JPH05328565A - Rack for cable - Google Patents

Abstract

PURPOSE:To obtain a rack for cables, by which the cable can be laid by a weak force and be prevented from being damaged, by configuring the respective child beams of the rack out of a plurality of rollers and a plurality of supporting shafts every two-ends of which are supported by the parent beams of the rack. CONSTITUTION:A child beam 2a comprises a roller 7 and a supporting shaft 6 whose two ends are fastened on parent beams 3. A cable 1 is moved on a plurality of child beams 2a, while a supply person puts the cable 1 on the child beams 2a and supplies the cable 1 little by little, and while a drawing person draws the end of the cable 1. At this time, since the cable 1 is so contacted with the rollers 7 that the rollers 7 are rotated, the frictional force between the cable 1 and the child beam 2a is reduced largely. That is, the respective child beams comprise a plurality of supporting shafts every tow-ends of which are supported by the parent beams and a plurality of rollers which are rotated respectively using the supporting shafts as their centers. Therefore, the cable can be laid with a weak force and be prevented from being damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable rack used for extending and laying cables in electrical equipment works and the like.

[0002]

2. Description of the Related Art FIGS. 4 and 5 are a side view and a plan view, respectively, showing a conventional cable rack. In FIGS. 4 and 5, 1 is a cable extended by the cable rack and laid, 2 is a plurality of sub-beams supporting the cable 1 and having a rectangular cross section, 3 is both ends of the sub-beam 2 fixed The parent girders 4 of the book are hanging fittings for hanging the cable rack from the ceiling 5 by connecting the parent girders 3 to the ceiling 5.

Next, the operation of the conventional cable rack shown in FIGS. 4 and 5 will be described. When laying the cable 1, first, the worker is divided into two sets, a sender and a puller. Then, the feeder gradually feeds the cable 1 toward the puller and places it on the sub beam 2, and the puller pulls the tip of the cable 1. As a result, the cable 1
While rubbing the upper part of the child girder 2, it is moved from the sender to the puller and installed.

After the cable 1 has been laid,
Other cables may be laid in a similar manner. Another cable after laying is arranged adjacent to the cable 1.

[0005]

The conventional cable rack is constructed as described above, and because of the frictional resistance acting between the cable 1 and the sub beam 2 due to the weight of the cable 1, the cable rack is A large amount of force is required for laying No. 1. For this reason, there is a problem that a worker who is aging and has a small number of workers due to a lack of manpower has a heavy burden, and that the work using the conventional cable rack requires much labor and time. There is also a problem that the cable 1 is worn due to the tensile force, impact force, and frictional force during installation.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a cable rack which can lay a cable with a small force and can prevent the cable from being worn.

[0007]

In a cable rack according to claim 1 of the present invention, each child girder has a support shaft whose both ends are supported by a parent girder, and a plurality of rollers which rotate about the support shaft. It is composed of

The cable rack according to the second aspect of the present invention has one roller in which each sub-girder is rotatably supported by the parent girder.

[0009]

In the cable rack of the present invention, the cable moving above the spar contacts the spar and the spar rotates, so that the frictional force between the cable and the spar is significantly reduced.

[0010]

EXAMPLES Example 1. 1 and 2 show a first embodiment of the present invention.
Are side views and plan views, respectively, and the same or corresponding parts as those in FIGS. 4 and 5 are designated by the same reference numerals and the description thereof will be omitted. In FIGS. 1 and 2, 6 is a plurality of support shafts whose both ends are fixed to the main girder 3, and 7 are four support shafts provided on each support shaft 6.
It is a roller that rotates around the support shaft 6. Therefore, each roller 7 can rotate independently. The support shaft 6 and the roller 7 constitute a child beam 2a.

Next, the operation of the first embodiment of the present invention shown in FIG. 1 will be described. As in the conventional case, the feeder sends the cable 1 little by little and places it on the sub beam 2a, and the puller pulls the tip of the cable 1 to move the cable 1 on the sub beam 2a. At this time,
Since the cable 1 comes into contact with the roller 7 of the spar 2a and the roller 7 rotates, the frictional force between the cable 1 and the spar 2a is significantly reduced.

When another cable is laid when the cable 1 has been laid (the state shown in FIG. 2), the four rollers 7 can rotate independently of each other. The roller 7 of does not rotate, only the roller 7 under the other cable rotates. Therefore, another cable can be installed with a small force.

Although both ends of each support shaft 6 are fixed to the main girder 3, they may be rotatably supported.

Example 2. In the first embodiment, each support shaft 6 is provided with a plurality of rollers 7, but when the number of cables 1 to be laid is small and the length of the sub-beam 2a may be short, as shown in FIG.
As shown in FIG. 1, each support shaft 6 fixed to the main beam 3 is provided with one long roller 8 that rotates about the support shaft 6.
May be provided. The support shaft 6 and the roller 8 may be integrated, and both ends of the support shaft 6 may be rotatably supported by the main beam 3.

[0015]

As described above, according to the cable rack of claim 1 of the present invention, each sub-girder has a plurality of support shafts whose both ends are supported by the parent girder, and a plurality of which rotate about the support shaft. Since it is composed of a roller and a roller, it is possible to lay the cable with a small force and it is possible to prevent the cable from being worn.

Further, according to the cable rack of the second aspect of the present invention, since each child girder has one roller rotatably supported by the parent girder, in addition to the effect of the first aspect,
Further, there is an effect that the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing Embodiment 1 of the present invention.

FIG. 3 is a plan view showing a second embodiment of the present invention.

FIG. 4 is a side view showing a conventional cable rack.

FIG. 5 is a plan view showing a conventional cable rack.

[Explanation of symbols]

 1 cable 2a child girder 3 parent girder 6 support shaft 7, 8 roller

Claims (2)

[Claims] 1. A cable rack used for extending and laying a cable, comprising a plurality of sub-girders on which the cables are mounted and a parent girder supporting the child girders, wherein each of the child girders is the parent girder. A support shaft whose both ends are supported by the girder,
A cable rack comprising a plurality of rollers that rotate around the support shaft. 2. A cable rack used for extending and laying a cable, comprising a plurality of sub-girders for mounting the cable and a parent girder for supporting the child girders, wherein each of the child girders is the parent girder. A cable rack having one roller rotatably supported by a girder.