KR101914340B1 - Under ground low voltage connection box for height adjustment - Google Patents

Abstract

The present invention relates to an underground low-voltage connection box, in which, when a depth of a hole formed by a tearing machine is greater than a total height of a connection body, The upper part of the upper body relative to the lower body can be horizontally aligned with the ground surface by rotating the transfer bolt installed on the outer side so that it can be buried. Therefore, compared with the conventional method of adjusting the installation height of the underground low- This provides the advantage.
By forming a drain hole on the side of the upper body to which the lid is coupled, the rainwater flowing through the gap between the opening of the upper body and the edge of the lid is effectively drained to the ground, It is possible to completely prevent the inflow and prevent a safety accident caused by electricity.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a low-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground low-voltage connection box, and more particularly, to an underground low-voltage connection box in which an upper height of a connection box is varied, And more particularly to a low-pressure underground connection box for height adjustment that prevents rainwater from accumulating inside a connection box by allowing rainwater flowing toward the edge of the cover to be drained to the ground when raining.

Generally, an underground connection box is used as a means for facilitating the wiring of electric wires embedded in an underground cable, that is, an electric wire buried in the ground in a place connecting or branching in the ground.

Electricity used in each office building, large-scale factory, apartment building, etc., is supplied through a substation equipped for each region. These substations are installed for the purpose of modifying voltage and current and distributing electric power. The power generated by the power plant is sent to the user through the transmission line.

Substations are usually installed on the ground. In such substations, the high-voltage wires are exposed to the outside because they must be fed with a high-voltage current. The high-voltage wires exposed to the outside are short-circuited and short- It is easy to induce, and there are problems such as hurting the surrounding landscape due to the erroneously installed high voltage cable, so that the high voltage cable is installed in the ground, not in the ground.

The underground low voltage connection box is a box embedded in the ground to connect the main cable for supplying electric power to houses, shops, buildings, etc. so that electric power can be supplied to a plurality of power consumers through a plurality of branch cables.

In this underground low-voltage connection box, a connection box main body having a connection space for connecting electric cables is embedded in a lower portion of the ground such as a road or a ledge, and a cover is covered on the connection box main body. The connection space of the connection box main body is opened or blocked with a fixed structure that can not be made.

In order to bury the main body of the connection box other than the open upper part of the connection box provided with the cover as described above, the pit is pierced to a predetermined depth, and the prepared ground connection box main body is buried. Connect or connect branch cables to connect or branch ground cables, connect the cables to each other, and then connect them with cover. The ground around which the underground low-voltage connection box is enclosed is closed with an earth filling finish, and the surrounding ground surface is completed with a typical cement or concrete floor finish.

Among the techniques related to the underground low-voltage connection box, the Korean Registered Utility Model No. 20-0398625 (name: underground low-voltage connection box) is disclosed in view of the prior art related to the connection box installation.

The underground low-voltage connection box provides an underground low-voltage connection box that completely insulates the inside of the connection box from the ground to prevent a safety accident caused by an electric shock. The configuration is such that it is installed in the middle of the underground low-voltage distribution line In a conventional underground low-voltage connection box which is used for branching or branching of a lead-in line or for separating fault sections and embedded in the ground,

A foundation box having a hull space formed vertically through the inside thereof and having a hull flange protruding from an outer periphery thereof; A frame space corresponding to the recessed space portion is formed in the interior of the frame, a cover fixing groove recessed from the upper portion is formed, and the recessed portion is recessed into the inner lower portion of the cover fixing groove A frame made of a synthetic resin material (PE) having a lid fixing groove formed therein; A casting lid fitted into the lid fixing groove of the frame; And a cover which is fitted in the cover fixing groove of the frame and is made of a synthetic resin material (P.E.).

When the upper end of the frame is lower than the upper surface of the frame after the foundation frame is installed, the upper end of the frame may be lowered The height of the frame can be adjusted by joining the height adjusting holes therebetween in order to raise the height of the frame after the foundation frame is installed.

The height adjuster is formed in the shape of a band like the flange of the base frame and the frame flange of the frame. The height adjuster is formed to penetrate through the inside space and the frame space, So that the height of the height adjuster can be set to the height of the top of the connection box at various heights.

However, as described above, in order to adjust the height of the height of the connection box to a height corresponding to the height of the top of the connection box, it is necessary to secure the height adjustment holes of various thicknesses, .

Korea Registration Office 20-0398625 (Registered on October 10, 2005)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is an object of the present invention to provide an underground low-voltage connection box in which, when a trench depth is made deeper than a top height of a connection box, It is possible to improve the installation workability of the connection box as well as to allow the rainwater flowing into the edge of the lid to be drained to the ground at the time of rains so that the rainwater accumulates inside the connection box, The purpose of this is to provide.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet-type connection box main body having an open upper portion; and a lid secured to the upper portion of the cabinet main body by a fixing bolt, In a conventional underground low-voltage connection box used for separating a branching and a failure section and embedded in the ground, the connection box main body has a rectangular opening, a nut is embedded in an upper portion of the upper portion, And a blocking plate for preventing the inflow of soil from the outside is formed by covering the upper outer periphery of the lower body with a rectangular body having upper and lower portions formed thereon at the four corners of the shaft guide portion formed therein, A shaft rotation support portion in which a bushing is embedded is formed at a position perpendicular to the shaft, And an upper body protruding from the lid seating portion and having a plurality of fastening portions for fastening the fastening bolt. The upper body is passed through the shaft rotation support portion of the upper body and fastened to the nut on the shaft guide portion of the lower body And a conveying bolt for vertically conveying the upper body with respect to the lower body as a degree of fastening.

According to the present invention, there is provided a cabinet comprising: a cabinet-type connecting box body having an open upper portion; and a cover which is covered with an upper portion of the cabinet and fixed by a fixing bolt. Wherein the connection body includes a lower body having an insertion groove formed along an opened upper edge thereof and a shaft supporting portion having an axial hole protruding from both sides of the lower body, A shaft receiving portion protruding from a shaft having a female screw hole vertically aligned with a shaft hole of the shaft supporting portion on both sides of the shaft, and a lid mounting portion on the inner side of which the lid is seated; And an upper body protruding from the cover seat portion and having a plurality of fastening portions for fastening the fixing bolts, And the axis of the upper body fastened to send, through the pivot-support section is coupled as a support ring to be prevented from the breaking of the pivot-support section is made is provided in the transfer bolt for vertically conveying the upper body to the lower body.

In the underground low-voltage connection box according to the present invention, when the depth of a hole formed by a tappet is greater than the height of a total height of the connection box main body, the inner bottom of the upper and lower bodies The upper part of the upper body relative to the lower body can be horizontally aligned with the ground surface by rotating the transfer bolt installed on the outer side so that it can be buried. Therefore, compared with the conventional method of adjusting the installation height of the underground low- This provides the advantage.

By forming a drain hole on the side of the upper body to which the lid is coupled, the rainwater flowing through the gap between the opening of the upper body and the edge of the lid is effectively drained to the ground, It is possible to prevent the safety accident caused by electricity by completely blocking the inflow.

1 is a perspective view showing an underground low-pressure connection box of the present invention,
FIG. 2 is a configuration diagram showing an underground low-voltage connection box according to the present invention,
FIG. 3 is a perspective view showing an underground low-voltage connection box according to the present invention,
4 is a longitudinal sectional view showing an underground low-pressure connection box according to the present invention,
5 is a longitudinal sectional view showing a state in which an underground low-voltage connection box according to the present invention is embedded in the ground,
6 is an enlarged cross-sectional view showing an example in which a shielding plate is applied to an underground low-pressure connection box according to the present invention in a detachable and attachable manner,
7 is a perspective view showing an underground low-voltage connection box of another embodiment according to the present invention,
FIG. 8 is a perspective view of the underground low-voltage connection box shown in FIG. 7,
Fig. 9 is a plan view showing the underground low-voltage connection box in Fig. 7,
Fig. 10 is a longitudinal sectional view showing the underground low-pressure connection box in Fig. 7,
FIG. 11 is a longitudinal sectional view showing a state in which the underground low-voltage connection box is buried in the ground in FIG. 7,
12 is a cross-sectional view of an underground low-voltage connection box of another embodiment according to the present invention,
FIG. 13 is a plan view showing the underground low-voltage connection box of FIG. 12,
14 is a longitudinal sectional view showing the underground low-pressure connection box of Fig. 12, Fig.
15 is a longitudinal sectional view showing a state in which the underground low-voltage connection box of Fig. 12 is buried in the ground, Fig.
16 is a cross-sectional view showing the coupling state of the cover of the underground low-pressure connection box according to the present invention.

Hereinafter, other objects and features of the present invention will be apparent from the following description of embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, an underground low-voltage connection box according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. FIG.

And a lid 200 fixed to the upper portion of the connection box main body by a fixing bolt B so as to be installed in the middle of the underground low-voltage distribution line, To a conventional underground low-voltage connection box (10) used for fault section separation and buried in the ground.

The connection body 100 includes a lower body 100 and an upper body 120. The lower body 100 has a nut 113a on the upper side and a nut 113a, A shaft guide portion 113 having a shaft guide groove 113b is formed at four inner corners.

The upper body 120 of the present invention includes a blocking plate 126 for covering the upper outer periphery of the lower body 110 and preventing the inflow of soil from the outside into the lower body 110, A shaft rotation support part 127 in which a bushing BS is embedded is formed at a position perpendicular to the nut 113a of the shaft guide part 113 and a cover seat part 123 and a plurality of fastening portions 124 for fastening the fixing bolts B protruding from the cover seating portion 123. [

The lower body 110 is coupled to the shaft support portion 127 of the upper body 120 and is fastened to the nut 113a on the shaft guide portion 113 of the lower body 110, And a transfer bolt 300 for vertically transferring the wafer 120.

At least one drainage hole 125 is formed in the outer side of the lid seating portion 123 of the upper body 120 to drain the rainwater flowing from the edge of the lid 200 into the ground.

The lower body 110 is provided with an insertion groove 111 along an upper edge opened in a rectangular shape and the upper body 120 is provided with an upper portion and a lower portion in a rectangular shape and inserted into the insertion groove 111 of the lower body 110 And is further provided with a guiding peripheral wall 121.

The blocking plate 126 formed integrally with the upper body 120 may be detachably fixed to the outer circumference of the upper body 120 as a fastening member S as shown in FIG.

In this way, the blocking plate 126 is separately installed, so that the blocking plate can be individually manufactured on the blocking wall according to the molding of the upper body, so that the molding of the upper body can be easily designed. .

Meanwhile, the underground low-voltage connection box 10 of another embodiment according to the present invention is shown in FIGS. 7 to 11.

The connection body 100 includes a lower body 110 having an insertion groove 111 formed along an opened upper edge thereof and a shaft support portion 112 protruding from both outer sides thereof with a shaft hole 112a, And a female thread hole 122a is formed on both sides of the outer circumference of the cylindrical wall 121 so as to be vertically aligned with the shaft hole 112a of the shaft support portion 112 And a lid seating part 123 on which the lid 200 is seated and a fastening part 123 for projecting from the lid seating part 123 and fastening the fastening bolt B 124 are formed on the upper body 120.

The shaft of the upper body 120 is coupled to the shaft portion 112 of the shaft portion 112 so as to be supported by the shaft portion as a support ring 310 to prevent the upper body 120 from moving relative to the lower body 110 And a feed bolt 300 for vertically feeding is fastened thereto.

The transfer bolt 300 has a head part 301 and a threaded part 302 extending from the head part in the longitudinal direction and a ring fixing part 303 for coupling the support ring 310 at the end part .

That is, the feed bolt 300 is a feed screw for vertically moving the upper body with respect to the lower body and guides the upper body vertically, and the cut-off peripheral wall of the upper body includes upper and lower guides for the feed screw, So that it can be extended to a higher height.

At least one drainage hole 125 is formed in the upper portion of the upper body 120 so as to drain the rainwater introduced from the edge of the lid 200 back to the ground.

The upper end of the conveying bolt 300 is positioned on the upper surface of the upper body when the maximum height of the upper body 120 is adjusted from the lower body 110 to the axis 122, And it is preferably formed on both sides of the upper body 120 so as to come to a position to be embedded in the ground without escaping.

Meanwhile, the underground low voltage connection box of another embodiment according to the present invention is as shown in FIGS. 12 to 16 attached hereto.

The underground low-voltage connection box 10 basically comprises the connection body 100 as described above and includes the lower body 110 and the upper body 120. The connection bolt 300 and the lid 200 are connected to each other, And a shaft body 112 having the shaft hole 112a is protruded to face the inside of the lower body 110 and includes an upper body 120 perpendicular to the shaft hole 112a of the shaft support 112, And the height of the upper body 120 is adjusted from the lower body 110 by fastening the transfer bolt 300. [

The upper end of the feed bolt 300 is positioned at the upper end of the upper body 120 when the upper body 120 is adjusted to the maximum height from the lower body 110, It is preferable that the upper body 120 is formed at a position where it is embedded in the ground without leaving the upper surface.

16, a waterproof protrusion 123a is formed on the lid seating part 123 of the upper body 120 so as to protrude along the lid seating part, as shown in FIG. 16, And a groove 202 guided by the leakage preventing protrusion 123a is formed on the bottom surface of the lid 200 to prevent leakage.

The leakage preventing protrusion and the groove may be formed integrally with the upper body and the lid when the lid is formed.

In the drawings, reference numerals P denote packings for preventing leakage of water by being attached to the lower part of the cover, and reference characters G and G indicate ground.

The operation of installing the underground low-voltage connection box constructed as described above will be described below.

First, in order to install the underground low-voltage connection box 10, the underground low-voltage connection box is buried at a position close to the line in the middle of a week by making a wave of a predetermined depth from the ground surface at the corresponding position.

As described above, the depth of the pit must be matched to the entire height of the underground low-pressure connection box 10 prior to the tapping operation, thereby facilitating the operation of embedding the underground low-voltage connection box. However, The upper body 120 of the lower body 110 is raised and lowered by adjusting the transfer bolts 300 provided in the lower low pressure connection case 10 so that the upper body of the upper body, Adjust to the same height.

The transfer bolt 300 is rotated in the leftward direction in the normal direction by rotating the head 301 of the transfer bolt 300 located on both sides using the electric air tool equipped with the box, The rotation of the feed screw portion 302 of the feed bolt 300 is performed by rotating the feed screw portion 302 of the lower body 100 fastened to the feed screw portion 302, And is gradually elevated from the shaft hole 113b as the fastening is released to the nut 113a which is fixed to the shaft 113 by the fixing.

In this operation, when the transfer bolts 300 installed at each of the four points are rotated one by one in the unloading direction by using the electric air tool, the upper body is raised and the upper position of the upper body 120 The elevation of the upper body can be adjusted at a position that coincides with the horizontal position with the ground G to be embedded.

The upward length of the upper body 120 with respect to the lower body 110 may be adjusted to be within the range of 50 to 100 mm with respect to the depth of the recess of the recess 100 to conform to the ground G It is.

The blocking plate 126 located at the outer side of the blocking peripheral wall 121 and the blocking peripheral wall from the insertion groove 111 of the lower body 110 is lifted together with the upper body 120, The blocking plate 126 can prevent the soil from being introduced into the insertion groove 11 when the upper body 120 is raised even when the soil filling is performed to some extent.

As shown in FIG. 5, the blocking plate 126 is provided separately from the upper body 120 by attaching all four sides as the fastening member S and providing another circumferential wall, So that the inflow of soil can be blocked when the upper body 120 is elevated and lowered relative to the body 110.

7 to 11, the use of the underground low-pressure connection box 10 is not limited to the above-described embodiment, and thus, even when the depth of the pit is deep as described above, The axis of the upper body 120 can lift the upper body 120 from the female screw hole 122a of the transmitting part 122. At this time, the blocking peripheral wall 121 of the upper body 120 can be lowered 110 and can be raised and lowered to a required height.

The blocking peripheral wall 121 is drawn out in a state guided in the insertion groove 111. In the state of being drawn out in the future, the boundary portion of the insertion groove 111 is sealed as a sealing material so that leakage can be completely prevented.

As described above, the rotation of the conveyance bolts 300 for raising and lowering the upper body 120 alternately rotates left and right to vertically elevate the upper body 120 to horizontally align the upper and lower bodies 120, Adjust it to about the height of the protruding line about 5mm from the same line or ground.

The head 301 of the transfer bolt 300 is not separated from the upper end of the upper body 120. In this state, the inside of the underground low- Install the cables to be branched or connected to the inside.

In the underground low-voltage connection box 10, a pipe through which the cables (not shown in the figure) are passed is separately inserted into the lower body 110, and after the leakage prevention process, the cover of the upper body 120 The lid 200 is guided to the part 123 and then fixed to the fastening part 124 of the upper body 120 as a fixing bolt B through the fixing hole 201 of the lid 200.

12 to 16 illustrate an underground low-pressure connection box 10 according to another embodiment of the present invention. The upper and lower sides of the upper body 120, which are not the outer sides of the transfer bolt 300, Is assembled through the shaft hole 112a of the shaft support portion 112 located inside the lower body 110 through the female screw hole 122a formed in the portion of the lower body 110 as the support ring 310, The interlocking peripheral wall 121 of the upper body 120 is slid from the insertion groove 111 of the lower body 110 to the ground G as described above by rotating the transfer bolt 300 as shown in FIG. The upper portion of the underground low-voltage connection box 10 is horizontally corrected or matched so that it can be easily buried.

Since the height of the upper body 120 can be changed from the lower body 110 as described above, it is possible to simplify the workability compared with the height adjustment according to the use of the conventional height adjuster.

The drain hole 125 formed on the upper side of the upper body 120 through which the lid 200 is guided is connected to the underground low pressure connection case 10 Even if the inflow of water due to the rainwater, the cleaning of the under floor water or the like occurs in the rain water between the opened part of the upper body 120 and the edge of the lid, rainwater can be quickly impregnated into the ground through the drain hole 125, So that it can be prevented from being introduced into the low-pressure connection box.

It is possible to prevent the inflow of basic rainwater with the packing P provided at the bottom of the lid 200 and to discharge the rainwater directly into the ground without accumulating the rainwater flowing between the gaps, It provides an advantage that can be done.

FIG. 16 is a view showing a lid seating portion of an upper body on which a lid and a lid of an underground low-pressure connection box according to the present invention are seated, and the above-mentioned packing is omitted.

This is because the lid is fastened through the fixing bolt in a state in which the leak preventing protrusion 123a on the lid mounting part 123 side is guided to the groove 202 formed on the bottom surface of the lid 200, The rainwater is discharged to the ground side along the drain hole 125 as described above so that the leakage preventing protrusion 123a completely blocks the inflow of the rainwater into the main body of the connection body, As described above, it is possible to prevent electric safety accidents and the like.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention

10: Underground low pressure connection box 100:
110: lower body 111: insertion groove
112: Axis support portion 112a:
113: shaft guide portion 113a: nut
120: upper body 121: blocking peripheral wall
122: Shaft is transmitted 122a: Female thread
123: cover seat part 123a: leak prevention projection
124: fastening part 125: drain
126: blocking plate 127: shaft rotating support
200: cover 201: fixing hole
202: groove 300: feed bolt
301: Head part 302: Feed screw
303: ring groove portion 310: support ring
B: Fixed bolt BS: Bushing
P: packing S: fastening member

Claims (10)

And a lid 200 fixed to the upper portion of the connection box main body by a fixing bolt B so as to be installed in the middle of the underground low-voltage distribution line, In a conventional underground low-voltage connection box (10) used for fault section separation and buried in the ground,
The connection box main body 100 includes:
A nut 113a is embedded in an upper portion of the upper portion opened by the rectangular body and a shaft guide portion 113 having a shaft guide groove 113b formed inside the lower portion of the lower body 110 )Wow,
A blocking plate 126 for covering the upper outer periphery of the lower body 110 with the upper and lower portions of the lower body 110 to prevent the inflow of soil from the outside is formed at the inner corner 4, And a shaft receiving portion 123 and a lid receiving portion 123 on which the lid 200 is mounted are mounted on the inside of the upper portion of the shaft rotating support portion 127, And an upper body 120 having a plurality of fastening portions 124 for fastening the fixing bolts B,
The upper body 120 and the lower body 110 are coupled to each other through a shaft support portion 127 of the upper body 120 and are fastened to a nut 113a on the shaft guide portion 113 side of the lower body 110, And a conveying bolt (300)
Wherein the blocking plate (126) is detachably fixed to the outer periphery of the upper body (120) as a fastening member (S).
delete delete delete The method according to claim 1,
A protrusion 123a protrudes from the lid seating part 123 along the lid seating part and a groove 202 guided by the leakage protrusion 123a is formed on the bottom surface of the lid 200, Wherein the lower height connection box for height adjustment is characterized in that the height adjustment is performed.
And a lid 200 fixed to the upper portion of the connection box main body by a fixing bolt B so as to be installed in the middle of the underground low-voltage distribution line, In a conventional underground low-voltage connection box (10) used for fault section separation and buried in the ground,
The connection box main body 100 includes:
A lower body 110 having an insertion groove 111 formed along the opened upper edge and a shaft supporting portion 112 having a shaft hole 112a formed on both outer sides thereof,
A cut-away peripheral wall 121 guided in the insertion groove 111 of the lower body 110 is formed on the bottom portion and a female screw hole And a lid seating part 123 protruded from the lid seating part 123 to fix the fixing bolt B to the inside of the upper part. And an upper body 120 having a plurality of fastening portions 124 formed thereon,
The shaft of the upper body 120 is fastened to the transmitting part 122 and is coupled to the lower body 110 through the shaft supporting part 112 so as to be separated from the shaft supporting part 112 as a supporting ring 310. [ And a transfer bolt (300) for vertically transferring the upper body (120)
A protrusion 123a protrudes from the lid seating part 123 along the lid seating part and a groove 202 guided by the leakage protrusion 123a is formed on the bottom surface of the lid 200, Wherein the lower height connection box for height adjustment is characterized in that the height adjustment is performed.
delete The method according to claim 6,
The upper end of the conveying bolt 300 is positioned on the upper surface of the upper body when the maximum height of the upper body 120 is adjusted from the lower body 110 to the axis 122, And is formed on both sides of the upper body (120) so as to come to a position where it is embedded in the ground without escaping.
The method according to claim 6,
The shaft support portion 112 having the shaft hole 112a is protruded to face the inside of the lower body 110 and is fixed to an upper body 120 perpendicular to the shaft hole 112a of the shaft support portion 112 by a female screw hole 122a) are formed on the upper body (120) and the height of the upper body (120) is adjusted from the lower body (110) by tightening the transfer bolt (300).
delete

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