CN204646109U - Circular bore expands drill with ferrule tool - Google Patents
Circular bore expands drill with ferrule tool Download PDFInfo
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- CN204646109U CN204646109U CN201520330587.2U CN201520330587U CN204646109U CN 204646109 U CN204646109 U CN 204646109U CN 201520330587 U CN201520330587 U CN 201520330587U CN 204646109 U CN204646109 U CN 204646109U
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- expands
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- pile cutoff
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Abstract
The utility model discloses a kind of circular bore and expand drill with ferrule tool, comprise the drill bit of hollow, be positioned at the middle drilling rod of drill bit and be arranged on the guide cylinder of drilling rod lower end, described drill bit comprises lifting boot segment, standard expands pile cutoff and teeth, the upper end that described standard expands pile cutoff is connected with lifting boot segment, the standard that is arranged on described teeth expands on the end opening outer wall of pile cutoff, described drilling rod is connected with drill bit inwall by web, described guide cylinder is positioned at the below that standard expands pile cutoff, and the cross section that described standard expands pile cutoff is square, rectangle or trapezoidal.It can be foursquare that the utility model expands drill with ferrule head, also can be rectangle or trapezoidal, to meet the needs of structure stress.
Description
Technical field
The utility model relates to foundation pit enclosure structure field, refers to that a kind of circular bore expands drill with ferrule tool particularly.
Background technology
The open cut deep footing groove enclosing structure of underground railway and highrise building, except adopting diaphragm wall, generally adopts bored pile more.Traditional drilled pile is circular cross-section, but its poor mechanical characteristics easily causes the waste of material and cost to increase.
Utility model content
The purpose of this utility model is exactly will provide a kind of the secondary circular bore of creeping into squarely hole can expand drill with ferrule tool.
The utility model comprise hollow drill bit, be positioned at the drilling rod in the middle of drill bit and be arranged on the guide cylinder of drilling rod lower end, described drill bit comprises lifting boot segment, standard expands pile cutoff and teeth, the upper end that described standard expands pile cutoff is connected with lifting boot segment, the standard that is arranged on described teeth expands on the end opening outer wall of pile cutoff, described drilling rod is connected with drill bit inwall by web, described guide cylinder is positioned at the below that standard expands pile cutoff, and the cross section that described standard expands pile cutoff is square, rectangle or trapezoidal.
The beneficial effects of the utility model are as follows:
Substantially continue to use traditional bored pile technology, increase plant as little as possible; First can be drilled to circular hole during use, rear the utility model secondary creeps into squarely hole, and it can be foursquare for expanding drill with ferrule head, can be also rectangle or trapezoidal, can adopt square, rectangle or trapezoidal reinforcing cage, make arrangement of reinforcement more economical, reasonable after being drilled to square hole.Because side's (square) shape stake cross sectional shape is reasonable, effectively can play the effect of reinforcing bar, to meet the needs of structure stress, compare as calculated under identical internal force condition, side's (square b*h) shape stake can reduce arrangement of reinforcement more than 50% than circular stake (r=b), and economic benefit is very remarkable.
Accompanying drawing explanation
Fig. 1 is that the utility model circular bore expands drill with ferrule lamps structure schematic diagram
Fig. 2 is that rectangle standard expands pile cutoff cross sectional representation
Fig. 3 Trapezoidal expands pile cutoff cross sectional representation
Fig. 4 is that holes expands drill with ferrule leader standard expansion pile cutoff cross sectional representation
Fig. 5 is that drill with ferrule leader standard expansion pile cutoff cross sectional representation is expanded in three holes
Fig. 6 is A type casing cross sectional representation
Fig. 7 is Type B casing cross sectional representation
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of circular bore that the utility model relates to expands drill with ferrule tool, comprise the drill bit 1 of hollow, be positioned at the drilling rod 2 in the middle of drill bit 1 and be arranged on the guide cylinder 3 of drilling rod 2 lower end, drill bit 1 is hollow structure, be convenient to mud circulation and deslagging, described drill bit 1 comprises the lifting boot segment 11 from top to bottom arranged, standard expands pile cutoff 12 and teeth 13, the upper end that described standard expands pile cutoff 12 is connected with lifting boot segment 11, the length that standard expands pile cutoff 12 should not be less than 1.5m, in order to retaining wall and guiding, the standard that is arranged on described teeth 13 expands on the end opening outer wall of pile cutoff 12, described drilling rod 2 is connected with drill bit 1 inwall by web 4, drilling rod 2 top can be connected with stake machine, described guide cylinder 3 is positioned at the below that standard expands pile cutoff 12, the cross section that described standard expands pile cutoff 12 is square, rectangle or trapezoidal.The outside dimension suitable for reading of described lifting boot segment 11 is slightly less than the external diameter that standard expands pile cutoff 12, is convenient to guide promote.The outside dimension of described guide cylinder 3 is greater than the external diameter that standard expands pile cutoff 12, and guide cylinder 3 diameter can rule of thumb slightly larger than the intended diameter of circular hole.
The utility model is applicable to the Quaternary Strata that can do drilled pile except ovum, gravel substantially.This drilling tool is welded primarily of steel plate and shaped steel.Standard expands the square that pile cutoff 12 can be D*D, also can be the rectangle or trapezoidal of D*H.D is Circularhole diameter, and H is the height of square-section.When geological conditions allows, also 2 ~ 3 circular holes can be digged into an oblong aperture.
Square hole well head casing 5 is divided into two kinds: have the A type casing of guiding wall 6 and the Type B casing without guiding wall 6.Square opening is different from circular hole, and the self-stable ability of square opening is poorer than circular hole.Therefore, square hole well head casing 5 barrel has larger internal force, needs the rigidity suitably increasing square hole well head square hole well head casing 5 barrel.When there being guiding wall 6, individual layer steel plate can being used by guiding wall 6 side, meeting native side open web type barrel, i.e. A type casing; When without guiding wall 6, square hole well head casing 5 surrounding all adopts open web type barrel, i.e. Type B casing.Square hole well head casing 5, when actual fabrication, is still needed and is considered necessary construction surplus.
Be drilled on the basis of circular hole by traditional handicraft, creeping into squarely hole, rectangle or trapezoidal hole with expansion drill with ferrule head secondary.Secondary digs and creeps into suggestion employing vibropiling equipment, first-selected hydraulic vibration pile driver.Because hydraulic pile driver have amplitude little, be conducive to hole wall and stablize and the advantage of environmental protection.
Key operation flow process comprises the following steps:
1, build both sides guiding wall 6 (also can not do guiding wall 6, but can be more difficult when burying square hole well head casing underground), bury the circular casing in aperture underground;
2, with legacy equipment and common process, mud off is adopted to complete circular bore;
3, extract the circular casing in aperture, bury square casing underground.Have during guiding wall 6 and adopt A type casing, adopt Type B casing without during guiding wall 6.Casing 5 has the effect of aperture protection and guiding;
4, hydraulic pile driver is connected fastening with the drilling rod 2 expanding drill with ferrule tool;
5, drilling tool moved to treat reaming place, and straightening, centering;
6, start hydraulic pile driver and dig lower brill, replace mud and timely deslagging simultaneously;
7, after at the bottom of expansion side to hole, slowly drilling tool is promoted, and clear hole, the square boring of final formation;
8, after digging squarely boring, descending reinforcing cage, concreting, just build up the fender post of required square, rectangle or trapezoid cross section.
Claims (3)
1. a circular bore expands drill with ferrule tool, comprise the drill bit (1) of hollow, be positioned at the drilling rod (2) in the middle of drill bit (1) and be arranged on the guide cylinder (3) of drilling rod (2) lower end, described drill bit (1) comprises lifting boot segment (11), standard expands pile cutoff (12) and teeth (13), the upper end that described standard expands pile cutoff (12) is connected with lifting boot segment (11), the standard that is arranged on described teeth (13) expands on the end opening outer wall of pile cutoff (12), described drilling rod (2) is connected with drill bit (1) inwall by web (4), described guide cylinder (3) is positioned at the below that standard expands pile cutoff (12), it is characterized in that: described standard expands the cross section of pile cutoff (12) for square, rectangle or trapezoidal.
2. circular bore according to claim 1 expands drill with ferrule tool, it is characterized in that: the external diameter suitable for reading of described lifting boot segment (11) is less than the external diameter that standard expands pile cutoff (12).
3. circular bore according to claim 1 expands drill with ferrule tool, it is characterized in that: the external diameter of described guide cylinder (3) is greater than the external diameter that standard expands pile cutoff (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520330587.2U CN204646109U (en) | 2015-05-20 | 2015-05-20 | Circular bore expands drill with ferrule tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520330587.2U CN204646109U (en) | 2015-05-20 | 2015-05-20 | Circular bore expands drill with ferrule tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646109U true CN204646109U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520330587.2U Active CN204646109U (en) | 2015-05-20 | 2015-05-20 | Circular bore expands drill with ferrule tool |
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| CN (1) | CN204646109U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426663A (en) * | 2018-04-18 | 2018-08-21 | 山东科技大学 | A kind of rectangle drilling hole stress monitoring device and monitoring method |
| CN108678661A (en) * | 2018-03-22 | 2018-10-19 | 中交路桥北方工程有限公司 | Rectangular friction pile forming hole method and the rectangular drill bit of pore-forming |
-
2015
- 2015-05-20 CN CN201520330587.2U patent/CN204646109U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678661A (en) * | 2018-03-22 | 2018-10-19 | 中交路桥北方工程有限公司 | Rectangular friction pile forming hole method and the rectangular drill bit of pore-forming |
| CN108426663A (en) * | 2018-04-18 | 2018-08-21 | 山东科技大学 | A kind of rectangle drilling hole stress monitoring device and monitoring method |
| CN108426663B (en) * | 2018-04-18 | 2019-12-24 | 山东科技大学 | Rectangular drilling stress monitoring device and monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |