JPH07116744B2 - Adhesive fitting device for pipe repair - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe fitting sticking and fitting device in which a repair member is applied to an inner wall surface to be repaired of a sewer pipe or the like by automatic or manual operation.

[0002]

2. Description of the Related Art Conventionally known means for repairing defective parts such as joints and cracks in pipelines such as sewage pipelines is to use a rubber expansion cylinder at a desired position in the pipeline to apply pressurized air. The so-called air packer method is mainly used in which the grout supplied separately from the expansion cylinder is poured out from the expansion cylinder and hardened on the wall surface.

[0003]

However, in the method of repairing the pipeline using the air packer as described above, various vehicles equipped with an air compressor, a solution injection device, etc. must be arranged on the ground, which requires large-scale equipment. It is necessary and cumbersome to handle. In recent years, a partial repair method (snap lock method) has also appeared, which is a simple type in which a tubular sleeve made of stainless steel or a rubber sleeve is directly carried into a defective portion of a pipe line and used as a fitting cover. Conventionally, in this type, a sleeve reduced in diameter is stretched and expanded at a repair position by a motor-driven fitting machine and attached to a wall surface. In this case, a link mechanism is adopted as a mechanism for enlarging the sleeve, but since this uses only a single parallel link structure, various fixing means such as stopper claws have to be incorporated, resulting in a complicated structure, which makes the manufacturing process difficult. Since it is troublesome and the number of pressing pieces is small (it was only provided with three large pressing pieces in the past), it is difficult to draw a uniform circle when enlarging, it easily causes a distorted cylinder, and friction with the sleeve. The coefficient is large and the spread is poor, leaving a problem for reliable wall repair.

In view of the above situation, the present invention has a large number of small tracheal wall enlarging pieces for pressing the repair member against the wall surface, and the link mechanism has a robust structure of a multiple link mechanism so that it can be manually operated. The purpose of the present invention is to provide a pipe fitting adhesive fitting device that solves the above problems by making it suitable for simple repair work.

[0005]

SUMMARY OF THE INVENTION According to the present invention, sliders are respectively screwed into left and right reverse threaded portions that can be engraved at the front and rear positions of a rotating shaft that is electrically and manually mounted on a bogie, and project from these sliders. A plurality of pipe wall expansion pieces having a multiple link mechanism formed by connecting parallel links to the arc-shaped split pressing plate are arranged in the radial direction of the slider, and are provided at the front and rear edges of the arc-shaped split pressing plate. The roller provided is orthogonal to the longitudinal direction.

[0006]

With the above-mentioned structure, the sticking and fitting device for moving the pipe line by the trolley is placed at a predetermined repair location by the operating rod which also serves as a pushing means for connecting the rotary shaft (main shaft) from one side of the pipe line. If this rotary shaft (main shaft) is rotated by the operating rod or electric motor, the sliders that are screwed into the left and right reverse screw parts provided on the rotary shaft will shift toward each other, and the sliders will be arranged in the radial direction. Since a plurality of pipe wall expansion pieces stand up by the double link mechanism, the pipe wall expansion piece group as a whole expands and moves to the pipe wall surface, and a sleeve or resin attached to the outer peripheral portion of the pipe wall expansion piece. The impregnated cloth is pressed against the repair wall surface, and it is easily attached and set.

[0007]

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

The drawing shows an embodiment in which a tube wall enlarging piece having an arc-shaped divided pressing plate is projected in six directions, and 1 is a trolley in which guide tires 2 are arranged in four directions at longitudinal longitudinal positions. Both ends of a rotary shaft 4 serving as a main shaft are rotatably supported between support plate portions 3 and 3 which are erected in the front and rear of the trolley 1. The rotary shaft 4 has reverse screw portions 5 and 5 serving as left and right screws in front and rear positions. 'Is engraved, and the sliders 6, 5 are respectively attached to the reverse screw parts 5, 5'.
The lower ends of the parallel links 8 and 8 are connected to the fulcrum holder portions 7 and 7 projecting in the radial direction (6 directions in the figure) of the sliders 6 and 6'by screwing 6 '. , 8 are connected to the front and rear of a support holder portion 10 projecting from the bottom of a single split pressing plate 9 having an arcuate cross-section corresponding to the pipe. In this case, the upper ends of the inner links 8a, 8a among the parallel links 8, 8 rising from both are connected to the same connection point 11 at the central position, and the fulcrum holder portions 7, 7 are connected.
And the parallel links 8, 8 and the split pressing plate 9 form a pipe wall expanding piece body 13 as a multiple link mechanism 12. In addition, sliding rollers 14 that are orthogonal to the longitudinal direction are provided at the front and rear edges of each of the divided pressing plates 9. Reference numeral 15 denotes an output shaft disposed at one end of the rotary shaft 4 with a reduction gear 16 interposed as appropriate, and transmits the drive of the output shaft 15 to a motor 17 mounted on the truck 1 or an operating rod 18 from the outside. These are connected to each other to form a pipe line repairing and pasting device 19 having the entire structure. Reference numeral 20 denotes a slide guide rod parallel to the rotation shaft 4 which is inserted into the rotation prevention groove 21 cut out at the side portions of the sliders 6 and 6 '.

To explain this action, when repairing a defective portion B such as a gap or a crack formed in a joint portion in the sewer pipe A, first of all, as in the case of a well-known pipe inspection, first carry-in from a manhole or the like. The TV camera (not shown) is inserted into the conduit A by self-propelled or the like and the defective portion is inspected.

Here, in the case where, for example, a well-known stretchable stainless steel sleeve 22 is used as the repair member for the conduit (see FIG. 11), this sleeve 22 has a winding structure so that it can be inserted into the conduit A. The side of the ratchet-shaped claw 22a arranged on one side is wound tight to form a small-diameter tubular shape. Further, in the duct fitting repair fitting device 19, the multiple link mechanism 12 of each pipe wall expansion piece 13 is contracted to reduce the divided pressing plate 9 group as a whole to have a small diameter.
The small-diameter sleeve 22 is inserted into the group and set (see FIG. 1).
0).

Next, the adhesive fitting device 19 equipped with the sleeve 22 is carried into the predetermined conduit A from the manhole C side, and the output shaft 15 connected to the rotary shaft 4 of the adhesive fitting device 19 is connected. An operation rod 18 that also serves as an insertion rod is added to the connection shaft portion 15a, and the operation rod 18 is added to the connection shaft portion 15a, and the operation rod 18 is pushed into a desired defective portion B and positioned.

Thereafter, if the rotary shaft 4 is rotated by rotating the operating rod 18 used for the insertion work (in the case of manual work),
A pair of sliders 6 and 6'threaded to the rotary shaft 4 move to the center side of the shaft to be screwed into the reverse threaded portions, and are projected on the sliders 6 and 6'in six directions (radial directions). The links of each compound link mechanism 12 are erected (see FIG. 2), and the expansion of the compound link mechanism 12 causes the sleeve 22 fitted and set on the split pressing plate 9 at the tip of each tube wall expansion piece 13 to be outside. Is pushed towards
The sleeve 22 is made to face over the defective portion B, and the entire outer circumference including the front and rear locking rubber step portions 22b is pressed against the wall surface of the conduit A, so that reliable water leakage prevention can be provided. in this case,
Lateral transition due to the expansion of the arcuate split pressing plate 9 in the sleeve 22 also smoothly shifts and extends due to the orthogonal bearing type rollers 14 at the front and rear ends of the split pressing plate 9. Therefore, the operation rod 18 is not given an excessive load.

Of course, in order to prevent the defective portion B, in addition to the use of the sleeve 22, for example, a cloth (not shown) having a predetermined shape in which a cloth is impregnated with a curable synthetic resin is attached to the inner wall portion to be attached. It is mounted at the corresponding position of the divided pressing plate 9, and the adhesive fitting device 19 is similarly inserted into the pipe line A, and the defective portion B
When the rotary shaft 4 is rotated to stand up and each double link mechanism 12 is raised and enlarged, the resin-impregnated cloth can be pressed against the wall surface, and a partial direct repair can be performed.

In the case of electric work, if a separately wired switch mechanism (not shown) is operated and the motor 17 transmitted to the rotary shaft 4 is driven, the rotary shaft 4 rotates, and each of them operates in the same manner as described above. The tube wall expansion piece 13 can expand and press the sleeve 22 against the wall surface.

[0015]

As described above, according to the adhesive fitting device for repairing a conduit of the present invention, a pair of sliders are screwed into the reverse threaded portions of the rotary shaft, and the parallel link projecting from each slider is divided into pressing plates. Since the pipe wall expanding pieces are connected to each other and a plurality of (6) pipe wall expanding pieces are arranged in the radial direction so as to expand with a small width, the stainless sleeve is not spread evenly. As a result, the wall surface of the pipe line is pressure-contacted without causing space, and the pipe line is reliably repaired. Moreover, the link mechanism of the pipe wall expansion piece is
A parallel link projecting from both sliders is connected to a single split pressing plate, and a double link mechanism is used as the same connecting point of the link on one side during the connection, so it does not cause blurring due to expansion and contraction movements. The link operation described above can be performed, and a simple structure is achieved without disposing reinforcements, stoppers, etc., unlike the conventional link mechanism. Moreover, since the front and rear edges of the split pressing plate that directly receives the sleeve and the like have orthogonal rollers, the displacement due to the enlargement of the sleeve becomes smooth. In addition, since the rotating shaft can also be rotated directly by the operating rod that also serves as the insertion rod, it does not require any power source and can be erected on-site, making it ideal for simple repair work. In addition, if a large number (for example, 6 places) of pipe wall expanding pieces that can be drawn out in the radial direction are finely arranged and the link length is adjusted, a wide range of pipes such as the sewer pipes 150φ to 600φ currently in use can be obtained. Corresponding to the road, the expansion of the cylinder is sure. In addition, since multiple tube wall expansion pieces will surely expand in a cylinder, even if a repair material is used in addition to the sleeve, and a cloth-impregnated adhesive material is used, the material can be reliably applied to the wall surface and partial repair is also possible. And the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a pipe fitting adhesive fitting device according to an embodiment of the present invention.

FIG. 2 is a perspective view in which the tube wall enlarging piece is enlarged to have a large diameter.

FIG. 3 is a side view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a front view of a slider

FIG. 7 is a side view of the same.

FIG. 8 is a front view of an arc-shaped divided pressing plate.

FIG. 9 is a side view of the same.

FIG. 10 is a perspective view in which the adhesive fitting device for repairing a pipeline is inserted into a stainless sleeve.

FIG. 11 is a perspective view of the stainless steel sleeve.

FIG. 12 is an explanatory diagram in which a pipe fitting adhesive fitting device is inserted into a sewer pipe.

[Explanation of symbols]

 1 dolly 4 rotating shaft 5,5 'reverse screw part 6,6' slider 8 parallel link 9 arcuate split pressing plate 12 multiple link mechanism 13 pipe wall expansion piece 14 roller

Claims (1)

[Claims] 1. A slider is respectively screwed into left and right reverse threaded portions formed at front and rear positions of a rotary shaft that is electrically and manually mounted on a bogie, and parallel links projected from each slider are arcuately divided and pressed. A plurality of tube wall expanding pieces having a double link mechanism formed by connecting to the plate are arranged in the radial direction of the slider, and rollers orthogonal to the longitudinal direction are provided at the front and rear edges of the arc-shaped divided pressing plate. A sticking and fitting device for repairing a pipeline characterized by being provided.