CN202325248U - Long spiral reinforcing drill bit - Google Patents
Long spiral reinforcing drill bit Download PDFInfo
- Publication number
- CN202325248U CN202325248U CN2011204813722U CN201120481372U CN202325248U CN 202325248 U CN202325248 U CN 202325248U CN 2011204813722 U CN2011204813722 U CN 2011204813722U CN 201120481372 U CN201120481372 U CN 201120481372U CN 202325248 U CN202325248 U CN 202325248U
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- China
- Prior art keywords
- drill bit
- center tube
- bucket tooth
- long spiral
- reinforced
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- Expired - Fee Related
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Abstract
The utility model discloses a long spiral reinforcing drill bit, which comprises a drill bit core and a spiral blade. A connecting portion connected with a drill stem is arranged at the upper end of the drill bit core, a drill bit tip is arranged at the lower end of the drill bit core, the drill bit core comprises an upper center tube, the spiral blade is disposed on the periphery of the upper center tube, an integral casting portion is fixedly disposed at the lower end of the upper center tube and comprises a lower center tube and a lower spiral blade, wherein the lower center tube is coaxially connected with the upper center tube, and the lower spiral blade is integrally formed on the lower center tube. The drill bit core is divided into an upper portion and a lower portion, the lower portion is in integral casting forming, namely, the lower spiral blade and the lower center tube are integrally formed, and accordingly the double spiral blades are connected more firmly, and are not easy to be damaged in a drilling process.
Description
Technical field
The utility model relates to a kind of long spiral drilling head.
Background technology
Long screw pile machine in the application in fields such as building, bridge construction engineering more and more widely, existing drill bit mostly adopts the central tube that will be welded with sea whelk to be threaded afterwards in the structure that welds together, like Chinese patent notification number CN101798905A with joint usefulness; The day for announcing is on August 11st, 2010, and name is called in ' a kind of long many spiral cutters of screw pile machine formula drill bit ' manual and discloses a kind of long many spiral cutters of screw pile machine formula drill bit, comprises drill body; The drill body top is provided with the lip locating ring that is used for axial location and the effect of sealing rig long screw rod hollow duct, and the drill body both sides are provided with and are used for and the fixing fixedly ear of usefulness of long screw rod, and the drill body bottom is provided with the drill bit core; The drill bit core is provided with the drill bit screw thread, and drill bit screw thread front end offers cutting edge, and drill bit core front end is provided with bit point of the drill; Bit point of the drill offers the yi word pattern edge of a knife, and helical blade is for being welded on the drill bit core, because the limitation of welding; Cause the drill bit bulk strength not high, and strengthen weld seam and be easy to generate bigger welding deformation, when creeping into as running into harder stratum; Like severely-weathered rock stratum or when containing pebble layer, need bigger moment of torsion, the helical blade strength deficiency of creeping into; Cause easily and twist curved helical blade; Thereby influence construction is carried out, and drill bit needs integral replacing, and replacement cost is higher.
The utility model content
The purpose of the utility model is to overcome the above-mentioned defective that prior art exists, and provides a kind of under abominable geological conditions, when running into the higher stratum of hardness, and the non-damageable high-intensity long spiral drilling head of drill bit.
For realizing above-mentioned purpose; The utility model adopts following technical scheme: the reinforced drill bit of a kind of long spiral; Comprise drill bit core, helical blade, drill bit core upper end is provided with the connecting portion that is connected with drilling rod, and drill bit core lower end is provided with bit point of the drill; Described drill bit core comprises upper center tube; Described helical blade is arranged on the periphery of upper center tube, and the lower end of upper center tube is installed with monoblock cast portion, monoblock cast portion comprise with coaxial lower center tube that is connected of upper center tube and lower center tube on the following helical blade of one-body molded setting.
Described helical blade down is the double helix blade.
The lower end of described double helix blade is provided with bucket tooth.
Described double helix blade lower end is provided with the bucket tooth welding groove, and described bucket tooth is welded in the bucket tooth welding groove, and is fixed to the lower end of double helix blade.
Described bucket tooth comprises bucket tooth toothholder and bucket tooth tooth cover, and bucket tooth is welded in the bucket tooth welding groove through the bucket tooth toothholder.
Described connecting portion is that the upper end of upper center tube is provided with flange, and flange upper end convexes with and is used for the intubate of pegging graft and cooperating with the auger stem endoporus.
Described lower center tube lower end is provided with otic placode, and described bit point of the drill comprises that the bottom door lower end is provided with drill bushing through the hinged bottom door with the lower center tube sealing that is used for that is arranged on the lower center tube lower end of described otic placode.
The one-body molded described lower center tube lower end that is arranged on of described otic placode.
The root and the back side thereof of described helical blade are provided with reinforcing rib.
The utility model drill bit core is divided into two parts up and down, and the bottom is divided into integral casting forming, promptly descends the one-body molded setting of helical blade and lower center tube, and it is more firm that helical blade is connected, and in drilling process, is not easy to damage.
Further, the bucket tooth of setting is further beaten mellow soil, reduces the stressed of drill bit, strengthens drilling life of bit.
Further, bucket tooth is fixed through the bucket tooth welding groove, makes bucket tooth fixing more firm, and weld seam is not easy to crack.
Further, bucket tooth is divided into bucket tooth toothholder and bucket tooth tooth cover, after the cover wearing and tearing of bucket tooth tooth or can change fast according to different soil properties.
Further, bottom door can adopt common high-abrasive material, and behind bit wear, independent replacing drill bushing gets final product simultaneously, has reduced the cost of production and the maintenance cost of drill bit.
Further, otic placode and lower center tube are wholely set, and make drill bit in drilling process, be difficult for torsional deformation.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the utility model;
Fig. 2 is the structural representation of the monoblock cast portion of Fig. 1.
The specific embodiment
The embodiment of the reinforced drill bit of a kind of long spiral; Like Fig. 1, shown in 2, comprise upper center tube 1, the periphery of upper center tube 1 is provided with helical blade 2; The upper end of upper center tube 1 is provided with flange 3, and flange 3 upper ends convex with and are used for the intubate 4 of pegging graft and to cooperate with the auger stem endoporus.The lower end of upper center tube 1 is installed with monoblock cast portion 5; Monoblock cast portion 5 comprises the lower center tube 51 with the coaxial setting of upper center tube, and with helical blade under the cast-in-block on the lower center tube 51 52 and otic placode 53, following helical blade 52 is the double helix blade; The root and the back side thereof of double helix blade 52 are provided with reinforcing rib; Double helix blade 52 lower ends are equipped with bucket tooth welding groove 54, are provided with bucket tooth 6 in the bucket tooth welding groove 54, and bucket tooth 6 comprises bucket tooth toothholder 61 and bucket tooth tooth cover 62; The otic placode 53 hinged bottom doors 7 that are used for lower center tube 51 sealings that are provided with, bottom door 7 lower ends are provided with drill bushing 8.
The foregoing description in use, driven by motor long screw drill rod and drill bit rotate together, drill bit moves down under moment of torsion; Bucket tooth and drill bit are beaten rock or the earth around the pine simultaneously, and helical blade and lower center tube under the integral type make blade can bear bigger moment of torsion; Following helical blade is not easy twist and warping, and bucket tooth is welded in the bucket tooth welding groove in addition, and weld seam is not easy to crack in drilling process; After the degree of depth that gets into regulation, utilize motor that long spiral drilling head is upwards mentioned a bit of distance, drill bushing under action of gravity to lower swing; Drive bottom door the hollow duct of long screw drill rod is opened, fillers such as concrete are injected, can fill pile.
In other embodiment, described helical blade lower end down can not be provided with bucket tooth, and blade is arranged in following helical blade lower end, creeps into through drill bushing.
In other embodiment, described bucket tooth can also directly be the bucket tooth cover.
In other embodiment, described helical blade lower end down can not be provided with the bucket tooth welding groove, and the lower end that bucket tooth is welded direct to helical blade gets final product.
At other is among the embodiment, and the double helix blade can not be provided with reinforcing rib, gets final product the root system of blade is wide.
Claims (9)
1. the reinforced drill bit of long spiral comprises drill bit core, helical blade, and drill bit core upper end is provided with the connecting portion that is connected with drilling rod; Drill bit core lower end is provided with bit point of the drill; It is characterized in that described drill bit core comprises upper center tube, described helical blade is arranged on the periphery of upper center tube; The lower end of upper center tube is installed with monoblock cast portion, monoblock cast portion comprise with coaxial lower center tube that is connected of upper center tube and lower center tube on the following helical blade of one-body molded setting.
2. the reinforced drill bit of long spiral according to claim 1 is characterized in that, described helical blade down is the double helix blade.
3. the reinforced drill bit of long spiral according to claim 2 is characterized in that the lower end of described double helix blade is provided with bucket tooth.
4. the reinforced drill bit of long spiral according to claim 3 is characterized in that, described double helix blade lower end is provided with the bucket tooth welding groove, and described bucket tooth is welded in the bucket tooth welding groove, and is fixed to the lower end of double helix blade.
5. the reinforced drill bit of long spiral according to claim 4 is characterized in that, described bucket tooth comprises bucket tooth toothholder and bucket tooth tooth cover, and bucket tooth is welded in the bucket tooth welding groove through the bucket tooth toothholder.
6. the reinforced drill bit of long spiral according to claim 1 is characterized in that, described connecting portion is that the upper end of upper center tube is provided with flange, and flange upper end convexes with and is used for the intubate of pegging graft and cooperating with the auger stem endoporus.
7. the reinforced drill bit of long spiral according to claim 6; It is characterized in that; Described lower center tube lower end is provided with otic placode, and described bit point of the drill comprises that the bottom door lower end is provided with drill bushing through the hinged bottom door with the lower center tube sealing that is used for that is arranged on the lower center tube lower end of described otic placode.
8. the reinforced drill bit of long spiral according to claim 7 is characterized in that, the one-body molded described lower center tube lower end that is arranged on of described otic placode.
9. the reinforced drill bit of long spiral according to claim 1 is characterized in that the root and the back side thereof of described helical blade are provided with reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204813722U CN202325248U (en) | 2011-11-28 | 2011-11-28 | Long spiral reinforcing drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204813722U CN202325248U (en) | 2011-11-28 | 2011-11-28 | Long spiral reinforcing drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325248U true CN202325248U (en) | 2012-07-11 |
Family
ID=46437230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204813722U Expired - Fee Related CN202325248U (en) | 2011-11-28 | 2011-11-28 | Long spiral reinforcing drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325248U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832094A (en) * | 2015-05-08 | 2015-08-12 | 黑龙江中古建筑节能科技股份有限公司 | Long auger drilling and base-expanding complete device and reaming method |
| CN105089507A (en) * | 2015-09-01 | 2015-11-25 | 华南农业大学 | Efficient soil breaking drill bit |
| CN106284328A (en) * | 2016-10-28 | 2017-01-04 | 傅志斌 | Energy-conservation strength self-reaction force multidirectional cement mixing method drilling tool |
| CN106545011A (en) * | 2016-10-28 | 2017-03-29 | 傅志斌 | The multidirectional mixing pile pile making method of efficient energy-saving |
| CN108104723A (en) * | 2018-02-11 | 2018-06-01 | 上海广大基础工程有限公司 | A kind of drilling tool |
-
2011
- 2011-11-28 CN CN2011204813722U patent/CN202325248U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832094A (en) * | 2015-05-08 | 2015-08-12 | 黑龙江中古建筑节能科技股份有限公司 | Long auger drilling and base-expanding complete device and reaming method |
| CN104832094B (en) * | 2015-05-08 | 2017-12-01 | 黑龙江中古建筑节能科技股份有限公司 | Long auger base expanding and base expanding complexes and expanding method |
| CN105089507A (en) * | 2015-09-01 | 2015-11-25 | 华南农业大学 | Efficient soil breaking drill bit |
| CN105089507B (en) * | 2015-09-01 | 2017-12-26 | 华南农业大学 | A kind of drill bit that efficiently breaks ground |
| CN106284328A (en) * | 2016-10-28 | 2017-01-04 | 傅志斌 | Energy-conservation strength self-reaction force multidirectional cement mixing method drilling tool |
| CN106545011A (en) * | 2016-10-28 | 2017-03-29 | 傅志斌 | The multidirectional mixing pile pile making method of efficient energy-saving |
| CN108104723A (en) * | 2018-02-11 | 2018-06-01 | 上海广大基础工程有限公司 | A kind of drilling tool |
| CN108104723B (en) * | 2018-02-11 | 2023-11-03 | 上海广大基础工程有限公司 | Drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131128 |