JPH0412730Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a cable rack roller, which is a ladder-shaped cable rack for laying and storing a large number of cables in buildings, factories, and other architectural structures. Used to route cables inside the
This invention relates to a wire stretching roller for a cable rack, which enables smooth and quick wire running work even for long cables with large diameters.

(Prior Art) Conventionally, various cables have been wired in buildings and factories, and this has been done by storing the wires in cable racks. When running wires into cable racks, cables often have large diameters and are long, so wire stretching rollers are used as guides.
Various structures have been proposed. For example, the cable tray shown in Japanese Utility Model Application Publication No. 55-102316,
This is an electric wire attachment jig shown in Japanese Utility Model Application Publication No. 60-48310.

(Problems to be Solved by the Invention) However, in the cable tray disclosed in Japanese Utility Model Application Publication No. 55-102316, since the center of the roller is concave, it is very troublesome to mold the roller itself. In addition, when the roller and the cable came into strong contact, the cable was damaged, and in some cases, the cable was damaged.

Furthermore, since each roller is built into a sturdy shaft, and this shaft is fixed via a stopper to the side plate of the frame with a key-shaped groove, vibrations and shocks caused by the movement of the cable can be prevented. The shaft easily came off the frame side plate. Further, providing a key-shaped groove in the side plate of the frame body is also very troublesome in forming the side plate.

On the other hand, in the wire attachment jig shown in Japanese Utility Model Application Publication No. 60-48310, multiple cylindrical bearings are attached to the main girder via a mounting bracket with a downward U-shaped fixing part. Since the structure of the metal fittings is complicated, it is very troublesome to manufacture them.

In addition, even when the fixed part of the mounting bracket is clamped between the main girder and bolted, the cylindrical bearing is located above the fixed part, so vibration and impact caused by the movement of the cable can be avoided. As a result, the mounting bracket could come off the main girder or fall down in the direction of movement of the cable, making it impossible to support the cable robustly. That is, since the resistance force when the cable moves on the bearing acts above the fixed part, the bolted part of the fixed part serves as a fulcrum and the mounting bracket tends to tilt.

Furthermore, since the cylindrical bearing is located above the fixing part and there is a difference in level between it and the child girder, the cable that is led in is easily damaged.

Therefore, this invention was devised in order to eliminate the various drawbacks that existed in the past as mentioned above. By doing so, it is easy to remove the cable after wiring work is completed, and the cable is placed in the specified position in the cable rack just by being removed, eliminating the need for moving the cable again and improving work efficiency. To provide a wire drawing roller for a cable rack which is greatly improved, allows roller forming and roller fixing to be extremely simple, and supports cables robustly.

(Means for Solving the Problems) In order to achieve the above-mentioned object, this invention includes a roller shaft installed between the main girders of a cable rack through which the cable is drawn,
A plurality of disc-shaped wire threading rollers are made of synthetic resin and are made to be thicker in the center than the outer periphery, and are arranged in rows on a roller shaft so that they rotate, and the roller shaft is removably fixed to the main girder. The main girder is formed by vertically connecting recesses each having a substantially U-shaped cross section, and the fixing means is formed by fitting a roller shaft into the lower recess of the main girder to form the lower recess. The mounting screw inserted from the outside was screwed into the screw hole formed at the end of the roller shaft.

(Function) In the wire drawing roller for a cable rack according to the present invention, the rollers are arranged and fixed between the main girders at appropriate intervals via fixing means within the cable rack through which the cables are drawn in and passed.

The roller shaft is fixed by fitting the roller shaft into the lower recess of the parent girder, inserting a mounting screw from the outside of the lower recess, and screwing the mounting screw into the screw hole formed at the end of the roller shaft.

In this way, the cable to be wired is placed on the rollers disposed within the cable rack, and the wire threading operation is performed using the rotating action of the rollers. At this time, each roller rotates as a result of the cable threading pressure to reduce the frictional resistance caused by the cable threading.
Send out the cable.

After the wire threading operation is completed, the fixing means is released to remove the invented wire drawing roller from the cable rack, and the cable after threading is left as it is on the child girder of the cable rack.

On the other hand, it is possible to bind the cable before or after removing the wire drawing roller of this invention after the wire has been wired.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

The reference numeral 1 shown in the figure is a roller shaft, which is detachably disposed in a built-up manner within a predetermined cable rack L through which the cable W is led through, via a fixing means 2.

That is, between the parallel master girders L1 facing each other,
The main girder L in the cable rack L, which has an almost ladder shape and is constructed by erecting and arranging the child girders L2 at predetermined intervals.
1 is placed between each other. This master girder L1 is formed by vertically connecting a concave portion having a substantially U-shaped cross section.

The roller shaft 1 itself may be hollow or solid; rollers 6, which will be described later, are arranged in a row on the roller shaft 1 to rotate smoothly, and the roller shaft 1 can be freely attached and detached between the main girders L1. It suffices if it is satisfied that it is placed.

The roller shaft 1 shown in the figure is made into a hollow cylinder to reduce its weight in order to make it easy to carry.

The fixing means 2 for constructing and fixing the roller shaft 1 between the parent girders L1 is such that the roller shaft 1 is closed at both ends with a cover plate 4 in which screw holes 3 are formed, and the cover plate 4 is closed between the parent girders L1. The roller shaft 1 is fitted into the lower recess of the girder L1, and the mounting screw 5 inserted from the outside of the lower recess is screwed into the screw hole 3.

Further, a plurality of rotatable disc-shaped wire passing rollers 6 are arranged in a row on the roller shaft 1. Since the rollers 6 arranged in a row rotate individually to make the cable W pass through extremely smoothly, each of the rollers 6 has a slight interval on the outer circumferential surface of the roller 6, which is the wire passing surface. Ru. Therefore, as shown in the figure, the center portion of the roller 6 is formed to be thicker than the outer peripheral portion on both sides.

Further, the roller 6 is made of synthetic resin such as polyacetal resin.

This then explains its use.

In the cable rack L that has been laid and fixed, the wire drawing rollers of this invention are installed and fixed between the main girders L1 at appropriate intervals. That is, the roller shaft 1 is inserted between the lower recesses of the main girder L1 in the cable rack L, and the mounting screws 5 inserted from the outside of the lower recesses are screwed into the screw holes 3 at the ends of the roller shafts 1. At this time, the roller 6 is set slightly higher than the upper surface of the child beam L2 of the cable rack L.

The cable W is placed on the roller 6 of this invented wire drawing roller arranged in this way,
The cables W are drawn into the cable rack L using the rotation of the roller 6 and are passed through the cables one after another.

After the wire threading work is completed, the wire drawing roller of this invention can be removed from inside the cable rack L by removing the mounting screw 5 from the roller shaft 1 and releasing the fixing means 2, and the cable W after wire threading is removed from the cable rack L. The rack L is left as it is on the child beam L2.

(Effect of the invention) Therefore, in the cable rack L where the cable W is to be routed, by installing and fixing it between the master girders L1, the rollers 6 are arranged in the cable rack L to facilitate the wire passing. Can be set.

At this time, the main spar L1 is formed by vertically connecting recesses having a substantially U-shaped cross section, and the roller shaft 1 is fitted into the lower recess of the main spar L1 and penetrated from the outside of the lower recess. Since the screw 5 is screwed into the screw hole 3 formed at the end of the roller shaft 1, the work of fixing the roller shaft 1 is extremely simple, and anyone can complete the work in a short time. In addition, since the roller shaft 1 is fitted into the lower recess of the main spar L1 and fixed with screws, the roller shaft 1 will not come off from the main spar L1 even if vibration or impact occurs when the cable W moves. do not have. Furthermore, since the roller shaft 1, which supports the roller 6, is directly fitted into the lower recess of the main girder L1 and fixed with screws, it can be easily fixed even if strong vibrations or shocks occur when the cable W moves. , the mounting position of the roller shaft 1 will not shift.

On the other hand, the fixed position of the roller shaft 1 is the main girder L.
1, and even if the upper surface of the roller 6 becomes slightly higher than the upper surface of the child beam L2, it is prevented from being at an extremely high position. By doing so, the cable W to be led in and routed can be smoothly routed without creating a level difference.

Since the cable W is routed directly within the cable rack L, the work can be carried out extremely easily, and even when the cable W is placed on the roller 6, there is no need to bind the cable W. No inconvenience.

In addition, when removing it, move the roller shaft 1 to the main girder L.
All you have to do is release the fixing means 2 that is fixed to 1.
The removal work is easy, such as bringing it below the cable rack L or lifting it from between the cables W after wiring. At this time, it is not necessary to move or remove the cable W that has been passed through the cable rack L from above the roller 6, and the cable W is simply removed, and the cable W is left in the predetermined position within the cable rack L, and the cable W is kept in the wire storage state. becomes.

Further, since the roller 6 is made of synthetic resin and is thicker at the center than at the outer periphery, and the shape of the roller 6 is extremely simple, a large amount of products can be manufactured in a short period of time. Moreover, since the roller 6 is formed of synthetic resin, even if the roller 6 and the cable W come into strong contact, the cable W will not be damaged. Therefore, the trouble of applying lubricating oil to the roller 6 can be saved. Additionally, the use of synthetic resin reduces the overall weight.

In addition, since the present invention has a plurality of rollers 6 arranged in a row on the roller shaft 1, it has an extremely simple structure, has excellent portability, and is easy to handle, greatly improving the efficiency of wiring work. can.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a perspective view of the device in use, and FIG. 2 is a partially cutaway front view. L...Cable rack, L1...Main girder, L2...
... Child girder, W ... Cable, 1 ... Roller shaft, 2
...Fixing means, 3...Screw hole, 4...Cover plate, 5...
...Mounting screw, 6...Roller.

Claims (1)

[Scope of utility model registration request] The roller shaft is installed between the main girders of the cable rack through which the cable is drawn in, and the central part is made of synthetic resin, which is thicker than the outer peripheral part.
It comprises a plurality of disc-shaped wire passing rollers that are freely rotatable and arranged in a row on a roller shaft, and a fixing means that detachably fixes the roller shaft to a main girder, and the main girder has a substantially U-shaped cross section. The fixing means is formed by connecting the recesses in the vertical direction, and the fixing means is formed by fitting the roller shaft into the lower recess of the parent girder and forming a mounting screw at the end of the roller shaft, which is penetrated from the outside of the lower recess. A wire extension roller for cable racks that is screwed into a screw hole.