JP2001193894A - Pipe repairing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe repairing machine constituted so as to be capable of passing a bent part of a minor diameter manhole or the like. SOLUTION: This pipe repairing machine 1 comprises an expansible and contractible rubber sleeve 4 for closely enclosing front and rear inner plates 3a and 3b fixed to the front and rear ends of a lengthy connecting plate 2, a flexible rubber heater 5 provided along the rubber sleeve 4, and an air coupler 6 for introducing air into the rubber sleeve 4, and it is moved within a pipe by connecting a wire rope 8 to locking rings 7a and 7b connected to the front and rear inner plates 3a and 3b to pull it. The connecting plate 2 is divided in the middle, and the resulting split plates 2a and 2b on both sides are pivotally fixed to each other so as to be bendable, whereby the repairing machine 1 can be passed in a bent part of a minor diameter pipe 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-pipe repair machine for repairing a fault location such as a crack, breakage, or a pipe slippage at a connection portion of a buried pipe underground. The present invention relates to an in-pipe repair machine capable of entering a small-diameter pipe.

[0002]

2. Description of the Related Art Conventionally, pottery pipes, shrimp pipes and the like have been used as buried pipes for sewage and the like buried underground, but these pipes are aging, subsidence of the underground ground, or ground pressure. The fluctuations cause failures such as cracks, breakage, and separation of connection parts.

Conventionally, when repairing such a faulty part, measures such as pouring a solvent into a crack or a broken part to repair the part or partially replacing a buried pipe at the faulty part have been taken. .

However, since repairing by pouring in a solvent is a temporary measure, it is necessary to repeat the repairing procedure. Repairing for partially replacing a buried pipe in a failed part requires a large-scale construction. In order to solve such problems, in recent years, a method has been developed in which a buried pipe is buried in the ground to repair by attaching a repair material to a failed portion in the pipe.

[0005]

By the way, in the above-mentioned repair method, a repair material is surrounded on the outer periphery of a repair machine provided with a rubber sleeve which expands by sending air, and a front end and a rear end of the repair machine are provided. The repair machine is moved to the inside of the pipe by pulling the wire that is locked in the pipe, and the repair is performed.If there is a bent part in the small diameter manhole where the repair machine should enter, the repair machine There was a problem that can not pass.

The present invention has been made in order to solve the above-mentioned problem, and provides an in-pipe repair machine configured so that the repair machine can move to a failure location in the pipe through a bent portion such as a small-diameter manhole. The purpose is to do.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, an in-pipe repair machine of the present invention is provided with an expandable / contractible device which hermetically surrounds a space between front and rear inner plates fixed to front and rear ends of a long connecting plate. An elastic rubber sleeve, a flexible rubber heater provided along the rubber sleeve, and an air coupler for introducing air into the rubber sleeve, and a locking ring coupled to the front and rear inner plates. In an in-pipe repair machine that moves in a pipe by connecting and pulling a wire rope, a small diameter is achieved by pivotally connecting and bending both side divided plates formed by dividing the middle of the connecting plate. It is characterized by being able to pass through the bent part of the pipe.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, an in-pipe repair machine 1 according to the present invention has a stretchable structure which hermetically surrounds a space between front and rear inner plates 3a and 3b fixed to front and rear ends of a long connecting plate 2. It has a rubber sleeve 4, a flexible rubber heater 5 provided along the rubber sleeve 4, and an air coupler 6 for introducing air into the rubber sleeve 4, and is coupled to the front and rear inner plates 3a, 3b. Wire rope 8 (see FIG. 3) is attached to locking rings 7a and 7b.
In the in-pipe repair machine which moves inside the pipe by connecting and towing, the split plates 2a and 2b on both sides obtained by splitting the middle of the connecting plate 2 are pivotally connected to each other and can be bent. The small-diameter tube 10 can pass through a bent portion.

The construction of such an in-pipe repair machine 1 will be described below in detail. As shown in FIG.
The connecting plate 2 for connecting the head portions 9a and 9b provided at the front and rear ends is provided in the front and rear direction by a long plate member. The connecting plate 2 has a bent structure 11 that allows the connecting plate 2 to be bent at a position in the middle of the entire length thereof, preferably substantially at the center thereof. At the split position, the split plates 2a, 2b on both sides are connected to the connecting pin 11a.
It has a pivotal configuration.

That is, as shown in FIG.
Of the bent structure 11 are fitted to each other in an uneven manner and joined by the connecting pin 11a, and the split plates 2a, 2b on both sides are centered on the pin joining position.
Are rotatable in the plane direction, so that they are bent at the pin joint position.

The pivotal structure of the split plates 2a, 2b on both sides of the connecting plate 2 is provided by connecting the concavo-convex shapes of the ends with the connecting pins 1 as described above, and by using appropriate fittings. It may be configured.

As shown in FIG. 1, disc-shaped inner plates 3a and 3b are fixed to the front and rear ends of the connecting plate 2, and a rubber sleeve 4 is provided on the outer periphery of the inner plates 3a and 3b. Inner cases 24a and 24b that support the front and rear inner diameters are fixed. Further, the front and rear ends of the elastic rubber sleeve 4 are supported by the outer peripheries of the side plates 12a and 12b via side plates 12a and 12b having a shape along the outer periphery of the inner plates 3a and 3b. 4 is fastened by a band 13 which is folded back and forth around its inner periphery.

With such a configuration, the rubber sleeve 4 is configured so as to hermetically surround the space between the front and rear inner plates 3a and 3b and to fill the inside thereof with air.

A flexible rubber heater 5 is provided on the inner surface of the rubber sleeve 4 along the longitudinal direction, and each rubber heater 5 is supported at one end of a spring 15 so that the rubber sleeve 4 is attached in the circumferential direction. At the same time, the flexible rubber heater 5 is bent in accordance with the bending of the connecting plate 2 as described above.

The rubber heater 5 is electrically connected to a connector 16 fixed to the inner plates 3a and 3b, and supplies power by connecting a cable 16a (see FIG. 3) to the connector 16. The heater 5 generates heat and the rubber sleeve 4 is heated.

Further, the inner plates 3a and 3b are provided with an air coupler 6 for connecting an air pipe 17 (see FIG. 3) in addition to the connector 16 described above. The air coupler 6 communicates with the inside of the rubber sleeve 4 through a rotary shaft 28 having an inner hole as described later, and is connected to an air compressor (not shown) installed on the ground. The rubber sleeve 4 expands. At this time, the rubber heater 5 can be kept in contact with the rubber sleeve 4 as the rubber sleeve 4 expands due to the urging force of the spring 15.

The front head portion 9a receives a throttle-shaped portion 12c formed on the front side of the front side plate 12a with a bearing 18 and supports it with a support plate 19a. The front outer periphery of the support plate 19a is surrounded by a cover 20a. The support plate 19a is a pair of left and right wheels 22 inclined left and right via the joint side plate 21,
22 (see FIG. 5), and a locking ring 7a is connected to the front end of the joint side plate 21. With such a configuration, by connecting the wire rope 8 to the locking ring 7a and towing as shown in FIG. 3, the in-pipe repair machine 1 can be moved in the towing direction.

A motor case 26 in which a geared motor 25 is fixed in an inner case 24b is provided on a circular inner plate 3b fixed to a rear portion of the connecting plate 2, and a bearing 27 is provided on a rear inner plate 3b. A rotating shaft 28 having an inner hole is supported.
8 is connected to the output shaft of the motor 25 via a gear 29 and a pinion 30, and the rear end of the rotary shaft 28 is fixed to a support plate 19b of the rear head 9b.

The air coupler 6 and the plug 16 are provided on the support plate 12b. The air coupler 6 is communicated with the inside of the rubber sleeve 4 through the inner hole of the rotating shaft 28,
By connecting an air pipe 17 (see FIG. 3) to the air coupler 6 and guiding it to the ground from a pipeline, and supplying air from an air compressor installed on the ground, the rubber sleeve 4
Expands in the circumferential direction as shown by the rubber sleeve 4 ′ in FIGS. 5, 6 and 7.

A cover 20b is fixed to the outer periphery of the rear support plate 19b, and a pair of wheels 22 and 22 (see FIG. 6) inclined to the left and right via a joint side plate 21 are provided below the support plate 19b. It is provided and the locking ring 7b is connected. With such a configuration, the head portion 9b at the rear side with respect to the main body having the rubber sleeve 4 is rotated by the drive of the motor 25, and the wire rope 8 is connected to the locking ring 7b as shown in FIG. By pulling the wire rope 8, the in-pipe repair machine 1 can be moved in the pulling direction.

Further, as described above, the front and rear head portions 9a,
9b is configured to be rotatable with respect to the main body having the rubber sleeve 4, and furthermore, by rotating the main body of the rubber sleeve 4 by driving the motor 25 described above, the monitoring camera 35 substantially at the center of the rubber sleeve 4 is desired. In the circumferential direction.

The surveillance camera 35 has an extendable and protruding shape (see FIG. 7), and accommodates the surveillance camera 35 inside when the in-pipe repair machine 1 moves, as shown in FIG. The machine 1 is not obstructed when passing through the bent portion 10a of the small diameter pipe 10. That is, as shown in FIG. 1, a camera case 36 having a cylindrical upper portion is fixed substantially at the center of the connection plate 2 and at a position where the bending operation of the connection plate 2 is not hindered. A camera unit 37 is built in 36.

A window 38 is provided on the cylindrical upper part of the camera case 36, and the outer periphery of the camera case 36 is surrounded by an elastic bellows-like rubber sleeve 39 formed by cutting and connecting a part of the rubber sleeve 4 described above. The upper end is screw-fixed by the lid member 40 so as to maintain the hermetic seal.

The terminal of the wire 42 is connected to the screw 41 fixed below the lid member 40, and the wire 42 is connected to the large-diameter pulley 48b and the small-diameter pulley 49b provided at the lower part of the camera case 36, respectively. Hang the wire 42
Is guided forward of the in-pipe repair machine 1.

On the other hand, a const 45 is fixed to the inner plate 3a in front of the connecting plate 2. The const 45 has one end fixed to a hinge pin 46 and winds the belt-shaped steel plate 44 and urges a winding force in the winding direction. The other end of the belt-shaped steel plate 44 is fixed to the moving plate 47. Has been established.

A guide rail 46 is fixed in the longitudinal direction on the upper surface of the split plate 2a on the side of the const 45 (see FIG. 8), and a movable plate 47 is slidably provided on the guide rail 46. A large-diameter pulley 48a and a small-diameter pulley 49a provided form a pair with a large-diameter pulley 48b and a small-diameter pulley 49b provided below the camera case 36, and the pulley holding plate near the camera case 36 is attached to these pulleys. A wire 42 having one end fixed to 50 is connected to a screw 41 fixed below the lid member 40 of the camera case 36, and the other end is connected to the outside of the surveillance camera 35 as the bellows-like rubber sleeve 39 expands and contracts. It is designed to guide the protrusion to the inside and the inward storage.

When the rubber sleeve 4 expands due to the supply of air with such a configuration, the bellows-like rubber sleeve 39 on the outer periphery of the monitoring camera 35 extends, and the monitoring camera 35 projects against the urging force of the const 45. When the bellows-like rubber sleeve 39 is contracted by bleeding air, the surveillance camera 35 can be accommodated inward by the urging force of the const 45.

The in-pipe repair machine 1 of this embodiment is provided with the monitoring camera 35 as described above, and by rotating the rubber sleeve 4 forming the main body with respect to the front and rear head portions 9a and 9b. Although the monitoring direction of the monitor 35 is changed, the present invention may be configured such that the monitor camera 35 is not provided, and the front and rear head parts 9a and 9b do not rotate.

Further, although the in-pipe repair machine 1 of the present embodiment is formed in a circular cross section, it may be used as an in-pipe repair machine having an oval cross section.

A method of using the above-mentioned in-pipe repair machine 1 will be described. Before the in-pipe repair machine 1 is inserted into the small-diameter pipe 10, a repair material in which the outer periphery of the rubber sleeve 4 is impregnated with a thermosetting adhesive in advance. (Not shown) is wound with an extra length, and its outer periphery is tied with a loose fastening force by a rubber band or the like (not shown).

This repair material is made of a stretchable material having a glass cloth layer on the outer surface and a non-woven fabric laminated on the inner surface, and a thermosetting material containing a thermosetting agent in the FRP agent before construction. The adhesive is used by impregnating the entire repair material.

Next, as shown in FIG.
In a state where air is not supplied into the rubber sleeve 4 of
With the surveillance camera 35 reduced as described above, the small-diameter pipe 1
From the above-mentioned pipe entrance into the pipeline. At this time, the bent portion 10a formed by branching the small diameter pipe 10 or connecting it to another pipe.
In this case, the in-pipe repair machine 1 can be bent around the connecting pins 11a of the front and rear split plates 2a and 2b and pass through the bent portion 10a of the pipe according to the bending state of the pipe.

Then, the surveillance camera 35 checks the fault location in the pipe.
When it is confirmed by the CRT on the ground while monitoring in the above, the in-pipe repair machine 1 is stopped at a failure point in the pipeline. When air is supplied from the air compressor on the ground into the hollow of the rubber sleeve 4 in this state, the entire rubber sleeve 4 expands in the circumferential direction. Can be uniformly pressed while being pressed against each other.

Further, when the rubber sleeve 4 expands, power is sent to the rubber heater 5 to generate heat, so that the entire rubber sleeve 4 is heated, and when the adhesive impregnated in the repair material is thermally cured, the repair material becomes a pipe. It is fixed to the inner peripheral surface of the road.

After the repair material is fixed to the inner peripheral surface of the pipe in this way, the power transmission to the rubber heater 5 is stopped to stop the heat generation of the rubber heater 5, and then the air in the rubber sleeve 4 is extracted. As a result, when the rubber sleeve 4 is contracted, the surveillance camera 35 is stored inward again as described above, so that the entire in-pipe repair machine 1 is made substantially cylindrical and the bent structure 1
1 makes it possible to pass through the bent portion 10a of the small diameter pipe 10,
By pulling the wire rope 8, the in-pipe repair machine 1 can be pulled out of the pipeline.

[0037]

As described above, according to the in-pipe repair machine of the present invention, the in-pipe repair machine is configured to bend freely in the middle of the connecting plate. When the in-pipe repair machine passes through the bent portion of the pipeline, the repair machine can be bent and pass therethrough. Therefore, even if the pipeline has a bent portion that has not been able to enter conventionally, the repair machine can be used. Can be entered.

Further, since the rubber sleeve has elasticity and the rubber heater has flexibility, it is possible to bend the entire in-pipe repair machine, and it is possible to easily enter the pipe in accordance with the bending state of the pipeline. It is possible.

[Brief description of the drawings]

FIG. 1 is a sectional view of an in-pipe repair machine according to the present invention as viewed from a side.

FIG. 2 is a sectional view of the in-pipe repair machine according to the present invention as viewed from above.

FIG. 3 is a view showing a situation in which the in-pipe repair machine according to the present invention has entered a pipe having a bent portion.

FIG. 4 is a perspective view showing a pivoted state in a divided portion of the in-pipe repair machine according to the present invention.

FIG. 5 is a view of the in-pipe repair machine in FIG. 1 as viewed in the direction of arrows AA.

6 is a view of the in-pipe repair machine in FIG. 1 as viewed in the direction indicated by arrows BB.

FIG. 7 is a cross-sectional view of the in-pipe repair machine in FIG. 1 taken along line CC.

FIG. 8 is a cross-sectional view of the in-pipe repair machine in FIG. 1 taken along the line DD.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pipe repair machine, 2 ... Connecting plate, 2a, 2b ... Split plate, 3a, 3b ... Inner plate, 4 ... Elastic rubber sleeve, 5 ... Flexible rubber heater, 6 ... Air coupler, 7
a, 7b: locking ring, 8: wire, 11: bent structure, 11
a ... connecting pin, 12a, 12b ... side plate, 13 ... band,
15 spring, 16 connector, 20 cover, 2
DESCRIPTION OF SYMBOLS 1 ... Joint side plate, 22 ... Wheel, 25 ... Geared motor, 26
... Motor case, 28 ... Rotating shaft, 29 ... Gear, 3
0: Pinion, 35: Surveillance camera, 36: Camera case, 37: Camera unit, 38: Window, 39 ...
Bellows-like rubber sleeve, 40 ... lid member, 42 ... wire, 4
4 ... strip steel plate, 45 ... const, 46 ... hinge pin, 4
7: moving plate, 48a, 48b: large diameter pulley, 49
a, 49b: small diameter pulley, 50: pulley holding plate.

Claims (1)

[Claims] An elastic rubber sleeve hermetically surrounding a space between front and rear inner plates fixed to front and rear ends of a long connecting plate, a flexible rubber heater provided along the rubber sleeve, An in-pipe repair machine having an air coupler for introducing air into the rubber sleeve, and moving in the pipe by connecting and pulling a wire rope to a locking ring coupled to the front and rear inner plates. An in-pipe repair machine, characterized in that split plates on both sides formed by splitting the middle of the connecting plate are pivotally connected to each other and can be bent so as to be able to pass through a bent portion of a small diameter pipe.