing inside collides with the wedge-shaped piece 6 and the connecting plate 7 to prevent the wedge-shaped piece 6 and the connecting plate 7 from being loosened.

DESCRIPTION OF SYMBOLS 1 Pipe line 2 Liner material 3 Seal member 4 Laying board 5 Ring member 5a Tapered edge 6 Wedge-shaped piece 7 Connection board 10, 110 Diameter expansion apparatus 11 Fixed shaft 11a Slit 11b Shaft support member 12 Moving member 12a Tubular body 12b Shaft support member 13 Drive Member 13a Groove 14 Hydraulic cylinder 14a Telescopic rod 15 Hydraulic pump 15a Hydraulic gauge (pressure gauge)
16 Arm member 16a First arm 16b Second arm 17 Holding member 18 Leg member 18a Roller 121 Rotating lever 122 Rotating rod 123 Driving member

Claims (3)

An end treatment method for sealing an end of a lining material lined in a pipeline,
A first step of arranging a cylindrical sealing member at an end of the lining material;
A second step of installing a C-shaped ring member inside the seal member ;
Inside the front Symbol ring member, by installing a diameter device and a radially expansible mechanism for moving the plurality of pressing members and a plurality of pressing members arranged in an annular radially enlarged the plurality of pressing members A third step of moving in a direction and expanding the diameter of the ring member by the plurality of pressing members and pressing the ring member against the seal member;
In the third step,
The plurality of pressing members are arranged so that the interval between the plurality of pressing members is wide at only one place, and the others are equally spaced, and the one place is located on the inner peripheral side of both circumferential ends of the ring member. end processing method of lining material, characterized that you place a. The diameter expansion mechanism uses a fluid pressure as a drive source, and can manually adjust the drive pressure,
2. The lining material according to claim 1, wherein in the third step, the ring member is expanded in diameter by the plurality of pressing members by increasing a driving pressure of the diameter expansion mechanism while looking at a pressure gauge. Edge processing method. It is the said diameter expansion apparatus used with the edge part processing method of the lining material of Claim 1 or 2 , Comprising:
The diameter expansion mechanism is
A fixed shaft;
A moving member provided to be movable in the axial direction of the fixed shaft;
A plurality of arm members that extend radially from the fixed shaft and the moving member, and each of the plurality of pressing members is swingably coupled to an outer peripheral end;
Driving means for driving the moving member in the axial direction;
A leg member extending downward from the fixed shaft or the moving member ,
The arm member is
A first arm rotatably connected to the fixed shaft;
While being rotatably connected to the first arm, it has a second arm pivotally connected to said moving member,
A radial distance from the fixed shaft to the tip of the leg member is larger than a radial distance from the fixed shaft to the outer peripheral surface of the pressing member when the arm member is in a reduced diameter state, and the arm member is The diameter expansion device according to claim 1, wherein the diameter expansion apparatus is smaller than a radial distance from the fixed shaft to the outer peripheral surface of the pressing member when the diameter is expanded most .

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