JPH11113131A - Cable tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable tray height of which can be adjusted by using double-layered side surface construction members, whose inside protrusions are covered which facilitates additional installation of a cable and which protects cable covering from damages. SOLUTION: A cable tray 7 consists of a lower part construction member 8, side surface construction members 9 and 10 fixed to both sides, and cables are laid inside the tray 7. The side surface construction members 9 and 10 are double-layered. Vertical guide grooves 11 and a plurality of key-shaped fixing grooves 12 crossing the vertical guide grooves 11 are formed in both layers of each side surface construction member. Further, both layers can slide vertically along the grooves relative to each other and fixed to each other with the fixing grooves by bolts, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cable tray for laying a large number of power and control cables and the like.

[0002]

2. Description of the Related Art Cables for power and control in various plants are laid by installing a gutter-like cable tray between devices and the like to connect them, and accommodating a large number of cables therein. ing. As shown in the perspective view of FIG. 10 and the front view of FIG.
Is arranged on both sides of a plurality of lower component members 2 having a U-shaped cross section arranged at intervals, and side component members 3 having a U-shaped cross section,
The cables are fixed to each other with bolts 4 and nuts 5 and a number of cables 6 are housed side by side.

However, the shapes of the lower component 2 and the side component 3 are designed based on the amount of cable 6 to be accommodated at the time of designing and constructing the cable tray 1, and the size and number of cables are adjusted to the amount of cable. Tray 1 is installed. If it is expected that the number of cables 6 to be laid will exceed the specified laying amount of the cable tray 1, the cable tray 1 may be increased or the cable 6 laying route may be changed to newly install the cable tray 1. And so on.

[0004] Further, in response to an increase in the number of cables 6 due to the subsequent addition or modification of plant equipment, if the prescribed laying amount of the cable tray 1 is exceeded, The height of the cable tray 1 was changed by attaching a raising member (not shown).

[0005]

As described above, after the design and construction of the cable tray 1, the increase in the number of cables 6 due to the addition or change or modification of the plant equipment causes
When the laying amount of the cable tray 1 exceeds the specified value,
The cable tray 1 may be raised.

[0006] However, after the cable tray 1 is installed, a raising material is installed on the side structural member 3, and
The work of fixing with the mounting bolts and nuts and the work of additionally laying the cables 6 after raising are often complicated and difficult because the installation place of the existing cable tray 1 is often narrow. In addition, the work environment is often poor in a nuclear power plant, a chemical plant, and the like, and there is a problem that workability is low, for example, the covering of the cable 6 is easily damaged by a raising material and a mounting bolt and nut at the time of additional laying.

An object of the present invention is to make it possible to adjust the height by previously stacking two side-constituting members and to cover the internal projections, thereby easily increasing the cable laying and preventing damage to the coating. To provide a cable tray.

[0008]

In order to achieve the above object, a cable tray according to the first aspect of the present invention is a cable tray comprising a lower component and side components fixed on both sides, and laying a cable therein. The side component members on both sides form a vertical guide groove and a plurality of key-shaped fixing grooves intersecting with each other as a two-layer stack,
It is characterized in that the guide groove can be slid in a vertical direction by a bolt or the like and fixed by a fixing groove.

The two side component members are vertically slid in the guide grooves by bolts or the like for fixing each other, and are fixed by restricting the vertical and horizontal movements by the key-shaped fixing grooves. Accordingly, the height of the side surface of the cable tray can be easily increased, and the cable can be easily added.

According to a second aspect of the present invention, in the cable tray according to the first aspect, a bolt or the like for fixing the two side component members to each other is a fixing fitting for engaging with the outer side component member. Features. The fixing of the side components made of two sheets is not a bolt and a nut but a simple operation bracket, so that the fixing of the side components is canceled with one touch, and the side components slid in the vertical direction are fixed again. Thus, the cable tray can be easily raised.

According to a third aspect of the present invention, there is provided a cable tray according to the first or second aspect, wherein a head such as a bolt for fixing the two side component members to each other, a side component member and a lower component member are provided. The cover is provided on the head of the bolt for fixing the bolt.

At the bottom of the cable tray, bolts for fixing the lower component and the side component are inserted into the lower component, so that the lower component serves as a cover and the head of the bolt is at the bottom. Does not protrude. In addition, the head of the bolt that fixes the double-sided side component protruding from the side surface in the cable tray is surrounded by the cover provided on the side component, so that it does not directly contact the cable, thereby Makes smooth contact with the surface of the lower component and the cover.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. Note that the same components as those of the above-described related art are denoted by the same reference numerals, and detailed description thereof will be omitted. One embodiment relates to claims 1 to 3,
As shown in the perspective view of FIG. 1, the front view of FIG. 2, and the side view of FIG. 3, the cable tray 7 has bolts (not shown) on both sides of a plurality of lower constituent members 8, each having an L-shaped cross section. 4
Is fixed by the nut 5 so that the head of the lower component 8 does not protrude above the lower component 8.

Further, two side component members 10 each having an inverted L-shaped cross section are arranged along the outer side surface of the side component member 9 in an overlapping state. Note that the inner side surface component 9 and the outer side surface component 10 have longitudinal guide grooves whose positions match each other.
11 and a plurality of key-shaped fixing grooves 12 intersecting with each other (here, three places are shown ascending to the right).
It is configured to be fixable by a set of bolts and nuts or the like (here, a case of a fixing bracket is shown) (claim 1).

The lower component 8 has, for example, a U-shape in cross section as shown in an enlarged partial cutaway front view in FIG. 4 and an enlarged sectional view in FIG. By disposing and fixing the fixing plate 13 through which the bolt 4 is inserted into the opening sides at both ends by welding, the bolt 4
Does not protrude above the lower component 8, but is covered by the lower component 8.

Further, as shown in a front view of an enlarged view of a part of a main part of FIG. 6 and a plan view of an enlarged view of a part of an essential part of FIG. The head of the bolt 15 of the fixing bracket 14 for fixing
(Claim 3).

Further, the side component 9 and the side component 10
The two sets of bolts and nuts for fixing the bolts and the nuts in the fixing grooves 12 are fixed metal fittings 14 as shown in an enlarged front view of a main part of FIG. 8 and an enlarged side view of a main part of FIG.
For example, a fixed lever 17 formed of an elastic body such as spring steel is attached to the tip end of the second member (claim 2).

The fixing member 14 is formed by inserting a bolt 15 into a guide groove 11 formed in the side component member 9 and the side component member 10 in a two-layered state, and connecting one end of a fixing lever 17 in the fixing groove 12 to the side component member. When locked to the hook 18 provided outside the side 10, the elasticity of the fixing lever 17 presses the side surface component 9 and the side surface component 10 and fixes them with one touch.

Next, the operation of the above configuration will be described. The cable tray 7 includes a plurality of lower component members 8, a side component member 9 fixed to both sides by bolts 4 and nuts 5, and a side component member 10 stacked along the outside of the side component component 9 to form a key formed on each other. At both ends of the mold fixing groove 12, two sets of fixing fittings 14, or bolts and nuts (not shown) are used for fixing.

As a result, the cable tray 7 is formed in a gutter shape, and the side surface component 10 is connected to the side surface component 9 by bolts of the fixing fitting 14 at the left end of the key-shaped fixing groove 12 shown in FIG. The movement in the vertical direction is regulated by 15 and the movement in the left and right direction is regulated by the bolt 15 of the fixing bracket 14 at the right end, so that many cables 6 can be laid inside.

Accordingly, in the cable tray 7, since the amount of the cable 6 to be laid can be easily changed, after the design and construction of the cable tray 7, the increase of the cable 6 due to addition, change or modification of the plant equipment is performed. If the current installation amount of the cable tray 7 exceeds the specified value due to the request, the side component 10 is slid in the following procedure to cope with the increase in the accommodation of the cable 6.

First, in the fixing grooves 12 at both ends of the side surface component 10, two sets of nuts (not shown) fixing the side surface component 9 and the side surface component 10 are loosened, and the bolt is moved to the guide groove 11. As well as bolts in this guide groove
The outer side component 10 is slid up along 11.

Each upper fixing groove in the side surface component 10
At 12, the side component 10 is fixed to the side component 9 again by moving the bolt from the guide groove 11 to both ends and tightening the nut. Thereby, since the height of the cable tray 7 can be increased, the laying amount of the cable 6 increases, and the additional accommodation of the new cable 6 becomes possible.

In addition, when the capacity of the cable 6 is increased, the bolts and nuts for fixing the side component members 9 and the side component members 10 in the two-layered state are the fixing fittings 14 shown in FIGS. Thus, the operation of increasing the height of the cable tray 7 can be performed easily and quickly, and thus the operation of increasing the amount of laid cable 6 can be performed quickly and easily. That is, the two sets of fixing brackets 14 are previously provided with the side component 9 and the side component.
At the time of assembling 10, two bolts 15 are inserted into the guide groove 11, and a fixing lever 16 is attached to the tip of each bolt 15.
Attach.

As a result, the side component 10 is replaced with the side component 9
Slidably with respect to each other, and furthermore, hold the bolt 15 of the fixing bracket 14 at both ends of the fixing groove 12, and at one end of the fixing lever 16, separately at the outside of the side surface component 10, at both ends of the fixing groove 12. The locking lever 16 locks the side component 10 and the side component 9 together with the bolt 15 by being fixed to the hook 18 provided at the upper portion to fix the side component 9 by pressing.

Therefore, when the height of the cable tray 7 is increased, the fixing levers 16 of the two sets of fixing fittings 14 in each fixing groove 12 are detached from the respective hook fittings 18 by one touch, and the bolts 15 are removed from the guide grooves. Then, the outer side component 10 is slid upward along the guide groove 11. In each of the upper fixing grooves 12 in the side surface component 10, two sets of fixing fittings 14 are respectively moved from the guide grooves 11 to both ends, and one end of the fixing lever 16 is locked to the hook fitting 18.

As a result, the fixing lever 16 presses and fixes the side component 10 and the side component 9 again, and the height of the cable tray 7 is increased by the sliding of the side component 10. In addition, the laying amount of the cable 6 is increased, so that a new cable 6 can be additionally accommodated, and the work of increasing the laying amount can be performed extremely easily and quickly. In addition,
Plural lower components 8 and side components 9 and 10 fixed on both sides
A large number of cables 6 are laid inside the cable tray 7 formed in a gutter-like shape by the plurality of lower constituent members 8.
Serve as the bottom and support the weight of the cable 6.

In this case, since the lower component 8 covers the head of the bolt 4 for fixing the side component 9 as shown in FIGS. 4 and 5, the lower component 8 supports the laid cable 6. Since no protrusions or the like are formed on the surface of the material 8, the coating of the cable 6 is not damaged during movement of the cable 6 during the work of laying and relocating the cable 6, and during support after the laying.

As shown in FIGS. 6 and 7, the side component 9 is provided with a cover 16 on the head of the bolt 15 for fixing the side component 10, so that the lower component Cable 6 at the time of laying and relocating work and after laying as in 8
There is no problem that damages the coating. Therefore, the work of laying and relocating the cables 6 to the cable tray 7 is easy, and the safety after the laying is high, so that the reliability and the maintainability are improved.

[0030]

As described above, according to the present invention, since the side structure of the cable tray is doubled and slidable in the vertical direction, the height of the cable tray can be easily adjusted by the guide groove and the fixing groove. In the existing cable tray, it is possible to easily and quickly respond to a request for changing the amount of laid cables. In addition, the slide of the two side structural members for adjusting the height and the fixing operation can be performed quickly and easily by using the one-touch fixing bracket.

Since the inside of the cable tray on which the cables are laid is covered with a cover or the like so that the heads of the fixing bolts do not protrude, the work of laying the cables becomes smooth, and damage to the coating is prevented. Workability, safety and reliability are improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cable tray according to an embodiment of the present invention.

FIG. 2 is a front view of the cable tray according to the embodiment of the present invention.

FIG. 3 is a side view of the cable tray according to the embodiment of the present invention.

FIG. 4 is an enlarged partial cutaway front view of a main part of the lower component cover according to the embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a main part of a lower component cover according to the embodiment of the present invention.

FIG. 6 is an enlarged partial cutaway front view of a main part of the bolt cover according to the embodiment of the present invention.

FIG. 7 is an enlarged partial cutaway plan view of a main part of the bolt cover according to the embodiment of the present invention.

FIG. 8 is an enlarged front view of a main part of the bolt with the one-touch fixing bracket according to the embodiment of the present invention.

FIG. 9 is an enlarged side view of a main part of a bolt with a one-touch fixing bracket according to an embodiment of the present invention.

FIG. 10 is a perspective view of a conventional cable tray.

FIG. 11 is a front view of a conventional cable tray.

[Explanation of symbols]

1, 7: cable tray, 2, 8: lower component, 3: side component, 4, 15: bolt, 5: nut, 6: cable, 9: inner side component, 10: outer side component , 11
... Guide groove, 12 ... Fixed groove, 13 ... Fixed plate, 14 ... Fixed bracket, 16
... cover, 17 ... fixed lever, 18 ... hooks.

Claims (3)

[Claims] 1. A cable tray, comprising a lower component and side components fixed on both sides, on which cables are laid, wherein the side components on both sides are overlapped with each other in a longitudinal guide groove and a plurality of intersecting cross sections. A cable tray, wherein a key-shaped fixing groove is formed, and the guide groove is slidable in a vertical direction by a bolt or the like and is fixed by the fixing groove. 2. The cable tray according to claim 1, wherein a bolt or the like for fixing the side component members formed of the two sheets to each other is used as a fixing fitting for engaging with the outer side component members. 3. A cover is provided on a head of a bolt or the like for fixing the side component members of the two-layered structure to each other and a head of a bolt for fixing the side component and the lower component member. The cable tray according to claim 1 or 2.