KR101746130B1 - Cable tray - Google Patents

Abstract

More particularly, the present invention relates to a cable tray, and more particularly, to a cable tray manufactured using a full hard steel plate, which can be manufactured using a thin steel plate having a thickness of less than half the thickness of a cold rolled steel sheet annealed at a thickness of 0.8 to 1.2 mm It has a high strength and hardness, it supports the load of heavy cable, and the weight of the steel plate is light, which makes it easy to manufacture and install, which reduces labor costs.

Description

Cable tray {CABLE TRAY}

The present invention relates to a cable tray, and more particularly, to a cable tray manufactured using a full hard steel plate, so that the thickness of the steel sheet can be made thinner than half of the thickness of the steel sheet used for manufacturing the conventional cable tray This makes it possible to manufacture cable trays with a very low manufacturing cost, light weight and high durability.

In general, large and small diameter cables are arranged along the ceiling and floor or wall for supply of power supply or fluid to the factory, ship and offshore structure, In order not to give it, the cable tray is used to support and fix it.

Such a cable tray is composed of an iron plate so as to extend in the form of a long water channel by welding or assembling a plurality of rungs at predetermined intervals so that the side rails facing each other are positioned on both sides and the cable is seated therebetween.

The steel plate used in the conventional cable tray is manufactured by extruding a steel sheet and proceeding in the order of pickling process - cold rolling process - clean process - annealing process - rough rolling process - correcting process. When the annealing process is performed, The strength and hardness are decreased, so that the thickness of the steel sheet should be made relatively thick between 1.6 and 3.2 mm during manufacture so that the strength and hardness are maintained.

Therefore, the conventional cable tray has a problem in that the thickness of the steel plate becomes thick, so that the manufacturing cost is very high and the weight is heavy, so that it is difficult to manufacture and install the cable tray and the labor cost increases accordingly.

1. Registration Utility Model Publication No. 20-0468510.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a cable tray using a full hard steel plate to reduce the thickness of the steel sheet to less than half the thickness of the cold- It can be manufactured by using steel plate, so it is possible to reduce the manufacturing cost, secure processability and corrosion resistance, and has strong strength and hardness, which supports the load of heavy cable. The weight of steel plate is light, Cable tray.

The problems to be solved by the present invention are not limited to the above-mentioned problems. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention.

In order to achieve the above object, the present invention provides a method for producing a cold-rolled steel sheet, which comprises extruding a hot-rolled steel sheet, subjecting it to a pickling process, a cold rolling process and a zinc- Cable tray is made of full hard steel sheet with steel reinforcement and thickness of 0.8 ~ 1.2mm.

The present invention can manufacture a cable tray using a full hard steel plate, which can be manufactured using a thin steel plate having a thickness of less than half the thickness of the cold-rolled steel sheet annealed at a thickness of 0.8 to 1.2 mm, thereby significantly reducing the manufacturing cost and securing workability and corrosion resistance And it has strong strength and hardness, it supports the load of the heavy cable well, and the weight of the steel plate is light, which makes it easy to manufacture and install, which reduces labor costs.

1 is a perspective view of an embodiment of the present invention.
Fig. 2 is an exploded perspective view of Fig.
Figure 3 is a plan view of Figure 1
4 is a cross-sectional view taken along the line II-
5 is a cross-sectional view taken along the line II-II '
6 is a top view of a corner cable tray of the present invention
7 is a top view of the T-shaped cable tray of the present invention
8 is a cross-sectional view taken along the line "

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

In the drawings, the same components are denoted by the same reference numerals throughout the drawings, and detailed descriptions of well-known functions or known configurations that may unnecessarily obscure the gist of the present invention are omitted.

The cold-rolled steel sheet is produced by extruding a hot-rolled steel sheet and sequentially performing a pickling process, a cold rolling process, a clean process, an annealing process, a rough rolling process, and a correcting process. In the present invention, an iron plate before being subjected to the annealing process, that is, a full hard steel sheet (hereinafter, referred to as a "Full Hard Steel Sheet") produced by extruding a hot rolled steel sheet and proceeding sequentially from a pickling process to a cold rolling process to a clean process, To fabricate a cable tray.

Full Hard Steel Sheet goes through cold rolling process which is not annealed, extrudes iron sheet produced, ie, hot rolled steel sheet, treating impurities with hydrochloric acid (pickling process) It is an iron plate which is machined to 0.8 ~ 1.2mm and then the rolling flux is removed and galvanized steel plate has high strength and hardness. That is, since the full hard steel sheet is not subjected to the annealing process with a low carbon steel material, the steel sheet has a thickness of 0.8 to 1.2 mm (especially 0.8, 1.0, and 1.2 mm), it can be manufactured with a thickness less than half that of 1.6 ~ 3.2mm (especially 1.6, 2.0, 2.3, 3.2mm) which is thickness of the cold rolled steel sheet annealed with the thickness Is secured and is thin, but its strength and hardness are high, so that the load of a heavy cable can be supported well.

turn Product Name thickness standard Length Weight (kg) One Full hard steel plate 1.0 mm 600X100mm 3000mm 8.94 2 Plain steel plate 1.6mm 600X100mm 3000mm 15.45 3 Plain steel plate 2.0mm 600X100mm 3000mm 18.54 4 Plain steel plate 2.3mm 600X100mm 3000mm 21.32 5 Plain steel plate 3.2mm 600X100mm 3000mm 30.91

Therefore, referring to Table 1, the present invention can produce a cable tray using a full hard steel plate having a thickness of 0.8 to 1.2 mm, thereby significantly reducing the manufacturing cost and lightening the weight of the product, The work time can be shortened and the labor cost can be reduced.

turn Product Name thickness The tensile strength yield point Elongation One Full hard steel plate 1.0 mm 990-929 N / mm2 936-877 N / mm < 2 > 3.1% 2 Plain steel plate 1.6 to 3.2 mm 430-460 N / mm2 354-320 N / mm2 31-29%

Further, referring to Table 2, the full hard steel sheet used in the production of the cable tray of the present invention is 2 to 3 times stronger than the cold rolled steel sheet having the tensile strength and hardness annealed, and has excellent durability, Even if it is thinned less than half, the load of the cable is supported well and the thickness is thin, so the workability is ensured.

In the meantime, according to the present invention, a cable tray is manufactured using the full hard steel plate. The cable tray according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

The cable tray according to the embodiment of the present invention includes a side rail 10 and a rung 20 manufactured using the full hard steel plate.

The side rails 10 are formed by bending the full hard steel plates having a predetermined width and length in a side-by-side shape with their both end portions in the width direction inwardly, The coupling holes 11 are formed at regular intervals. The pair of side rails 10 are installed side by side so as to face each other with a predetermined distance left and right. At this time, the thickness of the side rail may be 1.0 or 1.2 mm.

'형상이 되게하여 렁(20) 위에 놓여지는 케이블의 피복 손상을 방지하고 케이블의 하중을 보다 잘 지탱할 수 있게 된다. 즉, 렁(20)의 폭방향의 양단부가 하측으로 빗면을 이루도록 경사져있기 때문에 그 위에 놓여지는 케이블 피복이 손상되는 것을 방지할 수 있게 된다. 아울러, 렁(20)의 두께는 0.8mm 로 제작할 수 있다.The rung 20 is formed by cutting the full hard steel plate having a predetermined width and length such that both end portions in the width direction are inwardly folded side by side to form a cross section in the shape of " A coupling hole 21 is formed at a position corresponding to the coupling hole 11 of the side rail 10 and is coupled to both side rails 10. At this time, the rungs 20 are bent inwardly so that both end portions in the width direction are inwardly facing each other at 95 to 105 angles (particularly, 100 degrees)

'To prevent damage to the cable covering the rung 20 and to better support the load on the cable. In other words, since both end portions in the width direction of the rungs 20 are inclined downward to form an oblique surface, it is possible to prevent the cable covering thereon from being damaged. In addition, the thickness of the rungs 20 can be made 0.8 mm.

The length A in the width direction of the center face of the rung 20 is 38 to 42 mm (especially 40 mm), thereby preventing the side rail 10 from twisting in the longitudinal direction and supporting the weight of the cable better .

The rungs 20 are vertically coupled to the side rails 10 so as to connect and support the side rails 10 and the connecting holes 11 of the side rails 10 and the rungs 20 Through the rivet 30 to be coupled. The side rails 10 and the rungs 20 are combined by using the rivets 30, thereby facilitating assembly and installation work. In addition, the rungs 20 are installed at regular intervals in the longitudinal direction of the side rails 10.

A pair of coupling holes 11 are formed at both ends of the side rail 10 and a pair of connection holes 21 of a rung 20 connected to both ends of the side rail 10 are formed. It is possible to prevent the side rails 10 from being twisted in the longitudinal direction by connecting the rivets 30 to the rungs 20 connected to both ends of the side rails 10 by a pair.

Accordingly, the cable tray according to the embodiment of the present invention can be manufactured by using a thin steel plate having a thickness of less than half of the thickness of the cold-rolled steel sheet annealed at a thickness of 0.8 to 1.2 mm by making the side rail and the runway using the full- It has a high strength and hardness, it supports the load of heavy cable, and the weight of the steel plate is light, which makes it easy to manufacture and install, which reduces labor costs.

6, the corner portion cable tray includes a corner side rail 10a and a rung 20. The corner portion cable tray connects the above straight portion cable tray at a right angle.

The corner side rail 10a is formed so as to bend the side rail in an arc shape. Then, a pair of corner side rails 10a are connected to each other through a rung 20 by means of a rivet 30.

Referring to FIGS. 7 and 8, the T-type cable tray includes a side rail 10, a corner side rail 10a, a rung 20, and a rack base 40. As shown in FIG. The T-type cable tray connects the straight cable tray to the T-shape.

'형으로 형성한 렁받침대(40)를 개입하여 렁받침대(40)의 일단에는 렁(20)의 일단을 리벳(30)을 이용하여 결합하고 렁받침대(40)의 타단에는 코너사이드레일(10a)을 리벳(30)을 이용하여 결합하게 된다. 그리하여, T형 케이블 트레이는 '

'형태로 설치할 수 있게 된다.The T-shaped cable tray is provided with the side rails 10 on one side and the corner side rails 10a on the other side so as to face each other, and the rung 20 is interposed. At this time, in order to connect the rung 20 and the corner side rail 10a,

One end of the rung 20 is connected to one end of the rung pedestal 40 by using the rivet 30 and the other end of the rung pedestal 40 is connected to the corner side rail 10a Are connected to each other by using the rivets 30. Thus, the T-

'.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: Side rail 10a: Corner side rail
20: Rung 30: Rivet
40: rung base

Claims (6)

delete In the cable tray,
The cable tray includes:
In the production of cold-rolled steel sheet, the hot-rolled steel sheet is extruded, pickling process - cold rolling process - galvanized after the cleaning process to strengthen the tensile strength and hardness by 2 to 3 times and annealed steel sheet thickness to 0.8 to 1.2 mm The full hard steel sheet is used to bend the both end portions in the width direction of the full hard steel sheet inwardly so as to have a cross section in the shape of a " C " shape and to form the engagement holes 11 at regular intervals along the bent portions A pair of side rails 10,
The full hard steel plate is used to bend the both ends in the width direction of the full hard steel plate inwardly so as to have a "C" shape in cross section and to correspond to the engagement holes 11 of the side rails 10 at both ends in the longitudinal direction A rung 20 formed between the side rails 10 to form a connection hole 21,
And a rivet (30) fitted to the coupling hole (11) of the side rail (10) and the connecting hole (21) of the rung (20) and coupling the side rail (10) and the rung (20). The method of claim 2,
The rung 20 is formed by bending a bent portion 22 once more at an angle of 95 to 105 inward in the width direction,

'To prevent damage to the sheath of the cable.
The method of claim 3,
Wherein the length of the center plane of the rung (20) is 38 to 42 mm so as to prevent the side rail (10) from twisting in the longitudinal direction and to better support the weight of the cable.
The method of claim 4,
Wherein a pair of rivets (30) are coupled to a rung (20) coupled to both ends of the side rail (10) to prevent the side rail (10) from twisting in the longitudinal direction.
A straight cable tray according to claim 5,
A pair of corner side rails 10a formed so as to bend the side rails 10 in an arc in order to connect the rectilinear cable trays at right angles and a rung 20 interposed between the corner side rails 10a A corner cable tray,
A side rail 10 is provided at one side and a corner side rail 10a is provided at the other side so as to face each other to connect the rectilinear cable tray to the T shape. The rung 20 is connected to the corner 20, In order to connect the side rails 10a,

Type cable tray (not shown) having one end of the rung 20 connected to one end of the rung support 40 and a corner side rail 10a connected to the other end of the rung pedestal 40 through a rung- .

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