CN202596582U - Variable-diameter drill - Google Patents
Variable-diameter drill Download PDFInfo
- Publication number
- CN202596582U CN202596582U CN 201220222141 CN201220222141U CN202596582U CN 202596582 U CN202596582 U CN 202596582U CN 201220222141 CN201220222141 CN 201220222141 CN 201220222141 U CN201220222141 U CN 201220222141U CN 202596582 U CN202596582 U CN 202596582U
- Authority
- CN
- China
- Prior art keywords
- blade
- drilling
- blade support
- bore
- chambering
- 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
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to a mineral drilling tool, and particularly relates to a variable-diameter drill. A drill connecting rod (2) is connected with a second blade bracket (13); the second blade bracket (13) is connected with an intermediate connecting piece (12); the external circumference of the intermediate connecting piece (12) is provided with a clamping slot (12-1); the inside of the clamping slot (12-1) is provided with a drill drawing-back and chambering blade suspension bar (10); the rear end of the intermediate connecting piece (12) is provided with a first blade bracket (8); a drill drawing-back and chambering blade (11) is movably arranged between the junction of a drill pipe connecting piece (7) and the first blade bracket (8) and the drill drawing-back and chambering blade suspension bar (10); the outer circumferential surface of the intermediate connecting piece (12) is movably provided with three drilling and chambering blade suspension bars (5) at equal intervals by a dowel (4); the other ends of the drilling and chambering blade suspension bars (5) are connected with a drilling and chambering blade (3) by the dowel (4); and the drilling and chambering blade (3) is hinged with the second blade bracket (13) by the dowel (4). According to the variable-diameter drill disclosed by the utility model, chambering can be carried out while drilling, the hole collapse rate can be effectively lowered, the drilling resistance can be reduced, the drilling efficiency is high, the drilling tool jamming risk is reduced, and the drilling safety is guaranteed.
Description
Technical field
The utility model belongs to mining boring bar tool, but particularly a kind of expansion bit.
Background technology
When the coal mine gas extraction is worked, the hole of need in the coal seam, drilling, soft when coal, geostatic stress is higher or receive mining influence, the hole phenomenon that collapses in various degree can appear in boring; In the hole, can't take out drill bit is stuck, not only delay production, and cause unnecessary economic loss, the reaming bit kind is less at present; Function singleness can only reaming when piercing, because the bit part diameter can not change, when leg bores; Meet the problem of bit freezing, can only take out through the mode of extracting by force, and can not guarantee success, blades open when another kind of reaming bit bores for moving back; Enlarge bore diameter, but owing to will come and go twice construction, inefficiency.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned technical deficiency, provides a kind of simple in structure, easy to use, but can realize moving back the expansion bit that bores reaming.
The technical scheme that the utility model technical solution problem adopts is: but expansion bit comprises drill bit, drill bit connecting rod, drilling rod connector; Be characterized on the drill bit connecting rod, connecting a blade support two; Blade support two connects intermediate connector; Equidistance is established three draw-in grooves on the excircle of intermediate connector, and dress moves back and bores the reaming blade support in draw-in groove, dress blade support one in the centre bore of intermediate connector rear end; In blade support one and drilling rod connector junction and move back to bore between the reaming blade support to be equipped with and move back brill reaming blade with the pin activity; And bore side of reaming blade and establish back-moving spring moving back, in the centre bore of blade support one, position limiting slide block being housed, equidistance is established three with the pin activity and is advanced to bore the reaming blade support on outer circumference surface on the intermediate connector; Advance to bore the reaming blade support other end and flexibly connect an end that advances to bore the reaming blade, advance to bore the reaming blade other end and be hinged with pin and blade support two with pin.
The beneficial effect of the utility model is: but but expansion bit reaming while creeping into reduce the hole probability of collapsing effectively, and can reduce and creep into resistance, increase bore diameter effectively, drilling efficiency is high, reduces the bit freezing risk, guarantees boring safety.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
But Fig. 1 is a reducing drill bit structure office cuts open figure.
Among the figure, the 1-drill bit; 2-drill bit connecting rod; 3-advances to bore the reaming blade; The 4-pin; 5-advances to bore the reaming blade support; The 6-back-moving spring; 7-drilling rod connector; 8-blade support one; The 9-position limiting slide block; 10-moves back and bores the reaming blade support; 11-moves back and bores the reaming blade; The 12-intermediate connector; The 12-1-draw-in groove; 13-blade support two.
The specific embodiment
Embodiment; With reference to accompanying drawing 1, but the drill bit 1 of expansion bit be threaded with drill bit connecting rod 2, equidistance is established three blade supports 2 13 on drill bit connecting rod 2; Drill bit connecting rod 2 connects blade support 2 13, and blade support 2 13 connects with intermediate connector 12 front ends.Equidistance is hinged three and advances to bore reaming blade 3 with pin 4 on blade support 2 13; Advance to bore reaming blade 3 other ends and be hinged an into end of brill reaming blade support 5 with pin 4; Advancing to bore reaming blade support 5 other ends uses pin 4 to be hinged and connected to the rear end of intermediate connector 12; Equidistance is established three draw-in groove 12-1 on intermediate connector 12 back end outer circumference; In draw-in groove 12-1, be movably equipped with and move back brill reaming blade support 10, move back brill reaming blade support 10 other ends and be hinged the middle of moving back brill reaming blade 11, be provided with back-moving spring 6 in a side of moving back brill reaming blade 11 with pin 4; Moving back brill reaming blade 11 other ends is hinged and connected on the blade support 1 with pin 4; Blade support 1 is inserted in the centre bore of intermediate connector 12, and position limiting slide block 9 is housed in the centre bore of blade support 1, and blade support 1 is fixedly connected drilling rod connector 7.
But the operating principle of expansion bit is: when drill bit 1 advanced to bore, back-moving spring 6 and moving back bored reaming blade 11 and is retracted into draw-in groove 12-1 and blocks, and drill bit 1 contacts with rib; Drilling rod connector 7 is connected with drilling rod, advances to bore reaming blade support 5 and opens, and begins the work of creeping into; When moving back drill bit 1, drilling rod is extracted outside the hole, and drive is moved back brill reaming blade support 10 and opened; Under the effect of back-moving spring 6, move back and bore reaming blade support 10 and blocked to support to move back by the rear end of intermediate connector 12 and bore reaming blade 11; Advance to bore reaming blade 3 simultaneously and be contracted original state, and under position limiting slide block 9 drives, guarantee that it can not break away from drill bit integral body.
Claims (1)
1. but expansion bit; Comprise drill bit (1), drill bit connecting rod (2), drilling rod connector (7); Its spy connects a blade support two (13) in being that drill bit connecting rod (2) is gone up; Blade support two (13) connects intermediate connector (12); Equidistance is established three draw-in grooves (12-1) on the excircle of intermediate connector (12); Dress moves back and bores reaming blade support (10) in draw-in groove (12-1); Dress blade support one (8) in the centre bore of intermediate connector (12) rear end moves back brill reaming blade (11) in blade support one (8) and drilling rod connector (7) junction with moving back to bore between the reaming blade support (10) to be equipped with (4) activity of pin, and establishes back-moving spring (6) moving back (11) sides of brill reaming blade; Position limiting slide block (9) is housed in the centre bore of blade support one (8); Go up on the outer circumference surface equidistance at intermediate connector (12) and establish three with pin (4) activity and advance to bore reaming blade support (5), advance to bore reaming blade support (5) other end and flexibly connect an end that advances to bore reaming blade (3), advance to bore reaming blade (3) other end with pinning (4) and blade support two (13) is hinged with pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222141 CN202596582U (en) | 2012-05-17 | 2012-05-17 | Variable-diameter drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222141 CN202596582U (en) | 2012-05-17 | 2012-05-17 | Variable-diameter drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596582U true CN202596582U (en) | 2012-12-12 |
Family
ID=47314129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220222141 Expired - Fee Related CN202596582U (en) | 2012-05-17 | 2012-05-17 | Variable-diameter drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202596582U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056426A (en) * | 2013-01-24 | 2013-04-24 | 朱凡 | Drilling and reaming combined drill bit and method for drilling and reaming through same |
| CN103774997A (en) * | 2014-02-28 | 2014-05-07 | 赵小勇 | Automatic reducing pore-forming device mounted on drilling machine |
| CN104499944A (en) * | 2014-11-26 | 2015-04-08 | 西安泾渭超硬材料有限公司 | Diamond composite sheet reamer |
| CN104879063A (en) * | 2015-06-01 | 2015-09-02 | 王振环 | Hole expanding device |
| CN106337657A (en) * | 2016-11-24 | 2017-01-18 | 合肥工业大学 | Deformable rotary drill bit |
| CN106563835A (en) * | 2016-10-08 | 2017-04-19 | 郑州神利达钻采设备有限公司 | Variable-diameter drill bit capable of controlling drilling depth |
| CN107896907A (en) * | 2017-11-17 | 2018-04-13 | 刘铁英 | A kind of bamboo bamboo root and stem of certain plants cutter device |
| CN109128305A (en) * | 2018-08-17 | 2019-01-04 | 长沙仲瑞新材料有限公司 | A kind of high-strength abrasion-proof drill bit |
| CN109681128A (en) * | 2018-11-20 | 2019-04-26 | 上海市基础工程集团有限公司 | Variable diameter cartridge type drill bit device |
| CN110847825A (en) * | 2019-10-31 | 2020-02-28 | 山东科技大学 | Advancing type full-automatic controllable reducing pressure relief connecting rod drill bit device and using method thereof |
| CN111456639A (en) * | 2020-04-30 | 2020-07-28 | 山东建筑大学 | Adjustable soil body enlarged head anchor rod drill bit and using method thereof |
-
2012
- 2012-05-17 CN CN 201220222141 patent/CN202596582U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056426A (en) * | 2013-01-24 | 2013-04-24 | 朱凡 | Drilling and reaming combined drill bit and method for drilling and reaming through same |
| CN103774997A (en) * | 2014-02-28 | 2014-05-07 | 赵小勇 | Automatic reducing pore-forming device mounted on drilling machine |
| CN103774997B (en) * | 2014-02-28 | 2016-05-25 | 赵小勇 | Be arranged on the automatic diameter changing perforating device on rig |
| CN104499944A (en) * | 2014-11-26 | 2015-04-08 | 西安泾渭超硬材料有限公司 | Diamond composite sheet reamer |
| CN104499944B (en) * | 2014-11-26 | 2017-09-22 | 西安泾渭超硬材料有限公司 | A kind of diamond compact reamer |
| CN104879063B (en) * | 2015-06-01 | 2017-07-25 | 长安大学 | A kind of Counterboring apparatus |
| CN104879063A (en) * | 2015-06-01 | 2015-09-02 | 王振环 | Hole expanding device |
| CN106563835A (en) * | 2016-10-08 | 2017-04-19 | 郑州神利达钻采设备有限公司 | Variable-diameter drill bit capable of controlling drilling depth |
| CN106337657A (en) * | 2016-11-24 | 2017-01-18 | 合肥工业大学 | Deformable rotary drill bit |
| CN107896907A (en) * | 2017-11-17 | 2018-04-13 | 刘铁英 | A kind of bamboo bamboo root and stem of certain plants cutter device |
| CN109128305A (en) * | 2018-08-17 | 2019-01-04 | 长沙仲瑞新材料有限公司 | A kind of high-strength abrasion-proof drill bit |
| CN109681128A (en) * | 2018-11-20 | 2019-04-26 | 上海市基础工程集团有限公司 | Variable diameter cartridge type drill bit device |
| CN110847825A (en) * | 2019-10-31 | 2020-02-28 | 山东科技大学 | Advancing type full-automatic controllable reducing pressure relief connecting rod drill bit device and using method thereof |
| CN111456639A (en) * | 2020-04-30 | 2020-07-28 | 山东建筑大学 | Adjustable soil body enlarged head anchor rod drill bit and using method thereof |
| CN111456639B (en) * | 2020-04-30 | 2024-06-04 | 山东建筑大学 | Adjustable soil body expansion head anchor rod drill bit and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202596582U (en) | Variable-diameter drill | |
| CN206693921U (en) | The split type bore expanded hole drill bit of gas pumping | |
| CN202117570U (en) | Plug-in type high-pressure cutting drill bit | |
| CN214196191U (en) | Variable-diameter drill bit | |
| CN101012736A (en) | Slim-hole hydraulic controlled reducing reaming bit | |
| CN201963202U (en) | Strong push subsidiary type reamer bit | |
| CN104234632B (en) | A kind of bottom expanding drill | |
| CN205977217U (en) | High low -pressure water flow automatic switching type cuts coal device | |
| CN210217825U (en) | Hydraulic power and mechanical integrated reducing cave-making device in coal bed | |
| CN205977147U (en) | Cave is made with high low -pressure water flow automatic switching valve to water conservancy reaming | |
| CN202181847U (en) | PDC drilling and expanding double-wing combined drill bit | |
| CN102155164B (en) | Thrust auxiliary reamer bit | |
| CN101566049B (en) | Irregularly shaped multi-land notch groove drill rod | |
| CN204266925U (en) | A kind of coal mine roadway rock-reinforcing anti-collapse hole drill head | |
| CN201627535U (en) | Secondary reaming drainage bit | |
| CN202483446U (en) | Drilling, reaming and centering combined bit | |
| CN203321324U (en) | Underground coal mine seam drilling and cavitating device | |
| CN105156054A (en) | Local reverse circulation coring drill tool for loose and broken strata | |
| CN203756040U (en) | Double-step self-locking blade of reaming-while-drilling device | |
| CN202073499U (en) | PDC (polycrystalline diamond compact) drilling and expanding single-wing combined drill bit | |
| CN205936408U (en) | Toper anti -sticking bores drill bit | |
| CN101876236A (en) | Locally expanded multi-wing expanding bit | |
| CN205477379U (en) | Diamond compact piece drill bit that automatic flexible anti -sticking bored for coal mine | |
| CN210768715U (en) | A linkage for improving drilling gas drainage effect | |
| CN203201560U (en) | Safe high-efficiency high-pressure-water cutting adapter sleeve for mining drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130517 |