CN108561085B - Spiral soil extrusion drill bit - Google Patents
Spiral soil extrusion drill bit Download PDFInfo
- Publication number
- CN108561085B CN108561085B CN201810605911.5A CN201810605911A CN108561085B CN 108561085 B CN108561085 B CN 108561085B CN 201810605911 A CN201810605911 A CN 201810605911A CN 108561085 B CN108561085 B CN 108561085B
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- China
- Prior art keywords
- soil
- squeezing
- rod
- expanding
- drill
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- 239000002689 soil Substances 0.000 title claims abstract description 149
- 238000001125 extrusion Methods 0.000 title claims abstract description 104
- 238000005553 drilling Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 description 17
- 238000005056 compaction Methods 0.000 description 7
- 239000011295 pitch Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000002226 simultaneous effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of spiral soil extrusion pile equipment for civil engineering, in particular to a spiral soil extrusion drill bit, which comprises a drill tip, a soil extrusion rod and spiral blades, wherein the drill tip is arranged at the lower end of the soil extrusion rod, and the upper end of the soil extrusion rod is connected with the drill rod.
Description
Technical Field
The invention relates to the technical field of spiral soil extrusion pile equipment for civil engineering, in particular to a spiral soil extrusion drill bit which has the advantages of simple structure, convenience in use, good soil extrusion effect, high soil extrusion efficiency and capacity of increasing the bearing capacity and frictional resistance of piles.
Background
As is well known, in building construction, a long spiral drilling pile is usually formed by using a lower end connecting bolt of a common long spiral drill rod to squeeze an earth drill bit, then installing the upper end of the drill rod on the long spiral drill bit to drill holes, wherein the existing earth drill bit is generally composed of a drill point, an earth squeezing rod and spiral blades, and the earth within the diameter range of the drill rod is lifted out of the holes along with the blades in the drilling process, so that compaction piles are required to be added when collapsible loess or the soil needing compaction is treated, the earth squeezing rod between the spiral blades is provided with an earth squeezing expansion body with gradually increased diameter from bottom to top, the compaction effect is increased, the diameter of the earth squeezing expansion body is gradually increased from bottom to top, the upward movement of the earth is hindered, the upward movement speed of the earth is reduced, the downward movement speed of the whole drill body is influenced, the earth squeezing effect is influenced, and especially the existing earth squeezing drill is generally difficult to drill into rock strata, and the weathering effect is poor.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide the spiral soil extrusion drill bit which has the advantages of simple structure, convenient use, good soil extrusion effect, high soil extrusion efficiency and capacity of increasing the bearing capacity and the friction resistance of the pile.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a spiral crowded native drill bit, this drill bit includes drill point, crowded native pole and helical blade, the lower extreme of crowded native pole be equipped with the drill point, the upper end of crowded native pole is connected with the drilling rod, its characterized in that is equipped with at least one crowded native unit that expands on the crowded native pole, crowded native unit that expands is the taper form that reduces gradually from bottom to top, the taper angle of taper form crowded native unit that expands is 30~85 degrees, crowded native pole and crowded native unit that expands from bottom to top twine in succession have crowded and expand helical blade, crowded expansion helical blade is connected with helical blade on the drilling rod smoothly, crowded expansion helical blade is the taper form that the diameter increases gradually from bottom to top, the pitch of crowded expansion helical blade that twines on crowded native pole and crowded native unit from bottom to top increases the crowded dense effect, realize down, reaming through the simultaneous effect of crowded expansion helical blade that expands of upper cone.
The soil squeezing and expanding units on the soil squeezing rod are sequentially arranged and connected in a continuous mode, and the squeezing and expanding spiral blades are wound on the soil squeezing and expanding units from bottom to top and are connected with the spiral blades on the drill rod in a smooth mode.
The soil squeezing and expanding units on the soil squeezing rod are connected at intervals, and the spiral blades are wound on the soil squeezing and expanding units and the soil squeezing rod from bottom to top and are continuously connected with the spiral blades on the drill rod.
The upper end face and the lower end face of the soil squeezing and expanding unit are respectively overlapped with the squeezing and expanding spiral blades wound on the upper end face and the lower end face of the soil squeezing and expanding unit, so that soil is prevented from being stored in gaps between the soil squeezing and expanding unit and the squeezing and expanding spiral blades, and the soil up-moving effect is ensured.
The diameter of the upper end face of the soil squeezing and expanding unit at the uppermost end of the soil squeezing rod is matched and connected with the diameter of the lower end face of the drill rod, so that the soil squeezing continuity is ensured, and the soil pushing effect is ensured.
The edge of the extrusion-expansion helical blade is provided with drilling teeth facing the outer side of the blade, so that the soil cutting of the drill bit is assisted, and the downward moving speed is increased.
The bottom end of the extrusion expansion helical blade is provided with an auxiliary drill point which faces downwards vertically, the axis of the auxiliary drill point is parallel to the axis of the drill point, and the downward moving speed of the drill bit is increased through the auxiliary drill point.
The invention is characterized in that at least one soil squeezing and expanding unit is arranged on the soil squeezing rod, the soil squeezing and expanding unit is in a frustum shape with gradually reduced diameter from bottom to top, the taper angle of the frustum-shaped soil squeezing and expanding unit is 30-85 degrees, the soil squeezing and expanding spiral blades are continuously wound from bottom to top, the soil squeezing and expanding spiral blades are smoothly connected with the spiral blades on the drill rod, the soil squeezing and expanding spiral blades are in a frustum shape with gradually increased diameter from bottom to top, the taper angle of the frustum-shaped soil squeezing and expanding spiral blades is 7-19 degrees, the edge of the soil squeezing and expanding spiral blades is provided with drilling teeth facing the outer side of the blades, the rapid drilling and reaming are realized through the simultaneous action of the upper tapered soil squeezing and expanding unit and the tapered soil squeezing and expanding spiral blades, the pitch of the soil squeezing and expanding spiral blades wound on the soil squeezing and expanding unit is gradually increased from bottom to top, the soil squeezing and expanding units on the soil squeezing and expanding unit are sequentially arranged and continuously connected, the extruding and expanding screw blade is wound on the extruding and expanding unit from bottom to top and is in smooth connection with the screw blade on the drill rod, the extruding and expanding screw blade on the extruding and expanding screw blade is in interval connection, the extruding and expanding screw blade is wound on the extruding and expanding unit and the extruding and expanding screw rod from bottom to top and is continuously connected with the screw blade on the drill rod, the upper end face and the lower end face of the extruding and expanding screw blade are respectively overlapped with the extruding and expanding screw blade wound on the upper end face and the lower end face of the extruding and expanding screw blade, the gap between the extruding and expanding unit and the extruding and expanding screw blade is prevented from depositing soil, the soil up-moving effect is ensured, the diameter of the upper end face of the uppermost extruding and expanding unit of the extruding and expanding screw rod is matched and connected with the diameter of the lower end face of the drill rod, the continuity of extruding and expanding screw blade is ensured, the bottom end of the extruding and expanding screw blade is provided with a vertical downward auxiliary drill tip, the auxiliary drill point is parallel to the drill point, and the drill bit downward movement speed is increased through the auxiliary drill point, so that the spiral soil extrusion drill bit has the advantages of simple structure, convenience in use, good soil extrusion effect, high soil extrusion efficiency and capacity of increasing the bearing capacity and frictional resistance of the pile.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the continuous connection of soil-squeezing and body-expanding units on a drill rod.
FIG. 3 is a schematic diagram of the structure of the spacing connection of soil-squeezing and body-expanding units on a drill rod.
Fig. 4 is a cross-sectional view of the portion of the drill rod and bit of fig. 2 that connects.
FIG. 5 is a partial schematic view of a helical blade in accordance with the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
As shown in the drawing, the spiral soil extrusion drill bit comprises a drill tip 1, a soil extrusion rod 2 and a helical blade, wherein the drill tip 1 is arranged at the lower end of the soil extrusion rod 2, the upper end of the soil extrusion rod 2 is connected with a drill rod 6, the spiral soil extrusion drill bit is characterized in that at least one soil extrusion expansion unit 4 is arranged on the soil extrusion rod 2, the soil extrusion expansion unit 4 is in a conical table shape with gradually reduced diameter from bottom to top, the taper angle B of the conical table-shaped soil extrusion expansion unit 4 is 30-85 degrees, the soil extrusion rod 2 and the soil extrusion expansion unit 4 are continuously wound with extrusion expansion helical blades 3 from bottom to top, the extrusion expansion helical blades 3 are smoothly connected with the helical blades on the drill rod 6, the extrusion expansion helical blades 3 are in a conical table shape with gradually increased diameter from bottom to top, the taper angle A of the conical table-shaped extrusion expansion helical blades 3 is 7-19 degrees, the edges of the extrusion expansion helical blades 3 are provided with drilling teeth facing the outer sides of the blades, the rapid drilling and reaming are realized through the simultaneous action of the upper conical soil extrusion and expansion unit 4 and the conical soil extrusion and expansion helical blade 3, the screw pitches of the soil extrusion and expansion helical blade 3 wound on the soil extrusion and expansion unit 2 and the soil extrusion and expansion unit 4 are gradually increased from bottom to top, the screw pitches are L1, L2 and L3 in figure 1, L1 is smaller than L3, the compaction effect is increased, the soil extrusion and expansion unit 4 on the soil extrusion and expansion unit 2 is sequentially arranged to be continuously connected, the soil extrusion and expansion helical blade 3 is wound on the soil extrusion and expansion unit 4 from bottom to top and is smoothly connected with the helical blade on the drill rod 6, the soil extrusion and expansion unit 4 on the soil extrusion and expansion unit 2 is in interval connection, the soil extrusion and expansion helical blade 3 is wound on the soil extrusion and expansion unit 4 and the soil extrusion and expansion unit 2 from bottom to top and is continuously connected with the helical blade on the drill rod 6, the invention relates to a soil extrusion and expansion unit, which is characterized in that the upper end face and the lower end face of the soil extrusion and expansion unit 4 are respectively overlapped with an extrusion and expansion helical blade 3 wound on the upper end face and the lower end face of the soil extrusion and expansion unit 4, the soil is prevented from being stored in a gap between the soil extrusion and expansion helical blade 4 and the drill rod 6, the soil up-moving effect is ensured, the diameter of the upper end face of the soil extrusion and expansion unit 4 at the uppermost end of a soil extrusion rod 2 is matched and connected with the diameter of the lower end face of the drill rod 6, the soil extrusion continuity is ensured, the soil extrusion effect is ensured, the bottom end of the soil extrusion and expansion helical blade 3 is provided with a vertical downward auxiliary drill tip 11, the auxiliary drill tip 11 is parallel to the drill tip 1, the drill bit down-moving speed is increased through the auxiliary drill tip 11.
When the invention is used, firstly, the drill rod is connected with the drill bit, the driving mechanism drives the rotary head to rotate and move downwards, in the process of rotating and moving downwards, as the extruding and expanding helical blade 3 in the drill bit is in a lower cone shape, the drill is beneficial to descending, the descending speed is improved, meanwhile, as the extruding and expanding unit 4 in an upper cone shape is arranged on the extruding and expanding rod 2, the extruding and expanding unit 4 forms a cutting edge, the cutting is beneficial to, the earth extrusion can be carried out, the earth extrusion is beneficial to the ascending, the reaction force pushes the extruding and expanding helical blade 3 to move downwards, the earth compaction effect is achieved, the construction efficiency is improved, and especially the extruding and expanding unit in an upper cone shape can compact the soil around the drill bit, the invention realizes the back force extrusion to the filled concrete pile after compaction, thereby increasing the bearing capacity of the concrete pile and the stability of the pile, the soil extrusion rod and the drill rod are hollow and convenient for conveying the concrete, the invention has the advantages that the soil extrusion rod 2 is provided with at least one soil extrusion expanding unit 4, the soil extrusion expanding unit 4 is in a frustum shape with gradually reduced diameter from bottom to top, the taper angle B of the soil extrusion expanding unit 4 is 30-85 degrees, the soil extrusion rod 2 and the soil extrusion expanding unit 4 are continuously wound with the extrusion expanding helical blade 3 from bottom to top, the extrusion expanding helical blade 3 is smoothly connected with the helical blade on the drill rod 6, the extrusion expanding helical blade 3 is in a frustum shape with gradually increased diameter from bottom to top, the taper angle A of the frustum-shaped extrusion expansion helical blade 3 is 7-19 degrees, the edge of the extrusion expansion helical blade 3 is provided with drilling teeth facing the outer side of the blade, the rapid down drilling and reaming are realized through the simultaneous action of the upper conical extrusion expansion helical blade 3 and the conical extrusion expansion helical blade 4, the pitch of the extrusion expansion helical blade 3 wound on the extrusion soil rod 2 and the extrusion soil expansion helical blade 4 is gradually increased from bottom to top, the pitch is as L1, L2 and L3 in figure 1, L1 is smaller than L3, the extrusion compaction effect is increased, the extrusion soil expansion helical blade 4 on the extrusion soil rod 2 is sequentially arranged to be continuously connected, the extrusion expansion helical blade 3 is wound on the extrusion soil expansion helical blade 4 from bottom to top and is smoothly connected with the helical blade on the drill rod 6, the soil squeezing and expanding units 4 on the soil squeezing and expanding rod 2 are connected at intervals, the spiral blades 3 are wound on the soil squeezing and expanding units 4 and the soil squeezing and expanding rod 2 from bottom to top and are continuously connected with the spiral blades on the drill rod 6, the upper end face and the lower end face of the soil squeezing and expanding unit 4 are respectively overlapped with the spiral blades 3 wound on the upper end face and the lower end face of the soil squeezing and expanding unit 4, the soil is prevented from being stored in a gap between the soil squeezing and expanding unit 4 and the spiral blades 3, the soil up-moving effect is ensured, the diameter of the upper end face of the soil squeezing and expanding unit 4 at the uppermost end of the soil squeezing and expanding rod 2 is matched and connected with the diameter of the lower end face of the drill rod 6, the continuity of soil squeezing is ensured, the soil pushing effect is ensured, the bottom end of the extrusion expansion helical blade 3 is provided with an auxiliary drill point 11 which is vertically downward, the auxiliary drill point 11 is parallel to the drill point 1, the drill bit downward moving speed is increased through the auxiliary drill point 11, the upper end of the soil extrusion rod 2 is connected with a drill rod 6 through a connecting component, the connecting component consists of a connecting guard plate 7 and a connecting bolt 8, one end of the connecting guard plate 7 is connected with the lower end of the drill rod 6, the other end of the connecting guard plate 7 is wrapped on the outer surface of the uppermost soil extrusion expansion unit 4 of the soil extrusion rod 2 and is connected through the connecting bolt 8, the lower end surface of the drill rod 6 is provided with a connecting boss 9, the upper end surface of the soil extrusion rod 2 is provided with a connecting groove 10 matched with the connecting boss 9, realize the location connection of drill bit and drilling rod 6 through the cooperation connection of connection boss 9 and connection recess 10, have simple structure, convenient to use, crowded soil effectual, crowded soil is efficient, increase the bearing capacity and the spiral crowded soil drill bit of frictional resistance of stake advantage.
Claims (1)
1. The spiral soil squeezing drill bit comprises a drill tip, a soil squeezing rod and a spiral blade, wherein the drill tip is arranged at the lower end of the soil squeezing rod, the upper end of the soil squeezing rod is connected with the drill rod, the spiral soil squeezing drill bit is characterized in that at least one soil squeezing and expanding unit is arranged on the soil squeezing rod, the soil squeezing and expanding unit is in a frustum shape with gradually reduced diameter from bottom to top, the taper angle of the frustum-shaped soil squeezing and expanding unit is 30-85 degrees, the soil squeezing rod and the soil squeezing and expanding unit are continuously wound with the squeezing and expanding spiral blade from bottom to top, the squeezing and expanding spiral blade is in smooth connection with the spiral blade on the drill rod, the squeezing and expanding spiral blade is in a frustum shape with gradually increased diameter from bottom to top, the taper angle of the frustum-shaped squeezing and expanding spiral blade is 7-19 degrees, the pitch of the squeezing and expanding spiral blade wound on the soil squeezing and expanding unit is gradually increased from bottom to top, the device comprises an upper conical soil extrusion expansion unit and a conical soil extrusion expansion spiral blade, wherein the upper conical soil extrusion expansion unit and the conical soil extrusion expansion spiral blade are simultaneously used for realizing rapid down drilling and reaming, the soil extrusion expansion units on the soil extrusion rod are connected at intervals, the soil extrusion expansion spiral blade is wound on the soil extrusion expansion unit and the soil extrusion rod from bottom to top and is continuously connected with the spiral blade on the drill rod, the edge of the soil extrusion expansion spiral blade is provided with drilling teeth towards the outer side of the blade, the upper end face and the lower end face of the soil extrusion expansion unit are respectively overlapped with the soil extrusion expansion spiral blade wound on the upper end face and the lower end face of the soil extrusion expansion unit, the diameter of the upper end face of the uppermost soil extrusion expansion unit of the soil extrusion rod is matched with the diameter of the lower end face of the drill rod, and the bottom end of the soil extrusion expansion spiral blade is provided with a vertical downward auxiliary drill tip, and the drill bit downward moving speed is increased through the auxiliary drill tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605911.5A CN108561085B (en) | 2018-06-13 | 2018-06-13 | Spiral soil extrusion drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605911.5A CN108561085B (en) | 2018-06-13 | 2018-06-13 | Spiral soil extrusion drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108561085A CN108561085A (en) | 2018-09-21 |
| CN108561085B true CN108561085B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810605911.5A Active CN108561085B (en) | 2018-06-13 | 2018-06-13 | Spiral soil extrusion drill bit |
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| Country | Link |
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| CN (1) | CN108561085B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219597B (en) * | 2019-06-25 | 2024-06-21 | 吉林省大星基础工程科技有限公司 | Drilling tool device for spiral soil squeezing and pile pressing and pile foundation pile construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812976A (en) * | 2010-05-14 | 2010-08-25 | 中冶建筑研究总院有限公司 | Adjustable multiple coil extruding and expanding drilling tool |
| CN102162247A (en) * | 2010-02-21 | 2011-08-24 | 韩顺和 | Construction method of branch cast-in-place pile |
| CN105332652A (en) * | 2015-11-17 | 2016-02-17 | 威海市水利岩土工程有限公司 | Long spiral base-expanding and pore-forming drilling machine system |
| CN208473715U (en) * | 2018-06-13 | 2019-02-05 | 威海市水利岩土工程有限公司 | A kind of spiral soil compaction drill bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10190280B2 (en) * | 2009-12-18 | 2019-01-29 | Foundation Constructors, Inc. | Drill tip for foundation pile |
-
2018
- 2018-06-13 CN CN201810605911.5A patent/CN108561085B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162247A (en) * | 2010-02-21 | 2011-08-24 | 韩顺和 | Construction method of branch cast-in-place pile |
| CN101812976A (en) * | 2010-05-14 | 2010-08-25 | 中冶建筑研究总院有限公司 | Adjustable multiple coil extruding and expanding drilling tool |
| CN105332652A (en) * | 2015-11-17 | 2016-02-17 | 威海市水利岩土工程有限公司 | Long spiral base-expanding and pore-forming drilling machine system |
| CN208473715U (en) * | 2018-06-13 | 2019-02-05 | 威海市水利岩土工程有限公司 | A kind of spiral soil compaction drill bit |
Also Published As
| Publication number | Publication date |
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| CN108561085A (en) | 2018-09-21 |
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