JP3129537B2 - Vertical hole drilling rig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for excavating a vertical hole in the ground.

[0002]

2. Description of the Related Art Conventionally, when excavating a vertical hole such as a transmission line foundation hole into the ground, a small excavator-based excavator is inserted into the vertical hole to excavate the earth and sand at the bottom of the hole. When it becomes smaller, the body of the excavator occupies a large space in the vertical hole, and it becomes difficult to perform excavation work with a shovel. In some cases, an excavator provided with a clamshell excavates from the ground, but in this case, the excavation depth is limited.

Therefore, a plurality of vertical guide rails are removably fixed to the inner side surface of the earth retaining cylinder frame, and the ends of the support beams are vertically and removably fitted to the guide rails, and are freely detachable. And the center axis is pivotally attached to the center of the support beam so as to coincide with the axis of the cylinder frame, and the vertical frame supported at the bottom of the hole is vertically displaced from the center of the cylinder frame via the connecting member to the center axis. A moving device that is connected so as to be movable and fixed and stops the vertical frame from moving along the inner periphery of the cylindrical frame around the central axis, and a peripheral edge of the cylindrical frame facing the lower end of the vertical frame beyond the center of the cylindrical frame. An excavator for excavating a vertical hole in the ground surface with a power shovel extended in the vicinity has been proposed (see Japanese Patent Publication No. 1-33638).

[0004]

However, in this excavation device for a vertical hole in the ground surface, since equipment such as a support beam is provided at the center of the cross section of the vertical hole, when the diameter of the vertical hole becomes small, the excavated earth and sand is carried out. It hinders the lifting of the carrier bag, and is inefficient. If vacuum transport is used to carry out the earth and sand, large blocks of rock cannot be transported, and the work of collecting and sucking earth and sand into the suction port is troublesome. In addition, there is a problem in that the structure is complicated, and it takes time and effort to lower and position the device as the excavation progresses.

The present invention solves the above-mentioned problems in a vertical hole excavator. Even if the structure is compact and the diameter of the vertical hole is small, the operation of excavating the bottom of the hole, carrying out the earth and sand, and setting the descending position of the device is performed. It is an object of the present invention to provide a vertical hole excavator capable of efficiently performing drilling.

[0006]

In the vertical hole excavator of the present invention, an anchor pin is attached to a lower end, and can be moved vertically along a retaining liner .
A guide frame that is additionally extended as the vehicle advances and is supported by a ground support frame; a slide frame slidably mounted on the guide frame so as to be vertically slidable; and the slide frame is fixed to the guide frame. The above object is achieved by providing a lock device, an outrigger for securing stability, which is pivotally attached to the slide frame, and a shovel device rotatably supported by the slide frame.

[0007]

When installing the excavator of this vertical hole in the vertical hole, firstly, a guide frame is erected along the retaining liner, and a slide frame provided with the outrigger and the shovel device is attached to the guide frame. After sliding down to the bottom, fix it with the lock device. At the time of excavation, first, the outrigger is fixed to the ground at the bottom of the overhang hole to secure the stability of the device, and then the lower portion of the guide frame is excavated to a predetermined depth by a shovel device.
Next, the outrigger is reduced to lower the guide frame together with the slide frame, and the anchor pin at the lower end is fixed to the excavated ground. Then, the remaining portion of the bottom of the hole is sequentially excavated with a shovel device, and the excavated earth and sand is loaded into a carrier bag, lifted by a crane and carried out to the ground. Since there is no equipment such as a beam in the center of the cross section of the vertical hole, even if the diameter of the vertical hole becomes small, the excavated earth and sand can be carried out without hindrance. Finally, the portion remaining under the outrigger is excavated, and the outrigger is extended to land.

[0008] An earth retaining liner is installed on the lower peripheral wall of the excavated vertical hole, and the above excavation work is performed again. The guide frame is added and extended at the upper end as the excavation progresses.

[0009]

FIG. 1 is a perspective view showing an entire configuration of a vertical hole excavator according to an embodiment of the present invention, and FIG. 2 is an explanatory view showing a state in which a slide frame is mounted. This vertical hole drilling rig
A slide frame 2 is attached to a guide frame 1 so as to be slidable up and down. An outrigger 3 is pivotally attached to a lower end of the slide frame 2, and a shovel device 5 is supported at an intermediate portion of the slide frame 2 via a turning device 4. An operation lever 6, a driver's seat 7, a hydraulic pack 8 are provided on an upper portion of the slide frame 2, and a head guard 9 is provided on an upper end.

The guide frame 1 is a steel material having an H-shaped cross section.
As shown in FIG. 2, the bracket 11 is fixed to the earth retaining liner 10 of the vertical hole 20 with bolts 12 and is held movably in the vertical direction along the earth retaining liner 10. At the lower end of the guide frame 1, a breaker 13 is fixed, and an anchor pin 14 is mounted on the breaker 13. Therefore, when excavating, the breaker 13 is driven to strike the anchor pin 14 on the ground at the hole bottom 21. As a result, the lower end of the guide frame 1 can be easily fixed. A steel material of a predetermined length is successively added to the upper end of the guide frame 1 as the excavation progresses, and is supported by a support frame (not shown) installed on the ground surface.

The slide frame 2 is provided with a lock device 15 having a hydraulic cylinder, and can be fixed to the guide frame 1 at an arbitrary position. The outrigger 3 can be rotated left and right by a rotation cylinder 16. The excavator device 5 is provided with a bucket 19 at the tip of an up-and-down boom 17 and an arm 18.
The whole ground can be excavated. When the ground is hard, the bucket 19 is excavated by replacing the bucket 19 with a breaker as necessary. The slide frame 2 is divided into a part for mounting the outrigger 3 and the turning device 4 and a part for mounting the operation lever 6, the driver's seat 7, the hydraulic pack 8, and the head guard 9, so that the slide frame 2 can be connected in a vertical hole at the site. This facilitates transportation when used in mountainous areas.

At the time of excavation work, the slide frame 2 is slid down along the guide frame 1 to near the hole bottom 21 and then fixed to the guide frame 1 by the lock device 15. Therefore, after securing the outrigger 3 which is rotated left and right by extending the rotation cylinder 16 to the ground at the overhanging hole bottom 21 to ensure the stability of the device,
First, the ground below the guide frame 1 is excavated by the shovel device 5 to a predetermined depth. Next, the outrigger 3 is contracted to lower the guide frame 1 together with the slide frame 2, and the breaker 1
3 is driven to drive and fix the anchor pin 14 at the lower end to the ground after excavation. Then, the excavator device 5 is used to drill the hole bottom 21.
The excavation is excavated sequentially, and the excavated earth and sand is loaded into a carrier bag, lifted by a crane and carried out to the ground. At this time,
Since there is no equipment such as a beam in the center of the cross section of the vertical hole, even if the diameter of the vertical hole becomes small, the excavated earth and sand can be carried out without hindrance. Finally, the rotating cylinder 16
To move the outrigger 3 to excavate the portion remaining under the outrigger 3. When the excavation is completed, the earth retaining liner 10 is installed on the excavated lower peripheral wall of the vertical hole, and the above excavation work is performed again. The guide frame is added and extended at the upper end as the excavation progresses.

[0013]

As described above, the vertical hole excavator of the present invention has a compact structure and does not occupy a large space. Therefore, even if the diameter of the vertical hole is small, it is difficult to excavate the bottom of the hole and carry out the earth and sand. Can be done without. Further, the operation of setting the lowering position of the apparatus can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire configuration of a vertical hole excavator according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an attached state of a slide frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide frame 2 Slide frame 3 Outrigger 4 Swivel device 5 Excavator device 10 Liner for earth retaining 14 Anchor pin 15 Lock device 20 Vertical hole 21 Hole bottom

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E21D 1/03-1/06

Claims (1)

(57) [Claims] 1. An anchor pin is attached to a lower end, and can be moved vertically along a retaining liner .
The upper end is additionally extended as the excavation progresses, and
A guide frame supported by the guide frame, a slide frame slidably mounted on the guide frame so as to be vertically slidable, a lock device for fixing the slide frame to the guide frame, and pivotally mounted on the slide frame so as to be able to turn left and right. stability and outriggers for securing, vertical hole drilling device comprising a shovel device which is pivotally supported on the slide frame.