JPH047614Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a wire extension roller for cable racks, which is a ladder-shaped cable that is used to lay and store a large number of cables together in buildings, factories, and other architectural structures. It is used to route cables inside racks, and even long cables with large diameters can be routed smoothly and easily.
This invention relates to a wire extension roller for cable racks that enables wire running work to be carried out quickly, and in particular, allows for quick adaptation and easy installation even when the heights of main girders in cable racks vary. .

(Prior Art) Various cables have traditionally been wired in buildings and factories, and this has been done by storing them 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, and various structures have been proposed as wire stretching rollers for this purpose. has been done. For example, Akira Jitsukai
There are some methods according to Japanese Utility Model Publication No. 57-175523, Japanese Utility Model Application Publication No. 58-97919, Japanese Utility Model Publication No. 58-25689, etc., and these are all designed to run cables by being fixed inside a cable rack. After the wiring is completed, the roller must be moved to a rack at a predetermined position where it is to be placed and stored, and furthermore, the roller itself cannot be removed until after the wire has been moved. There is also a system that improves the rotational performance of the rollers during wire threading by arranging a large number of rotatable small rolls in a row (for example, Japanese Utility Model Application Publication No. 58-66812), but this also It was troublesome to remove it after the wiring work was completed.

Therefore, in view of the various difficulties that existed in the past as mentioned above, the present applicant has filed a practical application in 1983 in order to solve these problems.
A wire drawing roller for cable racks was proposed as specification No. 71610. This consists of a support base that is placed in contact with the bottom of the cable rack from below, and an engagement pedestal that is placed and fixed on one end of the support base, which engages the upper edge of one of the main girders in the cable rack. A handle is pivotably supported on a clamp pedestal fixed to the other end of the support base, and a cable rack is attached by swinging the handle. A clamp fitting that connects a handle with a clamp part that can be freely engaged and detached from the upper edge of the other main girder, and a roller pedestal that is fixed on the support base has multiple rotatable disc-shaped rollers for wire passing around the shaft. It has a supporting roller metal fitting.

According to this, by installing and setting the cable rack from below and wiring the cable directly inside the cable rack, it is easy to remove the cable after wiring work is completed, and it is possible to simply remove it. The cable was placed in a predetermined position within the cable rack, eliminating the need for moving the cable again and greatly improving work efficiency.

(Problem to be solved by the invention) However, the above-mentioned problem proposed by the applicant is
The engaging portion of the engaging metal fitting is formed to have a constant height, and there is a drawback that this method cannot be applied to cases where the height of the main girder in the cable rack varies.

That is, in order to vary the wire passage volume depending on the number of cables to be wired, shallow or deep grooved cable racks are available, and these are constructed with different heights of the main girders. Therefore, if it is made to correspond to a shallow groove type main girder, the height will be insufficient for a deep groove type one, and conversely, if it is made to correspond to a deep groove type main girder, it will be too high for a shallow groove type one. In any case, reliable engagement was difficult.

Therefore, the present applicant has proposed a wire extension roller for cable racks that can be applied even when the height of the main girder in the cable rack is different (Utility Application No. 45884/1984), but this is because the swinging piece and Since the engaging piece is connected to the engaging piece via a connecting bolt so that the length can be adjusted freely, there are disadvantages such as the work of changing the length adjustment is troublesome and the work is relatively time-consuming. Also, when removing the connecting bolt,
The engaging piece easily separates from the swinging piece, making it easy for the engaging piece to fall, resulting in poor work efficiency, and
There were drawbacks such as increased danger during work.

Therefore, this idea is a further improvement on the previously proposed wire rolling roller, and it adopts an engaging part structure that can be easily adjusted to accommodate different parent girder heights. Of course, changes such as length adjustment can be done with one touch (easily and quickly), and parts do not fall easily, are safe, easy to handle, and have good work efficiency. It was devised for the purpose of providing wire extension rollers for cable racks.

(Means for solving the problem) Therefore, in order to solve the above problems,
In this invention, there is a support base 1 that is placed in contact with the cable rack L from below, and an engaging portion that engages with the upper edge of one of the main beams L1 in the cable rack L at one end of the support base 1. A clamp part 33 is provided on the other end of the support base 1 and is capable of being freely engaged with and detached from the upper edge of the other main beam L1 in the cable rack L by swinging the handle 32. A clamp fitting 30 connected to a handle 32 and a support base 1
In the wire extension roller for the cable rack L, which has a roller fitting 40 that pivotally supports a plurality of rotatable disk-shaped rollers 45 for wire passage on a roller pedestal 41 fixed thereto, the engagement of the engagement fitting 10 is An engagement base 11 whose joint portion is fixed to the support base 1
A substantially cylindrical base rod 18 is pivotably supported on the base rod 18, and its base end portion is slidably fitted into the base rod 18, and a hook portion at the tip thereof is latched to the upper edge of the main beam L1. and a positioning means 20 for positioning and fixing the hook rod 19 pulled out from the base rod 18 by a predetermined length to the base rod 18.
It is composed of a plurality of positioning holes 21 that are appropriately drilled in the positioning holes 21, and a positioning pin 22 that can be inserted into the positioning holes 21, and the height position adjustment of the engagement with the upper edge of the main girder L1 by the engagement fitting 10 is performed. We adopted a means to configure the system so that it can be performed freely.

(Function) In the wire drawing roller for a cable rack of this invention, the support base 1 is disposed on the bottom surface of the cable rack L in a state perpendicular to its length direction from below, and the engaging fittings 10
is engaged with and supported by one of the main girders L1 in the cable rack L.

At this time, the engagement portion of the engagement tool 10 is expanded and contracted to adjust the engagement height in accordance with the height of the master beam L1. That is, the base end portion of the hook rod 19 is pulled out for a predetermined length from inside the substantially cylindrical base rod 18, and the positioning hole 21 of the base rod 18 and the positioning hole 21 of the hook rod 19 are penetrated by the positioning pin 22. The hook rod 19 is positioned and fixed to the base rod 18. The proximal end portion of the hook rod 19 is accommodated within the base rod 18, and its retained state is maintained.

Next, in the clamp fitting located at the other main spar L1, the clamp part 33, which was set free by operating the handle 32, is engaged with the upper edge of the other main spar L1, and by swinging the handle 32, the clamp part 33 is set free. The clamp part 33 is firmly gripped by the main girder L1.

By doing this, the roller fittings 40 fixed on the support base are installed in a position inside the cable rack L, and the roller fittings 40 are installed at appropriate intervals on the passageway in the length direction of the cable rack L. They are set in multiple pieces with different widths.

Next, the cable W to be wired is placed on the roller 45 of the roller fitting 40, and the wire threading operation is performed using the rotating action of the roller 45.

After completing the wiring work by the rotating action of the roller 45 in this manner, the clamp portion 33 is released from the other main spar L1 by operating the handle 32 again, and the engaging fitting 10 is moved from the one main spar L1. By removing it, the wire drawing roller of this invention can be removed from the cable rack L. The cable W after being wired is left as it is on the slave girder L2 of the cable rack L.

(Embodiments) Hereinafter, embodiments of this invention will be described with reference to the drawings.

The reference numeral 1 shown in the figure is a support base, and this support base 1 is a substantially ladder-shaped cable made up of child girders L2 installed at predetermined intervals between the left and right master girders L1 facing each other, as shown in the figure. Rack L
The engaging edges 2 are arranged to abut orthogonally to the bottom surface of the body from below, and the engaging edges 2 are bent inwardly.
It is formed of a lip channel steel material having a groove-shaped cross section at the opening edge of the main body. Its length is longer than the width of the cable rack L, and is sufficient to allow the engagement fittings 10 and clamp fittings 30, which will be described later, to be disposed outside the main girder L1.
Usually, the opening edge is brought into contact with the bottom surface.

This support base 1 includes a cable rack L.
Engagement metal fittings 10 and clamp metal fittings 3 for attaching to
0, and a roller fitting 40 for passing the cable W, which is detachably attached and whose position can be adjusted freely.
is located outside the main beam L1 of the cable rack L, and the roller fitting 40 is located inside the main beam L1.

The engagement fitting 10 includes an engagement pedestal 11 that is placed and fixed on one end of the support base 1, and an engagement portion 17 that engages with the upper edge of one of the main girders L1 in the cable rack L so as to be swingable. The engaging portion 17 consists of
It is formed to be extendable and contractible so that the height position of engagement with the upper edge of the main girder L1 can be adjusted. That is, the engagement fitting 10 has a fixed piece 15 that abuts on the outer surface of the main girder L1.
A fixing bolt 1 inserted through an engagement base 11 having a
2 is screwed to a nut plate 13 that engages with the inner edge of the engagement edge 2, thereby fixing the engagement base 11 itself on the support base 1, and a pair of left and right shafts erected on the engagement base 11. A swing pin 16 is horizontally suspended between the branch pieces 14, and a hook-shaped engaging portion 17 is swingably supported by the swing pin 16.

The engaging portion 17 includes a substantially cylindrical base rod 18 that is swingably supported by a swing pin 16;
A hook rod 19 whose base end portion is slidably inserted into the base rod 18, and a positioning means 20 for positioning and fixing the hook rod 19 pulled out from the base rod 18 by a predetermined length to the base rod 18. Become. As shown in the figure, the tip of the hook rod 19 is bent into a hook shape so as to be hooked onto the upper edge of the main girder L1. In addition, both the base rod 18 and the hook rod 19 are formed in a cylindrical shape,
Either one may be made solid.

Further, the positioning means 20 includes at least one positioning pin inserted into one of the base rod 18 and the hook rod 19, and a plurality of positioning pins inserted into the other of the base rods 18 and 19 so as to correspond to positioning holes 21 drilled in the other. 22. In the illustration,
One positioning hole 21 in the base rod 18, one positioning hole 21 in the hook rod 1
9 has a plurality of positioning holes 21 drilled at predetermined intervals, and the positioning pin 22 is formed so that it will not be easily pulled out of the positioning hole 21 due to unexpected external force, etc. The hole 21 is formed so that it can be easily inserted, and is formed, for example, in the shape of a rod having a large diameter head.

The clamp fitting 30 attached to the other end of the support base 1 for gripping the other main girder L1 in the cable rack L has a handle 3 attached to a clamp pedestal 31 fixed to the other end of the support base 1.
2 is slidably supported on the shaft, and a clamp portion 33 is connected to the handle 32 so that it can be freely engaged and detached from the upper end edge of the other main beam L1 by swinging the handle 32.

Of course, such a clamp fitting 30 is not limited to the illustrated example, and various shapes and structures can be changed. However, by configuring the swinging operation of the handle 32 to be performed on the side of the support base 1, the position at which the clamp fitting 30 itself is fixed to the support base 1 is in the longitudinal direction of the support base 1. Even if the movement is adjusted arbitrarily, it can be used without any inconvenience.

Furthermore, a roller fitting 40 for passing the cable W is mounted on the support base 1 so as to be located within the cable rack L when it is mounted on the cable rack L, and is fixed on the support base 1. A plurality of rotatable disk-shaped rollers 45 for wire passing are pivotally supported on a roller pedestal 41. That is, as shown in the figure, this roller fitting 40 movably fixes to the support base 1 a roller pedestal 41 with a groove-shaped cross section that straddles the support base 1 via a screw fixing means 42. Pivot support pieces 43 erected at both ends of the seat 41
A roller shaft 44 is mounted between them, and a plurality of rollers 45 are rotatably fitted onto this roller shaft 44. The screw fixing means 42 shown in the figure is a long bolt inserted between both side walls of the roller pedestal 41 at a position below the support base 1;
The support base 1 is fixed by clamping the support base 1 with the clamping force of both the long bolt and the nut, and the fixing position can be adjusted by loosening the long bolt and the nut. By mounting and fixing only this roller fitting 40 to the sub-girder L2, it is also possible to use it alone.

The roller shaft 44 is mounted on the roller pedestal 41 in a direction perpendicular to the direction in which the cable W runs, and the roller shaft 44 itself is rotatable relative to the shaft support piece 43, thereby controlling the rotation of the roller 45. It also makes the operation even smoother. Moreover, the roller 45 is
Since each of the rows of cables rotates separately, which makes the cable W run extremely smoothly, the outer peripheral surface of the roller 45, which is the wire passing surface, has a slight gap between each one, and therefore, As shown in FIG. 2, the center portion of the roller 45 is formed to be thicker on the front and back sides than the outer peripheral portion.

Furthermore, by forming the roller 45 from a synthetic resin such as polyacetal resin, it is possible to eliminate the need for lubricating oil, reduce the weight, and facilitate handling.

Further, the roller fitting 40 may be provided with a vertical guide roller 50 for changing the direction of the cable W from side to side, for example.

Next, to explain the use of this, Figures 2 and 3
As shown in the figure, the support base 1 is placed on the bottom of the cable rack L in a state perpendicular to its length direction from below, and the engagement fittings 10 are used to connect one of the main girders L1 in the cable rack L.
Then, in the clamp fitting 30 positioned at the other main girder L1 part, the clamp part 33 was made free by operating the handle 32.
is brought into engagement position with the upper edge of the other master spar L1, and by swinging the handle 32, the clamp portion 33 is firmly gripped by the master spar L1. By doing this,
The roller fittings 40 fixed on the support base 1 are installed while being positioned inside the cable rack L, and this is done by setting an appropriate interval width on the passageway in the length direction of the cable rack L. They are arranged and set in multiple numbers.

At this time, the engagement portion 17 of the engagement fitting 10 is expanded and contracted to adjust its engagement height in accordance with the height of the master beam L1.

Next, the cable W to be wired is placed on the roller 45 of the roller fitting 40, and the roller 4
5 is used to carry out wire threading work, and when the wire threading path bends to the side, the vertical guide roller 5 attached to the roller fitting 40 is used.
It is guided to bend in the left and right direction by 0. After completing the wiring work by the rotating action of the roller 45 in this way, the clamp part 39 is released from the other main spar L1 by operating the handle 37 again, and the engaging fitting 10 is moved from the one main spar L1. By removing it, the invented wire stretching roller can be removed from the cable rack L, and the cable W after being wired remains on the child girder L2 of the cable rack L as it is.

(Effect of the invention) Therefore, according to this invention, by attaching the roller 45 to the bottom of the cable rack L through which the cable W is to be routed from below, the roller 45 for smoothing the wire passage is attached to the cable rack L. Since the cable W can be placed inside the cable rack L and the cable W can be wired directly inside the cable rack L, the work can be carried out extremely easily. Moreover, there is no problem in binding the cable W even when it is placed on the roller 45, and since it is brought below the cable rack L when it is removed, it is easy to run the cable inside the cable rack L. Roller 45 of cable W
There is no need to move or remove it from above, just remove it, and the cable W will remain in the predetermined position within the cable rack L, and the cable will be in the wiring storage state.

That is, the roller fitting 4 for passing the cable W
0 is fixed on the support base 1 which is placed in contact with the bottom surface of the cable rack L from below, so that the support base 1 is attached to the cable rack L.
The setting of the support base 1 is completed by simply placing it on the cable rack L, and when the support base 1 is placed on the cable rack L, the engagement fitting 10 fixed to one end of the support base 1 is moved by the engagement part 17 of the support base 1. One parent digit L
1, and the clamp fitting 30 fixed to the other end of the support base 1 grips the upper edge of the other main spar L1 with its clamp part 33, thereby ensuring secure grip. It is fixed.

For attachment and detachment to the cable rack L, the engagement part 17 of the engagement fitting 10 must be able to swing freely, and the clamp part 33 of the clamp fitting 30 should be able to be engaged and removed by swinging the handle 32. This can be easily done with the following steps, and even if there is a slight change in the width of the cable rack L, it can be set without difficulty.

In particular, this invention makes the engaging portion of the engaging tool 10
A substantially cylindrical base rod 18 is swingably supported on an engagement base 11 fixed to the support base 1, and its base end portion is slidably fitted into the base rod 18, and its tip end is slidably fitted into the base rod 18. It is composed of a hook rod 19 whose hook portion is hooked to the upper edge of the main girder L1, and a positioning means 20 for positioning and fixing the hook rod 19 pulled out from the base rod 18 by a predetermined length to the base rod 18. The positioning means 20 is connected to the base rod 18 or the hook rod 19.
It is composed of a plurality of positioning holes 21 that are opened as appropriate, and a positioning pin 22 that can be inserted into the positioning holes 21, and the position of the engagement height of the engagement fitting 10 with respect to the edge of the main girder L1 can be adjusted. Since it is configured so that it can be done freely, the height position of engagement with the main girder L1 can be adjusted.
Even if the height of the main girder L1 in the cable rack L to which the wire drawing roller is installed differs, it can be easily and quickly accommodated. Even shallow groove-type cable racks L with a small number of cables can be used, as well as cable racks L manufactured to different standards by various manufacturers. Moreover, the work of changing the engagement height position adjustment to the main girder L1 (locating pin 2
Adjustment of the length of the base rod 18 and the hook rod 19 by 2) can be done with one touch (easy and quick), and the hook rod 19 can be inserted into the base rod 18 and It is now held securely and stably, and even if the positioning pin 22 is engaged or disengaged, it will not easily fall from the base rod 18, improving safety, ease of handling, and improving work efficiency. Even better.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention; FIG. 1 is an exploded perspective view, FIG. 2 is a partially cutaway front view of the device in use, and FIG. 3 is a side view of the main parts. L...Cable rack, L1...Main girder, L2...
... Child girder, W ... Cable, 1 ... Support base, 2 ... Engagement edge, 10 ... Engagement fitting, 11 ...
Engagement base, 12...Fixing bolt, 13...Nut plate, 14...Shaft support piece, 15...Fixing piece, 16...
Swing pin, 17... Engaging portion, 18... Base rod, 19
...Hook rod, 20...Positioning means, 21...
Positioning hole, 22... Positioning pin, 30... Clamp fitting, 31... Clamp pedestal, 32... Handle, 33... Clamp part, 40... Roller fitting, 41... Roller pedestal, 42... Screw Stopping means, 43... shaft support piece, 44... roller shaft, 4
5...Roller, 50...Vertical guide roller.

Claims (1)

[Scope of utility model registration request] A support base is placed in contact with the cable rack from below, and one end of the support base is
An engagement fitting is provided with a swingable engagement part that engages with the upper edge of one of the main girders in the cable rack, and an engagement fitting that is swingably provided on the other end of the support base to engage with the upper edge of the other main girder in the cable rack. A clamp fitting with a removable clamp part connected to the handle on the upper edge, and a roller fitting with multiple rotatable disk-shaped rollers for wire threading supported on a roller pedestal fixed on a support base. In the wire extension roller for a cable rack, the engaging portion of the engaging fitting is connected to a substantially cylindrical base rod that is swingably supported on an engaging pedestal fixed to a support base, and a base end thereof. The hook part is slidably inserted into the base rod, and the hook part at the tip is latched to the upper edge of the main girder, and the hook rod is pulled out a predetermined length from the base rod, and the hook part is positioned in the base rod. , and a positioning means for fixing the engaging metal fitting, and this positioning means is constituted of a plurality of positioning holes drilled in the base rod or the hook rod as appropriate, and a positioning pin that can be inserted into the positioning hole, and the engaging metal fitting is A wire extension roller for a cable rack, characterized in that the wire extension roller for a cable rack is configured such that the height position of engagement with the upper edge of the main girder can be freely adjusted.