JPH0514657Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention supports cable racks used for wiring and piping cable conduits to various building structures from the floor, etc. This invention relates to an earthquake-resistant brace device for a cable rack for reinforcing the rising part of a cable rack.

(Conventional technology) Conventionally, when constructing the rising part (vertical part) of a cable rack, seismic resistance calculations were performed in consideration of safety, and if the strength of the rising part of the cable rack was weak, this part was It was reinforced by supporting it from the side walls with appropriate support materials. However, if the side walls are made of lightweight aerated concrete (ALC), etc., it is not possible to support the rising part of the cable rack with support materials, so a stronger cable rack with a higher level of strength is used. There is.

Furthermore, as disclosed in Japanese Utility Model Application Publication No. 58-183020, an earthquake-resistant cable tray has been proposed in which a rod-shaped reinforcing body is fixed diagonally across a pair of parallel main girders. There is.

(Problem that the invention aims to solve) However, if a strong cable rack with a higher level of strength is used, the construction cost will be high, and the rising part of the existing cable rack is old. When new cables or conduits are added, there is a risk that the cable racks will not be able to withstand earthquakes, so it is necessary to replace them with new cable racks or strong cable racks.

In addition, with the above-mentioned earthquake-resistant cable tray, there were problems such as attaching the rod-shaped reinforcing body to the cable tray was extremely troublesome and difficult to handle.

Furthermore, in the case of conventional seismic brace devices, the cable rack can be stably and reliably supported from the floor etc. at the rising portion of the cable rack.
There were few that had simple configurations.

(Means for Solving the Problems) Therefore, the present invention solves the above-mentioned difficulties, and at the same time, when constructing the rising part of the cable rack, the side walls are made of lightweight aerated concrete (ALC).
Even if the rising part of the cable rack is reinforced, the rising part of the existing cable rack can be reliably reinforced, and the construction cost can be reduced without using a stronger cable rack with a higher level of strength. It can be installed when the cable rack becomes old or when new cables or conduit are added, and the rising part of the cable rack can be reliably reinforced without replacing it with a new cable rack or strong cable rack. Furthermore, both ends of each seismic brace can be supported extremely easily and firmly from the sub-girder side and the main girder side of the cable rack when the cable rack is standing up. This was devised to provide an earthquake-resistant brace device for cable racks that can extremely easily and firmly support both ends of the cable rack. The cable rack installation fittings 1 are installed in the cable racks A and C, and the cable rack connecting fittings 2 are used to connect the main girders C of the adjacent cable racks A. Both ends of a pair of crossed seismic braces 3 and 4 are formed so as to be attached via tightening nuts 5, and the cable rack installation fittings 1 are attached to a main girder connection plate 6 in which a main girder connection hole 8 is bored. At the bottom end of the floor installation plate 1
0 protrudes outward, and a child spar connecting plate 12 in which a child spar connecting hole 11 is bored is provided at the front end of the parent spar connecting plate 6 and protruding inward. An earthquake-resistant brace support piece 14 with a support hole 13 formed therein is protruded from the upper corner, and the cable rack connection fitting 2 is connected to a main girder connection plate 16 with a main girder connection hole 18 formed therein. A child spar connecting plate 20 with a child spar connecting hole 19 formed therein is protruded inwardly at the front end of the seismic spar connecting plate 20, and support holes 21 are formed at both corners of the tip of the child spar connecting plate 20. A means is adopted in which the brace support piece 22 is provided so as to protrude forward.

(Function) According to the seismic brace device of the present invention, the cable rack installation fittings 1 respectively install the main girders C of the rising installation portion of the cable rack A on the floor surface D, etc., and the cable rack connecting fittings 2: The master girders C of adjacent cable racks A are connected to each other. Both ends of a pair of crossed seismic braces 3 and 4 are attached to the cable rack installation fitting 1 and the cable rack connection fitting 2 via tightening nuts 5.

Further, the cable rack installation fitting 1 includes a floor installation plate 10 which is provided on the lower end of the main girder connection plate 6 and protrudes outward.
The child spar B is attached to the child spar connecting plate 12 which is attached to the floor surface D etc. by the main spar connecting plate 6 and protrudes inward from the front end of the parent spar connecting plate 6. The earthquake-resistant braces 3 and 4 are inserted and attached to the support hole 13 of the earthquake-resistant brace support piece 14 provided in a protruding manner.

Furthermore, the cable rack connection fitting 2 includes a child spar connecting plate 2 which is provided to protrude inwardly from the front end of the main spar connecting plate 16.
The child spar B is attached to the child spar 0, and the seismic braces 3 and 4 are inserted and attached to the support holes 21 of the seismic brace support pieces 22 protruding from both corners of the tip of the child spar connecting plate 20.

(Example) Hereinafter, the present invention will be explained with reference to illustrated examples.

The seismic brace device of the present invention is shown in Figures 1 and 2.
As shown in the figure, there is a cable rack installation fitting 1 for installing the main girder C of the rising installation part of the cable rack A on the floor surface D, etc., and the cable rack A installed next to it.
A cable rack connecting fitting 2 that connects the main girder C to each other is provided, and both ends of a pair of crossed seismic braces 3 and 4 are tightened to the cable rack installation fitting 1 and the cable rack connecting fitting 2. It is formed so that it can be attached via a nut 5.

As shown in FIG. 3, the cable rack installation fitting 1 has a fitting portion 7 for fitting the reinforcing groove E of the main girder C of the cable rack A at the center of the main girder connecting plate 6 in the longitudinal direction.
Two main spar connecting holes 8 are bored in the fitting part 7 at appropriate intervals in the vertical direction, and the main spar connecting plate 6
A floor installation plate 10 with an installation hole 9 drilled in the center is provided at the lower end of the spar to protrude outward, and the front end of the main spar connecting plate 6 has two child spar connecting holes 11 approximately in the center. A sub-spar connecting plate 12 is provided inwardly with holes drilled at appropriate intervals in the direction of the distal end, and a support hole 13 is bored in the upper corner of the tip of the sub-spar connecting plate 12 at approximately the center. A brace support piece 14 is provided to protrude forward, and an outer abutment piece 15 is further formed at the rear end of the main spar connecting plate 6 to protrude inward.

On the other hand, the cable rack connecting fitting 2 has a fourth
As shown in the figure, a fitting part 17 for fitting the reinforcing groove E of the main spar C of the cable rack A is provided in the central part of the main spar connecting plate 16 in the longitudinal direction, and this fitting part 17 has four main spar connections. A child spar connecting plate in which holes 18 are formed at appropriate intervals in the vertical direction, and two child spar connection holes 19 are formed at appropriate intervals in the front end of the main spar connection plate 16 approximately in the center thereof. 20 is provided to protrude inwardly, and earthquake-resistant brace support pieces 22 with a support hole 21 bored approximately in the center are provided at both end corners of the child spar connecting plate 20 to protrude forward. An outer contact piece 23 is formed at the rear end of the plate 16 so as to project inward.

That is, each cable rack installation fitting 1 is attached to the outer surface of the main spar C at both ends of the child spar B of the rising installation part of the cable rack A, and the fitting portion 7 of the main spar connecting plate 6 is fitted into the reinforcing groove E of the main spar C. and the outer abutting pieces 15 are connected to the rear surface of the main spar C so that each main spar connecting hole 8 of the fitting part 7 of the main spar connecting plate 6 and the main spar C
The reinforcing groove E is connected to two bolt insertion holes F through a connecting bolt 24 and a tightening nut 25, respectively. In addition, each child spar connecting hole 11 of the child spar connecting plate 12 of each cable rack installation bracket 1 and the child spar B
It is connected to two bolt insertion holes G drilled at both ends of the body via a connecting bolt 26 and a tightening nut 27, respectively. After that, each cable rack installation bracket 1
The floor installation plates 10 are installed at predetermined positions on a floor surface D of concrete or the like through the foundation bolts 28 in the installation holes 9, respectively.

Next, each cable rack connection fitting 2 is attached to the outer surface of the master spar C at both ends of the child spar B of the rising connection part of the cable rack A.
7 is fitted into the reinforcing groove E of the main girder C, and the outer contact piece 2
3 are respectively joined so as to be in contact with the rear surface of the main spar C, and inserted into each main spar connecting hole 18 of the fitting part 17 of the main spar connecting plate 16 and the reinforcing groove E of each main spar C to be connected. Connecting bolts 2 are inserted into each bolt insertion hole H, which is drilled two by two.
9 and a tightening nut 30, respectively. In addition, the child girder connecting plate 2 of each cable rack connecting fitting 2
0 and two bolt insertion holes I bored at both ends of the child spar B through connection bolts 31 and tightening nuts 32, respectively.

Then, the support hole 13 of the seismic brace support piece 14 of each cable rack installation fitting 1 connected as described above and the support hole 21 of each seismic brace support piece 22 of each cable rack connection fitting 2 are intersected. Both ends of a pair of seismic braces 3 and 4 can be attached using a tightening nut 5 and a locking nut 33.

(Effect of the invention) Therefore, the seismic brace device of the present invention has a cable rack installation bracket 1 for installing the main girder C of the rising installation part of the cable rack A on the floor D, etc. The cable rack installation fitting 1 and the cable rack connection fitting 2 are provided to connect the main girder C to each other.
In addition, both ends of the pair of intersecting seismic braces 3 and 4 are formed so as to be attached via tightening nuts 5, and the cable rack installation fittings 1 are attached to the main girder in which the main girder connection hole 8 is bored. A floor installation plate 10 is provided on the lower end of the connecting plate 6 to protrude outward, and a child spar connecting plate 12 having a child spar connecting hole 11 bored in the front end of the main spar connecting plate 6 is provided to protrude inward. A seismic brace support piece 14 having a support hole 13 is provided protrudingly from the upper corner of the tip of the child spar connecting plate 12, and the cable rack connecting fitting 2 is connected to the main spar connecting hole 18. A child spar connection hole 1 is provided at the front end of the main spar connection plate 16 in which a child spar connection hole 1 is drilled.
An earthquake-resistant brace support piece 22 is provided with a child spar connecting plate 20 having a hole 9 bored therein and protruding inwardly, and a supporting hole 21 is bored at both corners of the tip of the child spar connecting plate 20.
Since the cable racks are configured to protrude forward, the earthquake-resistant braces 3 and 4 can be extremely easily supported on the rise of the cable rack A by the cable rack installation fittings 1, the cable rack connection fittings 2, and the tightening nuts 5. Even if the side walls are made of lightweight aerated concrete (ALC), the rise of cable rack A can be reliably reinforced, making it possible to construct the cable rack without using a stronger cable rack that is one rank higher in strength than in the past. The cost can be provided at low cost.

In addition, it can be installed even when the rising part of the existing cable rack becomes old or when adding new cables or conduit, and the cable rack A can be installed without replacing with a new cable rack or strong cable rack. It becomes possible to reliably reinforce the rising part of the

Further, the cable rack A can be supported stably and reliably from the floor D etc., and the main girder C portion of the cable rack A and the floor D etc. can be firmly connected. Furthermore, the seismic brace device itself has a simple configuration, excellent durability, and is easy to handle.

In particular, the cable rack installation bracket 1 is installed at the lower end of the main girder connecting plate 6 in which the main girder connecting hole 8 is bored, and the floor installation plate 10 is provided so as to protrude outward. , a child spar connecting plate 12 in which a child spar connecting hole 11 is bored is provided to protrude inwardly, and this child spar connecting plate 12
Since an earthquake-resistant brace support piece 14 with a support hole 13 is protruded from the upper corner of the tip of the cable rack A, the cable rack installation bracket 1 can be attached to the outside surface of the main girder C of the rising installation part of the cable rack A. , the outer abutment pieces 15 of the main spar connecting plate 6 are joined so that they are in contact with the rear surface of the main spar C, and each bolt of the main spar C is inserted into each of the main spar connecting holes 8 of the main spar connecting plate 6. It becomes possible to reliably connect to the hole F via the connecting bolt 24 and the tightening nut 25, respectively. Moreover, since the cable rack installation fitting 1 has the floor installation plate 10 protruding outward, the cable rack installation fitting 1 itself is highly stable when installed on the floor D, etc. Become.

Furthermore, a child spar connection hole 11 is provided at the front end of the main spar connection plate 6.
An earthquake-resistant brace support piece 14 has a supporting hole 13 bored in the upper corner of the tip of the lower spar connecting plate 12 which projects inwardly.
Since it is constructed by protruding, the child spar B can be easily and reliably attached to the child spar connecting plate 12, and the seismic brace 3,
4 can be inserted easily and reliably.

In addition, the cable rack connecting fitting 2 is inserted inwardly into the front end of the main spar connecting plate 16 in which the main spar connecting hole 18 is formed, and the child spar connecting plate 20 in which the child spar connecting hole 19 is formed. Since the seismic brace support pieces 22 with support holes 21 are protruded forward at both corners of the tip of the child spar connecting plate 20, the cable rack connecting fittings 2 are connected to the cable rack A. The outer abutment pieces 23 of the master spar connecting plate 16 are joined to the outer surfaces of the master spar C at both ends of the child spar B of the rising connection part so that they are in contact with the rear surface of the master spar C, thereby connecting the master spar. Connecting bolts 29 are inserted into each parent girder connection hole 18 of the plate 16 and each bolt insertion hole H of each parent girder C for connection.
and the tightening nut 30 allows for reliable and firm connection. Moreover, the child spar connecting plate 20
In addition, the child girder B can be easily and reliably attached, and the seismic braces 3 and 4 can be inserted into the support hole 21 of the seismic brace support piece 22 to be easily and reliably attached.

[Brief explanation of the drawing]

The drawings illustrate the present invention; Fig. 1 is a front view, Fig. 2 is a bottom view, Fig. 3 is an exploded perspective view showing the installation part of the rising cable rack, and Fig. 4 is an exploded perspective view showing the rising part of the cable rack. It is an exploded perspective view showing a connection part. 1... Cable rack installation fittings, 2... Cable rack connection fittings, 3... Earthquake-resistant brace, 4...
Earthquake-resistant brace, 5... Tightening nut, 6... Main spar connecting plate, 7... Fitting part, 8... Main spar connecting hole, 9...
Installation hole, 10... Floor installation plate, 11... Child girder connection hole, 12... Child girder connection plate, 13... Support hole, 14
...Seismic brace support piece, 15...Outer contact piece,
16... Main spar connecting plate, 17... Fitting part, 18...
Main girder connection hole, 19... Child girder connection hole, 20... Child girder connection plate, 21... Support hole, 22... Seismic brace support piece, 23... Outer abutment piece, 24... Connection bolt, 25 ...Tightening nut, 26...Connection bolt,
27...Tightening nut, 28...Foundation bolt, 29
... Connection bolt, 30 ... Tightening nut, 31 ...
Connection bolt, 32... Tightening nut, 33... Locking nut, A... Cable rack, B... Child girder, C
...Main girder, D...Floor surface, E...Fitting groove, F...Bolt insertion hole, G...Bolt insertion hole, H...Bolt insertion hole, I...Bolt insertion hole.

Claims (1)

[Scope of utility model registration request] It is equipped with cable rack installation fittings that install the main girders of the rising installation part of the cable rack on the floor, etc., and cable rack connection fittings that connect the main girders of adjacent cable racks, and the cable rack installation fittings and the cable The cable rack installation fittings are formed so that both ends of a pair of intersecting seismic braces can be attached to the cable rack connection fittings via tightening nuts, and the cable rack installation fittings are attached to the main spar connection plates in which the main spar connection holes are drilled. At the bottom end, a floor installation plate is provided that protrudes outward,
A child spar connecting plate with a child spar connecting hole drilled therein is protruded inward from the front end of the parent spar connecting plate, and a support hole is provided protruding from the upper corner of the tip of this child spar connecting plate. A child spar connecting plate in which a child spar connecting hole is formed by protruding an earthquake-resistant brace support piece, and a cable rack connecting metal fitting is formed at the front end of a main spar connecting plate in which a parent spar connecting hole is drilled. An earthquake-resistant brace for a cable rack, characterized in that an earthquake-resistant brace support piece is provided to project inwardly, and earthquake-resistant brace support pieces having support holes formed at both ends of the lower girder connecting plate are provided to project forward. Device.