JP2015200410A - Inner face material pressing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner face material pressing device which can press an inner face material without damaging and deforming the inner face material.SOLUTION: An inner face pressing device 1A which presses an inner face material 3 in order to fit the inner face material 3 to an inner face material fixing member 4 which is provided at an internal peripheral face of an existing pipe 2 comprises: a pressing pad 31 which surface-contacts with the inner face material 3; a telescopic cylinder 32 which generates thrust for pressing the pressing pad 31 to the inner face material 3; and a reaction force support body 33 which takes a reaction force with respect to the internal peripheral face of the existing pipe 2. The inner face pressing device transmits the thrust from the telescopic cylinder 32 to the pressing pad 31 while taking the reaction force to the internal peripheral face of the existing pipe 2 by the reaction force support body 33, and presses the inner face material 3.

Description

  The present invention relates to an inner surface material pressing device suitable for use when lining an inner surface material on the inner peripheral surface side of a pipe, for example, for repairing an existing pipe or finishing the inner surface of a new pipe, and in particular, a pipe. The present invention relates to an inner surface material pressing device that presses the inner surface material in order to fit the inner surface material with respect to the inner surface material fixing member installed on the inner peripheral surface.

Conventionally, as a method of repairing existing pipes, adjacent lining bodies are joined together with connecting members to form a cylindrical body inside the existing pipe, and a curable filler is filled between the cylindrical body and the existing pipe. There are some that repair existing pipes.
Here, the first engaging portion is formed on the lining body, while the second engaging portion is formed on the connecting member, and the first engaging portion and the second engaging portion are adjacent to each other by the engagement. Matching lining bodies are joined via connecting members.

  On the other hand, an inner surface material fixing member made of a rigid ring or a rigid straight member is installed on the inner peripheral surface of the existing pipe, and the inner surface material fitted to the inner surface material fixing member is sequentially arranged in the circumferential direction of the existing pipe. In some cases, a tubular body is formed and a curable filler is filled between the tubular body and the existing pipe to repair and reinforce the existing pipe (for example, see Patent Document 1).

In the above-described existing pipe repairing method using a lining body, a lining device suitable for joining adjacent lining bodies with a connecting member has been proposed (for example, see Patent Document 2).
This lining device includes a rotating member that can roll on a connecting member, an air cylinder that generates a thrust for pressing the rotating member against the connecting member, and a fixed pad that takes a reaction force against the inner peripheral surface of an existing pipe. The flange-shaped convex part provided in the rotating member is fitted into the concave part provided in the bending area of the connecting member, and the thrust from the air cylinder is rotated while taking the reaction force with the fixed pad against the inner peripheral surface of the existing pipe By transmitting to the member and rolling while pressing the rotating member against the connecting member, the first engaging portion of the lining body and the second engaging portion of the connecting member are engaged, and the adjacent lining body is connected to the connecting member. It is comprised so that it can join.

JP 2006-316539 A Japanese Patent No. 5138829

By the way, in the thing of the said patent document 1, in order to fit an inner surface material with respect to an inner surface material fixing member, it is necessary to press this inner surface material to an inner surface material fixing member, and the apparatus which presses an inner surface material It is conceivable to apply the lining apparatus according to Patent Document 2 described above.
In this case, a pressing force is applied from the rotating member to the inner surface material in a point contact state where the flange-shaped convex portion provided on the rotating member is abutted against the inner surface material.
For this reason, a strong force acts locally on the point contact portion where the convex portion of the rotating member is abutted on the inner surface material, which may cause a problem that the inner surface material is damaged or deformed. .

Therefore, simply applying the lining device according to Patent Document 2 as an apparatus for fitting the inner surface material to the inner surface material fixing member is not preferable because there is a risk of causing the above-mentioned problem. It can be said that there is room.
Although it is conceivable to use a simple roller that does not have a convex portion or the like on the rolling surface as the rotating member, in this case, the roller is in line contact with the inner surface material, and a strong force is applied to the line contact portion of the roller in the inner surface material. Acts intensively, and there is a possibility that the same problem as the above problem occurs.

  This invention is made | formed in view of the above situations, and it aims at providing the inner surface material press apparatus which can press an inner surface material, without scratching or deforming an inner surface material.

  In order to achieve the above object, the inner surface material pressing device according to the first aspect of the present invention is an inner surface material pressing device for pressing the inner surface material to fit the inner surface material to the inner surface material fixing member installed on the inner peripheral surface of the pipe. A pressure pad that is in surface contact with the inner surface material, a telescopic cylinder that generates thrust for pressing the pressure pad against the inner surface material, and a reaction force support that takes a reaction force against the inner peripheral surface of the pipe. And a thrust force from the telescopic cylinder is transmitted to the pressing pad while applying a reaction force to the inner peripheral surface of the tube by a reaction force support, thereby pressing the inner surface material.

  In this case, the reaction force support body includes a support bar extending in the tube diameter direction, and the length of the support bar can be adjusted (second invention).

  In addition, the support rod is pressed against each of a plurality of pressing points existing in the tube circumferential direction on the inner surface material and a gantry that rotatably supports the support rod in the tube circumferential direction with a portion through which the tube axis center line passes as a rotation center. A positioning mechanism for positioning the pad is provided, and the pressing points can be sequentially pressed with the pressing pad by the rotation operation of the support bar and the positioning operation by the positioning mechanism (third invention).

  In order to achieve the above object, an inner surface material pressing device according to a fourth aspect of the present invention provides a tube in the inner surface material for fitting the inner surface material to an inner surface material fixing member installed along the inner peripheral surface of the tube. An inner surface material pressing device that presses a plurality of pressing points existing in the circumferential direction, a plurality of pressing pads that are in surface contact with each of the plurality of pressing points in the inner surface material, and a plurality of pressing pads that correspond to the plurality of pressing pads. A plurality of telescopic cylinders that generate thrust to press against the pressing point of the tube, and a reaction force support that takes a reaction force against the inner peripheral surface of the pipe, and a reaction force that is a reaction force support against the inner peripheral surface of the pipe The thrust from each expansion / contraction cylinder is transmitted to each pressing pad while removing the pressure, and each pressing point on the inner surface material is pressed.

  In this case, a plurality of expansion / contraction cylinders are distributed on one side and the other side in the tube diameter direction, and the expansion / contraction cylinders are arranged so that the thrust action lines of the expansion / contraction cylinders intersect on the tube axis center line. (5th invention).

  Further, the extension cylinder connected in series with the reaction force support along the tube diameter direction and the pressing pad are connected by an extension rod extending in the tube diameter direction, and the length of the extension rod can be adjusted. (Sixth invention).

  Further, the reaction force support body includes a tube pressing member that can be pressed against the inner peripheral surface of the pipe while avoiding the inner surface material fixing member, and directly takes a reaction force on the inner peripheral surface of the pipe via the tube pressing member. (Seventh invention).

  Further, the tube pressing member can be replaced with an inner surface material pressing member that can be pressed by surface contact with the inner surface material already fitted to the inner surface material fixing member, and the reaction force support includes the inner surface material pressing member and the inner surface material. It is possible to indirectly apply a reaction force to the inner peripheral surface of the pipe via the pipe (eighth invention).

  A detection sensor for detecting the position of the inner surface material fixing member can be disposed on the pressing pad (the ninth invention).

  According to the inner surface material pressing device of the first invention, since the inner surface material is pressed by the pressing pad that is in surface contact with the inner surface material, the pressing force required for fitting to the inner surface material fixing member is reduced. The inner surface material can be made to act at a predetermined surface pressure or less so as not to be damaged or deformed, and the inner surface material can be pressed without damaging or deforming the inner surface material.

  By adopting the configuration of the second invention, that is, the reaction force support is provided with a support bar extending in the pipe radial direction, and the length of the support bar can be adjusted, so that the inner surface material can be fitted. Even if the installation work progresses and the construction diameter of the pipe becomes small, it is possible to quickly adapt to such a change in construction diameter.

  By adopting the configuration of the third invention, that is, a pedestal that rotatably supports the support rod in the pipe circumferential direction around the portion of the support rod through which the tube axis center line passes, and in the pipe circumferential direction of the inner surface material A positioning mechanism for positioning the pressing pad with respect to each of a plurality of existing pressing points, and by enabling each pressing point to be sequentially pressed with the pressing pad by a rotation operation of the support bar and a positioning operation by the positioning mechanism, A plurality of pressing points can be accurately pressed only by a single telescopic cylinder as thrust generating means for pressing the inner surface material. Therefore, the weight of the apparatus can be reduced, and for example, it is possible to accurately press a plurality of pressing points even on an inner surface material in a place with poor visibility under running water.

According to the inner surface material pressing device of the fourth invention, since the plurality of pressing points of the inner surface material are pressed by the plurality of pressing pads that are brought into surface contact with each of the plurality of pressing points, similarly to the first invention. In addition, the pressing force required for fitting to the inner surface material fixing member can be applied to the inner surface material so that the inner surface material is below a predetermined surface pressure that does not cause damage or deformation of the inner surface material. Or the inner surface material can be pressed without being deformed.
Furthermore, since a plurality of pressing points of the inner surface material can be pressed at once by a plurality of pressing pads, the efficiency of the inner surface material fitting operation can be significantly improved.

  By adopting the configuration of the fifth aspect of the invention, that is, a plurality of expansion / contraction cylinders are distributed and arranged on one side and the other side in the tube radial direction, and the thrust action lines of the expansion / contraction cylinders intersect on the tube axis center line. By arranging these telescopic cylinders in this way, both the weight balance and mechanical balance of the device can be improved, the handling of the device is facilitated, and it is possible to prevent the load from acting on the device in advance. Therefore, the apparatus can be used stably over a long period of time.

  By adopting the configuration of the sixth aspect of the invention, that is, the expansion cylinder arranged in series with the reaction force support along the tube radial direction and the pressing pad are connected by the extension rod extending in the tube radial direction. The length of the extension rod can be adjusted, so that even if the inner surface material is fitted and the construction diameter of the pipe is reduced, it is possible to quickly adapt to such a change in construction diameter. .

  By adopting the configuration of the seventh invention, that is, the reaction force support body includes a tube pressing member that can be pressed against the inner peripheral surface of the tube while avoiding the inner surface material fixing member, and the tube is pressed through the tube pressing member. By taking a reaction force directly on the inner peripheral surface, when the reaction force is applied to the place where the inner surface material fixing member is installed on the inner peripheral surface of the tube, the inner surface material fixing member is avoided and The reaction force can be directly applied to the inner peripheral surface.

  By adopting the configuration of the eighth aspect of the invention, that is, the tube pressing member can be replaced with an inner surface material pressing member that can be pressed by surface contact with the inner surface material already fitted to the inner surface material fixing member. The support body indirectly receives a reaction force on the inner peripheral surface of the pipe through the inner surface material pressing member and the inner surface material, so that the reaction force is indirectly applied to the inner peripheral surface of the pipe without damaging the inner surface material. Can be taken.

  By adopting the configuration of the ninth invention, that is, by arranging a detection sensor for detecting the position of the inner surface material fixing member in the pressing pad, the inner surface material and inner surface material fixed pressed by the pressing pad. The positional relationship of the members can be detected, and thereby the state of fitting the inner surface material to the inner surface material fixing member can be confirmed.

It is a figure which shows the inner surface material pressing apparatus which concerns on the 1st Embodiment of this invention, (a) is a front view of an installation state in an existing pipe, (b) is the same side view. It is the A section enlarged view of Drawing 1 (a). It is the B section enlarged view of Drawing 1 (b). It is the C section enlarged view of Drawing 1 (a). It is the D section enlarged view of FIG.1 (b). It is structure explanatory drawing of an inner surface material pressing member. It is process explanatory drawing of an inner surface material fitting operation | work. It is a figure which shows the inner surface material pressing apparatus which concerns on the 2nd Embodiment of this invention, (a) is a front view of an installation state in an existing pipe, (b) is the same side view. It is the E section enlarged view of Drawing 8 (a). It is the F section enlarged view of Fig.8 (a). It is a figure which shows the inner surface material pressing apparatus which concerns on the 3rd Embodiment of this invention, and is a front view of the installation state in the existing pipe. It is the G section enlarged view of FIG.

  Next, an embodiment of an inner surface material pressing device of the present invention will be described based on the drawings.

[First Embodiment]
FIG. 1 is a view showing an inner surface material pressing device according to the first embodiment of the present invention, and shows a front view (a) and a side view (b) in an installed state on an existing pipe.
Further, FIG. 2 shows an enlarged view of a portion A in FIG.

<Overview of inner surface material pressing device>
An inner surface material pressing device 1A shown in FIGS. 1A and 1B is a device used when lining an inner surface material 3 on the inner peripheral surface side of an existing pipe 2 for repairing and reinforcing the existing pipe 2. There is a function of pressing the inner surface material 3 in order to fit the inner surface material 3 to the inner surface material fixing member 4 installed on the inner peripheral surface of the existing pipe 2.
A plurality of inner surface material fixing members 4 are installed with a predetermined interval in the tube axis direction, and the inner surface material 3 is attached so as to be bridged between the inner surface material fixing members 4 adjacent in the tube axis direction. .

<Description of inner surface material>
The inner surface material 3 is made of, for example, a synthetic resin band plate-like member extending along the tube axis direction, and has a plate surface 3a on one side facing the inner peripheral surface of the existing tube 2, and this one side On the opposite side of the plate surface 3a, there is a plate surface 3b on the other side constituting a new inner peripheral surface of the existing pipe 2 after lining.

As shown in FIG. 2, the first locking claw 11, the second locking claw 12, and the third locking claw have a predetermined interval in the pipe circumferential direction on the plate surface 3 a on one side of the inner surface material 3. 13 are formed.
At both ends in the pipe circumferential direction of the inner surface material 3, fitting portions 14 formed by forming locking claws in openings opened upward are formed.
The inner surface materials 3 adjacent to each other in the pipe circumferential direction are fitted with the inner surface material connecting material 15 having locking claws that can be engaged with the locking claws in the respective fitting portions 14 in a state of being abutted with each other in the pipe circumferential direction. It is connected to the wearing part 14 by fitting in a retaining state.

<Description of inner surface material fixing member>
The inner surface material fixing member 4 is configured by assembling a plurality of connecting members 18 made of, for example, synthetic resin along a rigid ring 17 having a shape along the inner peripheral surface of the existing pipe 2.

  The rigid ring 17 is formed in an annular shape in the circumferential direction of the existing pipe 2 using a steel member such as a bar-shaped member made of a plurality of curved reinforcing bars, preferably deformed reinforcing bars and the like, and the existing pipe 2 It is attached to the inner peripheral surface of the existing pipe 2 via an arbitrary fixing member such as a required anchor (not shown) so as to be disposed with a substantially uniform interval with respect to the inner peripheral surface.

The connecting member 18 has a plurality of (five in this example) formed with a predetermined interval in the pipe circumferential direction on the fitting part 19 formed at both ends and the surface on the side facing the inner peripheral surface of the existing pipe 2. ) And the first inner surface material fitting portion 21 and the second inner surface material fitting formed with a predetermined interval in the pipe circumferential direction on the surface toward the center side of the existing pipe 2. It has a wearing part 22 and a third inner surface material fitting part 23.
A fitting portion 14 provided at an end portion of the inner surface material 3 is fitted into the fitting portion 19.
The inner surface material fitting portions 21, 22, and 23 are provided in the inner surface material 3 in an opening that opens toward the center side of the existing pipe 2 so that the inner surface material 3 is fitted in a retaining state. Locking claws 21a, 22a, and 23a that can be engaged with the locking claws 11, 12, and 13 are formed.
As shown in FIG. 3, the rigid straight member 20 is formed with a rigid ring fitting portion 24 that is notched so as to open to one side in the tube axis direction and into which the rigid ring 17 can be fitted.
In FIG. 3, two rigid rings 17 are depicted, but in addition to the case where two rigid rings 17 are used, there are two connecting portions when the rigid ring 17 is configured by connecting a plurality of members. This corresponds to the case where the wire rods are overlapped.

<Description of pressing point>
As shown in FIG. 2, the inner surface material 3 has three pressing points P <b> 1, P <b> 2, P <b> 3 having a predetermined interval in the pipe circumferential direction, and the first engagement on the plate surface 3 b on the other side of the inner surface material 3. A portion corresponding to the pawl 11 corresponds to the first pressing point P1, and a portion corresponding to the second locking claw 12 on the plate surface 3b corresponds to the second pressing point P2 and the third locking claw 13 on the plate surface 3b. The part is the third pressing point P3, and the locking claws 11, 12, 13 are fitted to the inner surface material fitting portions 21, 22, 23 by pressing the pressing points P1, P2, P3. Can do.

<Detailed description of inner surface material pressing device>
Next, the detailed structure of the inner surface material pressing device will be described with reference to FIGS.

As shown in FIGS. 1A and 1B, the inner surface material pressing device 1A is a flat surface 31a (see FIG. 2) that can come into surface contact with the inner surface material 3. A pressing pad 31 made of a flat plate member having a curved surface, a telescopic cylinder 32 for generating a thrust for pressing the pressing pad 31 against the inner surface material 3, and an inner peripheral surface of the existing pipe 2 A reaction force support 33 that takes force, the pressing pad 31 is disposed on one side in the radial direction inside the existing pipe 2, and the reaction force support 33 is disposed on the other side in the radial direction inside the existing pipe 2. The telescopic cylinder 32 is disposed between the pressing pad 31 and the reaction force support 33.
As the telescopic cylinder 32, an air cylinder that is easy to handle can be suitably used, and the cylinder diameter can be obtained so that the necessary thrust and stroke (extension amount) for pressing the pressing pad 31 against the inner surface material 3 can be obtained. Is about 30 to 100 mm, preferably about 40 to 80 mm, the working pressure (compressor pressure) is about 0.3 to 1 MPa, preferably about 0.5 to 0.8 MPa, and the stroke is about 50 to 500 mm, preferably 100 to 400 mm can be preferably used.
A force of 490 to 1960 N is obtained by the telescopic cylinder 32. If the force is within this range, the engaging claws 11, 12, and 13 of the inner surface material 3 are connected to the corresponding inner surface material fitting portions 21 and 22 of the connecting member 18. , 23, no excessive force is applied, and the inner surface material 3 is not deformed.
As the telescopic cylinder 32, in addition to the air cylinder, for example, an electric cylinder, a hydraulic cylinder, or the like can be used.
Further, the pressing pad 31 can press the pressing points P1, P2, and P3 to fit the locking claws 11, 12, and 13 to the inner surface material fitting portions 21, 22, and 23, respectively. 2 and 3, the dimensions of the openings that open toward the center of the existing pipe 2 of the inner surface material fitting parts 21, 22, and 23 shown in FIGS. 2 and 3 (for example, dimensions in the pipe circumferential direction and the pipe axis direction: about 20 mm) About 60 mm), preferably a large rectangular shape, preferably about 10 to 200 mm, more preferably about 20 to 100 mm in the pipe circumferential direction and the pipe axis direction, respectively. Is preferred.
Here, if the dimension to be formed is less than 10 mm, the workability is lowered due to the time required for alignment. On the other hand, if it exceeds 200 mm, the pressing force is dispersed and the necessary pressing force is obtained. It becomes difficult.

As shown in FIG. 2, the pressing pad 31 and the rod portion 32 a of the telescopic cylinder 32 are connected via a joint 34.
The joint 34 includes a pin 35 having an axis (a horizontal axis in the state shown in FIG. 2) perpendicular to the tube axis direction, and the pressing pad 31 tilts in the tube axis direction around the pin 35. It is possible.
Thereby, even when a slight shift occurs in the relative position between the pressing pad 31 and the reaction force support 33 in the tube axis direction during positioning of the inner surface material pressing device 1A, the pressing pad 31 is securely attached to the inner surface material 3. Can be brought into surface contact.

  As shown in FIGS. 1A and 1B, the reaction force support 33 includes a support rod 36 that is connected to the main body 32b of the telescopic cylinder 32 at one end and extends in the pipe radial direction. A tube pressing member 37 is connected to the other end of the support bar 36.

<Description of support bar>
The support bar 36 includes a support bar main body 38 constituting a main body portion thereof, and a sleeve 39 fitted on the outer peripheral side of the support bar main body 38, and the length thereof can be adjusted.
That is, the axial length of the sleeve 39 relative to the support bar main body 38 makes the length of the entire support bar 36 variable, and the support bar main body 38 is at each of a plurality of positions where the overlapping degree of the support bar main body 38 and the sleeve 39 is different. The fixing pin 40 can be inserted by providing a pin insertion opening in both the sleeve 39 and the sleeve 39, and the fixing pin 40 is inserted at an arbitrary position selected from a plurality of positions where the fixing pin 40 can be inserted. Thus, the length of the support bar 36 is fixed at the selected position.

<Description of tube pressing member>
As shown in FIG. 4, the tube pressing member 37 includes a column member 41 that can be fitted into the end portion of the sleeve 39, and a base member 42 is integrally installed on the column member 41. A leg member 43 arranged between the support portion 42a and the inner peripheral surface of the existing pipe 2 is connected by a connecting pin 44 having an axis parallel to the pipe axis direction.

The leg member 43 is tiltable in the pipe circumferential direction around the connecting pin 44, and is positioned at a relative position between the pressing pad 31 and the pipe pressing member 37 in the pipe circumferential direction when the inner surface material pressing device 1A is positioned. Even if a slight deviation occurs, the leg member 43 can be reliably pressed against the inner peripheral surface of the existing pipe 2.
In order to restrict the tilting of the leg member 43 within a predetermined range, a pair of stoppers 45A and 45B are disposed on the leg member 43 so as to sandwich the pin support portion 42a of the base member 42, so that the leg member 43 When tilted by a predetermined angle to one side of the direction (left side in FIG. 4), the stopper 45A on the other side comes into contact with the pin support portion 42a to stop the movement of the leg member 43, and the leg member 43 is moved to the other side in the pipe circumferential direction ( When tilted by a predetermined angle to the right side in the figure, the stopper 45B on one side comes into contact with the pin support portion 42a and the movement of the leg member 43 is stopped.

  In the tube pressing member 37, the fixing pin 46 can be inserted by providing a pin insertion opening on the sleeve 39 at a predetermined position where the column member 41 is fitted, and the fixing pin 46 can be inserted. Thus, the tube pressing member 37 can be fixed to the sleeve 39 in the mounted state, while the tube pressing member 37 can be removed from the sleeve 39 by the extraction operation of the fixing pin 46.

As shown in FIG. 5, the leg member 43 protrudes outward in the tube axis direction from a pair of leg piece portions 43 a arranged at a predetermined interval in the tube axis direction, and the distal end portion of the leg piece portion 43 a. The leg piece portion 43a and the foot portion 43b are formed in a bifurcated shape that can be pressed against the inner peripheral surface of the existing pipe 2 so as to avoid the inner surface material fixing member 4, When the reaction force is applied to the inner peripheral surface of the existing pipe 2 where the inner surface material fixing member 4 is installed, the inner surface material fixing member 4 is avoided and the reaction force is directly secured to the inner peripheral surface of the existing pipe 2 Can be taken.
More specifically, the leg member 43 has a dimension (for example, a dimension in the pipe radial direction and the pipe axis direction: about 60 mm) of the inner surface material fixing member 4 shown in FIG. 5 so as not to interfere with the inner surface material fixing member 4. On the other hand, it is preferable to form the tube diameter direction and the tube axis direction to be about 10 to 200 mm, preferably 10 to 100 mm larger.
Here, if the dimension to be formed is less than 10 mm, the workability is reduced. On the other hand, if it exceeds 200 mm, it is necessary to cope with the strength of the leg member 43 being reduced.

<Description of inner surface material pressing member>
In the inner surface material pressing apparatus 1A, the tube pressing member 37 attached to the sleeve 39 can be replaced with an inner surface material pressing member 47 as shown in FIG.
This inner surface material pressing member 47 has a configuration in which a pressing block member 48 is adopted instead of the leg member 43 in the tube pressing member 37, and members common to the tube pressing member 37 are given the same reference numerals in the drawing. Detailed description thereof will be omitted, and the difference from the tube pressing member 37, that is, the configuration of the pressing block member 48 will be mainly described.
The pressing block member 48 has a flat surface 48 a that can be brought into surface contact with the inner surface material 3 (it can be a cylindrical curved surface along the surface of the inner surface material 3). In addition, a trapezoidal shape (shown in FIG. 6) widens toward the outer side in the tube radial direction when viewed from the tube axis direction so that the surface pressure is dispersed as widely and uniformly as possible on the plate surface 3b on the other side of the inner surface material 3. The flat surface 48a is the same as or larger than the flat surface 31a of the pressing pad 31, specifically, 1 to 16 times the flat surface 31a of the pressing pad 31. It is formed so as to have a contact area of about 2 times, preferably about 2 to 10 times.

Here, the operation of replacing the tube pressing member 37 mounted on the sleeve 39 as shown in FIG. 4 with the inner surface material pressing member 47 shown in FIG. 6 is performed as follows.
First, from the state shown in FIG. 4 in which the tube pressing member 37 is mounted and fixed to the sleeve 39, the tube pressing member 37 can be removed from the sleeve 39 by the extraction operation of the fixing pin 46.
Next, the tube pressing member 37 is detached from the sleeve 39 so as to be detached.
Next, an inner surface material pressing member 47 is prepared, and the support member 41 of the inner surface material pressing member 47 is fitted into the end portion of the sleeve 39 as shown in FIG. 6, and a fixing pin 46 is inserted and fixed to both at a predetermined insertion position. To do.
The operation of exchanging the inner surface material pressing member 47 attached to the sleeve 39 with the tube pressing member 37 is the same as the procedure for exchanging the tube pressing member 37 to the inner surface material pressing member 47.

The inner surface material fitting operation using the inner surface material pressing device 1A configured as described above will be described below mainly using FIG. 1 and FIG.
The inner surface material fitting operation described below is an example in which the cylindrical body 50 is assembled by sequentially fitting and attaching a total of 15 inner surface materials 3 to the inner surface material fixing member 4 in the pipe circumferential direction.
Further, when the inner surface material 3 is fitted to the inner surface material fixing member 4, the coupling claws 11, 12, and 13 correspond to the inner surface material fitting portions 21, 22, and 23, respectively, with respect to the connecting member 18. The inner surface material 3 is aligned.

As shown in FIGS. 1A and 1B, first, the inner surface material 3 is aligned with the connecting member 18 at the lowest position in the existing pipe 2, and the radial direction on the inner surface material 3 is set. The inner surface material pressing device 1A is arranged along the inner surface material 3 by adjusting the length of the support rod 36 with the pressing pad 31 pressed on the inner surface material 3, for example, on the second pressing point P2 (see FIG. 2), When the position of the inner surface material pressing device 1A relative to the inner surface material 3 is determined, the leg member 43 in the tube pressing member 37 is in contact with or substantially in contact with the inner peripheral surface of the existing tube 2 so as to avoid the inner surface material fixing member 4 The telescopic cylinder 32 is extended.
As a result, the thrust from the telescopic cylinder 32 is transmitted to the pressing pad 31 while pressing the reaction force against the inner peripheral surface of the existing pipe 2 by the reaction force support 33 to press the second pressing point P2 of the inner surface material 3. Thus, the second locking claw 12 can be fitted to the second inner surface material fitting portion 22.
Next, the telescopic cylinder 32 is temporarily contracted to release the pressing force of the pressing pad 31 to the second pressing point P2, and the pressing target is changed to the adjacent first pressing point P1 (see FIG. 2), for example. Then, the same pressing operation as the pressing operation with respect to the second pressing point P <b> 2 is performed to fit the first locking claw 11 to the first inner surface material fitting portion 21.
Then, the same pressing operation as the pressing operation on the first pressing point P1 is performed on the third pressing point P3 (see FIG. 2), and the third locking claw 13 is attached to the third inner surface material fitting portion 23. Fit.
Thus, all the locking claws 11, 12, 13 of the first inner surface material 3 can be fitted to all corresponding inner surface material fitting portions 21, 22, 23 of the connecting member 18. The fitting operation of the inner surface material 3 is completed.

Next, as shown in FIG. 7 (a), from the second sheet to the eight sheets on the basis of the first inner surface material 3 (for convenience of explanation, the reference numeral “3A” is also shown in the figure). By performing a pressing operation similar to the pressing operation performed on the first inner surface material 3 so that the inner surface material 3 up to the eyes is distributed almost equally to one and the other in the pipe circumferential direction, 2 The work of fitting the inner surface material 3 from the first sheet to the eighth sheet is completed.
Then, after the inner surface material 3 is fitted, the inner surface material connecting material 15 (see FIG. 2) is fitted to the fitting portions 14 at the abutting positions of the inner surface materials 3 adjacent to each other in the pipe circumferential direction. The adjacent inner surface materials 3 are sequentially joined together via the inner surface material connecting material 15.
In addition, although the said description is an example which joins the inner surface material connection material 15 after the inner surface material 3 fitting operation | work from the 1st sheet to the 8th sheet, some before an inner surface material fitting operation completion. The inner surface material connecting material 15 can be appropriately joined to the inner surface material 3 that has been fitted after the inner surface material has been fitted.

Next, as shown in FIG. 7B, the reaction force support 33 starts from the fitting operation of the ninth inner surface material 3 (for convenience of explanation, the symbol “3B” is also shown in the drawing). Since the inner surface material 3 that has already been attached is present on the outer side in the pipe radial direction, a reaction force cannot be directly applied to the inner peripheral surface of the existing pipe 2.
Therefore, the pipe pressing member 37 is replaced with the inner surface material pressing member 47, and the pressing block member 48 in the inner surface material pressing member 47 is pressed against the already bonded inner surface material 3, and the existing pipe 2 is connected via the inner surface material 3. The reaction force is indirectly applied to the inner peripheral surface.
In addition, since the construction diameter of the existing pipe 2 becomes small in the fitting operation from the ninth inner surface material, the length of the support rod 36 is appropriately shortened so as to adapt to such a change in construction diameter. Make adjustments.
Then, by performing the pressing operation similar to the pressing operation performed on the inner material 3 from the ninth sheet to the fifteenth sheet to the inner material 3 from the second sheet to the eighth sheet, The fitting work of the inner surface material 3 up to the fifteenth sheet is completed.
In this way, the cylindrical body 50 is formed by the 15 inner members 3, and the curable filler is filled between the cylindrical body 50 and the existing pipe 2 to repair and reinforce the existing pipe 2.

<Description of effects>
According to the inner surface material pressing device 1 </ b> A of the first embodiment, the inner surface material 3 is pressed by the pressing pad 31 that is in surface contact with the inner surface material 3, so that it is required for fitting to the inner surface material fixing member 4. The pressing force can be applied to the inner surface material 3 so as to be equal to or less than a predetermined surface pressure at which the inner surface material 3 is not damaged or deformed, and the inner surface material 3 is not damaged or deformed. Can be pressed.
In addition, since the length of the support rod 36 can be adjusted, even if the construction work of the inner surface material 3 proceeds and the construction diameter of the existing pipe 2 becomes small, it is quickly adapted to such a change in construction diameter. can do.
Further, since the pipe pressing member 37 can be pressed against the inner peripheral surface of the existing pipe 2 while avoiding the inner surface material fixing member 4, the pipe pressing member 37 is also installed at the location where the inner surface material fixing member 4 is installed on the inner peripheral surface of the existing pipe 2. A reaction force can be directly applied to the inner peripheral surface of the tube 2.
Further, since the pipe pressing member 37 can be replaced with the inner surface material pressing member 47 and the inner surface material pressing member 47 can be brought into surface contact with the inner surface material 3, the inner peripheral surface of the existing pipe 2 without damaging the inner surface material 3. The reaction force can be taken indirectly.

[Second Embodiment]
FIG. 8 is a view showing an inner surface material pressing device according to the second embodiment of the present invention, and shows a front view (a) and a side view (b) in an installed state on an existing pipe.
Further, FIG. 9 shows an enlarged view of an E portion in FIG. 8A, and FIG. 10 shows an enlarged view of an F portion in FIG. 8A.
In addition, in the inner surface material pressing apparatus 1B of the second embodiment, the same or similar parts as those of the inner surface material pressing apparatus 1A of the first embodiment are given the same reference numerals and detailed description thereof is omitted. In the following, description will be made centering on the parts specific to the inner surface material pressing device 1B of the second embodiment (the same applies to the third embodiment described later).

As shown in FIGS. 8A and 8B, the inner surface material pressing device 1B according to the second embodiment is identical to the inner surface material pressing device 1A according to the first embodiment in the device main body 51 having the same basic configuration. The gantry 52 and the positioning mechanism 53 are added.
An extension rod 54 is interposed between the rod portion 32 a of the telescopic cylinder 32 and the joint 34.
Thereby, the height position of the expansion / contraction cylinder 32 in the inner surface material pressing apparatus 1B of the second embodiment is extended by the extension rod 54 more than the height position of the expansion / contraction cylinder 32 in the inner surface material pressing apparatus 1A of the first embodiment. It's just a minute higher.

<Description of the mount>
The gantry 52 supports the support rod 36 so as to be rotatable in the tube circumferential direction around the portion of the support rod 36 through which the tube axis center line Os passes, and has a predetermined interval in the tube axis direction. There is provided a gantry body 52 a formed by connecting required portions of a pair of alignment plates 55 arranged so as to sandwich 32 with a connecting bar 56.
A pair of inverted V-shaped shaft support brackets 52b arranged at a predetermined interval in the tube axis direction are disposed on the top of the gantry body 52a, and shaft insertion holes are formed at the tops of the respective shaft support brackets 52b. The shaft support brackets 52b are fixed to the alignment plates 55 so that the shaft insertion holes of the pair of shaft support brackets 52b are coaxial with the tube axis center line Os.

A rotation operation shaft 57 is attached to the shaft insertion holes in the pair of shaft support brackets 52b via a bearing (not shown) so as to be rotatable about the tube axis center line Os.
The rotation operation shaft 57 includes a first shaft 57a inserted into one shaft insertion hole in the pair of shaft support brackets 52b, a second shaft 57b inserted into the other shaft insertion hole in the pair of shaft support brackets 52b, and a support rod. A cylindrical center guide 57c fitted on the outer peripheral side of the main body 38 is provided, and the first shaft 57a and the second shaft 57b are joined via the center guide 57c.
An operation handle 58 is inserted into the second shaft 57b of the rotation operation shaft 57 so as to be orthogonal to the second shaft 57b, and the rotation operation shaft 57 is rotated by operation of the operation handle 58, whereby the support rod 36 is inserted. The device main body 51 can be rotated in the tube circumferential direction with the portion through which the tube axis center line Os passes as the rotation center.

As shown in FIG. 9, at the lower part of the gantry body 52a, an inner surface that engages with the fitting portion 14 of the inner surface material 3 to guide the inner surface material pressing device 1B to a predetermined position in the circumferential direction on the inner surface material. A material guide wheel 59 is attached.
In addition, an access opening 60 is formed in the gantry body 52a by making a required region of the lower half of the alignment plate 55 into a rectangular shape, and the peripheral portion of the pressing pad 31 is formed through the access opening 60. Can be easily accessed.

<Description of positioning mechanism>
As shown in FIG. 10, the positioning mechanism 53 includes a guide slit 68 formed in the upper half portion of the alignment plate 55, and a guide bar that is attached to the main body portion 32 b of the telescopic cylinder 32 and engages with the guide slit 68. 69.
The guide slit 68 includes a horizontal slit 70 formed so as to extend in the horizontal direction, and the first vertical slit 71, the second vertical slit 72, and the second vertical slit 70 are respectively provided from one end, the middle, and the other end of the horizontal slit 70. Three longitudinal slits 73 are formed so as to extend upward and are formed in a mountain shape.
Here, the second vertical slit 72 is opened linearly along the center line L <b> 2 of the apparatus main body 51.
The first vertical slit 71 is along a center line L1 that is shifted from the center line L2 of the apparatus main body 51 by a predetermined angle θ to one side in the pipe circumferential direction around the tube axis center point on the tube axis center line Os. It is opened linearly.
The third vertical slit 73 is opened linearly along a center line L3 that is shifted by a predetermined angle θ from the center line L2 of the apparatus main body 51 to the other side in the tube circumferential direction around the center point of the tube axis.
In this way, when the center lines L1, L3 are shifted from the center line L2 by a predetermined angle θ around the tube axis center point, the center lines L1, L2, L3 intersect at the tube axis center point. Then, since the center lines L1, L2, and L3 serve as axes extending in the radial direction, the axis of L1, L2, and L3 is a plate surface on one side of the inner surface material 3 at the positions of the respective pressing points P1, P2, and P3. And can be pressed efficiently. It should be noted that the L1, L2, and L3 axes may be slightly shifted.
A notch 70a that is notched in a mountain shape is formed in the middle portion of the horizontal slit 70 toward the opposite side of the second vertical slit 72, and a part of the guide bar 69 is hooked into the notch 70a. Thus, the apparatus main body 51 can be easily positioned at the reference position with respect to the gantry 52.

In the positioning mechanism 53, the pressing pad 31 can be positioned to the second pressing point P2 by moving the guide bar 69 along the second vertical slit 72 at the reference position of the apparatus main body 51.
Further, by operating the operation handle 58, the apparatus main body 51 is rotated from the reference position to one side in the pipe circumferential direction by a predetermined angle θ around the pipe axis center line Os, and the guide bar 69 is moved along the first vertical slit 71. By doing so, the pressing pad 31 can be positioned to the first pressing point P1.
Further, by operating the operation handle 58, the apparatus main body 51 is rotated from the reference position to the other side in the pipe circumferential direction by a predetermined angle θ around the pipe axis center line Os, and the guide bar 69 is moved along the third vertical slit 73. By doing so, the pressing pad 31 can be positioned to the third pressing point P3.

<Description of effects>
According to the inner surface material pressing device 1B of the second embodiment, it is possible to obtain the same effect as the inner surface material pressing device 1A of the first embodiment. Since the position in the circumferential direction of the inner surface material pressing device 1B is defined, a plurality of pressing points that are predetermined positions of the inner surface material are determined by the rotation operation of the device main body 51 and the positioning operation of the device main body 51 by the positioning mechanism 53. Since P1, P2, and P3 can be sequentially pressed by the pressing pad 31, a plurality of pressing points P1, P2, and P3 can be accurately set only by a single telescopic cylinder 32 as a thrust generating means for pressing the inner surface material 3. Can be pressed. Therefore, the weight of the apparatus can be reduced, and for example, the plurality of pressing points P1, P2, and P3 can be accurately pressed even against the inner surface material 3 in a place with poor visibility under running water.

[Third Embodiment]
FIG. 11 shows a front view of an installed state of an existing pipe of an inner surface material pressing device according to the third embodiment of the present invention, and FIG. 12 shows an enlarged view of part G of FIG.

  As shown in FIGS. 11 and 12, the inner surface material pressing device 1 </ b> C according to the third embodiment has a plurality of pressings that are in surface contact with each of the plurality of pressing points P <b> 1, P <b> 2, P <b> 3 on the inner surface material 3. Pads 81A, 81B, 81C, a plurality of telescopic cylinders 82A, 82B, 82C that generate thrust for pressing the plurality of pressing pads 81A, 81B, 81C against the corresponding plurality of pressing points P1, P2, P3, and existing pipes 2 and a reaction force support 83 that takes a reaction force against the inner peripheral surface of the existing pipe 2, while taking a reaction force with the reaction force support 83 against the inner peripheral surface of the existing pipe 2 from each of the telescopic cylinders 82A, 82B, 82C. The thrust is transmitted to the pressing pads 81A, 81B, 81C to press the pressing points P1, P2, P3 on the inner surface material 3.

Here, a plurality of pressing pads 81A, 81B, 81C, that is, the first pressing pad 81A with respect to the plurality of pressing points P1, P2, P3, that is, the first pressing point P1, the second pressing point P2, and the third pressing point P3. The second pressing pad 81B and the third pressing pad 81C correspond to each other.
The first telescopic cylinder 82A generates a thrust for pressing the first pressing pad 81A against the first pressing point P1, and generates a thrust for pressing the second pressing pad 81B against the second pressing point P2. Is the second telescopic cylinder 82B, and the third telescopic cylinder 82C generates a thrust for pressing the third press pad 81C against the third press point P3.

The first telescopic cylinder 82A and the third telescopic cylinder 82C are both disposed on one side in the pipe radial direction inside the existing pipe 2, while the second telescopic cylinder 82B is arranged in the pipe radial direction inside the existing pipe 2. The other side is arranged in series with the reaction force support 83 along the tube radial direction, and the expansion and contraction of the expansion cylinders 82A, 82B, 82C is such that the thrust action lines LA, LB, LC intersect on the tube axis center line. Cylinders 82A, 82B, and 82C are arranged.
Thus, when the thrust action lines LA, LB, LC intersect on the tube axis center line, the tube axis center line LA, LB, LC becomes an axis extending in the radial direction, so that the axes of LA, LB, LC are respectively It intersects perpendicularly with the plate surface on one side of the inner surface material 3 at the positions of the pressing points P1, P2, P3, and can be pressed efficiently. It should be noted that the LA, LB, and LC axes may be slightly shifted.

The main body part 82b of the second telescopic cylinder 82B and the second pressing pad 81B are connected by an extension bar 84.
The extension rod 84 is connected to the second pressing pad 81B and extends in the tube diameter direction, and is connected to the main body portion 82b of the second telescopic cylinder 82B and extends in the tube diameter direction. The second extension rod 86 and a sleeve 87 connecting the extension rods 85 and 86 are provided, and the length thereof can be adjusted.
That is, the length of the extension rod 84 is variable by the axial movement of the first extension rod 85 or the second extension rod 86 with respect to the sleeve 87, and a plurality of sleeves 87 and extension rods 85, 86 are overlapped at different degrees. In each of the positions, the fixing pin 88 can be inserted by providing a pin insertion opening in each of the extension rods 85 and 86 and the sleeve 87, and the position is selected from a plurality of positions where the fixing pin 88 can be inserted. By inserting the fixing pin 88 at an arbitrary position, the length of the extension rod 84 is fixed at the selected position.

  The first telescopic cylinder 82A and the third telescopic cylinder 82C are fixed to the sleeve 87 through the alignment plate 89 in the predetermined arrangement described above.

  The reaction force support 83 includes a cylindrical support rod 90 that is connected to the rod portion 82a of the second telescopic cylinder 82B at one end and extends in the tube radial direction. The member 37 is connected.

  As shown in FIG. 12, inner surface material guide members 91 </ b> A and 91 </ b> B are attached to the second pressing pad 81 </ b> B to engage the fitting portion 14 in the inner surface material 3 and guide the inner surface material 3.

<Description of effects>
According to the inner surface material pressing apparatus 1C of the third embodiment, a plurality of inner surface materials 3 are provided by a plurality of pressing pads 81A, 81B, 81C that are in surface contact with each of the plurality of pressing points P1, P2, P3. Since the pressing points P1, P2, and P3 are pressed, the inner surface material is subjected to a pressing force required for fitting to the inner surface material fixing member 4 in the same manner as the inner surface material pressing devices 1A and 1B of the above embodiments. 3 can be made to act on the inner surface material 3 so as to be equal to or less than a predetermined surface pressure that does not cause damage or deformation, and the inner surface material 3 can be pressed without damaging or deforming the inner surface material 3. .
Moreover, since the position of the circumferential direction of the inner surface material 3 and the inner surface material pressing device 1C is defined by the inner surface material guide members 91A and 91B, for example, a plurality of inner surface materials 3 in a place with poor visibility under running water are also provided. The pressing points P1, P2, and P3 can be accurately pressed in the circumferential direction.
As long as the guide member can be slidably guided in the tube axis direction, the tip of the wheel type of the second embodiment, the projection type of the third embodiment, or the locking claw of the fitting portion 14 bulges out. It may be of a type that holds the base of the ridge between two members so as to be slidable. Moreover, the guide part can also be made to respond | correspond suitably to the shape of a groove | channel, for example, as a shape corresponding to the fitting part 14, the protrusion and wheel which can be inserted in the both sides of a latching claw can also be used.
Further, since the plurality of pressing points P1, P2, P3 of the inner surface material 3 can be pressed at once by the plurality of pressing pads 81A, 81B, 81C, the efficiency of the fitting operation of the inner surface material 3 can be significantly improved. it can.

<Explanation of detection means for confirming fitting state of inner surface material to inner surface material fixing member>
By the way, in the said 1st-3rd embodiment, the detection sensor (illustration omitted) which detects the position of the inner surface material fixing member 4 is arrange | positioned in the press pads 31 and 81A-81C (press pad 31, 81A-81C). The detection sensor may be disposed on the contact surface side with respect to the inner surface material 3, or the press pads 31, 81A to 81C may be configured by the detection sensor itself.
More specifically, an electromagnetic induction type sensor capable of detecting the position of the rigid ring 17 made of a reinforcing bar constituting the inner surface material fixing member 4 can be suitably used as the detection sensor.
Thereby, the positional relationship between the inner surface material 3 and the inner surface material fixing member 4 pressed by the pressing pads 31, 81A to 81C can be detected, and the fitting state of the inner surface material 3 to the inner surface material fixing member 4 is confirmed. be able to.
In this case, the confirmation of the fitting state of the inner surface material 3 to the inner surface material fixing member 4 is performed by detecting the distance between the sensor and the rigid ring 17 made of reinforcing bars, and the inner surface material 3 is predetermined with respect to the rigid ring 17 by this distance. Whether or not it has been pressed to the position can be confirmed by confirming the display of a display (not shown) that displays the output of the sensor, and the inner surface material 3 expands and contracts together with the display of the display as necessary. The operator may be notified by sound or the like that the actuator has been pushed to a predetermined position via the cylinders 32, 82A to 82C (the distance between the sensor and the rigid ring 17 made of rebar is less than a predetermined distance) It is also possible to automatically control the operation of 32, 82A to 82C.

As mentioned above, although the inner surface material pressing apparatus of this invention was demonstrated based on several embodiment, this invention is not limited to the structure described in the said embodiment, The structure described in each embodiment is combined suitably. For example, the configuration can be changed as appropriate without departing from the spirit of the invention.
For example, in this embodiment, an annular ring is used for the rigid ring, but a spiral ring can also be used.

  The inner surface material pressing device of the present invention has a characteristic that the inner surface material can be pressed without damaging or deforming the inner surface material, so that repair of existing pipes such as aging sewer pipes is performed. In addition to being suitable for use in the lining work of the inner surface material used in the case of, for example, it can also be used for the lining work of the inner surface material used when finishing the inner surface of the new pipe, It can be suitably used when the inner surface material is made of synthetic resin.

1A-1C Inner surface material pressing device 2 Existing pipe 3 Inner surface material 4 Inner surface material fixing member 31, 81A-81C Press pad 32, 82A-82C Telescopic cylinder 33, 83 Reaction force support body 36 Support rod 37 Pipe pressing member 47 Inner surface material pressing Member 52 Base 53 Positioning mechanism 84 Extension rod

Claims (9)

  An inner surface material pressing device that presses the inner surface material in order to fit the inner surface material to an inner surface material fixing member installed on the inner peripheral surface of the pipe, the pressing pad being in surface contact with the inner surface material, and a press It has a telescopic cylinder that generates thrust to press the pad against the inner surface material, and a reaction force support that takes a reaction force against the inner peripheral surface of the pipe. An inner surface material pressing device, wherein the inner surface material is pressed by transmitting a thrust force from the expansion / contraction cylinder to the pressing pad.   2. The inner surface material pressing device according to claim 1, wherein the reaction force support includes a support bar extending in a pipe radial direction, and the length of the support bar is adjustable.   A support for rotatably supporting the support bar in the pipe circumferential direction around the portion of the support bar through which the tube axis center line passes, and a pressing pad for each of a plurality of pressing points existing in the pipe circumferential direction of the inner surface material The inner surface material pressing according to claim 1, further comprising: a positioning mechanism for positioning, wherein each pressing point can be sequentially pressed with a pressing pad by a rotation operation of the support bar and a positioning operation by the positioning mechanism. apparatus.   An inner surface material pressing device that presses a plurality of pressing points existing in the pipe circumferential direction of the inner surface material in order to fit the inner surface material to the inner surface material fixing member installed along the inner peripheral surface of the pipe, A plurality of pressing pads that are brought into surface contact with each of a plurality of pressing points in the inner surface material, a plurality of expansion cylinders that generate thrust to press the plurality of pressing pads against the corresponding pressing points, and a tube A reaction force support that takes a reaction force against the inner peripheral surface, and transmits the thrust from each telescopic cylinder to each pressing pad while taking a reaction force against the inner peripheral surface of the tube with the reaction force support. An inner surface material pressing device, wherein each pressing point is pressed.   A plurality of expansion / contraction cylinders are distributed and arranged on one side and the other side in the tube diameter direction, and the expansion / contraction cylinders are arranged so that the thrust action lines of the expansion / contraction cylinders intersect on the tube axis center line The inner surface material pressing device according to claim 4.   The extension cylinder connected in series with the reaction force support along the tube diameter direction and the pressing pad are connected with an extension rod extending in the tube diameter direction, and the length of the extension rod can be adjusted. The inner surface material pressing device according to claim 5.   The reaction force support body is provided with a tube pressing member that can be pressed against the inner peripheral surface of the pipe while avoiding the inner surface material fixing member, and the reaction force is directly applied to the inner peripheral surface of the pipe via the tube pressing member. The inner surface material pressing device according to claim 1, 2, 3, 4, 5 or 6.   The tube pressing member can be replaced with an inner surface material pressing member that can be pressed by surface contact with the inner surface material already fitted to the inner surface material fixing member, and the reaction force support is interposed between the inner surface material pressing member and the inner surface material. The inner surface material pressing device according to claim 7, wherein a reaction force is indirectly applied to the inner peripheral surface of the pipe.   9. The inner surface material pressing according to claim 1, wherein a detection sensor for detecting a position of the inner surface material fixing member is disposed on the pressing pad. apparatus.

Images