KR-102961782-B1 - Rung for cable tray

Abstract

The present invention relates to a cable tray rung that prevents the first fixing plate from bending due to the external force applied by the bolt when fastening the bolt penetrating the side rail and the external force applied by the base plate to bend the first fixing plate when fastening the bolt penetrating the side rail and the fastening hole of the first fixing plate, thereby ensuring stable connection with the side rail. More specifically, the invention comprises: a base plate; a side plate formed by bending the two ends of the base plate that do not face the side rail so that they face each other; a bottom plate formed by bending one end of the side plate that does not face the side rail so that it faces the base plate; and a first fixing plate formed by bending the two ends of the base plate that face the side rail so that they face each other, wherein a protrusion is formed in the central part protruding toward the opposite side of the side rail, a fastening hole is formed from the central part to the protrusion, fitting holes are formed on both sides of the fastening hole, and one end adjacent to the bottom plate is bent to form a bent portion facing the base plate. The present invention relates to a cable tray rung characterized by comprising: a second fixing plate having two ends of a side plate facing a side rail bent so as to face each other, which is overlapped with a first fixing plate so as not to cover a fastening hole, and a fitting projection formed protruding from the outer surface to be fitted into a fitting hole when overlapped with the first fixing plate.

Inventors

• 엄혜정

Assignees

• 주식회사 성실엔지니어링

Dates

Publication Date

20260507

Application Date

20250328

Claims (6)

1. In a cable tray rung (1000) connecting a pair of side rails (11) of a cable tray (10), The above cable tray rung (1000) is, A base plate (100) that supports the pair of side rails (11) above; Side plate (110) formed by bending both ends of a base plate (100) that do not face the above side rail (11) so that they face each other; A bottom plate (120) formed such that one end of a side plate (100) that does not face the above-mentioned side rail (11) faces the base plate (100); A first fixing plate (130) in which both ends of a base plate (100) facing the side rail (11) are bent to face each other, a protrusion (131) is formed in the central part protruding to the opposite side of the side rail (11), a fastening hole (132) is formed from the central part to the protrusion (131), fitting holes (133) are formed on both sides of the fastening hole (132), and one end adjacent to the bottom plate (120) is bent to form a bent portion (134) facing the base plate (100); and, The side plate (110) facing the above side rail (11) is formed by bending both ends of the side plate (110) so as to face each other, and is overlapped with the first fixing plate (130) so as not to cover the fastening hole (132), and the second fixing plate (140) has a fitting projection (141) formed protruding from the outer surface that is fitted into the fitting hole (133) when overlapped with the first fixing plate (130); On the mutually facing surfaces of the above pair of side plates (110), a first locking projection (111) on which a first fixing plate (130) is caught is formed protrudingly, and On the surface of the bottom plate (120) facing the base plate (100), a second locking projection (121) is formed protruding to catch the bent portion (134), and The first fixed plate (130) above is, A connecting plate (130a) connected to the base plate (100); and, A cable tray rung characterized by comprising: an extension plate (130b) formed protruding from the above-mentioned connecting plate (130a), formed to be wider than the connecting plate (130a) in the width direction of the above-mentioned cable tray rung (1000), having the above-mentioned protrusion (131) and fastening hole (132) formed in the central part, having the above-mentioned fitting hole (133) formed on the outer surface on each side of the fastening hole (132), and having a bent portion (134) formed at one end adjacent to the above-mentioned bottom plate (120).
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5. In paragraph 1, A cable tray rung characterized by having first contact protrusions (101) formed protruding from both sides of a connecting plate (130a) that are in close contact with the side rail (11) on the surface of a base plate (100) facing the side rail (11).
6. In paragraph 1, A cable tray rung characterized by having a second contact projection (122) formed protrudingly on the surface of the bottom plate (120) facing the side rail (11) to be in close contact with the side rail (11).

Description

Rung for cable tray The present invention relates to a rung for a cable tray that connects a pair of side rails of a cable tray. Generally, in large buildings or factories, cable trays are mounted on multiple hangers fixed to the ceiling slab so that cables such as power lines and communication lines can be organized and wired in a safe space, and cables such as power lines and communication lines are placed on the cable trays. The above cable tray consists of a pair of side rails arranged side by side on the left and right sides with a certain length, and a number of rungs installed at predetermined intervals between the pair of side rails. At this time, the above-mentioned rung is an important component of the cable tray because it connects a pair of side rails and allows the cable to be seated. In this regard, Patent Document 1 comprises: first and second main horizontal plates bent orthogonally at both ends of a base plate having a rectangular shape; first and second sub-horizontal plates bent orthogonally at both ends of the first and second main horizontal plates in a direction that overlaps each other; first and second base vertical plates bent orthogonally at both ends of the base plate and having first and second fastening screw holes formed in the center; first and second left main vertical plates bent orthogonally at each left end of the first and second main horizontal plates and overlapped with the first base vertical plate; first and second right main vertical plates bent orthogonally at each right end of the first and second main horizontal plates and overlapped with the second base vertical plate; and a pair of first stoppers extending from both ends of the base plate and protruding from both ends of the bent first and second left main vertical plates and the bent first and second right main vertical plates. A cable tray rung is provided, comprising: a pair of second stoppers extending from both ends of the first and second sub-horizontal plates and protruding from both ends of the first and second left main vertical plates and the first and second right main vertical plates; wherein a left half-groove is formed at the end of the first and second left main vertical plates; a circular space is formed in which the left half-groove is butted against the first base vertical plate when the first and second left main vertical plates are overlapped with the first base vertical plate to expose the first fastening screw hole of the first base vertical plate; a right half-groove is formed at the end of the first and second right main vertical plates; and a circular space is formed in which the right half-groove is butted against the second base vertical plate when the first and second right main vertical plates are overlapped with the second base vertical plate to expose the second fastening screw hole of the second base vertical plate. However, in the case of the above-mentioned patent document 1, when the first and second fastening screw holes of the cable tray rung are fastened to the bolt penetrating the tray rail, there was a risk that the first and second base vertical plates would bend due to the external force of the fastening of the bolt. As a result, there was a concern that the connection between the cable tray rung and the tray rail could not be stably formed. FIG. 1 is a perspective view of a cable tray with a rung for a cable tray applied according to an embodiment of the present invention. FIGS. 2 and FIGS. 3 are perspective views of a rung for a cable tray according to an embodiment of the present invention. FIG. 4 is a front view, a bottom view, and a front view with the second fixing plate removed of a rung for a cable tray according to an embodiment of the present invention. FIGS. 5 and 6 are cross-sectional views of a rung for a cable tray according to an embodiment of the present invention. FIG. 7 is an unfolded view of a rung for a cable tray according to an embodiment of the present invention, FIG. 8 is a bending state diagram of a rung for a cable tray according to an embodiment of the present invention, FIG. 9 is a cross-sectional view of the combination of a rung and a side rail for a cable tray according to an embodiment of the present invention. Accordingly, an embodiment of the present invention as described above will be explained in detail with reference to the attached drawings as follows. As illustrated in FIGS. 1 to 9, a cable tray (10) to which a cable tray rung (1000) according to an embodiment of the present invention is applied is connected in multiple long lengths by connecting members and mounted on a hanger installed on a ceiling slab so that the cable is placed thereon, that is, wired. The above cable tray (10) is composed of a pair of side rails (11) arranged side by side and a plurality of cable tray rungs (1000) of the present invention installed at predetermined intervals between the pair of side rails (11) to connect the pair of side rails (11). Here, a f