CN1321255C - Bottom hole hammer reverse circulation follow pipe drill - Google Patents
Bottom hole hammer reverse circulation follow pipe drill Download PDFInfo
- Publication number
- CN1321255C CN1321255C CNB2005100166239A CN200510016623A CN1321255C CN 1321255 C CN1321255 C CN 1321255C CN B2005100166239 A CNB2005100166239 A CN B2005100166239A CN 200510016623 A CN200510016623 A CN 200510016623A CN 1321255 C CN1321255 C CN 1321255C
- Authority
- CN
- China
- Prior art keywords
- drill
- hole
- bit body
- flap
- pin
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The present invention discloses a bottom hole hammer reverse circulation follow pipe drill for the construction of foundation engineering, which is mainly composed of a casing shoe, a drill body, a slag blocking rod, a Z-shaped drill flap, a pin, spring pin, etc., wherein the rear end of the drill body is provided with a spline and is mutually connected with a pneumatic penetrating type impacter of which the upper end is connected with a double-wall drill rod; the rotating angle of the closure of the drill flap is small so that the flexible opening or flexible closing of the drill flap is ensured. When the drill is lifted, the rear end of the drill flap directly enters the casing shoe, and the drill flap is fully closed by the contact of a chamfering of the rear end of the drill flap and a chamfering of an inner hole of the lower end part of the casing shoe. A conical surface which is arranged in a casing pipe is matched with a conical surface on the drill body, and impact force on the drill body is conveyed to the casing pipe by the conical surface so that the casing pipe and the drill are synchronously followed. Reverse circulation drilling is realized, the problem of the low efficiency of discharging slag for a drill hole with large diameter is solved. The utilization of the effective area of the drill flap is more, cloth teeth on the edge of the drill flap are added, and the service life of the drill is extended.
Description
Technical field
The present invention relates to the rock and soil drilling facility that a kind of basic engineering construction is used, particularly anti-circulation is advanced with pipe bit.
Background technology
Advancing with pipe bit is effective ways at troublesome zone drilling pore-formings such as fragmentation, leakage, drift sand, ovum gravels.Existing to advance mainly be that direct circulation is crept into pipe bit, and the casing diameter majority is advancing with pipe bit of minor diameter, adopts single off-balance bit more, and direct circulation deslagging mode is mainly used in constructions such as rock anchorage boring, dam foundation peephole.Going into bore, to advance to have its moment of torsion of the eccentric casing drilling tool of list of Britain and upright Fox, Charles James drilling tool company (HALFAX) development with pipe bit be by hanging the lateral pin transmission of drill bit, easily cause the lateral pin distortion, cause drill bit closure freely, single off-balance bit needs Rotate 180 ° just can reach required diameter, and stuck probability is increased.West Germany Stanwyck company creeps into two revolutions of developing on the method basis at (ODEX) of Sweden and advances facility with pipe bit and have two kinds: a kind of is that drill bit and down-the-hole hammer come control centre by three projections that are welded on the casing shoe inwall, when off-balance bit stretches out casing shoe downwards, projection is in control down-the-hole hammer position, at this moment realize that eccentric reaming creeps into, sleeve pipe follows up simultaneously, when creeping into certain depth when up lifting drilling tool, projection is positioned at control bit body position, and have a projection to embed the bit body groove, off-balance bit can enter sleeve pipe and propose the face of land; Another kind is when being centered in the interior pipe of revolution by interior pipe, move down simultaneously at the outside sleeve that has boss of down-the-hole hammer by a spiral expansion joint and sleeve pipe, boss is located on the interior step of sleeve bottom casing shoe, press to a side with the down-the-hole hammer this moment, and the expansion subdrilling of realizing off-balance bit advances, off-balance bit is retracted in the sleeve pipe when carrying brill, makes drill bit mention the face of land.For preventing the casing shoe inter deterioration, its inside with the corresponding position of boss on be provided with wear ring.It is big and drilling depth is bigger that two rotary drilling methods have a bore diameter, and the sleeve pipe look ahead system creeps into to rise with sleeve pipe and advantage such as pulls out, unloading is easy; Shortcoming is to be applicable to that direct circulation creeps into, and deslagging is not smooth, and used casing shoe costs an arm and a leg, and easily stays in the hole, is lowered to the restricted diameter system of sleeve pipe, the drill configuration complexity, and power consumption is big.Close two eccentric that affiliated MIT (Mitsubishi) of state Ingersoll-rand company (Ingersoll-Rand) produces with pipe bit, it is more that structurally the drill bit flap valve effectively utilizes space wastage, the cloth tooth is less on the edge, influence the application life of drill bit, and only be applicable to that direct circulation creeps into, deslagging efficient is lower, two flap valve bonding surfaces are vertical surface, carry that the rock slag easily is sandwiched between two flap valves when boring, two flap valves can not accurately be taken in the sleeve pipe and bit freezing, give and propose drilling and come inconvenience.
Summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art and shortcoming, provide a kind of and be suitable for the anti-circulation of heavy caliber and advance with pipe bit, drilling life of bit is longer, carry that rock slag when boring is difficult for being sandwiched between two flap valves and bit freezing with pipe bit.
The present invention realizes in the following manner, accompanying drawings is as follows: bit body 2 bottom surfaces are provided with the bottom surface pin-and-hole 18 of parallel bit body 2 axis more than, bit body 2 bottoms are provided with the bottom pin-and-hole 19 of vertical bit body 2 axis more than, bearing pin 6 passes drill bit flap valve 5 set pin shaft holes 9 and bit body 2 bottom pin-and-holes 19 hang drill bit flap valve 5, resilient key 7 passes the set pin-and-hole 20 in bearing pin 6 tops by bit body 2 bottom pin-and-holes 19 bearing pin 6 is fixed on the bit body 2, bearing pin 6 be pin also be the turning cylinder of drill bit flap valve 5, bit body 2 is provided with two slag absorbing holes 15, the axis of rotation angle of the center line in slag absorbing hole 15 and bit body 2 is 20-30 °, 15 tops, two slag absorbing holes communicate with the centre bore 13 of bit body 2, and pushing off the slag bar 3 is placed in the groove of offering 15 bottoms, slag absorbing hole 17.
The present invention can also realize in the following manner that the bonding surface of two drill bit flap valves 5 is the Z font, and the bottom surface of the relative bit body 2 of crossline direction face of Z font is inclined-plane 10,11.Post tooth 12 on the drill bit flap valve 5 is a non-uniform Distribution, and Z font horizontal line exterior string radius of gyration larger part insert post tooth 12 is more, and Z font vertical line exterior string radius of gyration smaller part insert post tooth 12 is less.Be provided with steam vent 4 near the bit body 2 bottom face slag absorbing holes 15, in spline, be provided with little inclined hole 14 more than.
The present invention has realized that through test anti-circulation advances with pipe bit, solve large diameter borehole and investigated inefficient problem, drill bit flap valve effective area utilizes more, increased the cloth tooth on the edge, improved the application life of drill bit, the closed rotational angle of drill bit flap valve is less, has guaranteed that the drill bit flap valve opens flexibly or closure.
Description of drawings
Accompanying drawing 1 is the bottom hole hammer reverse circulation follow pipe drill shape assumption diagram
Accompanying drawing 2 is the structure chart of drill bit flap valve 5
Accompanying drawing 3 is the sectional view of bit body 2
Accompanying drawing 4 is bit body 2 and drill bit flap valve 5 assembly relation sectional views
Accompanying drawing 5 is the sectional view of bit body 2 bottom surface pin-and-holes 18 and bottom pin-and-hole 19
Accompanying drawing 6 is the sectional view of bearing pin 6
Description of reference numerals:
1 casing shoe, 2 bit bodys, 3 pushing off the slag bars, 4 steam vents, 5 drill bit flap valves, 6 bearing pins, 7 resilient keys, 8 splines, 9 pin shaft holes, 10,11 inclined-planes, 12 post teeth, 13 centre bores, 14 little inclined holes, 15 slag absorbing holes, 16 conical surfaces, 17 grooves, 18 bottom surface pin-and-holes, 19 bottom pin-and-holes, 20 pin-and-holes,
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing:
Bit body 2 bottom surfaces are provided with the bottom surface pin-and-hole 18 of two parallel bit body 2 axis, bit body 2 bottoms are provided with the bottom pin-and-hole 19 of two vertical bit body 2 axis, two bearing pins 6 pass two set separately pin shaft hole 9 and bit body 2 bottom pin-and-holes 19 of drill bit flap valve 5 respectively and hang two drill bit flap valves 5 respectively, resilient key 7 passes two set pin-and-holes 20 in bearing pin 6 tops by bit body 2 bottom pin-and-holes 19 bearing pin 6 is fixed on the bit body 2, bearing pin 6 is the pin that hangs two drill bit flap valves 5, it also is the turning cylinder separately of two drill bit flap valves 5, the bonding surface of two drill bit flap valves 5 is the Z font, the back edge of drill bit flap valve 5 is provided with big chamfering, when carrying brill, drill bit flap valve 5 rear ends can directly enter casing shoe 1, make drill bit flap valve 5 closed fully by means of the chamfering of drill bit flap valve 5 rear ends with the contact of Hole chamfering in casing shoe 1 lower end, until a whole set of drilling tool is proposed from casing shoe 1.The front end face of drill bit flap valve 5 studs with the post tooth 12 of some non-uniform Distribution, and Z font horizontal line exterior string radius of gyration larger part insert post tooth 12 is more, and Z font vertical line exterior string radius of gyration smaller part insert post tooth 12 is less.For preventing to come difficulty because of accompanying the rock slag between the two junction to proposing drilling in two drill bit flap valve 5 closing course, the bottom surface of the relative bit body 2 of crossline direction face of Z font is designed to inclined-plane 10 and 11, the front end face of drill bit flap valve 5 leaves than the bigger distance of drill bit flap valve 5 thickness with the bottom surface of casing shoe 1, like this when carrying brill, 5 folded rock slags of open two drill bit flap valves are fallen in the hole under deadweight, and unlikely in the brill drill bit flap valve 5 being blocked carrying of back can not be closed fully.Bit body 2 bottoms are provided with two slag absorbing holes 15, when creeping into, drilling tool is just changeing by post tooth 12 opens drill bit flap valve 5 with the friction of scar, after drill bit flap valve 5 opens, two slag absorbing holes 15 of bit body 2 bottoms are exposed, the axis of rotation angle of the center line in slag absorbing hole 15 and bit body 2 is 26 °, 15 tops, two slag absorbing holes communicate with the centre bore 13 of bit body 2, for preventing that rock slag card from blocking up drill bit, be provided with pushing off the slag bar 3 limits oarse-grained rock slag and enters slag absorbing hole 15 in 15 bottoms, slag absorbing hole, pushing off the slag bar 3 is placed in the groove of offering 15 bottoms, slag absorbing hole 17, and pushing off the slag bar 3 tilts in slag absorbing hole 15, and its direction is with the direction unanimity of slag absorbing hole 15 axis.Be provided with two steam vents 4 near the slag absorbing hole, bit body 2 bottom 15, when creeping into, part waste gas ejects from two steam vents 4, on the one hand near the rock slag it is blown and stir, prevent to pile up in the dead angle that the rock slag forms between two drill bit flap valves 5, help slag absorbing hole 15 the rock slag is sucked, the gas that ejects on the other hand can play the effect of cooling drill bit.In spline, be provided with three little inclined holes 14, the waste gas that impactor can be produced sprays to the centre bore 13 of bit body 2, produce jet effect, form certain negative pressure, the rock slag 15 is sucked and upwards and through the central through hole of through impactor and the central through hole of double-wall drill pipe is discharged to the face of land with air-flow from the slag absorbing hole, realize that gaslift is counter to circulate, having under the situation of water, the face of land can be provided with gravel pump, utilizes pump to inhale anti-circulation and comes deslagging.
Bit body 2 links by spline 8 and pneumatic through impactor, the upper end of through air hammer connects with double-wall drill pipe, casing shoe 1 rear end connects with sleeve pipe by left hand thread, the compressed air that air compressor machine produces enters through air hammer by the circular passage of double-wall drill pipe, impactor work, the set spline 8 of its reciprocating motion of the pistons drill hammer body 2 afterbodys, the rock of post tooth 12 drill hammer flap valves 5 fronts on the drill bit flap valve 5 of drive bit body 2 front ends, make its broken rock slag that forms, the rock slag is inhaled into slag absorbing hole 15, by bit body 2 central passages 13, the centre bore of through impactor central passage and double-wall drill pipe is discharged to the face of land.The conical surface that is provided with in the sleeve pipe cooperates with the conical surface on the bit body 2 16, the impact force on the bit body 2 by the conical surface 16 pass to sleeve pipe make sleeve pipe with drill bit follow synchronously into.
Claims (4)
1, a kind of bottom hole hammer reverse circulation follow pipe drill that is used for basic engineering construction, comprise the down-the-hole hammer, casing shoe, spline and bit body, it is characterized in that, bit body (2) bottom surface is provided with the bottom surface pin-and-hole (18) of parallel bit body (2) axis more than, bit body (2) bottom is provided with the bottom pin-and-hole (19) of vertical bit body (2) axis more than, bearing pin (6) passes the set pin shaft hole of drill bit flap valve (5) (9) and bit body (2) bottom pin-and-hole (19) hangs drill bit flap valve (5), resilient key (7) passes the set pin-and-hole in bearing pin (6) top (20) by bit body (2) bottom pin-and-hole (19) bearing pin (6) is fixed on the bit body (2), bearing pin (6) be pin also be the turning cylinder of drill bit flap valve (5), bit body (2) is provided with two slag absorbing holes (15), the axis of rotation angle of the center line in slag absorbing hole (15) and bit body (2) is 20-3 °, top, two slag absorbing holes (15) communicates with the centre bore (13) of bit body (2), and pushing off the slag bar (3) is placed in the groove of offering bottom, slag absorbing hole (15) (17).
According to the said bottom hole hammer reverse circulation follow pipe drill of claim 1, it is characterized in that 2, the bonding surface of two drill bit flap valves (5) is the Z font, the bottom surface of the relative bit body of crossline direction face (2) of Z font is inclined-plane (10), (11).
3, according to claim 1 or 2 said bottom hole hammer reverse circulation follow pipe drills, it is characterized in that, post tooth (12) on the drill bit flap valve (5) is a non-uniform Distribution, Z font horizontal line exterior string radius of gyration larger part insert post tooth (12) is more, and Z font vertical line exterior string radius of gyration smaller part insert post tooth (12) is less.
4, according to the said bottom hole hammer reverse circulation follow pipe drill of claim 1, it is characterized in that, be provided with steam vent (4) near bit body (2) the bottom face slag absorbing hole (15), in spline, be provided with little inclined hole (14) more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100166239A CN1321255C (en) | 2005-03-11 | 2005-03-11 | Bottom hole hammer reverse circulation follow pipe drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100166239A CN1321255C (en) | 2005-03-11 | 2005-03-11 | Bottom hole hammer reverse circulation follow pipe drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1651711A CN1651711A (en) | 2005-08-10 |
| CN1321255C true CN1321255C (en) | 2007-06-13 |
Family
ID=34875632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100166239A Expired - Fee Related CN1321255C (en) | 2005-03-11 | 2005-03-11 | Bottom hole hammer reverse circulation follow pipe drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1321255C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956525B (en) * | 2010-09-08 | 2013-05-08 | 吉林大学 | Down-the-hole hammer reverse concentric casing drilling tool |
| CN102094581B (en) * | 2010-12-01 | 2014-09-17 | 卢丹 | Hammer |
| CN102561946B (en) * | 2012-02-01 | 2014-07-23 | 山河智能装备股份有限公司 | Drill while drilling machine and construction method of pile while drilling |
| US9328564B2 (en) * | 2012-03-09 | 2016-05-03 | Smith International, Inc. | Cutting elements retained within sleeves |
| CN104662252B (en) | 2012-08-21 | 2017-07-07 | 史密斯国际有限公司 | Scroll-diced device with closure retaining ring |
| CN103993836B (en) * | 2014-06-04 | 2016-07-13 | 梁振西 | Drill bit for the boring of bridge foundation large diameter pile |
| CN104329028B (en) * | 2014-11-16 | 2016-08-24 | 吉林大学 | Split type interior injection reacting cycle rotary percussion drill bit |
| CN104832095B (en) * | 2015-03-17 | 2017-03-01 | 吉林大学 | Single sliding block formula block-resistant type reverse circulation drill bit |
| CN108138543B (en) | 2015-09-29 | 2020-08-18 | 史密斯国际有限公司 | Improvements in stability of rolling cutters |
| CN106988675B (en) * | 2017-05-05 | 2023-09-12 | 侯丽娜 | Working device of highway guardrail hydraulic pile driving and drilling machine |
| CN107100551B (en) * | 2017-06-24 | 2023-12-19 | 广州君豪岩土工程有限公司 | Drill bit for preventing mud stratum from collapsing during drilling |
| CN110748302A (en) * | 2019-12-04 | 2020-02-04 | 吉林大学 | Split type major diameter air reverse circulation down-the-hole hammer expands end drill bit |
| CN111021964B (en) * | 2019-12-31 | 2024-04-26 | 吉林大学 | Down-the-hole hammer reverse circulation pipe-following drill bit suitable for large-diameter drilling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0776985A (en) * | 1993-09-07 | 1995-03-20 | Mitsubishi Materials Corp | Excavating tool |
| JPH07238764A (en) * | 1994-02-28 | 1995-09-12 | Mitsubishi Materials Corp | Excavation tool |
| JP2001146886A (en) * | 1999-11-22 | 2001-05-29 | Mitsubishi Materials Corp | Excavating tool |
| JP2003082971A (en) * | 2001-09-13 | 2003-03-19 | Mitsubishi Materials Corp | Excavating tool |
-
2005
- 2005-03-11 CN CNB2005100166239A patent/CN1321255C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0776985A (en) * | 1993-09-07 | 1995-03-20 | Mitsubishi Materials Corp | Excavating tool |
| JPH07238764A (en) * | 1994-02-28 | 1995-09-12 | Mitsubishi Materials Corp | Excavation tool |
| JP2001146886A (en) * | 1999-11-22 | 2001-05-29 | Mitsubishi Materials Corp | Excavating tool |
| JP2003082971A (en) * | 2001-09-13 | 2003-03-19 | Mitsubishi Materials Corp | Excavating tool |
Non-Patent Citations (3)
| Title |
|---|
| 潜孔锤钻进在复杂地层中应用 蒋荣庆等，地质与勘探，第6卷第35期 1999 * |
| 跟套管钻进技术及其应用 耿瑞伦，地质装备，第3卷 2000 * |
| 跟套管钻进技术及其应用 耿瑞伦，地质装备，第3卷 2000;潜孔锤钻进在复杂地层中应用 蒋荣庆等，地质与勘探，第6卷第35期 1999 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1651711A (en) | 2005-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1321255C (en) | Bottom hole hammer reverse circulation follow pipe drill | |
| CN106150349B (en) | A kind of circumferential direction axial vacuum impact speed-raising tool | |
| CN103244051B (en) | A kind of combined down-hole hammer drilling tool and pile forming method thereof | |
| CN100557185C (en) | Hollow hammer hole bottom strong suction apparatus | |
| KR930006409B1 (en) | Air pressure impact drilling apparatus | |
| CN102828690B (en) | Walking dual-swing downhole drill | |
| CN104453704B (en) | A kind of hydraulic drill rig top hammer formula impact rotary power head | |
| CN104832082B (en) | Pneumatic DTH hammer reverse circulation slagging construction process for rotary drilling rig | |
| CN102003139B (en) | Single body large-diameter pneumatic down-the-hole hammer | |
| CN101956525A (en) | Down-the-hole hammer reverse concentric casing drilling tool | |
| KR101302554B1 (en) | Bit of hammer for drilling the ground | |
| CN107642327A (en) | A kind of enclosed positive and negative circulation impact device | |
| CN201087695Y (en) | High wind pressure downhole air hammer | |
| CN103603595B (en) | A kind of hydraulical impact rotary inverse circulation drilling apparatus | |
| CN201857895U (en) | Single large-diameter pneumatic DTH (down the hole) hammer | |
| CN101319599B (en) | Side suction type reverse circulation drilling bit | |
| US20100108398A1 (en) | Percussion Rock Drilling Bit with More Efficient Flushing | |
| CN104389515B (en) | A kind of hydraulic drill rig jump bit | |
| KR100419973B1 (en) | Ground drilling rigs and method without raising dust | |
| KR101183445B1 (en) | Excavating head having large-diameter hydraulic hammer and excavating method using the same | |
| CN113631793A (en) | Rock drill bit for percussive drilling | |
| CN202755890U (en) | Walking type double circling downhole drill | |
| CN104763323A (en) | Rotating percussion-compact two-way pneumatic impact mole | |
| CN212105723U (en) | Reverse circulation impact device with guide structure | |
| KR100205694B1 (en) | Pneumatic down hole type base rock drill and pneumatic hammer used to this |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |