JPS5814644Y2 - Seismic support device for panels - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an earthquake-resistant support device for panels, and particularly to an earthquake-resistant support device for panels that has an improved connection mechanism between the panels and cable equipment.

Regarding the seismic design of electrical instrumentation equipment, conventionally, the panels and the cable equipment that electrically connects them (cable trays, conduit conduits, cable shafts, cable ducts, and the electric wire cables housed in these and their supports) Separate approaches were taken to improve seismic performance.

In other words, if the panels and cable equipment are each designed to have a rigid structure, and if they are combined so that the connecting parts do not affect each other, the system as a whole will be rigid and earthquake resistant. It has been said that there is a sex.

However, as seismic design requirements become more stringent, the installation locations of panels are subject to various restrictions, and in order to obtain the necessary seismic strength, the weight of panels and cable equipment increases and the size of supports increases. become more complex.

As a result, the upper part of the panel and its surroundings become complicated and narrow, which makes cable extension work and joint work extremely difficult, reduces the space factor, and causes inconvenience during maintenance and inspection.

In this way, the design philosophy of separately approaching seismic performance improvement and then independently combining the whole structure had limits to performance improvement, and it was not possible to obtain satisfactory performance.

The present invention has been made to eliminate such inconveniences in conventional devices.

That is, the present invention supports a cable duct using a panel and an earthquake-resistant support that seismically fixes it to a wall surface, and also absorbs part of the weight of the cable shaft connected to the cable duct and the electric cables housed in the cable shaft. The main object of this invention is to provide an earthquake-resistant support device for panels that does not have the above-mentioned drawbacks by directly supporting the wall surface through a support that connects the shaft and the wall surface.

Hereinafter, the embodiments of the present invention shown in the drawings will be described in detail.

In FIGS. 1 to 3, a board 1 is firmly fixed to a floor 2, and is supported near its upper end by a wall 4 via a plurality of seismic supports 3.

Each seismic support 3 has one end firmly fixed to the embedded plate 5 which has been embedded and fixed in the wall surface 4 in advance by welding the entire circumference, and the other end is fixed near the upper end of the panel 1 by a bolt nut (not shown). Ru.

A cable duct 6 is placed on a plurality of these seismic supports 3 and on the upper surface of the panel, and is firmly fixed by bolts and nuts (not shown).

The upper plate of the cable duct 6 has a plurality of separable lids 7 to 1.
Each lid is detachably attached to the duct body using bolts, and is attached to the duct body without any gaps to prevent dust from entering.

Reference numerals 11 and 12 denote cable shafts for storing and fixing cables between a cable tray (not shown) and the cable duct 6, and their lower ends are cut-out holes for cable passage provided in the covers 7 and 10 of the cable duct. Covers 7a and 10a,
The seismic support 3 supports the own weight and part of the weight of the housed cables via the cable duct.

Note that the connecting portions of the cable duct and the cable shafts 11, 12 are physically in contact with each other, but are not mechanically fixed.

In addition, the cable shaft 11.12 is connected to the cable duct 6.
is fitted on the outside of the protruding edges formed on the opening edges of the punched holes 7a and 10a, thereby preventing dust from entering the duct 6.

cable shirt) 11 and 12 are the front lids 11a, respectively.

12a is bolted so that it can be easily opened and closed.
Creates a dust-proof structure when the lid is closed.

The cables in these cable shafts are arranged one by one by cable fixing devices and fixed to the shaft body, so that the cable shaft supports the entire weight of the cables housed therein.

This cable shaft is fixed to the wall 4 by a support 13 in the vicinity of the cable duct 6, so that its own weight and a part of the weight of the accommodated cable are supported by the wall 4.

In the device of the present invention configured as described above, the cable shaft is attached to the wall surface to distribute the load, which creates a margin in terms of seismic design, and eliminates the inconveniences caused by the weight and size of various supports and the shaft itself, as in the past. It can be avoided.

In addition, since the cable duct is also directly fixed on the brace and its seismic support, it is possible to omit the use of the seismic support for supporting the duct, and in combination with retracting the vicinity of the lower end of the cable shaft to the front of the wall, the cable duct is directly fixed on the brace and its seismic support. The cables are neatly organized, making cable extension and joint work, as well as maintenance inspections and maintenance easier.

In addition, in the seismic design of the pawn, the cable shafts, which were conventionally suspended from the top of the pawn, are now rigidly fixed to the wall surface via supports near their lower ends. The model is clarified and calculation accuracy can be improved.

In addition, in the present invention, by providing a water retaining mechanism near the entrance of the cable duct, it is possible to dam up water that passes through the cable and enters into the pawn.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing an earthquake-resistant support device for trusses according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a perspective view thereof. 1... quality, 2... floor surface, 3...
...Earthquake support, 4...Wall surface, 5...
・Embedded plate, 6...Cable duct, 7~
10... Cable duct cover, 7a, 10a.
..... Hole, 11.12 .... Cable shaft, 11a, 12a ..... Cover of cable shaft, 13 .... Support.

Claims (1)

[Scope of utility model registration request] A panel installed on the floor in front of the wall, an earthquake-resistant support that connects the upper back of the panel and the wall, a cable duct mounted on the panel and earthquake-resistant support, and this cable duct. An earthquake-resistant support device for panels, comprising a cable shaft erected at the end of the wall and fixed to the wall.