JPH0624468Y2 - Drilling device for anchors on sloping ground - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an anchor drilling device for protecting a steep slope on a slope, and in particular, an anchor that does not require a scaffold for drilling on a slope. Relates to a drilling 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 a right angle 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 then quickly It prevents the collapse of slopes.

In addition, the frame construction method, as shown in FIG. 6 and FIG.
The concrete frames 1 are arranged in a grid pattern on the slope of a steep slope, and holes 5 almost perpendicular to the slope are made to a desired depth from a mouth pipe 3 provided at each intersection 2 thereof to the ground 4 by a boring machine not shown. After drilling, a tension material 6 is inserted into the hole 5 and cement milk 7 is injected to solidify the ground 4, and the concrete frame 1 is tightened and fixed to the slope by using this as an anchor 8 to protect the slope. It is something to do.

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, the hole drilling machine 10 is installed on the scaffold 9, and the grid-shaped concrete frame 1
A hole for an anchor is formed in the ground 4 facing the intersection point.

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 movement of the hole drilling machine 10 on the scaffold 9 and A lot of manpower is required for the drilling work, and the drilling cost becomes high.

[Problems to be solved by the device]

Therefore, there is a demand for a drilling device that does not have a scaffold and is easy to move.

As such a hole drilling device, for example, a hole drilling device for anchors of sloping ground shown in FIG. 9 is known.

This anchor hole drilling device 11 for an inclined ground is a boring machine 13 of a mobile crane 12 in which a slide base 15 is suspended by a wire 14 and a drilling device is installed on the slide base 15 so as to be capable of advancing and retracting with respect to an inclined ground. Since the drilling machine 16 is arranged, it does not take time to set the drilling machine 16 at a predetermined position, and the drilling efficiency can be improved. However, since the suspended slide base 15 sways, a laterally projecting angular support 17 is attached to the tip of the slide base 15 at the portion in contact with the slope of the slope, but the slide base 15 still has Stability remains a problem, and it is difficult to give a large thrust to the drilled rod 18.

The present invention has been made to solve the above-mentioned problems, and the purpose thereof is to eliminate the need for a scaffold, and to enable high efficiency, labor saving and cost reduction of drilling work on a steeply sloped ground. Another object of the present invention is to provide an anchor drilling device for an inclined ground that can stabilize the holding state of the slide base and can apply a large thrust to the drilling rod.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a boom capable of restraining a mobile crane, a standing support column that can be hung on the tip of the boom and lean against an inclined ground, and a longitudinal direction on the side surface of the boom. With the guide rail attached along
An elevating body for holding the slide base that is moved up and down by a winch of a mobile crane on the guide rail, a slide base that is fixedly and releasably fixed to the elevating body for holding the slide base, and a slanted ground on the slide base. A drilling machine installed so that it can move forward and backward, and a slide base moving up and down which is rotatably connected to the base end of the slide base and is lifted up and down by a slide base end up and down winch provided on the standing support pillar. It is equipped with a body.

[Action]

In the present invention, the standing support pillar is leaned against the sloping ground,
The slide base folded into the standing support columns is raised from the slide base moving lifting body, and is held in a state substantially perpendicular to the standing support columns.

Then, the winch for lifting the slide base end is operated to move the slide base moving lift body to move the slide base to a predetermined position, and the slide base holding lift body is moved to the slide base on the guide rail. Let me bring it. When the slide base is fixed to the slide base holding lifting body of the guide rail at a predetermined angle, the drilling machine is adjusted to a predetermined drilling position and angle.

〔Example〕

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

FIG. 1 shows the overall construction of a drilling device for forming anchor holes on a steep slope, 21 is a crawler crane used for drilling a steep slope, and 22 is a swivel part 21 thereof.
It is a boom that can be attached to a.
One end of the wire 23 is connected to the tip of the wire 2.
The other end of 3 is connected to a winch (not shown) installed on the swivel part 21a.

Reference numeral 24 is a standing support column, which is hung from a hook 26a of a movable pulley 26 attached to the tip of the boom 22 via a wire 25 so as to lean against the slope of the sloping ground E.

A support portion 27 and a pulley 28 are provided at the upper end of the standing support column 24.
, A supporting leg 29 is pivotally supported at the lower end, and a winch 30 for raising and lowering the slide base end and a pulley 31 are installed. An elevating body 32 for moving a slide base is slidably provided on the standing support column 24 along the longitudinal direction thereof.
Is moved up and down by the wire 33 unwound from the winch 30 for raising and lowering the slide base end.

In addition, a ladder (not shown) is attached to the side surface of the standing support column 24 so that an operator can move up and down, and if necessary, up to the drilling hole at the intersection of the concrete frame 1 shown in FIG. You can work closer to you.

Reference numeral 34 is a guide rail made of I-shaped steel, which is attached to one side surface of the boom 22 along the longitudinal direction thereof. As shown in FIG. 2, a slide base holding lifting / lowering body 35 having an electromagnetic magnet 35a is engaged with the guide rail 34, and the guide wheels 35b and 35b guide the guide rail 34 along the longitudinal direction of the guide rail 34. Can be moved. One end of a wire 36 is connected to the slide base holding elevating / lowering body 35, and the other end is connected to a winch (not shown) installed in the turning portion 21a of the crawler crane 21 via a pulley 37 provided on the upper portion of the boom 22. ) Is linked to. The winch raises and lowers the slide base holding elevator 35 on the guide rail 34.

Reference numeral 38 denotes a slide base having a predetermined length, which has a structural member 38a having a square cross section and a plate member 38b fixed to the structural member 38a, the base end of which is the hinge portion 32a of the slide base moving lift 32. Is supported by.

The slide base 38 is movably provided with a guide portion 39 having guide wheels 39a, 39a that engage with the plate material 38b, and a drilling machine 40 is fixed to the guide portion 39.
The drilling machine 40 is configured to move forward and backward on the slide base 38 by a drilling machine moving motor 41 provided at the tip of the slide base 38. Also, the boring machine 40
The boring rod 40a has a length necessary for forming the ground fastening anchor, and the boring bit 40b is attached to the tip of the boring rod 40a.

Further, one end of a slide base wire 41 is connected in the middle of the slide base 38, and the other end thereof is provided on the revolving portion 21 a of the crawler crane 21 via a slide base lifting pulley 42 provided at the tip of the boom 22. It is connected to a winch (not shown).

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

As shown in FIG. 4, when drilling the sloped ground E,
The crawler crane 21 is moved to a desired position facing the drilling position.

In this state, the boom 22 is tilted at an angle that is almost vertical, and the hook 26a at the tip of the boom 22 is inclined.
A standing support column 24 is suspended on the. On the other hand, the slide base 38 is hung on the hinge portion 32a of the slide base moving up-and-down body 32 and stored in a vertical state.

In order to shift the storage state of FIG. 4 to the drilling start state of FIG. 1, first, the wire 23 is loosened and the boom 22 is held parallel to the sloped ground E. Then, the wire 25 is installed on the horizontal ground E ₁ near the rising portion of the sloping ground E of the support leg 29 of the standing support column 24 that is hung and extended. The standing support columns 24 are rotated around the supporting legs 29, and the supporting portions 27 are brought into contact with the sloped ground E, whereby the standing support columns 24 are leaned against the sloped ground E. At this time, the boom 22 and the leaning support pillars 24 leaning against each other are parallel to each other. Then, the slide base 38 in the state of being folded on the standing support column 24 is raised from the slide base moving up-and-down body 32, and the winch is driven to pull upward with the wire 41 for the slide base, whereby the sliding support column 34 is substantially moved. Make a right angle.

Then, the winch 30 for raising and lowering the slide base end is operated, and the raising and lowering body 32 for moving the slide base is set on the supporting column 24.
Slide base 38 by moving up and down along
Concrete frame 1 for drilling shown in Fig. 6
Move to the intersection position of. Next, the slide base holding lift 35 is moved along the guide rails 34, and as shown in FIG. 2, the slide base 38 is moved by an electromagnetic force at a predetermined angle to an electromagnetic magnet 35a of the slide base holding lift 35. When it is held and adhered to, the boring machine 40 is adjusted to a predetermined boring position and angle with respect to the inclined ground E.

When the indexing of the drilling position is completed, the drilling machine 40 is driven and simultaneously the drilling machine moving motor 41 is driven to move the guide base 39 on the slide base 38, and the guide base 39 is fixed to the guide portion 39. The boring machine 40 is fed in the direction of the sloped ground E. As a result, holes for anchors are formed in the sloped ground E by the drilling rod 40a. Slide base 3
When an excessive force is applied to the slide base 38, the slide base 38 is moved by the electromagnetic magnet 35a due to the influence of the force as shown in FIG.
The sliding base 38 and the boom 22 are prevented from being damaged.

When the drilling of the predetermined depth is completed, the drilling machine 40 is retracted together with the guide portion 39, and the drilling rod 40a is moved to the inclined ground E.
Pull out from. Then, for the next drilling, the entire slide base 38 is raised or lowered to perform the position indexing operation to the next intersection of the concrete frames 1.

According to the above configuration, the slide base moving up-and-down body 32 is moved with respect to many intersection positions of the concrete frame 1 to be drilled, and the slide base 38 is held at the slide rail 38 at a predetermined angle. By fixing the drilling machine 40 including the slide base 38 to a predetermined number of positions by being fixed to the elevator body 35, the drilling machine 40 can be easily adjusted to a predetermined number of drilling positions and angles. You can

As a result, it is possible to eliminate the need for a scaffold and make it possible to increase the efficiency of drilling work on a steeply sloped ground E, save labor, and reduce costs.

Further, since the slide base 38 is held by the slide base moving elevating body 32 of the standing support pillar 24 and the slide base holding elevating body 35 of the guide rail 34, the slide base 38 is firmly held and is used during drilling. Less runout,
Drilling work can be performed easily and steep ground can be drilled with a large thrust.

This thrust is obtained from the following equation from FIG.

Here R: Pressing force of thruster (thrust) W ₁ : Weight of standing support pillar W ₂ : Weight of drilling machine + slide base weight L ₁ : Distance to center of gravity of standing support pillar L ₂ : Support of slide base part distance to L _3: the distance to the sliding base centroid L _4: the length of the slide base theta _1: slide base Tilt angle theta _2: angle theta ₃ with respect to the slide base _horizontal: shows the wire angle of the slide base pulling .

For example, W ₁ = 2000 kg, W ₂ = 700 kg, θ ₁ = 6
If 0 °, θ ₂ = 30 °, L ₁ = 10 m and L ₂ = 15 m are set, R = 1000 kg or more can be obtained.

[Effect of device]

As described above, according to the anchor drilling device for a sloped ground according to the present invention, the slide base moving lifting body is moved with respect to many intersection points of the concrete frame to be drilled, and the slide base is predetermined. By fixing it to the slide base holding up-and-down body of the guide rail at an angle of, the hole drilling machine including the slide base can be moved to many predetermined positions, and the drilling machine can be easily moved to many predetermined drilling positions, The angle can be adjusted.

As a result, it is possible to eliminate the need for a scaffold, and to achieve high efficiency, labor saving, and cost reduction of drilling work on a steeply sloped ground.

Further, since the slide base is supported by the slide base moving elevating body of the standing support pillar and the slide base holding elevating body of the guide rail, the holding is strong,
The runout at the time of drilling is reduced, the drilling work can be performed easily, and the steep slope ground can be drilled with a large thrust of the drilling machine.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an anchor drilling device for an inclined ground according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a fixed state of the slide base holding lift and the guide rail of FIG. FIG. 3 is a cross-sectional view showing a state where the slide base holding lift and the guide rail in FIG. 1 are released. FIG. 4 is an external view for explaining the appearance of the device in the stored state. FIG. 5 is an explanatory diagram of the calculated value of the thrust of the drilled rod. FIG. 6 is a front view of a steep slope by the frame method. FIG. 7 is a sectional view taken along the line AA of FIG. FIG. 8 is a side view showing a conventional drilling method. FIG. 9 is an overall configuration diagram of a conventional anchor drilling device for an inclined ground. [Explanation of symbols of main parts] 21 ... Crawler crane 22 ... Boom 24 ... Standing support column 32 ... Slide base moving lift 34 ... Guide rail 35 ... Slide base holding lift 38 ... … Slide base 40 …… Drilling machine E …… Sloping ground.

Claims (1)

[Scope of utility model registration request] 1. A boom that can be depressed by a mobile crane, a standing support column that can be hung on the tip of the boom and lean against an inclined ground, and a guide rail that is attached to the side surface of the boom along its longitudinal direction. And a slide base holding lifting body that is lifted and lowered by a winch of a mobile crane on the guide rails, a slide base that can be fixedly attached to and released from the slide base holding lifting body, and an inclined ground on the slide base. To move the slide base, which is connected to the base end of the slide base so as to be able to move forward and backward, and which is vertically moved by the winch for raising and lowering the slide base end on the standing support pillar. A drilling device for an anchor on a sloping ground, characterized by comprising: