JP2960620B2 - Cleaning tools inside the pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning tool for removing various deposits and rust generated inside a pipe.

[0002]

2. Description of the Related Art In some years or before, a cable such as a telephone line is expanded by passing a new cable through a steel pipe or a cast pipe buried 2 to 5 m below the ground. is there.

However, if a long period of time has elapsed since the steel pipe or the like was buried, rust may occur in the pipe due to aging, and it may be difficult to pass the cable due to deformation or detachment of the pipe. Especially recently, due to the demand for an increase in communication lines,
In many cases, a large-diameter metal cable is used. However, unless the above-described tube abnormality is removed, the laying of the cable is limited.

[0004] In this case, about 60% of the causes of the impediment of the cable are based on rust generated inside the pipe, particularly at the joint between the pipes. This rust rises inside the tube and narrows its inner diameter.

Under the circumstances described above, conventionally, when a new cable is to be laid in an existing pipe, the following penetration test is first performed to check for any abnormality in the pipe.
This involves previously connecting a wire to a mandrel slightly smaller in diameter than the inside diameter of the tube and inserting this mandrel from inside the manhole into a horizontal tube. Then, the mandrel was moved in the tube by pulling the wire, and the condition in the tube was inspected. If the mandrel penetrates the pipe without any hindrance, the pipe is maintained at a predetermined diameter, so that a new cable can be installed without any problem.

However, when the movement of the mandrel is hindered on the way, it is determined that the inner diameter of the pipe is narrow due to some abnormality such as rust. Conventionally, when there is a possibility that rust has occurred inside the pipe, the following method has been implemented to remove rust.

First, a method has been practiced in which a pipe is passed through a pipe, a high-pressure water flow (water jet) is jetted from the pipe, and rust is discharged by the water flow. Second
Then, connect a wire to a metal or fiber brush, insert it into the pipe through the manhole, and pull one of the wires to move the brush inside the pipe to remove rust generated on the inner surface of the pipe. Things.

[0008]

However, the first method using a high-pressure water flow requires installation of a large-sized facility for generating the water flow, resulting in a problem that the cost is extremely high. In addition, since large rust cannot be removed by water flow,
There was also a problem that rust remained in the pipe. Furthermore, in order to check whether the rust has been removed, it was necessary to insert a pipe camera into the pipe and project the inside of the pipe on a monitor. .

The implementation of the second brush method does not require large equipment and is inexpensive. Anyone can easily implement it. However, the rust generated in the pipe is not completely removed by the frictional force of the brush, and is usually insufficient to return the pipe to an inner diameter through which a cable can be inserted.

[0010] If a large amount of rust remains in the pipes even after cleaning, even if such a method is carried out, repair of pipes by excavation, change of a route for laying cables, design change to another pipe, etc. Treatment is required. Accordingly, the construction period is extended, and inconvenience of necessity of paying a vague cost arises.

Another problem with these conventional methods is that it is not easy to distinguish whether the inner diameter of the tube has been reduced due to the generation of rust or other causes. For this reason, in many cases, the cause cannot be confirmed unless expensive pipe cameras are used or troublesome excavation work is performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to provide a pipe cleaning tool which is easy to implement because no large-scale equipment is required and has an excellent rust removing effect.

[0013]

In order to achieve the above object, the present invention has the following arrangement. That is, a guide member that penetrates the cleaning member slidably is provided, a traction tool is connected to both ends of the guide member, and a stopper is protruded at a predetermined distance from the outer periphery of the guide member. It is movable along the guide body between the stoppers.

The guide body may be a round bar or a square bar having tabs at both ends, and preferably has a ridge formed on the peripheral surface. For example, a male screw is used as it is.
The tabs at both ends of the guide body need only be connected to a tow rope or wire, and are formed in a ring shape, for example. Alternatively, this may be in the form of a hook.

Further, the cleaning member is usually formed in a disk shape that matches the cross-sectional shape of the pipe, and a flange can be formed around the circumference so as to make the peripheral edge thin. The edge of the cleaning member is formed with, for example, a saw-toothed unevenness, so that the cleaning action can be enhanced. The cleaning member conforms to the internal shape of the tube. It may also be cylindrical for convenient use in tube penetration tests.

Further, the through hole is formed to be larger than the diameter of the guide member, and the disk-shaped cleaning member can be inclined with respect to the guide member. This makes it easy to move in the pipe.

The stopper is provided so as to protrude outward from the guide body, and its portion is made larger than the diameter of the through hole. The stopper may be formed integrally with the handle.

As another configuration, a traction pressing tool is connected to one end of the guide body, and at least two stoppers are protruded at a predetermined distance from the outer periphery of the guide body. It may be movable along the guide body between the stoppers.

A bendable rope-shaped glass fiber is connected to one end of the guide body as a traction press, and if the glass fiber is wound around a winding machine, the required length can be fed freely. Can be.

[0020]

In this cleaning tool, a wire or the like is connected to a pull and the inside of the pipe is moved by operating the wire.

When the cleaning member comes into contact with the rust protruding into the pipe, the cleaning member stops, but the guide body continues to move. Then, the stopper of the following guide body collides with the stopped cleaning member, and the impact of this collision acts on the entire cleaning member, and the rust in contact with the cleaning member is peeled off and removed.

At this time, if the rust is not peeled off by one collision and the cleaning member is in contact with the rust so as to cut into the rust, the guide body is pulled back in the opposite direction and then moved again in the first direction. Then, the stopper collide again.
By repeating this operation, a constant impact can be continuously applied to the rusted portion like a hammer.
Therefore, the cleaning member moves forward little by little while removing rust.

If the cleaning member has penetrated deeply into the rust and becomes difficult to move, the guide body is pulled back in the opposite direction,
Apply a strong impact from the opposite direction. After the cleaning member is once retracted in this way, the guide body is advanced in the traveling direction,
The handle portion is caused to collide with the cleaning member again.

[0024] By this continuous and repeated hammer action, it is possible to remove most rust generated in the pipe, including rust that could not be removed by the conventional method. When the through hole of the cleaning member is larger than the diameter of the guide, the cleaning member is inclined with respect to the guide. Therefore, even when the diameter of the cleaning member is slightly smaller than the diameter of the pipe, the cleaning member can move in the pipe without touching small rust, dust, and the like in the pipe.

If a large number of pipes through which cables can pass can be secured in this way, it is not necessary to newly install pipes, so that construction costs are greatly reduced. In addition, there is an advantage that design and construction using a large-diameter cable can be performed with ease.

The use of the cleaning tool of the present invention also serves as a pipe penetration test, so that the construction can be speeded up. When the pipe is bent or the joint is detached, it is impossible to insert the cleaning tool as described above even if the cleaning tool is operated as described above. You can check. In particular, when the movement of the cleaning tool suddenly stops at a certain position and can be pulled back in the opposite direction without any snagging from the stop position, there is no feeling that the cleaning member bites into the rust, Is likely to be
If the cause is rust, there is a feeling that the cleaning member has penetrated the rust, and the cleaning tool should gradually advance in the pipe by the repeated hammer action, and when the rust is removed, the cleaning tool should pass through the portion.

As described above, the cause can be easily determined by the movement of the cleaning tool when the movement is stopped, so that a treatment suitable for each cause can be quickly taken. Furthermore, if one end of the guide body is connected to a bendable rope-shaped glass fiber as a traction pressing tool, and the glass fiber is wound around a winding machine, one worker has a required length. , The cleaning tool can be inserted into the pipe while being sent out freely, and cleaned. This can be used even if the tube is slightly bent.

Since this cleaning tool can remove not only rust but also other dirt, it can be used for cleaning water pipes and sewer pipes.

[0029]

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

[0030]

[Embodiment 1] In FIG.
Reference numeral 0 denotes a rod-shaped guide body 11, pullers 12a and 12b provided at both ends of the guide body 11, and the guide body 11
Is inserted, and the guide body 11 is inserted between the tabs 12a and 12b.
Cleaning member slidable along the line. As shown in FIGS. 1 and 2, the rust removing plate 13 serving as a cleaning member has a disk portion 13a and an expanding portion whose diameter gradually increases radially outward of the disk portion 13a continuously with the disk portion 13a. It is composed of an open portion 13b and a flange portion 13c protruding radially outward of the disk portion 13a from the tip of the expanded portion 13b, and is formed in a dish shape as a whole.

At the center of the disk portion 13a, the guide 1
A through hole 13d through which the first hole 1 is inserted is formed. Since the diameter of the through hole 13 d is larger than the diameter of the guide body 11, the rust removing plate 13 is configured to be slidable along the guide body 11. The guide body 11 has a thread 11a for preventing excessive sliding of the rust removing board, and a peripheral edge of the through hole 13 is located at a valley between the threads 11a. . Therefore, a force exceeding a predetermined value is applied to the rust removing machine 1.
The rust removing plate 13 slides only when the rust removing plate 13 is applied.

The flange portion 1 on the outer periphery of the rust removing plate 13
The diameter of 3c is formed to be slightly smaller than the inner diameter of the pipe into which it is inserted, and the cleaning tool 10 can move inside the pipe.
At both ends of the guide body 11, a ring-shaped pull 12a,
12b are provided symmetrically. The cleaning tool 10 can be moved in a pipe by connecting wires to the pulls 12a and 12b, respectively, and pulling the wires. Stoppers 12c, 12d each having a plane perpendicular to the guide body 11 are formed at the joint between the pullers 12a, 12b and the guide body 11 as an integral part of the pullers 12a, 12b.

The rust removing board 13, the guide body 11, and the tabs 12a and 12b are made of a hard material such as iron, steel or stainless steel having a predetermined strength for the purpose of removing rust inside the pipe. You.

Next, a method of using the cleaning tool 10 having such a configuration will be described with reference to FIGS. FIG.
In the present invention, the in-pipe cleaning tool 10 of the present invention
The wire 30 is moved in the direction of the arrow A in the tube 30 by being pulled by a wire connected to the wire (not shown in FIG. 3).
When the center of gravity of the rust removing plate 13 is located closer to the flange portion 13b than the disk portion 13a, the cleaning tool 13 is inclined toward the flange portion 13c as shown in FIG. Therefore, a predetermined space is formed between the inner surface of the pipe 30 and the rust removing plate 13, so that the flange portion 13
c does not unnecessarily collect fine dust and the like in the pipe 30.

Then, when the cleaning tool 10 moves and the flange portion 13c comes into contact with the rust portion 30a protruding into the pipe 30, as shown in FIG. 4, only the rust removing plate 13 stops.
Then, the rust removing plate 13 swings around a contact portion between the screw thread 11a formed in the guide body 11 and the through hole 13d as a fulcrum, and becomes substantially upright. Since the guide body 11 continues to move with respect to the stopped rust removing plate, the stopper 12c of the pulling portion 12a that moves later collides with the disk portion 13a. At this time, the rust removing plate 13 and the handle 12a
Since both are made of metal such as iron, a sharp collision sound is generated by the collision. Since this collision sound is transmitted to the operator through the pipe 30, the operator knows that the cleaning tool 10 of the present invention has reached a rusted position.

In the event of a collision, the stopper 12c acts as a hammer on the rust removal board 13, and the impact of the collision removes the rust portion 30a projecting into the pipe 30 by the flange portion 13c. Rust part 30a in one collision
Is not removed, the wire is moved in the opposite direction to retract the pull portion 12a once, and then the stopper 12
The operation of causing c to collide with the disk portion 13a is repeated to remove rust.

If the collision sound is not generated by such an operation, the operator understands that the rust portion 30a has been removed. Then, when the rust portion 30a is removed, the cleaning tool 10 inside the pipe of the present invention moves inside the pipe 30 again with the rust removing plate 13 inclined as shown in FIG.

In this embodiment, one rust removing plate is provided. However, as shown in FIG.
One may be provided with a plurality of rust removing boards 50a, 50b. Further, in the above-described embodiment, the peripheral surface of the flange portion 13c of the rust removing plate 13 is formed to be smooth. However, in order to enhance the effect of removing rust, it may be formed in a saw-tooth shape, for example.

[0039]

Embodiment 2 Embodiment 2 will be described with reference to FIG. The cleaning tool 30 is provided at both ends of the guide body 31 and the guide body 31, and the guide bodies 31 are inserted through ring-shaped tabs 32a and 32b integrated with stoppers 33a and 33b.
A cylindrical member 34 that slides along the guide body 31 between the tabs 32a and 32b. This cylindrical member 3
Reference numeral 4 denotes a guide body 31 penetrating in the axial direction. The cylindrical member 34 has a cylindrical shape similar to a test mandrel, and is slidable with respect to the guide body 31 so as to be suitable for a penetration test.

In the penetration test, the internal condition of the pipe is investigated by moving a cylindrical member 34 having a certain length and slightly smaller than the diameter of the pipe in the pipe. If this penetrates without any hindrance, the cylindrical member 34 may be caught by rust or the like when a penetration test is performed, although it is determined that the pipe is in a normal state. To avoid this,
By the same operation as in the first embodiment, the tabs 32a and 32b collide with the cylindrical member 34 to give an impact. The impact can eliminate the rusting of the cylindrical member 34 and the rust without requiring a large force.

[0041]

Third Embodiment A third embodiment will be described with reference to FIG. The rust removing member 40 has a somewhat thick disk shape, and a guide body 41 is inserted through the center thereof. The rust removing member 4
A flange 42 is formed on the circumferential surface of the zero.

In this embodiment, unlike the first embodiment,
The rust removing member 40 is always upright without being inclined with respect to the guide body 41. Therefore, the flange 42 can be formed in a free shape so as to match the internal shape of the pipe. Other configurations are the same as those of the first embodiment, and the usage is the same.

[0043]

Embodiment 4 Embodiment 4 will be described with reference to FIG. The cleaning tool 50 includes a guide body 51, a stopper 52a provided at one end of the guide body 51, and a rust removing plate 53 through which the guide body 51 is inserted. The stopper 52
A is cylindrical, and a similar stopper 52b is provided at the other end of the guide 51, and a bendable rope 53 having a certain strength and being foldable is connected to the tip of the stopper 52b. The rope 53 is made of glass fiber, has appropriate strength, is wound around a winding machine 64, and is installed to send out a required length.

The stoppers 52a and 52b are cylindrical members,
Of course, other shapes such as a conical shape may be used. With this configuration, the cleaning tool 50 can be inserted into the pipe from only one direction without connecting and operating the cleaning tool with wires from both ends of the pipe.

Further, all operations can be performed by one person, and the trouble of connecting wires is unnecessary. Further, even if the pipe is bent, the glass fiber rope 53 bends according to this shape, so that it can be used for domestic water pipes and the like.

In addition, this cleaning tool 10 is not only rust,
It can also be used to remove scales and other dirt.

[0047]

As described above, according to the present invention, since the rust removing effect is particularly excellent, the inner diameter of the pipe can be quickly returned to the original state, and the cost of installing cables and the like can be greatly reduced. is there.

Further, since large-scale equipment is not required and the implementation is easy, the working time can be greatly reduced. Further, since the cause of the narrowing of the inner diameter of the tube can be easily found out, an appropriate measure can be taken immediately and there is an advantage that the working efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cleaning tool inside a pipe according to the present invention.

FIG. 2 shows a state in which a cleaning tool is inserted into a pipe from a manhole.

FIG. 3 is a perspective view showing a cleaning member.

FIG. 4 is a diagram showing a state in which the cleaning tool is moving in the pipe.

FIG. 5 is a diagram showing a state in which the cleaning tool is removing rust in the pipe.

FIG. 6 is a view showing another embodiment of the cleaning tool.

FIG. 7 is a perspective view of a cleaning tool according to a second embodiment.

FIG. 8 is a perspective view of a cleaning tool according to a third embodiment.

FIG. 9 is a front view of the cleaning tool according to the fourth embodiment.

FIG. 10 is a reference diagram showing a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Cleaning tool 11, 31, 41, 51 ... Guide body 13 ... Rust removal board 40 ... Rust removal member 12c, 12d, 33a, 33b, 52a, 52b ...
・ Stopper

Claims (12)

(57) [Claims] A guide member slidably penetrating the cleaning member, traction tools are connected to both ends of the guide member, and a stopper is protruded at a predetermined distance from an outer periphery of the guide member; The cleaning member inside the pipe, wherein the cleaning member is movable along the guide body between the stoppers. 2. The cleaning tool according to claim 1, wherein tabs are provided at both ends of the guide body. 3. The cleaning tool according to claim 1, wherein the handle has a ring-shaped portion, and the stopper is formed integrally. 4. The cleaning tool according to claim 1, wherein the guide body is a rod having a ridge formed on a peripheral surface. 5. The cleaning tool for cleaning the inside of a pipe according to claim 1, wherein the through hole is formed to be larger than the diameter of the guide body, and the cleaning member is inclined with respect to the guide body. 6. A guide member slidably penetrating the cleaning member, a traction pressing tool is connected to one end of the guide member, and at least two stoppers are provided at a predetermined distance on the outer periphery of the guide member. A cleaning member protruding from the pipe, wherein the cleaning member is movable along the guide body between the two stoppers. 7. The cleaning tool according to claim 6, wherein the guide body is a rod having a ridge formed on a peripheral surface. 8. The cleaning tool according to claim 6, wherein the tab has a ring-shaped portion, and the stopper is formed integrally. 9. The cleaning tool according to claim 6, wherein a peripheral portion of the cleaning member is formed in a saw-tooth shape. 10. The cleaning tool for cleaning the inside of a pipe according to claim 6, wherein the through hole is formed to be larger than the diameter of the guide body, and the cleaning member is inclined with respect to the guide body. 11. A bendable rope-shaped glass fiber is connected to one end of the guide body.
The cleaning tool for the inside of a pipe according to any one of items 1 to 10. 12. The cleaning tool according to claim 11, wherein the glass fiber is wound around a winding machine so as to feed a required length.