JPS63289146A - Suspension hook structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides equipment, piping, valves, measuring instruments, etc. to each room of a concrete building of nuclear power plant equipment divided by concrete walls that also serve as radiation shields. , a hanging hook that is used when carrying in and installing electric cable trays, etc., can be set together with the embedded hardware when concrete is poured, without having to be attached to the embedded hardware later by welding. This concerns the structure of the hook.

[Conventional technology]

The concrete building is divided by concrete walls that also serve as radiation shields, and the number of rooms housing equipment, piping, valves, measuring instruments, electrical cable trays, etc., and their supporting structures and bridges is approximately There are 200 rooms, which is a huge number.

Therefore, the indoor surface area of the concrete building where equipment, piping, valves, measuring instruments, support structures such as electric cable trays, and bridges are installed, that is, the floor area;
The total area of contact area and ceiling area is approximately 78,000 square meters, which is quite large.

Hanging hooks used for carrying and installing equipment, piping, valves, measuring instruments, electrical cable trays, etc. into this room are
It is installed by welding to an embedded metal fitting located above the installation location of the item to be installed.

[Problem that the invention seeks to solve]

Although there are a huge number of hanging hooks in the entire nuclear couple plant facility, the hanging hooks are mainly installed on the ceiling.

Since it is installed at a high place, scaffolding is erected and welded to the embedded metal fittings.

As described above, the installation of the hanging hook has the drawback that setting up the scaffolding and welding requires a huge amount of man-hours.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to reduce the number of man-hours required for attaching a hanging hook.

[Means for solving problems]

An embedded metal fitting having an opening and a hanging hook holder having low melting properties such as paraffin wax that fits into the opening and has a built-in hanging hook are set on the ceiling surface at the time of concrete pouring.

When using a hanging structure, equipment, piping, valves, measuring instruments, etc.
When carrying in and installing electric cable trays, etc., heat the hanging hooks from below with a burner, etc. to melt low-melting substances such as paraffin wax, allowing them to be hung from the opening of the embedded metal fittings. A hook appears.

[Effect]

In this way, by creating a structure in which the hanging hook is installed together with the embedded hardware during concrete pouring.

It is no longer necessary to weld hanging hooks to embedded hardware after concrete is poured, and by eliminating the need to set up scaffolding for work at heights and work at heights, work efficiency is improved and safety when installing hanging hooks is improved. It can be measured.

In addition, equipment, piping, valves, measuring instruments, fl! This makes it possible to quickly respond to changes in plans, additions, and cancellations of the installation location of air cable trays, etc., thereby reducing manufacturing and installation work time.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 5.

The structure of the prior art is shown in FIG. 5, and FIGS. 1 and 2.

The structure of the present invention is shown in FIGS. 3 and 4.

In the prior art, construction was carried out using the method shown in FIG.

In order to install the piping 1, first, the hanging hook 2 is welded to the embedded metal fitting 3 on the surface of the ceiling 4. For this purpose, a scaffold of the height required for the welding work is assembled, and after the welding work is completed, the scaffold is dismantled, and the lifting jig 5 is hung on the hanging hook 2 attached to the embedded metal fitting 3, and the pipe is lifted to a predetermined height. The procedure was to weld pipe 1 to the adjacent pipe after fitting it up.

In the present invention, for the purpose of eliminating the high-place welding work for attaching the hanging hook, first, as shown in FIG. The hanging hook holder 6, which has low melting properties such as paraffin wax, is attached to equipment, piping, valves, etc. on the ceiling of the building.
Hanging hooks necessary for installing and transporting measuring instruments, electric cable trays, etc. will be set at the expected locations, and concrete will be poured to serve as radiation shielding.

Next, when using a hanging hook, the hanging hook at the required location is heated by a heating device such as a burner to the hanging hook holder 6, which has low melting properties, and is housed in the embedded metal fitting. Hanging hook 2 installed in condition
It has a structure that allows it to be easily taken out as shown in FIG.

〔Effect of the invention〕

Since the present invention is configured in this way and performs one function, it can produce the following effects.

(1) It is possible to omit the work of assembling and removing scaffolding for high-altitude welding work to install hanging hooks, and the number of installation steps can be greatly reduced.

(2) The safety of construction work is improved by eliminating the need to work at heights to install hanging hooks.

(3) Addition or cancellation of embedded hardware due to changes in plans for equipment, piping, valves, measuring instruments, electric cable trays, etc.
We can respond quickly.

(4) When using embedded hardware with hanging hooks installed to attach supporting structures such as equipment, piping, valves, measuring instruments, electrical cable trays, air conditioning ducts, etc.
It can be used by welding a plate to the entrance of the embedded hardware without removing the hanging hook.

(5) By installing the hanging hooks of the present invention on all embedded metal fittings on the building ceiling, even if the route or layout needs to be changed after the building frame is cast, installation work can be carried out quickly. Become.

[Brief explanation of drawings]

FIG. 1 is a side view of a hanging hook after heating a hanging hook holder having a built-in hanging hook and having low temperature melting properties, which shows an embodiment of the present invention, and FIG. 3 is an x-X arrow view of FIG. 2 of a hanging hook holder having low-temperature melting properties, FIG. 4 is a perspective view with a built-in hanging hook, and FIG. 5 is a conventional example. FIG. 1... Piping, 2... Hanging hook, 3... Embedded hardware, 4... Building frame, 5... Lifting jig, 6... Hanging hook holder, zp riffraff No. 20 #5 Figure

Claims (1)

[Claims] 1. A built-in metal fitting with an opening, a hanging hook that fits into the opening, and a hanging hook holder with low melting properties such as paraffin wax are set at the time of concrete pouring, and when using the hanging hook, A hanging hook structure characterized in that the low-melting substance such as the paraffin wax is melted by heating with a burner or the like from the lower side so that the hanging hook protrudes usably from the embedded metal opening.