CN101818621A - Hollow drill bit - Google Patents
Hollow drill bit Download PDFInfo
- Publication number
- CN101818621A CN101818621A CN201010156964A CN201010156964A CN101818621A CN 101818621 A CN101818621 A CN 101818621A CN 201010156964 A CN201010156964 A CN 201010156964A CN 201010156964 A CN201010156964 A CN 201010156964A CN 101818621 A CN101818621 A CN 101818621A
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- Prior art keywords
- hollow
- drill body
- hole
- boring bit
- drill bit
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Abstract
The invention relates to a hollow drill bit which comprises a drill bit body, a lifting part connected at the top of the drill bit body and breaking teeth arranged at the bottom of the drill bit body, and is characterized in that a hollow hole from top to bottom is arranged in the drill bit body. The utilization of the hollow drill bit can carry out deslagging while realizing the impact of the hollow drill bit and greatly improve the construction and production efficiency.
Description
Technical field
The present invention relates to a kind of hollow boring bit.
Background technology
Existing drill bit is a solid bit, and the shortcoming of its existence is: (1) Heavy Weight, and in the relatively-stationary situation of weight, the length of drill bit must be restricted, so guidance quality is good inadequately, becomes hole perpendicularity lower; (2) because solid bit is a cast-in-block, can't at will change the size of outside diameter, therefore same drill bit can not be constructed to the stake in piles with different footpath; (3) drill bit can produce wearing and tearing in work progress, and existing this solid bit can't in time obtain repairing, and influences construction quality and penetration rate; (4) the impact dynamics that produces on unit area of solid bit is little, and penetration rate is slow; (5) can not carry out deslagging in drill bit impact, production efficiency is low, and penetration rate is slow.
Summary of the invention
The object of the present invention is to provide a kind of hollow boring bit, it can carry out deslagging when hollow boring bit impacts, greatly improved construction production efficiency.
Technical solution of the present invention is to constitute like this, a kind of hollow boring bit, the broken tooth that it comprises drill body, is connected in the lifting part at drill body top and is located at the drill body bottom is characterized in that: be provided with top-down hollow hole in the body of drill body.
The operating principle of technique scheme of the present invention is described as follows: when constructed in the stake hole, make the drill body free-falling, the enormous impact power of utilizing the drill body free-falling to produce acts on the rock stratum broken tooth, because broken toilet article have very strong embedding rock ability, broken rock faster, make it become disintegrating slag, and disintegrating slag is suspended in the hollow hole and stake hole of hollow boring bit in the process of stirring repeatedly up and down of drill body.When in hollow hole, inserting aspirator, just can utilize aspirator to discharge the disintegrating slag that suspends from hollow hole in time.
Technique scheme of the present invention has also been done following further improvement:
For the ease of when hollow boring bit impacts, carrying out deslagging, be provided with the aspirator that stretches into from the last aperture of hollow hole in the hollow hole in the described hollow hole, leave spacing between at the bottom of the pump orifice of aspirator and the hole of hollow hole.
Described aspirator is preferably pump line.
For the ease of utilizing the stake in same hollow boring bit construction piles with different footpath, the periphery wall of described drill body is fixedly connected with annular belt.By changing the size of annular belt, just can change the size of effective bore diameter of hollow boring bit, the stake in construction piles with different footpath.
The periphery wall of described drill body is distributed with the stiffening rib of the vertical distribution of multiple tracks or vertical and cross direction profiles, and described annular belt is welded in the periphery of stiffening rib.
The wear-resisting iron of tubular around the bottom of described drill body is fixedly connected with at the bottom of the hole that is surrounded on hollow hole, described broken tooth are the alloy tooth that is welded in the wear-resisting iron of tubular bottom.
Compared to prior art, the present invention has the following advantages:
(1) product structure is reasonable, becomes the hole perpendicularity height: compare with solid bit, and the hollow boring bit of identical weight, its length is longer by about 30% than solid bit, and drill bit is long, and then guidance quality is good, so become the hole perpendicularity height.
(2) easy to process, single hollow boring bit can be by changing the size of annular belt, with the stake in construction piles with different footpath: by changing the size of annular belt, just can change the size of effective bore diameter of hollow boring bit, thus the stake directly of construction piles with different; And solid bit is a cast-in-block, can't at will change the size of drill bit.
(3) good welding performance, be convenient to that the job site processes hollow boring bit and operation such as reparation, make hollow boring bit can in time obtain repairing, guarantee that hollow boring bit remains intact in pore forming process: hollow boring bit can produce wearing and tearing at work progress, cause the hollow boring bit diameter to diminish, the alloy tooth destroys, and passes through field Welding, hollow boring bit is repaired timely, guaranteed construction quality and penetration rate.
(4) because hollow boring bit of the present invention is hollow, the impact great efforts that produce on unit area can guarantee that penetration rate is fast.
(5) central tube at hollow boring bit inserts aspirator, as pump line, carry with secondary elevator, penetration rate with hollow boring bit is put pump line, and pump line is remained and distance at the bottom of the hole, and disintegrating slag passes through hollow boring bit, can be by pump sucking-off sediment, the assurance hollow boring bit under the state that impacts, just can be realized deslagging all the time, greatly improves construction production efficiency.
(6) when construction cobble, lithosphere, but will cobble, rock hit powdered after deslagging, cobble, rock diameter less than 15cm can be directly hollow hole by hollow boring bit, by the pump line delivery port, the raising penetration rate.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Number in the figure explanation: 1, drill body, 2, lifting part, 3, broken tooth, 4, hollow hole, 5, aspirator, 6, annular belt, 7, stiffening rib, 8, the wear-resisting iron of tubular.
The specific embodiment
Below in conjunction with specification drawings and specific embodiments content of the present invention is elaborated:
Be the embodiment organigram of a kind of hollow boring bit provided by the invention as depicted in figs. 1 and 2, the broken tooth 3 that it comprises drill body 1, is connected in the lifting part 2 at drill body 1 top and is located at drill body 1 bottom is characterized in that: be provided with top-down hollow hole 4 in the body of drill body 1.During use, outside lifting gear is connected with drill body 1 by the lifting part 2 of being located at drill body 1 top, and drill body 1 is promoted and puts down.
Be provided with the aspirator 5 that stretches into from the last aperture of hollow hole 4 in the hollow hole 4 in the described hollow hole 4, leave spacing between at the bottom of the hole of the pump orifice of aspirator 5 and hollow hole 4.
Described aspirator 5 is preferably pump line.Certainly, when specifically implementing, can adopt other various devices that can aspirate disintegrating slag as required.
The periphery wall of described drill body 1 is fixedly connected with annular belt 6.
The periphery wall of described drill body 1 is distributed with the stiffening rib 7 of the vertical distribution of multiple tracks or vertical and cross direction profiles, and described annular belt 6 is welded in the periphery of stiffening rib 7.
The wear-resisting iron 8 of tubular around the bottom of described drill body 1 is fixedly connected with at the bottom of the hole that is surrounded on hollow hole 4, described broken tooth 3 is for being welded in the alloy tooth of the wear-resisting iron of tubular 8 bottoms.
Claims (6)
1. hollow boring bit, the broken tooth (3) that it comprises drill body (1), is connected in the lifting part (2) at drill body (1) top and is located at drill body (1) bottom is characterized in that: be provided with top-down hollow hole (4) in the body of drill body (1).
2. hollow boring bit according to claim 1, it is characterized in that: be provided with the aspirator (5) that stretches into from the last aperture of hollow hole (4) in the hollow hole (4) in the described hollow hole (4), leave spacing between at the bottom of the hole of the pump orifice of aspirator (5) and hollow hole (4).
3. hollow boring bit according to claim 2 is characterized in that: described aspirator (5) is a pump line.
4. according to claim 1 or 2 or 3 described hollow boring bits, it is characterized in that: the periphery wall of described drill body (1) is fixedly connected with annular belt (6).
5. hollow boring bit according to claim 4 is characterized in that: the periphery wall of described drill body (1) is distributed with the stiffening rib (7) of the vertical distribution of multiple tracks or vertical and cross direction profiles, and described annular belt (6) is welded in the periphery of stiffening rib (7).
6. hollow boring bit according to claim 1, it is characterized in that: the wear-resisting iron of tubular (8) around the bottom of described drill body (1) is fixedly connected with at the bottom of the hole that is surrounded on hollow hole (4), described broken tooth (3) is for being welded in the alloy tooth bottom the wear-resisting iron of tubular (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010156964A CN101818621A (en) | 2010-04-27 | 2010-04-27 | Hollow drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010156964A CN101818621A (en) | 2010-04-27 | 2010-04-27 | Hollow drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101818621A true CN101818621A (en) | 2010-09-01 |
Family
ID=42653874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010156964A Pending CN101818621A (en) | 2010-04-27 | 2010-04-27 | Hollow drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101818621A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883133A (en) * | 1988-10-24 | 1989-11-28 | Fletcher Gerald L | Combustion operated drilling apparatus |
| CN2293637Y (en) * | 1997-05-08 | 1998-10-07 | 西安华山工业公司 | Percussion drilling tool |
| CN201024897Y (en) * | 2007-04-06 | 2008-02-20 | 徐州工程学院 | A quick drill pole aiguille for drilling hole of bottom plate |
| US20080296069A1 (en) * | 2007-05-30 | 2008-12-04 | Nikola Ljubic | Novel core drill bit housing and core drill bit |
| CN201301667Y (en) * | 2008-11-25 | 2009-09-02 | 上海金泰工程机械有限公司 | Drill bit with integration of shock, rotation and dry slag removal |
| CN201671546U (en) * | 2010-04-27 | 2010-12-15 | 中建七局第三建筑有限公司 | Hollow drill bit |
-
2010
- 2010-04-27 CN CN201010156964A patent/CN101818621A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883133A (en) * | 1988-10-24 | 1989-11-28 | Fletcher Gerald L | Combustion operated drilling apparatus |
| CN2293637Y (en) * | 1997-05-08 | 1998-10-07 | 西安华山工业公司 | Percussion drilling tool |
| CN201024897Y (en) * | 2007-04-06 | 2008-02-20 | 徐州工程学院 | A quick drill pole aiguille for drilling hole of bottom plate |
| US20080296069A1 (en) * | 2007-05-30 | 2008-12-04 | Nikola Ljubic | Novel core drill bit housing and core drill bit |
| CN201301667Y (en) * | 2008-11-25 | 2009-09-02 | 上海金泰工程机械有限公司 | Drill bit with integration of shock, rotation and dry slag removal |
| CN201671546U (en) * | 2010-04-27 | 2010-12-15 | 中建七局第三建筑有限公司 | Hollow drill bit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100901 |