KR100454565B1 - Waterproof device of pipe for wiring communication and electric power cable - Google Patents

Abstract

The present invention relates to a waterproofing device for a communication and power cable wiring pipe, and more particularly, it is easy to install and can prevent the inflow of water or fluid substances without being limited to the installation of the cable, and the crack portion of the pipe. The present invention relates to a waterproofing device for a communication and power cable wiring pipe that can easily discharge water or flowable material introduced therethrough.

Such a waterproofing device for a communication and power cable wiring tube includes a cable fixing body for fixing one or more cables, and a sealing means surrounding the outer circumferential surface of the cable fixing body and installed on the inner circumferential surface of the wiring tube, wherein the sealing means includes: A seal member and a first pressurizing portion and a second pressurizing portion, the gap being adjustable by the fastening member on both sides of the seal member, the second pressurizing portion being provided. It is characterized in that it further comprises a sealing lid coupled to the side to open the seal.

Description

WATERPROOF DEVICE OF PIPE FOR WIRING COMMUNICATION AND ELECTRIC POWER CABLE}

The present invention relates to a waterproof device for a communication and power cable wiring pipe, and more particularly, to prevent water or fluid foreign matter from flowing into the inlet of the wiring pipe, and also to prevent water or foreign matter already introduced through a crack or a connection part. It relates to a waterproof device for the communication and power cable wiring pipe that can be easily drained.

In general, a communication and power cable is installed in a plurality of manholes at a predetermined distance in the transmission path and the manhole and the manhole are connected to the wiring pipe to install the above-mentioned cable in the wiring pipe to communicate and transmit power.

And a waterproofing device is installed to prevent the inflow of water or flowable materials through the inlet of the wiring pipe formed inside the manhole until the cable is buried.

The waterproofing device is generally wound around the outer peripheral surface of the body formed in a shape corresponding to the inner circumferential surface of the wiring tube, the tube-shaped sealing member is installed in the inlet of the wiring tube and then installed a separate compressor (COMPRESSOR) Compressed air is forcibly injected into the seal member through the sealing member to seal the inner circumferential surface of the wiring tube and the outer circumferential surface of the body to perform waterproofing.

If water or fluid is introduced through the surface of the wiring tube or the connection portion caused by natural ground subsidence or external force, the air injected into the seal member is discharged, and then the water is introduced into the tube. After discharging foreign matters, the inside of the wiring tube is sealed and waterproof until the cable is installed through the above-described installation method. If the water or fluid that flows into the wiring tube is not discharged for a long time, the cable Corrosion or damage will cause communication and power transmission failures.

However, since the waterproofing device of the conventional wiring tube has a structure that can be installed only in a state in which the cable is not installed in the wiring tube, the waterproof device has another structure corresponding thereto after the cable is installed. It is difficult to expect satisfactory compatibility and efficiency because a waterproof device should be installed.

In addition, the conventional waterproof device has to be provided with a large compressor in order to inject compressed air into the seal member made of a tube form, so that the work process is very cumbersome and complicated, and the large compressor must be moved to the workplace every time. Excessive labor costs and the cost of purchasing additional equipment must be met.

In addition, the conventional waterproof device is difficult to set in the correct setting position when the sealing member is wound on the outer peripheral surface of the body, and the difference in setting position occurs by the operator, so that the same waterproof quality is not obtained, thereby reducing the waterproof reliability. There is a problem that is caused and there is a problem that causes the construction work.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is not only easy to install, but also to prevent the inflow of water or fluid materials without being limited to the installation of the cable and It is to provide a waterproof device for the communication and power cable wiring pipe that can smoothly discharge the water or foreign substances introduced through the crack of the pipe.

In order to realize the object of the present invention as described above, a cable fixing body for fixing at least one cable, and a sealing means surrounding the outer peripheral surface of the cable fixing body and installed on the inner peripheral surface of the wiring pipe, the sealing means is And a seal member and a first pressurizing part and a second pressurizing part which are installed to be adjustable by a fastening member on both sides of the seal member, and the sealing means is formed of a plate-like plate, It provides a waterproof device for the communication and power cable wiring pipe further comprising a sealing lid coupled to one side to open to seal.

1 is an exploded perspective view of a waterproofing device of a communication and power cable wiring tube according to the present invention.

FIG. 2 is a partially combined perspective view of FIG. 1. FIG.

3 is a side cross-sectional view of FIG.

4 is a cross-sectional view showing a state in which the waterproofing device of the communication and power cable wiring pipe according to the present invention is installed in the wiring pipe of the manhole.

5 is a cross-sectional view showing a mill operation process of the sealing means according to the present invention.

Figure 6 is a cross-sectional view for explaining a process of installing a waterproofing device of a communication and power cable wiring pipe according to the present invention in the wiring pipe.

FIG. 7 is a cross-sectional view illustrating a state provided by FIG. 6. FIG.

Figure 8a is a sectional view showing another embodiment of the sealing means according to the present invention.

8B is a cross-sectional view illustrating still another embodiment of FIG. 8A.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings, and in this embodiment, it is assumed that the waterproofing is provided in a wiring tube formed in a cylindrical shape.

1, 2, 3, 4, the waterproofing device of the communication and power cable wiring tube according to an embodiment of the present invention,

A cable fixing body (2) for fixing at least one cable (C) and a sealing means (4) surrounding the outer circumferential surface of the cable fixing body (2) and installed on the inner circumferential surface of the wiring pipe (P), Means (4) is the sealing member (6), the first pressing portion 8 and the second pressing portion (10) in which the separation distance is adjustable to be installed by the fastening member (B) on both sides of the seal member (6). ).

The cable fixing body 2 is formed of a rubber material having its own elasticity into a cylindrical shape, and at least one guide hole 12 is formed on the circumferential surface of the fixing body 2.

The guide hole 12 is formed in a shape corresponding to the outer circumferential surface of the cable (C) to be buried in the lengthwise direction of the cable fixing body (2) according to the number of the cable (C) to be buried in one or more corresponding thereto This can be formed.

The diameter of the guide hole 12 is preferably formed to be equal to or slightly larger than the diameter of the cable (C) to be inserted, which is too large than the diameter of the cable (C) into which the diameter of the guide hole (12) is inserted. If it is small, the gap is generated and the waterproofing is not made smoothly. If it is formed too large, wrinkles are generated on the surface of the cable fixing body 2, so that the waterproofing is not made and the cable C is not stably supported. Deflection may occur.

When the guide hole 12 is formed in the circumferential direction of the cable fixing body 2, the inner circumferential surface of the guide hole 12 is formed to be slightly out of the outer circumferential surface of the cable fixing body 2. It is preferable to form the cutout portion 14 in the longitudinal direction as shown in the drawing.

The cutout portion 14 formed in the guide hole 12 can be directly installed in the circumferential direction of the cable fixing body 2 when the cable C is installed, and thus has easier assembly. The time required for installation work can be reduced.

The hook member 16 is installed at the center of one side of the cable fixing body 2, and the hook member 16 is inserted into the sealing means 4 in the wiring pipe P and then the manhole ( As the operator working inside the M) to easily adjust the position by hand to set the above-mentioned cable fixing body 2 can be used a conventional eye bolt (EYE BOLT), in addition to the object of the present invention Hanger member (for example, hook, etc.) having a structure that satisfies the can be implemented by various applications.

One or more auxiliary holes 18 are formed on one side of the cable fixing body 2, and the holes 18 are formed only in a predetermined length without penetrating in the longitudinal direction of the cable fixing body 2. do.

The auxiliary holes 18 provide elasticity so that the outer circumferential surface of the cable fixing body 2 is more elastically contacted when pressed by the seal member 6 of the sealing means 4. If the diameter of one of the auxiliary holes 18 is too large or the number thereof increases, the elasticity is relatively lowered. Therefore, in consideration of this, it is preferable to form one or more with a predetermined diameter so that the optimum elasticity can be maintained.

The sealing means 4 is installed on the inner circumferential surface of the wiring pipe (P) surrounding the cable fixing body (2) to prevent the inflow of water or fluid substances into the pipe (P) seal member (6) And the first pressing part 8 and the second pressing part 10 are connected in series to both side surfaces of the seal member 6.

First, the seal member 6 is formed in a ring shape having a predetermined length so as to correspond to the inner circumferential surface of the wiring pipe P to be installed and the outer circumferential surface of the cable fixing body 2, and a cutout portion is formed on one side of the circumferential direction. 20) is formed.

The material of the seal member 6 may be used a rubber material having its own elasticity, at least one or more may be installed in series, which is satisfactory when only one seal member 6 is formed to have a predetermined length. Since elasticity cannot be obtained, by dividing the above length into one or more installations, more improved elasticity can be exerted to increase the sealing force.

In addition, the cutout portion 20 of the seal member 6 is preferably formed in a stepped cut line, which is formed by cutting the cutout portion 20 of the seal member 6 in a straight shape. If the cross-sectional area is deformed when the side pressing force is applied by the first pressing part 8 and the second pressing part 10, a smooth gap is not generated in the cutout part 20 and a gap is generated. Even when inserted into P, it is not properly compatible with the diameter size of the tube.

The first pressing part 8 and the second pressing part 10 are respectively installed in series on both side surfaces of the seal member 6, and these are set so that the distance separated by the tightening or loosening of the fastening member B is adjusted. The structure of the first and second pressing parts 8 and 10 will be described in more detail with reference to the accompanying drawings.

First, the fastening member (B) may be used a pair of bolts (B1) and nuts (B2) and the side of the first fixing part 8, the sealing member 6, the second fixing part 10 At least one penetrates in the direction to fix them and seals the wiring pipe P while narrowing or opening the spaced distances of the first and second fixing parts 8 and 10 described above.

The first pressing part 8 is composed of two arms 8a and 8b having a semicircular shape, and one side of these arms 8a and 8b has a common hinge structure and is connected to a hinge pin 22. It is made of a structure that is expanded or contracted while rotating around the hinge pin (22).

And the other end of the arms (8a, 8b) is formed with a stepped portion 24 is stepped so that a predetermined portion is facing each other when they form a circular shape.

As described above, when the cutouts 24 of the arms 8a and 8b of the first pressing part 8 are formed to contact each other, the arms 8a and 8b are pressed when the seal member 6 is pressed in the lateral direction. They are pressurized with a uniform pressing force without twisting, so that not only the sealing property is further improved but also the durability is increased.

At least one through hole 26 is formed in the circumferential surface of the first pressing part 8, and a fixing groove 26a is formed at one side of the through hole 26.

The through hole 26 is fastened to the fastening member B, that is, the bolt B1, and the fixing groove 26a prevents the head of the bolt B1 from being seated and rotated.

The fixing groove 26a is formed as a hexagonal groove corresponding to the head of the bolt B1, and may be formed in various shapes satisfying the object of the present invention.

In the circumferential direction of the first pressing part 8, the reinforcing part 28 may be formed in a normal rib shape. When the reinforcing part 28 is formed in this way, the material cost can be reduced significantly while maintaining the durability. have.

On the other hand, the second pressing unit 10 is provided spaced apart from the first pressing unit 8 by a predetermined interval with the seal member 6 therebetween.

The second pressing part 10 is composed of two arms 10a and 10b having the same shape as that of the first pressing part 8, that is, a semi-circle shape, and one side of these arms 10a and 10b is hinged. The other end is connected to the pin 30 and the other end forms a cutout step 32 so that a predetermined portion is in contact with each other when they form a circular shape.

The arms 10 and 10b of the second pressing part 10 have a through hole 34 corresponding to the through hole 26 drilled through the arms 8a and 8b of the first pressing part 8. The through member 36 is formed in the same position as that of the seal member 6, so that the bolt B1 has the first pressing portion 8, the sealing member 6, and the second pressing portion 10. ) Through the through holes (26, 36, 34) in order to be fixed by the nut (B2) in the second pressing portion 10, wherein the head of the bolt (B1) is the first pressing portion It is fixed to the fixing groove 26a formed in (8), so that the slip does not occur when the nut B2 is tightened or loosened and is stably maintained.

Although not shown in the drawings, when the nut B2 is engaged with the bolt B1 in the second pressing part 10, when a washer or the like is inserted, the second pressing part ( 10) can be prevented from breaking and show a stronger clamping force.

As shown in FIG. 5, when the nut B2 is tightened, the sealing means 4 having the structure as described above narrows the separation distance between the first pressing part 8 and the second pressing part 10. While pressing the two side surfaces of the seal member 6 installed between them, the shape of the cross-sectional area of the seal member 6 is changed by the lateral pressing force so that the inner diameter D1 is reduced and the outer diameter D2 is enlarged. While contacting the outer peripheral surface of the cable fixing body 2 and the inner peripheral surface of the wiring tube P, the inlet portion of the wiring tube P in which the cable C is embedded is sealed.

Next, a preferred use of the waterproofing device of the communication and power cable wiring pipe according to the present invention will be described in more detail with reference to the accompanying drawings, in the present embodiment in the state that the cable (C) is installed in the wiring pipe (P) As an example, the inlet of the pipe P is sealed.

Referring to FIGS. 4, 6, and 7, first, the guide hole 12 formed in the cable fixing body 2 has the cable C embedded in the inlet of the wiring pipe P inside the manhole M. ) To fix it.

At this time, if the cable (C) is directly inserted from the circumferential outer side of the cable fixing body 2 through the cutout portion 14 formed in the guide hole 12, it can be more easily fixed.

When the insertion of the cable (C) to the cable fixing body 2 is completed as described above, the sealing means 4 is installed in the form of surrounding the outer circumferential surface of the fixing body (2).

The sealing means 4 is inserted in the longitudinal direction of the cable fixing body 2 or the arms 10a, 10b of the first pressing part 8 and the arms 10a, 10b of the second pressing part 10. ) Can be inserted in the circumferential direction by rotating so as to extend around the hinge pins 22 and 30, respectively.

At this time, the seal member 6 is also cut in the same way when the first pressing part 8 and the second pressing part 10 are unfolded around the hinge pin because the cutting part 20 is formed on one side of the circumferential surface. The part 20 is unfolded so that the cable fixing body 2 can be easily wrapped and fixed.

After the sealing means 4 is installed on the outer circumferential surface of the cable fixing body 2 as described above, the sealing means 4 is inserted into the inlet portion of the wiring pipe P.

In this case, the second pressing part 10 is disposed to face the inside of the manhole M so that an operator can easily tighten or loosen the nut B2 connected to the bolt B1.

Then, when the nut B2 coupled to the bolt B1 is rotated in the tightening direction in the second pressing part 10, the separation distance between the first pressing part 8 and the second pressing part 10. As the pressure gradually narrows, both sides of the seal member 6 are pressed.

As described above, when the separation distance between the first pressing part 8 and the second pressing part 10 is narrowed and pressed on both sides of the sealing member 6, the sealing member 6 retains its own elasticity. Therefore, as the cross-sectional area is reduced in the longitudinal direction and enlarged in the direction perpendicular thereto, the inner diameter D1 of the seal member 6 is reduced and the outer diameter is enlarged as shown in FIG. Close to the outer circumferential surface and the inner circumferential surface of the wiring pipe P to completely seal the inlet portion of the wiring pipe P described above (see FIG. 7).

In addition, when the sealing is performed while the cross-sectional shape of the sealing member 6 is changed as described above, the cable fixing body 2 is made of a rubber material having its own elasticity and thus stretches in response to the adhesion of the sealing member 6. As it is deformed to be in close contact with an optimal state, the cable is fixed to the outer peripheral surface of the cable (C) inserted into the fixing body (2) more firmly fixed and further improves the sealing force.

In the above, the waterproofing device of the communication and power cable wiring pipe according to the present invention has been described as an example of sealing the wire pipe (P) in a state in which the cable (C) is embedded, but is not limited thereto and is not limited thereto. It is also possible to seal an inlet part easily even in the state in which the pipe P is an empty pipe.

8A is a view showing another embodiment of the present invention, referring to the accompanying drawings, in which reference numeral 38 denotes a closed lid, which is a seal member 6 of the closure means 4 described above. It is preferably formed of a plate-like plate having a diameter corresponding to the inner diameter and the material is formed of a synthetic resin material having corrosion resistance and workability.

Therefore, in order to seal the wiring pipe P in the state of an empty pipe, the sealing means 4 is installed inside the inlet portion of the wiring pipe P, and then the seal member 6 inside the sealing member 6 of the wiring pipe P is installed. Place one airtight lid 38.

Then, when the nut B2 of the second pressing part 10 is rotated in the tightening direction, the cross-sectional area of the seal member 6 is changed in the same manner as in the above-described embodiment, and the wiring pipe P is While in close contact with the inner circumferential surface and the outer circumferential surface of the sealing lid 38 is to seal the inlet of the wiring pipe (P).

In the above description, the sealing lid 38 is installed inside the sealing means 4 to seal the inlet of the wiring pipe P, but the present invention is not limited thereto.

Referring to FIG. 8B, the sealing lid 40 is formed in a shape corresponding to the diameter of the second pressing portion 10, and the second pressing portion 10 penetrates in the circumferential direction of the lid 40. The through hole 42 corresponding to the hole 34 is formed.

Thus, the through-hole 42 of the sealing lid 40 is installed so as to penetrate the bolt B1 protruding from the through-hole 34 of the second pressing portion 10, the bolt (B1) Fit the nut (B2) to the

As described above, after the sealing means 4 having the sealing lid 40 installed on the side of the second pressing part 10 is installed inside the inlet part of the wiring pipe P, the nut B2 is rotated in the tightening direction. In the same manner as in the above embodiment, the sealing member 6 is in close contact with the inner circumferential surface of the wiring tube P, and the inner side of the sealing means 4 is sealed by the sealing lid 40, so that the wiring tube ( P) can be easily sealed.

In addition, although not shown in the drawings, a soft seal pad (for example, a gasket) may be installed between the sealing lid 40 and the second pressing part 10 to maintain an improved sealing force.

As described above, according to the waterproofing device for the communication and power cable wiring pipe according to the present invention, even if the cable is embedded in the wiring pipe or the air pipe, correspondingly, the inlet of the wiring pipe is sealed in an optimal state, thereby improving waterproof quality and reliability. You can improve at the same time.

In addition, the waterproofing device of the communication and power cable wiring tube according to the present invention can be easily installed or dismantled directly by the operator without additional equipment to provide more convenience and convenience of work as well as cost and time required for maintenance. It can save a lot.

Claims (8)

A cable fixing body for fixing at least one cable, and a sealing means surrounding the outer circumferential surface of the cable fixing body and installed on an inner circumferential surface of the wiring tube, wherein the sealing means includes a sealing member and a fastening member on both sides of the sealing member. And a first pressurizing part and a second pressurizing part which are installed to be adjustable by the gap, and the sealing means is formed of a plate-shaped plate, which is coupled to the inner side or one side of the sealing means to open the sealing lid. Waterproofing device for communication and power cable wiring pipe further comprising. The method according to claim 1, wherein the seal member is made of a rubber material provided with its own elasticity, the shape of the cross-sectional area is elastically by the first pressing portion and the second pressing portion is adjusted the separation distance by the fastening member. Waterproofing device of a communication and power cable wiring tube, characterized in that the sealing of the inside of the wiring tube in a waterproof state while changing. The method of claim 1, wherein the cable retaining body is made of a rubber material having its own elasticity, one or more guide holes for fixing the cable in the longitudinal direction is formed, the guide hole is the sealing operation of the sealing means described above Waterproofing device for a communication and power cable wiring tube characterized in that the sealing member while sealing the outer peripheral surface of the cable fixed to the inside in contact with the sealing member. The method of claim 1, wherein the first pressing portion and the second pressing portion, the two arms of a semi-circular shape rotatably coupled, the separation distance is narrowed or widened by the tightening or loosening operation of the fastening member. Waterproofing device for a communication and power cable wiring pipe, characterized in that for changing the cross-sectional shape of the seal member. The waterproofing device according to claim 1, wherein the fastening member comprises a pair of bolts and screws, and at least one is installed in the sealing means in a circumferential direction. The waterproofing device of claim 1, wherein a stepped cutout is formed at one side of the circumferential surface of the seal member, the first pressing part, and the second pressing part of the sealing means. The method of claim 1, wherein the hook member is provided at the central portion of one side of the cable fixing body, the hook member is waterproof in communication and power cable wiring tube, characterized in that the eye bolt (EYE BOLT) or hook (HOOK) form. Device. delete