CN202882766U - Expanding drill bit - Google Patents
Expanding drill bit Download PDFInfo
- Publication number
- CN202882766U CN202882766U CN 201220605170 CN201220605170U CN202882766U CN 202882766 U CN202882766 U CN 202882766U CN 201220605170 CN201220605170 CN 201220605170 CN 201220605170 U CN201220605170 U CN 201220605170U CN 202882766 U CN202882766 U CN 202882766U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- bit body
- expanding
- diameter
- extended blades
- 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
Abstract
The utility model relates to a drill bit capable of expanding and drilling the bore diameter in a process of geological drilling construction, and in particular relates to an expanding drill bit. The expanding drill bit comprises a drill bit body, a spring catch, an expanding vane, a diameter-expanding blade and a cutting blade, wherein a mounting groove is arranged on a drill bit body wall; the cutting blade is mounted at the bottom of the drill bit body; the expanding vane is placed in the mounting groove; the top of the expanding vane is connected with the drill bit body; and the spring catch is arranged at a joint between the expanding vane and the drill bit body. By using the expanding drill bit, the conventional drilling process and method are changed, the smooth drilling in a complex geological environment is guaranteed, and the drilling problem in the complex geological environment is solved.
Description
Technical field
The utility model relates to the drill bit that can expand the probing aperture in a kind of geotechnical boring work progress, is specially diameter-enlarging drill bit.
Background technology
In the geological prospecting process; can run into very complicated stratum; carry out smoothly in order to make boring; the normal conduit that adopts creeps into, and it is by hitting the downward cutting soil of conduit, then descending drilling tool that rock core is salvaged out that conduit creeps into; when being mingled with larger piece stone or shiver stone in the soil body when very hard; incision is very difficult when creeping into, even can't creep into, and usually can cause and hole unsuccessfully.
Summary of the invention
The utility model purpose is to overcome defects, designs a kind of drill bit that can hole enlargement in boring procedure.
Design scheme of the present utility model is as follows: diameter-enlarging drill bit, formed by bit body, spring catch, extended blades, hole enlargement blade, cutting blade, have mounting groove on the drill bit body wall, cutting blade is installed in the bit body bottom, extended blades is placed in the mounting groove, the top of extended blades is connected with bit body, and the junction is provided with spring catch, and the extended blades end is equipped with the hole enlargement blade.
Described extended blades can be rotated around the top, and the expanded-angle under the spring catch effect is 0 ~ 45 degree.
Be provided with banking stop on the mounting groove of described bit body.
Described bit body also is furnished with auxiliary circle, is enclosed within the bit body bottom near cutting blade (5) position.
The utility model project organization is simple and practical, and drill bit can reach the function of diameter-enlarging drill bit through structural improvement, and its structure processing technology is simple, and cost of production can not increase too large.
Description of drawings
Fig. 1 is the structural representation of embodiment;
Fig. 2 is the structure top view of embodiment;
Fig. 3 is bit body and the extended blades connection diagram of embodiment;
Wherein 1---bit body, 2---spring catch, 3---extended blades, 4---the hole enlargement blade, 5---cutting blade, 6---mounting groove, 7---banking stop, 8---auxiliary circle.
The specific embodiment
The utility model is described in further detail below in conjunction with specific embodiment and Figure of description.
Embodiment: such as Fig. 1, Fig. 2 and shown in Figure 3, diameter-enlarging drill bit is comprised of bit body 1, spring catch 2, extended blades 3, hole enlargement blade 4, cutting blade 5, wall at bit body 1 has equally distributed four mounting grooves 6, four equally distributed cutting blades 5 are installed in the bit body bottom, stagger mutually in the position of mounting groove 6 and cutting blade 5.Extended blades 3 is installed in the mounting groove 6, and the top of extended blades 3 is connected with bit body 1, and the junction is provided with spring catch 2, and extended blades 3 ends are equipped with hole enlargement blade 4.
Extended blades 3 can be rotated around the top, and the expanded-angle under spring catch 2 effects is 0 ~ 30 degree.
Be provided with banking stop 7 on the mounting groove 6 of bit body 1; Bit body also is furnished with auxiliary circle 8, adopts and makes than the material of destructible, is enclosed within the bit body bottom near cutting blade 5 positions, also can adopt the cord bondage temporarily.
The cutting blade 5 that install the bit body bottom is as the incision blade; Hole enlargement blade 4 is inlayed in extended blades 3 bottoms, is used for enlarging bore diameter.During lower drilling tool, with auxiliary circle 8 four extended blades 3 are drawn in, at the bottom of hand-hole under the conduit, after drilling tool arrives at the bottom of the hole, begin to creep into, under rig pressure and dissection, destroy auxiliary circle 8, auxiliary circle 8 lost efficacy, extended blades 3 is outwards launched under the effect of spring catch 2, begin to creep into, the diameter-enlarging drill bit external diameter is greater than the conduit external diameter, conduit in creeping into capable process by deadweight or in addition suitable pressure follow up downwards.Carry when boring, extended blades 3 is adhered to basket and is risen, and when extended blades 3 runs into conduit, draws under the effect of lifting force, has guaranteed to creep into and has once finished with pipe.By diameter-enlarging drill bit, change traditional drilling technology and method, guarantee under the complex geological conditions environment, to creep into smoothly, thereby overcome the difficult problem of creeping into of complex geological conditions environment.
Be the utility model preferred embodiment in sum, all changes of making according to technical solutions of the utility model, the function of producing all belong to protection domain of the present utility model when not exceeding the scope of technical solutions of the utility model.
Claims (4)
1. diameter-enlarging drill bit, formed by bit body (1), spring catch (2), extended blades (3), hole enlargement blade (4), cutting blade (5), it is characterized in that having mounting groove (6) on bit body (1) wall, cutting blade (5) is installed in the bit body bottom, extended blades (3) is placed in the mounting groove (6), the top of extended blades (3) is connected with bit body (1), the junction is provided with spring catch (2), and extended blades (3) end is equipped with hole enlargement blade (4).
2. diameter-enlarging drill bit according to claim 1 is characterized in that extended blades (3) can rotate around the top, is 0 ~ 45 to spend at the lower expanded-angle of spring catch (2) effect.
3. diameter-enlarging drill bit according to claim 1 is characterized in that being provided with banking stop (7) on the mounting groove (6) of bit body (1).
4. diameter-enlarging drill bit according to claim 1 is characterized in that bit body also is furnished with auxiliary circle (8), is enclosed within the bit body bottom near cutting blade (5) position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220605170 CN202882766U (en) | 2012-11-16 | 2012-11-16 | Expanding drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220605170 CN202882766U (en) | 2012-11-16 | 2012-11-16 | Expanding drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882766U true CN202882766U (en) | 2013-04-17 |
Family
ID=48074206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220605170 Expired - Fee Related CN202882766U (en) | 2012-11-16 | 2012-11-16 | Expanding drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882766U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397404A (en) * | 2019-07-30 | 2019-11-01 | 中国矿业大学 | A kind of hydraulic machinery convolution cutting integrated drilling radial direction groover |
| CN110552711A (en) * | 2019-07-12 | 2019-12-10 | 广西大学 | Variable cross-section tunnel excavation test device and test excavation method thereof |
-
2012
- 2012-11-16 CN CN 201220605170 patent/CN202882766U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552711A (en) * | 2019-07-12 | 2019-12-10 | 广西大学 | Variable cross-section tunnel excavation test device and test excavation method thereof |
| CN110552711B (en) * | 2019-07-12 | 2021-08-31 | 广西大学 | Variable cross-section tunnel excavation test device and test excavation method thereof |
| CN110397404A (en) * | 2019-07-30 | 2019-11-01 | 中国矿业大学 | A kind of hydraulic machinery convolution cutting integrated drilling radial direction groover |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2692982A3 (en) | Near-bit borehole opener tool and method of reaming | |
| Jin et al. | Bit stick-out calculation for the deepwater conductor jetting technique | |
| CN204082014U (en) | A kind of combined type PDC drill bit | |
| CN204200083U (en) | A kind of drill stem type is with the micro-hole reaming tool of brill | |
| CN202882766U (en) | Expanding drill bit | |
| CN205047161U (en) | Dig soon and expand subdrilling head | |
| CN102797428B (en) | Well abandoning tool capable of locking position | |
| Bo et al. | Design of conductor soaking time in deepwater drilling | |
| CN202659146U (en) | Double-drilling combined drill structure suitable for drilling operation of oil well and horizontal well | |
| CN204754762U (en) | Drilling equipment for building | |
| CN202990859U (en) | Sediment-free drill bit | |
| CN205532276U (en) | Novel fried punching in irregularity ground device | |
| CN104165024A (en) | Engineering drilling device | |
| CN204386490U (en) | A kind of probing follow-up casing bit | |
| CN104405291A (en) | Combined in-situ shallow layer geotherm measurement drill | |
| CN204212685U (en) | A kind of engineering the drilling device | |
| CN203879385U (en) | Protective tube drill bit for depth-keeping static sounding | |
| CN204283225U (en) | A kind of combined type original position near-surface temperature survey drill bit | |
| CN204402365U (en) | A kind of long-spiral drilling machine expansion bit | |
| CN204646110U (en) | Bottom expanding drill | |
| CN204200136U (en) | Efficient well dressing tool | |
| CN203570206U (en) | End pressure-bearing type rock bolt reamer | |
| CN102678058A (en) | Special drill for geophysical prospecting | |
| CN203245831U (en) | Hard base shell ground surface detector embedding tool | |
| CN206860130U (en) | With brill formula Spiral borehole dressing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGJIANG GEOTECHNICAL ENGINEERING GENERAL COMPAN Free format text: FORMER OWNER: TANG WANJIN Effective date: 20140123 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400000 YUZHONG, CHONGQING TO: 430019 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140123 Address after: 430019 No. 1863 Jiefang Avenue, Jiang'an District, Hubei, Wuhan Patentee after: Changjiang Geotechnical Engineering General Company (Wuhan) Address before: 400000 No. three, 44 Zhongshan Road, Yuzhong District, Chongqing, No. 13 attached to China Patentee before: Tang Wanjin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20191116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |