KR20160116163A - Cable tray - Google Patents

Abstract

The present invention relates to a cable tray capable of improving the efficiency of the whole process including assembly installation of the cable tray and installation of a cable and enhancing the manufacturing efficiency of each component of the cable tray by minimizing the number of cable trays. The cable tray includes: a side rail which has connection holes at both ends thereof; a first connection member which includes a connection plate including a connection slot for connecting the side rail by protruding from the outer surface of the side rail after being inserted into the connection hole and a ground plate attached to the outer surface of the connection plate for connecting the side rail; and a second connection member which includes a connection pin inserted into the connection slot of the first connection member and fixing the side rail and the first connection member. A rung for combining a side rail with another side rail includes: a rung combination pin which is formed by bending a part of a meal plate forming the top surface; and a first rivet hole which is formed at the end of the bottom surface of the rung. The side rail includes: a rung combination slot in the lower part inside; and a second rivet hole formed on the bottom surface of the side rail. When the cable tray is bent in one direction, a roller shaft insertion hole formed by punching and a roller including a roller shaft to be inserted into the roller shaft insertion hole are placed inside the side rail of the cable tray.

Description

Cable tray {CABLE TRAY}

Provided is a cable tray that minimizes the number of members of a cable tray and simplifies the assembly of the member, thereby increasing the efficiency of work in assembling and installing the cable tray and preventing a safety accident The purpose.

Most cable trays are installed in the form of hanging from the ceiling of a building frame, so it is often necessary to work at a high level to install or assemble cable trays. Therefore, workers must work in uncomfortable and hazardous environments, which reduces operating efficiency and exposes workers to safety accidents.

2 is an exploded perspective view showing the grounding between the side rails according to the related art.

As shown in FIG. 2, a separate ground wire 11 is conventionally connected to the side rail 10 by a bolt 12 for grounding between the side rails 10. In addition to the additional members required for grounding, additional work has to be done after installation of the side rails 10, thus hindering the overall process efficiency of cable tray installation.

In addition, when the cable tray is installed in a vertically or horizontally bent structure, the operator pulls the cable from one side to install the cable, the cable is caught in the cable tray inside the cable tray, Sometimes they leave.

There have been a number of proposals for solving the above problem, and in order to facilitate the connection between the side rails of the cable tray, the 'side rail connecting apparatus of cable tray' of the patent registration 10-1182635 has been proposed.

However, compared with the conventional welding method or the bolt and nut coupling method, the coupling force between the members is weak or the coupling between the members is improved, but the conventional welding method or the bolt and nut coupling method is applied to other parts of the cable tray And the process of assembling and installing cable trays as well as laying cables on installed cable trays has not been considered. And the existing proposals attempted to improve the assembling efficiency of the cable trays and did not consider the efficiency of manufacturing each member.

Therefore, there is no proposal considering efficiency of fabrication of each member of the cable tray, while improving the efficiency of the entire process of assembly and installation of cable trays and cable installation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cable tray that minimizes the number of members of a cable tray and simplifies assembly of members, thereby increasing work efficiency in assembling and installing cable trays and preventing safety accidents.

It is another object of the present invention to provide a cable tray that prevents cable from being caught in a cable tray or detached from a cable tray when assembling and installing a cable tray.

It is still another object of the present invention to provide a cable tray with low cost and high efficiency by minimizing the number of members in a cable tray member and increasing manufacturing efficiency by minimizing the processing of a galvanized gold plate as a raw material .

One side of the cable tray according to an embodiment of the present invention includes at least one connection hole formed at both side end portions of the side rail to connect the side rails in the longitudinal direction, And a connection pin inserted into the connection slot of the first connection member and fixing the side rail and the first connection member to the first connection member, wherein the first connection member includes a connection plate having a connection slot for connecting the side rail, And a second connecting member including the second connecting member.

Further, a ground plate for energizing the side rails is attached to the outer side surface of the connecting plate of the first connecting member, so that there is no need to provide a separate ground line.

The first connection member is provided with a connection groove formed by cutting a central portion of the lower end of the connection slot, and a connection protrusion coupled with the connection groove in the second connection member. Therefore, when the first and second connecting members are assembled by the connecting slot and the connecting pin while the side rails are interposed, the coupling force between the members is maintained by only two connecting members without the welding method or the bolt and nut connecting method It is also possible to prevent dropouts of members.

 In addition, since the connection hole and the connection groove can be formed through one punching process, and the connection slot and the connection protrusion can be formed through one pressing process, the efficiency in manufacturing the member can be increased.

The other side of the cable tray according to the embodiment of the present invention includes a rung coupling pin formed by bending a part of a metal plate that forms a rung at an end of a rung in a rung that parallelly connects side rails with a certain interval. And a second rivet hole formed in a lower end surface of the side rail, wherein the first rivet hole is formed at a lower end of the lower rail.

Therefore, if the rivet is inserted and coupled to the first rivet ball and the second rivet ball by using the rivet gun after the rung coupling pin is inserted into the rung coupling slot, the side rails are coupled to each other without welding, . This method guarantees the bonding force such as the welding method or the bolt and nut coupling method, but the number of the material and the member to be used is significantly reduced as compared with the welding method or the bolt and nut coupling method. In addition, since the rivet is inserted and coupled in one direction from the lower end to the upper end, the work can be continuously performed, more work can be performed in a short time, and work concentration can be increased, so that an effect of preventing a safety accident can be anticipated.

Another aspect of the cable tray according to the embodiment of the present invention includes a first roller shaft insertion hole formed by perforating the upper end surface and the lower end surface of the inner side rail of the cable tray when the cable tray is bent in the horizontal direction, A second roller shaft insertion hole formed in the upper portion of both sides of the side rail of the cable tray when the tray is bent in the vertical direction and a roller including a roller shaft inserted into the roller shaft insertion hole .

The roller includes a cylindrical first roller member having a roller shaft at one end, a cylindrical second roller member having a first roller member at one end and a roller shaft at the other end, And a spring positioned between the first roller member and the second roller member. When the roller shaft of the first roller member and the roller shaft of the second roller member are closely inserted into the roller shaft insertion hole by the spring, the roller is fixed between the side rails and can rotate.

Accordingly, the roller prevents the cable from being caught inside the cable tray to be bent or the cable from being detached from the cable tray when the operator pulls the cable from one side to set the cable, wherein the roller according to the embodiment of the present invention It is possible to reduce the cost and time in manufacturing the roller because the number of members is significantly smaller than that of the conventional roller.

Accordingly, the cable tray according to the embodiment of the present invention can be more easily assembled and installed with a significantly smaller number of members than the conventional cable trays, thereby increasing work efficiency in assembling and installing cable trays, . ≪ / RTI >

In addition, the cable tray according to the embodiment of the present invention can prevent the cable from being caught in the cable tray or detached from the cable tray when the cable is installed after assembling and installing the cable tray.

In the cable tray according to the embodiment of the present invention, the number of members is minimized and the galvanized gold plate, which is a raw material, is subjected to only minimum processing, thereby increasing the manufacturing efficiency, resulting in low cost and high efficiency .

1 is an exploded perspective view showing a grounding between a side rail according to a conventional art.
2A is an exploded perspective view of a cable tray according to an embodiment of the present invention.
2B is an assembled perspective view of a cable tray according to an embodiment of the present invention.
3A is an exploded perspective view illustrating grounding between a side rail connection and a side rail according to an embodiment of the present invention.
3B is an assembled perspective view illustrating the grounding between the side rail connection and the side rail according to an embodiment of the present invention.
3C is a perspective view illustrating a first connection member according to an embodiment of the present invention.
4A is an exploded perspective view showing the grounding between the side rail connection and the side rail according to another embodiment of the present invention.
4B is an assembled perspective view illustrating the grounding between the side rail connection and the side rail according to another embodiment of the present invention.
5A is a perspective view showing a rung according to an embodiment of the present invention.
FIG. 5B is an exploded perspective view illustrating a coupling between a rung and a side rail according to an embodiment of the present invention. FIG.
FIG. 6A is an exploded perspective view showing a coupling between a roller and a side rail when the cable tray is bent in the horizontal direction according to the embodiment of the present invention. FIG.
FIG. 6B is an exploded perspective view illustrating a combination of a roller and a side rail when the cable tray is bent in a vertical direction according to an embodiment of the present invention. FIG.

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

2A and 2B are an exploded perspective view and an assembled perspective view of a cable tray according to an embodiment of the present invention.

2A and 2B, a cable tray 1 according to an embodiment of the present invention includes a side rail 10, a first connecting member 20, and a second connecting member 30; And a roller (50).

The side rail 10 is a basic and main component of the cable tray, and is produced by bending a galvanized plate into a U-shape. The first connecting member 20 and the second connecting member 30 are members for connecting the side rails 10 in the longitudinal direction so that the first connecting member 20 and the second connecting member 30 are connected to the side rails 10 10 of the left and right side rails 10 to each other. The rungs 40 are members that allow the side rails 10 to be coupled in a parallel direction at regular intervals. The roller 50 is a member provided inside the bent portion when the side rail 10 is bent horizontally or bent vertically so that the cable is caught by the cable tray 1 or detached from the cable tray 1 Thereby preventing the occurrence of the problem.

FIGS. 3A and 3B are an exploded perspective view and an assembled perspective view illustrating the grounding between the side rail connection and the side rail according to the embodiment of the present invention. FIG.

3A and 3B, a cable tray 1 according to an embodiment of the present invention includes a side rail 10 having a connection hole 21 formed in both side end portions thereof and a connection hole 21 A connection plate 22 provided with a connection slot 23 protruding from the outer side of the side rail 10 to connect the side rail 10 and a ground plate 25 for energizing the side rails 10, And a connecting pin 31 inserted into the connecting slot 23 of the first connecting member 20 to fix the side rail 10 and the first connecting member 20 to each other, And a second connecting member (30) including the first connecting member (30).

The connection slot 23 of the first connection member 20 is inserted into the connection hole 21 formed in the one side end portion of the side rail 10 so that a part of the connection slot 23 protrudes outside the connection hole 21 The connection pin 31 of the second connection member 30 is inserted into the projecting portion while the side rail 10 is positioned therebetween so that the side rail 10 and the first connection member 20, 2 connecting members 30 are tightly coupled so that the side rails 10 are connected in the longitudinal direction.

The first connection member 20 is provided with a connection groove 24 formed by cutting a central part of the lower end of the connection slot 23 and a connection groove 24 corresponding to the connection groove 24, The first connecting member 20 and the second connecting member 30 are assembled by the connecting slot 23 and the connecting pin 31 while the side rail 10 is interposed therebetween The coupling protrusion 32 is inserted into the coupling groove 24 so that the first coupling member 20 and the second coupling member 30 can not be separated or separated in the vertical direction as well as in the horizontal direction.

Therefore, not only the two connecting members can maintain the coupling force between the members but also can prevent the members from falling off without a welding method or a bolt and nut coupling method.

Since the connection hole 21 and the connection groove 24 can be formed through a single punching process and the connection protrusion 32 and the connection slot 23 can be formed through a single pressing process, It is possible to save cost and time in manufacturing the element.

3C is a perspective view illustrating a first connection member according to an embodiment of the present invention.

3C, a cable tray 1 according to an embodiment of the present invention includes a ground plate 25 attached to an outer surface of a connecting plate 22 of a first connecting member 20 . The ground plate 25 includes a first ground plate 25a attached to a central portion of the connecting plate 22 among the outer surfaces of the connecting plate 22 of the first connecting member 20, A second ground plate 25b attached to the upper side connection plate 22 of the connection slot 23 and a third ground plate 25c attached to the lower side connection plate 22 of the connection slot 23. [ do. By attaching a plurality of the ground plates 25, the ground plates 25 can stably energize the side rails 10.

Therefore, in addition to the unnecessary additional members such as a separate grounding line 11 at the grounding, the grounding between the side rails 10 is completed by merely connecting the side rails 10, and additional work is also unnecessary . As a result, not only the efficiency of the process of connecting the side rails 10 in the longitudinal direction but also the efficiency of the overall process of installing the cable tray 1 is increased.

4A and 4B are an exploded perspective view and an assembled perspective view showing the grounding between the side rail connection and the side rail according to another embodiment of the present invention.

As shown in Figs. 4A and 4B, the first connecting member 20 and the second connecting member 30 are connected to each other by a connecting hole (not shown) formed at both ends of the side rail 10 as shown in Figs. 3A and 3B, As well as two individual types, as well as one type of connection hole 21 perforated at both ends of the side rail 10. It goes without saying that the grounding plates 25 can be installed on the first connecting member 20 even in the case of one type of connection hole 21 drilled at both ends of the side rail 10.

FIG. 5A is a perspective view illustrating a rung according to an embodiment of the present invention, and FIG. 5B is an exploded perspective view illustrating a combination of a rung and a side rail according to an embodiment of the present invention.

5A, the cable tray 1 according to the embodiment of the present invention includes a rung 40 for connecting the side rails 10 in parallel at regular intervals, A runout engaging pin 41 formed by bending a part of the metal plate forming the upper surface of the rung 40 and a first rivet hole 42 formed in the lower end surface of the rung 40.

5b, the side rails 10 are provided with a rung engagement slot 43 at an inner lower end thereof and a second rivet hole 44 formed at a lower end surface of the side rail 10, If the rivet 45 is inserted into the first rivet hole 42 and the second rivet hole 44 using the rivet gun after the rung engagement pin 41 is inserted into the engagement slot 43, Or the side rails 10 can be joined in parallel without bolt and nut coupling.

This method guarantees the bonding force such as the welding method or the bolt and nut coupling method, but the number of the material and the member to be used is significantly reduced as compared with the welding method or the bolt and nut coupling method.

In addition, since the rivet 45 is inserted and coupled from the lower end to the upper end in one direction, the work can be continuously performed, and more work can be performed in a short time, and work concentration can be increased, .

 The runner coupling pin 41 is inserted into the rung 40 through a single punching process through the first rivet hole 42 and the second rivet hole 44, It is possible to reduce the cost and time required for manufacturing the components included in the member.

FIG. 6A is an exploded perspective view showing a coupling between a roller and a side rail when the cable tray is bent in the horizontal direction according to the embodiment of the present invention. FIG.

6A, when the cable tray 1 is bent in the horizontal direction, the cable tray 1 according to the embodiment of the present invention is formed so that the upper end of the inner side rail 10 of the cable tray 1 And a roller 50 including a first roller shaft insertion hole 55 and a roller shaft 54 inserted into the first roller shaft insertion hole 55, .

The roller 50 includes a columnar first roller member 51 having a roller shaft 54 at one end and a first roller member 51 at one end and a roller shaft 51 at the other end, A cylindrical second roller member 53 having a first roller member 54 and a spring 52 positioned between the first roller member 51 and the second roller member 53 . When the roller shaft 54 of the first roller member 51 and the roller shaft 54 of the second roller member 53 are closely inserted into the first roller shaft inserting hole 55 by the spring 52, (50) is fixed between the side rails (10) to be rotatable.

Accordingly, the roller 50 prevents the cable from being caught inside the cable tray 1 that is bent when the operator pulls the cable from one side to lay the cable. The roller 50 according to the embodiment of the present invention It is possible to reduce the cost and time in manufacturing the roller because the number of members is significantly smaller than that of the conventional roller.

FIG. 6B is an exploded perspective view illustrating a combination of a roller and a side rail when the cable tray is bent in a vertical direction according to an embodiment of the present invention. FIG.

6B, in the cable tray 1 according to the embodiment of the present invention, when the cable tray 1 is bent in the vertical direction, both side surfaces of the side rails 10 of the cable tray 1 And a roller 50 including a second roller shaft insertion hole 56 formed in the second roller shaft insertion hole 56 and a roller shaft 54 inserted into the second roller shaft insertion hole 56. [

The roller 50 can be fixed and rotated between the side rails 10 when the roller 50 is installed as in the case where the cable tray 1 is bent in the horizontal direction.

Accordingly, the roller 50 prevents the cable from being caught in the cable tray 1 which is bent when the operator pulls the cable from one side to set the cable, .

As described above, the cable tray 1 according to the embodiment of the present invention minimizes the number of members of the cable tray, thereby increasing the efficiency in assembly and installation and the efficiency in manufacturing the member, It is understood that the basic technical idea is to make it easier to work even when it is installed. Therefore, many modifications may be made by those skilled in the art without departing from the scope and spirit of the present invention.

1 ... cable tray 10 ... side rail
11 ... Ground wire 12 ... Bolt
20 ... first connecting member 21 ... connecting hole
22 ... connection plate 23 ... connection slot
24 ... connection groove 25 ... ground plate
25a ... first ground plate 25b ... second ground plate
25c ... third ground plate 30 ... second connecting member
31 ... connection pin 32 ... connection projection
40 ... rung 41 ... rung binding pin
42 ... 1st rivet ball 43 ... rung coupling slot
44 ... 2nd rivet ball 45 ... rivet
50 ... roller 51 ... first roller member
52 ... spring 53 ... second roller member
54 ... roller shaft 55 ... first roller shaft insertion hole
56 ... second roller shaft insertion hole

Claims (7)

A side rail having at least one connection hole formed at both side end portions thereof,
A connection plate inserted into the connection hole and protruding from the outer side surface of the side rails to connect the side rails; and a ground plate attached to the connection plate to energize the side rails, , A first connecting member
And a second connection member inserted into the connection slot and including a connection pin for fixing the side rail and the first connection member;
Wherein the cable tray comprises: The method according to claim 1,
Wherein the ground plate includes at least one first ground plate attached to a center portion of the connection plate among the outer surfaces of the connection plate of the first connection member and in contact with the side rails, At least one second ground plate attached to the connection plate and brought into contact with the side rails and at least one third ground plate attached to the connection plate at the lower side of the connection slot and brought into contact with the side rails,
Wherein the cable tray comprises: The method according to claim 1,
In the first connecting member,
And a connection groove formed by cutting a central part of the lower end of the connection slot,
And the second connecting member
And a coupling protrusion coupled to the outer surface of the coupling pin to correspond to the coupling groove. 1. A cable tray comprising a rung for parallel engagement of side rails at regular intervals,
The rung includes a rung connecting pin formed by bending a part of the metal plate forming the top surface after being protruded to the end and a first rivet hole drilled at the end of the rung bottom surface,
Wherein the side rails are formed with a rung engagement slot formed through a pressing process at a lower end portion of an inner side surface of the side rails to insert the rung engagement pin therein and a rivet engagement hole formed in the lower end surface of the side rails, A second rivet hole for coupling the rung and the side rail,
Wherein the cable tray is provided with a cable. 5. The method of claim 4,
The first rivet ball is provided on at least one corner of both ends of the lower surface of the rung,
The second rivet ball has a first elliptical shape corresponding to the first rivet,
Wherein the cable tray is provided with a cable. When the cable tray is bent in one direction,
The cable tray includes:
A first roller member having a roller shaft at one end thereof and a first roller member at a first end thereof and a second roller member at a second end thereof, A second roller member having a roller shaft and a spring disposed between the first roller member and the second roller member and extending between the first roller member and the second roller member; Rollers of
Wherein the cable tray comprises: The method according to claim 6,
The roller shaft insertion hole, which is formed in the side rail and into which the roller shaft is inserted,
At least one pair of first roller shaft insertion holes formed in the upper end surface and the lower end surface of the inner side rail of the cable tray when the cable tray is bent in the horizontal direction;
And at least one pair of second roller shaft insertion holes formed at both sides of the side surfaces of the side rails of the cable tray when the cable tray is bent in the vertical direction
Wherein the cable tray comprises:

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