KR101170656B1 - Earth auger machine having multi shaft - Google Patents

Abstract

PURPOSE: An earth auger machine having multi shaft is provided to prevent each drilling rod from being bent and to improve the drilling and stirring efficiency of soil by drilling with 2-shaft drilling rods diagonally facing to each other while rotating in a clockwise and a counter clockwise. CONSTITUTION: An earth auger machine having multi shaft comprises an auger drive unit(2), a gear box(3), a left and right driving gear(26), a left front and rear interlocking gear, right front and rear interlocking gears(4c,4d), and a plurality of excavating rods. A motor is a power source for the auger drive unit. The gear box is installed in the lower part of the auger drive unit. The left and right driving gear is mounted in the inside of the gear box and installed in a deceleration output shaft of the auger drive unit. The left front and rear interlocking gears and the right front and rear interlocking gears are receives power from the left and right driving gear, thereby rotating. The excavating rods are connected downwardly to the left front and rear interlocking gears and the right front and rear interlocking gears, thereby excavating and beating the ground.

Description

Long Depth Multi-Axis Ground Excavation Stirrer {Earth auger machine having multi shaft}

The present invention relates to a long-depth multi-axis ground excavation stirrer, and more particularly to auger drive unit of the multi-axis ground excavation device for drilling and stirring the soft ground by connecting assembling two to five axis excavation rod to improve the soft ground Excavating the soft ground deeper than the vertical length of the leader installed vertically to guide the lifting operation of the auger drive unit by extending the assembly of 2 to 5 axes of extension rods to protrude upward of the gear box installed on the lower side. And it relates to a long axis multi-axis ground excavation stirrer to enable stirring.

In general, the ground excavation device for constructing piles for construction of soft ground improvement, continuous continuous wall construction, or construction of high-rise buildings, etc. is excavated by injecting only one type of cement paste into the excavated excavation hole. It is mainly used in the method of digging the soft ground by mixing the soil and cement paste evenly by mixing the cement paste injected with the cement paste and the method of digging the soft ground by injecting both cement paste and air into the excavated excavation hole at the same time. .

The multi-axis ground excavation agitator of the prior art is provided with an auger drive unit which is installed to be able to move up and down along a leader fixed vertically to the ground, and a deceleration output shaft of the auger drive unit is installed below the auger drive unit. A main shaft having a rotatable gear box, an arm joint for connecting an interlocking gear and an excavating rod engaged with a drive gear fixed to the reduction output shaft while rotatably installed on the gear box, and the main shaft; Swivel for rotatably mounted on the top of the shaft to supply the cement pool to be transported from the outside to the main shaft, and cement pool supplied through the main shaft in a multi-phase connection to the female joint of the lower end of the main shaft into the drilling hole Consists of a plurality of excavating rods that are assembled and assembled in multiple stages up and down to discharge, The ground excavation agitation device is configured to excavate and stir the ground by selectively connecting and assembling a plurality of excavating rods from one axis to eight axes on each of the main shafts of one axis to eight axes formed in the gearbox.

In addition, the conventional ground excavation stirring device is a main shaft of one axis to five shafts rotatably mounted to the gear box and the drilling rods of each of the one axis to eight shafts are connected to the upper and lower multi-stage assembly to each of them, the main A plurality of supply pipes are connected to each of the supply passages formed in at least one shaft, and are configured to inject cement paste, air, chemicals, etc. into the excavation holes excavated during the ground excavation.

Conventional ground excavation agitator as described above is a water joint and arm assembled at the upper and lower ends of the main shaft and the excavating rod connected to the ground when supplying only one kind of cement paste to the ground of the soft ground to be excavated Each of the supply passages penetrating the center of each of the joints one by one, and then connects the supply passage formed in each of the water joint and the female joint assembled on the upper and lower ends of the excavating rod with a single supply pipe, the supply of the main shaft The cement pool is supplied to the passage is discharged from the excavation hole excavated through a single supply pipe connecting the respective supply passages of the water joint and the female joint is configured to mix and stir the cement paste evenly in the excavated soil.

On the other hand, the vertical length of the leader that is installed vertically on the ground to enable the ground excavation stirring device to move up and down is determined according to the specifications of the total weight tonnage of the medium and large cranes. For example, the vertical length of a leader connected to the front end of a medium crane and fixed vertically to the ground is about 30m high, and the vertical length of the leader connected to the front end of a large crane and fixed vertically to the ground is It is installed at a height of about 40m.

Therefore, in the prior art, when constructing a soft ground improvement work and underground water barrier continuous wall construction work using the above-mentioned large and large cranes, the ground can be excavated and stirred from the ground to a depth of 30 to 40m below the ground. It is a situation that can not excavate and stir the ground to deep depth.

However, in recent years, various large-scale public facilities construction plans have been proposed to efficiently utilize the soft landfill areas such as the coastal areas and rivers, etc. There are many difficulties in soft ground improvement work that excavates the ground with depth, so it cannot be implemented.

On the other hand, the conventional ground excavation stirring device is mounted on the gear box of the auger drive unit which is installed to be suspended in the vertically fixed leader installed vertically on the ground arm joint (or male joint) of the main shaft protruding to the bottom Since it is configured to excavate and stir the ground while assembling a plurality of excavating rods in the upper and lower multi-stage, the existing ground excavation stirring device connects the excavating rod of one axis to the main shaft of the gear box installed at the bottom of the auger drive unit. If the ground is to be excavated by assembling, the ground excavation work is carried out to the low height of the leader where the augmentation operation of the auger drive unit is completed. If you want to proceed, remove the excavation rod of one shaft connected to the main shaft of the gearbox. Move the auger drive unit to a certain height, and then lift the new excavation rod to be assembled by crane, and the top of the excavation rod is on the main shaft of the gearbox, and the bottom is on the excavation rod which protrudes to the ground. The drilling hole can be drilled deeper than the vertical length of the leader by connecting each one.However, when excavating and stirring the ground by thermally assembling the single shaft drilling rod to the gear box of the auger drive unit in the upper and lower stages. It is only possible, on the contrary, a leader that is fixed vertically to the ground in a method of drilling and stirring the ground by assembling two or more excavation rods of the gearbox of the auger drive unit, for example, by connecting four excavation rods to the gearbox. It is not possible to excavate the ground deeper than its vertical length.

Because, in order to connect additional drilling rods to each of four-axis drilling rods that are connected to the four-axis main shaft protruding to the gearbox bottom of the auger drive unit, the four-axis drilling rods to be additionally assembled by lifting the crane at the same time Since the assembling work is very difficult and difficult, in the method of excavating the ground with two or more excavating rods, it is necessary to connect the excavating rods to the two or more excavating rods which are assembled and assembled in multiple stages under the auger drive unit. Since it is virtually impossible, in the prior art, when constructing a soft ground improvement work or a continuous wall construction work of underground water barrier using a medium and large crane, the excavation hole can be excavated deeper than the vertical length of the leader fixed vertically to the ground. Deeper than the vertical length of the leader Soil drilling stirred construction to digging and agitating the soil is a situation that does not conduct.

The multi-axis ground excavation agitation device used for soft ground improvement construction and continuous construction of underground water barriers is mainly used to excavate and stir the ground using four-axis excavation rods. 1, the left front drilling rod 110 and the right rear drilling rod 140 are rotated in the clockwise direction, and the left rear drilling rod 120 and the right front drilling rod 130 as shown in FIG. 1. It is known that digging while rotating counterclockwise can efficiently excavate and stir the ground.

Therefore, in the prior art, a lot of efforts have been made in research and development to connect and assemble four-axis excavation rods to a multi-axis ground excavation stirring device to rotate each of the four-axis excavation rods as shown in FIG. 10-0733820, 10-0921219, 10-0921220 has been introduced in the.

The prior art described above is a four-axis drilling rod connected to the gearbox with one or two motors as a power source of the OGA drive unit, and the two-axis drilling rod installed in a diagonal direction as shown in FIG. 1 rotates clockwise. The other two drilling rods are rotated counterclockwise. To this end, a plurality of gears receiving a driving force from the driving gears attached to one or two motor output shafts are arranged in two to three stages. It has a structure, which is not only complicated structure by a plurality of gears arranged in the upper and lower two-stage and three-stage inside the gearbox, but also due to the problem that the weight of the gearbox itself increases a lot If you move the auger drive unit, which is installed on the lift, to the top height of the reader, the reader The problem of preventing securely support the center of gravity of the unit is generated, resulting in a situation that does not use the various construction to stir digging the ground to a deeper section than the vertical length of the reader field.

Korean Patent Publication No. 10-0733820 Korean Patent Publication No. 10-0921219 Korean Patent Publication No. 10-0921220

The present invention has been proposed in view of the above-mentioned problems in the prior art, and the auger drive is installed to be able to move up and down along the leader while being installed in a state suspended from the leader fixed vertically to the ground Excavation of deeper depth than the vertical length of the leader fixed on the ground by improving the multi-axis main shaft structure formed in the gear box mounted on the unit to connect and assemble the multi-axial extension rod to protrude upward of the gear box The purpose is to be able to excavate the ball, and also the two shafts installed to face in a diagonal direction of the four-axis drilling rods are assembled to the four-axis main shaft formed in the gearbox can rotate clockwise and counterclockwise It was invented for a different purpose in arranging gears.

The present invention as a means for achieving the above object,

An auger drive unit using a motor as a power source, a gear box mounted at a lower end of the auger drive unit, left and right drive gears rotatably mounted in the gear box and affixed to a reduction output shaft of the auger drive unit, The left front and rear interlocking gears and the right front and rear interlocking gears installed to rotate by receiving power from each of the left and right drive gears, and the left front and rear interlocking gears and the right front and rear interlocking gears, respectively, are directed downward. In the multi-axis ground excavation stirring device having a plurality of drilling rods which are assembled and assembled in multiple stages to excavate and stir the ground,

The gear box has a plurality of main shafts are fixedly installed in the state of being fitted in each of the bearing holes formed in the center of the left front, rear interlocking gears and the right front, rear interlocking gears to rotate together with each interlocking gear,

A pair of keys are formed on the inner surface of each of the plurality of main shafts so as to face each other.

The hollow portion of each of the plurality of main shafts is inserted and assembled to allow the slide movement up and down, and the upper and lower key grooves are locked and opened on the keys facing each other on the inner surface thereof, and a key guide passage connecting the upper and lower key grooves. Is characterized in that the configuration including the elastic rod is formed symmetrically.

In addition, the expansion rod can be assembled by connecting the upper elastic rod formed with the upper key groove, the lower elastic rod formed with the lower key groove, and the intermediate elastic rod formed with the key guide passage connecting the upper and lower key grooves. It is characterized in that it is configured to be divided.

In addition, an upper key guide passage connecting the lower key rod of the upper key groove and the key guide passage of the middle elastic rod is formed in the upper elastic rod of the elastic rod, the key guide passage of the upper and middle elastic rod of the lower key groove in the lower elastic rod. Characterized in that the lower key guide passage for connecting the formed.

In addition, each of the upper and lower ends of the upper elastic rod is formed with a flange for mounting the swivel for supplying cement paste and a water joint for connecting the intermediate elastic rod, and the upper and lower ends of the middle elastic rod, respectively A female joint is connected to the male joint formed at the bottom of the rod and a male joint is connected to the lower elastic rod, and upper and lower ends of the lower elastic rod are respectively connected to the upper end of the female joint and the excavating rod. It characterized in that the male joint is connected to the female joint formed in.

In addition, at the center of each of the upper and lower elastic rod of the expansion rod is characterized in that the supply passage is connected to each other in order to supply any kind of cement paste, air, chemicals.

In addition, the upper and lower steps of the upper and lower key grooves formed on the upper and lower elastic rods are formed with upper and lower steps so that the keys formed to face each other are formed on the inner surfaces of the hollow parts of the plurality of main shafts, respectively. It is done.

In addition, the left and right driving gears mounted on the gear box are assembled to be engaged with the left and right front interlocking gears, respectively, and are configured to directly receive rotational power from the left and right driving gears. The rear interlocking gear is assembled to be engaged with each of the left and right idle gears that are assembled to the left and right drive gears, respectively, so that the rotational power of the left and right drive gears can be indirectly transmitted by the left and right idle gears. It is characterized in that it is configured to.

In addition, each of the left and right idle gears is inserted into the gearbox through an interlocking gear assembly hole in which the left and right rear interlocking gears formed on the bottom of the gearbox are assembled, and then moved toward the gear pin assembly hole, and then the gear pin assembly hole. It is characterized in that it is rotatably assembled to the gear assembly pin fitted.

According to the present invention is installed in the gearbox to excavate the excavation hole with a deeper depth than the vertical length of the leader is installed vertically fixed to the ground in the construction of soft ground improvement construction and underground wall continuous construction The expansion rods can be connected to each of the plurality of main shafts by rotating the crane and the auger drive unit in the forward and reverse directions without the task of connecting the expansion rods to each of the plurality of main shafts by manual assembly of the operator. Therefore, it has the effect of protecting the worker safely, and the rotational direction of each of the four-axis excavating rods connected to the gearbox are assembled in one diagonal direction facing the rotational direction of the two-axial digging rods facing the other diagonal direction. Directions of rotation of different drilling axes of different two axes (clockwise and counterclockwise) By drilling the ground while rotating in the direction), it is possible to prevent the bending phenomenon of each excavating rod and to improve the excavation and stirring efficiency of the soil.

1 is a rotational operation state of the four-axis drilling rods assembled and connected to the multi-axis ground excavation stirring device for explaining the present invention
Figure 2 is an assembled state cross-sectional view of the gears mounted on the gearbox of the auger drive unit of the present invention
3 is a cross-sectional view taken along the line AA of FIG.
4 and 5 are a perspective view and a half cross-sectional front view of the upper expansion rod connected to the main shaft of the gearbox of the auger drive unit of the present invention
6 and 7 are a perspective view and a half sectional front view of the lower elastic rod connected to the main shaft of the gearbox of the auger drive unit of the present invention;
8 and 9 are a perspective view and a half sectional front view of an intermediate telescopic rod connected to the main shaft of the gearbox of the auger drive unit of the present invention.
10 is an assembled state connecting the lower expansion rod to the gearbox of the auger drive unit of the present invention
11 is a locking state in which the key of the main shaft is locked to the bottom of the lower keyway of the lower expansion rod when excavating the ground with the multi-axis ground excavation stirring device of the present invention
12 is a locking state in which the key of the main shaft is locked to the upper end of the lower keyway of the lower elastic rod when the drilling rod of the multi-axis ground excavation stirring device of the present invention is taken out;
13 is an operation state of matching the key of the main shaft to the lower key guide passage in order to separate the expansion rod of the multi-axis ground excavation stirring device of the present invention
14 to 16 is an operation state diagram of the excavation and stirring the ground by connecting the expansion rod to the auger drive unit of the present invention
17 is a top view of the gearbox of the auger drive unit of the present invention.
18 is a bottom view of the gearbox of the auger drive unit of the present invention.
19 is a cross-sectional view taken along the line BB of FIG.

When described in detail according to the accompanying drawings a specific embodiment of the long-depth multi-axis ground excitation stirring device according to the present invention.

Reference numeral 1 denotes a multi-axis ground excavation agitator, the multi-axis ground excavation agitator (1) is fixed to the ground vertically connected to the front end of the crane 200 is installed in a movable state on the ground ( Auger drive unit (2) is installed to be able to move up and down along the 300, the gear box (3) mounted on the lower end of the auger drive unit (2) and downward toward the bottom of the gear box It is composed of a plurality of excavation rods 100 which are connected and assembled in a multi-stage phase.

Embodiment of the present invention will be described by using the four-axis drilling rod 100 connected to the gear box (3) of the multi-axis ground excavation stirring device 1 as an embodiment.

The auger drive unit 2 has two motors 22 in which a planetary gear reducer is integrally assembled inside the case 21. The auger drive unit 2 also holds up and down a guide rod formed on one side of the leader 300. A plurality of sliders 27 for sliding are attached up and down.

The gear box 3 is mounted at the bottom of the case 21 of the auger drive unit 2, and the planetary gear reducer of each of the two motors 22 is connected to the upper surface of the gear box 3. The decelerating output shafts 23 and 24 of the planetary gear reducer which decelerate the rotational outputs of the two motors 22 are installed in the state of entering the gear box 3.

Left and right drive gears 25 and 26 are rotatably attached to each of the reduction output shafts 23 and 24 that enter the gearbox 3, and the inner corners of the gearbox 3 are rotated. A total of four interlocking gears 4a, 4b, 4c, and 4d are rotatably mounted on the part to rotate by receiving rotational power from the left and right driving gears 25 and 26, and the interlocking gear 4a described above. 4b, 4c, and 4d for convenience of description, the two interlocking gears mounted on the left side of the inside of the gearbox 3 based on the illustration of FIG. 2 are mounted to the right as the left front and rear interlocking gears 4a and 4b. The two interlocking gears are described as right front and rear interlocking gears 4c and 4d.

Each of the left front and rear interlocking gears 4a and 4b and the right front and rear interlocking gears 4c and 4d are installed to rotate by receiving rotational power from the left and right driving gears 25 and 26.

The present invention is characterized in that the main shaft 4 formed as a hollow shaft in each of the bearing holes 40 formed at the center of each of the left front and rear interlocking gears 4a and 4b and the right front and rear interlocking gears 4c and 4d. ) Are inserted into and assembled one by one, and the protruding keys are formed so as to face each other on the inner surface of the hollow part 41 of the main shaft 4 inserted into the bearing holes 40 of each of the interlocking gears 4a, 4b, 4c, and 4d. Assembling and assembling the stretch rod (5) using (42), while the stretch rod (5) is connected to the top of the excavating rod 100 is connected to the bottom of the gear box (3) of the gear box (3) It extends so that it may protrude upwards.

To this end, the stretch rod 5 is divided into upper, middle, and lower stretch rods (5a, 5b, 5c) is configured to be assembled up and down.

First, the upper elastic rod (5a) will be described, the upper end of the upper elastic rod (5a) is formed with a flange 50 is mounted with a swivel 43 for injecting cement paste supplied from the outside, A water joint 51 is formed at a lower end of the water joint 51, and both sides of the hollow part 41 of the main shaft 4 protrude from the inner surface of the hollow part 41 to accommodate each other. The upper key groove 52a is formed symmetrically on both sides, and an upper key guide passage 53 is formed between the male joint 51 and the upper key groove 52a to allow the key 42 to pass therethrough. It is.

In addition, two pin coupling grooves 511 are formed on both sides of the male joint 51 of the upper elastic rod 5a so as to engage the intermediate elastic rod 5b.

Next, a description will be given of the intermediate expansion rod (5b), the upper end of the intermediate expansion rod (5c) is formed with a female joint (54) in which the male joint 51 formed on the lower end of the upper expansion rod (5a) is removably assembled. At the bottom, a male joint 55 is formed at the bottom to allow the lower elastic rod 5c to be coupled thereto, and the female joint 54 at the upper end and the male joint at the lower end are formed at both sides of the outer surface of the intermediate elastic rod 5b. Intermediate key guide passages 56 that connect between the 55 are formed symmetrically.

In addition, the female joint 54 of the intermediate elastic rod (5b) 2 can be inserted into the pinned pin (not shown) coupled to the pin coupling groove 511 formed in the male joint 51 of the upper elastic rod (5a). Two pin coupling holes 541 are formed, and two pin coupling grooves 551 are formed to be shifted up and down on both sides of the male joint 55 so as to engage the lower elastic rod 5c.

In addition, the lower elastic rod 5c will be described. At the upper end of the lower elastic rod 5c, a female joint 55 formed with a detachable male joint 55 formed at the lower end of the intermediate elastic rod 5b is formed. And, at the bottom, a water joint 58 for connecting the excavation rod 100 is formed.

In addition, the upper key joint 58 of the lower elastic rod (5c) above the lower key groove for receiving the two keys (key: 42) protruding from the inner surface of the hollow portion 41 of the main shaft (4) facing each other 52b are symmetrically formed on both sides, and the pin joint groove 551 formed in the male joint 55 of the lower end of the intermediate elastic rod 5b in the female joint 57 of the lower elastic rod 5c. Pin coupling holes 571 are formed so as to correspond to each other, and both sides of the male joint 58 have pin coupling grooves 581 for coupling to female joints (not shown) formed at the upper end of the drilling rod 100. Although formed in the above, both side pin coupling grooves 581 are formed symmetrically in the same position with each other.

In addition, a lower key guide passage 59 is formed in the lower elastic rod 5c in a straight line to the upper end of the female joint 57 while being connected to the lower key groove 52b.

Upper and lower steps 50a and 50b are formed at the upper end of each of the upper key groove 52a formed in the upper elastic rod 5a and the lower key groove 52b formed in the lower elastic rod 5c. Each of the lower steps 50a and 50b stops the rotational operation of the four-axis drilling rod 100, and then raises and lowers the auger drive unit 2 up and down while being fixed to prevent movement by a hydraulic system. When the motor 22 is driven to rotate the main shaft 4 by a predetermined angle in the forward and reverse directions, the key 42 coincides with the upper key guide passage 53 and the lower key guide passage 59. It works.

The upper end of the extension rod 5, that is, the upper end of the upper extension rod 5a to inject the cement paste supplied from the outside into the excavation hole through the excavation bit (not shown) mounted on the bottom of the excavation rod 100 There is a swivel 43 for the assembly is assembled, the swivel 43 is installed on each of the upper end of the four-axis stretching rod (5) connected to each of the four-axis drilling rod 100 is installed connected to the gear box (3) will be.

At the center of each of the upper, middle, and lower stretch rods 5a, 5b, and 5c, supply passages 6 for supplying cement pool or the like injected into the swivel 43 to the excavation rod 100 are formed, respectively. have.

Another feature of the present invention, the gear box 3 of the multi-axis ground excavation stirring device (1) in the rotational operation of each of the four-axis excavation rod 100 when viewed based on the illustration of Figure 1 left front drilling rod (110: representatively described with reference '100') and the right rear drilling rod (140: representatively described with reference '100' when described) are configured to rotate clockwise, left The rear excavation rod 120 (represented by reference numeral '100' in the case of representative description) and the right front excavation rod (130: denoted by reference numeral '130' in the case of representation) are configured to rotate counterclockwise. .

To this end, of the four interlocking gears 4a, 4b, 4c, and 4d mounted inside the gearbox 3, the left front interlocking gear 4a is directly engaged with the left driving gear 25, while the left The rear interlocking gear 4b is configured to receive rotational power through the left idle gear 7a in a relaxed state from the left driving gear 25, and the right front interlocking gear 4c is the right driving gear 26. While being directly engaged with, the right rear interlocking gear 4d is configured to receive rotational power through the right idle gear 7b in a relaxed state with the right driving gear 26.

Here, two left and right driving gears 25 and 26 and four interlocking gears 4a, 4b, 4c, and 4d and two left and right idle gears 7a are arranged in the gear box 3. A total of eight gears (7b) and the like are arranged as shown in FIG. 2 and filled with oil, and when the gears (3) rotate while being engaged with each other by the driving of the motor (22). The gear box 3 is welded to the upper and lower surfaces 31 and 32 without assembling using bolts in order to satisfy the conditions such as to be able to withstand the pressure generated by frictional heat. In the conventional gearbox structure, the two left and right driving gears 25 and 26 and the four interlocking gears 4a, 4b, 4c, and 4d each weld the upper and lower surfaces of the gearbox. Assembly is possible even in the state of manufacturing the structure, left and right teeth characterized in the present invention Assembly of air (7a) (7b) was not possible.

Therefore, the present invention improved the structure of the gear box to be able to assemble the left, side idle gears (7a) (7b) to the gear box (3) made of a welded structure.

That is, four shaft assembly holes 34 are installed on the upper surface 31 of the gear box 3 so that four expansion rods 5: 5a, 5b, 5c, and 5d may be inserted into and protrude upward from the gear box 3. ) And two gear assembly holes 35 into which two left and right driving gears 25 and 26 can be inserted, and four interlocking gears 4a on the lower surface 32 of the gear box 3. 2 for inserting four interlocking gear assembly holes 36 for inserting 4b, 4c, and 4d, and gear assembly pins 37 for rotatably fixing left and right idle gears 7a, 7b. Gear pin assembly holes 38 are formed.

Two left and right drive gears 25 and 26 and four interlocking gears 4a, 4b, 4c and 4d and two left and right idle gears 7a in the gearbox 3 constructed as described above ( 7b) explaining the sequence of assembling. First, each of the two left and right idle gears 7a and 7b is inserted through the two right interlocking gear assembly holes 36 for inserting the right front and rear interlocking gears 4c and 4d. As shown in the figure, it is pushed toward the gear pin assembly hole 38. At this time, a bearing (not shown) is assembled in a pin hole formed in each of the left and right idle gears 7a and 7b.

As described above, the pin hole formed at the center of each of the left and right idle gears 7a and 7b inserted into the gear box 3 is aligned with the gear pin assembly hole 38. When the gear assembly pins 37 are fitted into each of the two gear pin assembly holes 38 formed in the 32, the left and right idle gears 7a and 7b are rotatable to the two gear assembly pins 37, respectively. A cover (not shown) is attached to the gear assembly hole 38 in which two gear assembly pins 37 are inserted to assemble the two left and right idle gears 7a and 7b so as to be rotatable. Will be.

After assembling the left and right idle gears 7a and 7b in the gearbox 3 as described above, the four interlocking gears 4a, 4b, 4c, and 4d in order to assemble the gears to the existing gearbox. And two left and right driving gears 25 and 26, the left front interlocking gear 4a and the left idle gear 7a are directly assembled to the left driving gear 25, and The left rear interlocking gear 4b is engaged with the left idle gear 7a to receive the rotational power of the left driving gear 25 from the left idle gear 7a, and the right side of the right driving gear 26 is right. While the front interlocking gear 4c and the right idle gear 7b are assembled so as to mate directly, the right rear interlocking gear 4d is assembled to mate with the right idle gear 7b and is right by the right idle gear 7b. The rotational power of the drive gear 26 is indirectly transmitted.

Therefore, the four interlocking gears arranged in the four corners of the gearbox 3 are rotated clockwise and counterclockwise with each other facing in a diagonal direction. That is, as shown in FIG. 2, when the left driving gear 25 is driven in the counterclockwise direction and the right driving gear 26 is configured to drive in the clockwise direction, the left front interlocking gear 4a and the right rear interlocking gear are rotated. 4d is rotated clockwise (forward rotation), and the left rear interlocking gear 4b and the right front interlocking gear 4c are rotated counterclockwise (reverse rotation).

The operation of the multi-axis ground excavation stirring device 1 of the present invention configured as described above will be described.

First, when the ground is to be excavated with a deeper depth than the vertical length of the leader 300 fixed to the ground perpendicularly to the ground four four mounted on the gear box (3) of the multi-axis ground excavation stirring device (1) Inserting and assembling a four-axis stretching rod (5) in each of the main shaft (4), at this time, as shown in Figure 10 is formed symmetrically in the lower portion of the lower expansion rod (5c) of the stretching rod (5) The lower elastic rod 5c is assembled in a state in which the two side keys 42 which are formed to face each other on the inner surface of the hollow part 41 of the main shaft 4 are inserted into the lower key grooves 52b on both sides thereof. After inserting and assembling the male joint 55 of the lower end of the intermediate elastic rod 5b into the female joint 57 formed on the upper end of the lower elastic rod 5c inserted into the main shaft 4, the female joint ( When the coupling pin (not shown) is inserted through the pin coupling hole 571 formed in the 57 The male joint 55 of the lower end of the elastic rod 5b and the female joint 57 of the upper end of the lower elastic rod 5c are assembled and assembled, and the upper elastic rod is mounted on the female joint 54 of the upper end of the intermediate elastic rod 5b. (5a) Inserting the male joint 51 at the lower end and binding with a coupling pin, the upper, middle, and lower elastic rods 5a, 5b, and 5c extend upwardly above the gear box 3 and are installed in an extended state. Will be.

As described above, the male joint 58 formed at the lower end of the lower elastic rod 5c inserted into the main shaft 4 mounted on the gear box 3 protrudes toward the bottom of the gear box 3 (Fig. 10), thus, each of the four-axis drilling rods 100 connected to the male joint 58 of each of the four-axis lower elastic rods 5c protruding to the bottom of the gearbox 3 is assembled in multiple stages to excavate the ground. As shown in FIG. 14, the ground excavation operation is started while lowering the auger drive unit 2 on a certain height of the leader 300 so that the lower end of the excavation rod 100 is higher than the ground. Done.

At this time, the two motors 22 of the auger drive unit 2 are driven in the forward and reverse directions so that the key 42 of the main shaft 4 is lower than the lower key groove of the lower expansion rod 5c as shown in FIG. 52b) to rotate the main shaft 4 in a state in which the locking operation to be locked to the lower end and one side (right side in the drawing), and thus both sides of the inner surface of the hollow portion 41 of the main shaft 4 When the key 42 protruding in the lowering of the auger drive unit 2 and the gearbox 3 while being locked at the bottom and one side of the lower key groove 52b and at the same time rotates the 4-axis drilling rod 100 The four-axis excavation rod 100 is to excavate the soil while excavating the ground, at this time, the cement pool, etc. supplied through a plurality of swivel 43 assembled on the upper end of each of the upper expansion rod (5a), It is connected to each other in the state formed in the center of each of the middle and lower elastic rod (5a, 5b, 5c) Is supplied to each of the four axis drilling rods 100 through the supply passage (6) which is discharged toward the soil excavated through the excavation bit at the bottom of each excavation rod, such as cement pool discharged from each excavation bit is excavated It is mixed evenly while stirring with the soil.

As described above, when the auger drive unit 2 descends to the lowered position set as shown in FIG. 15 by drilling the ground by rotating the 4-axis excavation rod 100, the auger drive unit 2 stops descending. The auger drive unit 2 should be moved up and down. In this case, the main shaft 4 is rotated by an angle by driving the motor 22 so that the key 42 is aligned with the lower key guide passage 59. When the auger live unit (2) can be moved upward to the upper expansion rod (5a), the main side (4) itself is installed in a concealed state inside the gear box (3) is not visible to the naked eye. In addition, since it is very difficult to accurately rotate the main shaft 4 at a set angle so that the key 42 of the main shaft 4 coincides with the lower key guide passage 59, the auger drive unit 2 is moved upwardly. The work When it is preventing.

However, the present invention moves the auger drive unit 2 toward the upper telescopic rod 5a by rotating the main shaft 4 and moving the auger drive unit 2 downward as shown in FIGS. 12 and 13. Ascending movement can be executed quickly and accurately.

That is, as shown in FIG. 12, the main shaft 4 is driven so that the key 42 formed in the main shaft 4 by moving the motor 22 moves to the left side in the drawing of the lower key groove 52b and is engaged with the left end thereof. ), And then lift the auger drive unit 2 upward as shown in FIG. 13 so that the auger drive unit 2 moves upward when the key 42 is caught on the upper left side of the drawing of the lower keyway 52b. The motor 22 is then driven to rotate the main shaft 4 so that the key 42 of the main shaft 4 is caught by the step 50b formed at one lower end of the lower key guide passage 59. When the key 42 is stopped at a position corresponding to the lower key guide passage 59 formed perpendicularly to the lower elastic rod 5c, the main shaft when the auger drive unit 2 is lifted up. The key 42 of (4) follows the lower key guide passage 59 to the upper key groove 52a of the upper elastic rod 5a. Since the upward movement can be performed, the auger drive unit 2 can be moved upward to the position of the upper elastic rod 5a of the elastic rod 5 as shown in FIG. 16.

As described above, when the ground excavation work is carried out while the auger drive unit 2 is moved up to the upper expansion rod 5a of the expansion rod 5, the inner surface of the hollow part 41 of the main shaft 4 faces each other. When the ground excavation work is performed after the main shaft 4 is rotated so that the formed both keys 42 are engaged with one end of the upper key groove 52a of the upper elastic rod 5a, the gearbox 3 is formed. Since the drilling operation can be carried out so that the lower elastic rod 5c to the intermediate elastic rod 5b of the elastic rod 5 protruding to the bottom of the ground can be inserted under the ground, the deeper than the vertical length of the leader 300 It is possible to excavate the ground.

On the other hand, when the auger drive unit 2 is to be moved upwardly from the position of the lower elastic rod 5c to the position of the upper elastic rod 5a, each excavation rod 100 of four axes is excavated by a locking operation such as a hydraulic device. In the state in which the rod 100 is fixed so as not to rotate, the auger drive unit 2 is raised. After the ascending movement of the auger drive unit 2 is completed, the four-axis drilling rod 100 is fixed. After the hydraulic device is open operation, the ground excavation work is carried out while rotating the excavating rod 100 of the four axes.

In addition, the present invention in the excavation of the ground by rotating each of the four-axis excavation rod 100 of the multi-axis ground excavation stirring device (1) while the excavation rods facing each other in a diagonal direction as shown in Figure 1 ground Can be excavated. For example, the left front drilling rod 110 and the right rear drilling rod 140 are rotated in the clockwise direction in the drawing, and the left rear drilling rod 120 and the right front drilling rod ( 130) is excavated soil is rotated in the counterclockwise direction in the drawing, so that the excavation of the excavated soil is made well, so that the cement paste discharged through the excavation bit of each excavation rod 100 is evenly mixed with soil and soft ground Improvement work and underground water barrier will be able to efficiently proceed with construction of continuous wall construction.

On the other hand, in the above described the embodiment of the four-axis excavation rod 100 is applied to the multi-axis ground excavation agitator (1), but by connecting and assembling two to eight axes of excavating rod to the gearbox 3 improved soft ground Construction and underground water barriers can be constructed for continuous wall construction.

Therefore, the specification and drawings for describing the embodiments of the present invention are merely intended to clearly explain a part of the technical idea, and the modifications can be easily inferred within the scope of the technical idea included in the specification and drawings of the above-described embodiment. Examples can be said to be included in the scope of the invention.

1: multi-axis ground excavation stirring device 2: auger drive unit
21 case 22: motor
23,24: Reduction output shaft 25,26: Drive gear
3: gearbox 31,32: upper, lower
34: shaft assembly 35: gear assembly
36: interlocking gear assembly 37: gear assembly pin
38: gear pin assembly 4: main shaft
4a, 4b, 4c, 4d: interlocking gear 40: bearing
41: hollow part 42: key
43: swivel 5: stretch rod
5a, 5b, 5c: upper, middle, lower extension rod
51,55,58: Male joint 52a, 52b: Upper and lower keyways
53: upper key guide passage 54, 57: female joint
56: intermediate key guide passage 59: lower key guide passage
6: Supply passage 7a, 7b: Left and right idle gear

Claims (8)

An auger drive unit (2) using a motor as a power source, a gear box (3) mounted on a lower end of the auger drive unit, and a left side rotatably mounted in the gear box and affixed to a deceleration output shaft of the auger drive unit The right front and rear interlocking gears 4a and 4b and the right front and rear interlocking gears 4c and 4d installed to rotate by receiving power from the right driving gears 25 and 26 and the left and right driving gears, respectively. And a plurality of excavating rods 100 connected to the left front and rear interlocking gears and the right front and rear interlocking gears in a plurality of phases connected downward to excavate and stir the ground.
The gear box 3 is fixedly installed in each of the bearing holes 40 formed at the center of each of the left front and rear interlocking gears 4a and 4b and the right front and rear interlocking gears 4c and 4d. A plurality of main shafts (4) are formed to rotate with each interlocking gear,
A pair of keys 42 are formed on the inner surface of the hollow part 41 of each of the plurality of main shafts 4 so as to face each other.
The hollow part 41 of each of the plurality of main shafts 4 includes an elastic rod 5 which is inserted to be slidably moved up and down, and is assembled to lock and open to keys 42 facing each other on the inner surface thereof. In the multi-axis ground excavation stirring device is configured,
The elastic rod 5 is formed with upper and lower key grooves 52a and 52b, respectively, which are assembled so that the key 42 formed on the inner surface of the hollow part 41 of each of the plurality of main shafts 4 is locked and opened. The upper and lower elastic rods 5a and 5b and the intermediate elastic rods 5b having intermediate key guide passages 56 connecting the upper and lower key grooves 52a and 52b to be connected and assembled. Longitudinal multi-axis ground excavation stirring device, characterized in that divided.
delete The method of claim 1,
An upper key guide passage 53 is formed at the upper stretch rod 5a of the stretch rod 5 to connect the lower key of the upper key groove 52a and the intermediate key guide passage 56 of the middle stretch rod 5b. , The lower extension rod (5c) is characterized in that the lower key guide passage (59) for connecting the upper key of the lower key groove (52b) and the intermediate key guide passage (56) of the intermediate elastic rod (5b) is formed Multiaxial Ground Excavation Stirrer.
The method of claim 1,
In each of the upper and lower ends of the upper elastic rod 5a, a flange 50 on which a swivel 43 for supplying cement paste is mounted and a water joint 51 for connecting the intermediate elastic rod 5b are formed. The upper and lower ends of the intermediate elastic rod 5b have female joints 54 connected to the male joints 51 formed at the lower ends of the upper elastic rods, and male joints 55 connected to the lower elastic rods 5c. Is formed, the upper and lower ends of the lower elastic rod (5c), respectively, the female joint (58) for connecting the female joint formed on the upper end of the excavating rod 100 and the female joint (57) for connecting the intermediate stretching rod is Longitudinal multi-axis ground excavation stirring device, characterized in that formed.
delete The method according to any one of claims 1, 3, and 4,
Keys formed on the inner surfaces of the hollow portions 41 of the plurality of main shafts 4 on the upper ends of the upper and lower key grooves 52a and 52b respectively formed on the upper and lower elastic rods 5a and 5c. Longitudinal multi-axis ground excavation stirring device, characterized in that the upper and lower step (50a, 50b) is formed so that the 42 is engaged.
The method of claim 1,
The left and right front interlocking gears 4a and 4c mounted on the gear box 3 are assembled to be engaged with the left and right driving gears 25 and 26, respectively, so that they are directly connected to the left and right driving gears 25 and 26. It is configured to receive the rotational power directly, and the left and right rear interlocking gears (4b, 4d) are to be engaged with the left and right idle gears (7a, 7b), respectively, to be assembled to the left and right drive gears. Longitudinal multi-axis ground excavation agitator, characterized in that the assembly is configured to receive the rotational power of the left and right drive gears (25, 26) indirectly by the left, right idle gears (7a, 7b) .
The method of claim 7, wherein
Each of the left and right idle gears 7a and 7b is formed in the gearbox 3 through an interlocking gear assembly hole 36 in which left and right rear interlocking gears 4b and 4d formed on the bottom of the gearbox 3 are assembled. The long-depth multi-axis ground excavation stirring device, characterized in that is rotatably assembled to the gear assembly pin (37) inserted into the gear pin assembly hole (38) after being inserted into the gear pin assembly hole (38).

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