CN2374637Y - Diameter variable drilling mechanism for reinforced concrete bored concrete pile - Google Patents
Diameter variable drilling mechanism for reinforced concrete bored concrete pile Download PDFInfo
- Publication number
- CN2374637Y CN2374637Y CN 99228453 CN99228453U CN2374637Y CN 2374637 Y CN2374637 Y CN 2374637Y CN 99228453 CN99228453 CN 99228453 CN 99228453 U CN99228453 U CN 99228453U CN 2374637 Y CN2374637 Y CN 2374637Y
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- CN
- China
- Prior art keywords
- rod
- drill
- drilling rod
- utility
- model
- 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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- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a diameter variable drilling mechanism for a reinforced concrete bored concrete pile, which comprises a drill rod and a drill bit, wherein, the drill bit is composed of a center drill bit which is fixed on the drill rod and a section drill blade which is hinged on the drill rod; a lifting rod is arranged in the drill rod; the section drill blade is hinged with the lifting rod by a connecting rod; a diameter fixing ring is arranged outside the drill rod; a mud piston is arranged between the drill rod and the lifting rod. The section drill blade of the utility model is controlled by the lifting rod to be opened towards a periphery to expand a drilling range, which can obtain pile end heads of various ideal forms, and obtain larger bearing capacity and reduce material consumption under the condition of the same material. The utility model can make the most of a soil layer of lower bearing capacity to make load-bearing piles or pull resistance piles.
Description
The utility model relates to the utility model of a kind of highrise building and the used expandable nole drilling mechanism for deposited reinforced concrete pile of large-scale structure.
The datum hole of current highrise building and the used castinplace pile of large-scale structure base generally all adopts rig boring, punching, hand excavation to add the steel concrete retaining wall and squeezes into modes such as immersed tube pore-forming and realize, this wherein the advantage compared with alternate manner of rig bore mode be to be adapted to any soil layer, and the pile foundation hole can be anchored into basement rock, thereby the bearing capacity height, can not produce harmful effect again in the construction to building on every side; But traditional pile foundation hole is because the restriction of rig drill bit structure, can only be upper and lower,, will enlarge the diameter of rig drill bit as obtaining big soil layer bearing capacity face with pile foundation hole, footpath, perhaps increase the degree of depth of rig boring, so also just increased engineering cost, cost and construction period.
The purpose of this utility model provides a kind of expandable nole drilling mechanism for deposited reinforced concrete pile that can reduce engineering cost, construction period.
Expandable nole drilling mechanism for deposited reinforced concrete pile described in the utility model, include drilling rod and drill bit, it is characterized in that drill bit is fixed in center bit on the drilling rod and hinge by the middle part and is linked to the fan-shaped drill blade that can revolve expansion on the drilling rod and forms, be provided with a shadoof in the drilling rod, the outer top of drilling rod is provided with lug, and the bottom tube wall has groove; The groove that shadoof passes on the drilling rod is connected with fan-shaped drill blade middle part hinge through connecting rod, and the upper end of fan-shaped drill blade is connected with lug hinge on the drilling rod again, also is provided with a sizing ring on the drilling rod, also is provided with a bod between drilling rod and shadoof.
The above-mentioned fan-shaped drill blade of the utility model can be made the form that penetrates.
But the utility model reducing borehole drill construction, owing to be provided with fan-shaped drill blade, fan-shaped drill blade can be opened gradually by shadoof control when rod boring, counterboring towards periphery, thereby can obtain the stake termination of multiple ideal form, as the load stake of the big end, the stake of a plurality of load enlarged footing, be used for the up big and down small back taper stake of supporting etc.And its bore process is identical with traditional handicraft; Compare with traditional deposited reinforced concrete pile, same material can obtain bigger bearing capacity, or can reduce material consumption on the basis of same bearing capacity, and the soil layer of low bearing capacity is fully used.Compare with manually digging hole filling pile, both highly effective and safe saved the steel concrete retaining wall, can increase pile body frictional resistance bearing capacity partly again.Because pile crown can increase the range of application of stake, both can make pressure bearing pile, can do the uplift pile of slant-pull structure again.
The utility model example structure is as shown in drawings:
Fig. 1 is a structural representation of the present utility model.
In accompanying drawing 1, comprise drilling rod 1 in the utility model expandable nole drilling mechanism for deposited reinforced concrete pile, the top of drilling rod 1 is provided with center bit 8, and center bit 8 forms can be various; Be provided with a shadoof 2 in the drilling rod 1, drilling rod 1 top is shaped on lug 7, and the bottom is shaped on groove; Pass through groove, shadoof 2 is connected with an end hinge of connecting rod 6, the other end through connecting rod 6 is connected with fan-shaped drill blade 4 hinges again, the other end of fan-shaped drill blade 4 is connected with drilling rod 2 top lugs 7 hinges, in order to reduce the resistance of boring, fan-shaped drill blade 4 can be made the break-through form, also is provided with a sizing ring 3 on the drilling rod 2, also is provided with a bod 5 between drilling rod 2 and the shadoof 1; In order to increase application life, center bit 8 and fan-shaped drill blade 4 are welded with the alloy sword.
When using the boring of the utility model steel concrete diameter variable rig, as long as in the place that needs hole enlargement, by pressing down shadoof 1, via connecting rod 6, impel fan-shaped drill blade 4 to open that soil layer bores system around the scraping, hole as need taking-up drill bit, drilling rod 1, then need only pull-up shadoof 2, pack up fan-shaped drill blade 4, just can achieve the goal.
Claims (2)
1. expandable nole drilling mechanism for deposited reinforced concrete pile, include drilling rod and drill bit, it is characterized in that drill bit is fixed in center bit on the drilling rod and hinge by the middle part and is linked to the fan-shaped drill blade that can revolve expansion on the drilling rod and forms, be provided with a shadoof in the drilling rod, the outer top of drilling rod is provided with lug, and the bottom tube wall has groove; The groove that shadoof passes on the drilling rod is connected with fan-shaped drill blade middle part hinge through connecting rod, and the upper end of fan-shaped drill blade is connected with lug hinge on the drilling rod again, and the drilling rod outer upper ends also is provided with a sizing ring, also is provided with a bod between drilling rod and shadoof.
2. expandable nole drilling mechanism for deposited reinforced concrete pile according to claim 1 is characterized in that described fan-shaped drill blade can make the form that penetrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228453 CN2374637Y (en) | 1999-05-21 | 1999-05-21 | Diameter variable drilling mechanism for reinforced concrete bored concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228453 CN2374637Y (en) | 1999-05-21 | 1999-05-21 | Diameter variable drilling mechanism for reinforced concrete bored concrete pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2374637Y true CN2374637Y (en) | 2000-04-19 |
Family
ID=34017838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99228453 Expired - Fee Related CN2374637Y (en) | 1999-05-21 | 1999-05-21 | Diameter variable drilling mechanism for reinforced concrete bored concrete pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2374637Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873431A (en) * | 2021-01-22 | 2021-06-01 | 温州职业技术学院 | High-efficient puncher of furniture board |
-
1999
- 1999-05-21 CN CN 99228453 patent/CN2374637Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873431A (en) * | 2021-01-22 | 2021-06-01 | 温州职业技术学院 | High-efficient puncher of furniture board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |