CN202990859U - Sediment-free drill bit - Google Patents
Sediment-free drill bit Download PDFInfo
- Publication number
- CN202990859U CN202990859U CN 201220740781 CN201220740781U CN202990859U CN 202990859 U CN202990859 U CN 202990859U CN 201220740781 CN201220740781 CN 201220740781 CN 201220740781 U CN201220740781 U CN 201220740781U CN 202990859 U CN202990859 U CN 202990859U
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- CN
- China
- Prior art keywords
- drill bit
- sediment
- cover plate
- drill
- drilling rod
- 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 - Lifetime
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Abstract
The utility model relates to a sediment-free drill bit which comprises a twin-screw double-end drill bit. A freely telescopic drill tip (2) is arranged at the bottom of a drill rod (1) of the twin-screw double-end drill bit. The telescopic drill tip (2) is composed of a cover plate (3), a hanging lug (4) and cutting teeth (8). the front end of the hanging lug (4) is fixed on the cover plate (3), the tail end of the hanging lug (4) extends to the outside of the drill rod (1) through a guiding box (6) positioned on an outer wall of the drill rod (1), the telescopic degree of the drill tip (2) is controlled through a stroke locating pin (7) arranged at the tail end of the hanging lug (4), a concrete guide plate (5) is arranged on the cover plate (3), and dimensions of the concrete guide plate (5) can be adjusted according to the diameter of the drill rod (1), so that the concrete guide plate (5) is in sealed connection with an opening positioned at the bottom of the drill rod (1). The sediment-free drill bit is reasonable in structure and convenient to use, can effectively solve the problem of sediment accumulation at the bottom of a pile foundation, and has wide market prospect.
Description
Technical field
The utility model relates to the drill bit of drilling machine technical field, and is especially a kind of without the sediment drill bit.
Background technology
At present, but the long spiral drilling head of concrete perfusion, and because the filling concrete valve of its bottom apex point is laterally opened, the sediment of pile foundation bottom is deposited in the concrete base of perfusion, has seriously restricted the application of long spiral drilling head in the pile foundation industry.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of rational in infrastructure, automatically retractable, long service life, can effectively solve pile foundation bottom sediment pile up problem without the sediment drill bit.
The technical solution of the utility model is: a kind of without the sediment drill bit, comprise two spiral shell Two head drill bits, and it is characterized in that: the apex point that is provided with automatically retractable bottom the drilling rod of described pair of spiral shell Two head drill bit.
Described telescopic tip is comprised of cover plate, hangers, cutting teeth, and the front end of described hangers is fixing on the cover board, and tail end extends to the drilling rod outside by the orientating box on drilling-rod external wall;
Described cover plate can be connected with the drilling rod bottom opening is airtight.
Described hangers tail end is provided with the stroke alignment pin.
Be provided with the concrete deflector on described cover plate.
The diameter of above-mentioned pair of spiral shell Two head drill bit is 600～1200cm.
The size of above-mentioned cover plate can be adjusted according to the size of drill pipe diameter.
The utility model is by improving existing drill bit, at first after pile foundation boring is complete, drilling rod is mentioned certain altitude, the telescopic tip that utilizes the drilling rod top carries out concrete perfusion operation at the bottom of to stake, and then drilling rod is dropped to pile foundation bottom, sediment and concrete-agitating at the bottom of utilizing cutting teeth on apex point with stake are even, can effectively solve the problem that pile bottom sediment can't be processed, therefore should have the wide market space without the sediment drill bit.
Description of drawings
Fig. 1 is that the utility model is without sediment drill bit schematic diagram.
1, drilling rod, 2, apex point, 3, cover plate, 4, hangers, 5, the concrete deflector, 6, orientating box, 7, the stroke alignment pin, 8, cutting teeth.
The specific embodiment
A kind of without the sediment drill bit, as shown in Figure 1, comprise two spiral shell Two head drill bits, drilling rod 1 bottom of described pair of spiral shell Two head drill bit is provided with the apex point 2 of automatically retractable, described telescopic tip 2 is comprised of cover plate 3, hangers 4, cutting teeth 8, the front end of described hangers 4 is fixed on cover plate 3, and tail end extends to drilling rod 1 outside by the orientating box 6 on drilling rod 1 outer wall, and the telescopic level of the 7 pairs of apex points 2 of stroke alignment pin by described hangers 4 tail end settings is controlled; Be provided with concrete deflector 5 on described cover plate 3, and its size can adjust according to the size of drilling rod 1 diameter, make itself and airtight connection of drilling rod 1 bottom opening.
The geological formations in the most of provinces of the central China such as this drill bit is applicable to banket, mud, silt, clay, sandy soil, cobble, middle weathering and gentle breeze, city, and be applicable to diameter and be the various model long-spiral drilling machines between 600～1200cm, will make huge contribution for the construction quality that improves the pile foundation industry.
The above; it is only the better specific embodiment of this practicality; but the utility model protection domain is not limited to this, is equal to replacement or changes according to the technical solution of the utility model and inventive concept thereof, within all should being encompassed in protection domain of the present utility model.
Claims (5)
1. one kind without the sediment drill bit, comprises two spiral shell Two head drill bits, it is characterized in that: the drilling rod of described pair of spiral shell Two head drill bit (1) bottom is provided with the apex point (2) of automatically retractable.
2. according to claim 1 a kind of without the sediment drill bit, it is characterized in that: described telescopic tip (2) is comprised of cover plate (3), hangers (4), cutting teeth (8), the front end of described hangers (4) is fixed on cover plate (3), and tail end extends to drilling rod (1) outside by the orientating box (6) on drilling rod (1) outer wall; Described cover plate (3) can with drilling rod (1) the airtight connection of bottom opening.
3. according to claim 2 a kind of without the sediment drill bit, it is characterized in that: described hangers (4) tail end is provided with stroke alignment pin (7).
4. according to claim 2 a kind of without the sediment drill bit, it is characterized in that: be provided with concrete deflector (5) on described cover plate (3).
5. according to claim 1-4 is arbitrary described a kind of without the sediment drill bit, and it is characterized in that: the diameter of described pair of spiral shell Two head drill bit is 600～1200cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740781 CN202990859U (en) | 2012-12-30 | 2012-12-30 | Sediment-free drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740781 CN202990859U (en) | 2012-12-30 | 2012-12-30 | Sediment-free drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990859U true CN202990859U (en) | 2013-06-12 |
Family
ID=48562050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220740781 Expired - Lifetime CN202990859U (en) | 2012-12-30 | 2012-12-30 | Sediment-free drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990859U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894803A (en) * | 2014-03-17 | 2014-07-02 | 中冶集团武汉勘察研究院有限公司 | Manufacturing method of spiral soil stirring type drilling rig |
| CN103894804A (en) * | 2014-03-17 | 2014-07-02 | 中冶集团武汉勘察研究院有限公司 | Method for manufacturing cylindrical mud stirring type drilling tool |
| CN115839218A (en) * | 2023-02-20 | 2023-03-24 | 陕西晖煌建筑劳务有限公司 | Highway construction rotary drilling device |
-
2012
- 2012-12-30 CN CN 201220740781 patent/CN202990859U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894803A (en) * | 2014-03-17 | 2014-07-02 | 中冶集团武汉勘察研究院有限公司 | Manufacturing method of spiral soil stirring type drilling rig |
| CN103894804A (en) * | 2014-03-17 | 2014-07-02 | 中冶集团武汉勘察研究院有限公司 | Method for manufacturing cylindrical mud stirring type drilling tool |
| CN103894803B (en) * | 2014-03-17 | 2017-01-04 | 中冶集团武汉勘察研究院有限公司 | A kind of preparation method of spiral type stirring earth formula drilling tool |
| CN115839218A (en) * | 2023-02-20 | 2023-03-24 | 陕西晖煌建筑劳务有限公司 | Highway construction rotary drilling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161116 Address after: 333000 Jiangxi Province, Jingdezhen City Changjiang district fish Li Industrial Park, No. fifteenth Patentee after: JIANGXI HUANQIU GEOTECHNICAL TECHNOLOGY Co.,Ltd. Address before: 333000 Jiangxi Province, Jingdezhen city Zhushan District pear garden in Shangri-La 27 Patentee before: Ma Chungen |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |