JPH0765449B2 - Drilling device for anchors on sloping ground - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor drilling device for protecting a slope on a steep slope, and particularly to an anchor drilling device that does not require a scaffold for drilling a slope. Perforation device.

[Conventional technology]

There are a rock anchor method and a frame method as construction methods for protecting slopes on steep slopes.

The lock anchor method is to insert a tensile material into a hole drilled almost at right angles to the slope, inject cement milk and solidify it to fix it to the rock, then tighten the ground with the tensile material as an anchor, and on steep slopes. It prevents the collapse.

Further, as shown in FIGS. 6 and 7, the frame construction method is such that the concrete frames 1 are arranged in a grid pattern on the slope of a steep slope, and the slope pipes from the mouth pipe 3 provided at each intersection 2 to the ground 4 are sloped. After making a hole 5 at a right angle to a desired depth by a boring machine (not shown), a tensile material 6 is inserted into the hole 5 and cement milk 7 is injected to consolidate the ground 4, and the anchor 8 As a concrete example, the concrete frame 1 is clamped and fixed on the slope to protect the slope.

However, in the conventional lock anchor construction method and frame construction method described above, when a hole required for forming the anchor is bored by a boring machine, as shown in FIG. 8, a pipe is formed on the slope of a steep slope. The scaffold 9 is assembled, a hole drilling machine 10 is installed on the scaffold 9, and holes for anchors are drilled in the ground 4 facing the intersections of the lattice concrete frame 1.

[Problems to be solved by the invention]

In the conventional anchor hole drilling method as described above, since a scaffold is required, much labor and time are required for preparation such as assembling thereof, and further, movement of the hole drilling machine 10 on the scaffold 5 and There is a problem that a lot of manpower is required for the drilling work and the drilling cost becomes high.

[Object of the Invention]

The present invention has been made to solve the above-mentioned conventional problems, and makes it possible to eliminate the need for a scaffold and to increase the efficiency of drilling work on steep ground, labor saving, and cost reduction. An object of the present invention is to provide an anchor hole drilling device for an inclined ground.

[Means for solving problems]

An anchor drilling device for an inclined ground according to the present invention includes a boom that can be depressed by a mobile crane, a guide rail that is attached to a side surface of the boom along the longitudinal direction thereof, and a winch of the mobile crane that is attached to the guide rail. A first elevating / lowering body to be elevated and lowered, a pedestal supported by the first elevating and lowering body so as to be swingable in vertical and horizontal directions, and supported so as to be capable of advancing and retreating with respect to an inclined ground, and an inclined ground on the pedestal. On the other hand, it comprises a drilling machine installed so as to be able to move forward and backward, and a drive means for feeding the drilling machine into operation.

Further, the anchor drilling device for a sloped ground according to the present invention is a boom capable of restraining a mobile crane and extending and contracting, and supported by the boom so as to be swingable in the vertical and horizontal directions and with respect to the sloped ground. A pedestal that is supported so that it can move forward and backward, and a hole drilling machine that is installed on this pedestal so that it can move forward and backward with respect to the slope
It is composed of a driving means for feeding the drilling machine.

[Operation of the invention]

In the anchor drilling device of the present invention, the crane boom is leaned against the inclined ground to be drilled at a desired tilt angle, and the boom in the stationary state is used to move the lifting body up and down by the winch or to move the boom. By stretching,
The drilling machine including the frame is indexed to the drilling position on the sloping ground.
Therefore, a scaffolding for drilling is not required, which enables efficient drilling work and labor saving.

Example of Invention

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

Fig. 1 shows the overall construction of a hole drilling device for forming anchor holes on a steep slope, 11 is a crawler crane used for drilling a steep slope, and 12 is a swivel part 11a. The boom 12 is attached so that it can be restrained, and one end of an ascending / descending rope 13 is connected to the tip of the boom 12, and the other end is a winch (not shown) installed in the turning part 11a via a guide pulley 14. No)) is connected. A support portion 15 is attached to the tip of the crane boom 12, and the support portion 15
The boom 12 is leaned against the slope of the sloping ground 4 at an arbitrary inclination angle via the.

Reference numeral 16 is a guide rail made of I-shaped steel or the like, which is attached to one side surface of the boom 12 over almost the entire length thereof via a guide plate 17, and a guide shoe 18 is attached to the guide rail 16 as shown in FIG. The first elevating body 19 is movably engaged along the longitudinal direction of the guide rail 16 via the elevating body 19
One end of a lifting rope 20 is connected to the crane, and the other end side is connected to the swing part 11 of the crane via a pulley 21 provided at the upper end of the boom 12.
It is connected to a winch (not shown) installed in a. Further, a support base 23 is mounted on the lifting body 19 by a universal bearing 22.
Is attached so that it can swing vertically and horizontally,
A long pedestal 24 is attached to the support base 23 in the front-back direction (inclined ground 4
It is installed so that it can move in the direction toward and away from the
Is moved back and forth by a hydraulic jack 25 installed on a support base 23.

The pedestal 24 has a guide portion 26 arranged on the upper surface thereof over the entire length.
A drilling machine 27 is movably installed in the guide section 26. The drilling machine 27 is moved forward along the guide section 26 by a feeding motor 28 installed at the rear end of the mount 24, It is set back. In addition, the drilling rod 27 of the drilling machine 27
a has the length necessary for forming the ground fastening anchor,
The free end side (ground 4 side) is penetratingly supported by the tip portion of the guide portion 26, and a guide pipe 29 is concentrically provided in the penetrating portion as shown in FIG. Is fitted to the outer periphery of the mouth pipe 30 embedded at the intersection of the concrete frame 1 laid on the slope of the sloping ground 4, and the drilling position is positioned by fitting the guide pipe 29 into the mouth pipe 30. It is supposed to do.

The pedestal 24 is provided with a horn portion 31 at its tip, and the horn portion 31 is for stabilizing the posture of the pedestal 24 with respect to the sloping ground 4, and is orthogonal to the pedestal 24 as shown in FIG. Support frame 32 installed horizontally with the fluid pressure cylinders 33, 3 installed symmetrically around the pedestal 24 at both ends of the support frame 32.
4 and the tip ends of the piston rods 33a, 34a of both fluid pressure cylinders 33, 34 are brought into contact with the ground 4 (or the concrete frame 1) to prevent the pedestal 24 from swinging in the left-right direction and guide pipes. It is designed to absorb the dynamic load acting on 29.

A support arm for adjusting the inclination of the gantry 24 is provided at the rear end of the gantry 24.
One end of 35 is rotatably connected, and the other end of the support arm 35 is rotatably connected to a second elevating body 36 slidably attached to the guide rail 16. One end of a pedestal tilt adjustment rope 37 is connected to the lifting body 36.
The other end side of the bobbin 12 is connected to a winch (not shown) in the crane revolving unit 11a via a pulley 38 provided on the upper end of the boom 12, and the winch raises and lowers the elevating and lowering body 36 to dig a boring machine. A pedestal 24 including 27 is vertically tilted about the universal bearing 22.

Next, a boring operation to the ground by the boring device of the present embodiment configured as described above will be described.

At the time of drilling the inclined ground 4, the crawler crane 11 is moved to a desired position opposite to the drilling position, and the upper end support portion 15 of the boom 12 is brought into contact with the inclined ground 4 or the laying concrete frame 1 to make the boom. 12 is leaned on the sloping ground surface at an arbitrary inclination angle.

In this state, the winch is driven to wind or unwind the rope 20 to move the elevating / lowering body 19 up and down along the guide rails 16 to drill the entire pedestal 24 including the drilling machine 27. Move to the intersection position of. Further, the rope 37 is wound or unwound by a winch to elevate and lower the elevating body 36 along the guide rail 16, and the pedestal 24 is tilted in the up and down direction through the support arm 35 with the universal bearing 22 as a fulcrum. Align the tube 29 with the mouth tube 30 at the frame intersection.

When the indexing of the drilling position is completed, the jack 25 is operated to move the gantry 24 forward in the direction of the sloping ground 4 to guide the guide portion.
The guide tube 29 provided at the tip of 26 is fitted into the mouth tube 30, and the forward movement of the jack 25 is stopped when the guide tube 29 is completely fitted. Then, the fluid pressure cylinders 33, 34 are operated to press the tips of the piston rods 33a, 34a against the sloped soil 4 or the concrete frame 1 to stabilize the pedestal 24 against the sloped soil 4.

In this state, drive the drilling machine 27 and feed motor at the same time.
28 is driven to feed the boring machine 27 along the guide portion 26 toward the inclined ground 4 direction. As a result, the drilling rod 27a is provided on the sloped ground 4.
A hole for an anchor will be drilled by this.

When the drilling of a predetermined depth is completed, the feed motor 28 is reversely rotated to retract the drilling machine 27, the drilling rod is pulled out from the ground 4, and then the entire mount 24 is retracted by the jack 25. Then, for the next drilling, the entire pedestal 24 is raised or lowered to perform the position indexing operation to the frame intersection.

In this embodiment, the guide rail 16 is attached to the boom 12 of the crawler crane 11, and the boring machine mount 24 is guided to the guide rail 16 by a winch so that the hoisting machine base 24 can be moved up and down and tilted by another winch. Since it is adjustable, and the position can be indexed to the frame intersection of the drilling machine 27, the scaffolding that is required in the past is completely unnecessary, and the movement of the drilling machine to the drilling position can be done by the crawler. It can be done easily by moving the crane 11 and raising and lowering the gantry 24 by a winch without requiring any manpower, and there is no possibility that the work site will be complicated by scaffolding materials, etc., and the labor and time for drilling will be drastically reduced. It can be reduced.

Further, since the horn portion 31 for stabilizing its posture is provided at the tip of the pedestal 24, it is possible to prevent the pedestal 24 from swinging in the left-right direction at the time of drilling, and absorb the dynamic load acting on the guide tube 29. be able to. Furthermore, since the guide pipe 29 is fitted into the mouth pipe 30 embedded at the intersection of the frame 1, the drilling position at the drilling can be reliably ensured.

Of course, if the guide rail 16 and the pedestal 24 are removed from the boom 12, the crawler crane 11 can be used for usual load hoisting and the like.

Further, the horn section 31 may be omitted. Further, in the above embodiment, the case where the tilt adjustment of the gantry 24 is performed by the support arm 35 and the second elevating body 36 has been described. However, a fluid pressure cylinder or the like is attached to the first elevating body 19 to adjust the gantry inclination. May be possible.

Further, the drilling device of the present invention is not limited to the drilling of the frame construction method as shown in the above-mentioned embodiment, but can be applied to the rock anchor construction method, the concrete tension construction method and other slope stabilizing construction methods.

FIG. 4 shows a modified example of the device shown in FIG. 1, in which the support arm 35 is changed to a hydraulic cylinder 39, the elevating bodies 19 and 36 are connected by a position fixing 40, and the elevating rope 20 is used. Both lifts 19 and 36 can be moved.

Also in this modification, the same operational effects as those of the above-described embodiment can be obtained.

FIG. 5 shows another embodiment of the present invention, in which the boom 41 is structured so that it can be depressed and expanded and contracted, and a mount 42 is provided near the tip of the boom 41 vertically and horizontally with a universal bearing 43 as a center. It is designed to adjust the inclination in the direction. A drilling machine 44 is attached to the gantry 42 as in the above embodiment.

Also in this embodiment, it is possible to obtain the same effects as those of the above embodiment.

〔The invention's effect〕

As described above, according to the present invention, a scaffold is not required for drilling for the purpose of protecting slopes on steep slopes, and the human labor required for drilling is greatly reduced, which makes drilling safe. At the same time, the drilling work efficiency is improved, and the drilling cost can be reduced.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of an anchor drilling device according to the present invention, FIG. 2 is an enlarged sectional view taken along line II-II of FIG. 1, and FIG. FIG. 4 is an enlarged plan view of the horn portion, FIG. 4 is an overall configuration diagram showing a modified example of the device of FIG. 1, and FIG. 5 is an overall configuration diagram showing another embodiment of the present invention.
FIG. 6 is a front view of a steep slope by the frame method, FIG. 7 is a sectional view taken along the line VV, and FIG. 8 is a side view showing a conventional drilling method. 1 …… Concrete frame, 4 …… Sloping ground, 11 ……
Crawler crane, 12 ... Boom, 15 ... Support, 16 ...
… Guide rails, 19 …… first lift, 23 …… support base,
24 …… Stand, 25 …… Jack, 26 …… Guidance section, 27 …… Driller, 28 …… Feed motor, 29 …… Guide tube, 30 ……
Mouth tube, 31 …… Horn part, 33,34 …… Fluid pressure cylinder, 3
5 …… Support arm, 36 …… Second lifting body.

Claims (2)

[Claims] 1. A boom capable of restraining movement of a mobile crane, a guide rail attached to a side surface of the boom along a longitudinal direction thereof, and a first elevating body which is moved up and down on the guide rail by a winch of the mobile crane. , A platform that is swingably supported in the vertical and horizontal directions on the first elevating body and that is supported so as to be able to move forward and backward with respect to a sloped ground, and a shaving that is installed on the base so as to be forward and backward with respect to the sloped ground. A drilling device for an anchor on a sloping ground, which comprises a drilling machine and driving means for feeding the drilling machine. 2. A boom capable of restraining a mobile crane and extending and contracting, a pedestal supported by the boom so as to be swingable in vertical and horizontal directions, and supported so as to be capable of advancing and retreating with respect to a sloping ground, and this pedestal. An anchor drilling device for an inclined ground, comprising: a drilling machine installed on the sloped ground so as to be capable of advancing and retreating with respect to the ground; and driving means for feeding the drilling machine into operation.