CN215804384U - Drill bit applied to micro pile construction - Google Patents
Drill bit applied to micro pile construction Download PDFInfo
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- CN215804384U CN215804384U CN202122057049.9U CN202122057049U CN215804384U CN 215804384 U CN215804384 U CN 215804384U CN 202122057049 U CN202122057049 U CN 202122057049U CN 215804384 U CN215804384 U CN 215804384U
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Abstract
The utility model relates to a drill bit applied to micro pile construction, which comprises a drill rod, wherein the bottom of the drill rod is fixedly provided with a connection converter, a plurality of drill sheets are embedded into the circumference of the bottom of the connection converter, the lower end of one side surface of each drill sheet is provided with a plurality of soil cutting convex blocks, the outer wall of the drill rod is provided with a helical blade, the top of the drill rod is provided with a connecting nut connected with a rotating shaft of a mixing pile machine, a cavity is arranged inside the drill rod, and the lower end of the outer wall of the drill rod is provided with a grouting hole communicated with the cavity. The deep cement mixing pile driver is fully combined with the existing deep cement mixing pile driver, only the drill bit needs to be replaced, the deep cement mixing pile driver is simple and convenient, and the maximization of mechanical benefit can be realized; the advantages of long spiral dry operation and slurry replacement are combined, and guarantee is provided for construction quality and progress; aiming at geology with complex geological condition and more construction waste, the drill bit has obvious superiority.
Description
Technical Field
The utility model relates to the technical field of a mixing pile foundation drill bit for micro pile supporting engineering, in particular to a drill bit applied to micro pile construction.
Background
The micro pile is a pile type which appears in recent years, the diameter of the micro pile is generally less than 400mm, no mature pile forming process exists in the market, the process is similar to a combination of a pile and a cast-in-place pile, and the construction process is relatively complex. The micro-pile is often combined with a cement mixing pile to resist the soil side pressure together, so that the water retaining and soil retaining effects are achieved.
At present, most miniature piles are drilled by a small rotary drilling rig, and due to the fact that the pile machine is small in self weight and poor in stability, the drilling is difficult to continue when a common barrier is encountered, the problems need to be solved by means of excavation, displacement and the like, construction progress is influenced, engineering cost is increased, and the construction is not suitable for construction under the complex geological condition with many underground barriers; for the pile with the length of more than 10 meters, the verticality is difficult to ensure; the construction equipment of the miniature pile machine is less, and the selection, approach, maintenance and the like of the equipment are limited to a certain extent.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a drill bit applied to the construction of a micro pile.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a be applied to drill bit of miniature pile construction, includes the drilling rod, the drilling rod bottom has set firmly the connection converter, connection converter bottom circumference embedding has a plurality of to bore the piece, and a side lower extreme of every brill piece is equipped with a plurality of and cuts the native lug, be equipped with helical blade on the drilling rod outer wall, the drilling rod top is equipped with the coupling nut who links to each other with the pivot of stirring stake machine, the inside cavity that is equipped with of drilling rod, drilling rod outer wall lower extreme is equipped with the injected hole with the cavity intercommunication.
An inner spiral channel is arranged above the grouting hole in the cavity, an isolation plate is arranged above the inner spiral channel in the cavity, the upper end of the cavity is divided into a first channel and a second channel through the isolation plate, and a first inlet communicated with the first channel and a second inlet communicated with the second channel are arranged on the outer wall of the drill rod.
The drill bit is three in number, and the three drill bits mutually form an included angle of 120 degrees.
The drill bit is of a side-arranged right-angled trapezoid structure, the lower bottom of the drill bit is located in the middle of the bottom of the connecting converter, the height of the vertical lower bottom of the drill bit is 14cm, the height of the vertical upper bottom of the drill bit is 9cm, the lateral length of the drill bit is 20cm, and the thickness of the drill bit is 1.5 cm.
The soil cutting convex blocks are six in number, and the middle position of each soil cutting convex block protrudes out of the surface of each slice to form a herringbone structure.
The diameter of the connection converter is 20cm, the height of the connection converter is 9cm, and the height of the drill chip embedded in the connection converter is 5 cm.
The distance between the lowest end of the grouting hole and the top of the connecting converter is 2cm, and the diameter of the grouting hole is 4 cm.
The diameter of the spiral blade is 40cm, the blade interval is 40cm, and the thickness is 1 cm.
The connecting nut is connected with the drill rod in a screw connection and welding mode.
The total height of the connecting nut, the drill rod and the connecting converter is 1.08 m.
The utility model has the beneficial effects that: the deep cement mixing pile driver is fully combined with the existing deep cement mixing pile driver, only the drill bit needs to be replaced, the deep cement mixing pile driver is simple and convenient, and the maximization of mechanical benefit can be realized; the advantages of long spiral dry operation and slurry replacement are combined, and guarantee is provided for construction quality and progress; aiming at geology with complex geological condition and more construction waste, the drill bit has obvious superiority.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
in the figure: 1-a drill rod; 2-connecting a converter; 3-drilling a piece; 4-cutting soil bumps; 5-helical blades; 6-connecting a nut; 7-a cavity; 8-grouting holes; 9-internal spiral channel; 10-a separator plate; 11-a first channel; 12-a second channel; 13-a first inlet; 14-a second inlet;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1-2, a be applied to drill bit of miniature pile construction, including drilling rod 1, 1 bottom of drilling rod has set firmly connection converter 2, the embedding of 2 bottom circumference of connection converter has a plurality of drill bit 3, and a side lower extreme of every drill bit 3 is equipped with a plurality of and cuts native lug 4, be equipped with helical blade 5 on 1 outer wall of drilling rod, 1 top of drilling rod is equipped with coupling nut 6 that links to each other with the pivot of stirring stake machine, 1 inside cavity 7 that is equipped with of drilling rod, 1 outer wall lower extreme of drilling rod is equipped with the injected hole 8 that communicates with cavity 7.
The micro pile drill is divided into three areas, namely a drill area, a blade area and a connection area, the connection converter 2, the drill sheet 3 and the soil cutting bump 4 belong to the drill area, the drill rod 1 and the helical blade 5 partially belong to the blade area, and the connection nut 6 belongs to the connection area. The drill bit area is made of low-alloy high-strength structural steel Q420, and the blade area and the connecting area are made of Q345.
An inner spiral channel 9 is arranged above a grouting hole 8 in the cavity 7, a partition plate 10 is arranged above the inner spiral channel 9 in the cavity 7, the upper end of the cavity 7 is divided into a first channel 11 and a second channel 12 through the partition plate 10, and a first inlet 13 communicated with the first channel 11 and a second inlet 14 communicated with the second channel 12 are arranged on the outer wall of the drill rod 1.
The inside binary channels that is equipped with of drilling rod 1, grout and chemical coagulant can get into in the passageway of difference to including helical passage 9 department contact and intensive mixing, solidify after the slip casting hole 8 outflow after the mixture, avoid solidifying in inside.
The drill bit 3 is three in total, and the three drill bits 3 are arranged at an included angle of 120 degrees.
The drill plate 3 is of a laterally arranged right-angled trapezoid structure, the lower bottom of the drill plate 3 is located in the middle of the bottom of the converter 2, the vertical lower bottom of the drill plate 3 is 14cm in height, the vertical upper bottom of the drill plate is 9cm in height, the lateral length of the drill plate is 20cm, and the thickness of the drill plate is 1.5 cm.
The soil cutting convex blocks 4 are six in number, the middle position of each soil cutting convex block 4 protrudes out of the surface of the slice 3 to form a herringbone structure, and the herringbone structure is a stiffening facility on the drilling slice 3 and is beneficial to crushing and cutting soil under the condition of hard geology.
The diameter of the connection converter 2 is 20cm, the height is 9cm, and the height of the drill bit 3 embedded in the connection converter 2 is 5 cm.
The distance between the lowest end of the grouting hole 8 and the top of the connecting converter 2 is 2cm, and the diameter of the grouting hole 8 is 4 cm.
The diameter of the spiral blade 5 is 40cm, the blade interval is 40cm, the thickness is 1cm, and the functions of pore-forming, shaping and soil body replacement are achieved.
The connecting nut 6 is connected with the drill rod 1 in a bolt connection and welding mode.
The total height of the connecting nut 6, the drill rod 1 and the connecting converter 2 is 1.08 m.
Description of the principle: the drill bit area is made of alloy materials, and drilling can be performed under most geological conditions. Set up grouting hole 8 apart from drill bit district 2cm department, can effectually prevent the stifled hole risk. The soil cutting lug 4 on the drill plate 3 cuts soil, and the helical blade 5 moves upwards, so that initial power can be effectively provided for soil replacement, and effective guarantee is provided for mud replacement.
Action relationship: the connecting nut 6 is connected with the mixing pile machine, and the design requirement of hole cleaning can be met by utilizing the mud replacement principle.
The deep cement mixing pile driver is fully combined with the existing deep cement mixing pile driver, only the drill bit needs to be replaced, the deep cement mixing pile driver is simple and convenient, and the maximization of mechanical benefit can be realized; the advantages of long spiral dry operation and slurry replacement are combined, and guarantee is provided for construction quality and progress; aiming at geology with complex geological condition and more construction waste, the drill bit has obvious superiority.
The utility model has been described in connection with the accompanying drawings, it is to be understood that the utility model is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the utility model, and all such modifications and variations are within the scope of the utility model.
Claims (10)
1. The utility model provides a be applied to drill bit of miniature pile construction, a serial communication port, includes drilling rod (1), drilling rod (1) bottom has set firmly connection converter (2), connection converter (2) bottom circumference embedding has a plurality of to bore piece (3), and a side lower extreme of every drill piece (3) is equipped with a plurality of and cuts native lug (4), be equipped with helical blade (5) on drilling rod (1) outer wall, drilling rod (1) top is equipped with coupling nut (6) that link to each other with the pivot of stirring stake machine, drilling rod (1) inside is equipped with cavity (7), drilling rod (1) outer wall lower extreme is equipped with grouting hole (8) with cavity (7) intercommunication.
2. The drill bit applied to micro-pile construction is characterized in that an inner spiral channel (9) is arranged above a grouting hole (8) in the cavity (7), a partition plate (10) is arranged above the inner spiral channel (9) in the cavity (7) and divides the upper end of the cavity (7) into a first channel (11) and a second channel (12) through the partition plate (10), and a first inlet (13) communicated with the first channel (11) and a second inlet (14) communicated with the second channel (12) are formed in the outer wall of the drill rod (1).
3. A drill bit for micro-pile construction according to claim 2, characterized in that the number of the drill bits (3) is three, and the three drill bits (3) are arranged at an angle of 120 ° with respect to each other.
4. The drill bit applied to the micro-pile construction is characterized in that the drill bit (3) is of a side-arranged right-angle trapezoidal structure, the lower bottom of the drill bit (3) is located at the middle position of the bottom of the connecting converter (2), the height of the vertical lower bottom of the drill bit (3) is 14cm, the height of the vertical upper bottom of the drill bit is 9cm, the lateral length of the drill bit is 20cm, and the thickness of the drill bit is 1.5 cm.
5. The drill bit applied to the micro-pile construction is characterized in that the number of the soil cutting lugs (4) is six, and the middle position of each soil cutting lug (4) protrudes out of the surface of the cutting sheet (3) to form a herringbone structure.
6. A drill bit for micro-pile construction according to claim 5, characterized in that the diameter of the connection converter (2) is 20cm and the height is 9cm, and the height of the drill bit (3) embedded in the connection converter (2) is 5 cm.
7. A drill bit for micro-pile construction according to claim 6, characterized in that the distance between the lowest end of the grouting hole (8) and the top of the connection converter (2) is 2cm, and the diameter of the grouting hole (8) is 4 cm.
8. Drill bit for micro-piling according to claim 7, wherein the helical blades (5) have a diameter of 40cm, a pitch of 40cm and a thickness of 1 cm.
9. The drill bit applied to the micro-pile construction is characterized in that the connecting nut (6) is connected with the drill rod (1) in a screwing and welding mode.
10. Drill bit for micro pile construction according to claim 9, characterized in that the total height of the coupling nut (6), the drill rod (1) and the coupling converter (2) is 1.08 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122057049.9U CN215804384U (en) | 2021-08-30 | 2021-08-30 | Drill bit applied to micro pile construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122057049.9U CN215804384U (en) | 2021-08-30 | 2021-08-30 | Drill bit applied to micro pile construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215804384U true CN215804384U (en) | 2022-02-11 |
Family
ID=80153067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122057049.9U Active CN215804384U (en) | 2021-08-30 | 2021-08-30 | Drill bit applied to micro pile construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215804384U (en) |
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2021
- 2021-08-30 CN CN202122057049.9U patent/CN215804384U/en active Active
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