KR102050845B1 - Ground distribution cable protective system - Google Patents

Abstract

The present invention provides an underground distribution cable protective enclosure capable of maintaining an opening state or a closing state of a protective enclosure after an opening and closing work is completed. The underground distribution cable protective enclosure comprises: a support mounted on the ground and having a plurality of passage hole units formed therein; a column member extended to stand upwards from a center part of the support, having a hollow hole inside, formed with an opening and closing hole unit formed at one circumferential surface, and having a cover member installed to open and close the opening and closing hole unit; a support main body installed on the column member and having a plurality of storage groove units opposite to the passage hole unit provided therein; a cover unit installed to be slidable to the support main body and simultaneously opening and closing the plurality of storage groove units; a driving unit coupling or separating the cover unit and the support main body to provide a driving force opening and closing the storage groove unit; and a flow preventing unit prevented from being deformed or broken caused by flowing by an external force of a cable fixed to the support main body by the cover unit.

Description

Underground distribution cable protective enclosure {GROUND DISTRIBUTION CABLE PROTECTIVE SYSTEM}

The present invention relates to an underground distribution cable protective enclosure, and more particularly, to underground construction cable construction work when the installation work for inserting and fixing a plurality of distribution cables into the ground can be restrained or released simultaneously. It can save time and cost, and can prevent deformation or breakage while being flowed by external force such as wind of the cable which has been fixed, and separate tools can be used when opening or closing the protective enclosure. The present invention relates to an underground distribution cable protective enclosure that can open and close a protective enclosure and maintain the open or closed state of the protective enclosure after the opening and closing operation is completed.

In general, when the incoming line of the receiving destination is constructed in the pole of the overhead distribution line, the incoming cable is branched through the branch sleeve in the electric power line of the pole, so that the incoming cable is connected to the underground cable. It is guided along the protective tube installed in the pole and connected to the underground cable in the underground.

The prefabricated half-steel plate is bent to the lower end of the high-voltage cable according to the prior art, and the electric pole of the ground is installed at a predetermined height to protect the high-voltage cable to be prized.

And the granular pipe is bent into a U-shaped cross section and fixed to the side of the pole, but in the conventional granular structure of the high-voltage cable, rainwater flows from the upper part of the granular pipe to the lower pipe along the prefabricated steel plate. There was a problem that the water accumulated inside.

In addition, the water accumulated in the lower end of the pipe line is to stay for a long time not only causes corrosion of the pipe line but also has a problem of shortening the service life by generating a water tree phenomenon due to the penetration of moisture between the conductors of the cable or in the insulator.

In order to solve the above problems, the underground cable entry tube protection structure for transmission and distribution has been developed, the protection structure according to the prior art is inserted and mounted on the top of the electric pole standing tube formed at a predetermined height on one side of the pole, It is formed integrally on the upper portion of the tube insertion portion and the tube insertion portion is formed with a fixed projection at intervals, the upper surface is formed to be curved, the protective cap consisting of a head portion formed with a cable through-hole formed with a stepped portion at the bottom at intervals; The tube insert of the protective cap is inserted into the inside, and an inflow prevention protrusion is formed around the edge of the upper end, and a close fitting formed of rubber or silicone is fitted into the cable through hole, respectively. A buffer groove is formed at intervals and includes a cable fixture formed of rubber or silicon.

Background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-1835595 (published on April 19, 2018, the name of the invention: underground incoming cable riser protection structure for transmission and distribution only).

Since the stand-up protection structure according to the prior art requires a separate work to fix the cable every time one cable is installed, the work to fix the cable to the area where the cable is inserted is used when working multiple cables at the same time. This is difficult because it is difficult to reduce the time and cost required for the construction of the distribution line.

In addition, the standing tube protection structure according to the prior art, since the end of the component for fixing the cable is not provided with a separate buffer member can be the cable flow by external force, such as wind after the installation of the cable is completed, There is a problem that the cable or the protective housing may be deformed or broken by the flow.

In addition, the standing tube protection structure according to the prior art, because a separate tool is required for the opening or closing operation of the standing tube, it is difficult for the operator to proceed to open and close the standing tube without using the tool, the opening of the standing tube Since a separate technical configuration for maintaining a state or a closed state is not provided, there is a problem in that the storing or replacing of the cable is not easy.

Therefore, there is a need for improvement.

The present invention can be constrained or released at the same time a plurality of cables at the same time can reduce the time and cost required for underground distribution cable construction work when the installation work to insert and fix a plurality of distribution cables to the ground, Can be prevented from being deformed or damaged while being flowed by external force such as wind of the completed cable, and can open / close the protective enclosure without using a separate tool when opening or closing the protective enclosure. The object of the present invention is to provide an underground distribution cable protective enclosure which can maintain the open or closed state of the protective enclosure after the work is completed.

The present invention, the base is seated on the ground, a plurality of passage holes formed; A pillar member extending upright from the center of the pedestal to an upper side, having a hollow inside, an opening and closing hole formed at one circumferential surface thereof, and a cover member being opened and closed to open or close the opening and closing hole; A support body installed on the pillar member and having a plurality of receiving grooves opposed to the through holes; A cover part slidably installed on the support body and simultaneously opening or closing a plurality of the receiving groove parts; A driving unit coupling or separating the cover unit and the support body to provide a driving force for opening and closing the receiving groove; A power providing unit for supplying power to the driving unit to open or close the cover unit; An accommodating fixing part for accommodating the power providing part in the pillar member to maintain an open state or a closed state of the cover part; And an accommodation holding unit for preventing the power supply unit accommodated in the accommodation fixing unit from being separated from the outside of the pillar member so as not to protrude out of the pillar member.

In addition, the cover portion of the present invention, the drive shaft is inserted into the drive hole slidably; A support panel installed at an upper end of the wandering shaft; A plurality of supports extending radially from an edge of the support panel and disposed to face the receiving groove; And a finishing panel extending downward from an end of the support and closing a circumferential surface of the support body in which the receiving groove is formed.

In addition, the driving unit of the present invention, the main pinion is installed in the pillar member, disposed to face the opening and closing portion; A rack member geared to the main pinion and slidably installed in the pillar member in a vertical direction; A support block installed at an upper end of the rack member and on which the oscillation shaft is seated; And a plurality of guide pinions connected to the upper and lower parts of the rack member and rotatably installed in the pillar member.

In addition, the flow prevention part of the present invention, the chulcha hole portion connected to the drive through the inner wall of the drive hole portion; A tube member which is seated in the inlet hole, is disposed to protrude into the receiving groove, and is filled with a working fluid; And a part of the tube member protruding toward the receiving groove while the working fluid is moved toward the receiving groove by pressing the tube member when the tapping shaft is lowered, and the cable is connected to the inner wall of the finishing panel. It characterized in that it comprises a pressing portion to be in close contact.

Underground distribution cable protective box according to the present invention, a plurality of cables are simultaneously stored in separate spaces at the same time in the pedestal and the support main body is installed upright on the ground, and the plurality of cables are supported at the same time by closing the support body in which the cable is stored Since the cover part is provided, it is possible to store and support a plurality of cables at the same time by one operation, so that the work of fixing the cable to the area where the cable is inserted can be easily performed in a short time. There is an advantage that can reduce the time and cost required.

In addition, the underground distribution cable protective enclosure according to the present invention, after fixing a plurality of cables to one support body, while the cable is repeatedly impacted on the support body while the cable flows by an external force such as wind deformed or damaged There is an advantage that can be prevented to extend the life of the cable and protective enclosure.

In addition, the underground distribution cable protective enclosure according to the present invention, since the power providing unit for providing power to open and close the cover portion is formed integrally with the protective enclosure can open and close the cover without using a separate tool to facilitate the operator's convenience. It is possible to, and is provided with a storage fixing to maintain the open state or closed state of the cover portion, even if the operator stops operating the cover portion in the cover portion open state, the cover portion is not closed and the open state is maintained to support a plurality of cables It can be easily stored in the operation, and if the cover is closed after storing a plurality of cables in the support body, the power supply unit is stored so as not to protrude from the protective housing by the storage fixing means that the cover is opened differently from the intention of the operator There is an advantage that can be prevented.

In addition, the underground distribution cable protective enclosure according to the present invention, because the power supply is provided with a holding portion for maintaining the state that is stored in the accommodating fixing portion, the power providing portion from the accommodating fixing portion by the vibration of the earthquake or the like provided from the outside of the protective enclosure. There is an advantage to prevent the malfunction that is separated and the cover is opened.

1 is an exploded perspective view showing the underground distribution cable protective enclosure according to an embodiment of the present invention.
2 is a cross-sectional view showing an underground distribution cable protective enclosure according to an embodiment of the present invention.
3 is a cross-sectional view showing a drive unit and a power supply unit of the underground distribution cable protective enclosure according to an embodiment of the present invention.
4 is a perspective view showing a drive unit and a power supply unit of the underground distribution cable protective enclosure according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the underground distribution cable protective enclosure according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is an exploded perspective view showing an underground distribution cable protective enclosure according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing an underground distribution cable protective enclosure according to an embodiment of the present invention, Figure 3 is a present invention 4 is a cross-sectional view illustrating a driving unit and a power providing unit of the underground distribution cable protective enclosure according to an embodiment of the present invention, and FIG. 4 is a perspective view showing the driving unit and the power providing unit of the underground distribution cable protective enclosure according to an embodiment of the present invention.

1 to 4, the underground distribution cable protective enclosure according to the embodiment of the present invention is mounted on the ground, and the pedestal 10 and the plurality of passage holes 12 are formed of the pedestal 10 A pillar member which extends upright from the center portion to the upper side, has a hollow inside, an opening and closing hole portion 16 is formed at one circumferential surface, and the cover member 18 is opened and closed to open or close the opening and closing hole portion 16. (14) and the support body (30) provided in the pillar member (14) and provided with a plurality of storage grooves opposed to the passage hole (12), and the slide in the support body (30). Cover unit 50 for opening or closing the receiving groove 32 at the same time, and the drive unit 70 for providing a driving force for opening and closing the storage groove 32 by coupling or separating the cover 50 and the support body 30 And a power for supplying power to the driving unit 70 to open or close the cover unit 50. Study 100 and the power supply unit 100 is accommodated in the pillar member 14 to the storage fixing portion 110 to maintain the open or closed state of the cover 50, and the pillar member 14 to the outside It includes a storage holding unit 130 to prevent the power supply unit 100 accommodated in the storage fixing portion 110 is not protruded to be separated to the outside of the pillar member (14).

Accordingly, when the cable is inserted into the ground, the pedestal 10 and the pillar member 14 are held upright on the ground to be fixed by an anchor, and the cables are respectively provided in the plurality of receiving grooves 32 provided in the support body 30. If the operator operates the power providing unit 100 to provide power to the driving unit 70 after the seat is mounted, the cover unit 50 closes the receiving groove 32 by the operation of the driving unit 70 to store the receiving groove 32. And the cover part 50 are fixed while being inserted into the ground in individual spaces of the plurality of cables.

In this embodiment, each cable can be fixed while simultaneously closing the plurality of storage grooves 32 in a state where a plurality of cables are inserted into each of the storage grooves 32. Compared to this, it is possible to reduce the time and cost of installing underground distribution lines.

On one side of the circumferential surface of the pillar member 14 of the present embodiment, the opening and closing hole 16 is formed to face the driving unit 70, and the power providing unit 100 provides power to the driving unit 70 through the opening and closing hole 16. ) Is inserted into the pillar member 14.

The support body 30 of the present embodiment is formed in a cylindrical shape with a larger diameter than the pillar member 14, is installed on the upper end of the pillar member 14, the receiving groove portion 32 long in the vertical direction on the circumferential surface Are formed at regular intervals.

Since the lower end of the receiving groove 32 is disposed to face the passage hole 12 formed in the pedestal 10, the cable seated in the vertical direction to the receiving groove 32 is inserted into the ground through the passage hole 12 to the ground Distribution line is formed.

Since the driving hole 34 is formed extending from the center of the upper surface of the support body 30 to the bottom and connected to the inside of the pillar member 14, the operation of the driving unit 70 installed in the pillar member 14 is performed by the driving hole portion ( The lifting and lowering of the cover shaft 50 of the cover portion 50 inserted through the 34 is achieved by the lifting operation of the cover 50, the plurality of receiving grooves 32 by the lifting operation of the cover 50 ) Is opened and closed.

In addition, the cover part 50 of the present embodiment includes a sunshade shaft 54 slidably inserted into the driving hole 34, a support panel 52 provided on the top of the sunshade shaft 54, and a support panel 52. A support body radially extending from the edge of the ()), a plurality of support (52a) disposed to face the receiving groove 32, extending downward from the end of the support (52a), the receiving groove 32 is formed And a finishing panel 56 for finishing the circumferential surface of 30.

A driving shaft 54 is inserted into the driving hole 34 so as to be slidable in the vertical direction, and a support panel 52 having a disc shape is integrally formed at the upper end of the driving shaft 54, and the supporting panel 52 is driven. Since the diameter is larger than that of the hole part 34, when the tapping shaft 54 is inserted into the driving hole part 34, the support panel 52 is seated on the upper surface of the support main body 30 so that the tapping shaft 54 is no longer provided. It is prevented from being inserted or lowered into the driving hole 34.

As described above, when the insertion shaft 54 is completed, the support 52a extending laterally from the circumferential surface of the support panel 52 is also seated on the upper surface of the support body 30, and each support 52a is supported. The closing panel 56 installed at the end closes the storage groove 32 while blocking the opening of the storage groove 32.

As described above, as one of the lifting shafts 54 is lifted and lifted, a plurality of the support bases 52a and the finishing panel 56 can be simultaneously lifted or blocked.

Therefore, when the operator seats the cables in the plurality of receiving grooves 32, respectively, and operates the driving unit 70 to lower the support panel 52, the plurality of finishing panels 56 are simultaneously lowered, each of the receiving grooves 32 While closing the cable is fixed to the receiving groove portion 32 is fixed so as not to flow in the lateral direction.

Since the closing panel 56 of the present exemplary embodiment has a width that covers an opening of the receiving groove 32, a gap is formed between the closing panel 56 and the finishing panel 56, and the cover part 50. When the cable is inserted into the storage groove 32 while the opening of the storage groove 32 is opened, the upper portion of the cable is inserted at intervals between the finishing panels 56, and the lower portion of the cable is stored in the storage groove 32. )).

Subsequently, when the cover 50 is lowered, a plurality of finishing panels 56 are lowered to cover the openings of the storage grooves 32, so that the cables are formed through the passages formed by the storage grooves 32 and the closing panels 56. It is arranged to pass.

In addition, the present embodiment further includes a flow preventing part 90 that prevents deformation or breakage by being flowed by an external force of the cable fixed to the support body 30 by the cover part 50 so that installation of the cable is possible. When the cable is flowed by an external force such as wind after completion, the cable and the support body 30 repeatedly collide with each other to prevent the cable or the protective housing from being deformed or broken.

The flow preventing part 90 of the present embodiment is seated in the contact hole part 98 connected to the storage groove part 32 from the inner wall of the driving hole part 34, and the receiving hole part 98, and the receiving groove part 32. It is disposed so as to protrude inward, and is provided in the tube member 94 and the tapping shaft 54 filled with the working fluid, the pressurizing tube member 94 when the tapping shaft 54 is lowered to receive the working fluid While moving toward the groove part 32, a portion of the tube member 94 protrudes toward the receiving groove part 32, and includes a pressing part 92 to closely adhere to the inner wall of the closing panel 56.

Therefore, after inserting the cable into the receiving groove 32, the driving unit 70 is operated in the reverse direction while the descending shaft 54 is lowered while the inside of the tube member 94 is pressed by the pressing unit 92 and the tube member 94. The working fluid filled in the) moves to the receiving groove 32 through the hauling hole 98, and the outer end of the tube member 94 protrudes into the receiving groove 32 to close the cable inner wall 56. Will be pressed.

As described above, since the tube member 94 filled with the working fluid adheres the cable to the inner wall of the finish panel 56, the tube member 94 adheres to the finish panel 56 so that the cable does not flow by an external force such as wind. As a result, the cable or the finishing panel 56 can be prevented from being deformed or broken.

The driving unit 70 of the present embodiment is installed inside the pillar member 14, and is connected to the main pinion 72 and the main pinion 72 which are disposed to face the opening and closing hole 16, and the pillar member 14. The rack member 74, which is slidably installed in the vertical direction, installed on the rack member 74, and the support block 76 on which the oscillation shaft 54 is seated, and the rack member 74 It includes a plurality of guide pinion 78 is connected to the side and the lower portion and rotatably installed in the pillar member (14).

Therefore, when the operator rotates the rotating shaft of the main pinion 72 extending the opening and closing hole 16 to the outside of the pillar member 14, the rack member 74 is raised and lifted the shaft shaft 54 connected to the support block 76 Ascended.

The upper and lower parts of the rack member 74 are geared to the guide pinion 78 and slidably supported, respectively, so that the upper and lower parts of the rack member 74 can be prevented from flowing in the lateral direction when being lifted in the vertical direction.

The power supply unit 100 of the present embodiment includes a rotation shaft 102 extending from the main pinion 72 and a driving shaft 104 extending from the rotation shaft 102 to the outside of the pillar member 14 through the opening and closing hole 16. And a lever member 106 provided at an end of the drive shaft 104 and capable of rotating the drive shaft 104 and the rotation shaft 102 in the same direction.

Therefore, when the operator grabs the lever member 106 and rotates it in the forward or reverse direction, the driving pin 104 and the rotating shaft 102 are rotated, and the main pinion 72 rotates, and the rotational movement of the main pinion 72 is a rack member ( The cover part 50 is raised or lowered while being converted to the linear motion of 74.

As described above, the cover part 50 is raised and opened by the upward motion or the downward motion of the rack member 74, or the operator receives the drive shaft 104 after the operation of closing the cover part 50 by descending is completed. The power supply unit 100 may be accommodated while the power supply unit 100 is accommodated in the fixing unit 110 to constrain the operation of the power supply unit 100.

The storage fixing unit 110 is formed on the outer wall of the pillar member 14 and accommodates the storage groove 114 into which the driving shaft 104 is inserted, and rotates the driving shaft 104 to bend from the rotating shaft 102 to accommodate the storage groove 114. A hinge 112 for rotatably connecting the rotation shaft 102 and the drive shaft 104 to insert the drive shaft 104 into the drive shaft 104, and is formed in a shape that is bent from the receiving groove 114 is bent from the drive shaft 104 It includes a bent groove 116 is received receiving the lever member 106 is connected.

Therefore, when the opening and closing operation of the cover unit 50 is completed by the operation of the power supply unit 100, the operator rotates the drive shaft 104 toward the receiving groove 114 around the hinge portion 112, and the drive shaft 104. ) And the lever member 106 is also inserted into the bent groove 116 when the insertion is confined in the receiving groove 114, the drive shaft 104 and the lever member 106 does not protrude out of the pillar member 14 to the inside It is inserted and stored.

As described above, when the driving shaft 104 is inserted into the accommodating groove 114 and the rotational movement of the rotation shaft 102 is constrained, the rotational movement of the main pinion 72 and the linear movement of the rack member 74 are constrained. The lifting operation of the 50 is constrained so that the open state or the closed state of the cover part 50 can be maintained.

At this time, the rotation center of the rotation shaft 102 is disposed in the X-axis direction, and the rotation center of the drive shaft 104 is disposed in the Y-axis direction, so that the driving shaft 104 is inserted into the receiving groove 114 so that the driving shaft 104 is not rotated about the X-axis. When the rotating shaft 102 is also constrained to rotate.

When the opening and closing operation of the cover part 50 is started, an operator separates the drive shaft 104 from the accommodation groove 114, rotates the drive shaft 104 about the hinge 112, and the center of rotation of the drive shaft 104. When the center of rotation of the rotary shaft 102 is arranged on the same straight line, the operator rotates the lever member 106 while simultaneously providing the rotational movement of the main pinion 72 while simultaneously rotating the drive shaft 104 and the rotary shaft 102. It is possible to provide the lifting motion of the rack member 74 and the cover 50.

In addition, the storage holding unit 130 of the present embodiment, the mounting groove 132 is provided in the lower portion of the bent groove 116, the blocking groove is slidably installed on the upper portion of the bent groove 116 to face the mounting groove 132. After the lever member 106 is inserted into the panel 134 and the bending groove 116, the operation protrusion 136 protruding from the blocking panel 134 to close the bending groove 132 by sliding the blocking panel 134. ).

Therefore, after the opening and closing operation of the cover part 50 is completed, the lever shaft 106 is also inserted into the bending groove part 116 when the driving shaft 104 is rotated about the hinge part 112 and inserted into the receiving groove part 114. Afterwards, when the operator grasps the operation protrusion 136 and slides the blocking panel 134 downward, the bending groove 116 is closed to prevent the lever member 106 from being separated out of the bending groove 116. do.

As described above, when the lever member 106 is constrained, the driving shaft is also constrained to be inserted into the receiving groove 114, so that the opening and closing operation of the cover part 50 is not performed without opening and closing operation in which the cover part 50 is elevated. The state is maintained.

As a result, a plurality of cables can be constrained or released at the same time, thereby reducing the time and cost required for underground distribution cable construction when the installation work is performed by inserting and fixing a plurality of distribution cables into the ground. It can be prevented from being deformed or damaged while being flowed by external force such as cable wind, and can open and close the protective enclosure without using a separate tool when opening or closing the protective enclosure. After completing the above, it is possible to provide an underground distribution cable protective enclosure that can maintain the open or closed state of the protective enclosure.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs may have various modifications and other equivalent embodiments therefrom. Will understand.

In addition, the underground distribution cable protective enclosure has been described as an example, but this is merely exemplary, and the protective enclosure of the present invention may be used in other products other than the underground distribution cable protective enclosure.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

10: pedestal 12: through hole
14: pillar member 16: opening and closing hole
18: cover member 30: support body
32: receiving groove 34: drive hole
50 cover 52 support panel
54: Haul 56: Finishing panel
70: drive unit 72: main pinion
74: rack member 76: support block
78: guide pinion 90: flow preventing part
92 pressurization part 94 tube member
96: step 98: haunt hole
100: power supply unit 102: interlocking groove
104: tool member 106: lever member
110: open holding portion 112: bent hinge portion
114: protrusion

Claims (4)

A pedestal mounted on the ground and having a plurality of passage holes formed therein;
A pillar member extending upright from the center of the pedestal to an upper side, having a hollow inside, an opening and closing hole formed at one circumferential surface thereof, and a cover member being opened and closed to open or close the opening and closing hole;
A support body installed on the pillar member and having a plurality of receiving grooves opposed to the through holes;
A cover part slidably installed on the support body and simultaneously opening or closing a plurality of the receiving groove parts;
A driving unit coupling or separating the cover unit and the support body to provide a driving force for opening and closing the receiving groove;
A power providing unit for supplying power to the driving unit to open or close the cover unit;
An accommodating fixing part for accommodating the power providing part in the pillar member to maintain an open state or a closed state of the cover part; And
And a storage holding unit for preventing the power supply unit received in the storage fixing unit from being separated from the outside of the pillar member so as not to protrude out of the pillar member.
The cover part,
A landing shaft slidably inserted into the driving hole of the support body;
A support panel installed at an upper end of the wandering shaft;
A plurality of supports extending radially from an edge of the support panel and disposed to face the receiving groove; And
And a finishing panel extending downward from an end of the support and closing a circumferential surface of the support body in which the receiving groove is formed.
The driving unit,
A main pinion installed inside the pillar member and disposed to face the opening and closing portion;
A rack member geared to the main pinion and slidably installed in the pillar member in a vertical direction;
A support block installed at an upper end of the rack member and on which the oscillation shaft is mounted; And
It includes a plurality of guide pinions which are connected to the upper and lower parts of the rack member and rotatably installed in the pillar member,
It further comprises a flow preventing unit for preventing the deformation or breakage by flowing by the external force of the cable fixed to the support body by the cover portion,
The flow preventing part,
A haunting hole part connected to the receiving groove part from an inner wall of the driving hole part;
A tube member which is seated in the inlet hole, is disposed to protrude into the receiving groove, and is filled with a working fluid; And
It is provided on the tapping shaft, and when the tapping shaft is lowered by pressing the tube member to move the working fluid toward the receiving groove side portion of the tube member protrudes to the receiving groove side while the cable close to the inner wall of the finishing panel Underground distribution cable protective enclosure comprising a pressurizing portion. delete delete delete

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