JP2586459Y2 - Drilling equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digging apparatus for constructing columns for overhead wiring such as power lines and telephone lines.

[0002]

2. Description of the Related Art Conventionally, drilling work at the time of building pillars has been performed manually or mechanically. Since drilling by human power is severe and dangerous, it has been gradually shifting to mechanical power in recent years. However, conventional drilling machines, as shown in FIG.
After digging a suitable shallow hole at the position of the pillar, the tip of the earth auger S lifted by the boom B of the digging pole car A,
After being inserted into the hole so that the excavation position does not shift, the earth auger S is gradually lowered and excavated while rotating, and when reaching a predetermined depth, the boom B is pulled up and the earth auger S is pulled out. I was digging a hole.

[0003] However, the above-mentioned conventional machine method requires not only skill in operating the machine, but also makes it impossible to perform such heavy machine work when the road width at the construction site is narrow or the ground is soft. , And a digger A
There was a problem that the maintenance cost of the vehicle was expensive.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. The purpose of the present invention is to make the device simple, easy to carry and operate, and to be used anywhere. An object of the present invention is to provide a digging device capable of performing a digging operation safely and quickly.

[0005]

[Means for Solving the Problems] The digging device of the present invention is:
Drilling consisting of a driving pipe having a length slightly longer than the depth of the hole to be drilled and having a sharp lower end, and a drilling drum mounted via a radiating plate below the driving pipe. The apparatus is characterized in that a driving rod is slidably inserted into the driving pipe from above, and a knocking head, which is a weight, is provided above the driving rod. The drilling drum is
It is also characterized in that it is configured in a tapered shape extending downward. Further, a small driving device such as a breaker is mounted on the driving tube or the driving rod.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a driving pipe body, for example, having a length of about 1700 mm and a thickness of 50 mm.
It consists of a metal pipe of about φ. The lower end 1a of the driving tube 1 is tapered and sharpened so that it can easily penetrate into the ground. The upper end 1b of the driving tube 1 is open.

[0007] A drilling drum 3 is integrally attached to a lower portion of the driving tube 1 via a radiation plate 2. The number of the radiating plates 2 is not limited to four, and may be any number of two or more. The lower portion 2a of the radiating plate 2 is exposed below the excavating drum 3, and its outer edge is formed so as to be inclined so as to be narrowed downward.

The above-mentioned excavating drum 3 plays a main role of a digging function, and its outer diameter is the inner diameter of a hole to be dug, for example, about 250 mmφ, about 350 mmφ,
It is formed to about 450 mmφ or the like. The excavation drum 3 has a tapered shape (e.g., a slope of about 2/100) slightly spread downward.

Reference numeral 4 denotes a driving rod, which is slidably inserted into the driving tube 1 through an opening at the upper end 1b. A knocking head 4a is integrally attached to an upper portion of the driving rod 4. The knocking head 4a of this embodiment is a weight, and is expected to achieve a driving effect due to its inertial force.

Next, a digging operation by the apparatus of the above embodiment will be described with reference to FIGS. First, the lower end 1a of the driving pipe 1 is pierced into the center of the excavation position on the ground, and the driving pipe 1 is set upright.

When a breaker (not shown) is attached to the upper part of the driving rod 4 and a downward impact force or vibration is applied to the driving rod 4, the driving inertia force of the knocking head 4a accompanies the driving force. The driving tube 1 is driven downward.

When the driving tube 1 is driven, as shown in FIG. 2, the excavating drum 3 integrated therewith penetrates into the ground. With the penetration of the excavating drum 3, the excavated soil G 'is excavated and separated into a columnar shape. The radiation plate 2
Has a function of guiding the excavating drum 3 to penetrate straight into the soil G during the above-mentioned penetration.

When the excavation is performed to a predetermined depth (for example, about 1.2 m), a hook of a drawing machine (not shown) is appropriately hooked on a hook 1c attached to the upper end 1b of the driving pipe 1. 3, the excavating drum 3 is pulled up with excavated soil G '. After the excavation drum 3 is lifted, excavation holes H are formed in the soil G, and columns (not shown) are appropriately erected therein. The radiation plate 2 also has a function of preventing the excavated soil G 'from adhering to the excavation drum 3 and dropping into the excavation hole H when the excavation drum 3 is lifted.

In the above embodiment, a small driving device such as a breaker is attached to the driving rod to perform the digging work. However, the present invention is not limited to this. It may be directly attached to the upper part of the pipe body 1. When the excavation resistance of the ground is small, the above-described driving device is omitted, the knocking head 4a of the driving rod 4 is dropped,
The driving pipe 1 may be driven by hanging a rope or the like on the hook portion 1c of the driving pipe 1 and pulling it downward.

[0015]

[Effect of the Invention] By providing the driving rod and the knocking head slidably in the driving pipe body, the driving effect can be improved, and as a result, drilling work can be performed easily and quickly even on hard soil.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a digging device of the present invention.

FIG. 2 is an explanatory diagram of a digging operation.

FIG. 3 is an explanatory view of pulling up a digging device.

FIG. 4 is an explanatory diagram of a digging operation by a conventional machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Driving pipe 1a Lower end 1b Upper end 1c Hook 2 Radiating plate 2a Lower 3 Drilling drum 4 Driving rod 4a Knocking head G Soil G 'Excavated soil H Excavated hole

Claims (3)

(57) [Scope of request for utility model registration] 1. A driving pipe body having a length slightly longer than the depth of a hole to be drilled and having a sharpened lower end, and a driving drum attached to a lower portion of the driving pipe body via a radiation plate. In the drilling apparatus thus configured, a driving rod is slidably inserted into the driving pipe body from above, and a knocking head, which is a weight, is provided above the driving rod. Drilling equipment. 2. The digging apparatus according to claim 1, wherein the digging drum is formed in a tapered shape extending downward. 3. The drilling device according to claim 1, wherein a small driving device such as a breaker is mounted on the driving tube or the driving rod.