KR101510649B1 - Excavting and agitaing lod apparatus for emproving soft soil - Google Patents

Abstract

The invention relates to an excavating and agitating rod apparatus for improving soft soil to form a pellet comprising an upper anchor and a lower pillar. The excavating and agitating rod apparatus can excavate soft soil in particular, and construct the lower pillar by injecting a soil ameliorater while boring an excavation hole (B1) up to a target depth (H1) in the soft soil by rotating and dropping a drill bit (70) and a lower agitating rod (60) to mix and agitate soil ameliorater with the excavated soil in an excavated hole. At the same time, an upper agitator (40) capable of sliding on a sliding rod (10) is rotated in a proper time by a clutch device (20). Therefore, an anchor of a relatively large diameter can be constructed on top of the lower pillar so that bearing power of the soft soil can be reinforced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an excavation and agitation rod device for soft ground improvement,

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to excavation and agitation rod apparatus for soft ground improvement. More particularly, the present invention relates to a method for manufacturing a pneumatic tire by punching a soft ground including sandy soil, clay or silt, piercing the ground improvement agent into the pierced hole, and agitating the soil and the soil conditioner, A soft ground improvement excavation used to form an underground solid body with a relatively large diameter bulb body at the top and a relatively small diameter lower body at the bottom to the target depth designed at the surface of the earth; To a stirring rod apparatus.

Before constructing a structure on a soft ground including sandy soil, clay or silt, organic soil, etc., the ground is first improved and stabilized by using a soft ground improvement apparatus. In this soft ground improvement method, the excavation and stirring rod apparatus disclosed in Patent Document 1 below is used.

KR 10-1284089 B1 A conventional drilling and stirring rod device for soft ground improvement is a drilling head having a plurality of drilling bits 110a at the lower end of a drilling rod 100 as disclosed in the patent document 1 (Figs. 1 and 5) And a plurality of lower stirring vanes are radially disposed on the excavation rod on the upper side of the excavation head 110. [ The lower stirring vane is fixed at a position spaced apart from the lower end of the excavation rod by a predetermined length in accordance with the target depth of the excavation hole to be excavated. As shown in the use state diagram of FIG. 7, the conventional drilling and stirring rod for modifying soft grounds has a structure in which a stirring vane 120 is installed on an upper portion of a drilling hole having a long depth drilled by the drilling head 110, The excavation rod 100 is fixed to the upper end of the excavation rod 100 so that the excavation rod 100 is pulled up to the ground from the ground improvement excavation hole after completion of excavation and stirring work for the ground improvement, The stirring vane 120 fixed to the upper end of the stirring vane 120 is elevated to a height corresponding to the depth of the excavation hole in the vicinity of the ground, Or the soil conditioner is scattered or falls, and the work environment is poor. Further, since the stirring blade 120 is fixed to the upper end of the excavation rod 100 corresponding to the depth of the excavation hole to which the ground improvement work is to be performed, the target depth is not constant but varies from the ground surface to the rock It is necessary to improve the soft ground by installing a plurality of excavation holes having different depths in the region where the depth of the excavator is changed, There is a disadvantage that the load must be prepared. In the conventional apparatus, there is a problem that the soil in the ground is entangled with the spiral wing on the upper side of the drilling bit during the drilling and stirring operation to form a cylindrical-type deposit, thereby interfering with the drilling and stirring operation.

Accordingly, the present invention was devised to solve the disadvantages of the above-mentioned conventional soft ground improvement drilling rod, and it is an object of the present invention to provide a drilling rig for improving soft ground which can perform excavation work and agitation work of various depths with various depths And a stirring rod.

It is a further object of the present invention to provide a method for manufacturing a bulbous body for forming a bulbous body, the bulb-forming upper agitator being slidably movable in a longitudinal direction on a sliding rod and pulling up from the excavation hole to the ground after completion of long- And an object of the present invention is to provide an excavating and stirring rod for improving the working environment and improving the safety of the soft ground by preventing the scattering of falling objects by preventing the upper agitator from being located at a minimum height on the ground.

It is a further object of the present invention to provide a milling cutter for a milling machine, which comprises a milling cutter fixed on the upper side of a milling bit for rotation of a milling bit, It removes the residue of the ingot in the bulb, and prevents the drop from falling off from the ground when the bulge is pulled together.

According to an aspect of the present invention, there is provided an excavating and stirring rod apparatus for excavating and stirring a soft ground by vertically moving up and down and rotating according to an operation of a driving device vertically moving along a reader installed upright on a moving object. The excavating and stirring rod device has a sliding rod in which an upper end is detachably coupled to a driving motor, and a ground improving agent supply passage is penetrated along a central axis direction;

An upper rod connected to a lower end of the sliding rod and rotated and lifted and lowered integrally with the sliding rod;

And a plurality of lower stirring vanes extending along the outer circumference of the body at the same length in the radial direction and having a plurality of sets along the longitudinal direction of the body, A bottom agitating rod for mixing and agitating the ground improvement agent provided through the soil excavated in the excavated small-diameter excavation hole and the soil improvement agent supply passage at a constant target depth;

A connecting pipe which is freely rotatably fitted to an outer periphery of the extension rod and operates independently of the sliding rod and the extension rod;

And is rotatably supported on the outer periphery of the extension rod and fixed to the lower end of the connection pipe by flange connection so as to be rotated and lifted up and down with the connection pipe and is relatively longer in length than the lower stirring wing of the lower stirring rod A plurality of upper stirring blades having a long length are radially extended and tips for stirring and drilling are attached to the tips of the respective upper stirring blades so that the upper part of the small diameter drilling hole is extended to the hole for the bulb of the large diameter, An upper agitator for mixing and agitating the excavated soil in the hole and the soil conditioner; And

And a clutch mechanism which timely connects the sliding rod and the connecting pipe together to interlock the sliding rod, the connecting pipe and the upper stirring member together.

The clutch mechanism includes an upper clutch disposed on the sliding rod and a lower clutch disposed on the connection pipe or the upper stirring member. When the lower stirring member is lowered and the lower end contacts the ground, the upper clutch and the lower clutch are engaged The clutch is turned on, and when the sliding rod is lifted, the upper clutch is disengaged from the lower clutch to perform the clutch OFF operation.

The clutch mechanism includes:

The upper clutch operates to engage with the lower clutch to interlock the sliding rod and the upper agitator when the upper agitator is lowered and the lower end touches the ground, and when the slag moving rod ascends, the upper clutch is disengaged from the lower clutch And a clutch operating means for separating the sliding rod and the upper stirring member.

The clutch operating means

A clutch operating lever whose one end is engaged with a groove of the upper clutch; and a brake operating lever which is engaged with a band stopper fixed to the reader when the lower stirring rod is lowered and the lower end thereof touches the ground, And a connecting bar for moving the clutch actuating lever in a direction in which the clutch actuating lever engages the upper clutch with the lower clutch by operation of the operating member.

When the bottom agitating rod is freely rotatably installed on the lower agitating rod on the upper side of the perforated bit so that the lower agitating rod is pulled out onto the ground while rotating in the direction opposite to the excavation direction, Finely crush the ingots to be drawn up.

According to the present invention, a single excavation rod can be used to perform excavation and agitation operations at various depths of target depth.

When the upper agitator for forming a bulbous body is provided so as to be slidable in the longitudinal and longitudinal directions on the sliding rod and pulled up from the excavation hole to the ground after completion of the excavation and stirring operation at the longest depth, It is possible to prevent scattering of falling objects, thereby improving the working environment and improving the safety. In addition, since the clutch device supports the stirring rod to maintain the verticalness of the stirring rod and prevents shaking, it is possible to perform a stable operation during excavation and stirring.

According to the present invention, there is provided a grindstone grinding cutter on the upper side of the drilling bit fixed to the rotation of the drilling bit so as to improve the stirring performance in the grinding wheel by pulverizing the discharged grindstone during drilling of the drilling bit, It removes the ingestion residue inside the body and prevents the ingot from falling out from the ground when it is pulled together.

Brief Description of the Drawings Fig. 1 is a front view of the excavating and stirring rod device for improving soft ground according to the present invention,
2 is an exploded perspective view of the excavating and stirring rod apparatus for soft ground improvement of the present invention,
FIG. 3A is a partially enlarged view for showing the separation state of the clutch mechanism of the excavating and stirring rod apparatus for soft ground improvement of the present invention,
FIG. 3B is a partially enlarged view for showing the engaged state of the clutch mechanism of the excavating and stirring rod apparatus for soft ground improvement of the present invention,
4 is an exploded perspective view showing a coupling relationship between a lower agitating rod and an upper agitator of the excavation and agitation rod apparatus for soft ground improvement of the present invention,
Fig. 5 is an assembled cross-sectional view of the lower agitator rod and the upper agitator of Fig. 4,
6A to 6E are schematic operation state diagrams showing an operation state in stages.
7 is an assembly view of a conventional excavating and stirring rod device.

1 is a schematic side view of a soft ground improvement apparatus provided with an excavating and stirring rod apparatus of the present invention. As shown in Fig. 1, a driving device 4 that moves up and down is installed along a guide pipe 2a of a reader 2 standing upright on a moving body 1. As shown in Fig.

As shown in FIG. 1, the excavating and stirring rod apparatus 100 of the present invention is installed along the longitudinal direction of the reader 2.

The excavating and stirring rod apparatus 100 includes a sliding rod 10 having an upper end coupled to the driving device 4, as shown in Figs. 1 and 2; An extension rod (50) coaxially connected to the sliding rod (10); A lower stirring rod 60 coaxially coupled to the lower end of the extension rod 50 and having a plurality of lower stirring vanes 63 on an outer periphery thereof; A puncturing bit 70 having a plurality of piercing tips 71 at the lower end and coupled to the lower end of the lower stirring rod 60; The upper rod 50 is slidably and rotatably fitted to the outer periphery of the rod 50 and is freely rotatably and slidably fitted to the rod 50. The upper rod 50 is provided with a plurality of upper stirring blades 42 radially extending on the outer periphery thereof. A stirring body 40; And the other side is connected to the upper end of the upper agitator 40 to selectively engage or separate the upper agitator 40 and the sliding rod 10, And a clutch mechanism (20) for transmitting or blocking the rotational power of the rod (10) to the upper agitator (40).

As shown in FIGS. 1 and 2, the sliding rod 10 includes two sliding rods 10A and 10B which are coupled to each other by a coupling (not shown) And the upper sliding rod 10A is detachably coupled to the driving device 4 at the upper end. Further, the sliding rod (10) penetrates the soil remedying agent supply passages (12a, 12b) along the central axis direction.

Therefore, as the driving device 4 rotates, the sliding rod 10 rotates. At the same time, as the driving device 4 moves up and down along the reader 2, the sliding rod 10 is also rotated and moved up and down .

When the soil conditioner is injected from the upper end of the sliding rod 10, the soil conditioner passes through the soil remedying agent supply passages 12a and 12b of the sliding rod 10, 60 and the drilling bit 70 and finally discharged into the drilling hole where the drilling bit 70 is excavated. This soil conditioner is mixed with the excavated soil of the excavation hole and agitated by the lower stirring vane 63 of the lower stirring rod 60 when the lower stirring rod 60 rotates in the excavation hole.

The upper end of the extension rod 50 passing through the connection pipe 30 is connected to the lower portion of the sliding rod 10, that is, the lower end of the lower sliding rod 10B. The stirring rod 60 and the drilling bit 70 are connected in a coaxial manner.

As the sliding rod 10, the connecting rod 50 and the lower stirring rod 60 are integrally rotated and simultaneously lowered, the drilled bit 70 disposed at the lowermost stage descends simultaneously with the rotation, The drilling hole is drilled to the target depth H1 and at the same time the drilling bit 70 is stirred by the lower stirring rod 60 in the drilled hole (see FIG. 6B).

As shown in FIGS. 2 and 4, the lower stirring rod 60 has a plurality of lower stirring vanes 63 extending radially outward on the outer periphery thereof along the longitudinal direction. As shown in FIGS. 4 and 6B, the drilling bit 70 rotates together with the sliding rod 10 and moves upward and downward while moving the drilling hole B1 of the diameter D1 to a predetermined target depth H1 At the same time, the lower agitating rod 60 provided on the upper side of the drilling bit 70 stirs the soil and the soil modifying agent with the lower agitating vane 63 in the excavation.

A coupling pipe 30 is coupled to the outer periphery of the extension rod 50 by a flange coupling method in a lower portion of the coupling pipe 30. The coupling pipe 30 has an upper end, Is fixed to the lower clutch (20B) of the engine (20). 2, a plurality of upper stirring vanes 42 are radially extended on the outer periphery of the cylindrical body 41, and the upper ends of the upper stirring vanes 42 are agitated and excavated And the tips 43 are attached. The upper stirring blade 42 is provided so as to gradually decrease in length from the upper portion to the lower portion and the upper stirring blade 42 is relatively longer than the lower stirring blade 63 of the lower stirring rod 60 It has a long length.

With this structure, the upper agitator 40 is disposed at the upper portion of the excavation hole B1 of the small diameter D1, which is opened in the ground by the drilling bit 70 provided at the lower end of the sliding rod 10, The soil in the bulbous hole B2 and the soil remediation agent are mixed and agitated while being expanded and pierced into the bulb hole B2 of the large diameter D2 by the stirring wing 42 and the stirring and drilling tips 43. [

2 and 3A to 3B, the clutch mechanism 20 includes an upper clutch 20A provided at a lower end of the sliding rod 10, A lower clutch 20B provided at an upper end of the connecting pipe 30 and a lower clutch 20B provided at an upper end of the lower clutch 20B when the upper stirring member 40 is lowered along the leader 2, And a clutch actuating means for engaging the sliding rod (10) with the upper agitator (40) by engaging the sliding rod (20B).

Therefore, according to the clutch mechanism and the clutch operation means, when the sliding rod 10 rotates, when the clutch mechanism 20 is in a disengaged state (clutch "OFF") as shown in FIG. 3A, Only the rod 10 rotates and the upper stirring member 40 coupled to the connecting pipe 30 and the connecting pipe 30 does not rotate.

Conversely, when the sliding rod 10 is rotated, as shown in FIG. 3B, when the clutch mechanism 20 is engaged (clutch 'ON'), the connection pipe (not shown) engaged with the sliding rod 10 30 and the upper agitator 40 connected to the connection pipe 30 are also rotated together with the upper portion of the drilling hole B1 formed by the drilling bit 70 as shown in Figures 6C to 6D The inner soil and the soil improvement agent are mixed and agitated while forming the expansion hole B2 so that the upper portion of the relatively large diameter D2 is formed on the upper portion of the drilling hole B1 of the small diameter D1 as shown in Fig. Thereby forming a bulbous body.

2 and 3A to 3B, the clutch actuating means includes a groove 23 formed along the circumferential direction of the upper clutch 20A, a groove 23 formed at one end thereof in the groove of the upper clutch 20A, (25) fixed to the reader (2) when the lower stirrer (40) is lowered and the lower end thereof touches the ground, a clutch operating lever (21) (22) for moving the clutch operation lever (21) in a direction in which the clutch operation lever (21) engages the upper clutch (20A) with the lower clutch (20B) And a bar (24). The clutch operating means is not limited to the above-described example, and other known clutch mechanisms can be used.

2 to 4, the upper agitator 40 is freely rotatably fitted to the outer periphery of the extension rod 50 while being fixed to the lower end of the connection pipe 30 by flange connection Loses. Therefore, when the coupling pipe 30 is rotated by the clutch-on operation of the clutch mechanism 20, the upper agitator 40 rotates and moves up and down together with the extension rod 50. Conversely, when the lower clutch 20B of the extension rod 50 is separated from the upper clutch 20A (clutch off), the coupling tube 30 is separated from the sliding rod 10, so that the sliding rod 10 and the extension rod 50, and the upper agitator 40 does not rotate.

On the other hand, as shown in FIG. 2, a bottom crushing cutter 80 is freely rotatably installed on the lower stirring rod 60 on the upper side of the drilling bit 70. Since the lower agitation rod 60 is freely rotatably fitted to the outer periphery of the lower agitation rod 60, the lower agitation rod 60 is pulled up to the ground while rotating in the direction opposite to the excavation direction The fine particles drawn along the spiral portion 72 of the perforated bit 70 are finely ground together to prevent the aggregate from remaining in the inside of the bulb, and stirring is smoothly performed inside the bulb. In addition, when the lower stirring rod 60 is pulled out, it is prevented from falling down to the ground after the balls generated in the excavation and stirring rise to the ground.

Hereinafter, the operation of the excavating and stirring rod apparatus 100 of the present invention will be described step by step with reference to FIGS. 6A to 6E.

A. Small hole drilling preparation step (FIG. 6A)

The sliding operation of the reader 2 and the driving motor 4 causes the sliding rod 10 to descend until the drilled bit 70 touches the ground.

B. Small diameter drill (B1) Excavation and Stirring  6b)

The driving device 4 and the reader 2 are operated so that the sliding rod 10 is rotated and lowered so that the drilling hole B1 having the diameter D1 is formed by the drilling bit 70 connected to the lower end of the sliding rod 10 The hole is drilled at a constant depth (H1). The lower agitating rod 60 provided on the drilling bit 70 descends along the drilling hole B1 where the drilling bit 70 has been drilled and the drilling hole 70 of the drilling hole B1 has been drilled, Is mixed with the soil conditioner.

C. Bulb hole (B2) for large diameter excavation and Stirring  6c)

When the lower end of the upper agitator 40 is brought into contact with the paper surface G in the step of Fig. 6B, the operating piece 22 of the clutch mechanism 20 is engaged with the band stopper The upper clutch 20A is engaged with the lower clutch 20B while being pressed against the lower clutch 20B. The sliding rod 10 is coupled with the connecting pipe 30 and the upper stirring member 40 so as to be integrally rotated and the upper stirring member 40 is rotated by the lowering of the reader 2, So that the upper portion of the excavation hole B1 is expanded to a relatively large diameter D2 while stirring to form the hole B2 for the bulbous body.

At this time, only the sliding rod 10 is further lowered to excavate the small-diameter excavation hole B1 to the target depth H1.

D. Sliding rod (10) and lower stirring rod (60) Draw  6d)

After the excavation hole B1 is excavated to the target depth H1 and the hole B2 for the bulbous hole is also excavated at the target depth and the soil improvement agent injected into the holes is stirred, ) Is rotated in the opposite direction to the excavation while raising the reader (2) to pull out the sliding rod (10). The lower stirring rod 60 connected to the sliding rod 10 is also pulled out.

3A, only the sliding rod 10 and the lower stirring rod 60 are pulled out and the upper stirring body 40 is not pulled out until the lower end thereof abuts on the upper end of the lower stirring rod 60 Do not.

When the lower agitating rod 60 is pulled out, the agitator grinder cutter 80 provided above the drilling bit 70 of the lower agitating rod 60 does not rotate. Therefore, when the drilling bit 70 rotates, (72) is finely pulverized so that agitation in the hole for the bulb can be efficiently performed.

E. Top stirrer of Draw  6E)

When the upper end of the lower stirring rod 60 is brought into contact with the upper stirring rod 40 while the sliding rod 10 is lifted and the lower stirring rod 60 is pulled out, the upper stirring rod 40 Is also pulled out and raised by a certain height L from the ground. Since the upper height L of the upper stirring member 40 corresponds to a height slightly longer than the entire length of the lower stirring rod 60, the upper stirring member 40 is integrally coupled to the lower stirring rod 60 In the conventional perforating and stirring apparatus, the upper agitator 40 does not rise by the full pulling height of the lower agitating rod 60 as long as the target depth, The remedial agent will not be scattered.

When the upper agitator 40 is pulled out, the upper agitator 40 is disconnected from the sliding rod 10 while the clutch mechanism 20 is disengaged, So that the soil and the soil remediation agent do not scatter.

1: Moving object 2: Reader
3: guide pipe 4: drive motor
10: Sliding rod 10A: Upper sliding rod
10B: lower sliding rod 11: coupling
12a, 12b, 50a, 60a: a ground improvement agent supply passage
20: clutch mechanism 20A: upper clutch
20B: lower clutch 21: clutch operation lever
22: Actuator 23: Groove
24: connecting bar 25: band stopper
30: connection pipe 40: upper stirrer
41: body 42: upper stirring blade
43: Tip 50: Extension Rod
60: lower stirring rod 61: body
63: lower stirring blade 70: drilling bit
72: spiral portion 80: disintegration breaker cutter
H1: Target depth of lower strut B1: Excavation hole for lower strut
B2: Extension hole for bulb 71: Drilling tip

Claims (5)

An excavating and stirring rod device (100) for excavating and stirring a soft ground while lifting and lowering and rotating according to the operation of a driving device (4) moving up and down along a leader (2) standing upright on a moving body (1)
The excavation and agitation rod device (100)
A sliding rod (10) detachably coupled to the driving device (4) and having therein a ground modifying agent supply passage (12a, 12b) penetrating along the central axis direction;
An upper end connected to the lower end of the sliding rod 10, an extension rod 50 rotating and lifting and lowering integrally with the sliding rod 10;
A plurality of lower stirring vanes 63 are coupled to the lower end of the extension rod 50 at a lower end thereof and a drilling bit 70 at the lower end thereof. (B1) is drilled at a predetermined target depth (H1) with a plurality of sets along the longitudinal direction of the excavator (61), and the soil excavated in the excavated hole (B1) A lower agitation rod 60 for mixing and agitating the soil conditioner provided through the first and second agitating units 12a and 12b;
The lower stirring rods 60 are rotatably and rotatably fitted to the outer periphery of the extension rod 50 via a connecting pipe 30 and are provided on the outer periphery thereof with a plurality of The upper stirring blades 42 extend in the radial direction and the tip of each of the upper stirring blades 42 is attached with stirring and drilling tips 43 so that the upper portion of the small- An upper agitator 40 for mixing and agitating the excavated soil and the soil conditioner in the hole B2 for the bulbous body while expanding the hole B2; And
And a clutch mechanism 20 for interlockingly rotating or interlocking the sliding rod 10 and the upper agitator 40 together by timely combining or separating the sliding rod 10 and the upper agitator 40 and,
The clutch mechanism 20 includes an upper clutch 20A provided on the sliding rod 10, a lower clutch 20B coupled to the upper stirring member 40, The upper clutch 20A and the lower clutch 20B engage with each other when the lower end reaches the ground and the upper clutch 20A is engaged with the lower clutch 20B when the sliding rod 10 is lifted. And clutch operating means for performing a clutch off operation,
The clutch operating means includes a groove 23 formed along the circumferential direction of the upper clutch 20A and a clutch operating lever 21 having one end coupled to the groove 23 of the upper clutch 20A, An operation piece 22 which is pressed by a band stopper 25 fixed to the reader 2 when the upper stirring member 40 is lowered and the lower end thereof touches the ground surface, And a connecting bar (24) for moving the clutch operating lever (21) in a direction in which the clutch operating lever (21) engages the upper clutch (20A) with the lower clutch (20B) . delete delete delete The method according to claim 1,
A bottom crushing cutter 80 is freely rotatably provided on the lower crushing rod 60 on the upper side of the drilling bit 70 so that the lower crushing rod 60 is drawn over the ground while rotating in the direction opposite to the excavation direction Grinding the loose aggregates drawn together along the spiral portion (72) of the drilling bit (70).

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