KR20160147142A - A sampler picker for soft soil ground - Google Patents

A sampler picker for soft soil ground Download PDF

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Publication number
KR20160147142A
KR20160147142A KR1020150083067A KR20150083067A KR20160147142A KR 20160147142 A KR20160147142 A KR 20160147142A KR 1020150083067 A KR1020150083067 A KR 1020150083067A KR 20150083067 A KR20150083067 A KR 20150083067A KR 20160147142 A KR20160147142 A KR 20160147142A
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KR
South Korea
Prior art keywords
sample collecting
connecting member
screw
bit
ground
Prior art date
Application number
KR1020150083067A
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Korean (ko)
Inventor
박수용
장재훈
Original Assignee
주식회사 케이이알
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Publication date
Application filed by 주식회사 케이이알 filed Critical 주식회사 케이이알
Priority to KR1020150083067A priority Critical patent/KR20160147142A/en
Publication of KR20160147142A publication Critical patent/KR20160147142A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil

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  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Soil Sciences (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The present invention relates to a rotary soil sample collecting apparatus for irradiating a soft soil, which can minimize the occurrence of sediment collapse because it can prevent damage to a sampler used for sampling and is inserted into the ground while rotating, A sample collection tube provided with the sample; A connecting member having a first magnet portion; A screw having a liquid receiving portion formed on an upper portion thereof and a bit detachably coupled to the second magnet portion; A first pressing member; A drawing member; And a second pressing member.
According to a preferred embodiment of the present invention, the problem that the connecting member and the bit are damaged by the excessive fastening force due to the repulsive force between the first magnet portion and the second magnet portion disposed opposite each other can be solved simply and fundamentally, Since the sample sampling pipe rotates through the connecting member and the screw and digs into the ground, it is possible to protect the tip end of the sampling pipe while minimizing the resistance at the tip end. Thus, the advantage of being able to digest the ground easily can be obtained .

Description

Technical Field [0001] The present invention relates to a soil sampler for soft soil investigation,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary soil sample collecting apparatus for soft ground investigation capable of preventing damage to a sampler.

Generally, the process of collecting sediment samples while forming a borehole in a sediment layer must be performed to determine the optimum conditions necessary for the design of all civil engineering works. Sampling processes have been essential to obtain data.

In the case of such sampling, the tubular sampler, which is connected to the power means, receives a blow or rotational force and penetrates into the stratum, so that the depth of the sampler is filled with the depth of the sampler. And to identify the strata of the sample from the outside.

According to a public utility model 1998-0059576, there are provided a cylindrical outer tube 1, a bit 2 which is joined to the lower end of the outer tube to bear intrusion resistance, And a cap 4 fixed to the upper end of the outer tube so as to immobilize the barrel 3. The inner barrel is replaced with a continuous barrel 3, So that sampling can be performed.

However, in the above conventional art, there is a problem in that a sample filled in a cylindrical barrel flows downward in the process of lifting the outer tube to the ground, and the layer of the optimum water can not be confirmed.

Accordingly, it has been found that the above-mentioned problem is solved by Patent Document 10-0848876, which briefly describes an outer tube connected to the first connecting device of the power means and penetrated or drawn into the ground layer, A second connecting device of the power means is connected in the interior of the inner tube and is inserted or salvaged into the stratum and is divided into at least one of an inner tube which is vertically divided into upper and lower portions and a sample tube which is inserted into the inner tube, And a core catcher provided on the inner tube to prevent the sample in the sample tube from flowing out when the inner tube is lifted. It is possible to prevent the sample from flowing down to the bottom when the sample is lifted to the ground.

However, since the sampler is also forced into the ground, the sidewalls of the borehole may cause sediment collapse, and thus there is a fundamental problem that it is not possible to collect a sample up to a deep region.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for detecting a soft soil which can minimize the occurrence of sediment collapse because it can be prevented from damaging the sampler used for sampling, The purpose of this research is to provide a rotating soil sample collection system.

According to an aspect of the present invention,

A sample collecting tube having a cylindrical shape and having an L-shaped engagement groove formed at an upper outer periphery thereof so as to be opened upward and downward;

A coupling member detachably coupled to the upper portion of the sample collection pipe, the coupling member having a coupling protrusion fitted into the coupling groove, a spiral projection engaged with the spiral groove, and a step on which the first pressing member and the second pressing member are seated;

A body is provided so as to be movable up and down inside the sample collecting tube, a spiral groove is formed along the circumferential surface of the body, and a lower portion of the body is connected to the sample collecting tube A fixing protrusion formed on an upper portion of the body and inserted and fixed in a fixing groove of the first pressing member and detachably fixed via the drawing member and the fastening member when the first pressing member is removed, Screw;

A first pressing member for vertically pressing the sample collecting tube, the connecting member and the screw so that the sample is inserted into the ground;

A drawing member which is detachably fixed via a screw and a fastening means to pull out the screw to draw the sample collecting tube and the connecting member to the ground; And

A second pressing member having a bearing at its lower end and pressing the step of the connecting member vertically so that the sample collecting pipe and the connecting member are rotated along the spiral groove to dig into the ground and collect the sample;

, ≪ / RTI &

A liquid accommodating portion for detecting whether or not the bit is worn through the leakage of the liquid is formed in the upper portion of the bit so that the liquid is received therein when the bit is separated from the body of the screw,

Wherein an oil film bearing portion in which lubricating oil is stored in the nano pores is provided on an inner peripheral surface of the sample collecting tube,

And a second magnet portion is provided on the upper surface of the bit so that a magnetic pole identical to the first magnet portion facing the first magnet portion is disposed on the lower surface of the connecting member.

According to a preferred embodiment of the present invention, the problem that the connecting member and the bit are damaged by the excessive fastening force due to the repulsive force between the first magnet portion and the second magnet portion disposed opposite each other can be solved simply and fundamentally, The bit is detachably coupled to the body of the screw, so that only the bit other than the entire screw can be easily replaced when the bit is worn or damaged, and the liquid containing portion is formed on the bit, It is possible to easily detect whether the bit is broken or not. Further, since the oil film bearing portion is provided on the inner circumferential surface of the sample collecting tube, contact wear can be prevented when the bit moves up and down inside the sample collecting tube, So that the tip of the sampling pipe can be protected, It can minimize the resistance has the advantage that you can more easily enter digging underground sampling.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of a first embodiment of a rotary soil sample collecting apparatus for soft ground survey according to the present invention. FIG.
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
Fig. 3 is a sectional view of Fig. 1; Fig.
4 is a drawing of a rotary soil sample collecting apparatus for soft ground survey according to the present invention to which a drawing member and a second pressing member are applied.
Fig. 5 is a sectional view of Fig. 4; Fig.
6A to 6C are diagrams showing a use state of a rotary soil sample collecting apparatus for soft ground survey according to the present invention.
FIG. 7 is a view illustrating a method of detecting a wear or break of a bit through the leakage of a liquid by pouring a liquid into a liquid containing portion of the rotary ground sample collecting apparatus for soft ground survey according to the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 5, a rotary soil sample collecting apparatus for soft ground survey according to the present invention includes a sample collecting pipe 10, a connecting member 20, a screw 30, a first pressing member 40, The drawing member 50 and the second pressing member 60, and is used for confirming the state of the ground for foundation work.

The lower end of the sample collecting tube 10 is inclined so as to minimize the resistance when the sample is taken into the ground for sampling, and an L-shaped The engaging grooves 11 of the connecting member 20 are formed to face each other and are detachably engaged with the engaging projections 21 of the connecting member 20 to be described later.

Particularly, it is preferable that the inner circumferential surface of the sample collection pipe 10 of the rotary type soil collecting apparatus for soft ground survey according to the present invention is provided with the oil film bearing unit 13 in which lubricating oil is stored in the nano pores. The oil film bearing portion 13 is made of a carbon alloy material molded to have a porous structure.

Even when the outer circumferential end of the bit 32 is brought into contact with the inner circumferential surface of the sample collecting tube 10 when the screw 30 is moved up and down in the sample collecting tube 10, It is possible to prevent the bit 32 from being contact-worn or damaged by forming a fine lubricant film.

The connecting member 20 is a member for interconnecting the sample collecting tube 10 and the screw 30.

In the present embodiment, the connecting member 20 is formed in a circular tube shape as a whole, and has a step 23 protruding inwardly at the center of the inner peripheral surface to seat the first pressing member 40 and the second pressing member 60 A spiral protrusion 22 is integrally formed on a lower inner circumferential surface of the lower end surface of the sample collecting tube 10 so as to correspond to the spiral groove 31 of the screw 30. The outer circumferential surface of the sample collecting tube 10 And a coupling protrusion 21 detachably coupled to the coupling groove 11 is integrally formed.

The screw 30 serves to protect the distal end of the sample collection tube 10 when the ground is excavated. When the sample is taken, the sample collection tube 10 is inserted into the ground while being rotated via the connecting member 20 It acts as a central axis for

The screw 30 is formed in a cylindrical shape as a whole and inserted into the sample collecting tube 10 and connected to the sample collecting tube 10 by the connecting member 20 so that the inside of the sample collecting tube 10 A spiral groove 31 is formed along the longitudinal direction on the circumference of the body 30a and a conical bit for excavation is formed in the lower end of the body 30a. And a fixing protrusion 33 is integrally formed on an upper portion of the body 30a.

The fixing protrusion 33 is inserted into and fixed to the fixing groove 41 of the first pressing member 40. When the first pressing member 40 is removed, .

2 and 7, the upper portion of the bit 32 of the rotary soil sample collecting apparatus for the soft ground survey according to the present invention is provided with an inner It is preferable that the liquid receiving portion 32a is formed so as to be recessed so as to allow the liquid to be received and to detect whether or not the bit 32 is worn through the leakage of the liquid.

At this time, the liquid accommodating portion 32a is preferably formed on the upper portion of the male threaded protrusion so that the bit 32 is detachably coupled to the body 30a of the screw 30 from above the bit 32 .

On the other hand, the liquid poured into the liquid containing portion 32a may be ordinary water, but may be a liquid containing a fluorescent substance. In this case, ultraviolet rays of about 330 to 390 nm So as to detect the wear or breakage of the bit 32 through the presence of fluorescence penetration.

Accordingly, when liquid such as water is poured into the liquid containing portion 32a, the liquid leaking to the outer surface of the bit 32 is detected through the crack C extending from the inside of the bit 32 to the outer surface thereof It is possible to easily and easily inspect whether or not the bit 32 is seriously worn or damaged and if the bit 32 to be inspected is detected as being worn, So that the cost can be reduced.

In the rotary ground sample collecting apparatus for surveying the soft ground according to the present invention, a first magnet portion 24 having magnetism is provided on the lower surface of the connecting member 20, and on the upper surface of the bit 32, It is preferable that the second magnet portion 32b is disposed so that the same magnetic pole is disposed with respect to the first magnet portion 24 viewed from the first magnet portion.

6C, when the screw 30 is lifted inside the sample collecting tube 10 by the pulling member 50, the first magnet portion 24 and the second magnet portion 24, which are disposed opposite to each other, The problem that the connecting member 20 and the bit 32 are damaged by the excessive fastening force due to the repulsive force between the magnet portions 32b can be solved simply and fundamentally.

The first pressing member 40 is installed in a normal crane and functions to vertically press the sample collecting pipe 10, the connecting member 20 and the screw 30 to be inserted into the ground.

Particularly, a fixing groove 41 is formed at the center of the first pressing member 40. The fixing groove 41 is engaged with the fixing protrusion 33 so that when the screw 30 penetrates the ground, 30).

In the present embodiment, the fixing protrusions 33 and the fixing grooves 41 are formed in a rectangular parallelepiped shape.

According to the present embodiment, when the sample collecting tube 10, the connecting member 20 and the screw 30 are pressed through the first pressing member 40, 10, the connecting member 20 and the screw 30 are inserted into the ground.

4 and 5, the pulling member 50 is a member which is fixed to the crane and is used after removing the first pressing member 40. In this embodiment, the fixing projections 33 of the screw 30, And the screw 30 is pulled out to take out the sample collecting tube 10 and the connecting member 20 to the ground. The screw 30 and the screw 30 are fixed to each other by fastening means (bolts and nuts).

The second pressing member 60 is a member fixed to the crane while surrounding the drawing member 50. The second pressing member 60 has a bearing 61 at the lower end of the sample collecting pipe 10 along the spiral groove 31, And presses the step 23 of the connecting member 20 vertically so that the connecting member 20 can be digested into the ground while sampling the sample.

Here, the bearing 61 is used for minimizing frictional resistance when the connecting member 20 is rotated by the second pressing member 60.

The use state of the present invention having the above-described configuration will now be described.

The screw 30 and the connecting member 30 are connected to each other through the upper end of the sample collecting tube 10 in a state in which the screw projections 22 of the connecting member 20 and the helical grooves 31 of the screw 30 are mutually fastened, The coupling protrusions 21 of the coupling member 20 are inserted into the coupling grooves 11 of the sample collection tube 10 to be coupled.

When the assembly is completed as described above, the first pressing member 40 is coupled to the upper ends of the sample collecting pipe 10 and the connecting member 20 in a state where the assembly is vertically disposed in the ground check area.

At this time, it is preferable that the fixing groove 41 of the first pressing member 40 is engaged with the fixing protrusion 33 of the screw 30 so that the screw 30 is not rotated when digging the ground surface.

When the first pressing member 40 is vertically lowered by using a crane (not shown), the sample collecting pipe 10, the connecting member 20, and the screw 30 are pressed by the first pressure Is inserted into the ground by the member 40, which is shown in Fig. 6a.

When the sample collecting tube 10, the connecting member 20 and the screw 30 are inserted into the ground at a predetermined depth, the first pressing member 40 is removed.

When the first pressing member 40 is removed, the second pressing member 60 and the drawing member 50 are sequentially disposed.

Next, an extrusion member 50 is installed on the screw 30, and one end of the extrusion member 50 is installed on the fixing protrusion 33 via fastening means (bolts and nuts) Time.

The second pressing member 60 is vertically lowered by using a crane (not shown) while being fixed to a crane (not shown) so that the pulling member 50 is not rotated when the pulling member 50 is installed The sample collecting tube 10 and the connecting member 20 are rotated slowly along the spiral groove 31 of the screw 30 via the spiral projections 22 by the second pressing member 60 which is vertically pressed And the sample is taken from the sample collection pipe 10 while being descended at the same time as shown in FIGS. 6B and 6C.

Here, it should be noted that since the sample collecting tube 10 penetrates into the ground while rotating through the connecting member 20 and the screw 30, the tip end portion of the sample collecting tube 10 can be protected, It has the advantage of being able to dig into the ground more easily because it can be minimized.

When the sample collection by the sample collection tube 10 is completed, the screw 30 is pulled out through the extraction member 50 by using a crane (not shown) to connect the sample collection tube 10 and the connection member 20 You can take it out to the ground.

The desired area can be confirmed in the same manner as described above.

10: Sampling pipe 20: Connecting member 22: Spiral projection
30: screw 31: spiral groove 40: first pressing member
50: drawing member 60: second pressing member

Claims (1)

A sample collecting tube 10 having an inner L-shaped opening and a L-shaped coupling groove 11 formed at an upper outer periphery thereof;
The engagement projections 21 to be fitted into the engagement grooves 11 and the helical projections 22 to be engaged with the helical grooves 31 and the stepped portions 22 to which the first and second pressing members 40, 23) and detachably coupled to the upper portion of the sample collecting tube (10);
The body 30a is inserted into the sample collecting pipe 10 and connected to the sample collecting pipe 10 by the connecting member 20 and is vertically movable in the sample collecting pipe 10, A helical groove 31 is formed along the circumferential surface of the body 30a and a conical bit 32 is detachably coupled to a lower end of the body 30a and is formed on an upper portion of the body 30a, (30) having a fixing protrusion (33) inserted and fixed in the fixing groove (41) of the first pressing member (40) and detachably fixed to the drawing member (50) );
A first pressing member (40) for vertically pressing the sample collecting tube (10), the connecting member (20) and the screw (30) so as to be inserted into the ground;
A pulling member 50 detachably fixed to the screw 30 through a fastening means and pulling out the screw 30 to take the sample collecting tube 10 and the connecting member 20 to the ground; And
A bearing 61 is provided at the lower end of the connecting member 20 so that the sample collecting pipe 10 and the connecting member 20 are rotated along the spiral groove 31, A second pressing member 60 for vertically pressing the second pressing member 60;
, ≪ / RTI &
A liquid accommodating portion 32a for detecting whether or not the bit 32 is worn through the leakage of the liquid by allowing the liquid to be received therein when the bit 30 is detached from the body 30a of the screw 30, ) Is recessed,
The inner circumferential surface of the sample collecting pipe 10 is provided with a oil film bearing portion 13 in which lubricating oil is stored in the nano pores,
The first magnet portion 24 is provided on the lower surface of the connecting member 20 so that the same magnetic pole as the first magnet portion 24 facing the first magnet portion 24 is disposed on the upper surface of the bit 32 And a second magnet portion (32b) is provided on the second magnet portion (32b).
KR1020150083067A 2015-06-12 2015-06-12 A sampler picker for soft soil ground KR20160147142A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677502A (en) * 2017-10-13 2018-02-09 鲁东大学 A kind of pile foundation earth borrowing device
CN109655308A (en) * 2019-01-31 2019-04-19 中国地质大学（武汉） A kind of Portable detachable opening soil sampler suitable for sludge soft
CN111413137A (en) * 2020-05-22 2020-07-14 郭芳利 Sampling device for ecological environment construction and use method thereof
CN111505246A (en) * 2020-05-10 2020-08-07 潘奕华 Multifunctional soil detection device for environment detection
CN114353846A (en) * 2022-01-10 2022-04-15 李晓燕 Land space planning measuring instrument

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677502A (en) * 2017-10-13 2018-02-09 鲁东大学 A kind of pile foundation earth borrowing device
CN109655308A (en) * 2019-01-31 2019-04-19 中国地质大学（武汉） A kind of Portable detachable opening soil sampler suitable for sludge soft
CN109655308B (en) * 2019-01-31 2024-01-30 中国地质大学（武汉） Portable detachable open soil sampler suitable for silt weak soil
CN111505246A (en) * 2020-05-10 2020-08-07 潘奕华 Multifunctional soil detection device for environment detection
CN111505246B (en) * 2020-05-10 2022-04-15 武汉市秀谷科技有限公司 Multifunctional soil detection device for environment detection
CN111413137A (en) * 2020-05-22 2020-07-14 郭芳利 Sampling device for ecological environment construction and use method thereof
CN114353846A (en) * 2022-01-10 2022-04-15 李晓燕 Land space planning measuring instrument
CN114353846B (en) * 2022-01-10 2023-09-15 李晓燕 Land space planning measuring instrument

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