KR0134073B1 - Earth auger apparatus and concrete pile making method in the underground - Google Patents

Abstract

The present invention relates to a vibration-free pile laying device and method using a ground excavator to be buried in the ground in order to build a variety of buildings, the present invention is a casing O is mounted on the Oga drive unit of the ground excavator Consists of double skews formed with two rows of screw wings attached to the outer periphery of the pipe, and the supply pipe for supplying sen wind (compressed air) or cement paste or bento annealing is provided on both sides of the double screw, or at the bottom end. When excavating the ground, the Oga head is installed in the casing oga assembled in the housing. When the ground is excavated, the crusher of the compressor is supplied to the supply pipe, and the soil dug into the double head by the earth output of the sen wind. The pile ball is excavated in a manner that allows the process to proceed. After the pile ball excavation, the casing When the concrete pile is inserted into the study and the casing is turned upside down, the cement pile or bentonite pool is supplied to fill the pile hole so that the pile laying process can be carried out without vibration. .

Description

Vibration-free pile laying device and method using ground excavator

1 is an installation configuration diagram of a file embedding apparatus for explaining the present invention.

Figure 2 is an exploded perspective view of the casing Ogawa Oga head of the pile embedding apparatus of the present invention.

3 is an assembled cross-sectional view of the casing Ogawa Oga head of the pile embedding apparatus of the present invention.

(A) (b) is an exploded perspective view and a bottom view of an oga head which is an essential part of the present invention.

Figure 5 (a) (b) (c) is an operating state diagram showing the process of excavating the pile hole with the pile embedding apparatus of the present invention.

(A), (b), and (d) of FIG. 6 are process charts for embedding piles in pile holes excavated by the pile embedding apparatus of the present invention.

* Destruction of Symbols for Major Parts of Drawings *

1: crawler driving device 2: support arm,

3: delivery device, 4: backstay,

5: pulley, 6: organ drive unit,

10: casing oga, 11: oga head,

12a, 12b: supply pipe, 13: connection groove,

14: connecting protrusion, 15: assembly cylinder,

16: binding plate, 17: opening and closing,

18: hinge, 19: round tip,

20: pile ball, 21: concrete pile,

22: cement paste or bentonite paste.

The present invention relates to a vibration-free pile laying device and method using a ground excavator that can be buried in the ground in order to build a variety of buildings, the present invention relates to an Oga drive unit of a ground excavator It consists of a double screw with two rows of screw blades attached spirally to the outer circumference of the casing auger settled in the Auger Drive Unit, and the sen wind (compressed air) or cement paste or bentonite on both sides of the double screw. The supply pipe to supply Bentonite, etc. is installed, and the casing Oga, which is assembled at the bottom, is equipped with an Oga head. When excavation of pile ball is carried out by moving to double screw by earth output After drilling the pile hole, the pile laying process can be carried out without vibration by inserting the concrete pile into the hollow part of the casing oga.The oga head settled in the lowermost casing oga can be achieved. The tip of the tip remains in the pile and at the same time the tip of the oga head is wider than the outer diameter of the concrete pile so that the concrete pile can be embedded in the pile and the casing Ogawa oga head can be recovered. At the same time, each casing oil is excreted on both sides, and the supply pipe is connected with cement paste or bentonite to fill the space where the casing oil escapes. In a way that allows it to be buried straight To the invention it aims to allow an embedded file concrete.

In the past, as a method of embedding concrete or steel piles into the ground, a batting method using a heavy hammer has been used. Such a batting method generates a large vibration in the ground when the pile is hit as a hammer. If there is an underground or ground structure around the construction site, there was a drawback that causes a lot of damage to the surrounding structures, and the pile drill method using the ground excavator is adopted as a fear to solve this problem.

However, the above-mentioned pile drilling method is a method of laying concrete piles in an existing ground excavator by mounting an oga and then laying concrete piles in the drilled pile. However, this is a conventional OGA device, when the pile hole is excavated, the OGA is completely removed from the ground, and when the pile is inserted, the existing pile hole often collapses, so the pile cannot be buried or straightened. There was a defect of the occurrence of the defect becoming impossible.

Therefore, the present invention was created with the object of providing a construction method that can bury the conventional defects as described above and further bury the file more efficiently, while laying the file more firmly. It consists of so-called double screw that consists of two rows of screw blades to make the excavation work of excavated soil well. Especially, the Oga head is specially improved so that when the concrete pile is inserted into the pile hole, The head main body is able to recover and supply grouting agent such as cement paste or bentonite to the periphery of the inserted pile, filling the space formed between the inserted pile and pile hole, and grouting pile pile ground layer. In addition to being buried correctly, firmly buried ground The present invention will be described below in detail with reference to the accompanying drawings of the present invention.

1 is a side configuration diagram of a ground excavator for explaining the present invention, the guide device (3) is attached to the support arm (2) of the crawler driving device (1) consisting of a wheeled door and a swinging structure with a cab In addition, the upper side of the delivery device is attached to the backstay (4) is provided to maintain the standing state. In the upper portion of the delivery device (3) it is possible to lift and operate the Oga drive unit (6) in the pulley (5) configuration in which the wire cable is extended.

The organo drive unit 6 is provided with a skirt tube (not shown) that can be coupled to the casing organ, where the skirt tube is configured to rotate by receiving the driving force of the organo drive unit in a moderately decelerated state.

2 to 4 is a view showing the configuration of the casing Oga 10 and the Oga head 11, which is the main device of the present invention, the casing Oga 10 of the present invention is a screw arranged in a spiral on the outer peripheral surface of the two lines The screw blades 10a and 10b are composed of double screws wound at the same pitch, and two supply pipes 12a and 12b penetrate two rows of screw blades 10a and 10b on both sides of the double screw. Assembled in a state, the casing O is formed symmetrically in the connecting groove 13 on the upper end of the cylindrical body of 10, the lower end has an outer diameter that is inserted into the inner diameter of the upper end is fitted in the connecting groove (13). The connecting protrusions 14 protrude symmetrically.

In addition, the casing oga, which is assembled at the lowermost side of the casing oga 10, is welded and fixed to the assembling cylindrical body 15 for assembling the oge head 11, and a plurality of binding grooves ( 15a) is spaced at equal intervals and wrapped with the reinforcing ring frame 15b, and a binding hole 15c for assembling the binding plate 16 at any position is symmetrically drilled.

In addition, the oracle head 11 inserted and assembled into the assembling cylindrical body 15 of the lowermost casing 10 is provided with binding protrusions 11a to be fixed to the binding grooves 15a at equal intervals. The inlet ring frame 11b to which the binding plate 16 assembled by the hole 15a is coupled is formed, and each of the openings and openings 17 divided into three pieces is hinged at the lower periphery of the oga head 11. The opening and closing holes 17 are assembled in a conical shape like a drill chuck in a drill tool so that they can be opened outward from the hinge 18. Conical tip 19 is assembled at the vertex under the state that the opening and closing holes 17 divided into pieces are assembled in a conical form.

Coupling protrusions 17a protrude one by one at the vertices of each opening and closing hole 17, and coupling grooves 19a are formed at three equal intervals on the periphery of the circular tip 19, and the coupling grooves have insertion ends. It is formed in an open L-shape to facilitate the insertion of the engaging projection 17a and then to be bound during forward rotation operation, while in the reverse rotation operation, the binding projections 17a are pulled out of the coupling recess 19a. It was configured to come out.

In addition, each of the opening and closing holes 17 is formed with an excavation protrusion 17b for digging the ground layer and a spiral protrusion 17c for moving the excavated soil upward, and three digging protrusions 19b for the conical tip 19. )

Referring to the present invention having the configuration of the casing Ogawa Oga head as described above will be described the process of drilling the pile hole in the ground and the process of embedding the pile.

First, the uppermost casing organ is attached to the skirt tube of the organ drive unit 6, which is a driving device of the ground excavation device, and then several casing organs 10 are attached and assembled to the lower side thereof. The method may be fitted to the connecting protrusions 14 protruding from the lower end of the upper casing oh 10 to be assembled to the connecting groove 13 formed on the top. At this time, since the connecting groove 13 is formed in a ㅗ shape, it is easy to insert the connecting protrusion 14, and after the insertion, the casing cucumber 10 is assembled at the lower side by slightly rotating in the forward rotation direction of the casing 10. The upper casing is maintained in the assembled state, and the assembly cylinder 15 is formed integrally with the lower end of the lowermost casing is assembled in close proximity to the ground coupled to the organ head 11, the assembly cylinder 15 When the binding protrusion piece (11a) is pinched in the coupling groove (15a) of the) and then the binding plate (16), which is assembled through the binding hole (15c) is inserted into the inlet ring (11b) of the oga head (11) Oga head It is assembled by the binding plate 16 which is in close contact with the outer surface side of the concave inlet ring (11b) without the separation phenomenon as the upper and lower side, and can receive the rotational operation force as it is by combining the binding groove (15a) and the binding stone piece (11a). It is in a state.

The inside of the OGA drive unit 6 is connected with a supply device 12a, 12b provided on both sides of the upper casing Oga to a Swivel device (not shown) to compress compressed air of a compressor or cement pool or bentonite pool. It was designed to be pressurized. The shovel device is configured to supply compressed air or cement paste or bentonite paste even if the feed pipes 12a and 12b rotate together with the casing oil. It is connected to prevent leakage.

Assembling a plurality of casing organo in the organo drive unit 6 by the assembly method as described above, and then drives the organo drive unit 6 and supplies the compressed air of the compressor to the supply pipe (12a) (12b) through the simultaneous shovel device When the casing oga is slowly lowered, the orga head 11 begins to excavate the ground (see also Fig. 5). The three oga heads 11 attached to the lowermost casing oga are assembled in a circular shape. Excavation protrusions (17b) and (19b) protruding in the opening and closing hole (17) and the conical tip (19) of the worms are dug up and the spiral projections (17c) through the action to push up the excavated soil upwards, At this time, since compressed air is blown into the supply pipes (12a) and (12b) at high pressure, the excavated soil moves quickly toward the screw blades (10a) and (10b) in response to the blown-out compressed air after hitting the insect. By head 11 The excavated soil has the effect of preventing the case of hindering the rotational excavation of the oga head, and thus the digging force of the oga head is improved, and the screw formed on the outer circumferential surface of the casing oga 10 has two lines. Since the screw blades 10a and 10b are spirally attached together at the same pitch, two rows of screw blades can simultaneously transport soil. This has the effect of transferring more than conventional single-row screw blades. (See also 'A' and 'B' in Figure 5.)

On the other hand, when the casing organ (10) first assembled in the organ drive unit (6) is inserted into the ground to some extent, the top casing organ is separated by separating the uppermost casing organ and the lower casing organ and then raising the organ drive unit. Ascendingly move the new casing oga between the top and the bottom of the way to assemble the casing oga repeatedly to excavate the pile hole 20 of the desired depth.

After excavating the pile hole to a predetermined depth by the above excavation operation, the casing organ (10) is inserted into the pile hole and the top casing organ is dismantled from the organ drive unit (or the top casing organ and then). When the end of the concrete pile 21 is inserted into the casing Oga 10 by using a crane as shown in FIG. 6A and 6A, the lower end of the concrete pile opens and closes the opening 17 of the oga head 11. And the conical tip 19 is in contact with the inner surface. In such a state, the casing OGA 10 of the uppermost stage is coupled to the OGA drive unit 6, and assembled, and then the OGA drive unit is reversed to recover the casing Ogawa OGA head.

Referring to the process of recovering the casing Ogawa Ogawa head as described above, of the circular tip 19 coupled to the engaging projection 17a of the vertex of the opening and closing 17 assembled into the hinge 18 in a conical shape to the Oga head 11 Coupling groove (19a) can be maintained in the binding state when the Oga drive unit is in the forward rotation operation, while in the reverse rotation operation is configured so that the coupling groove (19a) from the engaging projection (17a) to the Oga drive unit When the reverse rotation operation, each casing oga 10 is not separated, whereas the conical tip 19 of the orga head is separated from the engaging projection 17a of the opening and closing 17, and the conical tip 19 is released The openings 17 fastened in a conical form by the weight of the concrete pile 21 are opened outwardly from the hinge 18 (see also 'I' in Fig. 6).

Therefore, each circular opening 19 is pushed to the lower end of the concrete pile and left in the pile hole, and the opening 17 moves outward with the casing Oga on the outer circumference of the concrete pile. Since the supply of compressed air is stopped and the cement pool or the bentonite pool is started, the bentonite pool or the cement pool 22 is ejected into the supply pipes 12a and 12b provided on both sides of the casing oil. Therefore, the conical tip 19, which is pressed down at the lower end of the concrete pile 21, is cement cement 22 is injected into the bottom of the opening 17 which is opened outward, so that the cement from around the lower side of the concrete pile 21 It is filled by the pool (see also 'I' in FIG. 6), and the cement pool 22 is continuously injected with the reverse rotation of the casing oil 10, thereby filling the space where the casing oil has escaped. The concrete pile 21 inserted into the standing pile hole 20 is to maintain the casing oh straight inserted into the state (see also 'C' of FIG. 6), the casing oh (10) to the pile hole (20) In the state that is completely removed from the state, as shown in (d) of FIG. 6, the pile hole 20 is completely filled by the concrete pile 21 and the cement paste 22, so that the concrete pile can be kept straight. Of course Not only is it possible to prevent the collapse of the surrounding layers of the pile hole 20, but the cement paste hardens as it penetrates around the pile hole, thereby hardening the surrounding layers in which the concrete pile is embedded, thereby further enhancing the effect of the laying of the concrete pile. .

In the present invention, the screw attached to the outer circumferential surface of the casing oga is attached to the screw pitch of two rows at the same pitch so that the beto action of the soil excavated during the forward rotation of the casing oga is doubled and the double screw of the casing oga Soil excavated by the supply pipe installed in the air flows upwards by the ejection pressure of compressed air, so that the excavation work can be expected quickly. This brings about the smoothness of excavation work. It has the effect of reducing the excavation work time of the pile ball, and divides the opening and closing of the conical shape into three parts and attaches them with hinges and opens them outwards. At the same time with three openings in a conical shape The conical tip, which was held in the shape of a cone, was separated so that the opening and closing door could be opened so that the concrete pile inserted into the casing could be embedded in the pile hole. The bentonite pool or the mint pool is supplied to the supply pipe so that the bentonite pool or the cement pool fills the space where the casing oga has escaped. The concrete pile inserted in the pile hole completely prevents the case of the pile hole collapsing when the casing oga moves upward. In order to bury the concrete straight and firmly, the present invention can be embedded in the concrete pile more firmly without damaging the surrounding buildings of the construction site by being able to bury the concrete pile without vibration using the casing Oga. Vibration-free file laying corporation A.

Claims (5)

In the ground excavator for assembling a pile hole by assembling a casing organ in multiple stages to an organ drive unit, a structure in which a supply pipe for selectively supplying compressed air or cement paste is attached to both sides of the casing oars, and the lowermost casing o To the oga head attached to each of the three divided openings and hinges attached to each of the configuration so that each opening and closing can be assembled and disassembled in the form of a cone, and the vertex portion of each of the openings assembled in the form of a cone combined with a circular tip , The conical tip is to maintain the coupling state to maintain each cone opening in the forward rotation operation of the casing oga, and the conical tip is separated and dismantled from each of the openings gathered in a conical shape during the reverse rotation operation of the casing oga The opening and closing opening to the outward direction, and equipped with a casing after the excavation of the pile hole After inserting the concrete pile into the furnace, the casing Oga recovers the casing Ogawa Oga head by the reverse rotation operation, and the cement supply is injected into the supply pipe to fill the space where the casing Oga has escaped with the cement pool. Vibration-free pile laying device using a ground excavator characterized in that. The vibrationless pile embedding apparatus using a ground excavator according to claim 1, wherein the casing of the casing is composed of two rows of screw blades. According to claim 1, wherein the lowermost casing oh is welded the assembly cylinder at the lower end, the oga head is configured to form a binding stone piece and the urine ring frame is coupled to the binding plate assembled by the binding groove and the binding hole of the assembly cylinder. Vibration-free pile laying device using a ground excavator, characterized in that configured to be detachable to the Oga head to the assembly cylinder. According to claim 1 or claim 3, wherein each of the three opening and closing vertex portions respectively attached to the orga head hinges and engaging projections, the peripheral portion of the conical tip formed in the three openings in the coupling grooves in the configuration to each opening and closing Vibration-free pile laying device using a ground excavator, characterized by the detachable conical tip. When excavating pile hole by combining casing organs attached to both sides of the feed pipe passing through the screw blades, supply compressed air to the supply pipe to quickly move the soil excavated with the orga head upwards to make the soil working well. After the excavation of the pile hole, insert the pile into the casing, and then turn the casing back to separate the circular tip. When opening the openings of the orga head at the same time, supply cement paste through the supply pipe to Vibrationless pile laying method using a ground excavator, characterized in that the pile is buried in a way that the cement paste is filled in the space generated by the rise.