KR100714907B1 - water proof appratus for laying electric and signal cable - Google Patents

Abstract

It is used for wiring various electric power and communication cables to a pipe line installed between a manhole and a manhole. In particular, a cable duct waterproofing device capable of securing a space for installing a cable in a watertight state in a pipeline having a limited size .

Such a cable-channel waterproofing apparatus is provided with fixing rings which are spaced apart from each other and which are spaced apart from each other and which are spaced apart from each other and which are arranged so as to be able to be clamped between the fixing rings, A space for expanding the outer circumferential surface of the cable by a predetermined distance, a space for expanding the space between the stationary rings and the expansion port to the outside of the space, And a spacer in which a support hole for fixing at least one cable is formed in association with the partial extension space.

Manhole duct, retaining ring, inflator, partial expansion space, space for cable routing

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a waterproof waterproofing device,

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view for explaining the entire structure of a cable-channel waterproofing apparatus according to the present invention; FIG.

2 is a view for explaining an internal structure of a cable-channel waterproofing apparatus according to the present invention.

FIG. 3 is a view for explaining the fixing ring structure of FIG. 1; FIG.

Fig. 4 is a view for explaining the inflator structure of Fig. 1. Fig.

5 is a view showing a state of use of a waterproofing device for a cable duct according to the present invention.

FIG. 6 is a view for explaining another embodiment of a cable-channel waterproofing apparatus according to the present invention.

More particularly, the present invention relates to a waterproofing device for a cable pipe, and more particularly, to a waterproofing device for a cable pipe, which is used for wiring various electric power and communication cables to a pipe passage provided between a manhole and a manhole, The present invention relates to a cable-channel waterproofing device capable of securing a space for installation of a cable.

Generally, various power and communication cables for power supply and communication transmission are installed in a form that is buried in the ground by using a duct installed between the manholes.

A waterproofing device is installed on the end side of the cable wiring channel communicated with the respective manholes so as to prevent rainwater or various foreign substances from flowing into the channel through the manholes after the cables are wired. And the cables are fixed in an airtight state on the end side of the duct.

Such a device is a communication and power cable conduit waterproofing device of Patent No. 10-0396347 filed in 2001 and registered.

The waterproofing device fixes a cable passing through a pipe connecting the manhole and a neighboring manhole, and fixes a fixing ring, which is divided into two on both sides of the inflating opening formed in the longitudinal direction, to prevent the inflow of wastewater or foreign matter into the pipe A cable conduit waterproofing device coupled with a member,

Wherein the inflatable portion is formed in a ring shape having a soft rubber-like incline cut portion,

A tapered coupling protrusion is formed on both sides of the inflator, at least one or more seals are protruded from the cable coupling hole,

And the fixing ring forms a coupling groove to be coupled to the tapered coupling protrusion.

However, according to the prior art waterproofing device, the waterproofing device of the prior art has a size capable of being accommodated in the inside of the coupling hole depending on the size of the expansion hole and the fixing hole disposed on both sides of the expansion hole, It is difficult to obtain satisfactory functionality and operation compatibility when one or more cables are installed according to working conditions.

Particularly, since the pipe line provided between the adjoining manholes is installed in a state where the diameter is mostly standardized, it is possible to secure the installation space of the cable further enlarged through the waterproof device, that is, the coupling hole of the expansion port and the fixed ring There are limits to doing so.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a waterproof and foreign matter- And a waterproofing device with a cable duct.

In order to realize the object of the present invention as described above,

Retaining rings spaced forward and rearward with a space sized to accommodate the cable;

An expanding member arranged to be fastenable between the stationary rings and elastically surrounding an outer circumferential surface of the cable by an operation in which the intervals between the stationary rings are narrowed or widened;

A partial extension space extending from a space of the stationary rings and the inflator to an out-of-plane position of the space;

And a spacer disposed inside the spaces of the fixing rings and the expansion port and having a support hole for fixing at least one or more cables in cooperation with the partial expansion space.

 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention will be described by those skilled in the art to which the present invention is applicable. Therefore, the embodiments of the present invention can be modified into various other forms, so that the claims of the present invention are not limited by the embodiments described below.

1 and 2 are a perspective view and a cross-sectional view showing the entire structure of a cable-channel waterproofing apparatus according to the present invention, and reference numeral 2 denotes a stationary ring.

The stationary ring 2 has a space H1 sized to accommodate at least one or more cables C, and as shown in FIG.

Each of the fixing rings 2 is divided into a semicircular shape as shown in FIG. 3, so that the divided portions are in a state of facing each other as shown in the drawing so as to be broken or broken in a state of wrapping the outer diameter of the cable One end is connected by a hinge connection.

The fixing rings 2 are connected to each other with a fastener D composed of a bolt B and a nut N so as to be spaced apart from each other as shown in FIG. The spacing of the stationary rings 2 is adjusted.

That is, when the nut N is rotated in the tightening direction in the bolt B, the interval between the fixing rings 2 is narrowed along the bolt B, and on the contrary, the nut N is rotated The spacing of the stationary rings 2 can be increased.

1, at least two fasteners D are installed in the circumferential direction of the stationary rings 2, and the stationary ring 2 is made of high strength synthetic resin.

An expansion hole 4 is disposed between the fixing rings 2 as shown in FIG. 2, and the expansion hole 4 has a space H2 having the same size as the fixing rings 2.

The expansion orifice 4 is made of synthetic rubber or the like having self-stretchability. The expansion rings 4 are tightened by a pressing force applied when the spacing between the front and rear fixing rings 2 is narrowed or flared toward the outside and inside in the circumferential direction It expands elastically or is restored to its original state.

The action of the inflatable bulb 4 is such that the cable C can be hermetically fixed with the inflator 4 interposed therebetween in a state where the inflator 4 is installed in the channel P connecting the manhole and the manhole. 2)

The inflator (4) may be provided with one set between the fixed rings (2) or divided into a certain size, and two or more sets may be provided as shown in FIG.

3 and 4 are formed in the fixing rings 2 and the inflator 4 so as to extend further outward beyond the inner spaces H1 and H2.

The partial expansion space H3 extends in a circumferential outer direction of the fixing rings 2 and the inner spaces H1 and H2 of the inflator 4 so that a part of the outer circumferential surface of the cable C can be accommodated. At least one portion is formed in the shape of the groove shown in the figure.

The partial expansion spaces H3 do not deteriorate the durability of the stationary ring 2 and the expansion port 4 in the limited inner spaces H1 and H2 of the expansion rings 4 and the expansion rings 4 It is possible to maximize the space for installing and supporting at least one cable (C) within the range.

If the spaces H1 and H2 are formed in the fixing rings 2 and the inflator 4 in an excessively large size in order to secure a space for accommodating the cable C, It is difficult to secure a space for fastening and the durability of the fixing ring 2 and the inflator 4 deteriorates and it is difficult to realize a smooth waterproof function.

On the other hand, the spacers 6 for supporting at least one or more cables C in the respective inner spaces H1 and H2 at independent points are detachably attached to the stationary ring 2 and the inflator 4 Respectively.

The spacer 6 is formed in a cylindrical shape having a size separable from the fixing rings 2 and the inner spaces H1 and H2 of the inflator 4, Rubber or the like.

1, a support hole 8 for inserting at least one cable C is formed in the spacer 6, and the support hole 8 is formed in each of the partial extension spaces H3, At least one or more positions are formed.

As shown in FIG. 1, the support holes 8 are formed on the outer circumferential surface of the spacer 6 in such a manner that they can be dividedly supported in correspondence with the outer circumferential surface of one cable C in cooperation with the respective partial extension spaces H3. It has an incised section and is formed through.

5, the spacers 6 are disposed inside the expansion rings 2 and the fixing rings 2 in a state where cables C are inserted into the respective support holes 8, H1, and H2, a space for installing the cables C can be secured as much as possible.

Such a structure can easily provide at least one cable C having a relatively large diameter in the limited spaces H1 and H2 of the fixing rings 2 and the inflator 4. [

In the above description, at least one support hole 8 is formed in the side of the spacer 6 corresponding to the partial extension space H3. However, the present invention is not limited thereto.

6, the spacers 6 are formed in correspondence to any one of the spaces H3 among the fixing rings 2 and the partial expansion spaces H3 formed on the side of the expansion port 4. In this case, One support hole 8 may be formed in the other extension space H3 and a protrusion 10 may be formed in the other extension space H3 to occupy each of the spaces H3.

In such a structure, for example, when one cable C is installed in the pipe passage P, one cable C is inserted into the one support hole 8 as shown in FIG. 6 The remaining two partial extension spaces H3 are sealed by the protrusions 10 so that further improved operation compatibility can be obtained during the wiring work of the cable C.

As described above, the cable-channel waterproofing apparatus according to the present invention can maximally secure a space for wiring at least one or more various power and communication cables in a watertight state within a limited space of the stationary ring and the inflator.

Therefore, a further improved working compatibility can be obtained when the cable is hermetically sealed in the channel between the manhole and the manhole.

Claims (6)

Retaining rings spaced forward and rearward with a space sized to accommodate the cable; An expanding member arranged to be fastenable between the stationary rings and elastically surrounding an outer circumferential surface of the cable by an operation in which the intervals between the stationary rings are narrowed or widened; Partial extension spaces formed to extend outwardly from the inner space of the stationary rings and the inflator and formed at one or more points along the circumference of the space; A spacer disposed inside the space of the fixing rings and the inflator and having a support hole for fixing at least one or more cables in association with the partial expansion space; A protrusion formed on the spacer so as to block the space corresponding to the partial extension space; And a cable duct waterproofing device. delete The waterproofing device according to claim 1, wherein at least one or more support holes are formed in the circumferential direction of the spacer corresponding to the partial expansion space. delete The waterproofing device according to claim 1, wherein one or more than one of the expansion rings is disposed between the fixing rings. The waterproofing device according to claim 1, wherein the partial expansion space has a groove shape that can cover a part of the outer circumferential surface corresponding to an outer circumferential surface of the cable.

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