JPH0343002Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a method for lining pipes buried underground, such as gas pipes, water pipes, power lines, communication lines, etc., for the purpose of repairing, reinforcing, etc. This invention relates to improvements to lining devices used for this purpose.

In recent years, for the purpose of repairing or reinforcing the above-mentioned conduit, a flexible cylindrical lining material has been attached to the inner surface of the conduit to line the conduit. As a method for lining the lining, adhesive is applied to the lining material in advance, and the lining is inserted into the pipe while inverting the inner and outer surfaces using fluid pressure, and the fluid pressure is applied to the inner surface of the pipe. There is a construction method in which the pipe line and the lining material are bonded together by crimping and lining the pipe line through the adhesive, and this method has been attracting particular attention in recent years.
This construction method has many advantages, such as being able to construct long pipes in a short time by exposing only the ends of the pipe, and being able to work even if the pipe has bends. This is an extremely excellent construction method.

However, in this construction method, it is necessary to apply an adhesive to the lining material in advance, and to wind the lining material around a reel that is rotatably supported within the pressure vessel. When applying adhesive to the lining material, the adhesive is sealed in the lining material, the lining material is moved at a constant speed, and a roller is used to apply the adhesive to the entire inner surface of the lining material. It is necessary to wind the lining material directly onto the reel. However, as the lining material is wound around the reel, the winding diameter of the lining material changes, and when the reel is rotated at a constant speed, the advancing speed of the lining material changes, causing the amount of adhesive applied to fluctuate. There is.

In addition, when inserting the lining material inside the pipe while turning it inside out, if the speed at which the lining material moves inside the pipe inside the turned part changes, a gap may be created between the lining material and the inner surface of the pipe, or the lining material may Wrinkles may occur, making it impossible to obtain a uniform lining. Therefore, the advancing speed of the turned-over portion of the lining material needs to be controlled to always be constant by controlling the rotational speed of the reel. Furthermore, if any trouble occurs during the process of inserting the lining material into the pipe and the lining material stops turning over, the rotation of the reel will immediately stop and the lining material may become loose or locally pushed. It is necessary to prevent such things from being included.

The present invention was developed in view of the above circumstances, and it can be used both when applying adhesive to the lining material and when inserting it into the pipe while turning the lining material inside out.
The rotational speed of the reel is controlled by measuring the circumferential speed of the outermost circumference of the lining material wound on the reel, so that the lining material is always turned over at a constant speed, and if the lining material is turned over for some reason. It is an object of the present invention to provide a novel conduit lining device that detects the progress of the lining material and stops the rotation of the reel when the reel stops.

Therefore, the present invention stores a cylindrical lining material whose inner surface is coated with adhesive in a pressure vessel, inserts the lining material into the pipe while turning it over using fluid pressure, and inserts the lining material inside out into the pipe. In a pipe lining device used in the lining method, which adheres to the inner surface of the pipe through an adhesive, a reel wound with the lining material is rotatably stored in the pressure vessel, and the reel is placed at the lower front of the pressure vessel. is provided with a lining material attachment part that fixes the end of the lining material in an annular shape, and above the reel is provided with a lining material attachment part that contacts the outer periphery of the lining material wound on the reel to measure the circumferential speed of the lining material. A speed measuring device is provided, a progress detecting device for measuring the progress of the lining material is provided inside the lining material attachment part, and the reel is driven by a motor with a continuously variable transmission controlled by the speed measuring device. When the lining material is driven and the advancing speed of the lining material detected by the progress detecting device becomes less than a predetermined speed,
The present invention is characterized in that the motor with the continuously variable transmission is stopped.

The drawings show one embodiment of the lining device of the present invention. 1 and 2, 1 is a truck, and a pressure vessel 2 is placed on the truck 1.
A reel 3 for winding a lining material is rotatably supported in the pressure vessel 2, as shown in FIG. The reel 3 has a width that is sufficiently larger than the folded width when the lining material is folded flat.

As shown in FIG. 3, a lining material attachment part 4 is formed at the front lower part of the pressure vessel 2 to which the end of the lining material is attached, and above the attachment part 4,
A horizontally elongated lining material introduction port 5 having a width approximately the same as the width of the reel 3 is formed. The lining material introduction port 5 is normally sealed with a lid 6, and when introducing the lining material, the lid 6 can be opened to open the lining material introduction port 5. Furthermore, when the lid 6 is removed from the lining material inlet 5, it can be easily lifted upward by a weight balancer 7.

The reel 3 is connected to a reducer 9 via a chain 8 outside the pressure vessel 2, and the reducer 9 is connected to a DC motor 12 via a continuously variable transmission motor 10 and a clutch 11. ,
The DC motor 12 is driven by the battery of the truck 1, and the continuously variable transmission motor 10 is driven by an external power source.

A snow phon 13 and a stirring fan 14 are attached to the upper part of the inner surface of the pressure vessel 2. The snow phon 13 is connected to a carbon dioxide gas cylinder 15 mounted on the truck 1, and the snow phon 13 is connected to a carbon dioxide gas cylinder 15 mounted on the truck 1 to supply dry ice powder into the pressure vessel. It's starting to spray. The snow phon 13 and the stirring fan 14
is adapted to be driven by the battery of the truck 1.

Reference numeral 16 denotes a squeezing device that is provided in front of the lining material inlet 5 and applies adhesive to the inner surface of the lining material. The squeezing device 16 includes two rollers 1
A lining material is sandwiched between 7 and 17, and the lining material is introduced into the pressure vessel 2 through the lining material introduction port 5 while applying an adhesive inside the lining material, and then wound around the reel 3. The squeezing device 16 feeds the lining material into the pressure vessel 2 while traversing from side to side, and winds it around the reel 3 while traversing.

18 is a speed measuring device provided at the upper part of the inner surface of the pressure vessel 2. The speed measuring device 18 has arms 19 on both sides, the rear part of the arm 19 is rotatably supported on the inner surface of the pressure vessel 2, and a rotary roller 20 is rotatably mounted on a shaft at the tip of the arm 19. supported. A tachometer is attached to the rotating roller 20, and a signal of the rotation speed measured by the tachometer is fed back to the motor 10 with a continuously variable transmission. The rotation speed of the engine is controlled.

21 is a lining material progress detection device. The progress detection device 21 is provided in the mounting section 4, and in this example, a rotating roller 22 is rotatably supported between both sides of the mounting section 4, and a rotating roller 22 is rotatably supported on both sides of the rotating roller 22. An arm 23 is rotatably provided, and a presser roller 24 is rotatably supported between the ends of the arm 23.
A metal plate 25 is attached to one arm 23,
A proximity switch 26 is provided at a position through which the metal plate 25 passes when the arm 23 rotates.
The pressing roller 24 of the progress detection device 21 is placed on the lining material A passing through the attachment part 4, and when the lining material A stops being turned over and loosens, the arm 23 rotates and the proximity switch 26 is metal plate 2
5 is detected to detect that the lining material has loosened.

To introduce the lining material into the pressure vessel 2, first remove the lid 6 from the lining material introduction port 5, lift it upward with the weight balancer 7, and open the lining material introduction port 5. Adhesive is sealed in the lining material in front of the squeezing device 16, one end of the lining material is introduced into the pressure vessel 2 through the lining material introduction port 5 through the squeezing device 16, and its tip is connected to the reel 3. do. In this state, the motor 10 with a continuously variable transmission is driven to rotate the reel 3 counterclockwise, and the lining material is wound around the reel 3.

At this time, the tip of the speed measuring device 18 rotates downward using the rear end of the arm 19 as a rotation axis, and the rotating roller 20 is placed on the outer peripheral surface of the lining material wound around the reel 3. As the reel 3 rotates, the rotating roller 20 rotates in contact with the outer periphery of the lining material. The motor 10 with the continuously variable transmission is controlled based on the rotation speed, and the rotation speed of the reel 3 is adjusted so that the rotating roller 20 always rotates at a constant speed. Therefore, the outermost circumference of the lining material wound around the reel 3 rotates at a constant speed, and the speed at which the lining material is taken up by the reel 3 is also constant.

In addition, while winding the lining material around the reel 3, the snow phon 13 is driven by electric power from the deterry of the truck 1, and liquefied carbon dioxide gas is sprayed from the snow phon 13 to form powdered dry ice, and the powdered dry ice is sprinkled on the lining material. At the same time, by winding the lining material around the reel 3, the lining material can be cooled with the powdered dry ice and early hardening of the adhesive can be prevented.

Next, if the location where adhesive is applied to the lining material and stored in the pressure vessel 2 is far from the lining construction site, the DC motor 12 is driven by the battery power of the truck 1. The reel 3 is transported to the construction site while being slowly rotated by the power thereof via the reducer 9. In addition, liquefied carbon dioxide gas is sprayed into the pressure vessel 2 from the snow phon 13 periodically or depending on the temperature change inside the pressure vessel 2, and the stirring fan 14 is driven to maintain the inside of the pressure vessel 2 at a low temperature. However, it is best to transport the lining material while keeping it cool.

When you arrive at the pipeline lining construction site, stop the rotation of the reel 3, pull out the end of the lining material A from the reel 3, and remove the rotating roller 2 of the progress detection device 21.
2 and presser roller 24, and its tip is attached to the attachment part 4. Pressure fluid (for example, compressed air) is introduced from the pressure fluid introduction port 27, and the lining material A
While being turned over by fluid pressure, the reel 3 is driven clockwise by the motor 10 with a continuously variable transmission to turn over the lining material A and insert it into the pipe to line it.

At this time, as described above, the circumferential speed of the outermost circumference of the lining material wound around the reel 3 is measured by the rotating roller 20 of the speed measuring device 18, and the motor 10 with a continuously variable transmission is controlled based on the circumferential speed. control and adjust the rotation speed of the reel 3. As a result, the circumferential speed of the outermost periphery of the lining material A wound around the reel 3 is always maintained at a constant speed, and the delivery speed of the lining material A remains constant.

In addition, if the lining material A stops turning over for some reason in the pipeline, reel 3
The portion of the lining material A fed out from the lining material A loosens, and its progress stops. This is detected by the progress detection device 21 and fed back to the continuously variable transmission motor 10 to stop the continuously variable transmission motor 10 and stop driving the reel 3.

According to the present invention, when applying adhesive to the inner surface of the lining material, the speed at which the lining material is drawn into the pressure vessel 2 is always constant, so the amount of adhesive applied to the inner surface of the lining material is uniform; This makes it possible to uniformly bond the lining material and the pipe line. In addition, even when the lining material A is turned over and inserted into the pipe, the lining material A is always fed out from the reel 3 at a constant speed, so the lining material A may be turned over out of control, or the speed may change and the lining material There are no voids or wrinkles between the material and the inner surface of the pipe. Furthermore, if the lining material stops turning over inside the pipeline for some reason, the rotation of the reel 3 is stopped via the progress detection device 21 to prevent the lining material from being pushed into the pipeline excessively. Therefore, after removing the cause of the stoppage of turning over, it is possible to continue turning over again.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the lining device of the present invention mounted on a truck;
The figure is a plan view thereof. FIG. 3 is a central vertical sectional view of the lining device of the present invention. A... Lining material, 2... Pressure vessel, 3... Reel, 4... Mounting part, 10... Motor with continuously variable transmission, 18... Speed measuring device, 21... Progress detecting device.

Claims (1)

[Scope of utility model registration request] A cylindrical lining material whose inner surface is coated with adhesive is stored in a pressure vessel, and the lining material is inserted into the pipeline while being turned over by fluid pressure, and the flipped lining material is inserted into the pipeline through the adhesive. In the pipe lining device used in the lining method, which adheres to the inner surface,
A reel wound with the lining material is rotatably housed in the pressure vessel, and a lower front surface of the pressure vessel includes:
A lining material attachment part is provided for fixing the end of the lining material in an annular shape, and a speed measurement unit is provided above the reel to measure the circumferential speed of the lining material by contacting the outer periphery of the lining material wound on the reel. A progress detection device is provided inside the lining material attachment portion to measure whether or not the lining material is progressing, and the reel is driven by a motor with a continuously variable transmission controlled by the speed measuring device. Further, the conduit lining device is characterized in that the motor with the continuously variable transmission is stopped when the advancing speed of the lining material detected by the progress detecting device becomes less than a predetermined speed.