JP7586389B2 - Inner surface material fitting device and inner surface material fitting method - Google Patents

Description

The present invention relates to an inner surface material fitting device used to line the inner surface side of a pipe with an inner surface material, for example, for repairing an existing pipe or finishing the inner surface of a newly installed pipe, and in particular to an inner surface material fitting device and inner surface material fitting method used to fit an inner surface material to an inner surface material fixing member installed on the inner surface of a pipe.

Conventionally, a repair method for existing pipes involves installing an inner surface material fixing member made of a rigid ring or rigid straight material on the inner surface of the existing pipe, sequentially arranging inner surface materials fitted to the inner surface material fixing member in the circumferential direction of the existing pipe to form a cylindrical body, and filling the space between the cylindrical body and the existing pipe with a hardening filler to repair and reinforce the existing pipe (see Patent Document 1).

In the above-mentioned repair method for existing pipes using a lining body, in order to fit the inner surface material to the inner surface material fixing member, the inner surface material needs to be pressed against the inner surface material fixing member. The applicants of this application have previously proposed an inner surface material fitting device used to press the inner surface material to fit the inner surface material to the inner surface material fixing member (see Patent Document 2).

This inner surface material pressing device is an inner surface material fitting device used to fit an inner surface material having an internal engagement claw and a groove on the surface extending in the longitudinal direction of the tube to an inner surface material fixing member installed on the inner peripheral surface of a tube, and is equipped with a moving body that moves in the longitudinal direction of the tube, a pressure transmission unit that is provided on the moving body and presses the surface of the inner surface material against the inner surface material fixing member, and an insertion sliding unit that is provided behind the pressure transmission unit of the moving body and moves along the groove of the inner surface material and engages with the engagement claw formed in the groove to obtain a reaction force.The moving body moves in the longitudinal direction of the tube by being guided by the insertion sliding unit, while obtaining a reaction force from the insertion sliding unit, and the pressure transmission unit presses the surface of the inner surface material against the inner surface material fixing member, thereby fitting the inner surface material to the inner surface material fixing member.

JP 2006-316539 A JP 2018-123855 A JP 2017-198305 A

The inner surface material pressing device described in Patent Document 2 allows the work of fitting an inner surface material to an inner surface material fixing member installed on the inner surface of a pipe to be performed efficiently, safely, and reliably without the need for an operator to enter the pipe, and has the advantage of being applicable to small diameter pipes (nominal diameter: 800 to 1000 mm or less). However, there is a problem in that the device becomes large-scale because the pressing section that presses the surface of the inner surface material against the inner surface material fixing member requires the moving body to be equipped with an actuator such as an air cylinder and an expansion and contraction mechanism such as a screw mechanism such as a turnbuckle.

In view of the problems with the above-mentioned conventional inner surface material pressing devices, the present invention aims to provide an inner surface material fitting device and an inner surface material fitting method that does not require a driving unit such as an extension mechanism, is compact, and can easily fit an inner surface material to an inner surface material fixing member installed on the inner surface of a pipe with little force even when the worker enters the pipe to perform the work.

In order to achieve the above object, the inner surface material fitting device of the present invention comprises:
An inner surface material fixing member is fixed inside the pipe and has a fitting portion on the pipe center side.
An inner surface material having a fitting portion on the inner surface side of the pipe that fits into the fitting portion of the inner surface material fixing member and a locking portion on the pipe center side that extends in the pipe axial direction,
An inner surface member fitting device for fitting while moving in the pipe axial direction,
A locking portion that locks onto the locked portion of the inner surface material;
a pressing portion provided forward of the locking portion in the pipe axial direction and capable of pressing the inner surface material;
A pressure applying portion is provided on the front side and the pipe center side of the pressing portion.
It is characterized by:
Here, the locked portion extending in the tube axial direction includes not only a portion that extends continuously but also a portion that extends intermittently.

In this case, the distance from the pressure applying portion to the pressing portion can be greater than the distance from the pressing portion to the locking portion.

The length of the engaging portion can be equal to or greater than the length of the fitted portion of the inner surface material fixing member.

In order to achieve the same object, a method for fitting an inner surface material using the inner surface material fitting device of the present invention comprises the steps of:
An inner surface material fixing member is fixed inside the pipe and has a fitting portion on the pipe center side.
An inner surface material having a fitting portion on the inner surface side of the pipe that fits into the fitting portion of the inner surface material fixing member and a locking portion on the pipe center side that extends in the pipe axial direction,
A method for fitting an inner surface material using an inner surface material fitting device for fitting an inner surface material while moving in a pipe axial direction, comprising the steps of:
The inner surface material fitting device is
A locking portion that locks onto the locked portion of the inner surface material;
a pressing portion provided forward of the locking portion in the pipe axial direction and capable of pressing the inner surface material;
A pressure applying portion is provided on the front side and the pipe center side of the pressing portion,
In a state where the locking portion is positioned in the vicinity of a locked portion of an inner surface material already fitted to the inner surface material fixing member, the pressurizing portion is pressed against the inner surface side of the pipe, so that the pressing portion presses the vicinity of the fitted portion of the unfitted inner surface material.
It is characterized by:
Here, the locked portion extending in the tube axial direction includes not only a portion that extends continuously but also a portion that extends intermittently.

The inner surface material fitting device and inner surface material fitting method of the present invention do not require a driving unit such as an extension mechanism, so the device is compact and the work of fitting the inner surface material to the inner surface material fixing member installed on the inner surface of the pipe can be easily performed with little force by using the lever principle even when the worker enters the pipe to perform the work.

In addition, by making the distance from the pressure applying part to the pressing part greater than the distance from the pressing part to the locking part, for example, when an operator enters the pipe to perform the task of fitting the inner surface material to the inner surface material fixing member installed on the inner surface of the pipe, the task can be performed easily with less force.

Furthermore, by making the length of the engaging portion equal to or greater than the length of the fitted portion of the inner material fixing member, even if the alignment of the engaging portion with the position of the fitted portion of the inner material fixing member is rough, a stable reaction force can be obtained from the inner material fixing member via the inner material.

1A and 1B show an example of an inner layer structure of a pipe using a skeletal structure for mounting an inner surface material, where (a) is a cross-sectional view (connecting spacers are omitted), and (b) is a cross-sectional view of a main part. 1A, 1B, 1C and 1D show a fixing member used in the inner material mounting framework, in which FIG. 11A to 11D show modified examples of fixing members used in the inner surface material mounting framework, with (a1) to (d1) being side views and (a2) to (d2) being front views. 1 shows a connecting spacer used in the same skeletal structure for attaching an inner surface material, where (a) is a plan view, (b) is a front view, (c) is a plan view showing the connecting spacer attached to a fixing member (partially seen through the fixing member), and (d) is a front view thereof. 1 is a front view showing a first embodiment of an inner surface material fitting device of the present invention; 5A and 5B show the inner surface material fitting device, in which FIG. 5A is a left side view and FIG. 4A and 4B show a guide of the inner surface material fitting device, in which FIG. FIG. 4 is a front view showing a second embodiment of the inner surface material fitting device of the present invention. 9A is a left side view of the inner surface material fitting device, and FIG. 9B is a sectional view taken along the line AA of FIG. 8. 4A and 4B show a guide of the inner surface material fitting device, in which FIG. FIG. 11 is a front view showing a third embodiment of the inner surface material fitting device of the present invention. FIG. 13 is a front view showing a fourth embodiment of the inner surface material fitting device of the present invention. 13A is a left side view of the inner surface material fitting device, and FIG. 13B is a sectional view taken along the line AA of FIG. 12. 4A and 4B show a guide of the inner surface material fitting device, in which FIG. FIG. 13 is a front view showing a fifth embodiment of the inner surface material fitting device of the present invention.

The following describes an embodiment of the inner surface material fitting device and inner surface material fitting method of the present invention with reference to the drawings.

First, an example of an inner surface material and an inner surface material mounting frame structure to which the inner surface material mounting device and inner surface material mounting method of the present invention are applied will be described with reference to Figures 1 to 4.

<Description of inner material>
The inner surface material 21 is used in combination with a fastener 22 to form the inner surface material structure 2, and is made of, for example, a strip-shaped member made of synthetic resin extending along the longitudinal direction of the pipe P, and is provided with a groove 21a on its surface extending in the longitudinal direction of the pipe P.
That is, the inner surface material structure 2 comprises an inner surface material 21 which is fitted and attached to the inner surface material fixing member 4, and fasteners 22 which connect adjacent inner surfaces 21 attached to the inner surface material fixing member 4 together.
The inner surface material 21 is provided with a groove 21a for attaching the fastener 22, and an engaging claw 21b for engaging with the fastener 22 is formed inside the groove 21a. The inner surface material 21 is also formed with a fitting portion 21c that is fitted into an inner surface material mounting portion 42 formed on the inner surface material fixing member 4.

<Explanation of the framework for mounting the inner surface material>
Here, as the framework structure for mounting the inner surface material 21, those described in Patent Documents 2 and 3 can be applied.
The main parts of this skeletal structure are ring-shaped support members 3 arranged along the inner surface of the pipe P at intervals in the longitudinal direction of the pipe P, inner surface material fixing members 4 which have a fitting portion 41 on the back side for attachment along the ring-shaped support members 3 and an inner surface material mounting portion 42 on the front side for attaching the inner surface material 21, and connecting spacers 5 which are attached along the longitudinal direction of the pipe P via the inner surface material fixing members 4 and thereby determine the distance between adjacent ring-shaped support members 3.

The ring-shaped support member 3 is a ring-shaped support member, and its outer shape when viewed from the longitudinal direction of the pipe P is circular, but any shape, such as rectangular, polygonal, arched, etc., can be used depending on the shape of the pipe P and the shape of the inner layer structure to be constructed.
It is preferable to use iron bars or deformed bars for the ring-shaped support member 3, but it is also possible to use rod-shaped members or hollow bodies (pipe members) with a square or polygonal cross-sectional shape, and it is also possible to use members made of synthetic resins or composite materials other than metal members.

As shown in FIG. 2, the inner surface material fixing member 4 has a fitting portion 41 on the back side for mounting along the ring-shaped support member 3, and an inner surface material mounting portion 42 on the front side for mounting the inner surface material 21, and is made of a molded product made of synthetic resin or metal.
Here, the fitting portion 41 of the inner surface material fixing member 4 is formed with protrusions 41a, 41b to prevent the fitting portion 41 of the inner surface material fixing member 4 fitted into the ring-shaped support member 3 from coming off.

2 and 4, the inner surface material fixing member 4 is formed with an insertion space 43 having a rectangular cross section for inserting the connecting spacer 5 therethrough, and the connecting spacer 5 inserted into this insertion space 43 can be fixed via a fitting portion 51 formed on the connecting spacer 5 so as not to slide in the insertion direction relative to the inner surface material fixing member 4. Note that the insertion space 43 is provided with a receiving piece 43a for supporting the underside of the connecting spacer 5 inserted into the insertion space 43, as necessary.
This makes it possible to easily attach the connecting spacer 5 to the inner surface material fixing member 4.

Here, the connecting spacer 5 which is adapted to be attached to the inner surface material fixing member 4 and the connecting spacer 5 which is adapted to be attached to the inner surface material fixing member 4 on the adjacent ring-shaped support member 3 side are connected by connecting portions 52a, 52b provided on the connecting spacer 5.
The connecting portion 52b of the connecting spacer 5 is formed in a stepped shape so that its width is greater than other portions, so that the connecting spacer 5 inserted into the insertion space 43 of the inner surface material fixing member 4 stops at this position, and a locking claw 51a is formed at the intermediate position of the connecting spacer 5 to abut against the opening edge on the opposite side of the insertion space 43 of the connecting spacer 5, thereby forming the fitting portion 51 of the connecting spacer 5.
Thereby, by connecting the connecting spacers 5 to each other, the distance between the adjacent ring-shaped support members 3 can be determined.
It should be noted that the means for fixing the connecting spacer 5 so as not to slide in the insertion direction relative to the inner surface material fixing member 4 is not limited to this, and any fixing method can be adopted, such as, for example, forming locking claws 51a on both sides of the fitting portion 51 so that the connecting spacer 5 can be inserted into the inner surface material fixing member 4 from either side (in this case, the width of the connecting portion 52b provided on the connecting spacer 5 is made the same as other portions), forming a fitting portion on the inner surface material fixing member 4 side that fits into the connecting spacer 5, or forming pin holes at predetermined positions in the inner surface material fixing member 4 and the connecting spacer 5 and inserting fixing pins into the pin holes.
In addition, the locking claw 51a can be formed on the side surface of the connecting spacer 5 at the middle position, or it can be formed on the upper surface of the connecting spacer 5 at the middle position, and the position for forming the fitting portion 51, including the locking claw 51a, can also be freely set.

Furthermore, it is not necessary to insert and attach the connecting spacers 5 into all of the insertion spaces 43 of the inner surface material fixing members 4 attached along the ring-shaped support members 3, but rather it is possible to selectively insert and attach them at several locations, for example, two locations at symmetrical positions on either side of the bottom end position of the inner surface of the pipe P and one location at the top end position, as necessary to determine the distance between adjacent ring-shaped support members 3.
Furthermore, if necessary, a reinforcing member (not shown) made of an iron bar, deformed steel bar, etc. can be inserted into the insertion space 43 where the connecting spacer 5 is not inserted and attached along the longitudinal direction of the pipe P.
This reinforcing member is embedded in the hardening material 6 that fills the annular gap defined by the inner peripheral surface of the pipe P and the inner surface material 21, thereby increasing the strength of the pipe P.

The inner surface material fixing member 4 is provided so that its bottom surface 44 is in contact with the inner peripheral surface of the pipe P.
This allows the ring-shaped support member 3, which is provided along the inner surface of the pipe P, to be stably installed via the inner surface material fixing member 4.
Here, it is not necessary for all of the inner material fixing members 4 to be grounded to the inner surface of the pipe P; as long as the ring-shaped support member 3 can be stably installed via the inner material fixing members 4, it is sufficient that any of the inner material fixing members 4 attached along the ring-shaped support member 3 at any position thereof is grounded.

In this case, as shown in FIG. 3, multiple types of inner surface material fixing members 4 with appropriately set dimensions Ha-Hd from the fitting portion 41 to the bottom surface 44 of the inner surface material fixing member 4 can be prepared and selected for use. In other words, by using an inner surface material fixing member 4 with dimensions Ha-Hd equal to the difference between the radius of the pipe P and the radius of the ring-shaped support member 3, the bottom surface 44 of the inner surface material fixing member 4 can be made to contact the inner surface of the pipe P, and the center of the ring-shaped support member 3 can be aligned with the center of the pipe P. This makes it possible to make the thickness of the layer of hardening material 6 filled in the annular gap partitioned by the inner surface of the pipe P and the inner surface material 21 uniform in the circumferential direction, and to construct a strong and stable inner layer structure of the pipe P.

In this way, according to the skeletal structure for attaching the inner surface material 21, the structure is made up of ring-shaped support members 3 arranged along the inner surface of the pipe P at intervals in the longitudinal direction of the pipe P, an inner surface material fixing member 4 having a fitting portion 41 on the back side for attaching along the ring-shaped support member 3 and an inner surface material mounting portion 42 on the front side for attaching the inner surface material 21, and a connecting spacer 5 that is attached along the longitudinal direction of the pipe P via the inner surface material fixing member 4 to define the distance between adjacent ring-shaped support members 3. By this, the connecting spacer 5 attached along the longitudinal direction of the pipe P via the inner surface material fixing member 4 can accurately define the distance between adjacent ring-shaped support members 3, and the inner surface material fixing member 4 can be easily fixed to the ring-shaped support member 3, which makes it possible to precisely arrange the inner surface material 21 via the inner surface material fixing member 4, while simplifying the installation work by eliminating the labor of assembling the components.

Next, we will explain the inner surface material fitting device and inner surface material fitting method of the present invention.

[First embodiment]
<Description of the inner surface material fitting device>
5 to 7 show a first embodiment of the inner surface material fitting device of the present invention.
This inner material fitting device 1 is fixed within a pipe P, and is used to fit an inner material 21, which has an inner material mounting portion 42 (fitted portion) of the inner material fixing member 4 on the pipe inner surface side and an engaging claw 21b (locked portion) of a groove 21a extending in the pipe axial direction on the pipe core side, to an inner material fixing member 4 which is fixed within the pipe P and has an inner material mounting portion 42 (fitted portion) on the pipe core side, while moving in the pipe axial direction. The device has a guide 11 (locking portion) which locks with the engaging claw 21b (locked portion) of the groove 21a of the inner material 21, a connector 12 (pressing portion) which is provided forward in the pipe axial direction (on the movement direction side of the inner material fitting device 1 (the same applies hereinafter in this specification)) of the guide 11 (locking portion) and which is capable of pressing the inner material 21, and a connector piece 13 (pressing portion) which is provided forward of the connector 12 (pressing portion) and on the pipe core side.

In this case, the guide 11 (engaging portion) is made of a plate member made of metal such as aluminum, and is provided at its lower edge with an engaging claw 11a that fits into a groove 21a of the inner surface material 21 and engages with an engaging claw 21b (engaged portion).
The guide 11 (engagement portion) is made up of two pieces and is arranged side by side in accordance with the spacing of the engaging claws 21b (engaged portion) of the groove 21a of the inner surface material 21 via a connecting member 14a made of a tubular member (this tubular member is made of metal such as stainless steel as shown in this embodiment, and in addition to a pipe material with an irregular cross-sectional shape, a pipe material other than a metal pipe material or a pipe material with a round cross-sectional shape or the like can be used; the same applies to the "tubular member" below). The connecting member 14a is fixed in place by a bolt 14b.
In this manner, the guide 11 (locking portion) is made up of two pieces and is locked at two points, so that the reaction force is stably applied.
In this embodiment, the engaging claws 11a of the guide 11 (locking portion) are fixed claws, but they can also be configured as movable claws that can move in the pipe circumferential direction to release the lock relative to the engaging claws 21b (locked portion) of the grooves 21a of the inner surface material 21. This ensures a clearance between the engaging claws 11a of the guide 11 (locking portion) and the engaging claws 21b (locked portion) of the grooves 21a of the inner surface material 21 when the inner surface material fitting device 1 is moved, allowing smooth movement.
In addition, in this embodiment, the number of components of the guide 11 (locking portion) is two, but the number can be changed appropriately to match the number of engaging claws 21b (locked portion) of the groove 21a of the inner surface material 21.

Two connectors 15a made of a metal such as stainless steel are attached to the connecting member 14a at a distance from each other, and a connector 12 (pressing portion) made of a metal such as stainless steel is attached to each connector 15a via a connecting rod 15b made of a tubular member approximately 200 mm long, and a connector piece 13 (pressure portion) made of a metal such as stainless steel is further attached to each connector 15a via a connecting rod 15c made of a tubular member, so that the overall structure presents a roughly ``L'' shape.
This allows the pressure force from the connector piece 13 (pressure applying portion) to be transmitted directly downward, and the fitting portion 21c of the inner surface material 21 can be fitted into the inner surface material mounting portion 42 (fitted portion) of the inner surface material fixing member 4 with a small force.
In this embodiment, the connecting member 14a and the connector 15a are attached in a fixed state, but the connector 15a can also be attached so as to be swingable relative to the connecting member 14a, or the axis of the connecting member 14a to which the connector 15a is attached can be rotatably attached to the guide 11 (locking portion), thereby making the connector 15a swingable.
It is also preferable that the number of connector pieces 13 (pressing portions) and connectors 12 (pressing portions) correspond to the number of fitting portions 21c of the inner surface material 21 in the pipe circumferential direction. In this embodiment, two connector pieces 13 (pressing portions) and two connectors 12 (pressing portions) are provided in correspondence with the inner surface material 21 having two fitting portions 21c arranged side by side in the pipe circumferential direction. This allows the two fitting portions 21c to be pressed one by one in turn, so that the inner surface material can be fitted with less force even when the worker applies pressure manually.

It is preferable that the distance from connector piece 13 (pressure applying portion) to connector 12 (pressing portion) is greater than the distance from connector 12 (pressing portion) to guide 11 (locking portion), i.e., the length of connecting rod 15c is greater than the length of connecting rod 15b.
This makes it possible, for example, for an operator to enter the pipe P and easily perform the task of fitting the inner surface material 21 to the inner surface material fixing member 4 installed on the inner surface of the pipe P with less force.
Moreover, the length of the connecting rod 15c is preferably 1.8 times or more, and more preferably 2 times or more, relative to the length of the connecting rod 15b. By setting the lengths in this manner, the fitting operation can be performed more easily even when water is pooled in the pipe. Moreover, the length of the connecting rod 15c is preferably 7.1 times or less, and more preferably 4.2 times or less, relative to the length of the connecting rod 15b. By setting the lengths in this manner, the operation of the pressure unit by the operator can be made easier.
The length of the connecting rod 15c is not limited to this, and a connecting rod shorter than the length of the connecting rod 15b may be used.
As a result, when working with a pipe having a small diameter, the length of the inner surface material fitting device in the pipe diameter direction can be shortened, thereby improving workability.

Moreover, it is preferable that the length L1 of the guide 11 (the engagement portion) is equal to or greater than the length L2 of the inner surface material mounting portion 42 (the fitted portion) of the inner surface material fixing member 4.
As a result, even if the alignment of the guide 11 (engagement portion) with respect to the position of the inner material mounting portion 42 (fitted portion) of the inner material fixing member 4 is rough, a stable reaction force can be obtained from the inner material fixing member 4 via the inner material 21.

<Description of the method for fitting an inner surface material using the inner surface material fitting device>
Using this inner material fitting device 1, with the guide 11 (engaging portion) positioned near the engaging claw 21b (engaged portion) of the groove 21a of the inner material 21 that has already (immediately before) been fitted into the inner material mounting portion 42 (fitted portion) of the inner material fixing member 4, one of the two connector pieces 13 (pressure portion) (tip of the connecting rod 15c) is pressed against the inner surface side of the pipe P, so that the connector 12 (pressing portion) presses the vicinity of the fitting portion 21c of the unfitted inner material 21, thereby fitting the fitting portion 21c of the inner material 21 into the inner material mounting portion 42 (fitted portion) of the inner material fixing member 4.
Here, the inner surface material fixing member 4 is fixed to the ring-shaped support member 3 laid along the pipe circumference, and when the connector piece 13 (pressure section) (tip of the connecting rod 15c) of the inner surface material fitting device 1 is pressed against the inner surface of the pipe P, the inner surface material 21 and the inner surface material fixing member 4 at that location are deformed together with the ring-shaped support member 3 via the guide 11 (locking section) and displaced toward the pipe core. This deformation causes the connector 12 (pressing section) to relatively displace toward the inner surface of the pipe, and the inner surface material 21 can be pressed. However, the deformation of the ring-shaped support member 3 is limited by the rigidity of the ring-shaped support member 3, and a reaction force can be obtained by balancing the force applied to the ring-shaped support member 3 when pressure is applied and the stress of the ring-shaped support member 3.
Then, the other connector piece 13 (pressurizing portion) is similarly pressurized to fit the corresponding fitting portion 21c of the inner surface material 21, and thereafter, the same operation is repeated while moving the inner surface material fitting device 1 in the pipe axial direction, so that the fitting portions 21c of the inner surface material 21 are sequentially fitted into the inner surface material mounting portion 42 (fitted portion) of the inner surface material fixing member 4.
In this embodiment, the inner surface material fixing members 4 are arranged at intervals in the tube axial direction, but even if they extend continuously in the tube axial direction, the inner surface material fitting device 1 can be used to fit the inner surface material 21 by repeating the operation while moving the inner surface material fitting device 1 in the tube axial direction.

This inner surface material fitting device 1 does not require a driving part such as an extension mechanism as in conventional inner surface material fitting devices, and is a compact device, and by utilizing the principle of leverage, for example, the work of fitting the inner surface material 21 to the inner surface material fixing member 4 installed on the inner surface of the pipe P, when an operator enters the pipe P, can be easily performed with little force.

[Second embodiment]
8 to 10 show a second embodiment of the inner surface material fitting device of the present invention.
In this embodiment, instead of the connector 12 serving as the pressing portion in the first embodiment, a connector piece 16 is attached to the inner pipe surface side of a connecting rod 15b adjacent to a connector piece 13 as the pressing portion.
Other configurations and operations of this embodiment are similar to those of the inner surface material fitting device of the first embodiment.

[Third Example]
FIG. 11 shows a third embodiment of the inner surface fitting device of the present invention.
In the second embodiment, a connecting rod 15b having a length such that the distance between the guide 11 (engagement portion) and the connector piece 16 (pressing portion) is one pitch of the inner material fixing member 4 is used, whereas in this embodiment, a connecting rod 15b having a length such that the distance between the guide 11 (engagement portion) and the connector piece 16 (pressing portion) is two pitches of the inner material fixing member 4 is used.
This inner material fitting device 1 presses the connector piece 13 (pressure portion) (tip of connecting rod 15c) against the inner surface side of pipe P while guide 11 (engagement portion) is positioned near engaging claw 21b (engaged portion) of groove 21a of inner material 21 that has already (two positions ago) been fitted into inner material mounting portion 42 (fitted portion) of inner material fixing member 4, so that connector piece 16 (pressing portion) presses the vicinity of fitting portion 21c of unfitted inner material 21, thereby fitting fitting portion 21c of inner material 21 into inner material mounting portion 42 (fitted portion) of inner material fixing member 4.
Other configurations and operations of the present embodiment are similar to those of the inner surface material fitting devices of the first and second embodiments.

[Fourth embodiment]
12 to 14 show a fourth embodiment of the inner surface material fitting device of the present invention.
In this embodiment, instead of the second embodiment in which the guide 11 (engagement portion) is connected by a connecting member 14a made of a tubular member having a structure in which two axes are connected, the guide 11 is connected by a connecting member 14a made of a tubular member having a single axis structure.
Other configurations and operations of the present embodiment are similar to those of the inner surface material fitting devices of the first and second embodiments.

[Fifth Example]
FIG. 15 shows a fifth embodiment of the inner surface fitting device of the present invention.
In the fourth embodiment, a connecting rod 15b having a length such that the distance between the guide 11 (engagement portion) and the connector piece 16 (pressing portion) is one pitch of the inner surface material fixing member 4 is used, whereas in this embodiment, a connecting rod 15b having a length such that the distance between the guide 11 (engagement portion) and the connector piece 16 (pressing portion) is two pitches of the inner surface material fixing member 4 is used.
This inner material fitting device 1 presses the connector piece 13 (pressure portion) (tip of connecting rod 15c) against the inner surface side of pipe P while guide 11 (engagement portion) is positioned near engaging claw 21b (engaged portion) of groove 21a of inner material 21 that has already (two positions ago) been fitted into inner material mounting portion 42 (fitted portion) of inner material fixing member 4, so that connector piece 16 (pressing portion) presses the vicinity of fitting portion 21c of unfitted inner material 21, thereby fitting fitting portion 21c of inner material 21 into inner material mounting portion 42 (fitted portion) of inner material fixing member 4.
Other configurations and operations of this embodiment are similar to those of the inner surface material fitting devices of the first, second and fourth embodiments.

The above describes the inner surface material fitting device and the inner surface material fitting method of the present invention based on several embodiments, but the present invention is not limited to the configurations described in the above embodiments, and the configurations can be changed as appropriate within the scope of the spirit of the invention, such as by appropriately combining the configurations described in each embodiment.

The inner surface material fitting device and inner surface material fitting method of the present invention are compact devices that allow an operator to easily fit an inner surface material to an inner surface material fixing member installed on the inner surface of a pipe with little force even when the operator enters the pipe to perform the work. Therefore, the device can be suitably used for lining work of inner surface materials used when repairing existing pipes such as aging sewer pipes, and can also be used for lining work of inner surface materials used when finishing the inner surface of newly installed pipes, and can be particularly suitably used when the inner surface material is made of synthetic resin.

P pipe 1 inner surface material fitting device 11 guide (locking part)
11a Engagement claw 12 Connector (pressing portion)
13 Connector piece (pressure applying part)
14a Connection member 14b Bolt 15a Connector 15b Connection rod 15c Connection rod 16 Connector piece (pressing portion)
2 Inner surface material structure 21 Inner surface material 21a Groove 21b Engagement claw 21c Fitting portion 22 Fastener 3 Ring-shaped support member 4 Inner surface material fixing member 41 Fitting portion 42 Inner surface material mounting portion 5 Connecting spacer 6 Hardening material

Claims (4)

An inner surface material fixing member is fixed inside the pipe and has a fitting portion on the pipe center side.
An inner surface material having a fitting portion on the inner surface side of the pipe that fits into the fitting portion of the inner surface material fixing member and a locking portion on the pipe center side that extends in the pipe axial direction,
An inner surface member fitting device for fitting while moving in the pipe axial direction,
A locking portion that locks onto the locked portion of the inner surface material;
a pressing portion provided forward of the locking portion in the pipe axial direction and capable of pressing the inner surface material;
a pressure section provided on the front side and the pipe center side of the pressing section, and pressing the inner surface side of the pipe so that the pressing section presses the vicinity of the fitting section of the unfitted inner surface material ,
The locking portion, the pressing portion, and the pressure applying portion are connected to each other via a connecting rod .
An inner surface material fitting device comprising: The distance from the pressure portion to the pressing portion is greater than the distance from the pressing portion to the locking portion.
2. The inner surface material fitting device according to claim 1 . The length of the engaging portion is equal to or greater than the length of the fitted portion of the inner surface material fixing member.
3. The inner surface material fitting device according to claim 1 or 2. An inner surface material fixing member is fixed inside the pipe and has a fitting portion on the pipe center side.
An inner surface material having a fitting portion on the inner surface side of the pipe that fits into the fitting portion of the inner surface material fixing member and a locking portion on the pipe center side that extends in the pipe axial direction,
A method for fitting an inner surface material using an inner surface material fitting device for fitting an inner surface material while moving in a pipe axial direction, comprising the steps of:
The inner surface material fitting device is
A locking portion that locks onto the locked portion of the inner surface material;
a pressing portion provided forward of the locking portion in the pipe axial direction and capable of pressing the inner surface material;
A pressure applying portion is provided on the front side and the pipe center side of the pressing portion,
The locking portion, the pressing portion, and the pressure applying portion are connected to each other via a connecting rod,
In a state where the locking portion is positioned in the vicinity of a locked portion of an inner surface material already fitted to the inner surface material fixing member, the pressurizing portion is pressed against the inner surface side of the pipe, so that the pressing portion presses the vicinity of the fitted portion of the unfitted inner surface material.
13. A method for fitting an inner surface material using an inner surface material fitting device comprising:

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