JPH07151265A - Polishing of inside conduit utilizing water pressure motor and device therefor - Google Patents

Abstract

PURPOSE:To polish the inner periphery of a conduit surely in an exceedingly simple manner without damaging the inner wall of the conduit. CONSTITUTION:The high pressure water is introduced into a conduit 3 from a pit such as a manhole 2 by a hose 13, and the top end of the hose 13 is connected to the water pressure motor 6 of a polishing machine body 4, and a number of polishing tips 8 are installed on the top end surface of a rotary body 7 installed at the top end of the motor 6. The high pressure water is jetted rearward on the inner periphery of the conduit 3 from the rear part of the polishing machine body 4, and the high pressure water is jetted nearly in the tangential direction of the outer periphery of the rotary body 7 from the outer periphery of the rotary body 7. The polishing machine body 4 is advanced in the conduit 3, revolving the rotary body 7, and the high pressure water is jetted from the outer periphery of the rotary body 7 during the advance, and splashed on the inner peripheral wall of the conduit 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing method and an apparatus for polishing the inner circumference of a pipe line in advance when the wire is passed through the pipe line buried in the ground.

[0002]

2. Description of the Related Art When passing an electric wire or the like through a pipeline that has been conventionally buried in the ground, a step may occur at the seam of the pipeline due to ground subsidence, etc. There is a case where earth and sand, mortar, ground improvement agent (grout, etc.) enter the inside, adhere to the inner wall of the pipeline, and cannot pass electric wires.

Therefore, a method is adopted in which the deposits in these conduits are removed by polishing. As shown in FIG. 4, a rod or a piano wire (e) having a tip (d) at the tip is inserted from the manhole (b) having an opening on the ground surface (b) into the conduit (c). Then, while rotating the rod (e) and the tooth tip (d) by the rotating machine (f) installed in the manhole (b), the tooth tip (d) is propelled, and thereby the pipeline (c)
The inner diameter of the pipeline (c) was secured by scraping the steps inside and the mortar and grout in the pipeline (c).

[0004]

However, when the conduit (c) is long, the rod (e) also becomes long, and this buckles in the conduit (c), and the rod (e) is rotated in this state. The bent rod (e) may hit the inner wall of the conduit (c), which may damage the inner wall. Also, if the conduit (c) is bent, the rod or piano wire (e) cannot follow the curve of this conduit (c), and the inner wall of the conduit (c) will be damaged and the tip of the tip (d) will be damaged. May deviate from the center of the pipeline (c), and the inner wall may be scraped off excessively.

The present invention has been made in view of the above points, and provides a method and an apparatus capable of polishing the inner circumference of a conduit extremely easily and reliably without damaging the inner wall of the conduit. The above problem is to be solved.

[0006]

Therefore, the invention of claim 1 introduces high-pressure water from a vertical shaft such as a manhole into a pipe by a hose, and connects the tip of the hose to a hydraulic motor of the main body of the polishing machine. A large number of polishing tips are provided on the tip surface of the rotating body provided at the tip of the motor, and the high-pressure water is jetted from the rear part of the polishing machine body to the rear of the inner circumference of the pipe line and the outer circumference of the rotating body to High pressure water was sprayed in a substantially tangential direction on the outer circumference, and the inside of a pipe line polishing method was performed in which the polishing machine body was propelled in the pipe line while rotating the rotating body.

Further, the invention of claim 2 introduces high-pressure water from a vertical shaft such as a manhole into a pipe by a hose, connects the tip of the hose to a hydraulic motor, and the tip of a rotating body provided at the tip of the hydraulic motor. Provide a large number of polishing tips on the surface,
The high-pressure water is sprayed from the rear part of the polishing machine to the rear of the inner circumference of the pipe, and the high-pressure water is sprayed from the outer periphery of the rotating body in a substantially tangential direction of the outer periphery of the rotating body, while rotating the rotating body. In this method, the main body of the machine is propelled in the pipe, and high-pressure water is jetted from the outer circumference of the rotating body to be applied to the inner peripheral wall of the pipe during the propulsion.

According to a third aspect of the present invention, a hydraulic motor is provided in the main body of the polishing machine that can be inserted into the pipe line, and a large number of polishing chips are provided on the tip end surface of the rotating body provided at the tip of the hydraulic motor. One end of a high-pressure water hose is connected to the rear part of the hydraulic motor, and a first injection port for injecting the high-pressure water from the rear part of the polishing machine main body to the rear of the inner circumference of the pipe line is provided. The in-pipe polishing device is provided with the second injection port for injecting high-pressure water in a substantially tangential direction on the outer circumference of the body.

According to a fourth aspect of the invention, a hydraulic motor is provided in the main body of the polishing machine that can be inserted into the pipe line, and a large number of polishing chips are provided on the tip surface of the rotating body provided at the tip of the hydraulic motor. One end of a high-pressure water hose is connected to the rear part of the hydraulic motor, and a first injection port for injecting the high-pressure water from the rear part of the polishing machine main body to the rear of the inner circumference of the pipe line is provided. In a pipe line provided with a second injection port for injecting high-pressure water in a substantially tangential direction of the outer periphery of the body, and further provided with a third injection port for injecting high-pressure water from the outer periphery of the rotating body to apply the high-pressure water to the inner peripheral wall of the pipe line It was used as a polishing device.

[0010]

According to the invention of claim 1, the thrust of the main body of the polishing machine is obtained by injecting the high-pressure water from the rear part of the main body of the polishing machine to the rear of the inner circumference of the pipe. Further, the rotational force of the rotating body is obtained by injecting high-pressure water from the outer periphery of the rotating body in a substantially tangential direction of the outer periphery of the rotating body. The rotation of the rotating body by the polishing tip and the thrust of the main body of the polishing machine scrape off adhered substances and steps in the pipe line, and smooth the inner peripheral wall of the pipe line to run in the pipe line. Further, these injected water flows in the pipe and flows to the manhole side, where they are sucked and discharged to an appropriate place, or these waters are filtered and returned to high pressure water for circulation. Further, the scraps and the like that have been scraped off are carried to the manhole side by the flowing water to the manhole and removed.

The invention of claim 2 has the same action as the invention of claim 1, but high-pressure water is sprayed from the outer periphery while the rotating body is rotated at a high speed to be applied to the inner peripheral wall of the pipeline. Thus, the rotating body having the polishing tip is always positioned at the center of the pipe line. The high-pressure water may be jetted from one location of the rotating body or from a plurality of locations. Furthermore, this injection angle may not be at right angles to the inner peripheral wall of the conduit, but may be slightly shifted in the front-back direction of the rotating body.

According to the third aspect of the invention, the polishing machine main body having a high-pressure water hose connected to the rear portion is inserted into the pipe line, and high-pressure water is sent from the manhole side. High-pressure water is jetted from the second jet port on the outer circumference of the provided rotating body in a substantially tangential direction on the outer circumference of the rotating body, and the rotating body rotates. At the same time, the high-pressure water is jetted from the first jet port at the rear of the polisher main body, thereby obtaining thrust and propelling the polisher main body in the pipe line. Then, the polishing tip of the rotating body is used to scrape off the deposits and steps attached to the inner peripheral wall of the conduit to smooth the inner peripheral wall of the conduit. Further, the high-pressure water jetted from the main body of the polishing machine, the scraped polishing pieces, and the like are treated in the same manner as described in claim 1.

Further, in the invention of claim 4, the same operation as the invention of claim 3 is performed, but the high pressure water injected from the third injection port provided on the outer periphery of the rotating body of the polishing machine body is further piped. By contacting the inner peripheral wall of the passage, the rotary body having the polishing tip is always positioned at the center of the pipe, as in the case of the above-described operation of the second aspect.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. First, the polishing apparatus used in the method of the present invention will be described. In the manhole 2 having an opening on the ground surface 1,
A grinder main body 4 that can be inserted freely is provided in a pipe line 3 to which an opening at one end is connected. On the outer periphery of the polishing machine body 4,
A pedestal 5 slidable in the pipe 3 is provided, and a hydraulic motor 6 is supported on the pedestal 5. The hydraulic motor 6 has a cylindrical rotor 7 at the tip thereof, and a large number of polishing tips 8 are provided on the tip surface 7a and the protruding outer peripheral edge 7b of the rotor 7.

Further, a proper number of first injection ports 9 for spraying high pressure water are provided at the rear of the inner periphery of the pipe 3 at the rear part of the polishing machine main body 4, and the rotary body 7 is provided at a plurality of outer circumferences of the rotary body 7. The second injection ports 10 for spraying high-pressure water are provided in the substantially tangential direction of the outer circumference. Further, an appropriate number of third injection ports 11 for applying high-pressure water to the inner peripheral wall of the pipe 3 are provided on the outer circumference of the rotating body 7, and the rotating body 7
The fourth ejection port 12 is provided between the polishing tips 8 on the tip surface of the.

Next, in order to polish the inner peripheral wall in the conduit 3 by using the polishing machine body 4, a hose 13 for high pressure water is provided at the rear part.
The main body 4 of the polishing machine connected to is inserted into the conduit 3 from the manhole 2. Then, high-pressure water is sent from the ground to the hydraulic motor 6 of the polishing machine body 4 through the hose 13. As a result, high-pressure water is jetted from the plurality of second injection ports 10 on the outer periphery of the rotary body 7 of the water hydraulic motor 6 in a substantially tangential direction on the outer periphery of the rotary body 7, whereby the rotary body 7 is directed to the polishing machine body 4. Rotate.

Further, high-pressure water is jetted from the first injection port 9 to the rear inner periphery of the pipe line 3, whereby the polishing machine main body 4 is blown into the pipe line 3.
Promote. As a result, the polishing machine main body 4 is propelled while the rotating body 7 is rotating, and therefore the inner surface of the pipe 3 is rotated by the large number of polishing tips 8 provided on the tip surface 7a of the rotating body 7 and the protruding outer peripheral edge 7b. The adhered material on the peripheral wall is scraped off, and the stepped portion of the pipeline 3 is scraped off to promote the inside of the pipeline 3.

At this time, high-pressure water is jetted from the third jet port 11 provided on the outer periphery of the rotating body 7 to the inner peripheral wall of the pipe line 3 to hit it, and the third jet port 11 is rotating, The rotating body 7 is always located at the center of the pipe line 3, and the polishing tip 8 scrapes the inner circumference of the pipe line 3 at the center position of the pipe line 3.
In addition, by ejecting high-pressure water from the fourth jet port 12 during this polishing, it is possible to prevent heating of many polishing tips 8 due to polishing.

The high-pressure water ejected from the polishing machine body 4 flows into the pipe line 3. Further, since the adhered matter is attached to the inner peripheral wall of the pipe line 3 in front of the main body 4 of the polishing machine, the inner diameter of the pipe line 3 becomes small, so that the running water is likely to flow to the manhole 2 side. However, this running water is the polishing machine body 4
There are other manholes in front of the propulsion of the manhole, and these manholes 2 or other manholes are sucked up or pumped up to the ground. Therefore, the polishing pieces scraped off by the polishing machine body 4 ride on this running water and flow to the manhole 2 or another manhole. However, other manholes may be closed in advance to collect running water, polishing pieces, etc. in the manhole 2. Then, this water can be filtered and separated into water and polishing pieces, which are discarded, or only water can be used as high pressure water again.

The injection of the high pressure water from the first injection port 9, the second injection port 10, the third injection port 11 and the fourth injection port 12 (see FIG. 2) in the above embodiment is performed according to the respective purposes thereof. Balance the water pressure, water volume, etc. by setting them appropriately. The number of each of these injection ports 9, 10, 11, 12 is
It may be one or more. Further, the angle of the high-pressure water applied from the third injection port 11 to the inner peripheral wall of the conduit 3 is most preferably right angle with respect to the inner peripheral wall of the conduit 3, but as shown in FIG. 3, within a certain angle θ ° range. The above effect is obtained even if the high-pressure water hits the front and back a little.

[0021]

According to the first and third aspects of the present invention, a polishing tip is provided on the rotating body at the tip of the hydraulic motor provided in the main body of the polishing machine, and the high pressure water is fed into the main body of the polishing machine. In order to obtain the propulsive force of the polishing machine main body and the rotating force of the rotating body by the injection of, the high pressure water can be sent to the above polishing machine main body by inserting the hose into the pipeline, and the length of the pipeline to be polished is Even if the length becomes long, it is sufficient to extend the hose, and unlike the conventional method of rotating a rod or piano wire, there is no risk of damaging the inner circumference of the conduit. Moreover, even if the conduit is curved, the hose is flexible and can be extended without damaging the inner circumference of the conduit. Thus, by using this method or device, it is possible to easily secure the required inner diameter of the pipeline.

Further, since the high-pressure water discharged from the main body of the polishing machine flows to the vertical shaft side such as a manhole, the polishing pieces scraped off by the main body of the polishing machine are flown into the flowing water, and are carried. Easy to dispose. Moreover, the flowing water can be filtered and reused.

In addition to the above effects, since the high-pressure water is applied to the inner peripheral wall of the pipe from the outer periphery of the rotating rotor, the rotor is always placed at the center of the pipe. The polishing tip is positioned so as to scrape the inner circumference of the conduit at the center position of the conduit. Therefore, no matter how the pipeline is curved or there is a step, the rotary body of the hydraulic motor can always be guided to the central position of the pipeline, and the inner circumference of the pipeline can be evenly polished.

[Brief description of drawings]

FIG. 1 is a sectional side view showing a usage state of the present invention.

FIG. 2 is an enlarged side view showing a polishing machine body of the present invention.

FIG. 3 is a cross-sectional side view showing a main part in a use state of the present invention.

FIG. 4 is a sectional side view showing a conventional method.

[Explanation of symbols]

 1 Ground Surface 2 Manhole 3 Pipe Line 4 Polishing Machine Main Body 5 Stand 6 Hydraulic Motor 7 Rotating Body 8 Polishing Tip 9 1st Injection Port 10 2nd Injection Port 11 3rd Injection Port 12 4th Injection Port 13 Hose

Claims (4)

[Claims] 1. High-pressure water is introduced from a vertical shaft such as a manhole into the pipeline by a hose, the tip of the hose is connected to a hydraulic motor of the main body of the polishing machine, and the tip surface of a rotating body provided at the tip of the hydraulic motor is connected. Providing a large number of polishing tips, the high-pressure water is sprayed from the rear part of the polishing machine main body to the rear of the inner circumference of the pipe and high-pressure water is sprayed from the outer circumference of the rotating body in a substantially tangential direction of the outer circumference of the rotating body, A method of polishing a pipe using a hydraulic motor, characterized in that the polishing machine body is propelled in the pipe while rotating the rotating body. 2. High pressure water is introduced from a vertical shaft such as a manhole into the pipeline by a hose, the tip of this hose is connected to a hydraulic motor, and a large number of polishing is applied to the tip surface of a rotating body provided at the tip of this hydraulic motor. A tip is provided, and the high-pressure water is jetted from the rear part of the polishing machine to the rear of the inner circumference of the pipe, and the high-pressure water is jetted from the outer circumference of the rotating body in a substantially tangential direction of the outer circumference of the rotating body to rotate the rotating body. While using the above, the main body of the polishing machine is propelled in the pipeline, and high-pressure water is sprayed from the outer circumference of the rotating body to be applied to the inner peripheral wall of the pipeline while being propelled. Internal polishing method. 3. A hydraulic motor is provided in a main body of a polishing machine that can be inserted into a pipeline, and a large number of polishing tips are provided on a tip surface of a rotating body provided at a tip of the hydraulic motor, and a high pressure is provided at a rear portion of the hydraulic motor. One end of a water hose is connected and the high-pressure water is jetted from the rear part of the main body of the polishing machine to the rear of the inner circumference of the pipe line.
An in-pipe polishing apparatus using a hydraulic motor, characterized in that it is provided with an injection port and a second injection port for injecting high-pressure water from the outer circumference of the rotating body in a substantially tangential direction of the outer circumference of the rotating body. 4. A hydraulic motor is provided in a main body of a polishing machine which can be inserted into a pipe line, and a large number of polishing tips are provided on a tip end surface of a rotating body provided at a tip of the hydraulic motor, and a high pressure is provided at a rear portion of the hydraulic motor. One end of a water hose is connected and the high-pressure water is jetted from the rear part of the main body of the polishing machine to the rear of the inner circumference of the pipe line.
An injection port is provided, and a second injection port for injecting high-pressure water from the outer periphery of the rotating body in a substantially tangential direction of the outer periphery of the rotating body is provided.
Further, a third injection port for spraying high-pressure water to the inner peripheral wall of the pipe by making a tangential jet of the outer periphery of the rotary body to inject the high-pressure water into the pipe is used. apparatus.