JPS63272815A - Penetration work of screw anchor - Google Patents

Abstract

PURPOSE:To simplify burying operation of a screw anchor by penetrating the screw anchor by a penetrator attached to the lower end of an auger. CONSTITUTION:A screw anchor 1 is supported by a penetrating tool 6 fixed to the lower end of an auger 12 and penetrated into the ground, and a rod 14 for guys is attached to the screw hole of the angular column of the anchor 1. The screw anchor 1 can thus be very simply buried into the ground, and the guy of a pole can also be connectedly supported on the rod 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of screwing into the soil a screw anchor that supports branch lines such as utility poles underground.

(Prior art) As shown in Figure 14, the screw anchor is screwed into the soil using a rotary drive device (b) installed at the tip of the boom (a).
From this, a hole-drilling pole-erecting car with an auger screw (C) on the outer periphery and a hanging auger (E) with a bit (D) at the lower end was used, and the auger (E) part of this hole-drilling pole-erecting car was used. Remove it from the rotary drive device (b) by removing the pin (b), and fix the upper end of the rectangular cylindrical screw pipe (t) to this rotary drive position (b). ), insert the rod (su) of the screw anchor (chi), fit the lower end of the pipe (g) to the outer periphery of the square column part (ru) of the screw anchor body' ( ), and drive the above-mentioned rotation of the hole-drilling pole-erecting car. The device (B) is operated to screw the screw anchor (H) into the soil from the desired ground surface.

In this case, it may be possible to attach the screw pipe and put (to) without removing the auger (e) from the rotary drive device (b), but the hole drilling pole construction vehicle itself is tall and the screw pipe (
The auger (g) is usually long, about 3 marks long, so if you attach it as is, there is a risk that the electric wires or communication lines above may get caught, so you will have to remove the auger (h) part.

(Problems to be Solved by the Invention) However, the pin (H) of the hole-drilling pole erector is often rusted and cannot be removed easily, and the auger (H) part cannot be removed easily. Insert the lower end of the (water) into the ground and stand it upright, then remove the pin (f) and remove the auger (h).Currently, the road surface is being turned into asphalt, and there are few exposed areas of soil. Therefore, it may be necessary to use an auger to find exposed areas for soil removal.

As mentioned above, it takes a lot of effort to remove the auger (e) part of the hole-drilling pole-erecting car.

(Means for Solving the Problems) Therefore, the present invention provides a method of screwing a screw anchor into the soil without removing the auger portion of the above-mentioned digging pole erecting vehicle.

The specific structure of the present invention is to provide a cooling tool consisting of an upper part that covers and can be fixed to the lower end of the auger screw of a drilling pole-erecting vehicle, and a lower part that can freely support the upper end of the screw anchor; The cooling tool is fixed to the lower end of the auger screw of the hole-drilling pole-erecting car using a screw anchor having a prismatic part on the upper end of the anchor body that has blades on the outer periphery and a screw hole for rod attachment on the upper surface. , Support the screw anchor on a cooling tool, rotate the auger screw of this hole-drilling pole construction vehicle, screw the screw anchor into the soil, and attach the rod for the branch line to the screw hole. It is a construction method.

(Function) The above-mentioned cooling tool transmits the rotation of the auger screw of the hole-drilling pole erecting vehicle to the screw anchor. We will continue to promote this. Then, before the upper end surface of the prismatic part of the screw anchor enters the soil, the rod is fixed using the screw hole, and the rod is then inserted into the cooling tool and the screw anchor is screwed deep into the soil.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

First, to explain the screw anchor and cooling tool used in this invention, the screw anchor 1 has two screw blades 3 and 3 on the outer periphery of the screw main body 2, as shown in FIG. A prismatic portion 5 is provided at the upper end, and the upper surface of the prismatic portion 5 has a threaded hole (not shown) for attaching a rod. 9 and 1O show a cooling tool 6.6', and this cooling tool 6 or 6' has a socket part 7 on its upper part that covers the bit of an auger of a drilling pole erecting vehicle and can be fixed to the auger. The lower part continuing from the socket part 7 has a fitting part 8 having a fitting hole into which the prismatic part 5 of the screw anchor 1 can be fitted. The fitting portion 8 is short in the cooling tool 6 shown in FIG. 9 and long in the cooling tool 6' shown in FIG. Further, reference numeral 9 denotes a bolt screwed onto the outer periphery of the socket portion 7.

Next, the cooling method of the present invention will be explained based on FIGS. 1 to 7.

First, a hole 11 with a depth of about 30 dll is dug on the ground surface, the socket part 7 of the cooling tool 6 is placed over the bit part 13 at the lower end of the auger part 12 of the drilling pole erector, and the bolt 9 is inserted from the outer periphery. Tighten to secure the cooling tool 6 to the lower end of the auger section 12. Then, the square column part 5 of the screw anchor 1 is fitted into the fitting part 8 of the cooling tool 6, and the screw anchor 1 is attached to the cooling tool 6, and the lower end of the screw anchor 1 is attached to the bottom of the hole 11 as shown in FIG. Just like that, auger part 12
Rotate.

As a result, the screw anchor 1 rotates, and the screw blade 3 propels the screw anchor 1 vertically into the soil, pushing the screw anchor 1 into the hole 1 as shown in FIG.
buried underground. In this manner, the other screw anchors 1 are also buried, and the lower end of the rod 14 is screwed into the screw hole in the upper end surface of the prismatic portion 5 of one of the screw anchors 1, as shown in FIG.

Next, remove the cooling tool 6 from the lower end of the auger part 12 of the above-mentioned drilling pole erecting vehicle, and insert the long cooling tool 6' with the fitting part 8 so as to cover the bit 13 at the lower end of the auger part 12. Fixed to. Then, the rod 14 attached to the screw anchor 1 is inserted into the fitting hole of the fitting part 8 of this cooling tool 6'.
Insert the screw anchor 1 into the inner periphery of the lower end of this fitting hole.
The screw anchor 1 is rotated by rotation transmission of the cooling tool 6' by rotating the auger part 2 as shown in FIG. Bury deeply. The other screw anchor 1 is screwed in the same way, and the hole 11 is tightened as shown in FIG.
The two screw anchors 1.1 are buried in the soil below the holes 11 with only the rods 14.14 protruding inside. Thereafter, these rods 14 and 14 are brought together and attached to the connecting plate 15 with nuts 16 and 16, respectively, and the lower end of the rod 18 having the simple 17 at the upper end is attached to the connecting plate 15 to backfill the hole 11, as shown in FIG. As shown in the figure, the upper part of the rod 18 is made to protrude above the ground surface, and the other part is buried in the soil.

In this way, the branch line is connected to the simple 17 at the tip of the rod 18.

FIG. 11 shows that one screw anchor 1 is buried in the soil in the same manner as in the above embodiment, and a joint member 19 is attached to the upper end of the rod 14 connected to the prismatic portion 5 of the screw anchor 1.
A rod 21 having a simple 20 at the upper end is connected through the .

In addition, in FIG. 12, two screw anchors 1 are installed in parallel in the soil as in the above embodiment, the upper ends of each rod 14 of the two screw anchors 1 are connected via a plate 22, and the lower ends are attached to the plate 22. A branch line (not shown) is connected by a simple 17 at the upper end of the rod 18, and when the branch line is tensed, the rod 18 moves in the soil from the end of the material connecting to the plate 22 and tilts in the direction of the branch line.

In the above embodiment, when embedding the screw anchor 1, the cooling tool 6 with a short fitting part 8 was used first, and then the cooling tool 6' with a long fitting part 8 was used. Of course, a long cooling tool 6' may also be used.

(Effects of the Invention) This invention has the above-mentioned configuration, and since there is no need to remove the auger part of the digging pole erecting vehicle as in the past, the work is extremely easy. The work of embedding a screw anchor is extremely simple because the screw anchor is attached to the lower end of the embedding tool and the auger part is rotated to screw the screw anchor into the soil. Moreover, since the auger of the hole-drilling pole-erecting vehicle was used as is, the screw anchor was made smaller, and the rod was made removable so that it could be attached later.

In this way, the screw anchor itself is small, and since the screw anchor is buried perpendicular to the ground surface, the screwing accuracy is high, and it can be buried in the desired location, making it possible to bury multiple screw anchors close together in the soil. It can be twisted. In addition, multiple screw anchors are buried close together in this way, each rod of each screw anchor is connected to a connecting plate in the soil, and other upper rods are connected and protruded above the ground surface from this connecting plate. , when a branch line is connected to the upper end of this upper rod, the upper rod will tilt due to the tension of this branch line, but since the rod is short, it will move less during movement, and when the branch line is taut, it will move or bend sufficiently, making it possible for the conventional rod to be long. Compared to this, the rod does not bend over a long period of time, and the branch line does not loosen even after a long period of time.Moreover, if multiple screw anchors are buried close together, the soil will be sticky, so the area around the anchors will not bend as shown in Figure 13. (The shaded area a in the figure) becomes a resistance, and the bearing capacity of the soil increases.
It has been experimentally confirmed that the bearing capacity of the soil is four times greater.

[Brief explanation of the drawing]

Figures 1 to 7 are explanatory sectional views showing the order of the pasting method of this invention, Figure 8 is a front view of a screw anchor used in this invention, and Figure 9 is a cooling tool used in this invention. Front view, Figure 10 is a front view of the cooling tool with a long fitting part,
FIG. 11 is a cross-sectional view showing one screw anchor buried according to the present invention, FIG. 12 is a cross-sectional view showing two screw anchors buried according to the present invention, and FIG. 13 is a cross-sectional view showing two screw anchors buried according to the present invention. Figures 14(A) and 14(B), which are distribution maps of soil that affect the bearing capacity of the soil, are explanatory diagrams showing a cooling construction method for screw anchors using conventional drilling columns. In the figure, 1 is a screw anchor, 3 is a screw blade, 5 is a prism part, 6 is a cooling tool, 7 is a socket part, 8 is a fitting part, 11 is a hole, 12 is an auger part, 13 is a bit, 1
4 is a rod.

Claims (1)

[Claims] A screwing tool consisting of an upper part that covers the bit at the lower end of the auger screw of a hole-drilling pole-erecting car and can be fixed thereon, and a lower part that can freely support the upper end of the screw anchor, and has a screw blade on the outer periphery of the anchor body and a rod attached to the upper surface. Fix the screw anchor to the lower end of the auger screw of the hole-drilling pole erecting vehicle using a screw anchor having a square column part with a screw hole at the upper end of the anchor body, support the screw anchor on the screw anchor, and A screw anchor screwing method characterized by rotating an auger screw of a hole-drilling pole erecting vehicle to screw the screw anchor into the soil, and attaching a branch rod to the screw hole.