CN205349230U - A anti - drill bit that circulates for pile foundation drilling construction - Google Patents
A anti - drill bit that circulates for pile foundation drilling construction Download PDFInfo
- Publication number
- CN205349230U CN205349230U CN201620032113.4U CN201620032113U CN205349230U CN 205349230 U CN205349230 U CN 205349230U CN 201620032113 U CN201620032113 U CN 201620032113U CN 205349230 U CN205349230 U CN 205349230U
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- CN
- China
- Prior art keywords
- guard ring
- drill bit
- drilling rod
- protective shroud
- drilling
- 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
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Abstract
The utility model relates to an anti - drill bit that circulates for pile foundation drilling construction, including protective shroud, drill bit blade, drilling rod connecting piece, the drill bit blade with the lower extreme welded connection of protective shroud and drilling rod connecting piece still includes a supplementary protective shroud, supplementary protective shroud is located the top of protective shroud, supplementary protective shroud with the diameter of protective shroud equals, supplementary protective shroud, protective shroud, drilling rod connecting piece three's axle center coincidence, supplementary protective shroud inner wall through many radial settings the connecting plate and drilling rod connecting piece welded connection.
Description
Technical field
This utility model relates to Construction of Pile Bedding Boring apparatus field, particularly relates to a kind of reverse circulation drill bit for pile foundation stake holes drilling construction.
Background technology
In Construction of Pile Bedding Boring process, reverse circulation drilling is widely used due to pore-forming efficiency is high, speed of application is fast feature.Reverse circulation drill bit structure conventional at present is as shown in Figure 1, mainly include guard ring 1, bit blades 2 and drilling rod connector 3, bit blades 2 is connected with the lower end of guard ring 1 and drilling rod connector 3, guard ring 1 and drilling rod connector 3 are welded to connect by connecting plate, during drilling construction, drilling rod connector jointed rod, drill bit rotates under drilling rod drives, broken ground, is drilled down into pore-forming.
But in use often there is problems with in the clean-out machine of routine:
1, when long pile foundation construction, affected by uneven geology, become hole perpendicularity easily beyond regulating scope；
2, on the water in boring procedure, during such as solid bed, rig vibration is big, and water drilling platform is caused potential safety hazard；
3, conventional drill bit is in drilling process, easily occurs drill bit to lopsidedness, drill bit deviation stake holes design stake position, when carrying brill after pore-forming, owing to deviation occurs in perpendicularity, drill chuck phenomenon bottom steel pile casting often occurs during through casing.
Summary of the invention
The purpose of this utility model is in that in the premise guaranteeing to meet reverse circulation drilling pore-forming, conventional reverse circulation drill bit is improved, executes high construction quality to carry, reach drilling and forming hole effect more excellent, reduces bit freezing risk, and reduces the impact on drilling platform.
For achieving the above object, the technical scheme that this utility model is taked is as follows:
A kind of reverse circulation drill bit for Construction of Pile Bedding Boring, including guard ring, bit blades, drilling rod connector, the lower end of described bit blades and described guard ring and drilling rod connector is welded to connect, it is characterized in that: also include an auxiliary guard ring, described auxiliary guard ring is positioned at the top of described guard ring, the equal diameters of auxiliary guard ring and described guard ring, described auxiliary guard ring, guard ring, drilling rod connector three axis coinciding, described auxiliary guard ring inwall is welded to connect by the connecting plate of many radial settings and described drilling rod connector.
This utility model in use has the advantage that relative to conventional drill bit
1, owing to being provided with auxiliary guard ring, in boring procedure, reach upper and lower two-layer position-limiting action, when uneven geology, more can guarantee that into hole perpendicularity.
2, the drill bit after improving, owing to being provided with two-layer guard ring, it is thus possible to not necessarily depart from design stake position when ensureing bit bore, and when promoting dismounting drilling rod, does not occur casing to block the accident of drill bit.
3, owing to being provided with auxiliary guard ring, drill bit adds deadweight, the inertia of drilling rod in drilling process is increased while reducing drill speed, when increasing by one layer of guard ring location, in drilling process, drilling rod vibration is little, on the water on drilling platform during operation, reduce the rig vibration harmful effect to drilling platform.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing drill bit；
Fig. 2 is drill bit structure schematic diagram of the present utility model；
Fig. 3 is the attachment structure schematic diagram of auxiliary guard ring of the present utility model and drilling rod connector.
Detailed description of the invention
As shown in Figure 2 and Figure 3, this utility model includes guard ring 1, bit blades 2, drilling rod connector 3, the lower end of described bit blades and described guard ring and drilling rod connector is welded to connect, also include an auxiliary guard ring 4, described auxiliary guard ring 4 is positioned at the top of described guard ring 1, the equal diameters of auxiliary guard ring 4 and described guard ring 1, described auxiliary guard ring 4, guard ring 1, drilling rod connector 3 three axis coinciding, described auxiliary guard ring 4 inwall is welded to connect by the connecting plate of many radial settings 5 and described drilling rod connector 3.
When this utility model is embodied as, can be welded to connect connecting reinforcing bar 6 by many between the lower limb of the top edge of described guard ring 1 and described auxiliary guard ring 4, to ensure globality and the stability of drill bit structure.
The upper end of drilling rod connector in use, is connected by this utility model with drilling rod, and drilling rod drives drill bit to rotate.General bit bore perpendicularity generation deviation, is easiest to occur when drill bit is through casing.In this utility model boring procedure, when guard ring is passed down through casing, auxiliary guard ring is still in casing, the perpendicularity of drill bit is played the role of positioning, when assisting guard ring through casing, guard ring play the role of positioning, it is thus possible to ensure that drill bit not necessarily departs from design stake position, ensure vertical degree of the peg hole compliant, thus ensureing construction quality.When pore-forming carries brill, without bit freezing phenomenon occurs.
When constructing on the water, as run into hard geological stratification, can suitably reduce rotating speed, to reduce the rig vibration harmful effect to drilling platform.This utility model is owing to being provided with auxiliary guard ring, and drill bit adds deadweight, increases the rotator inertia of drilling rod in drilling process while reducing drill speed, and drilling efficiency can't reduce.
Claims (2)
1. the reverse circulation drill bit for Construction of Pile Bedding Boring, including guard ring, bit blades, drilling rod connector, the lower end of described bit blades and described guard ring and drilling rod connector is welded to connect, it is characterized in that: also include an auxiliary guard ring, described auxiliary guard ring is positioned at the top of described guard ring, the equal diameters of auxiliary guard ring and described guard ring, described auxiliary guard ring, guard ring, drilling rod connector three axis coinciding, described auxiliary guard ring inwall is welded to connect by the connecting plate of many radial settings and described drilling rod connector.
2. the reverse circulation drill bit for Construction of Pile Bedding Boring according to claim 1, it is characterised in that: connect reinforcement welding by many between top edge and the lower limb of described auxiliary guard ring of described guard ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032113.4U CN205349230U (en) | 2016-01-13 | 2016-01-13 | A anti - drill bit that circulates for pile foundation drilling construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032113.4U CN205349230U (en) | 2016-01-13 | 2016-01-13 | A anti - drill bit that circulates for pile foundation drilling construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349230U true CN205349230U (en) | 2016-06-29 |
Family
ID=56174500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620032113.4U Expired - Fee Related CN205349230U (en) | 2016-01-13 | 2016-01-13 | A anti - drill bit that circulates for pile foundation drilling construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205349230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622826A (en) * | 2021-08-12 | 2021-11-09 | 中电建路桥集团有限公司 | Special drill bit of pile foundation construction pore-forming under complicated geological conditions |
-
2016
- 2016-01-13 CN CN201620032113.4U patent/CN205349230U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622826A (en) * | 2021-08-12 | 2021-11-09 | 中电建路桥集团有限公司 | Special drill bit of pile foundation construction pore-forming under complicated geological conditions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20220113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |