JPH0565792A - Excavating equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To improve work efficiency of excavation and earth removal. [Structure] A horizontal beam 24 is rotatably provided in a pit in a horizontal plane. A working unit 26 having a bucket 30 and the like is provided on the beam 24 so as to be movable as shown by an arrow b. Bucket 30
Is attached to the bucket support tube 29. A retractable earth discharging pipe 32 is accommodated in the bucket supporting pipe 29. Exhaust pipe 3
The suction port 32c at the lower end of 2 is located in the bucket 30. The soil excavated in the bucket 30 is immediately sucked from the suction port 32c at the lower end of the soil discharge pipe 32, rises, and is discharged to the outside of the mine. When changing the excavation site in the mine, the bucket 30 can be moved to an arbitrary position by moving the working unit 26 along the beam 24 or rotating the beam 24 itself.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravel gravel excavating device, and more particularly to an excavating device suitable for excavating and unloading a deep foundation having a large excavation depth.

[0002]

2. Description of the Related Art Conventionally, as an excavation machine for a deep foundation, there are mainly an arm telescopic excavator 1 shown in FIG. 4 and an underground support excavator 5 shown in FIGS. The arm telescopic excavator 1 includes an arm 3 attached to a boom 2 in a clamshell or backhoe, which is a type of excavator excavator.
Is made expandable and contractable, and the bucket 4 and the like are attached to the tip of this expandable arm 3. When excavating with the arm telescopic excavator 1, the arm 3 is put in the mine, then the arm 3 is extended as shown in the drawing, and the bucket 4 is excavated.
When the excavated soil is discharged, the arm 3 is contracted and the boom 2 is raised, the bucket 4 is taken out of the mine, and the excavated soil is dropped from the bucket 4, as shown by a chain double-dashed line.

The underground support type excavator 5 has a structure in which it is fixed to a liner plate (soil retaining material) 10 in the underground so that it can be moved to the lower side with excavation. That is, the excavator body 1 having the arm 12 to which the bucket 11 is attached
3 is attached to the lower surface of a horizontal beam 15 engaged with a guide rail 14 provided perpendicularly to the diametrically opposed wall surface portion of the liner plate 10 via a rotating mechanism section 16, The beam 15 can be moved downward along the guide rail 14 as the excavation is performed. A suction type soil discharging device is used for soil discharging, and a vertical soil discharging pipe 18 connected to the receiver tank 17 of the soil discharging device is provided in the mine.

[0004]

In the arm telescopic excavator 1 shown in FIG. 4, the arm 3 is moved every time the bucket 4 is excavated.
However, when the excavation depth becomes deep, it takes a lot of time to extend and retract the arm 3 for soil removal, resulting in a problem that work efficiency decreases. Further, in a steep mountain area, it is difficult to secure a place for installing the arm telescopic excavator 1, so there is a problem that it cannot be used at all. Furthermore, because the method is to hold the excavated soil to expand and contract the arm 3 and to move the entire arm out of the mine, there is a limit to the excavation depth due to the structural aspect of the arm, etc. Is.

In the underground support type excavator 5, the earth discharge pipe 18
Since the lower end of the soil, that is, the position of the soil discharge port 18a is constant,
Each time the bucket 11 is excavated, the arm 12 must be operated to move the excavated soil to the vicinity of the soil discharge port 18a each time, which causes a problem of poor work efficiency.

The present invention has been made to solve the above-mentioned conventional drawbacks, and provides an excavating device capable of immediately excavating excavated soil and improving work efficiency of excavation and excavation. The purpose is to

[0007]

In the excavation device of the present invention for solving the above-mentioned problems, a horizontal beam having a diameter direction is rotatably provided in a vertical substantially cylindrical mine shaft in a horizontal plane, and the beam is The excavation unit, the excavation unit support member that supports the excavation unit, the excavation unit drive unit that operates the excavation unit, and the earth removal pipe where the suction port faces the excavation unit are integrated into a working unit along the beam. It has a configuration in which it is horizontally movable.

[0008]

In the above structure, the soil excavated in the excavation section of the working section is immediately sucked from the suction port of the suction type soil discharge pipe,
Be excavated. When changing the excavation site, the excavation section of the working section can be moved to a desired position in the mine by an operation of moving the working section along the beam and an operation of rotating the beam itself in a horizontal plane. As a result, excavation and earth removal work can be performed simultaneously at any place in the mine.

[0009]

Embodiments of the present invention will be described below with reference to FIGS. The excavating device S of this embodiment is used, for example, for excavating a deep foundation using a liner plate (earth retaining material) 20 provided in a vertical cylindrical shape.
The pedestal 22 is installed on the ground so as to surround the liner plate 20, and the inner wall of the liner plate 20, for example, 4
A vertical guide 21 is fixed to the position, and a circular annular rail 23 is slidably attached to the guide 21 up and down. Both ends are supported at two diametrical positions of the circular annular rail 23, and the circular annular center is formed. A beam 24 is provided which is rotatable around a horizontal plane as indicated by an arrow a. The beam 24 is provided with a vertical post 25 for height adjustment having a built-in hydraulic cylinder at the center thereof. The post 25 supports the weight applied to the beam 24, and the beam 24 can rotate about the post 25 as described above. Is.

The beam 24 has a working unit 26 described below.
Is provided so as to be horizontally movable along the beam 24 as indicated by an arrow b. Although details of the mechanism for driving the working unit 26 along the beam 24 are omitted, it is preferable to use a hydraulic cylinder or a motor. As shown in an enlarged view in FIG. 2, the working unit 26 has a movable base 27 that can move along the beam 24, and a cylindrical portion 27 that is perpendicular to the lower surface side of the movable base 27.
a is integrally provided, and a bucket support pipe 29, which is an excavation portion support member, is slidably fitted in the tubular portion 27a. A bucket 30 that is an excavating portion is attached to the lower end of the bucket supporting pipe 29, and a bucket opening / closing hydraulic cylinder 31 that opens and closes the bucket 30 is attached to a flange portion 29a that is integrally provided on the outer surface of the bucket supporting pipe 29. ing. Further, in the bucket supporting tube 29, a fixed tube 32a penetratingly fixed to the movable table 27 and the fixed tube 32a.
An earth discharging pipe 32 including a sliding pipe 32b slidable in a is accommodated, and a lower end of the earth discharging pipe 32 (a lower end of the sliding pipe 32b) extends into the bucket 30. Further, a bucket up-and-down hydraulic cylinder 33 in which a cylinder rod is connected to a flange portion 29a integral with the bucket supporting pipe 29 on the outer surface of the tubular portion 27a of the movable table 27, and a sliding pipe 32 of the earth discharging pipe 32.
Hydraulic cylinder 34 for expanding and contracting the waste pipe for moving b up and down
Is provided. The hydraulic cylinder 34 for expanding and contracting the drainage pipe is provided with a slit 29b provided in a part of the wall of the bucket supporting pipe 29.
The tip of the cylinder rod is connected to a bracket 35 that is integral with the sliding tube 32b that protrudes to the outside, and the sliding tube 32b is moved up and down through this bracket 35.

Further, the beam 24 is provided with a hole drilling machine 40 and a rock drilling machine 41.

The upper end of the soil discharge pipe 32 of the working unit 26 is the beam 2
4 is attached to the upper end of the universal pipe joint 43, the same universal pipe joint 44 is attached to the pedestal 22 side, and two universal pipe joints 43, 44 are inserted between the two pipes. 45a, 45
They are connected by an expandable intermediate drainage pipe 45 made of b.
The universal pipe joint 44 on the gantry 22 side is connected to a horizontal earth-discharging pipe 46 along the gantry 22, and the horizontal earth-discharging pipe 46 is connected to a receiver tank 48 communicating with a vacuum suction device (not shown) via a duct 47. ..

Excavation work by the above-described excavation device S will be described below. Before excavation work, the height of the post 25 containing the hydraulic cylinder is adjusted to adjust the beam 24.
Set the height of the to an appropriate height. At the time of excavation, the bucket supporting pipe 2 that operates the bucket up / down hydraulic cylinder 33 to slide the bucket 30 in the tubular portion 27 a of the movable table 27.
The excavation is carried out by moving the bucket 30 up and down integrally with 9, and operating the bucket opening / closing hydraulic cylinder 31 to open / close the bucket 30.

The soil excavated in the bucket 30 is sucked from the suction port 32c at the lower end of the earth discharging pipe 32 of the working unit 26 by the vacuum pressure by a vacuum suction device (not shown). in this case,
If necessary, the hydraulic cylinder 34 for expanding and contracting the earth discharging pipe is operated, and the sliding pipe 32b of the earth discharging pipe 32 is inserted through the bracket 35.
Is moved up and down to bring the suction port 32c to an appropriate height position.
For example, when the bucket 30 is open, it is raised, and when the bucket 30 is closed, it is lowered. The soil sucked into the soil discharge pipe 32 rises in the soil discharge pipe 32,
Subsequently, it rises in the intermediate soil discharge pipe 45, moves horizontally in the horizontal soil discharge pipe 46, is taken into the receiver tank 48, and is discharged from the lower part thereof. In this way, in this excavation / earth removal work, the soil excavated by the bucket 30 is immediately sucked and discharged from the suction port 32c, so that it is not necessary to move the excavated soil for soil discharge, and The bucket 30 need not be moved for excavation, and the bucket 30 need only be dedicated to excavation. Therefore, excavation work is rarely interrupted due to excavation, and work efficiency is extremely high.

If necessary, the boring machine 40 carries out the boring work, and the rock drilling machine 41 carries out the rock drilling work. in this way,
Since it is possible to perform three operations at the same time: excavation, rock drilling, and drilling, the work efficiency is extremely high.

When changing the excavation site in the mine, a hydraulic cylinder or motor (not shown) is operated to move the working portion 26 along the beam 24 as shown by an arrow b, or a hydraulic cylinder or motor (not shown) is operated. Let beam 2
4 is rotated around the post 25 as indicated by an arrow a to move the bucket 30 of the working unit 26 to a desired position in the mine. This makes it possible to efficiently perform excavation work anywhere in the mine.

It should be noted that the earth discharging pipe 32 in the working section 26 is preferably made to have a telescopic structure of the fixed pipe 32a and the sliding pipe 32b as in the embodiment for effective earth discharging work.
A structure that does not expand and contract is also possible.

Further, in the embodiment, the earth discharging pipe 3 in the working portion 26
2 is accommodated in the bucket supporting tube 29, but is not necessarily limited thereto.

The intermediate earth pipe connecting the earth pipe 32 in the working section 26 and the horizontal earth pipe 46 outside the mine is connected via the universal pipe joints 43 and 44 in the embodiment so that it can be inclined. , By this, the structure of the earth discharge pipe on the ground side is simplified, but it is not necessarily limited to this, and for example, the earth discharge pipe 32 in the working unit 26 is directly raised vertically without the universal pipe joint, It is also possible to adopt a structure in which the upper end of the earth discharging pipe that has been erected up to and the receiver tank 48 are connected by a horizontal earth discharging pipe that is capable of expansion and contraction and swiveling in a horizontal plane.

[0020]

According to the present invention, the soil excavated in the excavating portion such as a bucket is immediately sucked and discharged from the suction port of the suction type discharge pipe, so that the work efficiency of excavation and discharge can be improved. Remarkably improved.

The movement for moving the excavation section to a desired position in the pit by the operation of moving the working section along the beam and the operation of rotating the beam itself is a planar movement and is simple. If so, control becomes simple.

According to a second aspect of the present invention, the excavation part support member is constituted by a vertical pipe, and the earth excavation pipe is slidably provided in the excavation part support pipe. The excavation part supporting member can be omitted, which is structurally efficient and simplifies the structure of the excavation device. In addition, the soil discharge pipe can be housed vertically in the bucket, which also simplifies the structure.
Suction of excavated soil is extremely easy and efficient.

If the earth drainage pipe of the working section is connected to the expandable earth drainage pipe lowered from the pedestal provided on the ground as in claim 3, the beam can be lowered only and the excavation depth at the time of excavating the deep foundation foundation can be reduced. Can be easily accommodated. In addition, since the gantry can be easily installed without shaving the ground even on a sloping ground, the excavation device of the present invention can be used on a sloping ground without cutting the ground.

According to a fourth aspect of the present invention, if a universal pipe joint is provided at the upper end of the soil discharge pipe of the working section and a universal pipe joint is connected to the universal pipe joint on the cradle side by a stretchable intermediate soil discharge pipe,
The earth drainage pipe outside the mine can be fixedly installed, and the structure is simplified.

[Brief description of drawings]

FIG. 1 is a front view of an excavating device showing an embodiment of the present invention.

FIG. 2 is an enlarged view of an essential part of the excavator of FIG. 1, a part of which is shown in cross section.

FIG. 3 is an enlarged plan view of a main part of the excavator of FIG.

FIG. 4 is a front view of an arm telescopic excavator, showing an example of a conventional excavator.

FIG. 5 shows another example of a conventional excavator, and is a perspective view of an underground mine-support excavator.

FIG. 6 is a schematic plan view of the underground support excavator of FIG. 5.

[Explanation of symbols]

 20 Liner Plate (Soil Retaining Material) 22 Stand 24 Beam 25 Height Adjusting Post 26 Working Section 27 Movable Platform 27a Tube Section 29 Bucket Support Pipe (Excavation Section Support Member) 29a Flange Section 30 Bucket (Excavation Section) 31 Bucket Open / Close Hydraulic cylinder (excavator drive unit) 32 drainage pipe 32a fixed pipe 32b sliding pipe 32c suction port 33 bucket up / down hydraulic cylinder 34 drainage pipe expansion / contraction hydraulic cylinder 35 bracket 43, 44 universal pipe joint 45 intermediate drainage pipe 46 horizontal discharge Clay pipe

Front page continuation (72) Inventor Yasuo Kojima 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Electric Line Co., Ltd.

Claims (4)

[Claims] 1. A horizontal beam (24) having a diametrical direction is rotatably provided in a vertical substantially cylindrical mine shaft in a horizontal plane, and the beam (24) is provided with an excavation section (30) and an excavation section (30). The excavation part support member (29) that supports the excavation part (30), the excavation part drive part (31) that operates the excavation part (30), and the drain pipe (the suction port (32c) facing the excavation part (30) ( An excavating device, characterized in that a working part (26) integrally formed with (32) is provided so as to be horizontally movable along the beam (24). 2. A vertical pipe (29) for the excavation support member.
2. The excavating device according to claim 1, wherein the excavating part supporting pipe (29) is slidably provided in the excavating part supporting pipe (29). 3. An extensible intermediate earth discharge pipe (45) is lowered from a gantry (22) assembled on the ground, and a lower end of the intermediate earth discharge pipe (45) is attached to the earth discharge pipe (32) of the working section (26).
The excavator according to claim 1, wherein the excavator is connected to an upper end of the excavator. 4. A universal pipe joint (43) is provided at an upper end portion of the earth discharging pipe (32) of the working unit (26), and a similar universal pipe joint (44) is arranged on the pedestal (22) on the ground. The excavating device according to claim 3, wherein the universal pipe joints (43) and (44) are connected by an expandable intermediate earth discharging pipe (45).