JPS6233777Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a panel stopper pin in an earth retaining device for an excavated trench.

Recently, sheet piles have been used as earth retaining shoring to prevent landslides on the inner walls of trenches excavated to bury water and sewer pipes, gas pipes, electric wires, telephone cables, etc. Earth retaining support that can be constructed without entering the excavated trench, and in which earth retaining panels and sheet piles are alternately set in sequence in the longitudinal direction of the excavated trench without measuring the set interval of the earth retaining panels in the longitudinal direction of the excavated trench. technology was developed. (Tokugansho
No. 57-112254) This earth retention shoring consists of opposing earth retention panels 3 connected by rotatable and detachable jacks 2 to the inner wall of a trench 1 excavated to a predetermined depth as shown in Figure 1. Erect and secure, then each earth retaining panel 3
A locking fitting 6 (see Fig. 2) provided at one side end of the band-shaped guide panel 5 is fitted into a locking groove 4 provided at one side end, and one side end of the guide panel 5 is secured to the earth retaining panel 3.
The earth retaining panel is connected to the middle and high part, and then the locking groove 4 at the other end of the opposing earth retaining panel 3 connected to the locking metal fitting 6 provided at the other end of the guide panel 5 with the jack 2 is fitted. The panel 3 is built in and the other end of the guide panel 5 is connected to the middle and high part of the retaining panel 3 to support the guide panel 5 horizontally, and then a lightweight The steel sheet pile 8 is inserted, and then the gap between the excavated trench 1, the retaining panel 3, and the lightweight steel sheet pile 8 is backfilled, and the above steps are repeated as the trench 1 is excavated.

By the way, the earth retaining device used in this earth retaining shoring includes earth retaining panels 3 facing each other connected by jacks 2, a guide panel 5 having a guide frame 7 on its outer surface, and a lightweight steel sheet pile 8 inserted into the guide frame 7. In the earth retaining device, the locking metal fittings 6 at both ends of the guide panel 5 are fitted into the locking grooves 4 at the side ends of the earth retaining panel 3, and the guide panel 5 is connected to the middle and high part of the earth retaining panel 3. In order to do this, as shown in FIG.
A plurality of keyholes 10 and circular pinholes 10' are drilled at equal intervals in the vertical direction in the middle and high part of 9', and a stopper pin 12 with a key block 11 is inserted into the keyholes 10 and pinholes 10' of the required height. Insert the locking metal fitting 6 of the guide panel 5 onto this stopper pin 12.
I support it by posting it.

Therefore, in order to prevent the stopper pin 12 from slipping out of the keyhole 10 and pinhole 10', it is necessary to rotate the stopper pin 12 immediately after insertion to lock the key block 11 to the periphery of the keyhole 10.

Further, the stopper pin 12 having the key block 11 is troublesome and expensive to manufacture, and moreover, the stopper pin 12 is attached to the L-shaped member 9 constituting the locking groove 4.
Drilling the keyhole 10 for inserting the keyhole 2 is extremely troublesome.

The present invention was developed to solve these problems, and it allows circular pin holes to be drilled in the L-shaped members that make up the locking grooves at both ends of the retaining panel, without the need to drill cumbersome key holes. However, it is an object of the present invention to provide a panel stopper pin which can be automatically prevented from coming off by simply inserting it therein, and which is easy to manufacture.

An embodiment of the panel stopper pin according to the present invention will be described below with reference to FIG. The guide panel 5 is attached to the earth retaining panel 3 by fitting the locking fittings 6 at the side ends of the guide panel 5 into the locking grooves 4 at the side ends of the earth retaining panel 3.
A panel stopper pin 1 that supports a guide panel 5 by stopping a locking metal fitting 6 fitted in a locking groove 4 in an earth retaining device for an excavated trench that is connected and supported at a middle or high part.
3 is bent into a U-shape, one side 14 is slightly longer than the longitudinal width of the outer surface of the locking groove 4 at the side end of the retaining panel 3, and the other side 15 is approximately 1/2 of the one side. A locking rod 16 is perpendicularly perpendicular to the tip of the other side 15, and the intermediate portion thereof is joined by welding to be integrated.

Panel stopper pin 1 of the present invention having such a structure
3 are a plurality of circular pin holes drilled at equal intervals in the vertical direction in the middle and high parts of the inner and outer L-shaped members 9 and 9' that constitute the locking grooves 4 at both ends of the earth retaining panel 3. Place the other short side 15 outward as shown in Fig. 4, insert the long side 14 to the base end of the pin hole 10' at the desired height, and release your hand. By this, the other side 15 and the locking rod 1 at its tip
6 rotates and falls around the pin hole 10' where one side 14 is held due to its own weight, the other side 15 comes into contact with the outer surface of the L-shaped member 9, and the lower part of the locking rod 16 is attached to the L-shaped member. It enters into the locking groove 4 between 9 and 9'.
Therefore, the locking rod 16 is automatically locked to the inner end of the L-shaped member 9, so that the panel stopper pin 13 is reliably prevented from coming off.

On one side 14 of the panel stopper pin 13, a locking fitting 6 of the guide panel 5 fitted from above into the locking groove 4 is placed, as shown by the chain line, so that the guide panel 5 is supported.

The panel stopper 13 of the above embodiment has a locking rod 1 at the tip of the short other side 15 bent in a U-shape.
6 are vertically orthogonal to each other and the intermediate portions are welded together to form an integral body, but the invention is not limited to this, and as shown in FIGS. Provided on the left and right opposite sides, and the other short side 1
In this example, a locking rod 16a is integrally provided below at the tip of each side 14 so as to be perpendicular to the U-shaped surface, and in this example, the middle of one side 14 and the other side 15 having the same length is
It is also possible to form two panel stopper pins 13a and 13b by bending the two panel stopper pins 16a to opposite sides of the letter-shaped surface and providing a locking rod 16a. In this case, both panel stopper pins 13a, 13b
The long side of is connected to the locking grooves 4 on both sides of the retaining panel 3.
When the pins are individually inserted into the circular pin holes 10' of the inner and outer L-shaped members 9 and 9' constituting the inner and outer sides up to the base end and released, the other side 15 and its tip are locked as in the previous embodiment. The rod 16a rotates and falls due to its own weight, the other side 15 comes into contact with the outer surface of the L-shaped member 9, and the locking rod 16a enters the locking groove 4 between the L-shaped members 9 and 9' and is locked. The rod 16a automatically connects the L-shaped member 9.
The panel stopper pin 13
a, 13b are securely prevented from coming off.

As can be seen from the above explanation, if the panel stopper pin of the present invention is used to support the locking fittings at the side ends of the guide panels that are fitted into the locking grooves at the side ends of the earth retaining panels in the earth retaining device, the Since it is sufficient to simply drill a simple circular pin hole in the inner and outer L-shaped members constituting the locking groove of the panel, it does not require much effort. In addition, the panel stopper pin of the present invention is automatically and reliably locked by simply inserting it into the circular pin hole bored in the inner and outer L-shaped members that make up the locking groove. The guide panel supported by this is safe. Furthermore, the panel stopper pin of the present invention is made by bending a wire rod into a U-shape with long and short sides, and welding the middle of the short wire perpendicular to the tip of the short side, or by bending the wire rod into a U-shape with the same length on both sides. Since it can be manufactured simply by bending the middle part of the pin perpendicular to the U-shaped surface, it has the advantage of being easier and cheaper to manufacture than conventional stopper pins with key blocks.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the earth retaining shoring for an excavated trench, and Figure 2 shows the side of the locking groove at the side end of the earth retaining panel and the side of the guide panel that fits into it in the earth retaining device used for the earth retaining shoring. A perspective view showing the end locking metal fitting and the stopper pin that supports this locking metal fitting.
Similar to the figure, a perspective view showing an embodiment of the locking groove at the side end of the earth retaining panel, the locking fitting at the side end of the guide panel that fits into the locking fitting, and the panel stopper pin of the present invention that supports the locking fitting. FIG. 4 is a perspective view showing the panel stopper pin of the present invention in use, and FIGS. 5a and 5b are perspective views showing other embodiments of the panel stopper pin of the present invention. 1... Excavation groove, 3... Earth retaining panel, 4... Locking groove, 5... Guide panel, 6... Locking metal fitting, 1
3, 13a, 13b...Panel stopper pin,
14...One side, 15...Other side, 16, 16a
...Locking rod.

Claims (1)

[Scope of utility model registration request] In an earth retaining device for an excavated trench, a locking groove at the side end of an earth retaining panel built facing the inner wall of the excavation trench is fitted with a locking fitting at the side end of the guide panel. A panel stopper pin that supports the guide panel by stopping the locking fitting fitted inside the U
It is bent into a letter shape and one side is slightly longer than the front and back width of the locking groove at the side edge of the earth retaining panel, the other side is approximately half the length of the one side, and the tip of the other side is A panel stopper pin for earth retention equipment for excavation ditches, in which a locking rod is integrally provided perpendicular to a U-shaped surface.