KR101686212B1

KR101686212B1 - Device for correcting pipe shape

Info

Publication number: KR101686212B1
Application number: KR1020150078737A
Authority: KR
Inventors: 김형규; 김영훈
Original assignee: 한국주철관공업주식회사
Priority date: 2015-06-03
Filing date: 2015-06-03
Publication date: 2016-12-13

Abstract

The present invention comprises: a frame unit installed to surround an outer surface of a pipe (P); and a pressing unit where a curved panel closely attached to an outer surface of the pipe is formed in an end part is assembled to a cylinder of a hydraulic jack and presses the outside of the pipe using hydraulic pressure to correct roundness, positioned inside the frame unit. The frame unit comprises: an upper coupling unit surrounding an upper side and both sides of the pipe; and a lower connection unit coupled to be separated from both lower ends of the upper coupling unit.

Description

[0001] The present invention relates to a device for correcting pipe shape,

The present invention relates to a pipe circular shape correcting device, and more particularly, to a piping circular shape correcting device which can correct a shape so that a pipe deformed into an elliptical shape by an external load such as earth pressure, truck load, This is a technique related to a shape correcting apparatus.

In general, pipes of various diameters are used according to the purpose of water pipes to be buried in the ground and to transport water. Especially, ductile iron casting pipes or steel pipes excellent in mechanical properties, corrosion resistance and durability .

When the pipe is buried underground in the state of being buried in the underground of the big diameter water supply and sewage pipe and the pipe is divided into elliptical shape due to external load such as earth pressure or vehicle load, There is a problem that the insertion port is not inserted into the socket formed on one side or the cross sectional shape of the pipe on both sides is changed so that the work such as welding / fusion can not be performed.

Such a large-sized pipe is deformed by the loss and load of the gravel, and a pipe straightening device for restoring it is used.

A conventional 'round correction device' for restoring a deformed part of a large pipe to an original curvature is shown in FIG. 1 and comprises the following contents.

The conventional round calibration apparatus comprises a lower support having a lower surface formed by a circular arc surface having the same curvature as the inner peripheral surface of the large pipe; A hydraulic jack vertically installed on an upper portion of the lower support; An upper jig block mounted on a distal end of a piston of the hydraulic jack and having an upper surface formed of a circular arc surface having the same curvature as an inner circumferential surface of the large steel pipe to push the crushed portion of the large steel pipe from the inside by the hydraulic jack; And a plurality of ball casters mounted on the lower support and elastically biased downward to elastically contact the inner circumferential surface of the large steel pipe. Accordingly, the present invention can easily restore undamaged portions of the large steel pipe even if it is inserted only once into the large steel pipe regardless of the position or position of the crushed portion.

However, there is a pipe internal calibrator (elliptical calibrator) generally used for calibrating an elliptical pipe, but this is a device for correcting the shape of a pipe by externally applying a force from the inside of the pipe. It has a disadvantage that it is difficult to use during maintenance. That is, since the elliptical calibrator can not be recovered after the pipe is joined in the pipe after calibration in the pipe, there is a disadvantage that a separate manhole must be installed or a person must enter the pipe and recover it.

In addition, the conventional calibrating device is particularly inserted into the inner surface of the pipe and pressurized and stretched by using a hydraulic jack. However, pressing inside the pipe presses only one side of the crushed portion, so that it is easy to calibrate the portion. .

KR 10-1095929 B1

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a pipe, a pipe, a pipe, And it is an object of the present invention to provide a piped circular shape calibrating device capable of easily calibrating a pipe even in a deformed state and easily disassembling / recovering it after use.

Another object of the present invention is to provide a pipe end fitting device capable of compressing a large pipe externally and correcting the shape of the pipe while keeping the shape of the endmost pipe at the time of pipe joining.

In order to achieve the above object, according to an embodiment of the present invention, And a pressing portion which is located inside the frame and has a curved surface panel attached to an end portion of the pipe so as to be in close contact with the outer surface of the pipe and which is assembled to the cylinder of the hydraulic jack and presses the outer side of the pipe by hydraulic pressure to correct the roundness, And a lower connecting part detachably coupled to both ends of the lower coupling part, wherein the upper coupling part includes a lower coupling part for coupling the upper beam and the lower beam to both sides of the upper beam, Beam and a right beam, and the frame portion is further provided with a stopper which moves and is fixed in the longitudinal direction along the inner surface of the upper beam or the lower connection portion to restrain the movement of the pipe.

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In order to achieve the above-mentioned object, according to another embodiment of the present invention, a frame unit installed in a form to surround an outer surface of a pipe (P); And a pressing portion which is located inside the frame and has a curved surface panel attached to an end portion of the pipe so as to be in close contact with the outer surface of the pipe and which is assembled to the cylinder of the hydraulic jack and presses the outer side of the pipe by hydraulic pressure to correct the roundness, And a lower connection part detachably coupled to both ends of the upper coupling part, wherein the upper coupling part is connected to both the upper beam installed with the pressing part and the upper coupling part connected to both sides of the upper beam, And a pair of chains connected to the lower end of the chain at the end of the chain to wrap the pipe.

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In order to achieve the above object, according to another embodiment of the present invention, there is provided a plasma display panel comprising: a frame part installed to surround an outer surface of a pipe; And a pressing portion which is located inside the frame and has a curved surface panel attached to an end portion of the pipe so as to be in close contact with the outer surface of the pipe and which is assembled to the cylinder of the hydraulic jack and presses the outer side of the pipe by hydraulic pressure to correct the roundness, And a lower connection part detachably coupled to both ends of the upper coupling part, wherein the upper coupling part is connected to both the upper beam installed with the pressing part and the upper coupling part connected to both sides of the upper beam, And the wire end portion is connected to the lower connection portion so as to surround the pipe.

According to the present invention having the above-described configuration, the following effects can be expected.

The present invention can assemble a detachable frame for elliptical calibration by simply joining panels or bars with bolts or connecting wires by tightly fitting an upper coupling part to a pipe buried in the underground, and further, by using a portable hydraulic jack, And an external elliptical calibrator assembled with bolts or wires can be easily disassembled after one pipe is calibrated and the maintenance work can be easily performed.

Also, as the frame is formed in a rectangular frame shape, and the pipe is inserted into the frame portion and pressed from the one side to the hydraulic jack, the pipe is supported in three directions of the frame portion to increase the roundness of the pipe.

1 is a cross-sectional view of a conventional round calibration apparatus.
FIG. 2 is a front view of a pipe end fitting apparatus according to an embodiment of the present invention. FIG.
3 is a front view of a pipe endocamer according to another embodiment of the present invention.
4 is a roller detail view of Fig.
5 is a detailed view of the stopper of Fig.
6 is a front view of a piping contour correcting apparatus according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a perspective view of a pipeline circular shape correcting apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the pipe end fitting device of the present invention comprises a frame part 100 and a pressing part 200. The pipe part 300 is further provided with a supporting part 300 as required, The main technique is to pressurize and to calibrate it in a circular shape.

The frame part 100 is a structure that surrounds the outer surface of the pipe P. The frame part 100 may have a configuration of the pressing part 200 and the receiving part 300.

The frame part 100 includes an upper joint part and a lower joint part 140 so as to cover the outer surface of the pipe.

Here, the upper joining portion is formed in the shape of '┌┐' enclosing the upper side and both sides of the pipe. The upper coupling unit includes an upper beam 120 and left and right beams 160 and 180 detachably coupled to lower ends of the upper beam 120 by bolting or the like. The lower connection part 140 is detachably coupled to both ends of the lower part of the upper coupling part by a bolt, a hook or the like, and can be closely attached to the lower side of the pipe. The lower connection portion 140 may be detachably connected to the lower ends of the upper coupling portion by bolts using a bar or a barrel threaded on both sides thereof. It is possible.

Therefore, since the upper coupling portion is seated on the pipe P and the lower coupling portion 140 is fastened to the upper coupling portion from the lower portion of the pipe P, there is an advantage in that it is easy to install and disassemble.

The pressing portion 200 is an actuator installed on the frame portion and capable of correcting the shape by pressing the deformed pipe.

The pressing part 200 is located inside the frame part and a curved panel 222 closely attached to the outer surface of the pipe is assembled to the cylinder of the hydraulic jack 220 to correct the roundness of the pipe by hydraulic pressure .

A hydraulic unit 240 is provided to supply the hydraulic pressure to the hydraulic jack 220. The hydraulic unit 240 generates hydraulic pressure by operating the lever to operate the hydraulic jack 220.

The support part 300 is installed inside the frame part to fix the hydraulic jack. In the embodiment of the present invention, the support part 300 is installed on the lower side of the hydraulic jack so that it can be stably fixed.

The receiving part 300 is characterized in that the receiving part is installed in one of the left and right beams 160 and 180 in the horizontal direction. Here, the receiving part 300 is bolted to the left and right beams 160 and 180, and the pressing part 200 is mounted on the receiving part 300.

The method of use will be described in accordance with the embodiment of the present invention.

First, the upper joint is seated on the upper part of the pipe to be corrected of the pipe buried in the underground. Then, the lower connection portion is coupled to the upper coupling portion so that the pipe is positioned inside the frame portion 100. The length of the upper beam 120 and the lower connection part 140 is relatively longer than the diameter of the pipe of the frame part 100 and the length of the left and right beams 160 and 180 corresponds to the diameter of the pipe If the road is good.

This is because the pressing portion 200 is installed inside one of the left and right beams 160 and 180 so that the pipe can be pressed from the outside. The upper beam 120 and the lower connection part 140 are formed to have a length corresponding to the diameter of the pipe, and are tightly adhered to each other when the pipe shape is corrected.

FIG. 3 is a perspective view of a pipe end fitting apparatus according to another embodiment of the present invention, FIG. 4 is a detailed view of the roller of FIG. 3, and FIG. 5 is a detailed view of the stopper of FIG.

Referring to Fig. 3, description will be made with reference to Fig. 4 and Fig. 5. Fig.

Referring to FIG. 3, the structure of the frame unit 100, the pressing unit 200, and the receiving unit 300 described above in the embodiment of the present invention is described. In addition, the roller 400 and the stopper 500 ) Can be added.

The roller 400 is installed inside the frame part 100 to adjust the position of the pipe pressing part by reducing the rotational friction in the radial direction of the pipe.

This is because the pipe buried in the underground is large and heavy, and when the portion to be pressurized by the pipe does not coincide with the pressurizing portion, it is necessary to rotate the pipe at a certain angle to catch the position.

In FIG. 4, the rollers 400 are installed as a pair in the lower connection part 140 of the frame part to facilitate rotation.

The stopper 500 is fixed to the frame part 100 in the longitudinal direction along the inner surface of the upper beam 120 and the lower connection part 140 to stop the movement of the pipe 500 ) Can be further provided.

After the position of the pipe P to be pressed is determined, it is preferable to fix the pipe P with the stopper 500 to prevent rolling motion of the pipe.

Here, the stopper 500 may be installed in the upper beam 120 and the lower connection part 140, but any type of slide device that can slide along the longitudinal direction is possible.

5, a stopper 500 is formed on both sides of the upper beam 120 so as to slide along the upper beam 120. The stopper 500 is coupled to the upper beam 120 by bolts, .

6 is a front view of a piping contour correcting apparatus according to another embodiment of the present invention.

6, the frame part 100 is connected to a chain 110 connected to both sides of the upper beam 120 and the lower connection part 140 so that the pipe P is positioned inward, (P) can be pressed and corrected to a full circle shape.

Here, the hydraulic jack 230 may be installed in the upper beam 120 to easily calibrate an elliptic pipe circularly from the outside of the pipe.

A plurality of connection holes 112 are formed in the upper beam 120 and the lower connection part 140 at regular intervals along the longitudinal direction so that both ends of the chain are coupled to each other to adjust the spacing. Because the pipe can be calibrated by adjusting the spacing to match the diameter of the various pipes.

On the other hand, if a wire is used in place of the chain 110, an effect similar to that of a chain can be obtained.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims. Of course, many other variations are possible.

100: frame part 120: upper beam
140: lower connection part 160: left beam
180: Right beam 200:
220: Hydraulic jack 240: Hydraulic unit
300: receiving portion 400: roller
500: Stopper

Claims

A frame part installed to surround the outer surface of the pipe;
A curved panel 222 which is located at the inner side of the frame and is in close contact with the outer surface of the pipe at an end thereof is assembled to the cylinder of the hydraulic jack 220 and presses the outer side of the pipe by hydraulic pressure to correct the circularity, ; &Lt; / RTI >
The frame part 100 includes an upper coupling part for wrapping the upper side and both sides of the pipe and a lower coupling part 140 detachably coupled to both ends of the lower coupling part,
The upper coupling unit is composed of an upper beam 120 and a left beam 160 and a right beam 180 coupled downward to both sides of the upper beam,
The frame unit 100 may further include a stopper 500 that moves and is fixed in the longitudinal direction along the inner surface of the upper beam 120 or the lower connection unit 140 to restrict movement of the pipe. Pipe contour calibration device.

The method according to claim 1,
In the frame portion,
Further comprising a support portion (300) installed on the inner side to fix the hydraulic jack.

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The method according to claim 1,
In the pressing portion 200,
And a hydraulic unit (240) for supplying hydraulic pressure to the hydraulic jack.

The method according to claim 1,
In the frame portion 100,
Wherein a roller (400) is installed on the inner side to rotate the pipe so as to adjust the position of the pipe pressurized portion.

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A frame part installed to surround the outer surface of the pipe;
A curved panel 222 which is located at the inner side of the frame and is in close contact with the outer surface of the pipe at an end thereof is assembled to the cylinder of the hydraulic jack 220 and presses the outer side of the pipe by hydraulic pressure to correct the circularity, ; &Lt; / RTI >
The frame part 100 includes an upper coupling part for wrapping the upper side and both sides of the pipe and a lower coupling part 140 detachably coupled to both ends of the lower coupling part,
The upper coupling part is composed of an upper beam 120 to which the pressing part is installed and a pair of chains 110 connected to both sides of the upper beam, and the chain end is connected to the lower coupling part to wrap the pipe Characterized in that the pipe is a circular shape.

8. The method of claim 7,
In the upper beam 120 and the lower connection part 140,
Wherein a plurality of connection holes (112) are formed at predetermined intervals so that the chains are connected to each other so that the interval between the chains can be adjusted.

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A frame part installed to surround the outer surface of the pipe;
A curved panel 222 which is located at the inner side of the frame and is in close contact with the outer surface of the pipe at an end thereof is assembled to the cylinder of the hydraulic jack 220 and presses the outer side of the pipe by hydraulic pressure to correct the circularity, ; &Lt; / RTI >
The frame part 100 includes an upper coupling part for wrapping the upper side and both sides of the pipe and a lower coupling part 140 detachably coupled to both ends of the lower coupling part,
The upper coupling part is composed of an upper beam 120 provided with the pressing part and a pair of wires 110 connected to both sides of the upper beam, and the wire end part is connected to the lower coupling part to wrap the pipe Characterized in that the pipe is a circular shape.