JPH08121069A - Simple digging device - Google Patents

Abstract

(57) [Abstract] [Object] An object of the present invention is to provide a simple digging device that enables an amateur to easily dig a hole in the ground in a general household. [Structure] A cylindrical seal plate having an opening in the center of the upper surface, the lower end peripheral edge of which is pushed into the ground, and the tip opening,
The base end is closed, and the middle part is inserted into the opening via a ball joint so that it is slidable in a substantially liquid-tight manner in the vertical direction, and is rotatably inserted. A water supply pipe provided along the direction, a nozzle attached to the tip of the water supply pipe for discharging a water jet, a water pump communicating with the base end of the water supply pipe via a water supply hose, and an excavation pipe at one end The drainage hose communicates with the vicinity of the base end and has the other end opened. [Effect] The water pressure from the water pump makes it possible to easily dig a hole of any diameter and depth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple digging device which enables an amateur to easily dig a hole in the ground at home.

[0002]

2. Description of the Related Art As a method of making a hole in the ground by hydraulic pressure, hydraulic coal mining, water jet cutting, or green cutting by a high pressure jet is generally known. However, these methods use a large-scale apparatus, and cannot be easily used for digging holes in general households.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its main object is to provide a simple digging device which enables an amateur to easily dig a hole in the ground in a general household. Especially.

[0004]

In order to solve the above-mentioned problems, the present invention provides a water pipe for discharging a water jet toward the ground coaxially with an excavation pipe forming a drainage channel, and these are installed on the ground. The seal plate, which is provided in close contact with the seal plate, is provided so that it can be tilted about this center and the tip is at least movable up and down. That is,
According to the invention, a cylindrical seal plate having an opening at the center of the upper surface and having a lower end opened, and an opening at the tip and being inserted substantially liquid-tightly into the opening at an intermediate position and held tiltably. And at least the tip of which can be moved up and down, a water pipe provided along the longitudinal direction in the drill pipe, a nozzle provided at the tip of the water pipe for discharging a water jet, and a water supply hose. A water supply unit that communicates with the water pipe via the water supply unit to supply water with a water pressure capable of digging;
A simple hole digging device comprising: a drain hose having one end communicating with a pipe and the other end opened. The water supply unit only needs to be able to supply water having a water pressure capable of digging a hole, and a water pump or general tap water can be used. It should be noted that a branch nozzle may be provided so as to be branched from the water pipe portion of the connection portion between the drain hose and the excavation pipe so that the tip of the branch nozzle opens toward the drain hose direction. Further, a valve mechanism for controlling the amount and pressure of water from the water supply hose may be provided at the upper end of the water pipe. Further, an adjusting screw for adjusting the positional relationship between the tip of the excavating pipe and the tip of the water pipe may be provided at the upper end of the water pipe.

[0005]

The tubular seal plate is fixed to the ground in a substantially liquid-tight state, and when a water jet is discharged from the tip of the water pipe in that state, the earth and sand in the vicinity liquefy and water pressure from the water supply section causes It is liquefied and this liquefied earth and sand is removed to the ground via the drainage channel between the outer circumference of the water pipe and the inner surface of the excavation pipe. The drill pipe is rotated about the ball joint according to the desired hole size, and the hole is appropriately expanded. As the hole becomes deeper, the drill pipe and the water pipe can be pushed deep into the ground to dig a hole of any depth.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing a simplified digging device according to the present invention with a partial cross section. As shown in the figure, this device mainly includes a cylindrical seal plate 11,
It is composed of a drill pipe 12, a water pipe 13, a nozzle 14, a water pump 15, and a drain hose 16.

As shown in the enlarged view of FIG. 2, the cylindrical seal plate 11 has a shallow cylindrical shape and has an opening at the center of its upper surface. A ball joint 18 is provided in the opening through a bearing 17. It is rotatably provided. In order to maintain the liquid tightness between the bearing 17 and the ball joint 18, a packing 19 is provided on the inner wall surface of the bearing 17, and in order to keep the liquid tightness between the drill pipe 12 and the ball joint 18. A packing 20 is also provided inside the ball joint 18. Cylindrical seal plate 11
The lower end 11a of the circular ring is slightly sharp so that it easily bites into the ground and enhances the sealing effect.

The drill pipe 12 has an elongated cylindrical shape,
The front end is opened, the base end is closed, and a discharge port 21 for connecting to the drain hose 16 is provided laterally near the base end. The excavation pipe 12 is inserted into a ball joint 18, and is slidable within the ball joint 18 and rotatable with the ball joint 18. A handle 22 for operating the rotation of the excavation pipe 12 is provided at the base end of the excavation pipe 12. A water pipe 13 is coaxially provided inside the excavation pipe 12 over substantially the entire length thereof.

The water pipe 13 has an elongated cylindrical shape, and a nozzle 14 for ejecting a water jet toward the ground is attached to the tip of the water pipe 13. The base end of the water pipe 13 extends through the central part of the closed base end of the excavation pipe 12, a throttle valve (not shown) is provided in the extension, and a connection port 24 extends laterally upstream of the throttle valve. It communicates with the water supply hose 25. Reference numeral 26 in the figure is a pump controller for controlling this throttle valve. An adjusting screw 27 is provided at the base end of the water pipe 13 so that the positional relationship between the tip of the water pipe 13 and the tip of the excavation pipe 12 can be adjusted. The water pump 15 is for sending pressurized water to the water pipe 13, and communicates with a connection port 24 of the water pipe 13 via a water supply hose 25.

Next, a method of using the simple digging device having this structure will be described. First, the tubular seal plate 11 is set by pushing it so that its annular lower end bites into the ground E. Then, the drill pipe 12 is inserted into the ball joint 18 together with the water pipe 13 with the lower end thereof facing downward.
Further, by operating the pump controller 26, the water pump 1
5 is operated to adjust the amount of water and the water pressure, the discharge state of the sand is checked, and the positional relationship between the nozzle 23 and the excavation pipe 12 is optimally adjusted via the adjusting screw 27. If necessary, the excavation pipe 12 is rotated by using the handle 22 (shown by the arrow a) to gradually push down while expanding the hole to a required size and gradually excavating the hole. The water continuously supplied from the water pump 15 vigorously blows out as a water jet from the nozzle 23 to dig up the earth and sand, and the earth and sand mix with the water to form a mud, which is sealed by the tubular seal plate 11 and loses its escape. The muddy material D moves upward inside the drill pipe 12, is sent to the drain hose 16 through the discharge port 21, and is finally discharged to the outside.

When the hole is dug to a predetermined depth, the water pump 15 is stopped, the excavation pipe 12 is extracted from the ball joint 18 together with the water pipe 13, and the tubular seal plate 11 is separated from the ground to complete the excavation. Water remains in the excavated hole, but gradually penetrates into the ground, leaving only the hole. In this way, the depth and diameter of the hole can be appropriately adjusted by the pushing length of the excavation pipe 12 and the size of rotation, and a hole of a desired size can be dug easily and in a short time.

FIG. 2 shows an essential part of a simple digging device according to another embodiment of the present invention, in which a drain hose 16 is provided.
To the water pipe 15 at the connection between the drilling pipe 12 and
A branch nozzle 30 is provided so as to branch from the water pipe 15 with its tip opening toward the drain hose 16. By ejecting water from this branch nozzle 30, an ejector effect is produced and the discharge efficiency of earth and sand can be improved. For other configurations and effects, see FIG.
Since it is the same as the embodiment shown in FIG.

In the above-mentioned embodiment, the case where the water tank is used as the water supply unit is illustrated, but even in the case of tap water supplied from a general water pipe, the water pressure can be used to dig a hole. There is. Further, the excavating pipe and the water pipe may be configured to be expandable and contractible instead of being moved up and down. Alternatively, it may be constant. In addition, it goes without saying that various design changes can be made without departing from the spirit of the present invention.

[0014]

EFFECTS OF THE INVENTION The simple digging device of the present invention is structurally simple, and main parts such as a drilling pipe and a water pipe can be formed of hard plastic such as hard vinyl chloride, so that it is inexpensive as a whole. Can be manufactured,
Moreover, since it is easy to operate, even an amateur in a general household can easily dig a hole in the ground, a hole for digging a tree in a general household, a hole for a foundation pile or a foundation of a small building. It can be widely used for digging.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a partial cross-section of one embodiment of the simple hole digging device of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of the simple hole digging device shown in FIG.

FIG. 3 is a cross-sectional view of essential parts showing another embodiment of the simple hole digging device of the present invention.

[Explanation of Codes] 11 ... Cylindrical seal plate, 12 ... Drilling pipe, 13 ... Water pipe, 14 ... Nozzle, 15 ... Water pump, 16 ... Drain hose, 17 ... Bearing, 18 ... Ball joint, 19, 20 ... Packing , 21 ... discharge port, 22 ... handle, 24 ... connection port, 25 ... water supply hose, 26 ... pump controller, 27 ... adjusting screw, 30 ... branch nozzle.

Claims (5)

[Claims] 1. A cylindrical seal plate having an opening at the center of its upper surface and having its lower end opened, and a tip opening, and at a midway position is substantially liquid-tightly inserted and held tiltably. And at least the tip of which can be moved up and down, a water pipe provided along the longitudinal direction in the drill pipe, a nozzle provided at the tip of the water pipe for discharging a water jet, and a water supply hose A water supply unit for supplying water at a water pressure capable of digging by communicating with a water pipe through a drainage hose having one end communicating with the pipe and the other end open. Simple digging device. 2. A cylindrical seal plate having an opening at the center of its upper surface and having its lower end opened, and its front end is open and its base end is closed, and its middle part is substantially in the opening through a ball joint. Drilling pipe that is vertically and liquid-tightly slidable vertically and rotatably, a water pipe vertically movable along the longitudinal direction at the axis of the drilling pipe, and the water pipe A nozzle provided at the tip of the pipe for ejecting a water jet, a water supply part that consists of a water pump that communicates with the base end of the water pipe via a water supply hose or a tap water that supplies general tap water, and one end of the pipe A simple digging device comprising: a drain hose communicating with the vicinity of the base end and having the other end open. 3. A branch nozzle provided at a portion of a water pipe at a connecting portion between the drain hose and the excavating pipe, the branch nozzle having a tip opening toward the drain hose. Item 1. A simple digging device according to item 1 or 2. 4. The simple digging device according to claim 1, wherein a valve mechanism for controlling the amount of water from the water supply hose and the water pressure is provided at the upper end of the water pipe. . 5. The adjusting screw for adjusting the positional relationship between the tip of the excavating pipe and the tip of the water pipe is provided at the upper end of the water pipe. Simple digging device.