CN102322233A - Cobble core drill bit - Google Patents
Cobble core drill bit Download PDFInfo
- Publication number
- CN102322233A CN102322233A CN201110240174A CN201110240174A CN102322233A CN 102322233 A CN102322233 A CN 102322233A CN 201110240174 A CN201110240174 A CN 201110240174A CN 201110240174 A CN201110240174 A CN 201110240174A CN 102322233 A CN102322233 A CN 102322233A
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- CN
- China
- Prior art keywords
- plate washer
- cobble
- core
- external splines
- internal spline
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a cobble core drill bit. A baffle plate shaft penetrates into a baffle plate hole and is arranged in a baffle plate wedge groove; an outer spline inner sleeve is glidingly connected with an inner spline outer sleeve; a lining ring is arranged between the inner sleeve and the outer sleeve; and a sealing ring is arranged in an inner sleeve ring groove. The core drill bit is a component and is serially connected between a core drill head and a long core tube by means of screw threads through the inner sleeve and the outer sleeve. When the cobble core drill bit drills, the top of a spline of the inner spline outer sleeve props against a right triangle side at one end of a baffle plate, the baffle plate rotates to make the other right triangle side adhere to the baffle plate wedge groove, the drill bit is equal to a section of circular tube, and cobbles can enter the long core tube. When a core is taken, a drill stem is lifted, the outer diameters of the drill bit and the long core tube are less than the outer diameter of the drill head, the resistance of sediment to the drill head is increased to overcome the tension of the sealing ring, the inner spline outer sleeve is lifted along with the long core tube, the bottom of the spline is separated from the top of the inner sleeve, with the lifting of the outer sleeve, the open ring lining ring pushes the lower side of the right triangle side of the baffle plate, the baffle plate is rotated to a designed position and is stopped, and the cobbles entering the long core tube are positioned until being lifted to the ground.
Description
Technical field
The present invention relates to a kind of cobble core bit, particularly a kind of core bit that is used under the geo-logical terrain condition of bursting apart belongs to probing and pore-forming field.
Background technology
The geological prospecting main task is to obtain real core sample, so that estimate the mineral resources reserves of being explored.Useful mineral products all appear in fragmentation, weakness, the fissurity rock under a lot of situation, and at this point under the layer condition, existing core bit exploration is crept into, and the core in the core barrel is come off, and is difficult to satisfy actual geological prospecting requirement.
Simultaneously at building pile foundation, geothermal heat pump air-conditioner pore-forming, obtain aspect such as underground water sink wells, we possibly meet with geological stratifications such as the broken massif that bursts apart, riverbed, valley floor, building backfill.Existing core bit and well-rig are difficult to rubble, cobble, building backfill with this geology state and take out and form required work deep hole.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art, the present invention provides a kind of cobble core bit (cobble material, unstable representative).This device is when creeping into, and cobble can be smooth and easy through drill bit, drilling tool of the present invention, gets into long core pipe; And when upwards carrying long core pipe, through the device action of drilling tool of the present invention, baffle plate opens automatically cobble is barred from the long core pipe, and the cobble location is taken out at every turn.
Realize that technical scheme of the present invention is: external threading is connected with the coring bit screw thread in a kind of cobble core bit, core bit; After the plate washer axle penetrates the plate washer axis hole, overlap in being installed in the plate washer wedge groove; Cover is connected with the longitudinal sliding motion of internal spline overcoat in the external splines; Cover did not have the spline position with overcoat in the open loop lining ring was installed on; The inner sleeve groove is installed O-ring seals, the O-ring seals outside and the position driving fit of internal spline overcoat bottom hole; Sleeve thread is connected with long core gas thread.
Said cobble core bit can have a global facility of one's own, and external threading and sleeve thread serial connection are assemblied in the middle of existing coring bit and the existing long core pipe in relying on.
External threading can cooperate with existing coring bit by existing specification coring bit thread standard processing in said.Sleeve thread can cooperate with existing long core pipe by the existing long core gas thread of specification standards, reduces overlapping investment.
Said plate washer is that elastomeric material is made, and is the bell crank lever structure, and fulcrum hole penetrates the plate washer axle, and in each plate washer wedge groove of cover, plate washer axle two ends all are fixed in the plate washer wedge groove transverse notch in being installed on respectively.
Said plate washer can make cobble smooth and easy through getting in the long core pipe around axle motion and the parallel applying of the interior vertical notch of cover plate washer wedge groove.
Said plate washer can also rotate in design angle around axle, and the braking cobble glides along long core pipe, stops that cobble breaks away from long core pipe.Plate washer rotates in design angle and can not break away from interior cover.
Cover is connected with the longitudinal sliding motion of internal spline overcoat in the said external splines, through spline and helicitic texture effect, transmits the drilling rod rotary torsion to drill bit, implements cobble geology is cut.Withstand two spline upper and lower end faces when creeping into, and transmits the rig pressure at right angle to drill bit.Simultaneously internal spline overcoat spline lower surface is pressed on face upper end, plate washer right angle, makes rectangulate barrier vertical plane and the parallel applying of interior cover plate washer wedge groove, by elastic construction adjusting play error voluntarily, makes in the long core pipe of cobble entering.
Cover did not have the spline position with overcoat in said open loop lining ring was installed on, and fit is fixedly connected through fixing hole with overcoat, was slidingly connected with interior cover, axially can not separate fully after fixing two splines are engaging-in.When promoting long core pipe, open loop lining ring that is fixedly connected with overcoat and interior cover produce and slide, in design gaps; Open loop lining ring upper surface promotes right-angle structure plate washer horizontal ends lower plane, and plate washer sways, and the plate washer vertical end is to central motion; Plate washer lower end cobble is pushed by plate washer elasticity, promotes the space that produces and increases, and the space is formed at the drill bit bottom; In conjunction with the descending gravity of top cobble, plate washer continues operation, allows angle to stop to designing; Thereby the continuation that stops cobble is descending, it is stabilized in the long core pipe, until promoting upper ground surface.
O-ring seals is installed, the O-ring seals outside and the position driving fit of internal spline overcoat bottom hole in the said inner sleeve groove.One of which can prevent that silt from getting into core bit internal influence mechanism action, and it two is a frictional resistance between the overcoat in increasing, keep when rig is descending the plate washer perpendicular end surface with in put plate washer wedge groove and fit.
Advantage of the present invention is: reasonable in design, simple in structure, it is reliable and stable to get core, and cost of production is low; Can be made into the independent drilling tool that cooperates with the coring bit of existing all size, long core pipe, reduce overlapping investment; Can develop simultaneously becomes the major diameter core bit, fills up the blank of the shape geology major diameter core bit that bursts apart.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the state cut-away view that creeps into of the present invention.
Fig. 2 is a lifting state cut-away view of the present invention
Fig. 3 is part shape figure of the present invention
Among the figure, 1. interior external threading, 2. cover, 3. inner sleeve groove, 4. open loop lining ring, 5. fixing hole, 6. plate washer axle, 7. plate washer, 8. plate washer wedge groove, 9. internal spline overcoat, 10. sleeve thread in the external splines.
The specific embodiment:
The bottom of external threading 1 can connect existing coring bit in the state cobble core bit that creeps into as shown in Figure 1, drilling tool, and the top of drilling tool sleeve thread 10 can connect existing long core pipe.Plate washer axle 6 inserts in plate washer 7 axis holes, and the plate washer wedge groove 8 that reinstalls cover 2 in the external splines is interior fixing.Open loop lining ring 4 is installed on no spline position between interior cover 2 of external splines and the internal spline overcoat 9; Inner sleeve groove 3 O-ring seals of packing into; The O-ring seals outside and the 9 bottom hole position driving fits of internal spline overcoat; Through fixing hole 5 open loop lining ring 4 is fixed on the internal spline overcoat 9, is slidingly matched with cover 2 in the external splines.
When using the cobble core bit to creep into, cover 2 tops prop up internal spline overcoat 9 splines bottom in the external splines, transmit the drilling pressure that is provided by rig.Spline engagement in internal spline overcoat 9 and the external splines between the cover 2 is transmitted the rotary torsion that is provided by rig.Internal spline overcoat 9 spline tops prop up plate washer 7 one end right-angle sides; Compressing plate washer 7 turns to another right-angle side around plate washer axle 6 and fits in plate washer wedge groove 8; The effect of O-ring seals tension force, location internal spline overcoat 9 and interior 2 the relative position that overlaps of external splines, cobble core bit integral body is equal to one section pipe; Cobble is got in the long core pipe smoothly, and state is as shown in Figure 1.
When using the cobble core bit to get core, rotary torsion and drilling pressure that rig provides stop, and rig upwards promotes; Because core bit and long core external diameter of pipe are less than outside diameter, core bit and long core bore are greater than the drill bit internal diameter, and the silt detrital deposit increases the frictional resistance to drill bit; Its resistance overcomes O-ring seals tension force, and internal spline overcoat 9 promotes in company with long core pipe, and leave with the interior cover of external splines 2 top portion internal spline overcoat 9 splines bottom; Open loop lining ring 4 companions of being fixed on the internal spline overcoat 9 promote, and to the design gaps position, promote below the plate washer 7 one end right-angle sides above the open loop lining ring 4; Plate washer 7 rotates around plate washer axle 6, makes another right-angle side break away from entad motion of plate washer wedge groove 8, to the cobble generation elastic thrust of plate washer 7 bottoms; Carry out the drill bit bottom with lifting and produce the space, the cobble under the plate washer 7 is return the stratum under plate washer 7 elastic thrusts, cobble action of gravity, and plate washer 7 bottom resistances disappear; From gravity and top cobble gravity, promote plate washer 7 continue around plate washer axle 6 turn to design attitude and in by external splines the plate washer wedge groove 8 of cover 2 stop and stop that plate washer 7 motions stop to make the cobble downward movement to stop; The cobble that gets into long core pipe and cobble core bit plate washer 7 tops is positioned; Promote and promote simultaneously with long core pipe, until being promoted to ground, state is as shown in Figure 2.
Carry out with the circulation of creeping into and promoting, the cobble core bit is promoted to ground with cobble again and again, accomplishes the work that cobble is got core and pore-forming.
Claims (6)
1. the bottom of external threading 1 accesses the core drill bit, the top spreading core pipe of drilling tool sleeve thread 10 in cobble core bit, drilling tool; Plate washer axle 6 is installed in plate washer 7 holes, reinstalls in the external splines to fix in the plate washer wedge groove on the cover 28, and lining ring 4 is installed on cover 2 and internal spline overcoat 9 spline thickness space in the external splines; The sealing ring outside and 9 driving fits of internal spline overcoat on the inner sleeve groove 3; Lining ring 4 is fixed on the internal spline overcoat 9, it is characterized in that: on the cover 2 plate washer wedge groove 8 is arranged in the external splines, plate washer wedge groove 8 can be installed plate washer axle 6; Can pass plate washer 7; Can also make in the long limits of plate washer 7 fit in, the plate washer 7 of bell crank lever structure can be rotated around plate washer axle 6, overlap 2 and can not break away from external splines in.
2. according to the said cobble core bit of claim 1; It is characterized in that: move in the external splines spline thickness space of cover 2 and internal spline overcoat 9 of plate washer 7 minor faces of bell crank lever structure; Cover 2 in the external splines is passed on the plate washer 7 long limits of bell crank lever structure, moves and in plate washer wedge groove 8 with in the external splines, overlaps 2 circle central spaces.
3. according to the said cobble core bit of claim 1; It is characterized in that: lining ring 4 is installed on cover 2 and internal spline overcoat 9 spline thickness space in the external splines; Fixing with internal spline overcoat 9, slide with cover in the external splines 2, be used to control the spline movement clearance first; The interior cover 2 of internal spline overcoat 9 and external splines is not broken away from, and the plate washer 7 that is used to simultaneously promote the bell crank lever structure is around 6 rotations of plate washer axle.
4. according to the said cobble core bit of claim 1; It is characterized in that: cover plane, 2 top offsets and can transmit the rig drilling pressure to drill bit in internal spline overcoat 9 baseplanes and the external splines; Cover 2 spline engagement can be transmitted the rig rotary torsion to drill bit in internal spline overcoat 9 splines and the external splines, on internal spline overcoat 9 splines on plane and plate washer 7 minor faces plane prop up; In control plate washer 7 long limit applying plate washer wedge groove 8 grooves, the plane clearance error is adjusted by plate washer 7 elasticity.
5. according to the said cobble core bit of claim 1; It is characterized in that: the sealing ring outside and 9 driving fits of internal spline overcoat on the inner sleeve groove 3; Sealing ring frictional force control drilling tool repeats to extract the cobble process; Overlap plane, 2 top when making downward movement in internal spline overcoat 9 baseplanes and the external splines and offset, guarantee to prevent to influence in the silt access to plant mechanism action simultaneously in plate washer 7 long limit applying plate washer wedge grooves 8 grooves.
6. according to the said cobble core bit of claim 1, it is characterized in that: the bottom of external threading 1 accesses the core drill bit in the drilling tool, the top spreading core pipe of drilling tool sleeve thread 10, and core bit can be made becomes individual components, provides the expansion of prior art to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110240174A CN102322233A (en) | 2011-08-19 | 2011-08-19 | Cobble core drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110240174A CN102322233A (en) | 2011-08-19 | 2011-08-19 | Cobble core drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102322233A true CN102322233A (en) | 2012-01-18 |
Family
ID=45450051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110240174A Pending CN102322233A (en) | 2011-08-19 | 2011-08-19 | Cobble core drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443061A (en) * | 2014-09-28 | 2016-03-30 | 中国石油化工集团公司 | Lower end pressure enclosing mechanism of coring tool with large drift diameter |
| CN108843263A (en) * | 2018-08-13 | 2018-11-20 | 谭雄卫 | Orient coring automatic localization device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2076837A (en) * | 1936-02-15 | 1937-04-13 | Globe Oil Tools Co | Core catcher |
| DE3314689C1 (en) * | 1983-04-22 | 1984-04-19 | Alfred 7440 Nürtingen Waldner | Device for sinking a terrestrial-heat-collector probe in the earth |
| US4607710A (en) * | 1984-08-31 | 1986-08-26 | Norton Christensen, Inc. | Cammed and shrouded core catcher |
| SU1751292A1 (en) * | 1990-11-29 | 1992-07-30 | Всесоюзный Научно-Исследовательский Институт Буровой Техники | Core-lifter |
| CN101899955A (en) * | 2009-05-27 | 2010-12-01 | 长江大学 | Cord type coring tool for coal seams |
| CN202194603U (en) * | 2011-08-19 | 2012-04-18 | 禹畅 | Cobble core drill |
-
2011
- 2011-08-19 CN CN201110240174A patent/CN102322233A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2076837A (en) * | 1936-02-15 | 1937-04-13 | Globe Oil Tools Co | Core catcher |
| DE3314689C1 (en) * | 1983-04-22 | 1984-04-19 | Alfred 7440 Nürtingen Waldner | Device for sinking a terrestrial-heat-collector probe in the earth |
| US4607710A (en) * | 1984-08-31 | 1986-08-26 | Norton Christensen, Inc. | Cammed and shrouded core catcher |
| SU1751292A1 (en) * | 1990-11-29 | 1992-07-30 | Всесоюзный Научно-Исследовательский Институт Буровой Техники | Core-lifter |
| CN101899955A (en) * | 2009-05-27 | 2010-12-01 | 长江大学 | Cord type coring tool for coal seams |
| CN202194603U (en) * | 2011-08-19 | 2012-04-18 | 禹畅 | Cobble core drill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443061A (en) * | 2014-09-28 | 2016-03-30 | 中国石油化工集团公司 | Lower end pressure enclosing mechanism of coring tool with large drift diameter |
| CN105443061B (en) * | 2014-09-28 | 2017-10-10 | 中国石油化工集团公司 | Big orifice coring tool lower end pressure seal mechanism |
| CN108843263A (en) * | 2018-08-13 | 2018-11-20 | 谭雄卫 | Orient coring automatic localization device |
| CN108843263B (en) * | 2018-08-13 | 2024-05-28 | 谭雄卫 | Automatic locating device for directional coring |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120118 |