JPH0448271Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This invention relates to scaffolding within lightweight ceilings.

``Prior Art'' As shown in Fig. 3, a lightweight ceiling consists of hanger bolts 2 suspended from inserts (not shown) buried in a slab 1, M bars 3, .
... and C steel 4, ceiling board 5 lined with ...
It is made by supporting.

The light weight steel frame base for the ceiling consisting of the suspension bolts 2, C steel 4, and M bar 3 described above is intended to support the ceiling board 5, and does not take into account the possibility of people standing on the ceiling board 5. It is not designed to be Therefore, the connections between the hanger bolt 2 and the C steel 4 as well as between the C steel 4 and the M bar 3 are all connected by simple clips.

The distance between the lower surface of the slab 1 and the lightweight ceiling is 2 m or more. There are various operations within such a lightweight ceiling as listed below.

In other words, (a) Replacement of piping due to deterioration of equipment piping, etc. (c) Repair work at the bottom end of the slab (c) Wiring work of electric wires for the OA era (d) In the case of steel frame structures, repainting (e) Safety measures work (handrails, safety belts, etc.) facilities) etc.

Currently, when carrying out the above-mentioned work, since it would be costly to completely dismantle the ceiling, a part of the ceiling is dismantled and used as an entrance for carrying in and out of materials, and a scaffold board 6 is erected over the C steel 4. The actual situation is that it is used as a scaffolding.

``Problem that the invention attempts to solve'' However, as mentioned above, in the case of scaffolding as described above, the lightweight steel frame base for the ceiling is originally designed to support only the ceiling board 5, so it cannot bear a large load. Although it is possible to carry out gentle work such as inspecting the inside of the ceiling, it is not possible to perform other tasks such as the above.

Furthermore, since the scaffolding is installed on the C steel 4, there is an inconvenience that the worker cannot reach the bottom surface of the slab 1 2 meters above.

``Means for solving problems'' and ``effects'' This proposal was created in view of the above circumstances, and its gist is that recesses for attaching the crotch of the anti-hanging bolts are attached to the top and bottom of the opening of the rollover box. A hook bolt for locking the hanging hand bolt is attached to the bottom of the box with a nut, and a single pipe clamp is fixed to the top of the box. Assuming that a single pipe is erected at a desired level position and a scaffolding board is placed over the single pipe, the suspension bolts with sufficient support strength are used as the mounting base to withstand various types of work, and the suspension bolts can be placed at any desired level. The object of the present invention is to provide a scaffold that can be erected at a certain location without the inconvenience of not being able to reach the bottom surface of the slab.

"Example" This will be explained in detail below based on the drawings.

1A and 1B are a front view and a perspective view of the hardware used in constructing the scaffold according to the present invention, and FIGS. 2A and 2B are a front view and a plan view of the scaffold according to the present invention.

In Fig. 1, numeral 7 is a box made of steel or the like, with an opening facing the side, and recesses 7a and 7b for attaching the two arm bolts at the top and bottom of the opening. It is shaped.

Further, a hook bolt 8 for locking the pair of hanging hand bolts is passed through the box bottom 7c and is assembled with a nut 9.

Thus, the box body 7 is crimped by locking the hook bolt 8 to the hanger bolt 2 and tightening the nut 9 by fitting and locking the crotches in the recesses 7a and 7b.

Therefore, the box body 7 is in a non-rotating state, and the top surface 7d of the box body 7 is
When a vertical load is applied to the hook bolt 8 and the recess 7b, crimping forces act in opposite directions between the hook bolt 8 locking point and the recess 7b locking point, further increasing the locking to the hanger bolt 2. Become. Incidentally, as shown in Figure b, in order to improve the locking operation for the above-mentioned hanger bolt 2, it is preferable to roughen the locking surface 8a of the hook bolt 8.

A single tube clamp 10 is placed and fixed on the top surface 7d of the box.

As is clear from the above description, when a vertical load is applied to the member gripped by the single pipe clamp 10, the metal fitting 11 having the above-mentioned configuration is firmly locked to the hanger bolt 2 and will not slip down.

The present invention utilizes the function of the metal fittings 11 to secure a single pipe joint for receiving the scaffolding board using the hanging bolts 2, which have sufficient support strength, as the mounting base.

That is, as shown in FIG.
Attach the hardware 11 to a desired level position, span the single pipe 12 over it, and connect these single pipes 12, . . .
A scaffold board 6 is placed on top, and the scaffold is constructed at a desired level within the ceiling.

As a result, a large vertical load such as the weight of the worker 13 and vibrations is applied to the single pipe 12, but the hardware 11 that receives this is more firmly latched to the hanger bolt 2. The suspension bolt 2 is extremely stably supported at the desired level position, and a strong working scaffold is provided.

In addition, 11' and 11'' in the figure show a mode in which the metal fitting 11 is used for another purpose.Using the characteristics of the metal fitting 11 described above, in the case of the metal fitting 11', a single pipe 12' can be gripped. In the case of the safety handrail attachment, the hardware 11'' is the fastening end of the safety belt 14.

"Effects of the Invention" As described above, according to the present invention, a lightweight intra-ceiling scaffold can be constructed to have the required strength and desired level, and is of great practical significance.

[Brief explanation of the drawing]

Figures 1 a and b are a front view and a perspective view of the hardware used in constructing the proposed scaffold, Figures 2 a and b are a front view and plan view of the proposed scaffold, and Figure 3 is a front view showing a conventional means. . 1... Slab, 2... Hanging hand bolt, 3... M
Bar, 4... C steel, 5... Ceiling board, 6... Scaffolding board, 7... Box, 8... Hook bolt, 9...
Nut, 10...Single pipe clamp, 11...Hardware,
12...Single pipe, 13...Worker, 14...Safety belt.

Claims (1)

[Scope of utility model registration request] A recess for attaching a pair of lifting hand bolts is formed on the top and bottom of the opening of the rollover box body, a hook bolt for locking the pair of lifting hand bolts is attached to the bottom of the box with a nut, and a single tube clamp is fixed to the top of the box. A lightweight in-ceiling scaffold characterized in that a single pipe is erected at a desired level position of a hanging hand bolt on a lightweight steel frame base of a ceiling using a suitable hardware, and a scaffold board is placed over the single pipe.