JP2884065B2 - Child girder for receiving wiring and piping material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring / piping material receiving member installed between a parent girder of a wiring / piping material receiving member such as a cable rack for drawing in and passing wiring such as cables. The present invention relates to a girder, and more particularly to a sub-girder for a wiring and piping material receiving device, which reduces a drawing force when a wiring and piping material is pulled in.

[0002]

2. Description of the Related Art The technique disclosed in Japanese Utility Model Laid-Open Publication No. Sho 62-172210 is disclosed as a conventional child girder for this type of wiring and piping material receiver. In FIG. 9 and FIG.
The piping material receiver 1 is composed of a main girder 2 formed of a plate material such as aluminum having a constant cross-sectional shape, a plurality of sub-girder 3 and a plurality of extension rollers 10 laid between the main girder 2,
The whole is in the form of a ladder. The child girders 3 are provided at predetermined intervals in the length direction of the wiring / piping material receiver 1, and are made of an aluminum material or the like having a constant cross section. The extension roller 10 is disposed at an appropriate position between the child beam 3 and a roller shaft 11 laid between the parent beams 2 and a disk rotatably attached to the roller shaft 11. The roller shaft 11 is attached to the main girder 2 using an attachment screw 6 on a lid 11a provided at an end thereof. W is a cable placed on the rotating roller 12.

[0003] In this conventional wiring and piping material receiving device 1, since the rotating roller 12 rotates about the roller shaft 11,
At the time of wiring work, the drawing force of drawing the wiring or piping material such as the cable W drawn into the rotating roller 12 is reduced, and the work can be performed easily.

[0004]

The cable W
In order to reduce the pull-in force, it is preferable that a large number of the extension rollers 10 are provided between the sub-beams 3.
However, arranging a large number of the extension rollers 10 only for reducing the drawing force is wasteful as a member, and the economic burden is large. Therefore, it is conceivable to reduce the costs of the sub-girder 3 and the entire extension roller 10 by using the extension roller 10 also as the sub-girder 3.

However, since the wiring / piping material receiver 1 is constructed such that the roller shaft 11 inserted through the rotating roller 12 of the extension roller 10 is supported between the parent girders 2, the roller shaft 11 is It is formed of a small-diameter cylinder or round bar to support the rotating roller 12. Therefore,
In order to use the extension roller 10 as the sub-girder 3, the mounting strength is small, so that the number of wires or piping materials to be passed, such as the cable W, to be drawn in is restricted. For this reason, by increasing the mounting strength, a child girder that also acts as a drawing roller for reducing the pulling force of the cable W appears.

Accordingly, the present invention provides a wiring / wiring which can secure a required mounting strength and reduce the drawing force of wiring and piping materials.
It is an object of the present invention to provide a child girder for a pipe material receiving member.

[0007]

According to a first aspect of the present invention, there is provided a child girder for a wiring and piping material receiving member, which is provided between the parent girders of the wiring and piping material receiving member and has a support portion opened upward. And a rotating roller that rotates while being accommodated in the supporting portion. The supporting member supports the rotating roller with a part thereof protruding from an opening of the supporting portion.

According to a second aspect of the present invention, the rotary roller is composed of a plurality of divided bodies.

According to a third aspect of the present invention, there is provided a child girder for receiving a wiring / piping material, wherein the rotating roller is directly mounted on a support portion of the support.

[0010] According to a fourth aspect of the present invention, there is provided a child girder for receiving a wiring / piping material, wherein a dust discharge groove is formed along the longitudinal direction on the inner surface of the support portion of the support.

According to a fifth aspect of the present invention, in the child girder for receiving a wiring / piping material, the rotary roller is pivoted between a plurality of support plates mounted on a support portion of the support. .

According to a sixth aspect of the present invention, in the child girder for receiving a wiring / piping material, the rotating roller is accommodated in the supporting portion so as not to be able to be removed from its upper opening.

According to a seventh aspect of the present invention, in the child girder for receiving a wiring / piping material, the rotating roller is inserted from a side opening of the support portion and is brought into contact with a peripheral edge of an upper opening of the support portion. It was housed irremovably.

[0014]

According to the first aspect, the rotating roller rotates while being accommodated in the support portion of the support and is supported by the support. Therefore, the support that supports the load applied to the rotary roller has a mounting strength. It can be formed in any shape without being limited to the shape of a small-diameter cylinder or round bar having a small diameter. For this reason, the support can have a strong structure,
As a result, the mounting strength as a child girder increases. And
The pulling force of the wiring and piping material is reduced by the rotating roller.

In the second aspect, since the rotating roller is composed of a plurality of divided bodies, it is suitable for drawing in a plurality of wiring and piping materials.

In the third aspect, since the rotating roller is directly mounted on the support portion of the support, the structure of the child beam is simplified.

According to the fourth aspect, the dust adhered between the rotating roller and the inner surface of the supporting portion is extruded by the rotation of the rotating roller and falls into the dust discharging groove to be removed. The rotation is smoothly performed without the rotation operation being hindered by dust.

According to the fifth aspect, since the rotating roller is pivoted between the plurality of support plates placed on the supporting portion of the support, the rotating operation of the rotating roller becomes smoother.

According to the present invention, since the rotating roller is accommodated in the supporting portion so as not to be able to be removed from its upper opening, the wire / pipe receiving member is tilted and inverted during transportation or wiring / pipe construction. Also, the rotating roller does not come off.

In the present invention, the rotary roller is inserted from the side opening of the support portion and is in contact with the peripheral edge of the upper opening of the support portion and is housed undetachably.
The rotation roller can be easily accommodated in the support portion, and the child girder has a simple and compact configuration.

[0021]

【Example】

<First Embodiment> A first embodiment of the present invention will be described below with reference to FIGS. In the figure, a wiring / piping material receiver 1 is composed of a main girder 2 formed of a plate material such as aluminum having a constant cross-sectional shape, and a plurality of sub-girder 3 erected at predetermined intervals between the main girder 2. Have been. The sub-girder 3 has a plurality of rotating rollers 4 accommodated and supported in a substantially semi-cylindrical supporting portion 5 a formed on the support 5, and a parent girder is attached to a screw mounting portion 5 b provided on the support 5. The main girder 2 is attached to a side surface of the main girder 2 by attaching a mounting screw 6 penetrating the main girder 2. W is a cable placed on the rotating roller 4.

Here, the support 5 has a constant cross-sectional shape and can be formed easily by extrusion of synthetic resin, aluminum or the like. The support 5a of the support 5 has the same diameter as or slightly larger than the diameter of the rotary roller 4 so that the rotary roller 4 can rotate smoothly. The edges 5c on both sides of the substantially semi-cylindrical shape of the supporting portion 5a extend a predetermined length above a horizontal line passing through the center of the rotary roller 4 along the outer peripheral surface of the rotary roller 4, and -When the piping material receiver 1 is turned over, the rotating roller 4 does not fly outward from the upper opening of the support portion 5a. With such a structure, the rotation roller 4 is accommodated in the support 5 by sequentially inserting it from the left and right opening surfaces of the support portion 5a. The support 5
Is not limited to the shape shown in the figure. For example, the screw mounting portions 5b may be provided on both left and right sides of the support portion 5a.
a may be formed as long as it can be attached to the main girder 2 at both ends.

On the other hand, the rotating roller 4 itself rotates within the supporting portion 5a without being attached to the shaft, and a part of the rotating roller 4 projects from the upper opening of the supporting portion 5a of the support 5,
The mounted cable W is directly supported. The rotating roller 4 has a cylindrical or thin cylindrical shape using a synthetic resin, a foamed resin or the like. When the rotating roller 4 has a thin cylindrical shape, a lightweight metal such as aluminum can be used. In short, any material and internal shape can be used as long as they rotate smoothly in the support portion 5a, have a predetermined mounting strength with respect to the cable W, and are lightweight.

Next, the operation of the child girder of the embodiment constructed as described above will be described. When the cable W is drawn into the wiring / piping material receiver 1, the cable W is placed on the rotating roller 4. Then, if the cable W is pulled in, the rotating roller 4 rotates while being accommodated in the support portion 5a of the support 5, so that the pulling force is reduced. Here, the rotating roller 4
Is supported by the support 5, so that the load applied to the rotating roller 4 is not supported by the rotating roller 4 but by the support 5. That is, as in the conventional example, a small-diameter cylinder serving as the roller shaft 11 for rotating the rotating roller 12,
The load at the time of pulling in the cable W is not supported by a member such as a round bar or the like, but is supported by a support 5 that accommodates the rotating roller 4. As a result, since the support 5 can be formed in an arbitrary shape, for example, the support 5 can have a high-strength frame structure as shown in FIG. Therefore, the mounting strength of the entire sub-spar 3 is increased. Furthermore, since the rotating roller 4 is directly mounted on the support portion 5a of the support 5, the structure of the child beam 3 is simplified.

As described above, the child girder for receiving the wiring / piping material of the present embodiment can secure the required mounting strength, so that the cable girder can be mounted without increasing the number of mounting of the child girder 3. It is possible to reduce the pulling force of wiring and piping materials such as W.
As a result, the cost of the child girder 3 and thus the wiring / piping material receiver 1 can be reduced. In addition, the rotating roller 4 may have different lengths of the respective divided bodies, or
The sub-spar 3 may be integrated over the entire length.

By the way, as shown in FIG. 3, a dust discharge groove 5d communicating along the longitudinal direction may be formed in the support portion 5a of the support 5 of the first embodiment. In this case, even if dust adheres between the rotating roller 4 and the inner surface of the support portion 5a, the dust is extruded by the rotation of the rotating roller 4,
Since the rotary roller 4 drops into the dust discharge groove 5d and is removed, the rotating operation of the rotary roller 4 is not hindered. The dust accumulated in the dust ejection groove 5d can be easily removed from the support portion 5a by air wiping, brush wiping, or the like.

Further, in the support 5 of the above embodiment, as shown in FIG. 3, the corner portion 5e may have a curved surface. In this case, the pull-in force of the wiring and the piping material can be further reduced.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. In the figure, a child girder 3 is a slender box-shaped support 5 which is entirely open upward.
A plurality of rotating rollers 4 project partly upward and are rotatably accommodated therein. On both sides of the upper opening of the elongated box-shaped support portion 5a of the support body 5, an extension 5f projecting at right angles into the support portion 5a is provided in the support portion 5a so that the accommodated rotary roller 4 does not protrude outward. The support 3a is provided over the entire length of the girder 3. Openings at both ends of the support 5a are closed by support plates 7, and screw support portions 5b are formed on both left and right sides of the support 5a. And the support 5
A support plate 7 made of a plurality of plate members having a predetermined width is inserted into the support portion 5a at a predetermined interval from a side opening and accommodated in the center of both side surfaces of the support plate 7a. And a columnar shaft portion 7a protruding therefrom is provided integrally. On the other hand, the rotary roller 4 has a shaft hole 4a which is rotatably engaged with the shaft portion 7a of the support plate 7 at the center of both sides of the rotary roller 4 of the first embodiment. Therefore, the rotation roller 4 can be smoothly rotated by being pivotally supported by the shaft portion 7a of the support plate 7.

In the second embodiment, since the rotating roller 4 is supported by the support portion 5a of the support 5 and is rotatably accommodated, the same operation and effect as those of the first embodiment can be expected. , The rotating roller 4 has a shaft portion 4a and a support plate 7
, So that it can rotate more smoothly.

In this second embodiment, as shown in FIG. 7, the rotary roller 4 is provided with a shaft hole 7 on the support plate 7 side of the support 5.
b, and a shaft 4 protruding outward on both sides of the rotating roller 4
The rotating roller 4 may be pivotally supported by providing b. Also in this case, similarly to the second embodiment, the rotating roller 4 can smoothly rotate around the shaft 4b.

In this embodiment, the rotating roller 4 is supported by the shaft portion 4b, but is different from the conventional example in which the rotating roller 4 is supported by a single roller shaft 11 as in the conventional example. The support 5 supports the load of the cable W applied to each shaft portion 4b, and the support 5 can have a structure having a large bending strength. The mounting strength is the same as that of the conventional wire drawing roller 10.
It is much larger than.

In the second embodiment as well, similarly to the first embodiment, by making the corners of the support 5 a curved surface, it is possible to further reduce the pull-in force of the wiring and piping materials.

In each of the above embodiments, the width of the opening formed between the edges 5c on both sides of the support 5 of the sub-spar 3 is made smaller than the diameter of the rotary roller 4 so that the contact with the edge 5c is made. The contact prevents the rotation roller 4 from withdrawing above, but the prevention of the rotation roller 4 from being pulled out is not limited to this means. For example, as shown in FIG.
c, the width of the opening is larger than the diameter of the rotating roller 4. However, as in the second embodiment, a support plate 7 is provided between the rotating rollers 4, and the rotating hole of the rotating roller 4 is formed by a shaft hole 7b. The shaft 4b of the rotary roller 4 is prevented from moving upward by the shaft hole 7b of the support plate 7, and the rotary roose 4 is pulled out of the support 5 upward. Never do.

Here, the support plate 7 has an engagement protrusion 7 on the bottom.
c is provided integrally with the supporting member 5 from the side of the supporting member 5.
a into the support portion 5 of the support 5
a engages with a dovetail groove 5g formed over the entire length and can be attached to the support 5. On the other hand, since the diameter of the rotary roller 4 is smaller than the opening width above the support 5, the rotary roller 4 can be inserted into the support portion 5 a not only from the side of the support 5 but also from above. After the support plate 7 is inserted into the support portion 5a, the child girder 3 is attached to the main girder 2 to prevent the support girder from coming off sideways. That is, the support 5 may be any support as long as it can prevent the rotation roller 4 from being pulled out. The child girder for the wiring / piping material receiver shown in FIG. 8 corresponds to the sixth aspect.

Further, in each of the above embodiments, the sub-girder constituting the wiring / piping material receiver 1 is all constituted by the sub-girder 3 provided with the rotating roller 4 according to the present embodiment. A part of 3 may be replaced with a normal sub-girder without the rotating roller 4, and both may be used in combination.

Further, in each of the above-described embodiments, the case where the cable W is pulled in is shown.
The present invention is not limited to this, and is similarly applied to the case where other wiring and piping materials are drawn.

In the child girder for receiving the wiring and piping material of the present invention, flocking is implanted on at least the upper surface of the support to which a cable or the like drawn into the wiring and piping material receiving device can come into contact. Or by sticking a non-woven fabric with planted hair, or by sticking a slippery resin tape such as Teflon (trade name) on the top surface, or by sticking the Teflon or the like on the surface. By providing various draw-in resistance reducing layers, such as applying a slippery resin or applying a coating process by a chemical treatment, the cable or the like can be laid on the wiring / pipe receiving member with a smaller draw-in force.

The pull-in resistance reducing layer does not have a rotating roller and can be applied to a conventional child girder that is simply laid in a ladder shape between parent girders. By providing the drawing resistance reducing layer on at least the upper surface of the conventional child girder that can be brought into contact with a cable or the like to be drawn in, the cable or the like is drawn and laid with a small drawing force on the wiring / pipe receiving member. Is possible.

[0039]

As described above, the wiring and wiring according to the first aspect of the present invention are described above.
The child girder for the pipe material receiving member is configured so that the rotating roller rotates while being accommodated in the support portion of the support, and is supported by the support, so that the support has a large strength structure. By doing so, the mounting strength as a child girder can be increased, and the pull-in force of wiring and piping materials can be reduced.

In the child girder for receiving the wiring and piping material according to the second aspect of the invention, since the rotating roller is composed of a plurality of divided bodies, the rotating roller can be particularly smoothly rotated.

In the child girder of the third aspect of the present invention, the structure of the child girder is simplified since the rotating roller is directly mounted on the supporting portion of the support.

According to the fourth aspect of the present invention, dust attached between the rotating roller and the inner surface of the supporting portion is pushed out by the rotation of the rotating roller, and the dust in the dust discharging groove is formed. As a result, the rotating roller can be prevented from being hindered from rotating by the dust.

According to the fifth aspect of the present invention, since the rotating roller is pivoted between a plurality of supporting plates placed on the supporting portion of the supporting member, the child girder for receiving the wiring and piping material is pivotally mounted between the supporting plates. The rotation operation becomes smoother.

According to the sixth aspect of the present invention, since the rotating roller is accommodated in the support portion so that it cannot be removed from its upper opening, the child girder for receiving the wiring and piping material can be used during transportation or wiring and piping work. Even if the wiring / piping material receiver is tilted or turned over, the rotation roller can be prevented from coming off.

According to the seventh aspect of the present invention, in the child girder for receiving the wiring and piping material, the rotating roller is inserted from the side opening of the support portion, and comes into contact with the peripheral edge of the upper opening of the support portion to be removed. Since the roller is improperly accommodated, it is easy to accommodate the rotating roller in the support portion, and the child girder can be configured simply and compactly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a child girder for receiving a wiring and piping material according to a first embodiment of the present invention.

FIG. 2 is a front view of a main part of FIG. 1;

FIG. 3 is another wiring diagram according to the first embodiment of the present invention.
It is a perspective view showing the child girder for piping material receiving.

FIG. 4 is a perspective view showing a child girder for receiving a wiring and piping material according to a second embodiment of the present invention.

FIG. 5 is a front view of a main part of FIG. 4;

FIG. 6 is a longitudinal sectional view of the child girder of FIG.

FIG. 7 is a longitudinal sectional view showing another child girder for receiving a wiring and piping material of the second embodiment.

FIG. 8 is a perspective view showing still another child girder for receiving a wiring and piping material according to the second embodiment.

FIG. 9 is a perspective view showing a conventional wiring and piping material receiver.

FIG. 10 is a front view of a main part showing a drawing roller of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wiring and piping material receiver 2 Main girder 3 Child girder 4 Rotary roller 5 Supporter 5a Supporter 5d Dust discharge groove 7 Support plate

Claims (7)

(57) [Claims] Claims: 1. A wiring / piping material receiving device is provided between a parent girder of a receiving member,
A support provided with a support that opens upward; and a rotating roller that rotates while being accommodated in the support. The support has a portion of the support that protrudes from the opening of the support. A child girder for receiving wiring and piping material, characterized by being supported in a state. 2. The child girder according to claim 1, wherein the rotating roller comprises a plurality of divided bodies. 3. The child girder according to claim 1, wherein the rotary roller is directly mounted on a support portion of the support. 4. The wiring according to claim 1, wherein a dust discharge groove is formed on an inner surface of the support portion of the support along a longitudinal direction.・ Spar girder for receiving pipe material. 5. The wiring and piping material receiving device according to claim 2, wherein the rotating roller is pivoted between a plurality of support plates mounted on a support portion of the support. Child digits. 6. The wiring / piping material receiving device according to claim 1, wherein the rotating roller is irremovably housed from an upper opening of the support portion. Child digits for 7. The support portion of the support body is opened to the side, and the rotating roller is inserted from the side opening of the support portion and is accommodated in the support portion, and the rotation roller is provided at an upper opening of the support portion. 7. The child girder for a wiring and piping material receiving device according to claim 6, wherein the child girder is in contact with the peripheral edge and cannot be removed.