KR101400750B1 - Agitating device for ground improvement - Google Patents

Abstract

The present invention provides a soil agitation agitating apparatus capable of performing soil excavation and mixing at the time of ground excavation so that the depth of an improved ground can be easily checked after the ground improvement work is completed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an agitating device for an agitating device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirrer for soil improvement, and more particularly, to a stirrer for soil improvement, which is capable of performing soil excavation and mixing during soil excavation,

In general, the ground improvement agitator is used in the deep mixing process. The deep mixing process is a method of improving the properties of the soil such as cement, bentonite, lime, fire, slag or microorganism in the soil, The modified material which can be solidified or treated is introduced into the ground at a low pressure using a special equipment (Multi-Shaft Auger Machine) capable of rotating 1 to 4 axes of auger shafts equipped with a stirring wing, Which is caused by physico-chemical changes such as increase of water content, decrease of water content, increase of binding force, microbial treatment and the like, thereby increasing water repellency and compressive strength and preventing contamination diffusion.

Generally, in the agitator for soil improvement, the auger shaft has to be pierced to the desired depth, and an excavating wing is provided at the tip of the auger shaft.

However, in this kind of improvement of the ground, the constructor is not constructed as much as designed depth, but is installed relatively shallowly for reasons such as cost reduction, so it is necessary to inspect it after the ground improvement.

Korean Patent Registration No. 10-0497281 entitled " Agitation Apparatus for Improving Excavation < RTI ID = 0.0 > Reinforcement < / RTI & Korean Patent Registration No. 10-0517735 entitled "Soil insert and its method and depth inspection method using the ground insert"

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a ground penetrating structure capable of inspecting an improved depth so that the depth of an improved ground can be easily confirmed even after the ground improvement work is completed, And to provide an improvement stirring apparatus.

In order to solve the above-mentioned problems, the present invention provides a ground improvement agitating apparatus comprising: a gear box to be vertically fed; At least one or more excavating rods provided below the gear box and rotated by the gear box; A protection tube insertion pipe provided parallel to the excavation rod and fixed to the gear box in an opened state and positioned at the same height as the lower end of the excavation rod with the lower end thereof opened; A depth-of-view protective pipe provided along the inside of the protective pipe insertion pipe; A protective pipe fixing port which is coupled to a lower end of the depth-of-view protection pipe and seals the lower end of the depth-of-view protection pipe, and is located at a lower portion of the protective pipe insertion pipe; And a pair of friction bars hingedly coupled to both sides of the protective pipe fixing port so as to be rotatable, the rotation range of which is limited within a range from horizontal to upper 90 degrees.

In the above, it is preferable that the depth-of-view protection tube is in the form of a corrugated tube.

In this case, it is preferable that the friction bar is provided with a friction plate at its free end.

In the above, it is preferable that an insertion pipe receiving groove for inserting the protective pipe insertion pipe is formed on the upper surface of the protective pipe fixing port.

In the above, a depth inspection line may be provided in the depth-of-view protection pipe along the longitudinal direction of the depth-of-view protection pipe.

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As described above, according to the present invention, there is provided a ground improvement device for ground improvement, which is capable of performing the ground excavation and mixing when the ground improvement work is completed, so that the improved depth can be easily checked .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a ground improvement agitation apparatus according to an embodiment of the present invention;
Fig. 2 is an enlarged cross-sectional view of the main part of Fig. 1,
Fig. 3 is a perspective view and partial cross-sectional view of a protective pipe fastening port and a friction bar,
Figs. 4A to 4E show the construction process according to Fig. 1 in order.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Fig. 1 is an enlarged cross-sectional view of a main portion of Fig. 1, Fig. 3 is a perspective view and a partial cross-sectional view of a protective pipe fastening port and a friction bar, and Figs. 4 4e show the construction process of FIG. 1 in order.

The apparatus comprises at least one gearbox 100, at least one or more excavating rods 110 provided below the gearbox 100 and driven to rotate by the gearbox 100, And an insertion pipe (120).

The auger motor 101 is provided in the gear box 100 and the rotational force of the auger motor 101 is transmitted to the gear box 100 through the gear box 100, And transmitted to the rod 110. In this embodiment, a total of four excavation rods 110 are provided in the gear box 100.

The auger motor 101, the gear box 100, and the drill rod 110 are widely used in the related art, and a detailed description thereof will be omitted.

The present embodiment is provided with a protection pipe insertion pipe 120 in parallel with the excavation rod 110.

In the case of the ground improvement agitation device provided with four excavation rods 110, a protective pipe insertion pipe 120 is provided at the center of four excavation rods 110.

The upper end and the lower end of the protective pipe insertion pipe 120 are open and the upper end thereof is fixed to the gear box 100 by the insertion pipe fixing table 102. That is, the protective pipe insertion pipe 120 is moved up and down together with the gear box 100.

The method for fixing the protective pipe insertion pipe 120 to the gear box 100 may be variously adopted.

The protective pipe insertion pipe 120 is provided parallel to the drilling rod 110 and the lower end thereof is located at the same height as the lower end of the drilling rod 110.

A depth-of-field inspection pipe 130 is provided inside the protective pipe insertion pipe 120.

The depth-of-view protection pipe 130 is coupled with a protective pipe fixing port 140 at a lower end thereof through the inside of the protective pipe insertion pipe 120 from the upper part to the lower part.

The depth-of-view protective tube 130 may be an open-ended plastic tube or a corrugated plastic tube. Preferably, the depth-of-field protection tube 130 has a corrugated tube shape. This is preferable in that the depth-of-view protection pipe 130 is inserted into the ground and then prohibits the upward / downward movement thereof.

The protective pipe fixing hole 140 has a convex shape toward the lower part and a protective pipe coupling part 141 for coupling the protective pipe 130 for depth inspection is protruded on the upper surface thereof.

That is, the depth-of-view protection pipe 130 is fixed to the coupling door in such a manner as to surround the protective pipe coupling portion 141. Various methods can be adopted as a method of coupling the protective pipe joint portion 141 to the depth-of-field protective pipe 130. As shown in this embodiment, the depth-of-field inspection pipe 130 may be tightened with a separate linear member from the outside of the depth-of-view protection pipe 130, or the protective pipe coupling portion 141 may be provided inside the depth- It may be pressed and fixed.

In addition, an insertion pipe receiving groove 142 for inserting the lower end of the protective pipe insertion pipe 120 is formed on the upper surface of the protective pipe fixing port 140.

The fixing pipe insertion portion 121 is formed at the lower end of the protective pipe insertion pipe 120.

In other words, the arc-shaped fastener insertion portion 121 is inserted into the arc-shaped insertion pipe receiving groove 142.

The insertion pipe receiving groove 142 is provided only to prevent the protective pipe fixing port 140 from being shaken or rotated relative to the protective pipe insertion pipe 120 so that the protective pipe fixing port 140 is fixed to the protective pipe insertion pipe 120 no. That is, the protective pipe fixing port 140 has a structure that can be detached from the protective pipe insertion pipe 120.

As described above, the protective pipe fixing hole 140 not only seals the lower end of the depth-of-view protection pipe 130 but also prevents the protective pipe fixing hole 140 from moving or rotating in the horizontal direction with respect to the protective pipe insertion pipe 120 do.

On both sides of the protective pipe fixing port 140, a pair of friction bars 150 are provided.

One end of the friction bar 150 is hinged to one side of the protective pipe fixing port 140 while the other end of the friction bar 150 is provided with a free end and a friction plate 151 is provided.

The frictional bar 150 is rotatable with respect to the protective pipe fixing port 140, but its pivoting range is limited to within 90 degrees from the horizontal or upper portion due to the interference structure with the protective pipe fixing port 140. [ That is, the friction bar 150 allows the movement of the protective pipe fixing hole 140 to the lower portion in the ground by the friction with the gravel or the like, but prohibits the upward movement in the ground.

The construction method according to the present embodiment will be described with reference to Figs. 4A to 4E.

First, as shown in FIG. 4A, the present apparatus is placed on the ground to be excavated and improved. At this time, the depth-of-view protective pipe 130 is exposed long from the top of the protective pipe insertion pipe 120.

Next, as shown in FIG. 4B, the gear box 100 is transported downward for the purpose of ground improvement. At this time, each excavation rod 110 moves downward together with the gear box 100 to excavate the ground, and further, the ground improvement material is sprayed to improve the ground.

Meanwhile, the protective pipe insertion pipe 120 is also moved downward together with the gear box 100. However, the protective pipe insertion pipe 120 is not rotated.

At this time, the friction bar 150 rubs against the ground by the friction plate 151 and is inserted into the ground while being kept rotated by 90 degrees to the top.

Through the above process, excavation and improvement to the planned depth are completed, and the protective pipe fixture 140 is located up to the planned depth.

4C shows a state in which the protective pipe insertion pipe 120 is moved upward together with the gear box 100. As shown in FIG.

However, the lower end of the depth-of-field inspection protective pipe 130 is coupled to the protective pipe fixing port 140. When the protective pipe fixing port 140 moves upward, the friction bar 150 is unfolded in the horizontal direction The protective pipe fixing hole 140 maintains its original position.

Therefore, the lower portion of the depth-of-field protection pipe 130 remains in the ground.

4D shows a state in which the upper end of the depth-of-field inspection protective tube 130 exposed on the ground is cut.

According to this state, the construction by the present apparatus is completed.

In addition, when the construction is performed at another position, the protective pipe fixing port 140 and the friction bar 150 are installed again at the lower end of the depth-of-view protection pipe 130 to perform the installation.

5E shows the depth of the depth-of-view protection pipe 130 by inserting the depth-of-field inspection line 160 into the depth-of-view protection pipe 130 (which means the depth of the depth-of-field inspection line 160) ) Is measured.

Of course, if the depth inspection line 160 is continuously provided along the longitudinal direction of the depth-of-view protection pipe 130 in the depth-of-field protection pipe 130, the length of the depth inspection line 160 can be checked at any time, Can be checked.

In addition, the depth-of-field inspection line 160 may be installed together when the depth-of-field inspection pipe 130 is inserted into the ground.

Also, if a scale is displayed on the depth inspection line 160 in a predetermined unit, it will be very convenient to measure the length of the depth inspection line 160.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: gear box 101: auger motor
102: Insertion pipe holder
110: Excavation load
120: protective pipe insertion pipe 121: fixer insertion portion
130: Protection tube for depth inspection
140: protective pipe fixing portion 141: protective pipe coupling portion
142: Insertion pipe seat groove
150: friction bar 151: friction plate

Claims (7)

1. An agitation device for ground improvement, comprising:
A gear box to be vertically fed;
At least one or more excavating rods provided below the gear box and rotated by the gear box;
A protection tube insertion pipe provided parallel to the excavation rod and fixed to the gear box in an opened state and positioned at the same height as the lower end of the excavation rod with the lower end thereof opened;
A depth-of-view protective pipe provided along the inside of the protective pipe insertion pipe;
A protective pipe fixing port which is coupled to a lower end of the depth-of-view protection pipe and seals the lower end of the depth-of-view protection pipe, and is located at a lower portion of the protective pipe insertion pipe;
A pair of friction bars hingedly coupled to both sides of the protective pipe fixing port so as to be rotatable and whose rotation range is limited within a range from horizontal to upper 90 degrees,
And an agitating device for agitating the ground.

The method according to claim 1,
Wherein the depth-of-view protection pipe has a corrugated pipe shape. The method according to claim 1,
Wherein the friction bar is provided with a friction plate at its free end.
The method according to claim 1,
And an insertion pipe receiving groove for inserting the protective pipe insertion pipe is formed on the top surface of the protective pipe fixing port.
The method according to claim 1,
A depth inspection line provided along the longitudinal direction of the depth-of-view protective pipe in the depth-of-view protection pipe
And an agitating device for agitating the soil.
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