JP2002046181A - Lining construction equipment and lining construction method in sewer - Google Patents

Abstract

(57) Abstract: A long strip-shaped member D having joints at both side edges is continuously fed into a pipe, spirally wound, and fitting between adjacent joints is performed. Tubular body E
In a pipe-making machine B which advances while rotating by the feeding force of the strip-shaped member D with the formation of the tubular body E, the outer surface of the strip-shaped member spirally joined tubular body is simply added by simple means. The lining can be easily brought close to the inner surface of a sewer and can be lined with simple construction work. A pipe making machine (B) is provided with means for adjusting a braking force against rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a sewer system, a water system,
The present invention relates to an apparatus and a method for lining pipes such as gas pipes or agricultural water pipes, and is particularly useful for rehabilitation of these deteriorated pipes.

[0002]

2. Description of the Related Art In sewers, waterworks, gas pipes, agricultural water pipes and the like, it is known to line the inside of the sewers in order to rehabilitate the old sewers due to cracking or corrosion. As an apparatus and method for lining a sewer, the applicant of the present invention states, "In a sewer, a long strip-shaped member having joints at both side edges is continuously fed, spirally wound, and connected. And a method of lining the inside of a sewer with a strip-shaped spirally joined tubular body formed by joining joints to be joined by fitting.

FIGS. 5 to 8 show a lining construction apparatus in a pipe and a lining construction method using the apparatus, which is one of the proposed techniques (Japanese Patent Laid-Open No. 8-200547).
No.). FIG. 5A shows an example of a synthetic resin band-shaped member D ′ formed in a tubular body, and FIG. 5B shows a joined state of adjacent edges of the band-shaped member. In FIG. 5, reference numeral D 'denotes a belt-shaped member, and a T-shaped rib in the longitudinal direction is formed on the outer surface of the belt-shaped member at a constant interval in the width direction. A stop groove j 'is formed, and a male locking ridge j "is formed on the other edge side of the band-shaped member. As shown in FIG. The adjacent edges are joined by fitting the female locking groove j ′ and the male locking ridge j ″.

FIG. 6 shows a tube making machine, in which front and rear frames 1 are provided.
A guide roller 3 'is pivotally supported at a predetermined mutual interval between 1' and 12 ', and a joining mechanism comprising an outer roller 21', an inner roller 22 ', a gear box 24', a hydraulic motor 25 'and the like is connected to the frame 1'. It is a configuration attached to. In FIG.
23 'is a fixed pipe of the hydraulic motor 25' and the hydraulic hose 23.
1 ′. The joining process between the adjacent edges of the band-shaped member by this joining mechanism is
As shown in FIG. 7, the belt-shaped member D 'is spirally fed by the driving force of the hydraulic motor 25' between the outer roller 21 'and the inner roller 22', and the female locking groove and the male locking are formed. Band-shaped member spirally joined tubular body Da 'joined by fitting with a ridge
Then, the belt-shaped member D 'supplied to the first joining mechanism is fitted and joined.

FIG. 8 is an explanatory view showing a lining construction method using the above lining construction apparatus, wherein A 'is disposed on a sewer, M' is disposed on a departure side manhole, and H 'is disposed on a departure side manhole. A belt-shaped member supply drum, B 'indicates the above-mentioned tube making machine, M "indicates a reaching-side manhole, P indicates a hydraulic pump disposed on the reaching-side manhole, and P' indicates a hydraulic hose. 8, in the tube making machine B ′, the outer roller 21 ′ and the inner roller 22 ′ of the joining mechanism 2 ′ shown in FIG.
With these rollers, the belt-shaped member D 'is fed onto the guide roller 3' of the tube-forming machine B 'and spirally wound, and the belt-shaped member D supplied to the tube-forming machine B' from the drum H '. As described with reference to FIG. 7, one edge of the belt-shaped member Da ′ spirally wound and joined to the guide roller is joined to the other edge of the band-shaped member Da ′ by the above-described fitting joint structure. In this case, the feed speed of the band member of the joining mechanism unit by the hydraulic motor and the supply speed of the band member from the drum are balanced,
The strip-shaped member spirally joined tubular body is formed at a speed balanced with the feed speed.

In FIG. 8, the starting manhole side of the spirally joined tubular member E 'is substantially fixed in the duct A', and the feed speed of the belt member of the joining mechanism by the hydraulic motor is v, The feed direction is θ with respect to the circumferential direction of the tubular body.
Then, the pipe making machine B 'is moved forward at a speed regulated by v and θ, and the length of the spirally joined tubular body E' is increased at the same speed with the movement. Further, the driving force applied to the outer roller and the inner roller of the joining mechanism by the hydraulic motor is transmitted to the belt-shaped member, and the lined spiral member spirally-bonded tubular body is fixed with respect to this transmitting force, so that the pipe-forming member is formed. The machine rotates. In this case, assuming that the length of the band member for one pitch of the band-shaped member spirally joined tubular body is L, the pipe-making machine makes one rotation in L / v time with respect to the feed speed v of the band member. The rotation speed of the tube machine is v /
It is given in L (times / hour). Thus, in FIG.
The pipe-making machine B 'is rotated forward at the forward speed vcosθ and the rotation speed v / L. When the pipe-making machine reaches the reaching manhole, the lining work between the manholes is substantially finished.

[0007]

However, in the lining work by the lining work apparatus, the outer diameter of the spirally joined tubular body E 'which is lined behind the tube making machine along with the rotation and forward movement of the tube making machine. Is equal to the outer diameter of the band-shaped member spirally joined tubular body in the pipe making machine B ', and between the tubular body surface and the inner surface of the sewer, as shown in FIG. As shown in FIG. 8, the outer diameter of the spirally joined tubular body of the belt-shaped member in the pipe-making machine B ′ is smaller than the inner diameter of the sewer, so that it is located between the outer surface of the lining and the inner surface of the sewer as shown in FIG. The gap ΔG remains, and the inside diameter of the lining becomes considerably smaller than the inside diameter of the ideal lining when the gap is zero, so that a substantial reduction in the cross-sectional area of the flow passage of the rehabilitation pipe is inevitable.

In view of the above, the present inventors have divided the inside of a sewer between one meridian into a plurality of relatively short sections, and first formed a spirally joined tubular member in the form of a strip-shaped member over the entire length of the first section as described above.
At the front end of the first section, the pipe making machine is rotated in the opposite direction and moved backward to expand the diameter of the helically bonded tubular member in the first section by reverse twisting, and thereafter, the second section,.
… We tried to repeat the above operation sequentially to the last section, but the band-shaped member spirally joined tubular body part behind the pipe making machine was first expanded in diameter and was strongly pressed against the inner surface of the sewer, As a result, the reverse twisting force cannot be transmitted to the rear portion of the helically joined tubular body at the rear side, so that the so-called nodules on the inner surface of the lining are inevitably generated.

SUMMARY OF THE INVENTION It is an object of the present invention to continuously feed a long strip-shaped member having joints at both side edges in a pipe, spirally wind it, and fit the joints which are in contact with each other by fitting. Joining to form a tubular body, in the tube making machine to advance while rotating by the feeding force of the belt-like member along with the formation of the tubular body, simply by adding simple means, the spiral-jointed tubular body of the band-like member An object of the present invention is to make it possible to bring an outer surface close to an inner surface of a sewer, and to be able to perform lining by simple construction work.

[0010]

SUMMARY OF THE INVENTION A lining construction apparatus in a sewer according to the present invention continuously spirally feeds a long strip-shaped member having joints at both side edges in the sewer. Winding, forming a tubular body by joining and joining the joining portions that are in contact with each other to form a tubular body, and in a tube making machine that advances while rotating by the feeding force of the strip-shaped member as the tubular body is formed, A configuration in which a means for adjusting the braking force is provided, a support roller for the inner surface of the sewer is provided, and a means for adjusting the braking force against the rotation can be provided on a roller shaft of the support roller. In this case, a compression spring that adjusts the contact pressure between the roller and the roller support plate, or a driving unit that applies a reverse rotational force adjusted to the roller can be used as the means for adjusting the braking force against the rotation.

[0011] A method for lining the inside of a sewer according to the present invention is a method of lining the inside of a sewer by the above-mentioned lining construction device, and the means for adjusting a braking force against the rotation of the formed belt-like member by the above-mentioned means. The configuration is characterized in that the formed tubular body is expanded in diameter and brought closer to the inner surface of the sewer by applying a rotating force in a direction opposite to the rotating direction of the tube machine.

[0012]

[Action] In FIG.
When the reverse rotation reaction force m ′ is applied, the band-shaped member spirally joined tubular body E already formed in the pipe is fixed against rotation. A reverse rotational force acts between the pipe machine B and the pipe machine B. Also, due to the reverse rotational force, the shearing force generated at the spirally joined interface of the tapered tubular body portion e between the rotationally fixed lining strip-shaped member spirally joined tubular body E and the tube making machine B is reduced by the taper. When the radius at the large end e ′ of the tubular body portion e is minimum and the radius at the large end is r ′ and the winding angle is β, the minimum shearing force τ is m ′
cosβ ≒ r'τ, that is,

Τ m′cosβ / r ′ (1) If the reverse rotational reaction force m ′ is set so that the shearing force τ is larger than the frictional binding force f at the spiral joint interface of the belt-like member, the rotationally fixed lining band-like member spirally-joined tubular body can be formed. Significant slippage occurs at the spiral joint interface of the strip-shaped member in the tubular body portion between the pipe-forming machine and the strip-shaped spirally joined tubular body immediately after the tube-forming machine in a direction in which the slip is released. Thus, the strip-shaped spirally joined tubular body immediately after the pipe making machine is lining the inner surface of the sewer while expanding in diameter, so that the outer surface of the lining and the inner surface of the sewer are brought close to each other to prevent a gap from being generated therebetween. Is done.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a side view showing a state in the middle of lining construction using one embodiment of the lining construction apparatus according to the present invention, and FIG. 1B is a front view thereof. FIG. 2 is an enlarged view showing details of the joining mechanism in FIG. In FIG. 1, reference numeral 1 denotes a circular ring-shaped frame, which includes a front frame 11 and a rear frame 12. Reference numeral 2 denotes a joining mechanism, which is the same as the outer roller 21 provided with a groove a for receiving a T-shaped rib on the outer surface of the band-shaped member and a groove b for receiving a fitting joint of the band-shaped member, as shown in FIG. An inner roller 22 having a groove c for releasing an inner fold inside the joint is provided, and these rollers are connected to a hydraulic motor 25 via a gear box 23 (24 is a rotatable joint). In the embodiment shown in FIG. 1, two sets are provided on one frame piece out of three frame pieces having an angle of 120 °. Reference numeral 3 denotes a guide roller for the spirally joined tubular body having a belt-like member. A pair of rollers of an external guide roller 31 and an internal guide roller 32 is rotatably supported between the front and rear frames 11 and 12, and the embodiment shown in FIG. In the example, three pairs are provided on the downstream side (based on the feeding direction of the belt-shaped member) on the downstream side of each of the joining mechanisms 2 described above. Grooves a and b can be provided on at least a part of the external guide rollers 31 in the same manner as the external roller 21. Further, at least a part of the guide rollers 3,... May be constituted only by the external guide rollers 31 or the internal guide rollers 32. Reference numeral 4 denotes a support roller for supporting the pipe-making machine B in the sewer A. A roller shaft support plate 41 is mounted on the front frame 11 and the roller shaft support plate 41 is provided.
A support roller 40 is supported by a cantilever, and a compression spring 42 is mounted on a roller shaft end protruding from the roller shaft support plate 41, and the compression spring pressure is adjusted by adjusting the screwing of a screw spring 43. By adjusting the contact frictional force between the roller 40 and the roller shaft support plate 41, a predetermined braking force is applied to the rotation of the tube making machine B. The support rollers 4 are attached to the frame 1 at equal intervals in the circumferential direction (in the illustrated embodiment, two support rollers are provided for a frame angle of 120 °), and the roller shaft support plate 41 is rotated on the front frame 11. The front frame 11 and the roller shaft support plate 41
A cushion spring 44 is interposed between the inner wall and the inner wall to cope with a step on the inner surface of the pipe. The braking force adjusting means including the compression spring 42 and the screw type spring retainer 43 may be attached to at least one support roller.

To line a sewer using the lining construction apparatus according to the present invention, as shown in FIG.
In the sewer A, and the hydraulic pump p on the manhole on the arrival side
Mechanism 2 of the pipe making machine B via the hydraulic hose p '
The outer roller 21 and the inner roller 22 are driven, and the belt-shaped member D supplied from the drum on the starting side manhole is spirally fed by the outer roller 21 and the inner roller 22 of the bonding mechanism 2 and the first bonding mechanism is formed. The male locking of one edge of the belt-like member which is fed into the first joining mechanism into the female-type locking groove at the edge of the spirally-bonded tubular member formed by the outer roller and the inner roller. Fitting ridges
The pipe making machine B is rotated forward by the spiral feeding force of the belt-shaped member,
The belt-shaped member spirally joined tubular body E formed by the tube making machine B is lined on the inner surface of the sewer as the tube making machine B rotates forward.

In this case, the outer roller 21 of the joining mechanism 2
, And the feed angle (the angle formed by the circumferential line of the tubular body) is θ, and the radius of the spirally joined tubular body of the belt-shaped member in the pipe making machine is r, the hydraulic motor −
The driving torque m of the pipe making machine B by the

M = rwcosθ (2) Assuming that the rotational braking force based on the adjustment of the compression force of the compression spring 42 by the support roller 4 is m ′, the condition for rotating the tube making machine B is as follows.

M> m '(3) In FIG. 3, the strip-shaped spirally-joined tubular body E lined on the inner surface of the sewer A is fixed with respect to the driving torque m of the pipe-making machine B (the strip-lined spirally-joined strip-shaped member). If the tubular body becomes longer, it is fixed by friction with the sewer.In the initial stage when the belt-shaped spirally joined tubular body is short, the spirally joined tubular member may be fixed with a jig.) The above-mentioned rotational braking force m 'acts on the tapered tubular body portion e between the tapered tubular body portion E and the striped member spirally joined tubular body E, and the minimum shearing force generated at the joining interface of the tapered tubular body portion of the tapered tubular body portion e τ is, as described above,
It is generated at the large end e ′ of the tapered tubular body part e, and the radius at that point is r ′, and the winding angle is β,

Τ ≒ m′cosβ / r ′ (4) Therefore, assuming that the frictional binding force of the spiral joint interface of the belt-shaped member, that is, the minimum shearing force that can cause the joint interface to slide with each other is f, τ> f, that is,

If the rotational braking force m 'is set so that m'cosβ / r'> f (5) is satisfied, the band-shaped member spirally joined tubular body e immediately after the pipe-making machine becomes a spiral of the band-shaped member. The lining is performed while being deformed in the direction in which the mutual slip of the bonding interface is released, and the deformation of the band-shaped member helically bonded tubular body e that releases the slip is nothing less than the diameter expansion deformation.
From the rear end of the pipe-making machine B which is rotating and advancing, the band-shaped member spirally joined tubular body is lined in the pipe while expanding in diameter.

According to the method for lining a pipe in a sewer according to the present invention, the compression force of the compression spring 42 of the support roller 4 is set so as to reliably satisfy the above equation (5).
The helical-joined tubular body formed by a tube-making machine can be lined with the tube body close to the inner surface of the culvert. It can be lined with a spirally joined tubular member.

In the present invention, the means for applying the rotational braking force to the pipe making machine may be any as long as it can apply the rotational braking force m 'satisfying the equations (3) and (5), and is limited to the above-mentioned compression spring. Not done. For example, the roller 40 of the support roller 4
In addition, a drive unit for applying the adjusted reverse rotational force, for example, a hydraulic motor or an electric motor, may be connected to the roller shaft.

In the lining device according to the present invention, a long strip-shaped member having joints at both side edges is continuously fed and spirally wound in a duct, and a gap between joints which are in contact with each other is formed. A means for adjusting a braking force against rotation is attached to a known pipe making machine which is formed into a tubular body by joining by fitting, and is advanced while rotating by the feeding force of the strip-shaped member as the tubular body is formed. Things are also included.

Further, in the lining device according to the present invention, when the inner shell of the sewer A is square as shown in FIG.
It can also be a rectangular outer shell that can be rotated inside the sewer A. Further, as shown in FIG. 4, a guide roller 3 is disposed and supported outside the frame 1, and a pair of outer roller 21 and inner roller 22 constituting the joining mechanism 2 are disposed and supported similarly outside the frame 1. You can also.

The ribs of the band-shaped member D shown in FIG. 2 prevent the band-shaped member from being buckled when the band-shaped member is fed by the outer roller and the inner roller of the joining mechanism, and the external pressure strength of the band-shaped member spirally joined tubular body. Is not limited to the T-shape as long as it is a longitudinal rib. The lip d in FIG. 2 is useful for complementing the water tightness of the band-shaped member spiral joint j, but may be omitted. Of course, the fitting and joining structure is not limited to the one shown in the figure, and an appropriate male and female fitting structure can be used.

The lining construction apparatus and lining construction method according to the present invention can be used for lining in sewers such as sewers, waterworks, gas pipes or agricultural water pipes. It can also be used for box culvert lining.

[0022]

According to the lining construction apparatus and the lining construction method of the present invention, a tubular member is formed into a spirally joined tubular body with a tube-forming machine, and the tubular body is used to sufficiently bring the inside of a sewer into close proximity. It is possible to rehabilitate aging pipes while ensuring a sufficient flow path cross-sectional area. Further, in the lining construction device according to the present invention, a long belt-shaped member having a joining portion at both side edges is continuously fed and spirally wound, and the joined joining portions are joined by fitting. To form a tubular body, a conventional pipe making machine that advances while rotating by the feeding force of the strip-shaped member with the formation of the tubular body,
The structure can be simplified by simply providing a means for adjusting the braking force against rotation. Further, in the lining construction method according to the present invention, the operation is simple because the pipe-making machine only needs to be rotated and advanced into the culvert in a self-propelled manner.

[Brief description of the drawings]

FIG. 1 is a drawing showing one embodiment of a lining construction apparatus according to the present invention.

FIG. 2 is a view showing a joining mechanism of the lining construction apparatus shown in FIG. 1;

FIG. 3 is an explanatory diagram showing one embodiment of a method for lining a pipe in a pipe according to the present invention.

FIG. 4 is a drawing showing a main part of another embodiment of the lining construction apparatus according to the present invention.

FIG. 5 is a view showing a known band-shaped member used for a lining method in a sewer.

FIG. 6 is a view showing a conventional lining construction apparatus.

FIG. 7 is a view showing a process of forming a tubular body of a belt-like member by the lining construction apparatus of FIG. 6;

FIG. 8 is an explanatory view showing a conventional lining method in a sewer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Joining mechanism part 3 Guide roller 4 Support roller 42 Compression spring A Conduit B Pipe mill E Tubular body

Claims (5)

[Claims] 1. A tubular body in which a long strip-shaped member having joints at both side edges is continuously fed into a pipe, spirally wound, and joined joints are joined by fitting. In a pipe making machine that advances while rotating by the feeding force of the strip-shaped member with the formation of the tubular body, a means for adjusting the braking force against the rotation is provided. Lining construction equipment. 2. A support roller for an inner surface of a sewer is provided,
2. The apparatus according to claim 1, wherein a means for adjusting a braking force against the rotation is provided on a roller shaft of the support roller. 3. The apparatus according to claim 2, wherein the means for adjusting the braking force against rotation is a compression spring for adjusting a contact pressure between a roller and a roller support plate. 4. The apparatus according to claim 2, wherein the means for adjusting the braking force against the rotation is a drive unit for applying the adjusted reverse rotational force to the roller. 5. A method for lining an inside of a sewer by the lining construction apparatus for an inside sewer according to claim 1, wherein the pipe forming machine is adjusted by means for adjusting the braking force on a tubular body formed by the tube forming machine. A lining construction method in a sewer, characterized in that the formed tubular body is expanded in diameter and brought closer to the inner surface of the sewer by applying a rotating force in a direction opposite to the rotating direction of the pipe.