JP2003027874A - Method for removing underground embedded portion of utility pole, and removing machine for use therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for efficiently and safely removing an underground embedded portion of a utility pole at any place, and to provide a removing machine for use in the method. SOLUTION: The removing machine for removing the underground embedded portion of the utility pole comprises an auger drill 10 having a hollow portion in which the utility pole 30 is insertable, a clamp device 20 for clamping the underground embedded portion of the utility pole 30, and a support device 4 for vertically movably supporting the auger drill 10 and the clamp device 20. Then, by using the removing machine, the ground on the periphery of the underground embedded portion of the utility pole 30 is excavated, and the underground embedded portion of the utility pole 30 is clamped, drawn up, and removed by the clamp device 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing an underground buried portion of a utility pole and a removal machine for removing an underground buried portion remaining after removing a ground portion of a utility pole erected in an urban area or the like. is there.

[0002]

2. Description of the Related Art Electric poles erected in urban areas or the like need to be removed for renewal when their useful life has passed. Moreover, in recent years, it has often been necessary to remove the electric wires when they are buried underground due to the beauty of the streets and problems during urban redevelopment. Conventionally, in order to remove such a utility pole, the utility pole is supported by a crane and the outer ground of the utility pole is excavated by a hydraulic excavator, a breaker, etc., or manually to expose the underground buried portion of the utility pole, and then the crane is removed. The utility pole is pulled out from the ground.
If it cannot be pulled out, the utility pole may be destroyed from the root and removed.

A method of supporting the upper part of a utility pole by using a special utility pole removing machine and cutting and removing it near the surface of the utility pole has also been proposed (see JP-A-6-58020).

[0004]

In order to completely pull out a utility pole using a machine, many machines such as a crane supporting the utility pole, a hydraulic excavator for excavating the outer ground of the utility pole, and a truck for carrying out are to be provided. However, since the work area must be large and the work area must be large, the work sites where such a removal method can be used are limited. Further, since hydraulic excavators and the like are general-purpose machines, the excavation range is unnecessarily wide and efficiency is poor.

When many machines cannot be brought in on a narrow road or the like, it is necessary to excavate manually, but excavation work by human is extremely difficult, inefficient, and dangerous. When a utility pole is destroyed from the root and removed, or when a utility pole removing machine is used to cut near the surface of the utility pole to remove it, only the above-ground portion of the utility pole is removed and the underground buried portion remains. Therefore,
Unless it is safe to leave the underground buried part as it is, after removing the ground part, the outer ground of the utility pole must be excavated again and the underground buried part must be removed.

However, even when only the underground burial portion is removed, if a hydraulic excavator or the like is used for excavation, the excavation range is unnecessarily widened and efficiency is low because it is a general-purpose machine, and excavation work by manpower is extremely difficult. It is still inefficient. INDUSTRIAL APPLICABILITY The present invention solves the above-mentioned problem in the removal work of the electric pole, and the removal work of the underground buried portion of the utility pole can be efficiently and safely performed anywhere, and the cost of the removal work can be reduced. It is an object of the present invention to provide a method for removing a buried part of a telephone pole and a removing machine.

[0007]

In the method for removing an underground buried portion of a utility pole according to the present invention, the outer ground of the underground buried portion of the utility pole is excavated with an auger drill having a hollow portion into which the utility pole can be inserted, and the utility pole is clamped. The above problem is solved by clamping and pulling up and removing the underground buried part.

The method of removing the underground buried portion of the electric pole includes an auger drill having a hollow portion into which the electric pole can be inserted, a clamp device for clamping the underground buried portion of the electric pole, and an auger drill and a clamp device which can be lifted and lowered. And a supporting device for removing the underground buried portion of the utility pole. With this removal machine, the outer ground of the underground burial part of the utility pole can be excavated in an annular shape along the utility pole with an auger drill, so there is no need to excavate the outer ground over an unnecessarily large area, and efficient and safe After excavation, the underground buried portion of the utility pole can be clamped by the clamp device, and the auger drill and the clamp device can be lifted by the support device to easily pull up and remove the underground buried portion of the utility pole.

The removal machine uses a truck as a truck,
If it is configured to be equipped with a support device that supports the auger drill and the clamp device so that it can be moved up and down, and a crane for mounting the vehicle, it is possible to load and transport the underground burial part of the removed utility pole with one unit. It can be carried out.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view of a machine for removing an underground buried portion of an electric pole, which is an embodiment of the present invention, FIG. 2 is a plan view of a machine for removing an underground buried portion of an electric pole, and FIGS. 7 is an explanatory view of the work for removing the underground buried portion of the electric pole. This telephone pole removing machine uses truck 1 as a trolley, and truck 1's loading platform 3
A vehicle-mounted crane 2 is mounted in front of the vehicle. A support device 4 that supports the auger drill 10 and the clamp device 20 is mounted on the rear end of the luggage carrier 3, and an outrigger 5 is provided below the support device 4.

The support device 4 includes a dump frame 6, a sideward device 7, a slide cylinder 8, and a slide frame 9.
It has and. The dump frame 6 is pivotally supported at the rear end of the loading platform 3 and can be tilted back and forth by a dump cylinder 61. The sideways device 7 includes a pair of parallel links 71, 7 connecting the dump frame 6 and the slide cylinder 8.
2 and a horizontal ejection cylinder 73 provided between the dump frame 6 and the link 71. The slide cylinder 8 is held in parallel with the dump frame 6 and moved laterally.

The slide cylinder 8 is a cylinder body 8
1, the slide frame 9 is slidably supported, and the rod 8
The slide frame 9 is slid in the longitudinal direction of the slide cylinder 8 by the expansion and contraction of 2. On the slide frame 9,
A slide bracket 14 that supports the base end portion of the auger drill 10 and the clamp device 20 is provided by a known feeding mechanism (not shown) so as to be able to move forward and backward, and a centralizer for holding the auger drill 10 at the center position. A riser 15 is provided.

The auger drill 10 is a cylindrical body having a hollow portion through which a utility pole 30 can be inserted. A screw 11 for discharging excavated soil and the like is provided on the outer periphery of the auger drill 10, and an excavating bit 12 is provided at the tip of the auger drill 10. A rotating device 13 including a motor 16, a gear 17, a slewing bearing 18, and the like is provided in the section. The clamp device 20 includes clamp jaws 23 and 24 that are opened and closed by a pair of left and right clamp cylinders 21 and 22, and can clamp an electric pole that has passed through the hollow portion of the auger drill 10.

When the underground buried portion of the utility pole is to be removed, the truck 1 is run in the state shown in FIG. 1, parked near the remaining utility pole 30, and then the outrigger is moved as shown in FIGS. 3 and 4. Overhang 5 to stabilize the car body. Next, the dump cylinder 61 is extended to make the dump frame 6 upright, and the sideward cylinder 73 of the sideways device 7 is expanded / contracted to move the slide cylinder 8 in parallel laterally.
Is extended to move the slide frame 9 downward to position the auger drill 10 right above the utility pole 30.

After the positioning is completed, as shown in FIG.
The slide cylinder 8 is further extended to abut the end of the slide frame 9 on the ground surface. At this time, the upper end of the electric pole 30 is inserted into the hollow portion of the auger drill 10.
Then, the rotating device 13 is used to drive the auger drill 10 to rotate, and the slide bracket 14 is fed downward to excavate the outer ground of the utility pole 30.

By excavating a predetermined length, as shown in FIG.
When the upper end of the power pole 30 passes through the hollow portion of the auger drill 10 and reaches a position where it can be clamped by the clamp device 20, the excavation is stopped, the clamp cylinders 21 and 22 are extended to clamp the power pole 30, and then the slide bracket 1
4 is fed upward, and as shown in FIG. 7, the utility pole 30 is pulled up to the ground together with the auger drill 10.

After that, the slide cylinder 8, the side-out device 7, and the dump frame 6 are returned to their original positions, and the outrigger 5 is moved.
Is stored, the truck 1 is run, and the truck 1 is transported to a predetermined accumulation place. In addition, in the case of continuously removing the underground buried portion of the utility pole at a plurality of places, after pulling up the utility pole 30, the clamp device 20 is opened while the auger drill 10 is inclined, and the utility pole 30 is removed. Pull out from within,
The crane 2 loads the cargo bed 3. It is also possible to perform only the excavation of the outer ground of the power pole 30 with the auger drill 10 and to lift the power pole 30 with the crane 2, or to load the power pole 30 on the bed of another truck.

Since the machine for removing the underground buried portion of the electric pole can excavate the outer ground of the underground buried portion of the electric pole 30 in a ring shape along the electric pole 30 with the auger drill 10, the outer ground is excavated over a wider range than necessary. Excavation can be performed efficiently without the need. After the excavation, the underground buried portion of the electric pole 30 is clamped by the clamp device 20 and the auger drill 10 and the clamp device 20 are raised by the slide bracket 14, so that the underground buried portion of the electric pole 30 can be easily pulled up and removed. . Since all the steps of the removal work can be performed by one removal machine, it is not necessary to have a large work area, it is possible to save space, and it is possible to carry out the work safely at any work site.

[0019]

As described above, according to the present invention,
It is possible to efficiently and safely perform the work of removing the underground buried portion of the electric pole, and to reduce the cost of the work for removal. In addition, the removal machine uses a truck as a trolley, and if it is configured to be equipped with a support device that supports the auger drill and the clamp device so as to be able to move up and down, and a crane for mounting the vehicle, Loading and transportation of the underground burial section can be done by one unit.

[Brief description of drawings]

FIG. 1 is a side view of a machine for removing an underground buried portion of a utility pole, which is an embodiment of the present invention.

FIG. 2 is a plan view of a removal machine for an underground buried portion of a telephone pole.

FIG. 3 is an explanatory diagram of a work for removing an underground buried portion of a telephone pole.

FIG. 4 is an explanatory diagram of a work of removing an underground buried portion of a telephone pole.

FIG. 5 is an explanatory diagram of a work for removing an underground buried portion of a telephone pole.

FIG. 6 is an explanatory diagram of a work for removing an underground buried portion of a telephone pole.

FIG. 7 is an explanatory diagram of a work for removing an underground buried portion of a telephone pole.

[Explanation of symbols]

1 track 2 cranes 3 loading platform 4 Support device 5 Outrigger 6 dump frames 7 Horizontal device 8 slide cylinder 9 slide frames 10 auger drill 13 Rotating device 14 Slide bracket 20 Clamp device 30 utility poles

Claims (3)

[Claims] 1. An underground burial part of a utility pole to be pulled up and removed by excavating an outer ground of an underground burial part of a utility pole with an auger drill having a hollow portion into which the utility pole can be inserted, and clamping and pulling up and removing the underground burial part of the utility pole with a clamp device. Removal method. 2. An underground power pole including an auger drill having a hollow portion through which the power pole can be inserted, a clamp device that clamps an underground buried portion of the power pole, and a support device that supports the auger drill and the clamp device so as to be able to move up and down. Machine for removing buried parts. 3. A machine for removing an underground buried portion of a utility pole according to claim 2, wherein a support device for supporting the auger drill and the clamp device so as to be able to move up and down, and a vehicle-mounted crane are mounted on the truck.