CN203847003U - Rotating ejecting type variable-diameter drill bit - Google Patents
Rotating ejecting type variable-diameter drill bit Download PDFInfo
- Publication number
- CN203847003U CN203847003U CN201420218575.6U CN201420218575U CN203847003U CN 203847003 U CN203847003 U CN 203847003U CN 201420218575 U CN201420218575 U CN 201420218575U CN 203847003 U CN203847003 U CN 203847003U
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- China
- Prior art keywords
- wall
- boss
- triangular prism
- top connection
- rotary sleeve
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- Expired - Lifetime
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- 238000005520 cutting process Methods 0.000 claims abstract description 39
- 241001633942 Dais Species 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000036346 tooth eruption Effects 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to the technical field of variable-diameter geological drill bit devices, in particular to a rotating ejecting type variable-diameter drill bit. The drill bit comprises an upper joint, a movable sleeve, a rotating sleeve, a lower joint and a compressing spring, an upper step and a lower step are integrally and fixedly arranged on the outer wall of the upper portion of the upper joint from top to bottom, the outer diameter of the upper step and the outer diameter of the lower step are sequentially reduced, at least two bosses are evenly, integrally and fixedly arranged on the outer wall of the lower portion of the upper joint along the circumference, a mounting long groove penetrating through the inner walls of the middle and the lower portion of the upper joint is formed in the inner wall of the upper joint, the movable sleeve is a triangular prism with a circular cavity in the interior, and the lower step is sleeved with the movable sleeve. The rotating ejecting type variable-diameter drill bit is reasonable and compact in structure, convenient to use and capable of drilling into a reservoir stratum with a small borehole and then pushing the rotating sleeve to eject out a cutting arm through a bit weight, then, the bit weight enables the cutting arm to be opened to the design angle through a thrust rod, the variable-diameter range can be at least expanded to be more than two times the diameter of an original drill bit tool, trip-out is easy, and mineral resource mining efficiency is high.
Description
Technical field
the utility model relates to reducing geological drill bit device technique field, is a kind of screw-top expansion bit.
Background technology
deep layer mining deposits mining type mainly comprises openstope method, the method for mining by the way of filling and caved stopes at present.The meeting that existing mining methods are difficult to avoid causes geological disaster in various degree.Along with the increase of depth of stratum, bottom hole temperature (BHT) and pressure also increase thereupon, have improved greatly labour intensity and the exploitation difficulty of mining.Prior art is difficult to exploit the mining deposits below buried depth 2000m, but along with shallow-layer mining deposits is exploited in a large number, deep layer mineral reserve must be the pillars of following related industry and day by day manifest its importance.Relevant scholar has proposed utilization oil-gas mining drilling technology and has exploited deep layer mineral reserve, comprehensive economy and production efficiency, bore small diameter borehole at reservoir with overlying strata, arrive reservoir and creep into major diameter, with drilling fluid, mineral grain is carried to ground and separates later.In Oil/gas Well, there is at present a kind of minor diameter that can first carry out to creep into and then carry out the expansion bit that major diameter is crept into, but this expansion bit is hole enlargement 10% at the most, cannot meet the down-hole hole enlargement work of coal work completely, and also not have this minor diameter that first carries out to creep into, then carry out the expansion bit instrument that major diameter is crept into for coal mining operation at present.
Summary of the invention
the utility model provides a kind of screw-top expansion bit, has overcome the deficiency of above-mentioned prior art, and it can effectively solve and can first not carry out at present minor diameter and creep into the problem of then carrying out the expansion bit instrument that major diameter creeps into.
the technical solution of the utility model realizes by following measures: a kind of screw-top expansion bit, comprises top connection, movable sleeve, rotary sleeve, lower contact and Compress Spring, in the external wall of upper portion of top connection, one is fixed with external diameter reduces successively topping bar and getting out of a predicament or an embarrassing situation from top to bottom, on the outer wall of the bottom of top connection, be fixed with the boss of at least two along even circumferential one, on the inwall of top connection, there is the installation elongated slot that connects top connection middle part and lower inner wall, movable sleeve is the triangular prism that there is circular cavity inside, on movable sleeve is sleeved on and gets out of a predicament or an embarrassing situation, on top connection outer wall below getting out of a predicament or an embarrassing situation, be installed with the baffle ring that external diameter is greater than movable sleeve internal diameter, in the upper inside wall of rotary sleeve, be provided with helicla flute corresponding with boss and that match, between every helicla flute, be parallel to each other, in the lower inner wall of rotary sleeve, be provided with axial elongated slot corresponding with boss and that match, every axial elongated slot is parallel to each other, helicla flute and axially elongated slot rounding off perforation, rotary sleeve is sleeved on the bottom outer wall of top connection, boss is positioned at the helicla flute corresponding with it, on the bottom outer wall of lower contact, one is fixed with cross section triangular prism boss triangular in shape, the lower contact of triangular prism boss top is installed together in spline mode with installation elongated slot, rotation block set is on triangular prism boss, on the top connection outer wall between baffle ring and rotary sleeve, be set with Compress Spring, the upper end of Compress Spring and the lower surface of baffle ring offset, the lower end of Compress Spring and the upper surface of rotary sleeve offset, on the outer wall of the bottom of rotary sleeve, be installed with three sides of triangular prism boss and distinguish three corresponding push rods along even circumferential, three sides of movable sleeve are corresponding with three sides of triangular prism boss respectively, on three sides of movable sleeve, be hinged with respectively distance rod, on three sides of triangular prism boss, be hinged with respectively cutting arm, on each cutting arm, there is respectively stress surface, on the cutting arm side relative with stress surface, be distributed with cutting teeth, on each push rod, there is respectively the surfaces of revolution, each surfaces of revolution offsets with the stress surface corresponding with it respectively, the cutting arm of push rod top and the lower end of distance rod are hinged.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
on the rotary sleeve outer wall of above-mentioned push rod below, one is fixed with limited ring dais, between limited ring dais and triangular prism boss, is installed with thrust bearing.
above-mentionedly on the outer wall of the bottom of top connection, be fixed with three boss along even circumferential one.
on above-mentioned top connection outer wall below getting out of a predicament or an embarrassing situation, be bolted the baffle ring that external diameter is greater than movable sleeve internal diameter is installed, on the outer wall of the bottom of rotary sleeve, be welded with three sides of triangular prism boss and distinguish three corresponding push rods along even circumferential, have external screw thread in the lower end of lower contact.
the utility model reasonable and compact in structure, easy to use, can first creep into reservoir with slim-hole, promote rotary sleeve by the pressure of the drill again and eject cutting arm, the pressure of the drill makes cutting arm open up into design angle by distance rod afterwards, reducing scope is minimum can expand to the more than 2 times of former bit tool diameter, pulls out of hole easily, and mining efficiency is high.
Brief description of the drawings
accompanying drawing 1 is that the master under the utility model cutting arm contraction state looks half section structural representation.
accompanying drawing 2 is looked half section structural representation for the master that the utility model push rod moves under stop state.
accompanying drawing 3 is that the master under the complete open configuration of the utility model cutting arm looks half section structural representation.
accompanying drawing 4 is that the A-A of accompanying drawing 1 is to sectional structure schematic diagram.
accompanying drawing 5 is that the B-B of accompanying drawing 2 is to sectional structure schematic diagram.
accompanying drawing 6 is the schematic diagram of the stress surface of the utility model cutting arm.
accompanying drawing 7 is the schematic diagram of the surfaces of revolution of the utility model push rod.
coding in accompanying drawing is respectively: 1 is top connection, and 2 for topping bar, and 3 for getting out of a predicament or an embarrassing situation, and 4 is boss, 5 for installing elongated slot, and 6 is movable sleeve, and 7 is baffle ring, 8 is rotary sleeve, and 9 is lower contact, and 10 is triangular prism boss, 11 is Compress Spring, and 12 is push rod, and 13 is distance rod, 14 is cutting arm, and 15 is stress surface, and 16 is the surfaces of revolution, 17 is limited ring dais, and 18 is bearing, and 19 is axial elongated slot.
Detailed description of the invention
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2,3,4,5,6,7, this screw-top expansion bit comprises top connection 1, movable sleeve 6, rotary sleeve 8, lower contact 9 and Compress Spring 11, in the external wall of upper portion of top connection 1 from top to bottom one be fixed with that external diameter reduces successively top bar 2 and get out of a predicament or an embarrassing situation 3, on the outer wall of the bottom of top connection 1, be fixed with the boss 4 of at least two along even circumferential one, on the inwall of top connection 1, there is the installation elongated slot 5 that connects top connection middle part and lower inner wall, movable sleeve 6 is the inner triangular prism that has circular cavity, movable sleeve 6 is sleeved on gets out of a predicament or an embarrassing situation on 3, on top connection 1 outer wall of getting out of a predicament or an embarrassing situation below 3, be installed with the baffle ring 7 that external diameter is greater than movable sleeve 6 internal diameters, in the upper inside wall of rotary sleeve 8, be provided with helicla flute corresponding with boss 4 and that match, between every helicla flute, be parallel to each other, in the lower inner wall of rotary sleeve 8, be provided with axial elongated slot 19 corresponding with boss 4 and that match, every axial elongated slot 19 is parallel to each other, helicla flute and axially elongated slot 19 rounding ofves perforations, rotary sleeve 8 is sleeved on the bottom outer wall of top connection 1, boss 4 is positioned at the helicla flute corresponding with it, on the bottom outer wall of lower contact 9, one is fixed with cross section triangular prism boss 10 triangular in shape, the lower contact 9 of triangular prism boss 10 tops is installed together in spline mode with installation elongated slot 5, 8 of rotary sleeves are on triangular prism boss 10, on top connection 1 outer wall between baffle ring 7 and rotary sleeve 8, be set with Compress Spring 11, the lower surface of the upper end of Compress Spring 11 and baffle ring 7 offsets, the upper surface of the lower end of Compress Spring 11 and rotary sleeve 8 offsets, on the outer wall of the bottom of rotary sleeve 8, be installed with three sides of triangular prism boss 10 and distinguish three corresponding push rods 12 along even circumferential, three sides of movable sleeve 6 are corresponding with three sides of triangular prism boss 10 respectively, on three sides of movable sleeve 6, be hinged with respectively distance rod 13, on three sides of triangular prism boss 10, be hinged with respectively cutting arm 14, on each cutting arm 14, there is respectively stress surface 15, on cutting arm 14 sides relative with stress surface 15, be distributed with cutting teeth, on each push rod 12, there is respectively the surfaces of revolution 16, each surfaces of revolution 16 offsets with the stress surface 15 corresponding with it respectively, the cutting arm 14 of push rod 12 tops is hinged with the lower end of distance rod 13.
under the effect of the pressure of the drill, top connection 1 is descending, and then compression Compress Spring 11, Compress Spring 11 is exerted pressure to rotary sleeve 8, under boss 4 and spiral fluted cooperation, rotary sleeve 8 rotates, and by push rod 12, cutting arm 14 is screwed out from the side of triangular prism boss 10, movable sleeve 6 axially has certain degree of freedom, eject in cutting arm 14 processes at push rod 12, movable sleeve 6 axially-movables coordinate the motion of cutting arm 14 and distance rod 13, prevent movement interference, in the time that the angle between cutting arm 14 and distance rod 13 is 120 °, boss 4 slides into spiral fluted tail end, boss 4 is transitioned into by helicla flute in the axial elongated slot 19 being communicated with it afterwards, the pressure of the drill continuation effect, top bar 2 lower surface contacts with movable sleeve 6, and promote cutting arm 14 by distance rod 13 and continue to open, until the lower surface of top connection 1 touches the upper surface of triangular prism boss 10, now cutting arm 14 keeps opening angle, when trip-out, under Compress Spring 11 effects, cutting arm 14 is regained, the axial displacement of baffle ring 7 restraint covers 6, the lower contact 9 of triangular prism boss 10 tops and installation elongated slot 5 are installed together and facilitate transmitting torque between lower contact 9 and top connection 1 in spline mode, Compress Spring 11 produces thrust between rotary sleeve 8 and top connection 1, helicla flute connects and can ensure that like this rotary sleeve 8 keeps due position and no longer rotation after push rod 12 ejects cutting arm 14 with axial elongated slot 19 rounding ofves, as shown in Figure 6, the surfaces of revolution 16 on each push rod 12 as shown in Figure 7 for stress surface 15 on each cutting arm 14.
can according to actual needs, above-mentioned screw-top expansion bit be made further optimization and/or improvements:
as shown in accompanying drawing 1,2,3, on rotary sleeve 8 outer walls of push rod 12 belows, one is fixed with limited ring dais 17, between limited ring dais 17 and triangular prism boss 10, is installed with thrust bearing 18.Thrust bearing 18 can reduce the resistance that rotary sleeve 8 rotates.
as required, on the outer wall of the bottom of top connection 1, be fixed with three boss 4 along even circumferential one.
as required, on top connection 1 outer wall of getting out of a predicament or an embarrassing situation below 3, be bolted the baffle ring 7 that external diameter is greater than movable sleeve 6 internal diameters is installed, on the outer wall of the bottom of rotary sleeve 8, be welded with three sides of triangular prism boss 10 and distinguish three corresponding push rods 12 along even circumferential, have external screw thread in the lower end of lower contact 9.
the utility model makes rotary sleeve 8 drive push rod 12 to rotate under the pressure of the drill effect, push rod 12 ejects cutting arm 14 from the side, in the time that cutting arm 14 opens 120 ° of design angles, the pressure of the drill effect lower thrust rod 13 is stressed and promote cutting arm 14 and continue to open, until cutting arm 14 arrives design angle, even if push rod 2 can ensure that cutting arm 14 and distance rod 13 also can further promote cutting arm 14 in initial wide-angle and open, control simple and reliable; Carrying out drill string while lifting, under Compress Spring 11 effects, movable sleeve 6 drives distance rod 13 to move, and distance rod 13 drags cutting arm 14 and regains, and pulls out of hole easily; And cutting arm 14 of the present utility model and distance rod 13 open from the side, the phenomenon that can effectively avoid mineral grain to block causing instrument to open.The utility model can first creep into reservoir with slim-hole, promote rotary sleeve 8 by the pressure of the drill again and eject cutting arm 14, the pressure of the drill makes cutting arm 14 open up into design angle by distance rod afterwards, simple in structure, reducing scope is minimum can expand to the more than 2 times of former bit tool diameter, pull out of hole easily, mining efficiency is high.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (5)
1. a screw-top expansion bit, is characterized in that comprising top connection, movable sleeve, rotary sleeve, lower contact and Compress Spring, in the external wall of upper portion of top connection, one is fixed with external diameter reduces successively topping bar and getting out of a predicament or an embarrassing situation from top to bottom, on the outer wall of the bottom of top connection, be fixed with the boss of at least two along even circumferential one, on the inwall of top connection, there is the installation elongated slot that connects top connection middle part and lower inner wall, movable sleeve is the triangular prism that there is circular cavity inside, on movable sleeve is sleeved on and gets out of a predicament or an embarrassing situation, on top connection outer wall below getting out of a predicament or an embarrassing situation, be installed with the baffle ring that external diameter is greater than movable sleeve internal diameter, in the upper inside wall of rotary sleeve, be provided with helicla flute corresponding with boss and that match, between every helicla flute, be parallel to each other, in the lower inner wall of rotary sleeve, be provided with axial elongated slot corresponding with boss and that match, every axial elongated slot is parallel to each other, helicla flute and axially elongated slot rounding off perforation, rotary sleeve is sleeved on the bottom outer wall of top connection, boss is positioned at the helicla flute corresponding with it, on the bottom outer wall of lower contact, one is fixed with cross section triangular prism boss triangular in shape, the lower contact of triangular prism boss top is installed together in spline mode with installation elongated slot, rotation block set is on triangular prism boss, on the top connection outer wall between baffle ring and rotary sleeve, be set with Compress Spring, the upper end of Compress Spring and the lower surface of baffle ring offset, the lower end of Compress Spring and the upper surface of rotary sleeve offset, on the outer wall of the bottom of rotary sleeve, be installed with three sides of triangular prism boss and distinguish three corresponding push rods along even circumferential, three sides of movable sleeve are corresponding with three sides of triangular prism boss respectively, on three sides of movable sleeve, be hinged with respectively distance rod, on three sides of triangular prism boss, be hinged with respectively cutting arm, on each cutting arm, there is respectively stress surface, on the cutting arm side relative with stress surface, be distributed with cutting teeth, on each push rod, there is respectively the surfaces of revolution, each surfaces of revolution offsets with the stress surface corresponding with it respectively, the cutting arm of push rod top and the lower end of distance rod are hinged.
2. screw-top expansion bit according to claim 1, is characterized in that on the rotary sleeve outer wall of push rod below, one is fixed with limited ring dais, between limited ring dais and triangular prism boss, is installed with thrust bearing.
3. screw-top expansion bit according to claim 1 and 2, is characterized in that being fixed with three boss along even circumferential one on the outer wall of the bottom of top connection.
4. screw-top expansion bit according to claim 1 and 2, it is characterized in that being bolted the baffle ring that external diameter is greater than movable sleeve internal diameter being installed on the top connection outer wall below getting out of a predicament or an embarrassing situation, on the outer wall of the bottom of rotary sleeve, be welded with three sides of triangular prism boss and distinguish three corresponding push rods along even circumferential, have external screw thread in the lower end of lower contact.
5. screw-top expansion bit according to claim 3, it is characterized in that being bolted the baffle ring that external diameter is greater than movable sleeve internal diameter being installed on the top connection outer wall below getting out of a predicament or an embarrassing situation, on the outer wall of the bottom of rotary sleeve, be welded with three sides of triangular prism boss and distinguish three corresponding push rods along even circumferential, have external screw thread in the lower end of lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218575.6U CN203847003U (en) | 2014-04-30 | 2014-04-30 | Rotating ejecting type variable-diameter drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218575.6U CN203847003U (en) | 2014-04-30 | 2014-04-30 | Rotating ejecting type variable-diameter drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847003U true CN203847003U (en) | 2014-09-24 |
Family
ID=51560037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420218575.6U Expired - Lifetime CN203847003U (en) | 2014-04-30 | 2014-04-30 | Rotating ejecting type variable-diameter drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847003U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712251A (en) * | 2015-03-16 | 2015-06-17 | 中铁第四勘察设计院集团有限公司 | Pedestal drill and method for conducting concrete structure rear anchorage through same |
| CN110821483A (en) * | 2019-11-23 | 2020-02-21 | 中国石油集团西部钻探工程有限公司 | Drill column radial coupling micro-relay transmission device for while-drilling geological guide system |
-
2014
- 2014-04-30 CN CN201420218575.6U patent/CN203847003U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712251A (en) * | 2015-03-16 | 2015-06-17 | 中铁第四勘察设计院集团有限公司 | Pedestal drill and method for conducting concrete structure rear anchorage through same |
| CN110821483A (en) * | 2019-11-23 | 2020-02-21 | 中国石油集团西部钻探工程有限公司 | Drill column radial coupling micro-relay transmission device for while-drilling geological guide system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |
|
| CX01 | Expiry of patent term |