JPH02148588A - Grounding of long earth electrode material deep under ground by striking installation - Google Patents

Abstract

PURPOSE:To bury by striking a metallic tube, etc., for a long earth electrode material assuredly in a short processing period by mounting a groove for the generation of automatic rotation and a rock crushing hard chip material, and by adding stroke by a hydraulic, air pressure, or electric hammer from above. CONSTITUTION:Round screws 11 are fixed so as to contact with both edges of a tubular earth electrode material 1 for many materials to be linked together. A pyramid body 7 is provided on the lower edge of the driven, and many pieces of hard chips 8 for crushing gravel or rock are fixed. A groove 9 is formed on the pyramid body 7 so as to generate rotation automatically in the reverse direction 10 to a rotational direction 12 to which the round springs 11 are fitted when the stroke intrusion force is given from above of the electrode material 1. When the electrode material 1 is linked and driven by a hammer mechanism 6 from the upper end of a ground surface 4 into the ground, hard gravel 5 and so on are crushed by the piece 8, for the electrode material 1 to be intruded deep into the ground. After the striking installation, a conductor 13 is connected with the upper end of the electrode material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, an electrode rod l for driving used in an earthing construction method in which a long rod-shaped ground electrode material is driven into the ground is driven into the ground as shown in Fig. 1. The angle 3 of the provided tip portion 2 is usually in the shape of an acute needle of about 50 to 60 degrees.

As shown in Fig. 2, if there are gravel or a front body 5 at the bottom of the ground surface 4, apply a strong impact force to the rod using a hammer or a driving machine 6 from the top of the rod. In addition to
If the gravel or progenitor has high hardness, the destructive force acting at the point of the sharp point will not be able to penetrate into the ground.

Furthermore, if a long-term impact force is applied, the metal tip will be crushed by the force acting on the tip, and the penetration force will be significantly reduced, making it impossible to penetrate deeper than the depth where gravel and the forebody are present.

The present invention can be applied even when conglomerate or hard rock exists underground.
This relates to an earthing method that can efficiently connect rods or long tubular ground electrode materials and easily drive them deep underground. Attach round screws that can be connected strongly to both ends of the mating material or tubular ground electrode material so that multiple screws can be connected, and screw the lower end into a semicircle, oval, parabola, or obtuse pyramid shape. When a large number of hard chip pieces 8 for crushing gravel or rock bodies are attached to the pyramid body 7 of the vertebral body, and an impact penetration force is applied to the vertebral body from the upper part of the ground metal material l, the round screw 11
A groove 9 is formed which automatically generates a rotational force in a direction lO opposite to the fitting rotation direction 12.

Also, the cone can be made into a flat shape as shown in Fig. 4, and the water passage hole 13
The vertebral body can be prevented from being annealed due to heat generated during impact by water flow.

In order to use the long ground electrode material as a ground electrode, as shown in FIG. When the long ground electrode material is driven into the earth, the sand and gravel 5 is crushed by the strong hard chip piece 8 as shown in FIG. 6, and the long ground electrode material is penetrated deep into the ground to a desired target depth.

By connecting the conductive wire 13 to the upper end of the electrode material after hammer contact, it can be easily applied to sandy gravel and hard rock areas where conventional hammer contact is impossible.
In addition, it becomes possible to install the ground electrode by hammer contact in a short construction period.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the tip of a conventional drive-in grounding rod;
Figure 2 is a conceptual diagram of a conventional rod-shaped ground electrode being driven into the ground, Figure 3 is a diagram of a vertebral body attached to the rod or tubular ground electrode material of the present invention, and Figure 4 is a diagram of the vertebral body being flattened. FIG. 5 is a diagram showing the state of the ground electrode material when it is cast into a shape, FIG. 5 is a diagram showing the condition of the ground electrode material being placed by this method, and FIG. 6 is a diagram showing the condition of the underground part of the ground electrode material that has been crushed and buried by crushing conglomerate rock. ■, rod or tubular ground electrode material 2, metal pointed end portion 3, angle of metal pointed end portion 4, ground surface 5, gravel or plaster 6, hammer mechanism for driving 7, vertebral body 8, hard chip material for crushing 9. Rotation direction of rotational force generation groove IO1 cone 11, round screw fitting part 12, round screw fitting rotation direction

Claims (1)

[Claims] A semicircle, ellipse, parabola, flat,
At the time of pouring, a groove for automatic rotational force generation and a hard chip material for rock crushing are attached to an obtuse pyramid or a cone having a similar shape to this shape, and then it is struck from the top with a hydraulic, pneumatic or electric hammer. A grounding method in which a long ground electrode material is reliably driven and buried to the desired depth underground in hard gravel or hard rock areas in a short period of time by applying force to become a ground electrode.