KR200296406Y1 - Smoll Vertical Hole Excavator - Google Patents

Abstract

The present invention relates to a small diameter vertical shaft drilling rig that drills deep and small diameter shafts of vertical shafts that are excavated before drilling non-reachable tunnels. The present invention relates to a small diameter vertical shaft excavation apparatus for constructing a vertical shaft having a deep depth and a small diameter at a place where a working space is narrow such as a roadside where a section and a house are densely packed.

Therefore, the present invention is a power unit chamber, a power unit and a pneumatic and hydraulic device, not shown, the table is mounted on the upper surface of the chamber, and a plurality of table support jacks of the upper end is fixed to the lower surface of the table And a first main horizontal boom body and a second main horizontal boom body of a predetermined length fixedly mounted to the left and right sides of the table, and inserted into left and right ends of the first and second main horizontal boom bodies, respectively. A plurality of longitudinal horizontal boom body, the longitudinal horizontal boom body and the longitudinal horizontal boom body and the first and second main horizontal boom body which is attached to the protruding end of the vertical horizontal boom body at both ends of the first and second main horizontal boom body Horizontal boom body extension means for entering and exiting the body, a fixed-length rack gear fixed to the center of the outer upper surface of the first and second main horizontal boom bodies in a left / right length direction, and the first and second Each of the drawn lengths from the main horizontal boom body Auxiliary channel is fixed to the outer surface of the vertical boom body and the auxiliary rack gear is fixedly mounted on the outer upper surface of the vertical horizontal boom body, and the main vertical boom body of a predetermined length installed on one outer surface so that the excavator is moved up and down W, a vertical longitudinal boom body of a predetermined length is inserted so that a predetermined length is input and output to the lower end of the main vertical boom body, and a support piece is attached to the lower end of the main vertical boom body, and the lower end of the vertical vertical boom body is pulled in and pulled out to the lower end of the main vertical boom body. A vertical boom body telescopic jack which is fixed at both ends of the main vertical boom body and the vertical vertical boom body in the up / down length direction, and the first vertical boom body to be rotated in the horizontal and horizontal directions and in the vertical and horizontal directions. And it provides a small diameter vertical shaft drilling device consisting of a fastening portion connected to the second main horizontal boom body.

Description

Small Diameter Vertical Excavator {Smoll Vertical Hole Excavator}

The present invention uses a large excavation equipment in the vertical pit to excavate the non-adhesive tunnel, or it has a deep depth and diameter in a place where the work space is narrow, such as a downtown section where the explosive blasting work is not possible and the roadside where the houses are crowded. The present invention relates to a small diameter vertical shaft drilling rig for construction of small vertical shafts.

In general, the non-removable horizontal tunnel excavation method is a method of working to form a tunnel connecting two vertical shafts after excavating two vertical shafts at regular intervals.

The non-adhesive horizontal tunnel formed in this way was divided into underground passages, electric lines or communication lines, and gas pipelines according to their size.

In this case, since the electric line, communication line, gas pipelines, etc. are horizontal tunnels for embedding electric lines, communication lines, gas pipes, etc., which are directly connected to everyday homes, they are mainly used in residential areas and in areas of dense residential areas such as roadsides adjacent thereto. Formed.

Therefore, the vertical pit excavation work performed before the excavation of the non-mounted horizontal tunnel which forms an electric line, a communication line and a gas pipeline as described above is also performed in a crowded residential area.

Conventional excavators for drilling such vertical shafts are used by installing excavators vertically in fork cranes or cranes, and also because the fork cranes or cranes must be moved, the working radius must be maintained at least 10 square meters, and also the vertical shaft depth In this case, the forklift or crane should be installed in the vertical shaft so that the width of the vertical shaft became more than 10 square meters.

In general, however, the working radius is not 10 square meters in many places in the housing dense area. Therefore, in the dense dwelling area where the work place is narrow, the vertical shaft is excavated by the manpower using personal equipment. And there was a problem that takes a lot of work expenses.

Therefore, the present invention has been devised in view of such a problem, and a small diameter vertical shaft drilling apparatus for constructing a vertical shaft having a deep depth and a small diameter on a roadside where a small excavation work site is narrow and where gunpowder blasting cannot be carried out is concentrated in a downtown section or houses. To provide.

In order to achieve the above object, the present invention provides a power unit and a power unit having a power generator and a pneumatic and hydraulic device, and a table on which the device chamber is mounted on an upper surface, and a plurality of upper ends of which are fixed to a lower surface of the table. A jack for supporting the table, a first main horizontal boom body and a second main horizontal boom body of fixed length fixedly mounted to the left and right sides of the table, and the left and right sides of the first and second main horizontal boom bodies A plurality of longitudinal horizontal boom bodies inserted into both ends and having support pieces attached to respective protruding ends, and installed in the longitudinal horizontal boom bodies and the first and second main horizontal boom bodies, respectively, of the first and second main horizontal boom bodies; Horizontal boom body extension means for entering the vertical and horizontal boom body at both ends, and a fixed length rack gear is fixed to the center of the outer upper surface of the first and second main horizontal boom body in the left and right length direction, and 1st and 2nd main horizontal boom body Auxiliary channel is fixed to the outer surface of each longitudinal horizontal boom body pulled out a certain length and the auxiliary rack gear is fixedly mounted so as to be continuous with the rack gear on the outer upper surface thereof, and installed on one outer surface so that the excavator is lifted up and down A vertical vertical boom body of a predetermined length, a vertical vertical boom body of a predetermined length inserted and inserted into the lower end of the main vertical boom body and having a support piece attached thereto, and a lower vertical portion of the vertical vertical boom body. Jacks for vertical boom body expansion and contraction, both ends of which are fixed on the outer side of the main vertical boom body and the vertical vertical boom body in the up / down length direction so that the main vertical boom body is pulled in and out from the bottom of the body, and the horizontal and vertical movement of the main vertical boom body horizontally and vertically. It provides a small diameter vertical rig drilling device consisting of a fastening portion for connecting to the first and second main horizontal boom body to rotate in the left and right directions.

Figure 1 is a plan view showing a small diameter vertical rig drilling apparatus of the present invention.

2 is a cross-sectional view taken along line AA ′ of FIG. 1.

3 is a cross-sectional view taken along line BB ′ of FIG. 1.

Figure 4 is a side view showing a coupling state of the main horizontal boom body and the main vertical boom body according to the present invention.

Figure 5 is a perspective view of the channel member and the auxiliary rack gear according to the present invention.

6 is a perspective view of a slide member according to the present invention.

7 is a perspective view showing a main vertical boom body rotating means according to the present invention.

8 is a simplified view showing a state in which the subject innovation is installed in the vertical shaft.

Figure 9 is a simplified view showing the excavation of the bottom surface of the vertical shaft to a predetermined depth by horizontally moving the main vertical boom body according to the present invention.

10 is a simplified view showing the excavation of the bottom surface of the vertical shaft to a predetermined depth by rotating the main vertical boom body in the front, rear, left and right directions according to the present invention.

Figure 11 is a simplified view showing the excavation of the front and rear and left and right sides of the vertical shaft by rotating the main vertical boom body according to the present invention.

Figure 12 is a simplified view showing a state of discharging soil and rock in the vertical shaft according to the operation of the present invention.

*** Detailed description of symbols for important parts of the drawings ***

1: Device room 2: Table

3: Table support jack (JACK) 4: 1st main horizontal boom body (BOOM BODY)

4a, 4b, 5a, 5b: vertical horizontal boom body 5: second main horizontal boom body

6, 7: Double Acting Hydraulic Cylinder (CYLINDER)

6a, 6b, 7a, 7b: Piston Load

8: Main vertical boom body 8a: Vertical vertical boom body

9: excavator 10: slide member

11: through air 12: auxiliary channel

13a: vertical boom body expansion jack 13b: vertical boom body front and rear rotation fixing jack

14 DC motor 15: rack gear

15a: Auxiliary rack gear 16: Pinion gear

17: 1st plate 17a, 18a: connecting ring

18: intermediate member 19a: fastening groove

19b: fastener 20: second plate

21: fastening bolt 22: shaft pin

Referring to Figures 1,2,3,4,5,6,7,8,9,10,11,12 attached to the configuration and the embodiment of the present invention in detail as follows.

Figure 1 is a plan view showing a small-segment well vertical rig drilling device of the present invention, Figure 2 is a cross-sectional view AA 'of Figure 1, Figure 3 is a cross-sectional view BB' of Figure 1, Figure 4 is the main horizontal boom body according to the present invention and Figure 5 is a side view showing a coupling state of the main vertical boom body, Figure 5 is a perspective view showing a chanel member and an auxiliary rack gear according to the present invention, Figure 6 is a perspective view of a slide member according to the present invention, Figure 7 according to the present invention Figure 8 is a perspective view showing the main vertical boom body rotation means, Figure 8 is a simplified view showing a state in which the subject innovation is installed in the vertical shaft, Figure 9 is to move the main vertical boom body horizontally from side to side in accordance with the subject innovation to the bottom surface of the vertical shaft Figure 10 is a simplified view showing the excavation to a certain depth, Figure 10 is a simplified view showing the excavation of the bottom surface of the vertical shaft to a predetermined depth by rotating the main vertical boom body in the front, rear, left and right directions, Figure 1 1 is a simplified view showing the excavation of the front and rear and left and right sides of the vertical shaft by rotating the main vertical boom body according to the present invention, Figure 12 is a simplified view showing a state of discharging soil and rock in the vertical shaft according to the work of the present invention to be.

The present invention, as shown in Figures 1, 2, 3, 4, 5, 6, 7, attached to the power unit (1) and the power unit chamber and a pneumatic and hydraulic device built-in, Table 2 mounted on the surface, a number of jacks (3) for supporting the machine the upper end is fixed to the lower surface of the table (2), and horizontally on the left and right sides of the table (2) Fixed lengths of the first and second main horizontal boom body (4,5) and the left and right ends of the first and second main horizontal boom body (4,5) of fixed length are respectively inserted into the supporting piece A plurality of vertical horizontal boom bodies 4a, 4b, 5a, 5b to which (4c, 4c, 5c, 5c) are attached, the vertical horizontal boom bodies 4a, 4b, 5a, 5b, and first and second notes. Horizontal boom body extension means which is installed in the horizontal boom bodies 4 and 5 and enters the vertical and horizontal boom bodies 4a, 4b, 5a, and 5b to both ends of the first and second main horizontal boom bodies 4 and 5, respectively. And fixed in the left / right length direction at a central portion of the outer upper surface of the first and second main horizontal boom bodies 4 and 5. On the outer surface of the fixed length of the rack gear 15, and each of the longitudinal horizontal boom body (4a, 4b, 5a, 5b) drawn out of the predetermined length from the first and second main horizontal boom body (4, 5) Auxiliary channel 12, which is fixed and mounted on the outer upper surface of the auxiliary rack gear 15 'to be continuous with the rack size gear 15, and a predetermined length installed on one outer surface so that the excavator 9 is raised and lowered up and down The vertical vertical boom 8 and the vertical vertical boom of a predetermined length are inserted so that a predetermined length is input and output to the lower end of the main vertical boom body 8 and the support pieces 4c, 4c, 5c, and 5c are attached to the lower end thereof. The outer side of the main vertical boom body 8 and the longitudinal vertical boom body 8a to draw in and pull out the body 8a and the lower end of the longitudinal vertical boom body 8a to the lower end of the main vertical boom body 8. Vertical boom body shaft jack 13a fixed at both ends in the up / down length direction, and the main vertical boom body 8 to be moved horizontally in the horizontal direction and in the up, down, left and right directions. Is constituted by connecting the fastening pyeongbum body (4, 5).

The fastening part is attached to the left and right sides of the table 2 and is arranged on the outer surfaces of the first and second horizontal boom bodies 4 and 5 on which the rack size gears 15 are mounted, and slides in the left and right directions. The slide member 10 is formed to protrude and form a central portion of one surface in a horizontal direction so that the rack gear 15 is inserted and a through hole 11 is formed on the upper surface thereof, and an outer surface of the upper surface of the slide member 10. A DC drive motor 14 fixed to the pinion gear 16 arranged on the rotating shaft of the DC drive motor 14 and meshed with the rack gear 15 through the through hole 11, and the slide member 10; And a main vertical boom body pivoting means for connecting the main vertical boom body 8 to the main vertical boom body 8 so as to rotate back and forth within a predetermined angle, and the upper end hinged to the main vertical boom body 8. The hinge is coupled to the lower end to the slide member 10, the main together with the main boom body rotation means It made jikbum the body 8 in a vertical boom body rotated around a fixed jack (13b) for the turning and fixed to a predetermined front and rear angle.

The horizontal boom body expansion means includes a double acting first hydraulic cylinder (6) and a second hydraulic cylinder (7) installed in the first and second main horizontal boom body (4), (5), and the first and second Piston rods 6a and 6b having a predetermined length to be drawn out to the left and right ends of the second hydraulic cylinders 6 and 7, and the protruding end of which is fixed inside the front end of each of the longitudinal horizontal boom bodies 4a, 4b, 5a and 5b. , 7a, 7b).

The main vertical boom body rotating means is attached to the main vertical boom body 8 by a welding method, and the first plate member 17 having a plurality of connecting rings 17a formed at regular intervals in a horizontal direction at the center of the rear surface. In addition, a plurality of connection rings 18a interlocked in a horizontal direction with a plurality of connection rings 17a formed on the rear surface of the first plate 17 are formed in the front part, and a plurality of coupling grooves 19a in the inner diameter part in the rear part. The intermediate member 18 formed on the same circumference and a plurality of fastening holes 19b are formed on the same circumference so as to correspond to the fastening holes 19b formed on the intermediate member 18. A shaft pin 22 for axially coupling the connecting plate (17a, 18a) of the second plate 20, the first plate 17 and the intermediate member 18 is joined by a welding method, and the fastening groove (19a) Is fastened to the fastening hole (19b) consists of a fastening bolt 21 for coupling the intermediate member 18 and the second plate 20.

An inner diameter of the fastening groove 19a and the fastening hole 19b forms a screw thread so that one end of the fastening bolt 21 to be inserted is screwed together.

The table support jack (3) and the vertical boom body telescopic jack (13a) and the vertical boom body front and rear rotation position fixing jack (13a) is a screw jack using a screw, a rack driving jack using a rack, a hydraulic jack using hydraulic pressure It is preferably used selectively.

The lower end of the vertical boom body front and rear rotation fixing jack 13b is hinged to the slide member 10 so as to rotate in the left and right directions.

The excavator (9) is an excavation device (application number: 20-2002-0008292) filed by the applicant of the present applicant, when the front end driving head (9a) at the bottom of the ground excavation, the intermediate screw transfer means transfers the excavated soil and gravel It is an excavator to discharge to the upper end, and is driven by receiving power from the pneumatic generator and the generator of the apparatus room (1).

The double-acting hydraulic cylinders 6 and 7 are operated by receiving hydraulic power from the hydraulic generator of the apparatus chamber 1.

The DC driving motor 14 is operated by receiving driving power from the power generator of the apparatus room 1.

Referring to Figures 8, 9, 10, 11, 12 attached to the operation of the present invention and the excavation work according to this configuration is as follows.

First, as shown in Figure 8 using a forklift or manpower not shown to excavate the vertical shaft 30 of the small diameter to some depth from the ground, and then the vertical shaft drilling device according to the present invention to the vertical shaft 30 Install securely.

In more detail, the piston rods 6a, 6b, 7a, and 7b are moved outwardly from the left and right ends of the first and second hydraulic cylinders 6 and 7 by the hydraulic power of the hydraulic generator of the apparatus chamber 1, respectively. Is extended along the respective piston rods 6a, 6b, 7a, and 7b to the outside of the left and right ends of the first and second main horizontal boom bodies 4 and 5, respectively. Longitudinal horizontal boom bodies 4a, 4b, 5a, and 5b are extended so that the respective supporting pieces 4c, 4d, 5c, and 5d attached to the protruding ends of the longitudinal horizontal boom bodies 4a, 4b, 5a and 5b. It is in close contact with the left and right wall surfaces or the front and rear wall surfaces of the vertical shaft 30.

At this time, the outer surface of the vertical horizontal boom body (4a, 4b, 5a, 5b) protruding from the left and right ends of the first and second main horizontal boom body (4, 5) rack rack 15 and the auxiliary rack gear ( The auxiliary channel 12 is laid out so that 15 ') is continuous.

Then, the table supporting jacks 3 support the table 2 horizontally at a predetermined height from the bottom of the vertical shaft, and each vertical boom body extension jack 13a is extended to operate each vertical boom body 8a. Each main vertical boom body 8 is supported vertically with respect to the bottom surface 31 of the vertical shaft 30 by making the lower end of the vertical shaft 30 closely contact the bottom surface 31 of the vertical shaft 30.

At this time, since the bottom surface 31 of the vertical shaft 30 is generally formed as an uneven surface, the bottom surface 31 of the vertical shaft 30 by individually adjusting the height of the table support jack (3). The table 2 is horizontally supported at a predetermined height relative to each other, and the vertical and vertical boom bodies 8a are drawn in and taken out from the main vertical boom body 8 using the vertical boom body extension jacks 13a, respectively. It is operated individually and installed in the vertical vertical boom body 8a and the main vertical boom body 8 and the main vertical boom body 8 perpendicular to the bottom surface 31 of the vertical shaft 30.

Thereafter, as shown in FIG. 9, the plurality of excavators 9 are lowered along each of the main vertical boom bodies 8 to excavate a portion of the vertical shaft bottom surface to a predetermined depth, and then lift up and down again. The vertical shaft is transported from side to side along the auxiliary channel 12 arranged on the first and second main horizontal boom bodies 4 and 5 and the vertical horizontal boom bodies 4a, 4b, 5a, and 5b as in F ". (30) Part of the bottom surface 31 is primarily excavated to a certain depth.

At this time, the left and right movement of the main vertical boom body (8) to operate the DC drive motor 14, the rack gear (15) and the auxiliary rack gear (15 ') in which the pinion gear (16) arranged on the rotating shaft is engaged. By moving along.

In more detail, as shown in FIGS. 1, 3, and 4, the slide member 10 having the DC driving motor 14 fixed to the upper surface of the slide member 10 is partially installed through the through hole 11 and the auxiliary rack. First and second main horizontal boom bodies 4 and 5 equipped with the rack gear 15 and the auxiliary rack gear 15 'according to the rotational direction of the pinion gear 16 engaged with the gear 15'; It slides left and right along the auxiliary channel.

Accordingly, the main vertical boom body 8 indirectly coupled through the slide member 10 and the main vertical boom body pivoting means is left and right along the first and second main horizontal boom bodies 4 and 5 and the auxiliary channel. In the direction of movement, vertical longitudinal boom body (8a) and the excavator (9) is slid left and right accordingly.

And the unexcavated portion of the bottom surface 31 which is not excavated by the primary excavation work by the excavator 9 rotates the main vertical boom body 8 at a predetermined angle in the left and right directions as shown in FIG. 10. In one state, the excavator is excavated (9).

At this time, the left and right front and rear rotation of the main vertical boom body (8) is made by the operation operation of the main vertical boom body rotating means, which will be described in detail with reference to Figures 2, 3 and 7.

First, referring to the forward and backward rotation operation of the main vertical boom body pivoting means, while the main vertical boom body 8 is made vertical, both ends of the main vertical boom body 8 and the slide member 10 are hinged and fixed. When the vertical boom body fore and aft rotation jack 13b is elongated, the coupling ring 17a of the first plate 17 and the coupling ring 18a of the intermediate plate 18 are axially coupled in proportion to the extension length. The upper portion of the main vertical boom body 8 around the shaft pin 22 is rotated at an angle to the front and the lower portion to the rear and is fixed at that position.

Further, when the vertical boom body forward and backward rotation jack 13b is reduced by a certain length, the upper portion of the main vertical boom body 8 is rearward and the lower portion is forward in the center of the shaft pin 22 in proportion to the reduction length. When a certain angle is rotated, it is fixed at that position.

And when looking at the left and right rotational operation of the main vertical boom body rotation means first in the state in which the main vertical boom body (8) vertically, first separating the intermediate plate 18 from the second plate 20, and then the intermediate The plate 18 is rotated clockwise and counterclockwise by a desired angle.

At this time, the fastening groove 19a of the intermediate plate 18 is positioned on the same horizontal axis as the predetermined fastening hole 19b among the plurality of fastening holes 19b formed in the second plate 20 at the position. By screwing one end of the fastening bolt 21 into the fastening groove 19a and the fastening hole 19b, the intermediate plate 18 and the second plate 20 are coupled in a bolted joint manner.

Thus, the main vertical boom body 8 coupled to the first plate 17 by the vertical boom body rotating means rotated in the left and right directions is the shaft pin 22, the intermediate plate 18 and the second plate 20 It rotates a certain angle in the front, rear, left and right directions.

Therefore, the excavator 9 which is rotated at a predetermined angle in the front, rear, left and right directions along the main vertical boom body 8 rotated by the vertical boom body rotating means has a bottom surface 31 of the vertical shaft 30 as shown in FIG. The main vertical boom body 8 in the vertical state is rotated in a forward and backward direction at an angle as shown by the arrow " G " Lowering the excavator 9 mounted on the boom body 8 to excavate the unexcavated portion of the unexcavated bottom surface 31 in the working manner shown in FIG. Will be excavated.

As described above, the entire bottom surface 31 of the vertical shaft 30 is excavated to a predetermined depth so that the front, rear, left, and right sides of the newly formed bottom surface 32 are equal to the inlet width of the vertical shaft 30. As shown in FIG. 9, the excavator 9 is rotated and excavated at a predetermined inclination angle.

At this time, it is well known that the pivoting operation of the excavator 9 is performed by the pivoting operation of the main vertical boom body 8.

In addition, as described above, when excavating the bottom surfaces 31 and 32, the lower end of the table support jack 3 is adjusted in a state spaced at a predetermined height from the bottom surfaces 31 and 32, and the vertical shaft 30 A first including the support pieces 4c, 4d, 5c, 5d and the piston rods 6a, 6b, 7a, 7b and hydraulic cylinders 6, 7 supported by hydraulic forces on the front, rear, left and right sides of the And a second main horizontal boom body 4, 5 and a plurality of longitudinal horizontal boom bodies 4a, 4b, 5a, 5b.

And the soil and rock fragments of the bottom surface (31,32) excavated by the excavator (9) is a basket (41) connected in line with the structure (40) installed at a certain height at the inlet of the vertical shaft as shown in FIG. Discharge to the outside using.

Thereafter, the lower end of the jack for supporting the table 3 is lowered to the newly formed bottom surface 32, and the respective supporting pieces 4c, by the operation of the first and second hydraulic cylinders 6 and 7, 4d, 5c, and 5d are spaced apart from the front, rear, left, and right sides of the vertical shaft 30 by a predetermined length, and then the table support jack 3 is stretched and contracted again. 2) lowering the height by the length thereof to support it horizontally, and then again attaching the support pieces 4c, 4d, 5c, and 5d to the front, rear, left, and right sides of the vertical shaft 30 in the horizontal direction, as shown in FIG. After installation, the newly formed bottom surface 32 is reexcavated to a predetermined depth.

As described above, the present invention is deep in the area without removing the surrounding structure or disturbing the traffic flow in the narrow area of the city or the narrow roadside and excavation work site where the explosive work cannot be performed. It is effective to construct a vertical shaft with a small diameter.

Claims (7)

A power unit with a power generator and a pneumatic and hydraulic device, A table on which the apparatus chamber is mounted on an upper surface; A plurality of table support jacks having an upper end fixed to a lower surface of the table; A first main horizontal boom body and a second main horizontal boom body of fixed length fixedly mounted in a horizontal direction on the left and right sides of the table; A plurality of longitudinal horizontal boom bodies inserted into the left and right ends of the first and second main horizontal boom bodies and having a support piece attached to each protruding end thereof; Horizontal boom body extension means which is installed in the longitudinal horizontal boom body and the first and second main horizontal boom bodies and enters the longitudinal horizontal boom body into both ends of the first and second main horizontal boom bodies; A rack gear having a predetermined length fixedly installed in a left / right length direction at a central portion of an outer upper surface of the first and second main horizontal boom bodies; An auxiliary channel fixed to the outer surface of each longitudinal horizontal boom body drawn out a predetermined length from the first and second main horizontal boom bodies and fixedly mounted to the outer upper surface thereof so that the auxiliary rack gears are fixed to the continuous upper gears; A main vertical boom body of a certain length installed on one side of the excavator so that the excavator is moved up and down, And vertical longitudinal boom body of a certain length is inserted so that the predetermined length is entered and exited to the lower end of the main vertical boom body, and the support piece is attached to the lower end, Jacks for vertical boom body expansion and contraction is fixed to both ends in the vertical / vertical direction on the outer surface of the main vertical boom body and the vertical vertical boom body to draw and withdraw the lower end of the vertical boom body to the bottom of the main vertical boom body, Small diameter vertical shaft excavation device comprising a fastening part for connecting the main vertical boom body to the first and second main horizontal boom body to rotate horizontally and horizontally and vertically and horizontally. The method of claim 1, The horizontal boom body expansion means includes a double acting first hydraulic cylinder and a second hydraulic cylinder which is built in the first and second main horizontal boom body; A small diameter vertical shaft excavation device, characterized in that the piston rod is fixed to the left and right ends of each of the first and second hydraulic cylinders and the protrusion is fixed to the inside of the front end of each longitudinal boom body. The method of claim 1, The fastening part is attached to the left and right sides of the table and is fixed to the outer surfaces of the first and second horizontal boom bodies on which the rack size gears are mounted, and slides in the left and right directions so that the rack gears can be inserted. And a slide member protruding in the left and right length direction and having a through hole formed thereon, A DC driving motor fixed to an outer surface of the upper surface of the slide member; A pinion gear installed on the rotating shaft of the DC driving motor and engaged with the rack gear through a through hole; A main vertical boom body pivoting means for connecting the slide member and the main vertical boom body to allow the main vertical boom body to rotate back and forth in a predetermined angle; The upper vertical hinge is coupled to the main vertical boom body and the lower end is hinged to the slide member as a vertical boom body front and rear rotation fixing jack for rotating and fixing the main vertical boom body at a predetermined front and rear angle with the main vertical boom body pivoting means. Small diameter vertical rigs, characterized in that made. The method of claim 1, The table support jack and the vertical boom body expansion jack is a small diameter vertical shaft excavation device, characterized in that it is selectively used from a screw jack using a screw, a rack driving jack using a rack, a hydraulic jack using a hydraulic pressure. The method of claim 3, wherein The main vertical boom body rotating means is a first plate member having a front surface attached to the main vertical boom body by a welding method and having a plurality of connecting rings at a predetermined interval in the horizontal direction at the center of the rear surface; An intermediate member having a plurality of connection rings formed in a horizontal direction with a plurality of connection rings formed on a rear surface of the first plate, and having a plurality of coupling grooves formed on the same circumference at an inner diameter at a rear surface thereof; A second plate member having a plurality of fastening holes formed on the same circumference so as to correspond to the fastening holes formed in the intermediate member, and joined to the slide member by welding; A shaft pin for axially coupling the connecting ring of the first plate and the intermediate member, Small diameter vertical shaft excavation device is fastened to the fastening groove and the fastening hole consisting of a fastening bolt for coupling the intermediate member and the second plate. The method of claim 3, wherein The vertical boom body front and rear rotational position fixing jack is selectively used among a screw jack using a screw, a rack driving jack using a rack, a hydraulic jack using hydraulic pressure, the lower end is hinged to the slide member 10 to be rotated in the left and right directions. Small diameter vertical diggers, characterized in that. The method of claim 5, Small diameter vertical shaft excavation device, characterized in that for forming the screw thread so that the screw portion of the fastening bolt is inserted into the inner diameter of the fastening groove and the fastening hole.