KR101831254B1 - Protection type connection apparatus structure of underground distribution line - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a structure of a protective connection device for an underground distribution line, and more particularly to a structure of a protection connection device for an underground distribution line, Thereby enabling the external space efficiency of the underground ship to be increased. Also, by inserting the underground line inserting hole into which the underground distribution line is inserted, it is possible to prevent the coating of the underground distribution line line from hardening by moisture, To an underground distribution line protection type connection device structure for preventing a ground connection line.

Description

[0001] PROTECTION TYPE CONNECTION APPARATUS STRUCTURE OF UNDERGROUND DISTRIBUTION LINE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a structure of a protective connection device for an underground distribution line in a distribution technology field, and more particularly to a structure of a protection connection device for an underground distribution line, So that the efficiency of the outer space of the entire underground ship can be increased while the underground distribution line is kept horizontal and can be introduced into the underground ship inserts so that the input can be effectively performed with a small force To a structure of a protection type connection device for an underground distribution line.

The electricity distributed from the primary substation or the secondary substation is transmitted or distributed to the reception facilities of each customer through the transmission and distribution system composed of the processing distribution line and the underground distribution line. The electricity is distributed to the customer through the special high pressure customer, the high pressure customer and various outdoor installation transformers. It is used for industrial and domestic purposes.

Among them, the transmission and distribution system using the ground through the transmission and distribution system composed of the underground distribution line, the underground channel adapter is provided in the underground distribution line through which the underground distribution line is led, the plug is connected to the end of the underground distribution line, .

However, since the underground distribution line connection structure according to the related art is fastened to the underground channel adapter only when the plug is fixedly connected to the end of the underground distribution line, if the length of the underground distribution line is too long, And the space efficiency is lowered, the worker's traffic is uncomfortable, and the appearance is not good.

A Korean Patent Registration No. 10-1317908 (Oct. 16, 2013) discloses a "underground distribution line protective connection device" as a prior art that partially improves such a problem.

However, such a conventional underground distribution line protective connection mechanism requires a large amount of force when the underground distribution line is struck or warped before it is introduced into the underground line inserting hole, There is a problem that the grappling means may be broken or loosened due to contact with the grappling means.

Korea Patent Registration No. 10-1317908 (Oct. 16, 2013) 'Underground Distribution Line Protection Connection Device'

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide an underground power distribution system, in which an underground power distribution line is introduced, To enable the external space efficiency of the entire underground ship to be increased and to allow the underground distribution line to be introduced into the underground line inserting hole while keeping the horizontal underground distribution line effectively, And to provide a protective connection device structure of the same.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned object, the present invention is characterized in that the underground distribution line (1) is provided in the shape of a cylinder in the underground distribution ship (3), and the underground distribution line An underground pipe adapter 200 formed with a male thread over the entire outer circumferential surface exposed to the outside of the underground ship 3; An underground line through hole (301) communicating with the underground line receiving port (201) is formed inside the underground line adapter (200) in a cylindrical shape having a male thread formed over the entire outer circumferential surface, The inner diameter of the underwater through hole 301 gradually decreases from the end portion of the channel adapter 200 toward the end contacting with the underground pipe adapter 200, Means (300); And a guide inserting hole 510 having a female screw thread formed on the entire inner circumferential surface so as to surround and fasten the ground guide adapter 200 and the grab guiding means 300 are formed in a cylindrical shape, And the grab guiding means 300 is horizontally disposed along the longitudinal direction inside the guide inserting opening 510 before being fastened to the grab guiding means 300. The grab guiding means 300 is guided by the guide The underground line grip portion 520 forming the underground line inserting hole 501 is deformed to be collapsed due to contact with the grab insertion guide portion 310 as it is gradually fastened to the inside of the insertion port 510, Wherein the grab guiding means (300) protrudes from the end contacting the underground conduit adapter (200) toward the underground conduit adapter (200) And a plurality of fixing protrusions 400 symmetrically formed around the underwater through hole 301. The underground channel adapter 200 has the fixing protrusions 400 A plurality of protrusion receiving recesses 210 are formed in the inner circumferential surface corresponding to the guide inserting holes 510 of the guide inserting hole 510. The underground wire grip portion 520 of the grappling means 500 is inserted into the guide inserting port 510 A plurality of cut-out portions 521 having an outer diameter smaller than the inner diameter and first contacting the grab insertion guide portion 310 are formed symmetrically with respect to the periphery of the underground insertion hole 501, The apparatus according to one of claims 1 to 3, further comprising a horizontal support part (600) for guiding the underground distribution line (1) to be smoothly drawn into the underground line insertion opening (501), wherein the horizontal support part (600) On the rear of And, the support plate 610 to the upper portion to the ground distribution lines (1) to pass through; Guide means 620 provided on the support plate 610 for guiding the progress of the underground distribution line 1; And a support means 630 for supporting the support plate 610 from the grappling means 500. The support means 630 is coupled to the outside of the grappling means 500 with both ends thereof opened A housing 631 at the rear end of which a lead-in groove 632 through which the front end of the support plate 610 is inserted is formed; And a binding hole 633 for binding the support plate 610 to the housing 631. The inlet groove 632 is formed in a state where the housing 631 is coupled with the grappling means 500 And the coupling hole 633 is screwed in the direction of the inlet groove 632 from the outside of the housing 631 and is coupled to the inlet groove 632 while being screwed in the direction of the inlet groove 632. [ (610), and the guide means (620) includes a guide plate (621) positioned on the upper side of the support plate (610); An elastic member 622 for supporting the guide plate 621 from the support plate 610; And a plurality of rollers 623 rotatably installed on the guide plate 621 and on which the underground distribution line 1 is mounted.

According to the present invention, since the underground distribution line can be properly introduced into the inside of the underground ship without being stretched or tangled from the outside of the underground ship comprising the distribution board or the switchboard, the efficiency of the external space of the underground ship can be increased .

In addition, since the underground distribution line can be kept horizontal and can be led into the underground line insertion port, the effect can be obtained even with a small force.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a side sectional view showing a state in which a protective connection device structure of a ground distribution line according to the present invention is coupled.
Fig. 2 is an exploded view showing a state before the protection connection device structure of the underground distribution line is connected in Fig. 1. Fig.
3 is an exploded perspective view of Fig.
4 is a side cross-sectional view showing another embodiment of the protection connection device of the underground distribution line according to the present invention.
5 is an exploded perspective view of Fig.
6 is a side sectional view showing a state in which the horizontal holding portion is provided in FIG.
And
7 is a perspective view showing the housing in Fig.

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

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And should not be construed as limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein.

It should be understood that the embodiments according to the concept of the present invention are not limited to the particular mode of disclosure but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Since the present invention uses the following patent application 1317908 as it is, the features of the device configuration described below can be understood as those described in Patent Registration No. 1317908. [

However, in the present invention, the 'underground distribution line protection connection mechanism' of the configurations disclosed in the above-mentioned Japanese Patent No. 1317908 is replaced with 'the protection connection apparatus structure of the underground distribution line,' and the underground distribution line is kept horizontal, And further includes a structure and an operation description thereof for smoothly drawing into the insertion port, and this part is the most important constitutional feature.

Therefore, the device structure, characteristics, and operation relationship described below will be incorporated by reference in the above-mentioned Japanese Patent No. 1317908, and the structure related to the main features of the present invention will be described in detail at the rear end.

1 to 5, a structure of a protective connection device for underground distribution line (hereinafter referred to as "connection device structure") 100 according to the present invention includes an underground distribution line 3 is a perspective view of the underground pipe adapter 200 according to the first embodiment of the present invention; FIG. 3 is a perspective view of the underground pipe adapter 200; FIG. And a grab fastening means (500) provided thereon.

This allows the underground distribution line 1 to be connected to the underground ship 3 without being tangled or tangled on the outside of the underground ship 3 by the connection apparatus structure 100 regardless of the length of the underground distribution line 1 So that the space efficiency can be increased, the worker can easily pass through, and the appearance can be made clean.

The underground ship 3 can be a distribution box in the transmission system, and can be a distribution board in the reception system.

The ground distribution line 1 may be a line in which a plurality of underground distribution power lines are bundled inside.

As shown in FIGS. 1 and 3, the underground pipe adapter 200 is formed in a cylindrical shape in the underground ship 3, and an underground pipe receiving hole 201 through which the underground distribution line 1 passes is formed inside the underground pipe adapter 200 And a male thread is formed over the entire outer circumferential surface exposed to the outside of the underarm body 3.

As shown in FIGS. 1 to 3, the grab guiding means 300 is formed in a cylindrical shape having a male screw thread over the entire outer circumferential surface thereof, and has an underground through hole 301 communicating with the underground receiving hole 201, And the inner diameter of the underground penetrating hole 301 is gradually reduced from the end directed to the underground pipe adapter 200 toward the end contacting with the underground pipe adapter 200, Is formed inside.

In this way, male threads are formed on the outer circumferential surface of the underground pipe adapter 200 and the grip guide means 300, and a female screw thread is formed on the inner circumferential surface of the grappling means 500, The underground pipe adapter 200 and the grab guiding means 300 are clamped and tightened, so that the clamping force is further strengthened, and in particular, the clamping force can be further improved to prevent vibration loosening and the like.

As shown in FIG. 3, the grab guiding means 300 protrudes from the end contacting the underground channel adapter 200 toward the underground channel adapter 200 and extends along the circumference of the underground channel through hole 301 And includes a plurality of fixing protrusions 400 which are formed symmetrically with respect to each other.

The underground pipe adapter 200 may have a plurality of protrusion receiving grooves 210 formed on an inner circumferential surface thereof and corresponding to the fixing protrusions 400 along the perimeter of the underground receiving hole 201.

The grab guiding means 300 is brought into contact with the underground conduit adapter 200 before the grab guiding means 300 is fastened to the underground conduit adapter 200 by the grappling means 500, The fixing protrusion 400 is inserted into the protrusion receiving groove 210 so that the grab guiding means 300 can be fixedly coupled to the underground pipe adapter 200. Thus, 500 can be more easily performed.

1 to 3, the grappling means 500 includes a guide inserting hole 510 in which a female screw thread is formed so as to surround and fasten the grappling guide means 300 and the underground channel adapter 200 and the grab guiding means 300 Respectively.

The grappling means 500 is formed in a cylindrical shape so that the underground line insertion port 501 communicating with the underground line through hole 301 is formed and before the grappling means 500 is fastened to the grab guide means 300, The grip guide means 300 is horizontally moved along the longitudinal direction inside the grip guide means 300 and is gradually deformed due to contact with the grab insertion guide portion 310 as the grip guide means 300 is gradually fastened to the inside of the guide insertion hole 510, And an underground line grab 520 forming an insertion port 501 is provided inside.

2, before the underground channel adapter 200 and the grab guiding means 300 are fastened by the grappling means 500, the underground distribution line 1 is connected to the connection device structure 100 To be freely inserted into or withdrawn from the inside of the underground ship (3).

1, the underground wire grip portion 520 is compressed to grip the underground distribution line 1 in tight contact with the underground distribution line 1, Is inserted into the inside of the underground ship body (3) without being stretched or tangled outside the underground ship body (3) by the connection device structure (100) The efficiency can be increased, the worker can pass easily, and the appearance can be made neat.

That is, before the underground pipe adapter 200, the grip guide means 300 and the grappling means 500 are all engaged, the grab guide means 300 is connected to the underground distribution line 1), when the underground pipe adapter 200, the grab guide means 300 and the grappling means 500 are both fastened, the underground wire grip portion 520 is moved to the underground distribution line 1 So that the underground distribution line (1) is prevented from moving further.

As shown in FIGS. 2 and 3, the underwater line grip portion 520 is formed to have an outer diameter smaller than an inner diameter of the guide insertion hole 510 inside the guide insertion hole 510.

The underwater line grip portion 520 may be formed such that a plurality of cutouts 521 are symmetrically formed along the perimeter of the underground line inserting hole 501 at an end of the underground line grip portion 520 which first contacts the grab insertion guide portion 310.

As the grab guiding means 300 is gradually fastened to the guide inserting port 510, the grab insertion guide portion 310 and the underground wire grabber 310 gradually become closer to the end contacting with the underground conduit adapter 200, So that the gap between the plurality of cutouts 521 is gradually narrowed so that the underground line grab 520 is deformed to be broken.

As shown in FIGS. 4 and 5, the fixing protrusion 400 may be further provided with an auxiliary grabber 410 in a shape that is symmetrical with respect to a direction in which the underground wire grip 520 slips.

Thus, even when an additional external force is applied to the underground distribution line 1 by the connection device structure 100 and then pulled and pulled in the direction of drawing or pulling out after being drawn into the inside of the underground ship 3, The underground distribution line 1 can be fixedly supported without being deformed by the gripping of the underground line grab 520 and the auxiliary grab 410.

4 and 5, elastic fingers 420 may be further provided at the ends of the auxiliary grabber 410 and the ends of the underground wire grip 520. The elastic fingers 420 may be made of an elastic material such as rubber.

Thus, even when an external force is applied to the underground distribution line 1 in the direction of drawing or pulling out after the connection device structure 100 is pulled into the inside of the underground ship 3, the underground distribution line 1 Can be prevented from being damaged by external force by the elastic fingers 420 while being firmly supported by the elastic fingers 420.

With reference to FIG. 1 to FIG. 3, a description will be given of a process in which the underground distribution line 1 is drawn into the underground ship 3 by the above-described connection structure 100. FIG.

First, the underground distribution line 1 is inserted into the underground line inserting port 501 of the grappling means 500 and inserted into the underground line through hole 301 of the grab guide means 300, (201) of the underground ship (200) so as to enter the inside of the underground ship (3).

Subsequently, the length of the underground distribution line (1) remaining on the outside of the underground ship (3) is adjusted so that the underground distribution line (1) is properly pulled out so as not to be stretched or tangled outside the underground ship Or adjust the length of the underground distribution line (1) outside the underground ship (3).

The fixing protrusion 400 of the grab guiding means 300 is inserted into the protrusion receiving groove 210 of the underground channel adapter 200 so that the grab guiding means 300 is inserted into the underground channel adapter 200, Respectively.

Finally, the underground pipe adapter 200 and the grab guiding means 300 are enclosed and fastened to the grappling means 500.

The underground wire grip portion 520 contacts the grab insertion guide portion 310 of the grab guiding means 300 and is deformed in a collapsed manner so that the underground wire 1 is held in close contact with the grab- .

This allows the underground distribution line 1 to be connected to the underground ship 3 without any tension or tangling on the outside of the underground ship 3 regardless of the length of the underground distribution line 1 3), so that the space efficiency outside the underground ship 3 can be increased.

6 to 7, the present invention includes a configuration of a horizontal support portion 600 for allowing the underground distribution line 1 to be horizontal and to smoothly enter the underground line insertion port 501, as shown in FIGS. Is implemented.

The underground distribution line 1 located at the rear of the grappling means 500 is substantially horizontally aligned with the underground line inserting hole 501 in the horizontal support part 600 about the direction in which the underground line inserting port 501 is inserted So that the entrance can be effectively performed even with a small force.

This is because the underground distribution line 1 needs to be squeezed or warped before the underground line inserting port 501 is pulled in, so that a large amount of force is required to enter the underground line inserting port 501 and the grappling inserting means 500, the grappling means 500 may be broken or loosened.

The horizontal support part 600 is disposed at the rear of the grappling means 500 and has a support plate 610 through which the underground distribution line 1 passes and an upper part of the support plate 610, A guiding means 620 for guiding the progress of the operation lever 1 and a supporting means 630 for supporting the supporting plate 610 from the grappling means 500.

The support means 630 is open at its both ends to be coupled to the outside of the grappling means 500 and is recessed from the rear end toward the front end to form a receiving groove 632 to which the front end of the supporting plate 610 is coupled And a coupling 633 for coupling the housing 631 and the support plate 610 to the housing 631.

The grappling means 500 is threaded on the outer circumferential surface and the housing 631 is screwed to the outside of the grappling means 500 while forming a thread on the inner circumferential surface.

The inlet groove 632 is located at the lower portion of the underground insertion hole 501 in a state where the housing 631 is completely engaged by the grappling means 500. At this time, it is preferable that the center of the inlet groove 632 is positioned on the same vertical line as the center of the underground insertion hole 501.

It is most preferable that the housing 631 has a tubular shape in which both ends are opened, and the outer periphery has a square shape. That is, the housing 631 is formed in the shape of a rectangular barrel having a circular inner circumference and a rectangular outer periphery.

The inlet grooves 632 may have a curved shape while both ends of the inlet grooves 632 extend along the inner circumferential surface of the housing 631.

Both ends of the support plate 610 extend in the longitudinal direction of the underground distribution line 1, and a front end portion thereof is led into the lead-in groove 632.

The support plate 610 may have a flat plate shape or a curved plate shape in which both side ends thereof protrude downward.

The coupling hole 633 may be formed of a bolt having a thread on the outer circumferential surface and may be formed of a single or a plurality of screws and may be screwed in the direction of the inlet groove 632 from the outside of the housing 631, The support plate 610 is press-coupled.

The housing 631 extends from the outer side in the direction of the inlet groove 632 and communicates with the inlet groove 632 and a hollow 634 into which the binding hole 633 is screwed is formed.

It can be understood that the hollow 634 is formed in a direction from the lower portion of the housing 631 toward the lead-in groove 632 with reference to when the lead-in groove 632 is located at the lower portion.

The supporting means 630 may further include a coupling member 635 extending outwardly from the periphery of the hollow 634 and threaded on an inner circumferential surface thereof so that the coupling hole 633 is screwed.

The coupling member 635 may be a nut or the like and may be fixed to the housing 631 by welding or the like so that the inside thereof communicates with the hollow 634.

The guide means 620 includes a guide plate 621 positioned on the support plate 610, an elastic member 622 supporting the guide plate 621 from the support plate 610, And a plurality of rollers 623 rotatably mounted on the underground distribution line 1 on which the underground distribution line 1 is mounted.

Both ends of the guide plate 621 are formed to extend in the longitudinal direction of the support plate 610 and are formed to be shorter in width than the support plate 610.

The elastic member 622 is most preferably formed of a spring and a plurality of the elastic members 622 are disposed along the longitudinal direction of the guide plate 621 to support the guide plate 621 from the support plate 610 while the underground distribution line 1 And the like, through the plurality of rollers 623.

The roller 623 is formed to extend in a direction intersecting with the longitudinal direction of the guide plate 621 so that both ends of the roller 623 can stably support the underground distribution line 1 while being rotated as the underground distribution line 1 advances So that the underground distribution line (1) can be smoothly led into the underground inserting port (501).

The horizontal support part 600 may further include adjusting means 640 for adjusting a distance between the support plate 610 and the guide plate 621.

The adjusting means 640 includes an adjusting bar 641 whose upper portion is connected to a lower portion of the guide plate 621 and whose lower portion extends downward and penetrates the supporting plate 610, And an adjustment member 642 screwed to the adjustment bar 641 so as to be positioned.

The adjusting bar 641 is screwed to the adjusting bar 641 while a thread is formed on the outer circumferential surface thereof and the adjusting member 642 is threaded on the inner circumferential surface.

That is, the adjusting unit 640 adjusts the separation distance between the support plate 610 and the guide plate 621 by varying the elasticity of the elastic member 622 in accordance with the rotation of the adjustment member 642 .

The adjusting means 640 can variably adjust the distance between the support plate 61 and the guide plate 621 in accordance with the rotation of the adjusting member 642 so that the underground distribution line 1, So that it can be guided to be maintained substantially horizontally with the guide plate 501.

The support means 630 may further include a wire 636 for supporting the rear end of the support plate 610 from the housing 631.

It is preferable that the wires 636 are formed as a pair and both sides of the rear end of the support plate 610 are connected to the housing 631.

The wire 636 may be installed after the support plate 610 is coupled to the housing 631 in a state where the housing 631 is coupled to the grappling means 500.

Thus, the connecting device system can be installed so that the underground distribution line 1 can be pulled in while the underground distribution line 1 is drawn into the underground distribution line 1 to the underground line insertion port 501, can do.

1: underground distribution line 3: underground ship whole
100: connection device structure 200: underground channel adapter
210: projection receiving groove 300: grip guide means
310: Grab insertion guide part 400: Fixing projection part
410: auxiliary grip portion 420: elastic finger
500: grappling means 501: underground insertion hole
510: guide inserting port 600: horizontal supporting part
610: Support plate 620: Guide means
621: guide plate 622: elastic member
623: roller 630: support means
631: housing 632: inlet groove
633: Bonding hole 634: hollow
635: binding member 636: wire
640: adjusting means 641: adjusting bar
642:

Claims (1)

The underground distribution line (1) is formed in a cylindrical shape in the underground distribution ship (3) into which the underground distribution line (1) is led. The underground distribution line (1) An underground pipe adapter 200 formed with a male thread over the entire outer circumferential surface exposed to the outside;
An underground line through hole (301) communicating with the underground line receiving port (201) is formed inside the underground line adapter (200) in a cylindrical shape having a male thread formed over the entire outer circumferential surface, The inner diameter of the underwater through hole 301 gradually decreases from the end portion of the channel adapter 200 toward the end contacting with the underground pipe adapter 200, Means (300); And
A guide inserting hole 510 having a female screw thread formed on the entire inner circumferential surface thereof so as to surround and fasten the ground guide adapter 200 and the grab guiding means 300 is formed in a cylindrical shape so as to communicate with the underground line through- The grab guiding means 300 is horizontally disposed along the longitudinal direction inside the guide inserting opening 510 before being fastened to the grab guiding means 300 and the grab guiding means 300 is inserted into the guide inserting opening 510, A grab fastening means (not shown) having an underground wire grip portion 520 for forming the underground wire inserting hole 501 to be deformed in a collapsed state by being in contact with the grab insertion guide portion 310, 500, < / RTI >
The grab guiding means 300 includes a plurality of fixing protrusions 300 protruding toward the underground conduit adapter 200 from the end contacting the underground conduit adapter 200 and symmetrically formed around the underground conduit 301, (400)
The underground pipe adapter 200 is formed with a plurality of protrusion receiving grooves 210 formed in the inner circumferential surface corresponding to the fixing protrusions 400 along the periphery of the underground receiving hole 201,
The underground wire grip 520 of the grappling means 500 has an inner diameter smaller than the inner diameter of the guide inserting hole 510 inside the guide inserting hole 510 and is formed in the end Wherein a plurality of cut-out portions 521 are formed symmetrically with respect to the periphery of the underground line insertion port 501,
A horizontal support part 600 for guiding the underground distribution line 1 located at the rear of the grappling means 500 to be guided smoothly into the underground line inserting hole 501 while keeping the horizontal underground line inserting hole 501 horizontal Further included,
The horizontal support part (600)
A support plate (610) located behind the grappling means (500) and through which the underground distribution line (1) passes;
Guide means 620 provided on the support plate 610 for guiding the progress of the underground distribution line 1; And
And support means (630) for supporting the support plate (610) from the grappling means (500)
The support means (630)
A housing 631 having both ends opened to be coupled to the outside of the grappling means 500 and having an inlet groove 632 through which the front end of the support plate 610 is inserted at the rear end;
A binding hole 633 for binding the support plate 610 to the housing 631; And
And a wire (636) for supporting a rear end portion of the support plate (610) from the housing (631)
The grappling means (500)
A thread is formed on the outer peripheral surface,
The housing (631)
A screw thread is formed on the inner circumferential surface and screwed to the outside of the grappling means 500,
The lead-in groove 632 is formed in a substantially U-
The housing 631 is positioned at the lower portion of the underground insertion port 501 in a state where the housing 631 is coupled to the grappling means 500,
The binding means 633,
The support plate 610 is screwed in the direction of the inlet groove 632 from the outside of the housing 631 and presses the support plate 610 coupled to the inlet groove 632,
The guide means (620)
A guide plate 621 positioned above the support plate 610;
An elastic member 622 for supporting the guide plate 621 from the support plate 610; And
And a plurality of rollers (623) rotatably provided on the guide plate (621) and on which the underground distribution line (1) is mounted,
The elastic member 622,
A plurality of the rollers 623 are supported by the underground distribution line 1 while the plurality of rollers 623 are arranged along the longitudinal direction of the guide plate 621 to support the guide plate 621 from the support plate 610, The vibration or shock generated while passing through the vibration damping device is buffered,
The horizontal support part (600)
Further comprising adjusting means (640) for adjusting a separation distance between the support plate (610) and the guide plate (621)
The adjusting means (640)
A control bar 641 connected to the lower portion of the guide plate 621 and extending downward downward and passing through the support plate 610; And
And an adjusting member (642) screwed to the adjusting bar (641) so as to be positioned below the supporting plate (610)
The regulating member 642,
The elastic member 622 contracts and slackens according to the rotation so that the distance between the support plate 610 and the guide plate 621 can be variably controlled so that the underground distribution line 1 is horizontally To be maintained,
The wire (636)
And the supporting plate 610 is connected to the housing 631 while both ends of the rear end of the supporting plate 610 are connected to the housing 631. In the state where the housing 631 is coupled to the grappling means 500, 631), and is installed after the connection of the underground distribution line.

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