JPS589309B2 - Piping support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for supporting piping such as electrical conduits that require earthquake resistance, for example in nuclear power plants.

As this type of piping support device, one shown in FIG. 1, for example, is known.

That is, in this case, a mounting base b is attached to an anchor am buried in the ceiling, and a support column C and an auxiliary member d are attached to this mounting base b by means such as welding.
A supporting member e is attached to the support column C, and a fastening fitting f is attached to the supporting member e, so that the pipe g is fixed by the tightening fitting f.

However, all of the supporting materials e are installed in a direction perpendicular to the axial direction of the piping g, and each supporting material e... is parallel to each other, so that the external force applied in the axial direction of the piping g Rigidity is weak.

Therefore, conventionally, in order to increase the rigidity in this direction, piping g
Measures have been taken to utilize the axial rigidity of the pipe itself by attaching an axial support device to the pipe g, or by fixing the pipe g at its bent portion, for example, at the part h in Fig. 1. In either case, it takes time and effort to install, and it is necessary to calculate the stress of the piping g, making the installation extremely troublesome.

This invention was made based on the above circumstances, and its purpose is to provide a pipe that has rigidity against external forces applied from all directions of the pipe, improves earthquake resistance, and has a simple structure and is easy to construct. The object of the present invention is to provide a support device.

A first embodiment of the present invention will be described below with reference to FIGS. 2 to 7.

In the figure, reference numeral 1 indicates a pipe such as a conduit in a nuclear power plant, for example, and the middle of the pipe 1 is supported by a support device 2w on a building side, for example, a ceiling A.

The support device 2 will be explained below.

3, 3 are mounting bases, and these mounting bases 3, 3 are fixed to anchor bolts 4 buried in the building side.

A support 5 is attached to one of the mounting bases 3 by welding or the like, and an auxiliary member 6 is attached to the support 5, and this auxiliary member 6 is fixed to the other mounting base 3. .

Further, an elongated support member 7 is attached to the support post 5 in a cantilevered manner by welding in a direction perpendicular thereto, that is, in a horizontal direction.

This support member 7 has a fence shape with an open top surface, and the edge of the opening is bent inward to form sawtooth locking edges 8, 8 as shown in FIGS. 4 and 5. has been done.

Note that the pillar 5, the auxiliary member 6, and the support member 7 are formed in substantially the same plane.

Further, reference numeral 10 denotes a fastening fitting attached to the support member 7.

This fastening fitting 10 is made by connecting the upper ends of a pair of fastening pieces 1 lower a and 10 a with a screw 11, and as shown in FIG. It is formed so that it can be fixed at an angle, for example, at an angle of 45 degrees.

Locking recesses 12, 12 are formed on both sides of the base of each tightening piece 10a, 10a, respectively.

These locking recesses 12, 12 are connected to the locking edges 8, 8.
At the same time, hook the pipe 1 between the tightening pieces 10a and 10a.
By pinching and tightening the screw 11, the tightening piece 10a
, 10a are integrated with the support member 7, so that the piping 1 is fixed.

By loosening the screw 11, the clamping fitting 10 becomes movable in the length direction of the support member γ, and the position can be adjusted, so that the pipe 1 can be fixed at an optimal position.

As shown in FIG. 6, the support device 2 configured as described above is arranged by alternately changing the angles θ1 and θ2 of each support member 7 with respect to the axial direction x-x of the pipe 1. It supports the piping 1.

The angles θ1 and θ2 are both set to 45°, for example.

According to the embodiment of the above configuration, each support member 7 is disposed obliquely with respect to the pipe 1 and supports the pipe 1 by alternately changing the angle with respect to the pipe 1. When an external force is applied in the axial direction of the support member 7, the force is dispersed as a component force in the length direction of each support member 7.

Since the support member 7 has a uniform rigidity in the longitudinal direction, the axial rigidity of the pipe 1 can be increased as a result.

Moreover, since the force applied in the radial direction of the pipe 1 is similarly dispersed in the length direction of the support member 7, the rigidity of the pipe in the radial direction can of course be improved.

As described above, according to this embodiment, sufficient rigidity can be obtained against external forces from both the axial and radial directions of the piping 1, and the supporting members 7... are alternately arranged at different angles. Since it is arranged so that rigidity can be obtained in all directions intermediate between the axial direction and the radial direction.

Therefore, seismic resistance can be improved without the need for installing an axial support device or other special support structure, which takes time and effort as in the past.

Further, in the case of this embodiment, since the fastening metal fitting 10 is engaged with the serrated locking edge 8 provided on the support member 7, the fastening metal fitting 10
This prevents the undesired movement of the 0, making the installation stronger and further improving earthquake resistance.

In the above embodiment, the mounting base 3 is fixed to the building using the anchor bolts 4, but the mounting base 3 can be fixed using, for example, an anchor fitting 13 as shown in FIG. 8 as a modified example. You may also do so.

In other words, the anchor fitting 13 of this modification has leg portions 13b, 13b attached to the attachment surface portion 13a,
The mounting base 3 is fixed to the mounting plane portion 13a by welding.

According to such a configuration, the mounting base 3 has a flat portion 13a.
Since the anchor metal fitting 13 can be fixed within a relatively free range, compared to the case of an anchor bolt, high precision is not required for the buried position of the anchor metal fitting 13, and the work becomes easier.

Further, FIG. 9 shows a second embodiment of the present invention, in which the pipe 1 is supported on the side wall B of a building.

That is, the supporting material 7 and, if necessary, the auxiliary material 6 are attached to the anchor fittings 13.13 provided on the side wall B, and the piping 1 is supported by the supporting material 7.

As in the first embodiment, each support member 7 is arranged to face at least two different directions with respect to the axial direction of the pipe 1, so as to obtain rigidity in the axial direction.

Although each of the above-mentioned embodiments is constructed as described above, in carrying out the present invention, specifics such as the structure and shape of the supporting members, the mutual relationship of the angles of each supporting member, etc. may not be changed unless it goes against the gist of the present invention. Of course, the embodiments can be configured and implemented in various ways.

As explained above, this invention fixes the supporting material that supports the piping to the building side facing at least two different directions with respect to the axial direction of the piping. It is important to obtain sufficient rigidity in directions intermediate between these two directions.

Therefore, there is no need to take the trouble of installing an axial support device or other special structures as in the past.
Construction is easy and the structure is simple.

Since the seismic resistance of piping can be improved, for example, when applied to a nuclear power plant, the safety of nuclear reactors and other equipment can be further improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional pipe support device, FIGS. 2 to 7 show a first embodiment of the present invention, FIG. 2 is a perspective view of the pipe support device, and FIG. 3 is a perspective view of the pipe support device. A side view as seen from the Nakagawa direction, Figure 4 is a sectional view of the support material along the line ■-■ in Figure 2, Figure 5 is a plan view of the support material, and Figure 6 is the relationship between the piping and the piping support device. 7 is an exploded perspective view of the fastening fitting, FIG. 8 is a side view showing a modified example of the mounting structure of the pipe support device, and FIG. 9 is a second embodiment of the present invention. It is a side view of the piping support device shown. 1... Piping, 2... Support device, 7... Support material, 10w...
Tightening fittings.

Claims (1)

[Claims] 1 Equipped with a plurality of elongated cantilever support members provided protruding from the building side and piping supported by these support members, and the protruding directions of adjacent ones of the support members are at least at an angle with respect to the piping. A piping support device characterized by supporting in two mutually different directions.