CN201671546U - Hollow drill bit - Google Patents
Hollow drill bit Download PDFInfo
- Publication number
- CN201671546U CN201671546U CN2010201717729U CN201020171772U CN201671546U CN 201671546 U CN201671546 U CN 201671546U CN 2010201717729 U CN2010201717729 U CN 2010201717729U CN 201020171772 U CN201020171772 U CN 201020171772U CN 201671546 U CN201671546 U CN 201671546U
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- Prior art keywords
- hollow
- drill body
- hole
- boring bit
- drill bit
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- Expired - Lifetime
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Abstract
The utility model relates to a hollow drill bit, which comprises a drill bit body, a hanging part connected to the top of the drill bit body, and crushing teeth arranged at the bottom of the drill bit body, characterized in that, hollow holes from top to bottom are provided in the drill bit body. According to the hollow drill bit of the utility model, the slag can be discharged when the impact of the hollow drill bit is implemented, thereby improving the construction production efficiency greatly.
Description
Technical field
The utility model 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 purpose of this utility model is to provide a kind of hollow boring bit, and it can carry out deslagging when hollow boring bit impacts, greatly improved construction production efficiency.
Technical solutions of the utility model are 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 the utility model technique scheme 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.
The utility model technique scheme 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 utlity model has following advantage:
(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 the utility model hollow boring bit 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 the utility model structural representation.
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 the utility model content is elaborated:
The embodiment organigram of a kind of hollow boring bit that provides for the utility model 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 |
|---|---|---|---|
| CN2010201717729U CN201671546U (en) | 2010-04-27 | 2010-04-27 | Hollow drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201717729U CN201671546U (en) | 2010-04-27 | 2010-04-27 | Hollow drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671546U true CN201671546U (en) | 2010-12-15 |
Family
ID=43328958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201717729U Expired - Lifetime CN201671546U (en) | 2010-04-27 | 2010-04-27 | Hollow drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201671546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818621A (en) * | 2010-04-27 | 2010-09-01 | 中建七局第三建筑有限公司 | Hollow drill bit |
-
2010
- 2010-04-27 CN CN2010201717729U patent/CN201671546U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818621A (en) * | 2010-04-27 | 2010-09-01 | 中建七局第三建筑有限公司 | Hollow drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CSCEC STRAIT CONSTRUCTION AND DEVELOPMENT CO., LTD Free format text: FORMER NAME: THE THIRD COMPANY OF CHINA SEVENTH ENGINEERING BUREAU CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 98-1 No. 350003 Fujian province Fuzhou Mawei District Jiangbin East Avenue Patentee after: CSCEC Strait Construction and Development Co., Ltd. Address before: Fuzhou City, Fujian Province, 350000 North Road, No. 148 in the construction of the third construction company seven Patentee before: The Third Company of China Seventh Engineering Bureau Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |
|
| CX01 | Expiry of patent term |