JP3230213U - Drilling device for rockfall prevention fence support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To run a foundation base to a destination using a rail on a slope as a guide, and to stabilize a telescopic arm extended by an outrigger and a built-in guide pillar, and to bury a large-diameter pillar. Provided is a drilling device for rock fall prevention fence columns. SOLUTION: A drilling device for a rockfall prevention fence support is provided on a swivel seat 9 on a foundation base 5 traveling by a wheel 6 that holds a rail 3 provided at the head end of each pile 2 at a dotted position on a slope 1. It is supported by a telescopic arm 11 that is supported by a support shaft 12 and undulates and swings by a cylinder 13, a guide pillar 16 that is connected to the tip of the telescopic arm 11 by a wire 18, and a rotary drive machine 23 that is slidable on the rail 21 of the guide pillar 16. It is composed of a hammer rim D having an excavation bit 26 at the lower end of the piston case 25, and an insertion and buried drilling hole for a rockfall prevention fence column is obtained as the hammer rim D is pulled out. [Selection diagram] Fig. 1

Description

The present invention relates to a drilling device for a rockfall prevention fence support that drills a hole for burying a rockfall prevention fence support.

It is known to build a rockfall prevention fence to catch rockfalls when there are roads, buildings, railroads, etc. under steep slopes where rockfalls are expected.

As this rockfall prevention fence, there is a method of burying a concrete retaining wall deep in the ground or laying a metal net on the slope to support the net on the slope.

The former requires a large amount of materials as well as the large-scale construction, but the latter method is relatively difficult to construct and does not require a large amount of materials.

Therefore, the latter method is often adopted, but the problematic point is the carry-in, installation, and operation of a drilling machine for digging a hole for inserting (embedding) a support column of the net. ..

However, if the rockfall prevention fence is provided on the middle of the slope where the distance from the place where the rockfall occurs is short, the impact of the rockfall can be reduced, and the strength of the support is not so required.

However, in order to carry in or install a drilling machine in such a place, it is necessary to flatten the work site, which not only requires a large construction cost but also prolongs the construction period. There was also a problem.

Therefore, in order to eliminate the above-mentioned problem, there is a drilling method for a rockfall prevention fence support as shown in Patent Document 1.

Japanese Patent No. 5689886

By the way, according to the method of Patent Document 1, after the traveling foundation base on the rail supported by the support pile on the slope is moved to the working position by the operation of the pilot vehicle, the drive provided in the support device of the foundation base is provided. A drilling machine is driven by the device to drill holes, and a pile is inserted into the drilling accompanying the drilling.

However, since the insertion pile is a small diameter pipe or the like, a large bearing capacity cannot be guaranteed.
In addition, since the foundation base of the support device is lightweight, it is not stable, and since a lightweight pipe is used, it is not possible to build a heavy concrete pile or the like.

That is, there is a problem in requiring a large strength (bearing capacity).
Therefore, the present invention is to provide a drilling device for a rockfall prevention fence support that solves the above-mentioned problems.

In order to solve the above-mentioned problems, this device embraces a rail provided by supporting the head end of each pile provided at scattered positions on the slope to a destination where rockfall is expected, and this rail. A foundation base provided so as to run on the wheels provided as described above, a swivel seat provided so as to be swiveled by a motor on the foundation base, and the swivel seat supporting the end via a support shaft and undulating by a cylinder. A telescopic arm provided so as to swing and expand and contract, an out trigger provided so as to stabilize the foundation base with respect to the slope, and a built-in between the lower side of the tip of the telescopic arm and the above slope. The guide pillar, the piercing piece provided on the lower end of the guide pillar, the winding and rewinding wire for connecting the telescopic arm and the upper end of the guide pillar, and the vertical surface of the guide pillar are provided. An outer diameter is outside the piston case on the outer circumference of the lower end of a slider that is slidably engaged with a rail and is provided so as to move up and down, and a lower end of a piston case that detachably supports the upper end of a rotary drive provided on this slider. It consists of a hammered rim having an excavation bit with a diameter larger than the diameter, and adopts a configuration characterized in that when the hammered rim is pulled out, an insertion and buried drilling hole for a rock fall prevention fence column is obtained.

As described above, according to the drilling device for burying the pillars of the rockfall bar fence of the present invention, the foundation base was driven to the destination where rockfall was expected using the rail on the slope as a guide, and was extended by the out trigger. In addition to stabilizing the telescopic arm and the built-in guide pillar, excavate from the slope to the ground while driving the hammer rim with a rotary drive machine, and concrete piles and metal piles in the drilled holes due to the removal of the hammer rim after excavation. A large-diameter pillar can be buried as a tough rock fall prevention fence.

Therefore, there is a peculiar effect that the inconvenience caused by the impact of a large rock fall can be eliminated.

In addition, the combination of the telescopic arm and the guide column makes it possible to use a hammered rim with a large diameter and a long shaft length.

Further, the piercing piece provided at the lower end of the guide pillar can provide stable support for the lower end of the guide pillar.

It is a partial notch side view which shows the drilling apparatus of embodiment of this invention. It is a partial notch enlarged side view which shows the main part of the same above. It is a vertical sectional side view in which a pillar pile is inserted and buried in a hole.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 3 of the accompanying drawings.
1 in FIG. 1 is a steep slope where rockfall is expected, and when there are roads, buildings, railroads, etc. under this slope 1, a rockfall prevention fence (described later) that catches the rockfall of stones existing on the slope 1 is installed. Need to build.

As the above-mentioned rock fall prevention fence, a wire mesh or a wire is provided on the slope 1 so as to hold a concrete or metal support column C inserted and buried in a hole B provided from the slope 1 toward the ground. It has become.

Further, as shown in FIG. 1, piles 2 are built at positions scattered on the arrangement line of the columns C on the slope 1, and rails 3 are supported at the head ends of the piles 2.

If the head ends of the parallel piles 2 are connected to each other by a connecting cross member 4, the piles 2 can be reinforced.

Further, wheels 6 for embracing the rails 3 provided on both the lower surface high place side and the low place side of the foundation base 5 from above and below are provided so that the foundation base 5 can travel.

The above-mentioned foundation base 5 is adapted to drive a towing vehicle (not shown) that is connected and travels in the left-right direction by a rail 3.

Further, a swivel seat 9 that swivels via a swivel shaft 8 that is reversibly rotated by a motor 7 is provided on the foundation base 5, and the lower end of the telescopic arm 11 undulates and swings on the swivel seat 9. An arm 11 that is supported via a support shaft 12 and that expands and contracts by expanding and contracting the cylinder, winding and rewinding the wire, etc. (not shown) is provided.

As the undulating swinging means of the telescopic arm 11, both ends of the cylinder 13 are connected to the swivel seat 9 and the middle of the telescopic arm 11 via a support shaft 14 as shown in FIG.

Further, an outrigger 15 is provided between a low place and a high place on the outer peripheral surface of the motor 7 to stabilize the foundation base 5 with respect to the slope 1 and ensure a stable standing of the telescopic arm 11. There is.

Further, a guide pillar 16 that faces downward from below the tip of the telescopic arm 11 is arranged, and is wound around a pulley 17 provided at the upper end of the guide pillar 16 and the tip of the telescopic arm 11 and rewound via a wire 18. The guide pillar 16 is built in, and the guide pillar 16 is pierced into the slope 1 through a piercing piece 19 provided at the lower end of the guide pillar 16 so that the lower end of the guide pillar 16 is stably supported by the slope 1.

Further, a rail 21 is provided on the vertical surface of the guide pillar 16, and a slider 22 that slides in the vertical direction is engaged with the rail 21, and a rotary drive machine 23 such as a motor is supported by the slider 22.

The rotary drive 23 is connected to a take-up / rewind wire 24 provided at the upper end of the guide pillar 16 so that the rotary drive 23 moves up and down.

The upper end of the hammer rim D shown in FIG. 2 is detachably connected to the rotary drive machine 23 (via a chuck or the like).

The above-mentioned hammered rim D is known and is not shown in detail because it is known, but the outer diameter provided at the lower end of the hollow piston case 25 is composed of an excavation bit 26 having a diameter larger than the outer diameter of the piston case 25. While rotating the piston case 25, the cylindrical protruding shaft 27 at the upper end of the piston case 25 is excavated by the excavation bit 26 detachably supported by the rotary drive machine 23 from the ground to the ground as shown in FIG. The hole B is formed.

At the time of excavation of the above-mentioned drilling hole B, air is pumped from the rotary drive machine 23 side through the protruding shaft 27 and then through the piston case 25 toward the drilling bit 26, and the drilled object becomes the drilling B by the pumping air. It is sent upward from the gap with the outer circumference of the piston case 25 and discharged.

Then, the piston case 25 is pulled out by winding the wire 24 at the end of the excavation, so that the hole B is formed as shown in FIG.

A support C such as a concrete pile or a large-diameter pipe is inserted into the hole B as a rockfall prevention fence A.

The insertion column C fixes the column C in the ground by a hardening material F such as mortar filled (inflowing) into the drilled hole B.

As described above, using the telescopic arm 11 on the foundation base 5 traveling with the rail 3 on the slope 1 as a guide, the hammered rim D forms a hole B in the ground from the slope 1, and the formation of the hole B is completed. The rock fall prevention fence A can be formed by removing the hammered rim D later and inserting and burying the support column C in the drilling hole B accompanying the removal.

A Rockfall prevention fence B Drilling hole C Strut D Hammadrim 1 Slope 2 Pile 3 Rail 4 Connecting cross member 5 Foundation base 6 Wheel 7 Motor 8 Rotating shaft 9 Swing seat 10 Cylinder 11 Telescopic arm 12 Support shaft 13 Cylinder 14 Support shaft 15 Out trigger 16 Guide pillar 17 Pulley 18 Wire 19 Piercing piece 21 Rail 22 Slider 23 Rotating drive 24 Wire 25 Piston case 26 Excavation bit 27 Protruding shaft

Claims (1)

A rail provided to support the head end of each pile provided at scattered positions on the slope to the destination where rockfall is expected, and a foundation provided to run by wheels provided to embrace this rail. A base, a swivel seat provided to be swiveled by a motor on the base base, and a telescopic arm provided to support the end of the swivel seat via a support shaft, and to undulate and expand and contract by a cylinder. An outrigger provided so as to stabilize the foundation base on the slope, a guide pillar built between the lower side of the tip of the telescopic arm and the top of the slope, and the guide pillar provided at the lower end of the guide pillar. The winding and rewinding wire that connects the piercing piece to the slope, the telescopic arm and the upper end of the guide pillar, and the rail provided on the vertical surface of the guide pillar are slidably engaged to move up and down. And a hammered rim having an outer diameter larger than the outer diameter of the piston case on the outer periphery of the lower end of the piston case that detachably supports the upper end of the rotary drive machine provided on the slider. A hole drilling device for rock fall prevention fence columns, which is characterized by obtaining holes to be inserted and buried in rock fall prevention fence columns when the hammered rim is pulled out.

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