JPS5910195Y2 - Equipment for raising cut beams in earthen retaining structures - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for raising the edge of a cut beam in an earth retaining area for use in preventing the collapse of an excavated trench.

FIG. 1 shows an example of a conventional device for raising the edge of a stub in a shimdome.

In this figure, 1 is a mounting plate, 2 is a cover plate, 3 is a raised plate, 4 is a notch to which the cover plate 2 is fixed, 5 is a sheet pile, and 6 is an excavation groove.

As shown in FIG. 1, the cutting beam 4 was attached to the stand-up 3 by an attachment plate 1 fixed to the backing plate 2.

Note that the sheet piles 5, the uprights 3, etc. are also installed on the opposite side of the excavated groove 6, and the uprights 3 are suspended by ropes, but these are not shown in the figure.

Moreover, the cutting beam 4 is designed to be able to expand and contract, and is used by being expanded so as to press the sheet piles 5 on both sides using a jack or the like.

In the case of the above structure, if the sheet pile 5 is used directly without using the upright 3, the attachment plate 1 will be an obstacle, and it will be impossible to install the cut beam 4 unless the attachment plate 1 is removed from the support plate 2. There was a drawback.

This invention was made in order to eliminate the drawbacks of the above-mentioned conventional erecting equipment, and by means of a rotating rod attached to the backing plate of the cut beam, it can be used either for erecting or directly on sheet piles. It is also possible to use it.

This invention will be explained in detail below with reference to FIGS. 2 to 6.

Figure 2 shows an example of this invention, and shows how it is installed when used in a sit-up 3. Figures 3 and 4 are enlarged views of the main parts of Figure 2. be.

In these figures, reference numeral 7 denotes a rotatable mounting rod, which is attached to the cover plate 2 through a guide pipe 8.

As shown in FIG. 4, the mounting rod 7 is raised perpendicularly to the backing plate 2 and is mounted on the riser 3.

9 is a rotation prevention piece, and by attaching this rotation prevention piece 9 and the attachment rod 7 at right angles, even if the attachment rod 7 tries to rotate upward, the rotation prevention piece 9 is stopped by the cover plate 2, so that the cutting burr 4 is attached to the rack 3 without falling off.

Note that the dotted line portion in FIG. 3 will be described later.

FIG. 5 shows another embodiment of this invention, and shows the installation situation when the cutting beam 4 is installed directly on the sheet pile 5.

Since the supporting rod 7 rotates in parallel with the cover plate 2 and is folded, the cover plate 2 can be directly installed on the sheet pile 5.

FIG. 6 shows still another embodiment of this invention, and shows the installation situation when the cut beam 4 is installed on a dedicated sheet pile 10 that is compatible with the attachment device of this invention.

The shear 4 can be installed by attaching the attachment rod 7 to the hook 11 attached to the dedicated sheet pile 10.

The function of the anti-rotation piece 9 is the same as when it is attached to the riser 3 in FIG. 2.

In this embodiment, the support rod 7 may come off in the direction of arrow C. To prevent this, both ends of the support rod 7 should be further bent outward as shown by the dotted lines in FIG. Bye.

In the above embodiment, the anti-rotation piece 9 was provided at the center of the supporting rod 7, but it may be placed at any arbitrary position.

Further, the guide pipe 8 may also be a separate piece and may be welded to the upper end of the backing plate 2, or the upper end of the backing plate 2 may be bent and processed into a pipe shape, in short, the supporting rod 7 can be rotated freely. It is sufficient if it can be attached to.

As explained above, this invention fixes a cover plate to the tip of the cutting edge of an earth retaining device for an excavated trench, and attaches a supporting rod with both ends of the rod bent at the upper end of the plate so that it can rotate freely. Since I fixed the anti-rotation piece to the mounting rod, ■
It can be easily installed in any of the following ways, such as when installing it vertically, when installing it on a sheet pile, and when installing it on a dedicated sheet pile, so the increased versatility of the cut bar can reduce work time, etc. has advantages.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional device for raising a cut beam in an earth retaining structure, Fig. 2 is a perspective view showing an embodiment of this invention, and Figs. 3 and 4 are similar to those shown in Fig. 2. An enlarged view in the direction of the A arrow and an enlarged view in the direction of the B arrow showing the main parts enlarged, FIG. 5 is a perspective view showing another embodiment of this invention, and FIG. 6 shows still another embodiment of this invention. FIG. In the figure, 2 is a cover plate, 3 is a raised plate, 4 is a cutout, 5 is a sheet pile, 6 is an excavation groove, 7 is an attachment rod, 8 is a guide pipe, 9
10 is a rotation prevention piece, 10 is a dedicated sheet pile, and 11 is a hook.

Claims (1)

[Scope of utility model registration request] A backing plate is fixed to the tip of the cutting bar, and a supporting rod formed by bending both ends of the rod is rotatably provided at the upper end of this backing plate. What is claimed is: 1. A device for raising a cut beam in an earth retaining structure, characterized in that a rotation prevention piece protruding toward the cut edge is fixed thereto.