JPS6122092B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In the present invention, two resistance plates are inserted into a hole excavated by an earth auger, and then rotated and expanded into the undamaged soil on the opposite side to obtain the desired resistance. This invention relates to a stay anchor that seeks tension.

The structure will first be explained below with reference to the accompanying drawings. 1 is a flat plate surface in FIG. 1 and a side view in FIG. A square shaft hole 5 is drilled at one end of the line, and the circumferential surface on the opposite side is notched into a perfect circular arc surface of the planned amount using the center point of the square shaft hole as a reference point, the reason for which will be explained in detail later. do.

Next, for the purpose of increasing the pressure resistance on the flat plate surface, the resistor plate 1 is placed between the square shaft hole 5 and the opposing outer peripheral surface, and reaches the outer peripheral surface by a small amount from the part closer to the square shaft hole 5. At least, the ribs 2 are extruded in a direction radial from the square shaft hole 5, and furthermore, they extend obliquely upward from the middle part between the square shaft hole 5 and the outer peripheral surface, and the upper end thereof forms a corner of the resistance plate 1. A reinforcing plate holder 4 having a square shaft hole 5 is fixed to the upper side surface of the divided mortar-shaped reinforcing plate 3 which corresponds to the shaft hole 5 and is closely fixed to the rib 2 and the flat plate surface, respectively. . In the above, the square shaft hole 5 of the resistance plate 1 and the square shaft hole 5 of the reinforcing plate holder 4 must be in a state in which they exactly coincide on a line perpendicular to the flat surface of the resistance plate 1.

Next, the plan view in Figure 3 and the side view in Figure 4 are the same as those in Figure 1 above.
The resistance plate 1 shown in FIGS. 1 and 2 and the members integrated therewith have exactly the same structure,
In the present invention, these two resistance plates 1 each have a reinforcing plate 3.
Since it is constructed by integrally engaging the reinforcing plate 3 with its fixing surface in the opposite direction up and down, for the purpose of describing this in detail, I will intentionally illustrate the resistance plate 1 with the fixing surface of the reinforcing plate 3 facing downward. It is something. It should be noted that the number of ribs 2 should be able to be increased at any time depending on the need for pressure resistance, without necessarily limiting the number of ribs to three directions.

Next, with reference to the plan view in FIG. 5 and the side view in FIG. 6, the board 10 is in the same circular shape as the perfect circle before the circular notch is made with the square shaft hole 5 of each resistor plate 1 as the base point.
The board 10 insertion part is cut into a round bar shape at both ends on the center line to form a rotating part 11, and a washer 12 is fixed to the part that protrudes from the board 10 to rotate the two rotation angle shafts 6. The resistance plates 1, which are freely pivoted and have the reinforcing plate 3 facing downward, are inserted into one of them through the respective square shaft holes 5, and the respective square shaft holes 5 and the rotation angle pipes 6 are inserted. A resistance plate is fixed on the substrate 10 and housed within the circumferential surface of the substrate 10, and then on the other rotation angle shaft 6 is a resistance plate with the reinforcing plate 3 facing upward. 1 are inserted through the respective square shaft holes 5 and fixed, and these are also accommodated within the circumferential surface of the substrate 10 in the same manner as described above, so that the respective resistance plates 1 are brought into a state in which their flat surfaces are brought into close contact with each other. At this point, on the reinforcing plate holder 4 of the upper resistance plate 1, a regulating plate 9 is fixed to each side of the two rotation angle shafts 6 in order to keep them in an upright and parallel state. This allows the ring 8 to pass through.

In addition, 13 is a stop plate fixed to the rotation angle shaft 6 in order to regulate the lowering of the coupling ring 8 on the rotation angle shaft 6 on one side, and 7 is screwed to the upper end of each rotation angle shaft. Connecting female thread.

As described above, the two resistance plates 1 housed on the substrate 10 and within the circumferential surface of the substrate 10 by the two rotation angle shafts 6 and the coupling rings 8 are shown in the plan view of FIG. As shown in the side view of the figure, when the respective rotation angle shafts 6 are rotated by 180 degrees, the maximum resistance area of each resistance plate 1 is expanded outside the circumferential surface of the substrate 10.

In the above, the respective resistance plates 1 housed within the circumferential surface of the substrate 10 and rotated and expanded must not be obstructed by the two opposing rotation angle shafts 6 during their rotation. For this reason, each resistance plate 1 must be cut out as a circular arc surface within a range that avoids the opposing rotational angle shaft 6 with the square shaft hole 5 as the base point.

This concludes the explanation regarding the structure, and the construction state of the present invention and its effects will be explained below.

In the present invention, each resistance plate 1 is connected to a round hole drilled by an earth auger as shown in FIGS. 5 and 6.
is accommodated within the circumferential surface of the substrate 10, and
An upper pull rod 14 having an upper pull rod screw 15 screwed onto the upper end thereof is screwed to the connecting female thread 7 of each rotation angle shaft 6, and is placed on the bottom of the hole as shown in FIG. As shown in the figure, the rotation angle pipes 16 that are fitted to the rotation angle shafts 6 are lowered and fitted onto the rotation angle shafts 6 from the ground surface using the upper pulling rods 14 as guides, and the rotation angle pipes 16 are fitted on the rotation angle shafts 6 from the ground surface. 16 to rotate each resistance plate 1 180 degrees to spread its maximum resistance surface into the undamaged soil within the side wall of the excavation hole, and remove the rotation angle pipe 16 as shown in Fig. 11. As shown, the two upper pull rods 14 are converged near the ground surface into a connecting rod 18 that is integrated with the connecting metal fitting 17, and the upper excavated hole connected with the connecting metal fitting 17 with bolts is backfilled to complete all construction work. .

The present invention constructed in this manner has the connecting rod 18
An upward pulling load is applied to each resistance plate 1 through the rotation angle shaft 6 of the upward pulling rod 14, and each resistance plate 1 has a flat plate surface reinforced by the ribs 2, and this is further reinforced by a reinforcing plate 3. Since it has been reinforced, it has become an extremely rational stay anchor that exhibits strong and stable tension resistance.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the resistance plate 1 with the reinforcing plate 3 on top, Fig. 2 is a side view of the same, and Fig. 3 is the resistance plate 1.
Fig. 4 is a plan view of the same structure as shown in Fig. 4, but with the reinforcing plate 3 facing downward, and Fig. 4 is a side view of the same. Fifth
The figure is a plan view showing a state in which the reinforcing plate fixing surfaces of each resistance plate 1 are placed upside down and engaged with each other on the substrate 10 so that the entire plane is housed within the circumferential surface of the substrate 10, and FIG. 6 is the same as above. FIG. FIG. 7 is a plan view showing a state in which each resistance plate 1 can be rotated 180 degrees, FIG. 8 is a side view of the same, and FIGS. 9, 10, and 11 are explanations showing the construction state of the present invention, respectively. It is a diagram. 1... Resistance plate, 2... Rib, 3... Reinforcement plate, 4
... Reinforcement plate holder, 5 ... Square shaft hole, 6 ... Rotation angle shaft,
7... Connecting female thread, 8... Connecting ring, 9... Regulating plate, 10... Base board, 11... Rotating part, 12... Washer, 13... Stop plate, 14... Upper pull bar, 15
...Upper pull bar screw, 16...Rotation angle pipe, 17...
...Joining metal fittings, 18...Joining rod.

Claims (1)

[Claims] 1. Two resistance plates 1 are provided within the circumference of a substrate 10 that can be loosely inserted into a round hole drilled by an earth auger, with the ability to rotate around both ends on the center line. For stay anchors that are stored or expanded into undamaged soil on the side wall of an excavation hole to obtain tensile strength. On the flat plate surface of each resistance plate 1, ribs 2 are extruded in the radial direction around the square shaft hole 5, with the number and length corresponding to the required pressure strength. Furthermore, the reinforcing plate 3, which is divided into a mortar shape, is fixed on the rib 2 at a position suitable for the pressure resistance required, and the small diameter surface extending obliquely upward is fixed with an angular shaft. A reinforcing plate 4 having a hole 5 is fixed, and one of the resistance plates 1 is placed with the reinforcing plate fixing surface facing downward, and the other one resistance plate 1 is fixed with the reinforcing plate 3 fixing surface facing upward. The rotation angle shaft 6 is inserted commonly into the square shaft hole 5 and the square shaft hole 5 of the reinforcing plate holder 4, and the square shaft hole 5 is inserted into the square shaft hole 5, respectively.
The reinforcing plate support 4 is rotatably pivoted on the substrate 10 with the flat plate surfaces of the respective resistance plates 1 in close contact with each other, and is integrated with the resistance plate 1 located above. The stay anchor utilizes an earth auger drilling hole and is characterized by a structure in which two rotation angle shafts 6 are engaged by a coupling ring 8.