CN107677500B - Binary automatic coupling formula ocean columnar sampler drill bit - Google Patents
Binary automatic coupling formula ocean columnar sampler drill bit Download PDFInfo
- Publication number
- CN107677500B CN107677500B CN201710818205.4A CN201710818205A CN107677500B CN 107677500 B CN107677500 B CN 107677500B CN 201710818205 A CN201710818205 A CN 201710818205A CN 107677500 B CN107677500 B CN 107677500B
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- Prior art keywords
- clutch
- hole
- section
- inverted cone
- square groove
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Classifications
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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 kind of binary automatic coupling formula ocean columnar sampler drill bits, including the automatic opening and closing flap component of upper section clutch, lower section clutch and two, when lower section clutch stress is downwardly away from upper section clutch, two automatic opening and closing flap component closures, when lower section clutch stress upwards close to upper section clutch when, two automatic opening and closing flap components open.Drill bit of the invention, pass through the linkage of the automatic opening and closing flap component of upper section clutch, lower section clutch and two, constitute the having a double meaning card for blocking column shaped deposit sample, it can effectively solve the problem that sediment sample leakage problem existing for existing monomer clutch drill bit or spring flap formula drill bit, the sample of acquisition more fully preserves primary deposit thickness and micro-structure etc., improve the acquisition rate and sampling operation efficiency of column shaped deposit, handling are simple and convenient to operate, it can be widely used in gravity sampler or gravity piston sampler, with good application prospect.
Description
Technical field
The present invention relates to bottom sediment sample devices fields, and in particular to a kind of binary automatic coupling formula ocean column is adopted
Sample device drill bit.
Background technique
Currently, have miscellaneous bottom sediment columnar sampler both at home and abroad, but either gravity sampler is still
Gravity piston sampler (piston type gravity sampler), the drill bit of use are all monomer clutch drill bit or spring flap formula (pawl spring
Formula) drill bit.It is marine it was verified that using monomer clutch drill bit or spring flap formula drill bit sampler, there are obvious shortcoming, when from
When submarine sedimentary strata is drawn up gravity core pipe, monomer clutch drill bit or spring flap formula drill bit cannot be sealed effectively full of heavy
The bushing pipe bottom of product object, when constantly rising with winch from seabed, leakage downwards occurs for the deposit in bushing pipe, influences to sample matter
Deposit in amount or even bushing pipe is completely hollow, it has to re-start sampling.In the case where at sea having stormy waves, more seem
It is very laborious, time-consuming.Further, since monomer clutch drill bit or spring flap formula drill bit not can effectively prevent deposit leakage, adopt
The primary deposit thickness of the column shaped deposit sample of collection, micro-structure etc. are destroyed, and are caused sampling quality low, are influenced sample analysis
With the announcement of problem in science.
Summary of the invention
The purpose of the present invention is to provide a kind of structures, and binary automatic coupling formula ocean column simple, that plugging effect is good is adopted
Sample device drill bit can effectively improve the acquisition quality and collecting efficiency of ocean column shaped deposit sample.
To achieve the above object, the technical scheme is that
A kind of binary automatic coupling formula ocean columnar sampler drill bit, including upper section clutch, lower section clutch and two
A automatic opening and closing flap component, the upper section clutch and lower section clutch are hollow columnar structures, in which:
The outer wall of the upper section clutch is by first cylindrical section on top, the first inverted cone section of middle and upper part, middle and lower part
Second inverted cone section and the third inverted cone section of lower part composition, the first inverted cone section major diameter are equal to outside the first cylindrical section
Diameter, path are equal to the second inverted cone section major diameter, and the third inverted cone section major diameter is equal to the second inverted cone section path;
The inner wall of the upper section clutch is made of the threaded hole on top, the intermediate first through hole for crossing sample hole and lower part,
The first through hole hole wall is radially uniformly distributed multiple first square grooves along two the first slot groups, the first slot group is axially arranged with
It constitutes;
The outer wall of the lower section clutch is by the 5th of second cylindrical section on top, the 4th inverted cone section at middle part and lower part
Inverted cone section composition, the 4th inverted cone section major diameter are greater than the second cylindrical section outer diameter, constitute an annular boss in engaging portion, small
Diameter is equal to the 5th inverted cone section major diameter;
The inner wall of the lower section clutch is made of the third through-hole of second through-hole on top and lower part, second through-hole
Hole wall is that radially uniformly distributed multiple second square grooves are constituted along two the second slot groups, the second slot group is axially arranged with;
The automatic opening and closing flap component is made of multiple flaps, and the flap includes swing rod and wedge-shaped elastic slice, the pendulum
Bar one end is equipped with hinge hole, and the other end is fixed on wedge-shaped elastic slice, and the wedge shape elastic slice is sector, and radius is slightly less than the second through-hole
Radius, central angle be equal to the second through-hole circumference divided by flap number;
The first square groove in the first slot group, the second square groove in the second slot group and the leaf in automatic opening and closing flap component
The quantity of valve is correspondingly arranged, and the second cylindrical section of the lower section clutch is set in the first through hole of upper section clutch, described
The length of second square groove is greater than the length of the first square groove, and width is equal to the width of the first square groove, first square groove and second
The axis parallel of the length direction of square groove and the drill bit;
The wedge shape elastic slice is placed in the second through-hole, after the swing rod sequentially passes through the second square groove and the first square groove, is led to
The hinged of hinge hole and the wirerope that is mounted on the first square groove is crossed, so that lower section clutch is movably arranged on upper section clutch
On, when lower section clutch stress is downwardly away from upper section clutch, two automatic opening and closing flap component closures, when lower section clutch
Stress upwards close to upper section clutch when, two automatic opening and closing flap components open, and the hole that automatic opening and closing flap component opens
Diameter is equal to the internal diameter of third through-hole.
Compared with prior art, the beneficial effects of the present invention are:
By the linkage of the automatic opening and closing flap component of upper section clutch, lower section clutch and two, it is heavy to constitute closure column
The having a double meaning card of product object sample, can effectively solve the problem that sediment sample existing for existing monomer clutch drill bit or spring flap formula drill bit
Leakage problem, for the column shaped deposit sample length of harvest than original long 2-5m, sample more fully preserves primary deposit thickness
Degree and micro-structure etc., the acquisition rate and sampling operation efficiency, handling for improving column shaped deposit are simple and convenient to operate, and can be used extensively
In gravity sampler or gravity piston sampler, with good application prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of upper section clutch of the invention;
Fig. 2 is the structural schematic diagram of lower section clutch of the invention;
Fig. 3 is the structural schematic diagram of flap of the invention;
Fig. 4 is the structural schematic diagram of automatic opening and closing flap component of the invention;
Fig. 5 is the assembling schematic diagram of binary automatic coupling formula ocean columnar sampler drill bit of the invention;
Description of symbols:
1- upper section clutch, the first cylindrical section of 11-, 12- the first inverted cone section, 13- the second inverted cone section, 14- third are fallen
Conical section, 15- threaded hole, 16- cross sample hole, 17- first through hole, the first square groove of 18-;
2- lower section clutch, the second cylindrical section of 21-, the 4th inverted cone section of 22-, the 5th inverted cone section of 23-, 24- second are logical
Hole, 25- third through-hole, the second square groove of 26-;
3- flap, 31- swing rod, 32- wedge shape elastic slice, 33- hinge hole;
4- wirerope.
Specific embodiment
The contents of the present invention are described in further details with reference to the accompanying drawings and detailed description.
Embodiment 1:
As shown in Figures 1 to 5, a kind of binary automatic coupling formula ocean columnar sampler drill bit, mainly by upper section clutch
1, lower section clutch 2 and two automatic opening and closing flap components are constituted.
The hollow columnar structures that upper section clutch 1 is process by pressure-resistant stainless steel column, outer wall are justified by the first of top
Shell of column 11, the first inverted cone section 12 of middle and upper part, the second inverted cone section 13 of middle and lower part and the third inverted cone section 14 of lower part
Composition.Wherein, 12 major diameter of the first inverted cone section is equal to 11 outer diameter of the first cylindrical section, and path is equal to 13 major diameter of the second inverted cone section,
14 major diameter of third inverted cone section is equal to 13 path of the second inverted cone section, and the design that this outer diameter continuously reduces can subtract to the maximum extent
Few resistance of the drill bit to seawater when the dive of seabed.
Threaded hole 15, intermediate first through hole 17 structure of crossing sample hole 16 and lower part of the inner wall of upper section clutch 1 by top
At threaded hole 15 with gravity core pipe for connecting, and first through hole 17 is used for and lower section clutch 2 connects.In first through hole 17
Hole wall is that 8 radially uniformly distributed the first square grooves 18 are constituted along two the first slot groups, the first slot group is axially arranged with.
Lower section clutch 2 is also the hollow columnar structures that are process by pressure-resistant stainless steel column, and outer wall is by the of top
5th inverted cone section 23 of two cylindrical sections 21, the 4th inverted cone section 22 at middle part and lower part forms.Wherein, the 4th inverted cone section 22
Major diameter is greater than 21 outer diameter of the second cylindrical section, an annular boss is constituted in engaging portion, when upper section clutch 1 and lower section clutch 2 lean on
When close, 1 lower end of upper section clutch is contradicted on annular boss.4th inverted cone section 22 and the 5th inverted cone section 23 are referred to as drill bit
Structure, this structure not only can be reduced the resistance of seawater, but also can penetrate the deeper sedimentary in seabed.
The inner wall of lower section clutch 2 is made of the third through-hole 25 of second through-hole 24 on top and lower part, in the second through-hole
24 hole walls are that 8 radially uniformly distributed the second square grooves 26 are constituted along two the second slot groups, the second slot group is axially arranged with.
Automatic opening and closing flap component is made of 8 flaps 3, and every piece of flap 3 is made of swing rod 31 and wedge-shaped elastic slice 32, is put
31 one end of bar is equipped with hinge hole 33, and the other end is fixed on wedge-shaped elastic slice 32, and wedge-shaped elastic slice 32 is sector, and radius is slightly less than second
The radius of through-hole 24, central angle are equal to the circumference of the second through-hole 24 divided by the number of flap 3.
Second cylindrical section 21 of lower section clutch 2 is set in the first through hole 17 of upper section clutch 1, and wedge-shaped elastic slice 32 is pacified
It is put in the second through-hole 24, after swing rod 31 sequentially passes through the second square groove 26 and the first square groove 18, hinge hole 33 and is mounted on the
Wirerope 4 on one square groove 18 is hinged.Wherein, the length of the second square groove 26 is greater than the length of the first square groove 18, and width is equal to
The width of first square groove 18, the axis parallel of the length direction and drill bit of the first square groove 18 and the second square groove 26.In this way, upper section from
Clutch 1 and lower section clutch 2 are coupled by the first square groove 18, the second square groove 26, flap 3 and wirerope 4, upper section clutch
Device 1 and lower section clutch 2 cannot be rotated at random, and can but be stretched automatically within the scope of length difference of first square groove 18 with the second square groove 26
Contracting.When upper section clutch 1 and lower section clutch 2 are stretched because of gravity, 8 flaps 3 are closed automatically, 8 wedge-shaped elastic slices 32
The section for just constituting the second through-hole 24, blocks deposit with this, when upper section clutch 1 and lower section clutch 2 are extra large because contacting
When bottom is shunk, 8 flaps 3 are opened automatically, and 8 wedge-shaped elastic slices 32 open the aperture that the aperture formed is equal to third through-hole 25, are made
Deposit passes through drill bit and enters bushing pipe, achieve the purpose that sampling.
When installation, first by the first through hole 17 of the second cylindrical section 21 alignment upper section clutch 1 of lower section clutch 2, gently
It gently up pushes away, so that two group of first square groove 18 of upper section clutch 1 and two group of second square groove 26 of lower section clutch 2 are completely right
It answers, upper section clutch 1 and lower section clutch 2 is enable to couple, then flap 3 is sequentially placed into the second through-hole 24, will be put
After bar 31 sequentially passes through the second square groove 26 and the first square groove 18, pass through the hinge hole 33 on swing rod 31 for 8 flaps with wirerope 4
3 series windings, are finally welded on 1 outer wall of upper section clutch for wirerope 2, realize and fix, and repeat second step to a last step, complete double
The assembling of body automatic coupling formula ocean columnar sampler drill bit.Externally threaded gravity core pipe lower end and upper section clutch will be machined with
The threaded hole 15 of device 1 connects, be inserted into gravity core pipe work chamber after connecting it is matched hold sample plastic liner, then pass through branch
Bearing block is connect by the components such as frame with probe tube, then a complete binary automatic coupling formula ocean columnar sampler device
(hereinafter referred to as device) is constituted.
Implement sampling when, binary automatic coupling formula ocean columnar sampler by the winch wirerope on ship slowly vertically to
Seabed dive, when dive under the effect of gravity, 2 Automatic-drawing of upper section clutch 1 and lower section clutch, two automatic opening and closing flaps
Component is closed automatically.Since gravity core pipe and detector intersect suspension on a steel cord, wherein the steel of suspension gravity core pipe
Cord is random length (can be with sea water advanced variation), and intersects the top for hooking whole device of suspension on a steel cord
End, the upper wirerope for fastening connection detector again of this hook, the detector that this root wirerope ties down are set away from whole device bottom
Fixed height can be to have tens of rice to hundreds of meters (can be depending on sea water advanced).When whole device is vertical to marine bottom rapidly
When dive, detector touches the moment of submarine surface water Yu interface deposit first, so that intersecting suspension on a steel cord whole
A device overcomes the resistance of seawater from upper Automatic-falling, the height that the whole device of Automatic-falling is set from this at this time is linked up with,
Accelerated in a manner of freely falling body to seabed dive.When lower section clutch 2 contacts seabed first, will move upwards, in turn
Two sections clutch is caused to shrink, the opening of contraction two automatic opening and closing flap components of control of clutch, so that heavy
Product object passes through drill bit, into bushing pipe, to achieve the purpose that sampling.Accelerating to during the dive of seabed, by pressure-bearing pouring weight and
The gravity of its device itself penetrates deep layer bottom sediment by the drill bit of lower section clutch 2, until cannot penetrate again for
Only, the plastic liner at this moment in gravity core pipe work chamber has had been filled with deposit.When the winch on ship be lifted up it is arbitrarily long
The moment of the wirerope of degree, two sections clutch Automatic-drawing, the automatic opening and closing flap component contraction opened originally are closed simultaneously
The bottom that deposit plastic liner is had been filled in upper section clutch 2 is tightly blocked, so that extracting vertically upward from seabed entire
When device, it is unlikely to miss obtained deposit from the bottom of the plastic liner clasped, realizes from seabed and acquire deeper product
Layer, more complete, longer column shaped deposit.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (1)
1. a kind of binary automatic coupling formula ocean columnar sampler drill bit, which is characterized in that including upper section clutch (1), lower section
Clutch (2) and two automatic opening and closing flap components, the upper section clutch (1) and lower section clutch (2) are hollow posts
Shape structure, in which:
The outer wall of the upper section clutch (1) by first cylindrical section (11) on top, middle and upper part the first inverted cone section (12), in
Second inverted cone section (13) of lower part and third inverted cone section (14) composition of lower part, the first inverted cone section (12) major diameter
Equal to the first cylindrical section (11) outer diameter, path is equal to second inverted cone section (13) major diameter, third inverted cone section (14) major diameter
Equal to second inverted cone section (13) path;
The inner wall of the upper section clutch (1) is led to by the first of the threaded hole (15) on top, intermediate sample hole (16) excessively and lower part
Hole (17) is constituted, and first through hole (17) hole wall is radially equal along two the first slot groups, the first slot group is axially arranged with
Multiple first square grooves (18) of cloth are constituted;
The outer wall of the lower section clutch (2) by second cylindrical section (21) on top, the 4th inverted cone section (22) at middle part and under
The 5th inverted cone section (23) in portion forms, and the 4th inverted cone section (22) major diameter is greater than the second cylindrical section (21) outer diameter, is tying
Conjunction portion constitutes an annular boss, and path is equal to the 5th inverted cone section (23) major diameter;
The inner wall of the lower section clutch (2) is made of the third through-hole (25) of second through-hole (24) on top and lower part, described
Second through-hole (24) hole wall is radially uniformly distributed multiple second square grooves along two the second slot groups, the second slot group is axially arranged with
(26) it constitutes;
The automatic opening and closing flap component is made of multiple flaps (3), and the flap (3) includes swing rod (31) and wedge-shaped elastic slice
(32), described swing rod (31) one end is equipped with hinge hole (33), and the other end is fixed on wedge-shaped elastic slice (32), the wedge shape elastic slice
It (32) is sector, radius is slightly less than the radius of the second through-hole (24), and central angle is equal to the circumference of the second through-hole (24) divided by flap
(3) number;
In the second square groove (26) and automatic opening and closing flap component in the first square groove (18), the second slot group in the first slot group
The quantity of flap (3) be correspondingly arranged, the second cylindrical section (21) of the lower section clutch (2) is set in upper section clutch (1)
First through hole (17) in, the length of second square groove (26) is greater than the length of the first square groove (18), and width is equal to first
The length direction of the width of square groove (18), first square groove (18) and the second square groove (26) and the axis parallel of the drill bit;
The wedge shape elastic slice (32) is placed in the second through-hole (24), and the swing rod (31) sequentially passes through the second square groove (26) and the
After one square groove (18), by the hinged of hinge hole (33) and the wirerope (4) being mounted on the first square groove (18) so that lower section from
Clutch (2) is movably arranged on upper section clutch (1), when lower section clutch (2) stress is downwardly away from upper section clutch (1),
Two automatic opening and closing flap components closures, when lower section clutch (2) stress upwards close to upper section clutch (1) when, two are automatic
Opening and closing flap component opens, and the aperture of automatic opening and closing flap component opening is equal to the internal diameter of third through-hole (25).
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CN201710818205.4A CN107677500B (en) | 2017-09-12 | 2017-09-12 | Binary automatic coupling formula ocean columnar sampler drill bit |
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CN201710818205.4A CN107677500B (en) | 2017-09-12 | 2017-09-12 | Binary automatic coupling formula ocean columnar sampler drill bit |
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CN107677500B true CN107677500B (en) | 2019-11-12 |
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CN113532926A (en) * | 2021-08-18 | 2021-10-22 | 杜立婷 | Soil pollution detection pretreatment trolley and use method thereof |
CN113866268A (en) * | 2021-09-16 | 2021-12-31 | 中国科学院南海海洋研究所 | Acoustic vertical and radial layered measurement device for seabed sediment |
CN114088453A (en) * | 2021-11-19 | 2022-02-25 | 十九冶成都建设有限公司 | Sand and stone sample collecting cylinder |
CN115184073B (en) * | 2022-09-09 | 2022-12-20 | 深圳市勘察研究院有限公司 | Rock core sampling device for geotechnical engineering |
CN115901340A (en) * | 2023-01-04 | 2023-04-04 | 中国科学院南海海洋研究所 | Novel undisturbed marine sediment sampling tool bit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101162187A (en) * | 2007-11-15 | 2008-04-16 | 南开大学 | Sediment columnar sampler |
CN202188974U (en) * | 2011-08-22 | 2012-04-11 | 天津市环境保护科学研究院 | Gravity type cylindrical sediment stratifying and sampling device |
CN105424406A (en) * | 2015-12-15 | 2016-03-23 | 武汉浩瀚机电设备有限公司 | Visible double-row columnar sampler for deep-sea sampling |
WO2016070252A1 (en) * | 2014-11-03 | 2016-05-12 | Universidad Federal Do Rio De Janeiro | Sampling device for soft and very soft soils with cable-actuated jaws and soil flow between the jaws and the sampling tube |
CN206132433U (en) * | 2016-09-06 | 2017-04-26 | 天津渤海水产研究所 | Water sample and bed mud collection system at bottom water layer coupling interface |
-
2017
- 2017-09-12 CN CN201710818205.4A patent/CN107677500B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101162187A (en) * | 2007-11-15 | 2008-04-16 | 南开大学 | Sediment columnar sampler |
CN202188974U (en) * | 2011-08-22 | 2012-04-11 | 天津市环境保护科学研究院 | Gravity type cylindrical sediment stratifying and sampling device |
WO2016070252A1 (en) * | 2014-11-03 | 2016-05-12 | Universidad Federal Do Rio De Janeiro | Sampling device for soft and very soft soils with cable-actuated jaws and soil flow between the jaws and the sampling tube |
CN105424406A (en) * | 2015-12-15 | 2016-03-23 | 武汉浩瀚机电设备有限公司 | Visible double-row columnar sampler for deep-sea sampling |
CN206132433U (en) * | 2016-09-06 | 2017-04-26 | 天津渤海水产研究所 | Water sample and bed mud collection system at bottom water layer coupling interface |
Non-Patent Citations (1)
Title |
---|
关于几种海底柱状取样器的分析和研制方向的探讨;莫文治;《海洋技术》;19841231(第2期);第57-68页 * |
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