JPH11234843A - Cover for cable tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cover for cable trays having simple construction, fittable easily, and usable not only for middle-sized and small-sized cable trays for cables, etc., but also for large-sized ones. SOLUTION: A cover 11 is composed of a cover body 12 and protrusions 13a, 13b. The cover body 12 is bent so that its cross section may be in the shade of a chevron, and is arranged so that its ridgeline 12a may be arranged along the longitudinal direction of a cable tray. Besides, the cover body 12 is provided with bent sections 12b, 12c formed by bending both its ends inwards by an accute angle. The bent sections 12b, 12c are provided with protrusions 13a, 13b formed inside. By adopting the above-mentioned construction, the reinforcing brims of the cable tray are brought into contact with the insides of the bent sections 12b, 12c, and is fixed with the protrusions 13a, 13b, on the occasion of being fixed to the cable tray.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for covering a cable tray on which a cable or a pipe (hereinafter referred to as "cable" or the like) in a cable wiring or a pipe installed therewith is placed. The present invention relates to a cover suitable for covering a tray.

[0002]

2. Description of the Related Art A cable tray (also referred to as a cable rack) is provided to protect and store a cable when wiring the cable or the like to a place where electric equipment is installed in a power plant or a substation.

The cable trays are roughly classified into a ladder type and a solid type. The ladder tray has a plurality of child girders mounted as horizontal girders at the lower end of the opposing parent girders. The solid tray is formed by bending a plate to form a groove. Both types of cable trays are fixed in place, and are covered after cables and the like are placed inside.
Generally, a plate-shaped cover is used for the lid.

[0004] The cover is disclosed in Japanese Patent Application Laid-Open No. 7-10763.
No. 7 discloses a large rack cover device.
As shown in FIG. 5, the large rack cover device includes a cover 1 and a support 2 for supporting the cover. The cover body 1 is formed by bending a plate body into a mountain shape in cross section, and ridge lines 1 a are arranged along the longitudinal direction of the rack 3. The cover body 1 is provided with locking pieces 1b which are bent at both side edges and are parallel to the ridge line 1a in order to make contact with the main girders 3a, 3b of the rack 3. The cover body 1 is provided with a screw insertion hole in a portion located on the upper part of the rack 3 so as to be screwed to the opening of the rack 3 with a set screw 3.

[0005] On the other hand, the supporting bracket 2 comprises a parent girder 3a of the rack 3,
3b are temporarily provided. Further, hooks 5 that are locked to the outside of the main girders 3a and 3b and contact pieces 6 that abut against opposing inner edges of the main girders are provided at both ends of the rod. Reference numeral 4 denotes a sub-spar, and 7 denotes a support protrusion. With the above configuration, the cover 1
Strengthen its own structure and reinforce the connecting part of the cover 1.

[0006]

However, the technique disclosed in Japanese Patent Application Laid-Open No. 7-107637 has the following problems. Although this technique is intended for a cover having a width exceeding 1 m, the structure of the support bracket 4 is complicated,
Further, mounting the cover body 1 requires screwing work, which is complicated.

The present invention has been made to solve the above problems, and has a simple structure that can cover not only small and medium-sized cable trays used for cables and the like, but also large-sized cable trays. It is an object of the present invention to provide a simple cable tray cover.

[0008]

According to the present invention, there is provided a cover for covering a cable tray having a reinforcing edge whose upper end is bent outward, wherein the cover is bent into a mountain-shaped cross section.
A cover body having a bent portion having both ends bent at an acute angle inward, and a protrusion provided inside the bent portion, and a reinforcing edge of the cable tray abuts on the inside of the bent portion. A cover for a cable tray, characterized in that the cover for the cable tray is provided.

According to the present invention, since the cover body is bent to have a mountain-shaped cross section, the cable tray can be easily covered by pressing the cover body from above,
Since the cover on the cable tray is crimped to the cable tray by the projection inside the bent portion, the cover does not come off during use, and the cables and the like can be safely protected.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view taken along line AA of FIG.
FIG. 3 is a front view taken along line BB of FIG. The present invention covers a cable tray having a reinforcing edge whose upper end described later is bent outward.

As shown in FIGS. 1, 2 and 3, the cover 11 comprises a cover body 12 and projections 13a and 13b. The cover body 12 is bent into a mountain-shaped cross section so that the ridge line 12a is arranged along the longitudinal direction of the cable tray. The cover body 12 has bent portions 12b and 12c having both ends bent at an acute angle inward.
have. The bent portions 12b and 12c have a protrusion 1 inside.
3a and 13b are provided.

The cover 11 is generally made of the same material as the cable tray, and has a thickness smaller than that of the cable tray (steel plate, stainless steel plate, galvanized steel plate, etc.). The angles of the bent portions 12b and 12c are acute and practically less than 90 degrees and 50 degrees or more. When the obtuse angle is set, the cover 11 is easily detached, and when the angle is less than 50 degrees, it is difficult to attach the cover 11. When the cover 11 of the present invention is attached to the cable tray, the reinforcing edge of the cable tray has a bent portion 12b,
It is abutted on the inside of 12c and is fixed by protrusions 13a and 13b.

Next, a method of attaching the cover of the present invention to the cable tray will be described with reference to FIG. FIG. 4 is a sectional view showing a state in which the cover of the present invention is covered on the cable tray. An upper wide taper type cable tray was used as the cable tray 14. The upper taper type cable tray is transported,
In order to facilitate storage and the like, for example, in the case of a solid tray, both frames are inclined outward so as to widen toward the upper end opening. As shown in FIG. 4, one reinforcing edge 15a of the cable tray 14 is engaged with the inside of the one bent portion 12b of the cover body 12, and the other bent portion 12c is pressed against the cable tray 14 while pressing the ridge line 12a. Into the reinforcing edge 15b. The reinforcing edges 15a, 15b are pressed and fixed by the protrusions 13a, 13b inside the bent portions 12b, 12c.

Since the cover does not come off even when used by covering the cable tray 14 installed indoors, the cables 16 and the like are safely protected. In addition, even if the cable tray 14 installed outdoors is used by covering it, the angle of the bent portions 12b and 12c, the protrusion 13
The strength can be maintained by changing the shape and the like of a and 13b so that they do not come off due to wind or the like.

According to the present invention, the cover 11 can be attached to the cable tray 14 without using fasteners such as bolts inside the bent portions 12b and 12c.
The cover 11 can be easily attached to the cable tray 14 simply by engaging the reinforcing edges 15a, 15b of the cable tray 14. In addition, since a fastener such as a bolt is not used, the number of parts is small, and the cost can be reduced.

Further, since the cover 11 does not require through holes such as bolts, there is no need to plan the layout of the cover. Further, the cover 11 has protrusions 13a inside the bent portions 12b and 12c,
Since the cable 13 is pressed against the cable tray 14 by the use of the cable 13b, it does not come off due to wind or the like during use, so that the cable 16 and the like are safely protected.

In the above embodiment, the cover for the solid tray has been described, but the same effect can be obtained by using the cover for a ladder tray.

[0018]

As described above, the cover of the present invention has a simple structure and can easily cover not only small and medium-sized cable trays used for cables and the like, but also large-sized cable trays. Since there is no cable, the cables are safely protected.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a side view taken along line AA of FIG. 1;

FIG. 3 is a front view taken along line BB of FIG. 1;

FIG. 4 is a cross-sectional view showing a state in which a cover of the present invention is covered on a cable tray.

FIG. 5 is a cross section showing an example of a conventional large rack cover device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Cover 12 Cover main body 12a Ridge line 12b, 12c Bent part 13a, 13b protrusion 14 Cable tray 15a, 15b Reinforcement edge

Claims (1)

[Claims] 1. A cover for covering a cable tray having a reinforcing edge whose upper end is bent outward, said cover being bent into a mountain-shaped cross section and both ends being bent inward at an acute angle. A cable comprising a cover body having a bent portion and a projection provided inside the bent portion, wherein a reinforcing edge of the cable tray is brought into contact with the inside of the bent portion. Tray cover.