CN111289292A - Geotechnical sampling device for geotechnical engineering investigation - Google Patents
Geotechnical sampling device for geotechnical engineering investigation Download PDFInfo
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- CN111289292A CN111289292A CN202010232906.1A CN202010232906A CN111289292A CN 111289292 A CN111289292 A CN 111289292A CN 202010232906 A CN202010232906 A CN 202010232906A CN 111289292 A CN111289292 A CN 111289292A
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- sampling
- geotechnical
- rod core
- sample
- wall
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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
Abstract
The invention discloses a geotechnical sampling device for geotechnical engineering investigation, wherein a positioning opening is arranged in the middle of a base, an outer sleeve is vertically arranged in the positioning opening, a limiting boss is arranged at the upper end of the outer sleeve, a sampling window is arranged on the side wall of the outer sleeve, and a sample storage groove is arranged on the inner wall of a cavity; the sampling rod core is vertically inserted into the jacket from the top, a stud in threaded fit with the positioning screw hole at the bottom of the cavity is arranged at the lower end of the sampling rod core, a pushing blade is arranged on the outer wall of the sampling rod core, and the pushing blade corresponds to the sampling window and extends spirally around the sampling rod core. Geotechnical sampling device is used in geotechnical engineering investigation through above-mentioned optimal design fixes a position the sample location through the base, and during the sample, the thief rod core rotates, and in pushing away the sample storage groove that the sample window department pushed into the overcoat inner wall through pushing away the material blade, guarantee accurate mark sample location on the one hand, on the other hand when the overcoat was taken out, guarantee that the sample does not take place the secondary and scatter and pollute.
Description
Technical Field
The invention relates to the technical field of surveying, in particular to a geotechnical sampling device for geotechnical engineering surveying.
Background
In geotechnical engineering exploration, a sampling drilling tool is generally adopted for sampling. When sampling loose soft stratum and sand layer, the common sampling drilling tool adopts a core tube (or semi-closed tube) drilling tool with a step bit and a sand bailing barrel drilling tool with a hinge plate bit under the condition of outer casing protection wall. The drilling tool has the following defects when in sampling: 1) the outer sleeve process is complicated, the outer sleeve needs to be put in first during sampling, then a sampling drilling tool is put in the outer sleeve, then the outer sleeve is followed, then the sampling drilling tool is put in, and after the sampling drilling tool drills to a preset depth, the outer sleeve is pulled up; 2) the sample of the sampling drilling tool is easy to enter, but the drill bit is not provided with a core protecting device, so that the sample is easy to fall off during the drill lifting, and the sampling cannot be carried out; 3) when sampling in a soft stratum and a sand layer, a sand bailing barrel drilling tool with a hinge plate drill bit is easy to enter a sample, but is not easy to exit, and when the sample is withdrawn by hammering or water pressure, the integrity and continuity of the sample are damaged, and the stratum position where the sample is located cannot be accurately judged.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a geotechnical sampling device for geotechnical engineering investigation.
The invention provides a geotechnical sampling device for geotechnical engineering investigation, which comprises: a base, a jacket and a sampling rod core;
the middle part of the base is provided with a positioning opening, the outer sleeve is vertically arranged in the positioning opening, the upper end of the outer sleeve is provided with a limiting boss, a cavity extending downwards from the top is arranged in the outer sleeve, the side wall of the cavity is provided with a sampling window, the inner wall of the cavity is provided with a sample storage groove, and the bottom of the cavity is provided with a positioning screw hole;
the sampling rod core is vertically inserted into the outer sleeve from the top, a stud in threaded fit with the positioning screw hole is arranged at the lower end of the sampling rod core, a pushing blade is arranged on the outer wall of the sampling rod core, and the pushing blade corresponds to the sampling window and extends around the sampling rod core in a spiral mode.
Preferably, the overcoat outer wall is equipped with the external screw thread, the external screw thread is located spacing boss below and is located the sample window top, location opening inner wall be equipped with external screw thread complex internal thread.
Preferably, the spring is sleeved outside the jacket, the upper end of the spring abuts against the limiting boss, and the lower end of the spring abuts against the base.
Preferably, the outer wall of the sampling rod core is provided with a plurality of pushing blades which are sequentially arranged from top to bottom, the side wall of the outer sleeve is provided with a plurality of sampling windows and a plurality of sample storage grooves, and the sampling windows and the sample storage grooves are arranged at intervals.
Preferably, the top end of the sampling rod core is provided with a rotating bulge, and the rotating bulge is positioned above the limiting boss.
Preferably, the lower end of the outer sleeve is provided with an insertion part, and the outer diameter of the insertion part is gradually reduced from top to bottom.
According to the geotechnical sampling device for geotechnical engineering investigation, the middle part of the base is provided with the positioning opening, the outer sleeve is vertically arranged in the positioning opening, the upper end of the outer sleeve is provided with the limiting boss, the side wall of the outer sleeve is provided with the sampling window, and the inner wall of the cavity is provided with the sample storage groove; the sampling rod core is vertically inserted into the jacket from the top, a stud in threaded fit with the positioning screw hole at the bottom of the cavity is arranged at the lower end of the sampling rod core, a pushing blade is arranged on the outer wall of the sampling rod core, and the pushing blade corresponds to the sampling window and extends spirally around the sampling rod core. Geotechnical sampling device is used in geotechnical engineering investigation through above-mentioned optimal design fixes a position the sample location through the base, and during the sample, the thief rod core rotates, and in pushing away the sample storage groove that the sample window department pushed into the overcoat inner wall through pushing away the material blade, guarantee accurate mark sample location on the one hand, on the other hand when the overcoat was taken out, guarantee that the sample does not take place the secondary and scatter and pollute.
Drawings
Fig. 1 is a schematic structural view of a geotechnical sampling device for geotechnical engineering investigation provided by the invention.
Detailed Description
As shown in fig. 1, fig. 1 is a schematic structural view of a geotechnical sampling device for geotechnical engineering investigation according to the present invention.
Referring to fig. 1, the present invention provides a geotechnical sampling device for geotechnical engineering investigation, which comprises: the sampling rod comprises a base 1, an outer sleeve 2 and a sampling rod core 3;
the middle part of the base 1 is provided with a positioning opening, the outer sleeve 2 is vertically arranged in the positioning opening, the upper end of the outer sleeve 2 is provided with a limiting boss 4, a cavity extending downwards from the top is arranged in the outer sleeve 2, the side wall of the cavity is provided with a sampling window 5, the inner wall of the cavity is provided with a sample storage groove 6, and the bottom of the cavity is provided with a positioning screw hole;
the sampling rod core 3 is vertically inserted into the outer sleeve 2 from the top, the lower end of the sampling rod core 3 is provided with a stud 7 in threaded fit with the positioning screw hole, the outer wall of the sampling rod core 3 is provided with a pushing blade 8, and the pushing blade 8 is correspondingly arranged with the sampling window 5 and extends spirally around the sampling rod core 3.
In the concrete working process of the geotechnical engineering investigation geotechnical sampling device of the embodiment, firstly, the base is placed on the ground to be sampled, the lower end of the outer sleeve penetrates through the positioning opening to be inserted into sampling soil, the soil at the sampling position enters the sampling window of the outer sleeve, the sampling rod core rotates, under the matching of the screw hole and the stud, the sampling rod core moves along the vertical direction, and the soil at the sampling window is pushed into the material storage groove through the material pushing blade; after sampling, the sampling rod core and the outer sleeve are pulled out of the soil together.
In the embodiment, the geotechnical sampling device for geotechnical engineering investigation is provided with a positioning opening in the middle of a base, an outer sleeve is vertically arranged in the positioning opening, a limiting boss is arranged at the upper end of the outer sleeve, a sampling window is arranged on the side wall of the outer sleeve, and a sample storage groove is formed in the inner wall of a cavity; the sampling rod core is vertically inserted into the jacket from the top, a stud in threaded fit with the positioning screw hole at the bottom of the cavity is arranged at the lower end of the sampling rod core, a pushing blade is arranged on the outer wall of the sampling rod core, and the pushing blade corresponds to the sampling window and extends spirally around the sampling rod core. Geotechnical sampling device is used in geotechnical engineering investigation through above-mentioned optimal design fixes a position the sample location through the base, and during the sample, the thief rod core rotates, and in pushing away the sample storage groove that the sample window department pushed into the overcoat inner wall through pushing away the material blade, guarantee accurate mark sample location on the one hand, on the other hand when the overcoat was taken out, guarantee that the sample does not take place the secondary and scatter and pollute.
In a specific embodiment, the outer wall of the outer sleeve 2 is provided with an external thread, the external thread is positioned below the limiting boss 4 and above the sampling window 5, and the inner wall of the positioning opening is provided with an internal thread matched with the external thread; when the overcoat inserts in soil, rotate the overcoat for the overcoat descends through progressively with base screw-thread fit, and supplementary overcoat inserts soil, and guarantees overcoat insertion stability.
In order to improve the stability of the jacket during sampling, other specific embodiments of this embodiment further include spring 9, and spring 9 cover is established outside jacket 2, and spring 9 upper end is supported and is leaned on spacing boss 4 and the lower extreme supports and lean on base 1, and at jacket decline in-process, the spring passes through spacing boss and supports the jacket.
In other specific embodiments, the outer wall of the sampling rod core 3 is provided with a plurality of pushing blades 8 which are sequentially arranged from top to bottom, the side wall of the outer sleeve 2 is provided with a plurality of sampling windows 5 and a plurality of sample storage grooves 6, and the plurality of sampling windows 5 and the plurality of sample storage grooves 6 are arranged at intervals; soil of a plurality of different depths can be sampled simultaneously through a plurality of sampling windows to can not mutual interference.
In order to facilitate sampling of the sampling rod core, in a specific design mode, the top end of the sampling rod core 3 is provided with a rotating bulge 10, and the rotating bulge 10 is positioned above the limiting boss 4.
In order to facilitate the insertion of the jacket into the soil, the lower end of the jacket 2 is provided with an insertion portion, the outer diameter of which is gradually reduced from top to bottom.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a geotechnical sampling device for geotechnical engineering investigation which characterized in that includes: the sampling rod comprises a base (1), an outer sleeve (2) and a sampling rod core (3);
the middle part of the base (1) is provided with a positioning opening, the outer sleeve (2) is vertically arranged in the positioning opening, the upper end of the outer sleeve (2) is provided with a limiting boss (4), a cavity extending downwards from the top is arranged inside the outer sleeve (2), the side wall of the cavity is provided with a sampling window (5), the inner wall of the cavity is provided with a sample storage groove (6), and the bottom of the cavity is provided with a positioning screw hole;
in the vertical overcoat (2) of inserting in top was followed in sample rod core (3), sample rod core (3) lower extreme be equipped with location screw thread fit's double-screw bolt (7), sample rod core (3) outer wall is equipped with and pushes away material blade (8), pushes away material blade (8) and corresponds the setting with sampling window (5) and extend around sample rod core (3) spiral.
2. The geotechnical sampling device for geotechnical engineering investigation of claim 1, wherein, the outer wall of overcoat (2) is equipped with the external screw thread, the external screw thread is located spacing boss (4) below and is located sample window (5) top, location opening inner wall be equipped with external screw thread complex internal thread.
3. The geotechnical sampling device for geotechnical engineering investigation of claim 1, further comprising a spring (9), wherein the spring (9) is sleeved outside the jacket (2), the upper end of the spring (9) abuts against the limit boss (4) and the lower end abuts against the base (1).
4. The geotechnical sampling device for geotechnical engineering investigation of claim 1, wherein, the outer wall of sampling rod core (3) is equipped with a plurality of pushing blades (8) which are arranged from top to bottom in sequence, the side wall of jacket (2) is equipped with a plurality of sampling windows (5) and a plurality of sample storage grooves (6), and the plurality of sampling windows (5) and the plurality of sample storage grooves (6) are arranged at intervals.
5. The geotechnical sampling device for geotechnical engineering investigation of claim 1, wherein, the top of the sampling rod core (3) is provided with a rotary bulge (10), and the rotary bulge (10) is positioned above the limit boss (4).
6. The geotechnical sampling device for geotechnical engineering investigation of claim 1, wherein the lower end of the outer sleeve (2) is provided with an insert portion, and the outer diameter of the insert portion is gradually reduced from top to bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232906.1A CN111289292B (en) | 2020-03-28 | 2020-03-28 | Geotechnical sampling device for geotechnical engineering investigation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010232906.1A CN111289292B (en) | 2020-03-28 | 2020-03-28 | Geotechnical sampling device for geotechnical engineering investigation |
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| CN111289292A true CN111289292A (en) | 2020-06-16 |
| CN111289292B CN111289292B (en) | 2022-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029663A (en) * | 2021-04-12 | 2021-06-25 | 厦门理工学院 | Geotechnical engineering sampling device |
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| CN107462439A (en) * | 2017-08-09 | 2017-12-12 | 重庆辰央农业科技有限公司 | Suitable for the two-tube sampler of large volume agricultural product |
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| CN110398389A (en) * | 2019-06-18 | 2019-11-01 | 毕海民 | A kind of geotechnical engineering investigation ground sampler |
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| JPH11140858A (en) * | 1997-11-07 | 1999-05-25 | Kawaguchi Ace Kogyo Kk | Soil sampler and method for ground surveying using the same |
| JPH11303055A (en) * | 1998-04-20 | 1999-11-02 | Kawaguchi Ace Kogyo Kk | Rotary type soil sampler |
| JP2003321829A (en) * | 2002-04-30 | 2003-11-14 | Soiltec:Kk | Soil sampling method |
| JP2004339754A (en) * | 2003-05-14 | 2004-12-02 | Atec Yoshimura:Kk | Casing pipe type soil sampler |
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| CN204718826U (en) * | 2015-06-12 | 2015-10-21 | 唐山三孚硅业股份有限公司 | A kind of silica flour sampler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113029663A (en) * | 2021-04-12 | 2021-06-25 | 厦门理工学院 | Geotechnical engineering sampling device |
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| CN111289292B (en) | 2022-08-05 |
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Effective date of registration: 20230526 Address after: No. 11 Qilin Avenue, Xuanzhou District, Xuancheng City, Anhui Province, 242074 Patentee after: Xuancheng Wanpeng Enterprise Consulting Co.,Ltd. Address before: 242000 No. 11, Qilin Avenue, high tech Industrial Development Zone, Xuanzhou District, Xuancheng City, Anhui Province Patentee before: Xuancheng Xingjing survey and Design Co.,Ltd. |