JPH06248868A - Portable excavating machine - Google Patents

Abstract

PURPOSE:To enhance construction efficiency by rotating a cutting blade installed to a screw blade with power of a drive source in the case main body provided with a handle by way of a main shaft so as to excavate a ground and discharging earth and sand from an earth and sand discharge hole. CONSTITUTION:During excavation work, a worker carries a portable excavation machine 1 with himself to a spot to be excavated. The worked applies a cutting blade 7 to the excavation spot, holding a handle and drives a motor 15 by switching on an operation switch 21. Then, when the motor is driven, a main shaft 19 is rotated so that the cutting blade 7 and a screw blade 9 are rotated, thereby excavating a hole at the excavation spot and feeds the excavated earth and sand to an earth and sand transfer pipe 503. In the earth and sand transfer pipe 503, the screw blade 9 is rotated and force-feeds the excavated earth and sand, even if mixed with water, from the earth and sand transfer pipe 503 to an earth and sand hose smoothly and discharges the earth and sand to proper places. When it is necessary to excavate a spot which is too narrow for a heavy machine to enter or when it is difficult to carry a heavy machine in an excavation spot due to its small space, excavation work is carried out mechanically. This construction makes it possible to execute excavation work efficiently and easily without depending on heavy labor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable excavator suitable for excavation in a place where heavy equipment cannot be put in, point excavation and the like.

[0002]

2. Description of the Related Art Excavation work is carried out in various works such as civil works and construction works. When the excavation work is performed using various heavy equipment such as earth auger and Yumbo, the excavation work does not become heavy labor and excavation efficiency is good.

[0003]

However, excavation in a narrow place where heavy equipment cannot be put in, or excavation in a place where there is space but heavy equipment cannot be carried out, is carried out manually by using a scoop or the like. It has to be hard work. In particular, when excavating in a narrow place, it is necessary to rely on human power and the worker must perform the excavation work in an unreasonable posture, which takes a long time for excavation and cannot improve the efficiency of excavation work. The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a portable excavator that can efficiently perform excavation work even in the case of excavation work that must rely on human power. Especially.

[0004]

To achieve the above object, the present invention provides a case body having a handle attached thereto, and a cylindrical case connected to the case body and extending a predetermined length from the case body. A drive source disposed inside the case body, a main shaft that is rotated by the power of the drive source, and a main shaft that is disposed inside the cylindrical case and rotated by the main shaft to remove the earth and sand from the case body. Side, a screw blade that is transferred to the side, a cutting blade that is disposed at the tip of the screw blade and is exposed at the tip of the tubular case, and is rotated by a main shaft to excavate earth and sand, and the case body of the tubular case. It is characterized in that it is provided with an earth and sand discharge port provided in a side portion and an operation section for controlling the drive source.

Further, according to the present invention, a branch pipe part for changing the transfer direction of the earth and sand transferred by the screw blades is formed in a portion of the cylindrical case near the case body, and the earth and sand discharge port is formed in the branch pipe part. It is characterized in that it is provided at the end. Further, the present invention is characterized in that a sediment discharging hose is detachably connected to the sediment discharging port. Further, the present invention is characterized in that the branch pipe portion is provided with an auxiliary screw blade that is connected to the drive source side and rotates to transfer the earth and sand to the earth and sand discharge port side.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A portable excavator according to the present invention will be described below with reference to the accompanying drawings. 1 is a plan view of a portable excavator, FIG.
Shows the same front view, and FIG. 3 shows the same sectional front view. A portable excavator 1 includes a case body 3, a tubular case 5, a cutting edge 7, screw blades 9, a handle 11, a sediment discharge hose 13, and the like. The case body 3 has a cylindrical shape, and an electric motor 15 and a speed change mechanism 17 connected to the electric motor 15 are arranged inside the case body 3. The power of the motor 15 is appropriately changed by the speed change mechanism 17 and taken out from the main shaft 19.
Is provided so as to project from the speed change mechanism 17, and reference numeral 20 in the drawing denotes a power cable.

Further, on the outer peripheral portion of the case main body 3, four handles 11 are projectingly arranged at equal intervals in the circumferential direction, and one of the handles 11 is provided with an operation switch 21 at the base thereof. By the operation switch 21, for example, the on / off of the electric motor 15 and the rotation speed and the rotation direction of the main shaft 19 are set.

The cylindrical case 5 is connected to the case body 3 in the direction in which the main shaft 19 projects. The tubular case 5 is connected to the case body 3 and extends in a straight line, a connecting pipe portion 501, a straight line extending along the extension line of the connecting pipe portion 501, and a straight line extending in the sediment transport pipe portion 503. 5
And a branch pipe portion 505 branched in a curved shape from a portion of the connection pipe portion 03 near the connecting pipe portion 501. The branch pipe section 5
A sediment discharge port 505A is formed at the end of 05, and the sediment discharge hose 13 is detachably connected to the sediment discharge port 505A. The connection pipe part 501 and the earth and sand transfer pipe part 5
A boundary portion with 03 is defined by a wall portion 507, and the main shaft 1
9 is inserted in the wall portion 507 in an airtight and liquid-tight manner and is inserted from the connecting pipe portion 501 into the earth and sand transfer pipe portion 503.
The bearing portion 22 supports a portion of the portion 9 near the tip.

The cutting edge 7 is attached to the tip of the main shaft 19 and is exposed at the tip of the earth and sand transfer pipe portion 503. The cutting edge 7 excavates by rotating the main shaft 19, and part of the excavated earth and sand is sent to the earth and sand transfer pipe portion 503.

The screw blade 9 is composed of a main shaft 19 and a blade body 901 attached to the portion where the main shaft 19 is located in the earth and sand transfer pipe portion 503. The transfer pipe part 503 and the screw blade 9 function as a screw pump, and pumps the excavated earth and sand from the tip of the earth and sand transfer pipe part 503 toward the branch pipe part 505. In addition, the portable excavator 1 having the above configuration
The weight is preferably 30 kg or less so that it can be held and moved.

Since this embodiment is constructed as described above, at the time of excavation, the operator carries the portable excavator 1 to the excavation site, holds the handle 11 and applies the cutting edge 7 to the excavation site,
The motor 15 is driven by the operation switch 21. As a result, the main shaft 19 rotates, and the cutting edge 7 and the screw blade 9 rotate. Then, a hole is excavated at the excavation site by the rotation of the cutting edge 7, and the excavated earth and sand is transferred to the earth and sand transfer pipe section 50.
It is sent to 3. The screw blade 9 is rotating in the earth and sand transfer pipe 503, and the earth and sand transfer pipe 503 is rotated.
Since the screw blades 9 and the screw blades 9 function as a screw pump, the excavated earth and sand is smoothly pumped from the earth and sand transfer hose 13 to the earth and sand discharge hose 13 even if the earth and sand are mixed with water. It is discharged to the place.

Therefore, the excavation work can be carried out mechanically by the portable excavator 1 at a narrow place where a heavy machine cannot be put in, or at a place where there is a space but the heavy machine cannot be carried. Even in the case of excavation work that has traditionally had to rely on human power as described above, by using the portable excavator 1, the excavation work does not become a heavy labor, and the excavation work can be performed efficiently and easily.

FIG. 4 shows a modification of the above-mentioned embodiment in which a cylindrical case 5 is provided.
FIG. In this modification, the branch pipe portion 505
A linear portion 511 having a predetermined length is formed at the tip of the, and the auxiliary screw blade 31 is arranged on the linear portion 511. The auxiliary screw blade 31 includes a rotating shaft 3101 and a blade body 3103 attached to the rotating shaft 3101. The rotating shaft 3101 forms a wall portion 507 at the boundary between the connecting pipe portion 501 and the earth and sand transfer pipe portion 503. Airtight and liquid-tight,
Connected to a gear portion 1901 provided on the main shaft 19,
A portion of the rotating shaft 3101 near the tip is supported by the bearing 32. The rotating shaft 3101 is rotated by the power of the motor 15 via the gear portion 1901, and the linear portion 5
Also in 11, the function as a screw pump is exhibited by the auxiliary screw blade 31. According to this modified example, the screw blade 9 provided in the earth and sand transfer pipe portion 503.
And the screw blade 9 provided on the straight line portion 511 can enhance the pressure-feeding capacity of the earth and sand, and the earth-and-sand discharge hose 13
It is advantageous when using the extension.

In the embodiment, the case where the earth and sand discharge hose 13 is used has been described, but the portable excavator 1 may be used without the earth and sand discharge hose 13 depending on the excavation location, the excavation depth, and the like. .

[0015]

As is apparent from the above description, according to the present invention, a case body provided with a handle, a cylindrical case connected to the case body and extending a predetermined length from the case body, A drive source disposed inside the case main body, a main shaft that rotates by the power of the drive source, and a main shaft that is disposed inside the cylindrical case and rotated by the main shaft to transfer the earth and sand to the case main body side. A screw blade to be transferred, a cutting blade disposed at the tip of the screw blade and exposed at the tip of the cylindrical case, and rotated by a main shaft to excavate earth and sand, and a portion of the cylindrical case near the case body. Since it has a sediment discharge port provided in the part and an operation unit for controlling the drive source, even if the excavation work has to rely on human power, the work time is shortened and if the excavation work is hard work. Without excavation Work it is possible to perform.

[Brief description of drawings]

FIG. 1 is a plan view of a portable excavator.

FIG. 2 is a front view of a portable excavator.

FIG. 3 is a sectional front view of a portable excavator.

FIG. 4 is a cross-sectional view of a main part of a tubular case in a modification of the portable excavator.

[Explanation of symbols]

 1 Portable Excavator 3 Case Body 5 Cylindrical Case 7 Cutting Edge 9 Screw Blade 11 Handle 13 Sediment Discharge Hose 15 Motor 17 Gearbox 19 Main Spindle 21 Operation Switch 505A Sediment Discharge Port

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeru Yoshida 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd. (72) Inventor Shinji Murofushi 4-6-15 Sendagaya, Shibuya-ku, Tokyo Company Fujita

Claims (4)

[Claims] 1. A case main body provided with a handle, a cylindrical case connected to the case main body and extending a predetermined length from the case main body, and a drive source disposed inside the case main body. A main shaft that is rotated by the power of the drive source; a screw blade that is disposed inside the cylindrical case and that is rotated by the main shaft to transfer earth and sand to the case body side; A cutting edge that is provided and exposed at the tip of the cylindrical case and is rotated by a main shaft to excavate earth and sand; a earth and sand discharge port provided in a portion of the cylindrical case near the case body; A portable excavator, comprising: an operation unit for controlling the. 2. A branch pipe portion is formed in a portion of the cylindrical case near the case body, the branch pipe portion changing a transport direction of the sediment transferred by a screw blade, and the sediment discharge port is provided at an end of the branch pipe portion. The portable excavator according to claim 1, which is provided. 3. The portable excavator according to claim 1, wherein a sediment discharging hose is detachably connected to the sediment discharging port. 4. The mobile phone according to claim 2, wherein the branch pipe portion is provided with an auxiliary screw blade that is connected to the drive source side and rotates to transfer the earth and sand to the earth and sand discharge port side. Excavator.