KR102682251B1 - Underground power cable support device - Google Patents

Abstract

The present invention relates to an underground electrical distribution cable buffer for building electricity, wherein a vertical plate (31) is tightly fastened and fastened to a vertical angle (20) fixed to the vertical wall of a power conduit (10), and the vertical plate (31) ) A U-shaped band bracket (30) made of horizontal plates (32) that are bent horizontally from the top and bottom, respectively; A semicircular holder body 41 that is separated into upper and lower sides and is mutually symmetrical, and both ends of the upper and lower holder body 41 are horizontally bent outward and bolts are placed at a certain height on the bent surface of the lower holder body 41. A coupling extension 42 forming the shaft 420 and forming a bolt connection hole 421 on the bent surface of the upper holder body 41 so that the bolt shaft 420 penetrates and opens to the outside. , a cable fixture 43 formed to protrude outward from both sides of the outer circumferential surface of the holder body 41 on the upper and lower sides, a protection pad 44 adhered along the inner circumferential surface of each holder body 41, and each holder body 41. ) on the outer circumferential surface between the cable fixtures 43 on both sides so as to protrude outwardly from the cable fixture 43 so as to be protected from contact or collision impact with the horizontal plate 32 of the band bracket 30. A cable fixing holder (40) provided as a buffer member (45); Each end is fixed to the cable fixture 43 of the upper holder body 41 and the lower holder body 41 of the cable fixing holder 40, and the other end is the band bracket corresponding to each cable fixture 43. It elastically supports the upper holder body 41 and the lower holder body 41 of the cable fixing holder 40 by being fixed to the cable fixture 33 protruding from the horizontal plate 32 of (30). elastic band (50); A thread having the same outer diameter and continuous thread as that of the bolt shaft 420 of the coupling extension portion 42 on both ends of the lower holder body 41 is formed on the outer peripheral surface, and a spiral hole is formed on the upper surface of the bolt shaft 420. At (422), the spiral shafts 610 and 620, which are screwed into the spiral hole 422 from the bottom surface, are formed to protrude from the bottom surface and are screwed together with the lower shaft 61 and the upper shaft 62 and the contracted The upper shaft 62 protrudes upward through the bolt connection hole 421 formed in the coupling extension 42 of the upper holder body 41, which is formed to be spaced apart from the lower and upper parts by the elastic band 50. ) is sequentially screwed to the upper shaft 62, lower shaft 61, and bolt shaft 420 along the outer peripheral surface from the upper end of the holder and is inserted between the upper holder body 41 and the lower holder body 41. It is a configuration consisting of a combination of a cable fixing means (60) made of a lock nut (63) that presses and fixes the cable (70).

Description

{Underground power cable support device}

The present invention relates to a shock absorber for underground electrical distribution cables for building electricity, and more specifically, to a device that compresses and secures cables between upper and lower horizontal plates provided in parallel and spaced at a certain height from a band bracket fixed to the vertical angle of a power outlet. Architectural electrical equipment that ensures that the cable fixing holder is elastically supported by a horizontal plate and a radially provided elastic band, so that even if an external force such as an earthquake is applied to the cable, the external force is buffered and attenuated through the elastic band to always safely support the cable. It relates to an underground distribution cable buffer.

In general, power cables used for underground distribution of buildings are laid using corrugated pipes buried underground in small-scale cases, but if the capacity is large and there are many lines, power cables that are easy to install and manage are used.

In such power outlets, power cables are laid in multiple stages using cable supports installed horizontally on both sides or one wall, and the center or one side of the power outlet is used as a passage for maintenance and repair.

The cable stand is usually installed horizontally at a vertical angle installed on the vertical wall of the power conduit using fastening means such as bolts and nuts, and then the power cable is placed on the cable stand and laid along the power conduit.

Additionally, in order to prevent the power cable placed on the cable stand from being separated from the cable stand, the power cable and the cable stand are simultaneously tied and fixed using a binding band.

However, when vibration energy is frequently transmitted from the cable stand to the power cable, the power cable may be shaken by vibration and the insulation coating may be peeled off or damaged, and when an earthquake occurs, the binding force of the binding band that binds the power cable is loosened. There is a disadvantage that the insulation coating may be damaged due to collisions between power cables due to the movement of power cables.

In the construction underground distribution cable buffer of registered patent number 2505985 (2023.02.28.), the power cable is laid on the cable stand, and then the power cable and the band tension plate are simultaneously wound using a binding band, so that the lifting bracket is connected to the guide pin and the lower part. When it is raised under the guidance of the locking pin, the tension spring is extended and tension is transmitted to the binding band through the upper locking pin and the band tension plate, so that the binding band is maintained in a taut state. Even when the binding band is relaxed, the tension spring is maintained. Since it has elastic restoring force in the direction of contraction, the relaxed binding band is tensioned tightly and the binding force can be maintained continuously.

However, in the prior art, the power cable is always supported on the cable stand by binding with the binding band, so when the power cable moves in the downward direction and receives shock, the power cable continues to be in frequent contact with the cable stand, causing damage to the sheath. In addition to being worn out, tension springs also have the problem of easily losing their elasticity due to corrosion due to contact with moisture.

(Document 1) Registered Patent No. 2505985 (2023.02.28.)

Accordingly, the present invention is intended to solve the above problems, and the present invention has a cable fixing holder separated into the upper and lower sides supported by an elastic band formed radially, thereby preventing shock from external forces due to earthquakes or vibrations from the outside in any direction. The purpose is to provide a shock absorber for underground electrical distribution cables for construction purposes that prevents damage to cables by attenuating and buffering them to prevent collisions and contact between adjacent cables.

In order to achieve the above object, the underground electrical distribution cable buffer device for building construction according to the present invention is fastened with a vertical plate in close contact with a vertical angle fixed to the vertical wall of the power outlet, and the vertical plate is provided from the top and bottom, respectively. A U-shaped band bracket made of a horizontal plate that is bent horizontally; A semicircular holder body that is separated into upper and lower parts to be mutually symmetrical, and both ends of the upper and lower holder bodies are horizontally bent outward, forming a bolt axis at a certain height on the bending surface of the lower holder body, and bending the upper holder body. A coupling extension portion forming a bolt connection hole open to the outside through which the bolt shaft penetrates the surface, a cable fixture protruding outward from both sides of the outer peripheral surface of the holder body on the upper and lower sides, and each holder body A protective pad adhered along the inner circumferential surface and a cushioning pad that is adhered to protrude outward from the cable fixture on both sides of the outer peripheral surface of each holder body to protect it from contact or collision impact with the horizontal plate of the band bracket. A cable fixing holder provided as a member; Each end is fixed to the cable fixture of the upper holder body and the lower holder body of the cable fixing holder, and the other end is fixed to the cable fixture protruding from the horizontal plate of the band bracket corresponding to each cable fixture. An elastic band elastically supporting the upper and lower holder bodies of the cable fixing holder; A thread having the same outer diameter and continuous thread as the bolt axis of the coupling extension portion of the lower holder body is formed on the outer peripheral surface, and a spiral shaft is screwed into the spiral hole from the lower side to the spiral hole formed on the upper surface of the bolt shaft. The lower and upper axes protrude from the bottom surface and are screw-connected to each other, and the lower and upper axes are spaced apart from each other by a contracted elastic band. Cable fixing means consisting of a lock nut that is sequentially screwed to the upper shaft, lower shaft, and bolt shaft along the outer peripheral surface from the upper end of the protruding upper shaft, and presses and secures the cable inserted between the upper holder body and the lower holder body. It should be provided through a combination of.

The coupling extension part to which the bolt axis of the holder body on the lower side of the cable fixing holder is fixedly coupled allows the plate surface including the bolt axis to be hinged to the end of the holder body side and connected by the hinge axis to rotate downward at a certain angle.

The distance between the cable fixing sections formed on both sides of the horizontal plate is made to be farther than the distance between the cable fixing sections formed on both sides of the upper and lower holder body of the cable fixing holder, so that they are formed radially with respect to the cable fixing holder.

In the above-mentioned configuration, the cable is elastically supported by the underground distribution cable buffer for building electricity according to the present invention, so that even if an earthquake or external force is applied to the cable, the external force is cushioned in any direction and damage to the cable's coating is prevented. Make it possible.

Figure 1 is a perspective view illustrating an underground distribution cable buffer for building electricity according to the present invention.
Figure 2 is a front view of a shock absorber for underground electrical distribution cables for building electricity according to the present invention.
Figure 3 is a perspective view illustrating a band bracket of an underground distribution cable buffer for building electricity according to the present invention.
Figure 4 is an exploded perspective view illustrating the cable fixing holder of the underground distribution cable buffer for building electricity according to the present invention.
Figure 5 is a front view showing the connection between the upper holder body and the lower holder body using a cable fixing means in the underground distribution cable buffer for building electricity according to the present invention.
Figure 6 is a front view illustrating a configuration for inserting a cable between the upper holder body and the lower holder body of the underground distribution cable buffer for building electricity according to the present invention.
Figure 7 is an operating state in which the upper holder body and the lower holder body are raised and lowered along the upper axis by rotating the lock nut in the underground distribution cable buffer for building electricity according to the present invention.
Figure 8 is an operating state in which the upper shaft is separated from the lower shaft by rotating the lock nut in the underground distribution cable buffer for building electricity according to the present invention.
Figure 9 is an installation state diagram in which the cable is fixed by the underground distribution cable buffer for building electricity according to the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.

The scope of rights of the present invention should not be construed as limited by the embodiments described in the text.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the embodiments, the same reference numerals are assigned to the same components, and in some cases, descriptions of the same reference numerals are omitted.

Figure 1 is a perspective view illustrating a shock absorber for an underground electric distribution cable for building electricity according to the present invention, and Figure 2 is a front view of a shock absorber for an underground electric distribution cable for building electricity according to the present invention.

As illustrated, the underground electrical distribution cable shock absorber for building electricity according to the present invention is largely composed of a combination of a band bracket (30), a cable fixing holder (40), an elastic band (50), and a cable fixing means (60).

In the underground electrical distribution cable shock absorber for building electricity of the present invention, the band bracket 30 is in close contact with the vertical angle 20 fixed to the vertical wall of the power bulb 10 as shown in FIG. 3 and fastened with bolts and nuts. It is composed of a vertical plate 31 that is fixed and a horizontal plate 32 that is bent horizontally for a certain length outward from the top and bottom of the vertical plate 31.

The band bracket 30 may be formed in the shape of a flat plate, but it is preferable that at least the horizontal plate 32 be formed in a vertical shape, and to reinforce rigidity, the cross section may be L-shaped, T-shaped, or It can also be formed into various other channel shapes.

It is more preferable to install a plurality of band brackets 30 at a certain height spaced apart in a direction perpendicular to the vertical angle 20.

A pair of separable semicircular cable fixing holders 40 are formed between the horizontal plates 32 formed at the upper and lower parts of the band bracket 30, as shown in FIG.

That is, the cable fixing holder 40 includes a semicircular holder body 41 having an inner diameter not smaller than the outer diameter of the cable to be supported, and both ends of the holder body 41 are bent horizontally to form a coupling extension 42. ), and cable fixtures 43 are formed on the semicircular outer peripheral surface so that both ends of the upper part and both ends of the lower part, which are symmetrical thereto, protrude outward.

In addition, the bolt shaft 420 is formed at a certain height on the coupling extension 42 of the lower holder body 41, and the bolt shaft 420 is formed on the coupling extension 42 of the upper holder body 41. A long bolt connection hole 421 is formed on the same vertical line as the bolt axis 420 while being opened outward to a diameter larger than the outer diameter of .

Meanwhile, it is more preferable to attach a protection pad 44 to the inner peripheral surface of the upper and lower holder bodies 41 to prevent the coating of the cable from being damaged by contact with the cable and to increase the fixing force.

In particular, in the middle of the outer peripheral surface of the upper and lower holder bodies 41, there is a buffer member 45 that protrudes outward rather than the end of the cable fixture 43 to absorb and buffer the impact of contact and collision with the horizontal plate 32. It is most desirable to allow it to adhere.

The cable fixing holder 30 is elastically supported by an elastic band 50 having elasticity between the upper and lower horizontal plates 32 of the band bracket 30.

The elastic band 50 is made of the same material as the elastic rope for bungee jumping and has elasticity. This elastic band 50 is connected to the horizontal plate 32 and the upper and lower holder body 41 of the cable fixing holder 40. Each end is fixed to the cable fixtures 33 and 43 formed respectively.

However, the distance between the cable fixtures 33 formed on both sides of the horizontal plate 32 is greater than the distance between the cable fixtures 43 formed on both sides of the upper and lower holder body 41 of the cable anchor holder 40. It is most desirable to provide it radially based on the cable fixing holder 40.

The upper and lower holder bodies 41 of the cable fixing holder 40 are positioned toward the upper horizontal plate 32 and the lower horizontal plate 32, respectively, by the elastic band 50, and the upper and lower parts are spaced apart at a certain height. The side holder body 41 connects the coupling extension parts 42 formed at both ends of each holder body 41 by a cable fixing means 60 as shown in FIG. 5 .

The cable fixing means 60 is composed of a lower shaft 61, an upper shaft 62, and a lock nut 63. The lower shaft 61 and the upper shaft 62 are connected to the lower holder body 41. It is formed to have the same outer diameter as the outer diameter of the bolt shaft 420 formed on the coupling extension portion 42, and a thread having continuity with the thread formed on the bolt shaft 420 is formed on the outer peripheral surface.

In particular, a spiral hole 422 is formed at a certain depth on the upper surface of the lower shaft 61 and the upper shaft 62 along with the bolt shaft 420, and the lower end of the lower shaft 61 and the upper shaft 62 On the surface, the spiral shafts 610 and 620, which are screwed into the spiral holes 422, protrude downward.

The lower shaft 61 and the upper shaft 62 may be formed to have the same length, but may also be formed to have different heights.

Meanwhile, the coupling extension portion 42 to which the bolt shaft 420 of the lower holder body 41 of the cable fixing holder 40 is fixedly coupled has a plate surface including the bolt shaft 420 on the holder body 41 side. It may be hinge-coupled with the end and connected by a hinge axis (not shown) to rotate downward at a certain angle.

The operation and effect of the underground electrical distribution cable buffer for building electricity according to the present invention configured as above will be described in more detail as follows.

The present invention is to ensure that the U-shaped band bracket (30) is firmly fixed to the vertical angle (20) fixed to the power bulb (10), and the upper and lower horizontal plates are formed in parallel and spaced at a certain height from the band bracket (30). (32) It is characterized in that the cable (70) can be firmly fixed by using a cable fixing holder (40) elastically supported by an elastic band (50).

However, the cable fixing holder 40 is formed to be separated into an upper and lower part, so that the upper holder body ( 41) and the lower holder body 41 are spaced apart.

With the upper and lower holder bodies 41 spaced apart, the cable 70 is inserted between the holder bodies 41 from one side so that it is located in the middle of the upper and lower holder bodies 41, or the lower holder body (41) is inserted into the space between the upper and lower holder bodies 41. 41).

With the cable 70 inserted, first, a cable fixing means 60 is installed at the upper end of the bolt shaft 420 so that the lower end is fixed to the coupling extensions 42 formed on both sides of the lower holder body 41. Ensure that the lower shaft (61) is screwed together.

That is, the helical shaft 610, which is formed to protrude from the lower end of the lower shaft 61, is screwed into the helical hole 422 formed on the upper surface of the bolt shaft 420, thereby lowering the bolt shaft 420. The sub shaft 61 is axially connected, and at the top of the lower shaft 61, a bolt connection is made so that the upper part of the upper shaft 62 is formed on the coupling extensions 42 formed on both sides of the upper holder body 41. While being inserted through the hole 421, the upper shaft 62 is positioned on the same vertical line as the lower shaft 61, and the upper shaft 62 is inserted into the spiral hole 611 formed on the upper surface of the lower shaft 61. The helical shaft 62 is screwed so that it is connected to the shaft.

When the upper shaft 62 along with the lower shaft 61 are continuously connected to the bolt shaft 420, the upper end of the upper shaft 62 is connected with a bolt formed on the coupling extension 42 of the upper holder body 41. Since a portion of the hole 421 passes vertically and protrudes upward, a lock nut 63 is screwed to the upper part of the upper shaft 62 as shown in FIG. 6 .

In this state, when the lock nuts 63 on both sides are rotated, the lock nuts 63 gradually move downward from the upper end of the upper shaft 62, and the upper holder body 41 is extended by the lock nuts 63. The portion 42 is pressed downward, and as the lock nut 63 moves downward, not only the upper holder body 41 but also the lower holder body 41 simultaneously moves upward as shown in FIG. 7 .

That is, the lower holder body 41 as well as the upper holder body 41 are elastically supported by the elastic bands 50 on the upper and lower horizontal plates 32, so that the upper holder body 41 moves downward. The lower holder body 41 also moves upward according to the moving height.

By continuously rotating the lock nut 63 and moving it further downward, when the fastening position is at the lower shaft 61 as shown in FIG. 8, the upper shaft 62 provided on the upper part of the lock nut 63 is connected to the lower shaft ( 61), rotate it in the direction of loosening to separate it.

If the upper shaft 62 is not separated, the lower holder body 41 continues to move upward, and the upper end of the upper shaft 62 may come into contact with the upper horizontal plate 32, thereby causing contact with the horizontal plate 32. In order to prevent damage, it is desirable to separate the upper shaft 62 from the lower shaft 61 when the fastening position of the lock nut 63 reaches the lower shaft 61.

When the lock nut 63 moves downward along the lower shaft 61 and the lock nut 63 finally reaches the bolt shaft 420, the lower shaft 61, like the upper shaft 62, also moves to the bolt shaft 420. ) to be separated from the upper part of the.

If the lock nut 63 is continuously rotated in the tightening direction so that the coupling extension 42 of the upper holder body 41 is in close contact with the coupling extension 42 of the lower holder body 41, as shown in FIG. 9 Likewise, the cable 70 is firmly fixed between the upper and lower holder bodies 41.

When the cable 70 is fixed in this way, even if the cable 70 is pushed, pulled, or shaken by an external force such as an external earthquake or vibration, the cable 70 is maintained by the elasticity of the radially connected elastic band 50. Although there may be slight shaking, it can immediately return to its original position, and the shock caused by external force is cushioned while preventing any damage to the outer sheath of the cable 70.

In addition, according to the present invention, even if a plurality of cables 70 are supported laterally, there is a very useful effect of preventing collision between the cables 70 due to an impact applied to the cables 70 by an external force.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations should be considered to fall within the scope of the claims of the present invention.

10: Power sphere
20: vertical angle
30: Band bracket
31: vertical plate 32: horizontal plate
40: Cable fixing holder
41: Holder body 42: Coupling extension part
420: bolt axis 421: bolt connection hole
43: cable fixture 44: protection pad
45: buffer member
50: elastic band
60: Cable fixing means
61: lower shaft 62: upper shaft
63: locknut
70: cable

Claims (3)

A vertical plate 31 is fastened and fastened in close contact with a vertical angle 20 fixed to the vertical wall of the power bulb 10, and a horizontal plate is bent horizontally from the top and bottom of the vertical plate 31, respectively ( A U-shaped band bracket (30) consisting of 32);
A semicircular holder body 41 that is separated into upper and lower sides and is mutually symmetrical, and both ends of the upper and lower holder body 41 are horizontally bent outward and bolts are placed at a certain height on the bent surface of the lower holder body 41. A coupling extension 42 forming the shaft 420 and forming a bolt connection hole 421 on the bent surface of the upper holder body 41 so that the bolt shaft 420 penetrates and opens to the outside. , a cable fixture 43 formed to protrude outward from both sides of the outer circumferential surface of the holder body 41 on the upper and lower sides, a protection pad 44 adhered along the inner circumferential surface of each holder body 41, and each holder body 41. ) on the outer circumferential surface between the cable fixtures 43 on both sides so as to protrude outwardly from the cable fixture 43 so as to be protected from contact or collision impact with the horizontal plate 32 of the band bracket 30. A cable fixing holder (40) provided as a buffer member (45);
Each end is fixed to the cable fixture 43 of the upper holder body 41 and the lower holder body 41 of the cable fixing holder 40, and the other end is the band bracket corresponding to each cable fixture 43. It elastically supports the upper holder body 41 and the lower holder body 41 of the cable fixing holder 40 by being fixed to the cable fixture 33 protruding from the horizontal plate 32 of (30). elastic band (50);
A thread having the same outer diameter and continuous thread as the bolt shaft 420 of the coupling extension portion 42 on both ends of the lower holder body 41 is formed on the outer peripheral surface, and a spiral hole is formed on the upper surface of the bolt shaft 420. In (422), the spiral shafts 610 and 620, which are screwed into the spiral hole 422 from the bottom surface, are formed to protrude from the bottom surface and are screwed together, and the lower shaft 61 and the upper shaft 62 and the contracted The upper shaft 62 protrudes upward through the bolt connection hole 421 formed in the coupling extension 42 of the upper holder body 41, which is formed to be spaced apart from the lower and upper parts by the elastic band 50. ) is sequentially screwed to the upper shaft 62, lower shaft 61, and bolt shaft 420 along the outer peripheral surface from the upper end of the holder and is inserted between the upper holder body 41 and the lower holder body 41. Cable fixing means (60) consisting of a lock nut (63) that presses and fixes the cable (70);
It consists of
So that the distance between the cable fixtures 33 formed on both sides of the horizontal plate 32 is greater than the distance between the cable fixtures 33 formed on both sides of the upper and lower holder body 41 of the cable fixing holder 40. An underground electrical distribution cable buffer for building electricity that is formed radially based on the cable fixing holder (40).
In claim 1,
The coupling extension portion 42 to which the bolt shaft 420 of the lower holder body 41 of the cable fixing holder 40 is fixedly coupled has a plate surface including the bolt shaft 420 at an end on the holder body 41 side. A shock absorber for building electric underground distribution cables that is hinged and connected by a hinge shaft to rotate downward at a certain angle.
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