CN204571866U - The syndeton of CFG stake full screw earth auger drill bit and drilling rod - Google Patents
The syndeton of CFG stake full screw earth auger drill bit and drilling rod Download PDFInfo
- Publication number
- CN204571866U CN204571866U CN201520192609.3U CN201520192609U CN204571866U CN 204571866 U CN204571866 U CN 204571866U CN 201520192609 U CN201520192609 U CN 201520192609U CN 204571866 U CN204571866 U CN 204571866U
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- China
- Prior art keywords
- drill bit
- drilling rod
- double wedge
- connecting rod
- central tube
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Abstract
The utility model discloses the syndeton of a kind of CFG stake full screw earth auger drill bit and drilling rod, drilling rod central tube bottom inwall is fixed with anti-decylization, and drill bit is connected with the hanger bar be located at above anti-decylization by connecting rod, and described drill bit is threaded with connecting rod; Described drilling rod central tube bottom is provided with multiple double wedge, and the direction of rotation of described double wedge and the direction of rotation of connecting rod screw thread are oppositely arranged, and are arranged with skewed slot outside described bit upper end, and described skewed slot engages with double wedge and drill bit and drilling rod central tube are formed and seals; By the effect of double wedge and skewed slot when advantage is to hole, make drilling rod drive bit, need when carrying pipe pumping of concrete to reversely rotate, consistent with the direction that drill bit is threaded with connecting rod, even if under concrete impact, be also not easy drill bit and connecting rod are departed from.
Description
Technical field
The utility model relates to a kind of piling machinery, especially relates to the syndeton of a kind of CFG stake full screw earth auger drill bit and drilling rod.
Background technology
CFG (Cement Fly-ash Gravel, CFG) full screw earth auger pore-forming is adopted, by drilling rod central tube, concrete pumping is carried out CFG pile driving construction, can once complete by Completion of Drilling Hole one machine, pile-forming speed is fast, and pile body can utilize industrial waste flyash as admixture, makes construction costs greatly reduce, be used in high-rise and super highrise building.CFG stake full screw earth auger when holing needs to close drill bit and drilling rod central tube, and when carrying pipe pumping of concrete be the effective diameter ensureing engineering pile, need to reversely rotate and slowly promote, and open drill bit and drilling rod central tube, also namely drill bit and drilling rod central tube are separate type.And the replacing conveniently after bit damage, adopt between connecting rod under existing full screw earth auger drill bit and hanger bar and be fixed by socket, when putting forward pipe pumping of concrete pressure and filling with, concrete is after drill bit and drilling rod central tube are opened, meeting drill hammer, likely cause the disengaging of drill bit and connecting rod (why not comes off door), cause full screw earth auger to be stopped work after completing this stake, affect programming.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of when carrying pipe pumping of concrete drill bit not easily there is the syndeton of why not CFG stake full screw earth auger drill bit of coming off of door and drilling rod.
The utility model solves the problems of the technologies described above adopted technical scheme: the syndeton of a kind of CFG stake full screw earth auger drill bit and drilling rod, drilling rod central tube bottom inwall is fixed with anti-decylization, drill bit is connected with the hanger bar be located at above anti-decylization by connecting rod, and described drill bit is threaded with connecting rod; Described drilling rod central tube bottom is provided with multiple double wedge, and the direction of rotation of described double wedge and the direction of rotation of connecting rod screw thread are oppositely arranged, and are arranged with skewed slot outside described bit upper end, and described skewed slot engages with double wedge and drill bit and drilling rod central tube are formed and seals.
Compared with prior art, by the effect of double wedge and skewed slot when the utility model has the advantage of boring, drilling rod is made to drive bit, need when carrying pipe pumping of concrete to reversely rotate, consistent with the direction that drill bit is threaded with connecting rod, even if under concrete impact, be also not easy drill bit and connecting rod are departed from.
As improvement, the minor face of described double wedge and the plane orthogonal at place, drilling rod central tube bottom.
As improvement, the angle of the projection on axial plane of the arc-shaped side of described double wedge and minor face is 60 °.
Accompanying drawing explanation
Fig. 1 is the utility model drill bit and drilling rod central tube structural representation when closing.
Fig. 2 is the utility model drill bit and drilling rod central tube structural representation when opening.
Fig. 3 is the A-A sectional view of Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
This preferred embodiment is the syndeton of a kind of CFG stake full screw earth auger drill bit and drilling rod as shown in Figure 1 to Figure 3, drilling rod central tube 11 bottom inwall is fixed with anti-decylization 12, drill bit 2 is connected with the hanger bar 4 be located at above anti-decylization 12 by connecting rod 3, and drill bit 2 is threaded with connecting rod 3; Drilling rod central tube 11 bottom is provided with multiple double wedge 13, and the direction of rotation of double wedge 13 and the direction of rotation of connecting rod 3 screw thread are oppositely arranged, and drill bit 2 is arranged with skewed slot 21 outside upper end, and skewed slot 21 engages with double wedge 13 and drill bit 2 and drilling rod central tube 11 are formed and seals.
In the present embodiment, the direction of rotation of connecting rod 3 screw thread is counterclockwise, and the direction of rotation of double wedge 13 is clockwise, and also i.e. boring clockwise, carries brill counterclockwise.Preferably, double wedge 13 is 4 and is circumferentially uniformly distributed, the minor face of double wedge 13 and the plane orthogonal at place, drilling rod central tube 11 bottom, and the angle a of the projection of the arc-shaped side of double wedge 13 on axial plane and minor face is 60 °, during boring, double wedge 13 and skewed slot 21 wall is stressed relatively good.
Claims (3)
1. the syndeton of a CFG stake full screw earth auger drill bit and drilling rod, drilling rod central tube (11) bottom inwall is fixed with anti-decylization (12), drill bit (2) is connected with the hanger bar (4) being located at anti-decylization (12) top by connecting rod (3), it is characterized in that: described drill bit (2) is threaded with connecting rod (3); Described drilling rod central tube (11) bottom is provided with multiple double wedge (13), the direction of rotation of described double wedge (13) and the direction of rotation of connecting rod (3) screw thread are oppositely arranged, be arranged with skewed slot (21) outside described drill bit (2) upper end, described skewed slot (21) engages with double wedge (13) and drill bit (2) and drilling rod central tube (11) is formed and seals.
2. the syndeton of CFG stake full screw earth auger drill bit according to claim 1 and drilling rod, is characterized in that: the minor face of described double wedge (13) and the plane orthogonal at drilling rod central tube (11) place, bottom.
3. the syndeton of CFG stake full screw earth auger drill bit according to claim 2 and drilling rod, is characterized in that: the angle of the projection on axial plane of the arc-shaped side of described double wedge (13) and minor face is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520192609.3U CN204571866U (en) | 2015-04-01 | 2015-04-01 | The syndeton of CFG stake full screw earth auger drill bit and drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520192609.3U CN204571866U (en) | 2015-04-01 | 2015-04-01 | The syndeton of CFG stake full screw earth auger drill bit and drilling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204571866U true CN204571866U (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520192609.3U Active CN204571866U (en) | 2015-04-01 | 2015-04-01 | The syndeton of CFG stake full screw earth auger drill bit and drilling rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204571866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804670A (en) * | 2016-03-11 | 2016-07-27 | 柳超 | Drill rod connecting structure |
| CN114319304A (en) * | 2021-12-06 | 2022-04-12 | 北京建工四建工程建设有限公司 | Cement fly ash gravel pile combined column hammer impact pile expanding structure and construction method |
-
2015
- 2015-04-01 CN CN201520192609.3U patent/CN204571866U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804670A (en) * | 2016-03-11 | 2016-07-27 | 柳超 | Drill rod connecting structure |
| CN114319304A (en) * | 2021-12-06 | 2022-04-12 | 北京建工四建工程建设有限公司 | Cement fly ash gravel pile combined column hammer impact pile expanding structure and construction method |
| CN114319304B (en) * | 2021-12-06 | 2023-09-22 | 北京建工四建工程建设有限公司 | Pile-punching and expanding structure of cement fly ash gravel pile combined column hammer and construction method |
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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 | ||
| CP02 | Change in the address of a patent holder |
Address after: 315104, No. 3, No. 818, Qiming Road, Ningbo, Zhejiang, Yinzhou District, 22 Patentee after: NINGBO ZHONGZHOU BUILDING ENGINEERING CO., LTD. Address before: 315104, Zhejiang, Ningbo, Yinzhou District should be named 818, No. 3, No. 22 Patentee before: NINGBO ZHONGZHOU BUILDING ENGINEERING CO., LTD. |