KR20160000514A - Cable tray - Google Patents

Abstract

A cable tray is disclosed. The cable tray according to an embodiment of the present invention comprises: side rails formed on both sides; and a rung which connects the side rails and allows a cable to be placed thereon. Each of the side rails comprises: a bottom plate part which is bent in a square C-shape in a point adjacent to the rung; a vertical connection part which is extended from the end of the bottom plate part in a direction in a certain length; and a top plate part which is extended from the vertical connection part. The rung is arranged to come in contact with the bottom plate part. Therefore, the present invention effectively supports the load of cables.

Description

Cable tray {CABLE TRAY}

The present invention relates to a cable tray.

Cable trays used in ships and offshore structures are typically installed on the ceiling or on the wall of the structure for cable laying and protection. Cable trays can be made of stainless steel, stainless steel and duplex stainless steel. They consist of a side rail on each side and a rung on which the cable is placed. For example, U.S. Patent Publication No. 2013/0264433 (published Oct. 10, 2013) (hereafter referred to as prior art) discloses a technique relating to a cable tray including an 'I' shaped side rail.

Here, the total height of the side rails is usually 100 to 150 mm. However, when the side rails are manufactured to have a length of 100 mm or less due to the space inside the ship, it is difficult to effectively support the cable loads in the above-described prior art and conventional side rail shapes. This can cause the rungs and side rails to flex by cable loads, which can damage the structure and affect safety.

Therefore, when the amount of cables to be mounted on the cable tray is large, it is necessary to increase the thickness of the side rails and the rungs in order to support the load. This can lead to increased production costs and increased ship loading.

U.S. Published Patent Application No. 2013/0264433 (published October 10, 2013)

An embodiment of the present invention seeks to provide a cable tray capable of effectively supporting a cable load.

’자 형상으로 절곡된 하판부와, 상기 하판부의 끝단으로부터 일방향으로 일정 길이 연장 형성된 수직연결부와, 상기 수직연결부로부터 연장 형성된 상판부를 포함하고, 상기 렁은 상기 하판부에 접하도록 배치되는 케이블 트레이가 제공될 수 있다.According to one aspect of the present invention, side rails on both sides; And a rung which connects between the side rails and on which an upper cable is mounted,

A vertical connection portion formed by extending a predetermined length in one direction from an end of the lower plate portion; and a top plate portion extending from the vertical connection portion, wherein the rung is disposed in contact with the lower plate portion, Can be provided.

Wherein the rung includes a horizontal support portion on which a cable is mounted at an upper end thereof and an inclined support portion that extends obliquely downwardly from both sides of the horizontal support portion so as to increase in width, wherein a lower end portion of the inclined support portion is formed to be curled inward, So that the rung is fixed to the vertical connection portion in such a manner that the bolt coupled to the coupling hole formed in the upper portion is inserted into the inner region of the curled portion.

The vertical width of the lower plate portion may be greater than the vertical width of the upper plate portion, and the height of the vertical connection portion may be greater than the vertical width of the lower plate portion.

The upper plate portion may include a first width formed by bending a portion extending from the vertical connection portion to one side and a second width extending from the first width and facing the first width.

The first width of the upper plate portion may be equal to the width of the lower plate portion.

The lower plate portion, the vertical connection portion, and the upper plate portion may be integrally formed.

The cable tray according to the embodiment of the present invention can effectively support the cable load.

Further, the total cross-sectional area of the side rails is increased through the bent shape of the upper plate portion and the lower plate portion, and the direction in which the upper plate portion and the lower plate portion are bent is formed in the same direction, so that the cable load placed on the rung can be distributed and supported more effectively.

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

1 is a perspective view of a cable tray according to an embodiment of the present invention.
2 is a perspective view of a side rail of the cable tray shown in Fig.
3 is a perspective view of a rung of the cable tray shown in FIG.
Fig. 4 is an exploded perspective view showing a combination of a rung and a side rail shown in Fig. 1 using a bolt.
Fig. 5 is a perspective view showing another example of the rung shown in Fig.
6 is a perspective view of a cable tray according to another embodiment of the present invention.
7 is a perspective view of the side rail of the cable tray shown in Fig.
Fig. 8 is an exploded perspective view showing a combination of a rung and a side rail shown in Fig. 6 using a bolt.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

Referring to FIGS. 1 and 2, a cable tray 10 according to an embodiment of the present invention includes side rails 20 and rungs 30 on both sides.

’자 형상으로 절곡된 하판부(21)와, 하판부(21) 상측의 끝단으로부터 위쪽으로 일정 길이 연장 형성된 수직연결부(22)와, 수직연결부(22)의 끝단으로부터 내측방향으로 연장되어 제1너비(L1)를 형성하고, 끝단이 수직연결부(22)의 내측면을 향하도록 하방으로 절곡되어 제2너비(L2)를 형성하는 상판부(23)를 포함한다. 이러한 사이드레일(20)은 일체형으로 성형 제작된다. 여기서, 상판부(23)의 제1너비(L1)는 하판부(21)의 평면 즉, 상하측 평판(21a,22b) 각각의 너비(L3)과 동일하게 제작될 수 있다. 또 하판부(21)의 세로폭(H1)은 상판부(23)의 세로폭(H2)보다 크게 형성되고, 수직연결부(22)의 높이(H3)는 하판부(21)의 세로폭(H1)보다 크게 형성된다.The side rails 20 are arranged in the inner direction in which the rungs 30 are located,

A vertical connection part 22 formed by extending a predetermined length upward from the upper end of the lower plate part 21 and a second connection part 22 extending inward from the end of the vertical connection part 22, And an upper plate portion 23 forming a width L1 and bent downward so that an end thereof faces an inner surface of the vertical connection portion 22 to form a second width L2. The side rails 20 are integrally formed and formed. The first width L1 of the upper plate 23 may be equal to the width L3 of the lower plate 21, that is, the upper and lower flat plates 21a and 22b, respectively. The vertical width H1 of the lower plate portion 21 is greater than the vertical width H2 of the upper plate portion 23 and the height H3 of the vertical connection portion 22 is greater than the vertical width H1 of the lower plate portion 21. [ .

’자 형상으로 마련된다. 렁(30)은 이러한 하판부(21)의 상단 즉, 상측 평판(21a) 위에 양측이 걸쳐져 고정된다. 종래에는 사이드레일에 고정되는 렁에 체결 불량이 발생할 경우, 렁 상단에 적치된 케이블 하중으로 인해 케이블 트레이가 파단되어 사고 발생의 위험이 상존했다. 그러나, 본 발명의 일 실시 예를 통해 렁(30)을 ‘

’자 형상으로 절곡된 하판부(21)의 상측 평판(21a) 위에 양측이 걸쳐지도록 배치시킴으로써 케이블 하중을 효율적으로 지지해줄 뿐만 아니라, 렁에 체결 불량이 발생할 경우에도 케이블 하중을 지지하여 케이블 트레이(10)의 전체적인 안정성을 높일 수 있다.The lower plate portion 21 includes an upper plate 21a, a lower plate 22b and a vertical plate 21c connecting one side of the lower plate 21a and the lower plate 22b,

Quot; The rungs 30 are fixed on both sides of the upper end of the lower plate 21, that is, the upper plate 21a. In the past, when a fastening failure occurred on a rung fixed to a side rail, there was a risk of an accident due to a breakage of the cable tray due to the cable load placed on the rung top. However, according to the embodiment of the present invention,

The cable load is efficiently supported by arranging both sides of the upper plate 21a of the lower plate 21 bent in a " shape " so that the cable load is efficiently supported. 10 can be increased.

The vertical connection part 22 is extended from the upper end of the lower plate part 21 upward by a predetermined length, and is connected to the upper plate part 23. The height H3 of the vertical connection portion 22 is formed to be larger than the vertical width H1 of the lower plate portion 21. [ Both ends of the rung 30 are joined to the lower inner side surface of the vertical connection portion 22 by bolts 40 (see Fig. 4) to be described later. For this purpose, the vertical connection 22 forms a through hole H for the bolt 40 connection.

The upper plate 23 may be formed to have a curved shape at each corner portion to be bent, and may have a folded shape by being bent at an end thereof toward the inner side of the vertical connection portion 22. [ With this configuration, it is possible to protect the operator and the pedestrian from the pointed portion of the top plate 23.

The first width L1 is formed to extend inward from the end of the vertical connection part 22 and is bent downward so that the end of the first width L2 is directed toward the inner side of the vertical connection part 22, The entire cross-sectional area of the side rail 20 can be increased to increase the range of the cable (not shown) load that can be sustained.

In addition, the direction in which the upper plate portion 23 and the lower plate portion 21 are bent can be formed in the same direction, so that the accumulated cable loads accumulated on the rungs 30 can be distributed and supported more effectively.

Even if the cable tray 10 is manufactured to have a length of 100 mm or less due to the space inside the ship, the entire cross-sectional area of the side rail 20 is divided into the upper plate portion 23 and the lower plate portion 21, And the direction in which the upper plate 23 and the lower plate 21 are bent is formed in the same direction so that the cable load placed on the rung 30 can be more effectively dispersed and supported.

’자 형상으로 절곡된 하판부(21)의 상측 평판(21a) 위에 양측이 걸쳐지도록 배치시킴으로써, 케이블 하중을 효과적으로 지지하고 파단될 가능성을 낮추어 안정성을 높일 수 있다.As shown in FIGS. 3 and 4, the rungs 30 connect between the side rails 20, and a cable is mounted on the upper side. The rungs 30 are connected at both ends to the inner side surface of the vertical connection portion 22 in a state where both sides of the rung 30 are spread over the upper flat plate 21a. As described above,

By arranging both sides of the upper plate 21a of the lower plate 21 bent in a " shape " to effectively support the cable load and reduce the possibility of breakage, the stability can be improved.

The rung 30 includes a horizontal support portion 31 on which an upper cable is mounted and an inclined support portion 32 extending obliquely downward from both sides of the horizontal support portion 31 so as to increase in width. The cable can be stably supported by forming the inclined support portions 32 inclined downward from both sides of the horizontal support portion 31. [

The lower end of the inclined support portion 32 is formed to be curled inward and inserted into the inner region of the curved portion 32a of the bolt 40 coupled to the coupling hole H formed in the vertical connection portion 22, (30) is fixed to the vertical connection portion (22). With this simplified bolt (40) fastening method, the number of production and production process can be reduced and the product cost can be lowered.

5, the rung 30 described above includes a horizontal support portion 31 on which a cable is mounted at an upper end thereof, an inclined support portion 31 extending obliquely downward from both sides of the horizontal support portion 31 so as to increase in width, (32), and the lower end of the inclined support portion (32) may be provided in a vertically extending shape. The rungs 30 of this type can be welded at both ends to the inner side surface of the vertical connection portion 22 in a state where both sides of the rung 30 are covered with the upper end of the lower plate portion 21. [

6 to 8, the side rail 20 according to another embodiment of the present invention includes a lower plate portion 21 bent in a 'C' shape inwardly in which a rung 30 is located, A vertical connection part 22 formed by extending a predetermined length upward from the upper end of the lower plate part 21 and a first width L1 extending outward from the end of the vertical connection part 22, And an upper plate 23 bent downward to face the outer surface of the upper plate 22 to form a second width L2. The side rails 20 are integrally formed and formed. The first width L1 of the upper plate 23 may be equal to the width L3 of the lower plate 21, that is, the upper and lower flat plates 21a and 22b, respectively. The vertical width H1 of the lower plate portion 21 is greater than the vertical width H2 of the upper plate portion 23 and the height H3 of the vertical connection portion 22 is greater than the vertical width H1 of the lower plate portion 21. [ Can be formed larger.

The lower plate portion 21 is provided in a "C" shape comprising an upper plate 21a, a lower plate 22b and a vertical plate 21c connecting one side of the lower plate 21a and the lower plate 22b. At this time, both sides of the rung 30 are supported by the lower plate 22b in a state of being inserted into the open area of the lower plate 21, and the vertical sides of the lower plate 21, The ends are fixed.

The lower plate portion 21 is formed in a curved shape so that the entire cross-sectional area and length of the side rail 20 are increased. This increases the stress caused by the sagging of the rung 30 when the cable is stacked on the rung 30 So that it can be supported effectively.

The vertical connection part 22 is extended from the upper end of the lower plate part 21 upward by a predetermined length, and is connected to the upper plate part 23. The height H3 of the vertical connection portion 22 is formed to be larger than the vertical width H1 of the lower plate portion 21. [

The upper plate 23 may be formed to have a curved shape at each corner portion to be bent, and the upper plate 23 may be folded so that its end is bent toward the outer side of the vertical connection portion 22. With this configuration, it is possible to protect the operator and the pedestrian from the pointed portion of the top plate 23.

A first width L1 is formed to extend outwardly from an end of the vertical connection part 22 and is bent downward so that an end thereof faces an outer surface of the vertical connection part 22 to form a second width L2 The entire cross-sectional area of the side rail 20 can be increased to increase the range of the cable (not shown) load that can be sustained.

In addition, the direction in which the upper plate portion 23 and the lower plate portion 21 are bent can be formed in the same direction, so that the accumulated cable loads accumulated on the rungs 30 can be distributed and supported more effectively.

In this way, even when the cable tray 10 is manufactured to a length of 100 mm or less due to the space inside the ship, the entire cross-sectional area of the side rail 20 is divided into the upper plate portion 23 and the lower plate portion 21, And the direction in which the upper plate 23 and the lower plate 21 are bent is formed in the same direction so that the cable load placed on the rung 30 can be more effectively dispersed and supported.

The rungs 30 connect between the side rails 20 as shown in Figs. 3, 7, and 8, and a cable is mounted on the upper side. The rung 30 includes a horizontal support portion 31 on which an upper cable is mounted and an inclined support portion 32 extending obliquely downward from both sides of the horizontal support portion 31 so as to increase in width. The cable can be stably supported by forming the inclined support portions 32 inclined downward from both sides of the horizontal support portion 31. [

The lower end of the inclined support portion 32 is formed so as to be curled inward and the bolt 40 coupled to the vertical surface of the lower plate 21, that is, the engagement hole H formed to penetrate the vertical plate 21c, The rung 30 is fixed to the lower plate portion 21 in such a manner that the rung 30 is inserted into the inner region of the lower plate portion 32a. With this simplified bolt (40) fastening method, the number of production and production process can be reduced and the product cost can be lowered.

Table 1 shows experimental results of the cable tray including the conventional 'I' shaped side rail and the cable tray according to the embodiment of the present invention. At this time, structural analysis was conducted based on NEMA (National Electrical Manufacturers Association) standard, and the cable tray was made of stainless steel such as LDSS (Lean Duplex Stainless Steel).

[Table 1]

The maximum stress applied to both ends of the side rail 20 of the cable tray 10 according to the embodiment of the present invention is 77 MPa (the present invention) at 91 MPa (conventional) Which is about 21% smaller than the conventional one. This indicates that the cable load is effectively dispersed and supported by the cable tray 10 of the present invention.

It can be confirmed that the deflection of the rung 30 is improved by about 17% or more from 2.6 mm (conventional) to 2.4 mm (present invention).

As such, since the cable tray 10 according to the embodiment of the present invention can efficiently support the cable load even when the height of the side rail 20 is made lower than the normal height, the space inside the ship is insufficient The installation of the cable tray 10 and the cable laying through the cable tray 10 can be effectively performed.

The foregoing has shown and described specific embodiments. However, it is to be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the scope of the technical idea of the present invention described in the following claims It will be possible.

10: Cable tray 20: Side rail
21: lower plate portion 22: vertical connection portion
23: top plate 30: rung
40: Bolt

Claims (6)

Side rails on both sides; And
And a rung connecting the side rails and having a cable mounted thereon,
The side-
At a location adjacent to the rung,

A lower plate portion bent in a "
A vertical connection part formed by extending a predetermined length in one direction from an end of the lower plate part,
And a top plate portion extending from the vertical connection portion,
And the rung is disposed in contact with the lower plate portion. The method according to claim 1,
The rung includes a horizontal support portion on which a cable is mounted at an upper end thereof and an inclined support portion which is inclinedly extended downward from both sides of the horizontal support portion so as to increase in width,
Wherein the lower end of the inclined portion is formed to be curled inward and the bolt coupled to the coupling hole formed in the vertical coupling portion is inserted into the inner region of the curled portion to fix the rung to the vertical connection portion. The method according to claim 1,
The vertical width of the lower plate portion is formed larger than the vertical width of the upper plate portion,
And the height of the vertical connection portion is larger than the vertical width of the lower plate portion. The method according to claim 1,
The upper plate portion,
A first width formed by bending a portion extending from the vertical connection portion to one side,
And a second width extending from the first width and facing the first width. 5. The method of claim 4,
Wherein the first width of the upper plate portion is equal to the width of the lower plate portion. The method according to claim 1,
Wherein the lower plate portion, the vertical connection portion, and the upper plate portion are integrally formed.

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