JPH045654Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a fall prevention shelf used at retaining wall construction sites, etc.

(Prior art) At retaining wall construction sites, measures to prevent falls are required from the standpoint of worker safety, but no simple measures are known yet, and scaffolds are constructed by appropriately assembling single pipes, etc.

(Problems to be Solved by Invention) The above-mentioned conventional assembly work not only takes time and effort, but also has the problem of high cost. Mobile scaffolding has also been developed, but its use requires backfilling the bottom of the scaffold and leveling the ground, which limits the timing of its use.Also, because it is relatively large, it takes a lot of time and effort to install and remove it. A problem arose that required further investigation.

(Means for solving the problem) However, this invention combines an anchor that is inserted and fixed into a drain pipe, a horizontal rod that is fixed to the anchor, and a shelf that is installed on the horizontal rod to create a shelf that prevents falling. With this structure, the fall prevention shelf can be easily installed with less labor after the drainage pipe has been buried, and it is also easy to transport and inexpensive, thus solving the problems of the conventional method.

That is, this idea involves inserting and fixing one end into a pipe installed horizontally within a retaining wall, and attaching a horizontal rod receiver for shelf support to the other end of a fixing member with the other end protruding outside the pipe. This fall prevention shelf is a combination of anchors arranged in series, horizontal bars attached to the anchors at right angles to the fixing member, and shelves installed on the horizontal bars. In addition, the fixing member is a pantograph-shaped hanging plate that expands and expands by rotation, attached to one end of the shaft rod with a thread carved in it, and a lower frame of the mounting hook is attached to the other end as a holder for the horizontal rod. It is something. Next, the mounting bracket should be slidable. Furthermore, the shelf includes a bottom frame that is placed on the horizontal rod, and a hanging rod that hangs on the retaining wall.
and a protective fence connected to the bottom frame,
A support rod is protruded from the lower end of the protection fence between it and the retaining wall.

In the above, by using a pipe for draining water in addition to the pipe installed horizontally within the retaining wall, there is no need to bury the pipe for the shelf.

Furthermore, if the fixing member is fixed to the pipe using a pantograph-shaped fixture, it is extremely easy to fix and release the pipe, resulting in good workability.Moreover, the fixed state is ensured, and reliability is high.

(Function) This invention combines anchors, cross bars, and shelves, so each component can be easily assembled on site, and also easily dismantled. It can also be made smaller by disassembly, making it easier to handle and transport. is also easy.
It has good workability and can be assembled and installed safely and quickly even by unskilled workers.

(Embodiment) This invention will be explained below based on the embodiment shown in FIGS. 1 to 6.

A lower frame 3a of a mounting hook 3 having an inverted U-shape on the side is slidably and loosely fitted to the base of the shaft rod 2 on which the thread 1 is carved as a receiver for the horizontal rod B. On both sides of the tip of the lower frame 3a of the mounting hook 3, one end 4a of fixing members 4, 4, which are four hanging plates connected in a pantograph shape, is fixed by a pin 5. The end 4b is
It is fixed by a pin 7 to a fixed body 6 screwed onto the tip of the shaft rod 2. Lower frame 3a of the mounting hook 3
A support leg 8 of a predetermined height is protruded from the lower end of the support leg 8. The upper frame 3b of the mounting hook 3 is horizontally rotatably fixed to the upper end of the side frame 3c by a boss 3d.
In the figure, 9 is a nut, 10 is a handle for rotating the nut, and 23 is a rotation stopper pin.

A fall prevention shelf is constructed by combining the anchor A configured as described above, the horizontal bar B having a square front shape, and the shelf C.

The shelf C is made of steel, and has a protective fence 12 rotatably connected to one side of a rectangular bottom frame 11 that is placed on a horizontal rod, and a horizontal rod B below the other side of the bottom frame 11. and a retaining rod 13 protruding from the retaining wall 15;
A support rod 14 is connected below the protective fence 13, and the tip of the support rod 14 is brought into contact with a retaining wall 15.

Next, a method of using the fall prevention shelf shown in the above embodiment will be explained.

After the fixing member 4 of the anchor A is inserted into the drain pipe 16 buried in the retaining wall 15, the handle 10 of the anchor A is rotated. Handle 1
As the nut 9 rotates and moves in the direction of arrow 17 in FIG. 1, the mounting hook 3 is also pushed in the same direction. Then, the fixing member 4 expands, and the corner portion 4c bites into the inner wall of the pipe 16. Therefore, the anchor A is supported within the pipe 16 by the opposing corners 4c of the fixing member 4 and the supporting legs 8, and is securely attached to the pipe 16 without fear of coming off.
Fixed.

After fixing the plurality of anchors A in a horizontal row at predetermined intervals as described above, the upper frame 3b of the mounting hook 3 is horizontally rotated (as shown by the chain line in Figure 3), and the horizontal rod B is erected at right angles to the fixing member. Then, the upper frame 3b is returned to its original position and closed. After that, the bottom frame 11 of the shelf C is placed on the horizontal rod B.
At the same time, attach the hanging rods 13 of the shelf C to the retaining wall 15.
and hang it.

When set as described above, the bottom frame 11 of the shelf C is supported by the horizontal rods B, and the hanging rods 13 and the support rods 1
4 abuts against the retaining wall surface, the shelf C is stably supported on the horizontal rod B without fear of rotation or rocking.

Next, in the embodiment shown in FIG.
A nut 18 is interposed between the supporting leg 8 and the mounting hook 3, and the upper frame 3b of the mounting hook 3 is made immovable.

To use the anchor A of this embodiment, after inserting the distal end of the anchor A into the pipe 16, rotate the nut 18 and move the supporting leg 8 in the direction of the arrow 19, thereby tightening the fixing member. 4 is expanded and fixed, and then the horizontal rod B is fitted to the mounting hook 3, and then the nut 9 is rotated to move the mounting hook 3 in the direction of arrow 20 and the horizontal rod B is fixed.

In the above embodiment, the supporting leg 8 is provided at one end of the mounting hook 3 or close to the mounting hook 3, but instead of the supporting leg 8, a supporting body 21 is provided protruding from the upper part of the fixed body 6 of the fixed member 4, or It is also possible to prevent the anchor A from swinging by attaching the ship 22 to the corner 4c of the anchor A. In addition to the mounting hook 3, the holder may be, for example, a square-shaped frame.

Furthermore, in the above embodiment, since the shelf C is constructed by rotatably connecting the protective fence 12 to the bottom frame 11,
Although the shelf C is foldable and easy to handle, the structure of the shelf C is not limited to this embodiment. Further, the fixing member 4 can be expanded by drawing its end 4b side toward the base of the anchor A.

(Effects of the invention) In other words, according to this invention, a fall prevention shelf is constructed of an anchor that is inserted and fixed into the pipe, a horizontal bar that is attached to the anchor, and a shelf that is installed on the horizontal bar, so that it can be used for draining water. By using the same pipe as the above, the fall prevention shelf can be assembled and installed very easily, and it can also be easily removed. Furthermore, since the anchor, horizontal rod, and shelf are separated, it is easy to assemble, transport, etc., and has various effects such as good workability.

[Brief explanation of the drawing]

Fig. 1 is a front view of the anchor in this embodiment of the invention, Fig. 2 is a plan view showing the upper frame attached, Fig. 3 is a plan view showing the fixing member attached, and Fig. 4 is the horizontal view. 5 is a perspective view of the device in use, FIG. 6 is an explanatory view of the device in use, and FIG. 7 is a front view of another embodiment. 2... shaft rod, 3... mounting hook, 4... fixing member,
11...bottom frame, 12...protection fence, 13...hanging rod, 14...support rod, A...anchor, B...horizontal rod, C...shelf.

Claims (1)

[Claims for Utility Model Registration] 1. One end of the fixing member is inserted and fixed into a pipe installed horizontally within the retaining wall, and the other end of the fixing member projects outside the pipe. A horizontal rod for supporting a shelf is attached to the other end of the fixing member. A fall prevention shelf comprising: an anchor formed by consecutively arranging holders; a lateral rod attached to the holder of the anchor at right angles to the fixing member; and a shelf installed on the lateral rod. 2. The fixing member is a pantograph-shaped hanging plate that expands and expands by rotation, attached to one end of the shaft rod with a thread carved into it, and a lower frame of the mounting hook is attached to the other end as a holder for the horizontal rod. Scope of claim for utility model registration No. 1
Fall prevention shelf as described in section. 3. The fall prevention shelf as set forth in claim 1 of the utility model registration claim, in which the mounting brackets are slidable. 4. The shelf is composed of a bottom frame that is placed on the horizontal beam, a hanging rod that is hooked to the retaining wall, and a protective fence that is connected to the bottom frame. The fall prevention shelf according to claim 1 of the utility model registration claim, wherein a support rod is provided protrudingly between the shelf and the shelf.