CN203640605U - Oil storage single-cone bit with O-shaped ring and metal ring two-way combined seal - Google Patents
Oil storage single-cone bit with O-shaped ring and metal ring two-way combined seal Download PDFInfo
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- CN203640605U CN203640605U CN201320520610.5U CN201320520610U CN203640605U CN 203640605 U CN203640605 U CN 203640605U CN 201320520610 U CN201320520610 U CN 201320520610U CN 203640605 U CN203640605 U CN 203640605U
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Abstract
The utility model discloses an oil storage single-cone bit with O-shaped ring and metal ring two-way combined seal. The bit realizes the two-way combined seal of the axial seal of the end surface of a wheel metal ring (4) and the radial seal of a wheel O-shaped ring (5) in the condition of ultrahigh rotation speed, adopts a floating sleeve bearing communicated with an oil storage pocket (5), improves the overall breakage efficiency of rocks at a shaft bottom through PDC teeth and hard alloy teeth embedded on a cone (2) and a main body (2) aiming at the difference of action zones, enhances the gauge protection effect of the bit, improves the operating stability of the bit, shortens the drilling period, and reduces the drilling cost.
Description
Technical field
The utility model belongs to the rock bit technology that rock drilling well is used, and is specifically related to the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination sealing.
Background technology
In rock drilling technology, generally take tricone bit as main tool, but single-cone rotary drill bit has many features to be better than tricone bit: helicoid hydraulic motor and the whirlpool drilling tool that falls is adopted in (1) domestic and international high rotating speed drilling well more, drill speed is 300-600r/min, belong to ultrahigh rotating speed, this is the utility model specific ultrahigh rotating speed scope of developing new product.Because the rotating speed of tricone bit gear wheel is 1.5 times of drill speed, under ultrahigh rotating speed, gear wheel rotating speed can reach 450-900r/min, and the rotating speed of single-cone rotary drill bit gear wheel is 75% of drill speed, single-wheel drill bit is deceleration rock bit thus, and the rotating speed of gear wheel is about the half of tricone bit gear wheel rotating speed.Under ultrahigh rotating speed, the rotating speed of single-cone rotary drill bit gear wheel is about 225-450r/min, therefore replaces tricone bit with single-wheel drill bit and can significantly improve bit performance, reduces drilling cost; (2) the spherical gear wheel of single-cone rotary drill bit can provide larger bearing space, provides bearing space sum much bigger than three conical cutters, and loading ability of bearing area is 5.8 times of three conical cutters, is conducive to improve to greatest extent bearing life; (3) the spherical gear wheel of single-cone rotary drill bit can provide maximum cloth tooth space, spherical shaft bottom is obtained efficient comprehensively broken, improves bit performance and reduces drilling cost; (4) single-cone rotary drill bit tooth post is with the broken spherical bottom rock of scraping mode, higher than tricone bit tooth rock fracture in dynamic indentation efficiency; (5) spherical gear wheel intensity is high, can bear larger the pressure of the drill and rotating speed.
But there is many defects in single-cone rotary drill bit at present, such as: the prior art of bearing seal is to adopt O shape seal with elastometic washer bearing, low in the high speed conditions lower seal life-span; After bearing seal inefficacy heavy wear, can there is lost cone accident; Bearing arrangement, flute profile and the design of cloth tooth are unreasonable;Above-mentioned many defects restrict the development of single-cone rotary drill bit technology and the performance of good characteristic, affect the market share of single-cone rotary drill bit.
Utility model content
The above deficiency existing for prior art, the purpose of this utility model is to provide a kind of oil storage single-cone rotary drill bit perfect, the sealing of the comprehensive O shape circle of performance metal ring bi-directional combination that designs.
For realizing above object, the utility model is achieved by the following technical solutions.
The oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination sealing, it is characterized in that, comprise wheel metal ring, wheel O shape circle, little axle, oil storage bag, little axle sleeve, the main body of connecting thread is arranged at top, the oblique large axle journal stretching out in main body below, be sleeved on the gear wheel on large axle journal, be arranged in the tooth post on gear wheel, be sleeved on the large shaft sleeve of large axle journal outer wall; Described gear wheel is provided with step-like installing blind, in the macropore of step-like installing blind, be provided with inwall cannelure near step place, large axle journal is provided with the outer wall cannelure corresponding with described inwall cannelure near its top end face, outer wall cannelure is connected with elastic spring with being provided with in inwall cannelure, and the step surface that is resisted against large axle journal top end face and described step-like installing blind is provided with thrust ring; Described large axle journal root is provided with pillow block rank, in the macropore of the step-like installing blind of gear wheel, is provided with gear wheel end slot near oral area, and large axle journal root is near being set with wheel metal ring and wheel O shape circle between pillow block rank place and gear wheel end slot, and wheel O shape snare is in wheel metal ring periphery; Described large axle journal top end face is provided with a small cylindrical opening, small cylindrical opening bottom is provided with a pressure transmission hole leading to outside main body, one end of described little axle and small cylindrical opening interference fit, be provided with little axle sleeve between the aperture inwall of the step-like installing blind of the little axle other end and gear wheel; Between described little axle and small cylindrical opening bottom, be provided with an oil storage bag of filling drill bit fat, oil storage bag with run through the oil through being arranged on little axle and be communicated with, oil through is communicated with the oil storage tank that is arranged on large axle journal outer wall, oil storage tank is communicated with oil filler point, and described oil filler point is arranged in large axle journal and leads to outside main body.
The feature of technique scheme and further improvement are:
Described radial sealing surfaces of taking turns metal ring comprises inclined-plane and plane, and described gear wheel end slot bottom surface comprises inclined-plane and the plane corresponding with the radial sealing surfaces of wheel metal ring; The described O shape circle of taking turns is between the radial sealing surfaces and gear wheel end slot bottom surface of wheel metal ring.
The inclined-plane that described radial sealing surfaces of taking turns metal ring comprises is lozenges.
The axial vane surface of the end face on described pillow block rank of taking turns large axle journal and corresponding wheel metal ring is slipper seal.
Described gear wheel self top center is provided with a little carbide alloy scoop chisel insert, and it is provided with the gear ring of six little carbide alloy scoop chisel insert compositions around; On gear wheel surface, from gear ring, be uniformly distributed 12 rinse baths that point to nose of cone, tooth post is embedded on the tooth ridge between rinse bath, and its arrangement mode starts to be followed successively by from gear wheel root: a little PDC tooth, two large carbide alloy scoop chisel inserts, two large PDC teeth.
Described main body surrounding is uniformly distributed the tooth post of four groups of axially-aligned, and every group of tooth post is respectively little carbide alloy scoop chisel insert, little PDC tooth from top to bottom.
Described little PDC tooth and little carbide alloy scoop chisel insert diameter are 14mm, and tooth depth is 10mm; Described large PDC tooth and large hard-metal insert radius are 12mm, and tooth depth is 8mm.
Described main body surrounding is uniformly distributed the tooth post of four groups of axially-aligned, and every group of tooth post is two little carbide alloy scoop chisel inserts.
Between described gear wheel and large axle journal, be provided with evenly distributed large roller, gear wheel top is provided with a centre tooth group, described centre tooth group is made up of a chisel teeth and two half chisel teeths that are symmetricly set on the addendum line both sides of this chisel teeth, is provided with multiple chisel teeths along described centre tooth group top to surrounding radiation.40 ° of described chisel teeth tooth top width 2mm, tooth depth 18mm, tooth angles.
Of the present utility model have outstanding substantive distinguishing features and a significant beneficial effect.Wherein, the sealing of O shape circle metal ring bi-directional combination, the radial seal and axial problem that have simultaneously solved bearing; Adopt elastic spring locking gear wheel, lost cone accident can not occur, can lost cone after bearing seal inefficacy heavy wear yet; Optimization cloth tooth, easily realizes rock bit and PDC drill bit is integrated, releases PDC tooth single-cone rotary drill bit, improves to greatest extent bit performance and reduces drilling cost.
Axial movable sealing and 0 shape that the utility model has been realized metal ring end face under ultrahigh speed rotating condition are enclosed the radially bi-directional combination sealing of static seal, adopt and the integrated high speed full floating cover of oil storage system Oil-storage bearing, on spherical gear wheel for PDC tooth and the hard-metal insert of zone of action difference insert, make the comprehensive damaged efficiency of bottom rock be improved and strengthen main body gauge effect, improved the stability of drill bit work.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
Fig. 1 is the full section schematic diagram of the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination of the present utility model sealing;
Fig. 2 is O shape circle metal ring bi-directional combination sealing partial view in Fig. 1;
Fig. 3 is tooth post shapes figure in Fig. 1, and wherein Fig. 3 a and Fig. 3 b are front view and the right views of PDC tooth tooth post, and Fig. 3 c and Fig. 3 d are front view and the right views of carbide alloy scoop chisel insert tooth post;
Fig. 4 is that gear wheel K in Fig. 1 is to tooth post distribution map;
Fig. 5 is the structural representation of the oil storage single-cone rotary drill bit of another kind of O shape circle metal ring bi-directional combination of the present utility model sealing;
Fig. 6 is the chisel teeth shape figure in Fig. 5;
Fig. 7 is that the H of Fig. 5 is to view.
In above figure: 1, main body; 2, gear wheel; 3, pillow block rank; 4, wheel metal ring; 5, wheel O shape circle; 6, large shaft sleeve; 6a, large roller; 7, oil storage bag; 8, little axle; 9, elastic spring; 10, thrust ring; 11, little axle sleeve; 12, drill bit fat; 13, pressure transmission hole; 14, oil groove; 15, oil through; 16, rinse bath; 17, little carbide alloy scoop chisel insert; 18, little PDC tooth; 19, large PDC tooth; 20, large carbide alloy scoop chisel insert; 21, side mud hole; 22, connecting thread; 23, large axle journal; 24, gear wheel end slot; 25, chisel teeth; 26, oil filler point.
The specific embodiment
With reference to Fig. 1, for the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination of the present utility model sealing, it comprises wheel metal ring (4), wheel O shape circle (5), little axle (8), oil storage bag (7), little axle sleeve (11), the main body (1) of connecting thread (22) is arranged at top, the oblique large axle journal (23) stretching out in main body (1) below, be sleeved on the gear wheel (2) on large axle journal (23), be arranged in the tooth post on gear wheel (2), be sleeved on the large shaft sleeve (6) of large axle journal (23) outer wall, gear wheel (2) is provided with step-like installing blind, in the macropore of step-like installing blind, be provided with inwall cannelure near step place, large axle journal (23) is provided with the outer wall cannelure corresponding with described inwall cannelure near its top end face, outer wall cannelure is connected with elastic spring (9) with being provided with in inwall cannelure, the step surface that is resisted against large axle journal (23) top end face and described step-like installing blind is provided with thrust ring (10), adopt elastic spring (9) locking gear wheel (2), can there is not lost cone (2) accident, even can lost cone (2) after bearing seal inefficacy heavy wear yet.Near the large axle journal (23) stretching out in main body (1), also have two side mud holes (21) that 90 degree distribute each other, in side mud hole (21), be provided with threaded nozzle, sealed nozzle circle and nozzle cage.Spray to the both sides of spherical gear wheel from the slurry jet of side mud hole ejection, clean spherical gear wheel, cooling tooth post, carry on the landwaste of shaft bottom and return.
In the partial view 2 of Fig. 1, large axle journal (23) root is provided with pillow block rank (3), in the macropore of the step-like installing blind of gear wheel (2), be provided with gear wheel end slot (24) near oral area, large axle journal (23) root locates to be set with wheel metal ring (4) and wheel O shape circle (5) between gear wheel end slot (24) near pillow block rank (3), and wheel O shape circle (5) is enclosed within wheel metal ring (4) periphery.Wheel O shape circle (5) by radial compression, forms radial seal between gear wheel end slot (24) bottom surface and wheel metal ring (4).
Large axle journal (23) top end face is provided with a small cylindrical opening, small cylindrical opening bottom is provided with a pressure transmission hole leading to outside main body (1), one end of little axle (8) and small cylindrical opening interference fit, be provided with little axle sleeve (11) between the aperture inwall of the step-like installing blind of little axle (8) other end and gear wheel (2); Between little axle (8) and small cylindrical opening bottom, be provided with an oil storage bag (7) of filling drill bit fat, oil storage bag (7) with run through the oil through (15) being arranged on little axle (8) and be communicated with, oil through (15) is communicated with the oil storage tank that is arranged on large axle journal (23) outer wall, oil storage tank is communicated with oil filler point (26), and oil filler point (26) is arranged in large axle journal (23) and leads to outside main body (1).Large shaft sleeve (6a), little axle sleeve (11) and thrust ring (10) and large axle journal (23), little axle (8), gear wheel (2) forms three floating ring bearings, in large shaft sleeve (6), on little axle sleeve (11) and thrust ring (10), there is oil storage tank, these oil storage tanks form path oil filler point (26) and oil through (15) and oil storage bag (7) are coupled together, cover after the plug of oil filler point (26), can carry out equalizer bearing external and internal pressure by the elastic deformation of oil storage bag (7) poor, provide drill bit fat (12) to floating ring bearing, guarantee that it normally works, wherein oil storage bag (7) and various axle sleeve are respectively by hydrogenated nitrile-butadiene rubber and high-speed tool steel making.
The radial sealing surfaces of wheel metal ring (4) comprises inclined-plane and plane, and gear wheel end slot (24) bottom surface comprises inclined-plane and the plane corresponding with the radial sealing surfaces of wheel metal ring (4), and bevel angle is about 20 °; Wheel O shape circle (5) is positioned between the radial sealing surfaces and described gear wheel end slot (24) bottom surface of wheel metal ring (4), and the inclined-plane that the radial sealing surfaces of wheel metal ring (4) comprises is lozenges.Lozenges angle is about 20 °, the shape of lozenges makes radial pressure produce the axial force that will take turns metal ring (4) and push to pillow block rank (3), each face of wheel metal ring (4) all carries out polishing, smooth treatment is also carried out with the axial seal face that wheel metal ring (4) contacts in pillow block rank (3), the axial vane surface of the end face on the pillow block rank (3) of large axle journal (23) and corresponding wheel metal ring (4) is slipper seal, and seal f ace width is 2-2.5mm.
As shown in Figures 1 to 4, gear wheel (2) self top center is provided with a little carbide alloy scoop chisel insert (17), and it is provided with the gear ring of six little carbide alloy scoop chisel inserts (17) composition around; On gear wheel (2) surface, from gear ring, be uniformly distributed 12 rinse baths (16) that point to gear wheel (2) summit, tooth post is embedded on the tooth ridge between rinse bath (16), and its arrangement mode starts to be followed successively by from gear wheel (2) root: a little PDC tooth (18), two large carbide alloy scoop chisel inserts (20), two large PDC teeth (19).Between these 12 groups of tooth post two adjacent groups, be interspersed, spherical bottom rock is obtained efficient comprehensively broken, two large PDC teeth (19) of every group are as the main tooth of its direct fractured rock, middle section and bore edges region at the bottom of in the time of single-cone rotary drill bit drilling well, application point is hole contact all the time work plane in the time that gear wheel (2) rotates; Two large carbide alloy scoop chisel inserts (20) of every group act on the region between middle section and bore edges at the bottom of hole as secondary tooth, in the time that rotating, gear wheel (2) has the contact work plane of interruption, as tooth top group, carry out incessantly broken by the part rock of main tooth fragmentation at seven little carbide alloy scoop chisel inserts (17) at gear wheel (2) top.As shown in Fig. 3 a, Fig. 3 b, Fig. 3 c and Fig. 4 d, wherein, PDC tooth is made up of semicircle diamond layer, hard-metal insert post, semicircle diamond layer is the direct thick man-made polycrystalline diamond of sintering one deck 1.5-2mm on the inclined-plane of hard-metal insert post, the cutting angle that these man-made polycrystalline diamonds form is 15-20 °, the acting surface in carbide alloy scoop chisel insert post front is a spoon shape cambered surface, and all tooth posts are all to have adopted the craft of consolidating teeth of colding pressing to be pressed in the perforation on gear wheel (2).
In Fig. 1, main body (1) surrounding is uniformly distributed the tooth post of four groups of axially-aligned, and every group of tooth post is respectively little carbide alloy scoop chisel insert (17), little PDC tooth (18) from top to bottom.Large carbide alloy scoop chisel insert (20) and large PDC tooth (19) diameter are 14mm, be highly 10mm, little carbide alloy scoop chisel insert (17) and little PDC(18) tooth diameter is 12mm, be highly 8mm, these tooth posts mainly prevent that as gauge teeth group the tooth post tooth top wearing and tearing on gear wheel (2) from causing borehole diameter to dwindle, and improves drill bit job stability with this with the little PDC tooth (18) that is distributed in gear wheel (2) bottom.All tooth post tooth tops that vary in size in the main body (1) of gear wheel (2) and drill bit are all on the smooth outer contour of single-cone rotary drill bit.
With reference to Fig. 5, Fig. 7, it is the structural representation of the oil storage single-cone rotary drill bit of another kind of O shape circle metal ring bi-directional combination of the present utility model sealing, the difference of enclosing the oil storage single-cone rotary drill bit of metal ring bi-directional combination sealing with aforementioned O shape is: main body (1) surrounding is uniformly distributed the tooth post of four groups of axially-aligned, and every group of tooth post is two little carbide alloy scoop chisel inserts (17).Between gear wheel (2) and large axle journal (23), be provided with evenly distributed large roller (6a), gear wheel (2) top is provided with a centre tooth group, Fig. 7 demonstrates, centre tooth group is made up of a chisel teeth (25) and two half chisel teeths that are symmetricly set on the addendum line both sides of this chisel teeth (25), be provided with multiple chisel teeths (25) along described centre tooth group top to surrounding radiation, these chisel teeths (25) have 12 groups, chisel teeth (25) between every two adjacent groups is staggered, to raise the efficiency fractured rock efficiency.Chisel teeth (25) is the steel-tooth that milling becomes in cone body, and the thick mill alloy-layer of the resistance to 1mm of surface overlaying of steel-tooth, to improve anti-wear performance.As shown in Figure 6, chisel teeth (25) tooth top width is 2mm to its chisel teeth concrete shape, and tooth depth is 18mm, and tooth angle is 40 °.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also comprises these changes and modification interior.
Claims (10)
1. the oil storage single-cone rotary drill bit of O shape circle metal ring bi-directional combination sealing, it is characterized in that, comprise wheel metal ring (4), wheel O shape circle (5), little axle (8), oil storage bag (7), little axle sleeve (11), the main body (1) of connecting thread (22) is arranged at top, the oblique large axle journal (23) stretching out in main body (1) below, be sleeved on the gear wheel (2) on large axle journal (23), be arranged in the tooth post on gear wheel (2), be sleeved on the large shaft sleeve (6) of large axle journal (23) outer wall; Described gear wheel (2) is provided with step-like installing blind, in the macropore of step-like installing blind, be provided with inwall cannelure near step place, large axle journal (23) is provided with the outer wall cannelure corresponding with described inwall cannelure near its top end face, outer wall cannelure is connected with elastic spring (9) with being provided with in inwall cannelure, and the step surface that is resisted against large axle journal (23) top end face and described step-like installing blind is provided with thrust ring (10); Described large axle journal (23) root is provided with pillow block rank (3), in the macropore of the step-like installing blind of gear wheel (2), be provided with gear wheel end slot (24) near oral area, large axle journal (23) root locates to be set with wheel metal ring (4) and wheel O shape circle (5) between gear wheel end slot (24) near pillow block rank (3), and wheel O shape circle (5) is enclosed within wheel metal ring (4) periphery; Described large axle journal (23) top end face is provided with a small cylindrical opening, small cylindrical opening bottom is provided with a pressure transmission hole leading to outside main body (1), one end of described little axle (8) and small cylindrical opening interference fit, be provided with little axle sleeve (11) between the aperture inwall of the step-like installing blind of little axle (8) other end and gear wheel (2); Between described little axle (8) and small cylindrical opening bottom, be provided with an oil storage bag (7) of filling drill bit fat, oil storage bag (7) with run through the oil through (15) being arranged on little axle (8) and be communicated with, oil through (15) is communicated with the oil storage tank that is arranged on large axle journal (23) outer wall, oil storage tank is communicated with oil filler point, and described oil filler point is arranged in large axle journal and leads to outside main body.
2. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 1 sealing, it is characterized in that, described radial sealing surfaces of taking turns metal ring (4) comprises inclined-plane and plane, and described gear wheel end slot (24) bottom surface comprises inclined-plane and the plane corresponding with the radial sealing surfaces of wheel metal ring (4); The described O of wheel shape circle (5) is positioned between described radial sealing surfaces and described gear wheel end slot (24) bottom surface of taking turns metal ring (4).
3. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 2 sealing, is characterized in that, the inclined-plane that described radial sealing surfaces of taking turns metal ring (4) comprises is lozenges.
4. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 1 sealing, is characterized in that, the axial vane surface of the end face on the pillow block rank (3) of described large axle journal (23) and corresponding wheel metal ring (4) is slipper seal.
5. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 1 sealing, it is characterized in that, described gear wheel (2) self top center is provided with a little carbide alloy scoop chisel insert (17), and it is provided with the gear ring of six little carbide alloy scoop chisel inserts (17) composition around; On gear wheel (2) surface, from gear ring, be uniformly distributed 12 rinse baths (16) that point to gear wheel (2) summit, tooth post is embedded on the tooth ridge between rinse bath (16), and its arrangement mode starts to be followed successively by from gear wheel (2) root: a little PDC tooth (18), two large carbide alloy scoop chisel inserts (20), two large PDC teeth (19).
6. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 5 sealing, is characterized in that, described little PDC tooth and little carbide alloy scoop chisel insert diameter are 14mm, and tooth depth is 10mm; Described large PDC tooth and large hard-metal insert radius are 12mm, and tooth depth is 8mm.
7. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 1 sealing, it is characterized in that, described main body (1) surrounding is uniformly distributed the tooth post of four groups of axially-aligned, and every group of tooth post is respectively little carbide alloy scoop chisel insert, little PDC tooth from top to bottom.
8. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 1 sealing, is characterized in that, described main body (1) surrounding is uniformly distributed the tooth post of four groups of axially-aligned, and every group of tooth post is two little carbide alloy scoop chisel inserts (17).
9. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 1 sealing, it is characterized in that, between described gear wheel (2) and large axle journal (23), be provided with evenly distributed large roller (6a), gear wheel (2) top is provided with a centre tooth group, described centre tooth group is made up of a chisel teeth (25) and two half chisel teeths that are symmetricly set on the addendum line both sides of this chisel teeth (25), is provided with multiple chisel teeths (25) along described centre tooth group top to surrounding radiation.
10. the oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination according to claim 9 sealing, is characterized in that 40 ° of described chisel teeth (25) tooth top width 2mm, tooth depth 18mm, tooth angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520610.5U CN203640605U (en) | 2013-08-23 | 2013-08-23 | Oil storage single-cone bit with O-shaped ring and metal ring two-way combined seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520610.5U CN203640605U (en) | 2013-08-23 | 2013-08-23 | Oil storage single-cone bit with O-shaped ring and metal ring two-way combined seal |
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| Publication Number | Publication Date |
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| CN203640605U true CN203640605U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320520610.5U Expired - Fee Related CN203640605U (en) | 2013-08-23 | 2013-08-23 | Oil storage single-cone bit with O-shaped ring and metal ring two-way combined seal |
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| CN (1) | CN203640605U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410448A (en) * | 2013-08-23 | 2013-11-27 | 陕西金刚石油机械有限公司 | O-shaped loop and metal ring two-way combined sealed oil storage single-cone bit |
| CN107740679A (en) * | 2017-10-06 | 2018-02-27 | 西南石油大学 | A kind of coiled tubing drilling combination sealing drill bit |
-
2013
- 2013-08-23 CN CN201320520610.5U patent/CN203640605U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410448A (en) * | 2013-08-23 | 2013-11-27 | 陕西金刚石油机械有限公司 | O-shaped loop and metal ring two-way combined sealed oil storage single-cone bit |
| CN103410448B (en) * | 2013-08-23 | 2016-03-09 | 陕西金刚石油机械有限公司 | The oil storage single-cone rotary drill bit of a kind of O shape circle metal ring bi-directional combination sealing |
| CN107740679A (en) * | 2017-10-06 | 2018-02-27 | 西南石油大学 | A kind of coiled tubing drilling combination sealing drill bit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20160823 |
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| CF01 | Termination of patent right due to non-payment of annual fee |