CN104018781A - Symmetric double-eccentric block reamer bit - Google Patents
Symmetric double-eccentric block reamer bit Download PDFInfo
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- CN104018781A CN104018781A CN201410263019.5A CN201410263019A CN104018781A CN 104018781 A CN104018781 A CN 104018781A CN 201410263019 A CN201410263019 A CN 201410263019A CN 104018781 A CN104018781 A CN 104018781A
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- eccentric block
- instrument transformer
- virtual calibrator
- connecting shaft
- symmetrical expression
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Abstract
The invention relates to parts of engineering construction tapping equipment, in particular to a symmetric double-eccentric block reamer bit matched with a drilling rig and an impactor for use. The symmetric double-eccentric block reamer bit is provided with a rod stabilizing device. A left connecting shaft and a right connecting shaft are axially inserted in the front end face of the rod stabilizing device, wherein the left connecting shaft and the right connecting shaft are symmetrically arranged, a radial cylindrical pin corresponding to the two connecting shafts is inserted in the rod stabilizing device, and a pin slot corresponding to the cylindrical pin is formed in each connecting shaft and provided with two through positioning surfaces so that the corresponding connecting shaft can rotate by 60+/-5 degrees. One section of each connecting shaft stretches outwards, a left eccentric block and a right eccentric block are installed on the two connecting shafts respectively, wherein the left eccentric block and the right eccentric block are symmetrically arranged, the opposite faces of the left eccentric block and the right eccentric block are connected in a sliding mode, and a plurality of alloy tool bits are embedded in each eccentric block. The symmetric double-eccentric block solves the problems that an existing single-eccentric block reamer bit is uneven in radial stress, prone to jamming and small in reaming diameter, and is mainly used for underground punching and cement grouting for foundation pile fabrication.
Description
Technical field
The present invention relates to engineering construction tapping equipment component, the two eccentric block reaming bits of symmetrical expression that especially a kind of supporting rig, impactor use.
Background technology
Eccentric reaming drill bit is that supporting rig, impactor and sleeve pipe are done the target drill of foundation pile for underground punching cement grouting.Existing eccentric reaming bores structure referring to Fig. 1, 2, it has virtual calibrator for instrument transformer 1, cutter head 3 is equipped with in front end docking at virtual calibrator for instrument transformer, at the middle part of cutter head, be set with an eccentric block, on it, be embedded with some alloy cutter heads, this is a kind of typical single eccentric block structure, this structure is when work, cutter head 3 with virtual calibrator for instrument transformer 1 relative to not rotating, one-piece machine member is when turning clockwise, the eccentric orfice of middle eccentric block 2 relatively rotates and produces eccentric (opening) around cutter head eccentric shaft, increased counter bore diameter, when being rotated counterclockwise, middle eccentric block 2 draws in the same with virtual calibrator for instrument transformer diameter, at this moment can extract drill bit, but in using, there are the following problems:
1. when rotating eccentricity is opened, only have monolaterally in reaming, radial force is inhomogeneous, and easily blocks, and makes drill bit occur scrapping; 2. in order to guarantee to bear certain radial load, the offset of design can not be excessive, and it is not very large having limited counter bore diameter, makes can not well along hole, fall with pipe.
Summary of the invention
Object of the present invention is exactly the reamer discontinuity that will solve existing single eccentric block structure, easy bit freezing, and the problem that counter bore diameter is less, provides a kind of symmetrical expression two eccentric block reaming bits.
Concrete scheme of the present invention is: the two eccentric block reaming bits of a kind of symmetrical expression, there is virtual calibrator for instrument transformer, about the front end face of virtual calibrator for instrument transformer is fitted with vertically, two are arranged symmetrically with connecting axle, in virtual calibrator for instrument transformer, corresponding two connecting axles are fitted with the straight pin of a radial arrangement, on every connecting axle, straight pin is provided with pin position groove relatively, this pin position groove is provided with two locating surfaces of ganging up, and makes connecting axle can realize the rotation of 60 ± 5 °; Described two connecting axles stretch out one section, and two of the left and right eccentric block being arranged symmetrically with is installed on two connecting axles, and the opposite face of left and right two eccentric blocks is slidably connected mutually, is all embedded with some alloy cutter heads on two eccentric blocks.
Rear at virtual calibrator for instrument transformer in the present invention is provided with colored being healthy and strong.
In the present invention, on virtual calibrator for instrument transformer outer wall, have some axial row's powder grooves; In virtual calibrator for instrument transformer, have some axial blowing mud holes.
Straight pin arrival end in the present invention on virtual calibrator for instrument transformer is pressed with holding pin.
The center line angle at 45 ° of the straight pin described in the present invention on virtual calibrator for instrument transformer and virtual calibrator for instrument transformer section is arranged.
Eccentric block described in the present invention is to adopt straight pin to be fixedly connected with holding pin with connecting axle.
Described in the present invention, two eccentric block opposite faces are plane, and outside is arcwall face structure.
The outer end of eccentric block described in the present invention is cascaded surface, is embedded with some alloy cutter heads on ladder table top and sidewall.
The present invention designs ingenious, simple in structure, reliable operation, has particularly adopted the two eccentric block cutter head structures that are symmetrically arranged, during work, two eccentric blocks and two connecting axles turn an angle simultaneously, realize and open simultaneously and draw in, thereby guarantee that drill bit radial force is even, head is not fragile, and bidirectional open mode is conducive to counter bore diameter and increases, make can well along boring, fall with pipe.
Accompanying drawing explanation
Fig. 1 is the perspective view of existing single eccentric block drill bit;
Fig. 2 is the main sectional view of existing single eccentric block drill bit;
Fig. 3 is perspective view of the present invention;
Fig. 4 is front view of the present invention;
Fig. 5 is the A-A view of Fig. 4;
Fig. 6 is the B-B view of Fig. 4.
In figure: 1-virtual calibrator for instrument transformer, 2-eccentric block, 3-cutter head, 4-virtual calibrator for instrument transformer, 5-cascaded surface, 6-alloy cutter head, 7-left eccentric block, 8-right eccentric block, 9-row powder groove, 10-flower is healthy and strong, 11-blowing mud hole, 12-connecting axle, 13-holding pin, 14-straight pin, 15-holding pin, 16-straight pin, 17-pin position groove.
The specific embodiment
Referring to Fig. 3-6, the present invention has virtual calibrator for instrument transformer 4, about the front end face of virtual calibrator for instrument transformer 4 is fitted with vertically, two are arranged symmetrically with connecting axle 12, in virtual calibrator for instrument transformer 1, corresponding two connecting axles 12 are fitted with the straight pin 16 of a radial arrangement, on every connecting axle 12, straight pin 16 is provided with pin position groove 17 relatively, this pin position groove 17 is provided with two locating surfaces of ganging up, and makes connecting axle 12 can realize the rotation of 60 ± 5 °; Described two connecting axles 12 stretch out one section, two of the left and right eccentric block 7 and 8 being arranged symmetrically with is installed on two connecting axles 12, the opposite face of left and right two eccentric blocks is slidably connected mutually, is all embedded with 8 alloy cutter head 6(and determines number according to the specification that varies in size on two eccentric block 2 end faces).
In the present embodiment, at the rear of virtual calibrator for instrument transformer 4, be provided with flower and be healthy and strong 10.
In the present embodiment, on virtual calibrator for instrument transformer 4 outer walls, have some axial row's powder grooves 9; In virtual calibrator for instrument transformer, have some axial blowing mud holes 11.
Straight pin 16 arrival ends in the present embodiment on virtual calibrator for instrument transformer 4 are pressed with holding pin 15.
Straight pin 16 on virtual calibrator for instrument transformer described in the present embodiment 4 is arranged with the center line angle at 45 ° of virtual calibrator for instrument transformer 4 sections.
Eccentric block described in the present embodiment 2 is to adopt straight pin 14 to be fixedly connected with holding pin 13 with connecting axle 12.
Described in the present embodiment, two eccentric block 2 opposite faces are plane, and outside is arcwall face structure.
The outer end of eccentric block described in the present embodiment 2 is cascaded surface 5, is embedded with 5 alloy cutter heads 6 on ladder table top and sidewall.
Claims (8)
1. two eccentric block reaming bits of a symmetrical expression, there is virtual calibrator for instrument transformer, about the front end face of virtual calibrator for instrument transformer is fitted with vertically, two are arranged symmetrically with connecting axle, in virtual calibrator for instrument transformer, corresponding two connecting axles are fitted with the straight pin of a radial arrangement, on every connecting axle, straight pin is provided with pin position groove relatively, this pin position groove is provided with two locating surfaces of ganging up, and makes connecting axle can realize the rotation of 60 ± 5 °; Described two connecting axles stretch out one section, and two of the left and right eccentric block being arranged symmetrically with is installed on two connecting axles, and the opposite face of left and right two eccentric blocks is slidably connected mutually, is all embedded with some alloy cutter heads on two eccentric blocks.
2. the two eccentric block reaming bits of a kind of symmetrical expression according to claim 1, is characterized in that: the rear at virtual calibrator for instrument transformer is provided with colored being healthy and strong.
3. the two eccentric block reaming bits of a kind of symmetrical expression according to claim 1, is characterized in that: on virtual calibrator for instrument transformer outer wall, have some axial row's powder grooves; In virtual calibrator for instrument transformer, have some axial blowing mud holes.
4. the two eccentric block reaming bits of a kind of symmetrical expression according to claim 1, is characterized in that: the straight pin arrival end on virtual calibrator for instrument transformer is pressed with holding pin.
5. according to the two eccentric block reaming bits of a kind of symmetrical expression described in claim 1 or 4, it is characterized in that: the center line angle at 45 ° of the straight pin on described virtual calibrator for instrument transformer and virtual calibrator for instrument transformer section is arranged.
6. the two eccentric block reaming bits of a kind of symmetrical expression according to claim 1, is characterized in that: described eccentric block is to adopt straight pin to be fixedly connected with holding pin with connecting axle.
7. the two eccentric block reaming bits of a kind of symmetrical expression according to claim 1, is characterized in that: described two eccentric block opposite faces are plane, and outside is arcwall face structure.
8. according to the two eccentric block reaming bits of a kind of symmetrical expression described in claim 1 or 4, it is characterized in that: the outer end of described eccentric block is cascaded surface, on ladder table top and sidewall, be embedded with some alloy cutter heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263019.5A CN104018781B (en) | 2014-06-13 | 2014-06-13 | Symmetric double-eccentric block reamer bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263019.5A CN104018781B (en) | 2014-06-13 | 2014-06-13 | Symmetric double-eccentric block reamer bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104018781A true CN104018781A (en) | 2014-09-03 |
| CN104018781B CN104018781B (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410263019.5A Expired - Fee Related CN104018781B (en) | 2014-06-13 | 2014-06-13 | Symmetric double-eccentric block reamer bit |
Country Status (1)
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| CN (1) | CN104018781B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620584A (en) * | 2017-10-27 | 2018-01-23 | 山东祺龙海洋石油钢管股份有限公司 | Split centering type fast assembling-disassembling connecting pin |
| CN111058772A (en) * | 2019-12-27 | 2020-04-24 | 长沙黑金刚实业有限公司 | Eccentric drilling tool |
| CN114129227A (en) * | 2022-02-08 | 2022-03-04 | 广州博鑫医疗技术有限公司 | Manufacturing tool and manufacturing method of eccentric rotary grinding head and intervention type rotary grinding device |
| CN114856429A (en) * | 2022-04-22 | 2022-08-05 | 北京中煤矿山工程有限公司 | Horizontal raise boring bit with slag skimming and conveying functions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183415A (en) * | 1977-11-21 | 1980-01-15 | Stenuick France | Drilling apparatus |
| JPH10331560A (en) * | 1997-05-28 | 1998-12-15 | Norio Kagota | Excavating device |
| CN202194575U (en) * | 2011-07-14 | 2012-04-18 | 中国地质科学院探矿工艺研究所 | Air down-the-hole hammer centering casing drill |
| CN202360029U (en) * | 2011-10-26 | 2012-08-01 | 倪建伦 | Novel concentric tube drill |
| CN103032029A (en) * | 2012-12-06 | 2013-04-10 | 中国地质科学院探矿工艺研究所 | Double-torque transmission concentric pipe-following drilling tool |
| CN203925291U (en) * | 2014-06-13 | 2014-11-05 | 武穴市金箭机械有限责任公司 | The two eccentric block reaming bits of a kind of symmetrical expression |
-
2014
- 2014-06-13 CN CN201410263019.5A patent/CN104018781B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183415A (en) * | 1977-11-21 | 1980-01-15 | Stenuick France | Drilling apparatus |
| JPH10331560A (en) * | 1997-05-28 | 1998-12-15 | Norio Kagota | Excavating device |
| CN202194575U (en) * | 2011-07-14 | 2012-04-18 | 中国地质科学院探矿工艺研究所 | Air down-the-hole hammer centering casing drill |
| CN202360029U (en) * | 2011-10-26 | 2012-08-01 | 倪建伦 | Novel concentric tube drill |
| CN103032029A (en) * | 2012-12-06 | 2013-04-10 | 中国地质科学院探矿工艺研究所 | Double-torque transmission concentric pipe-following drilling tool |
| CN203925291U (en) * | 2014-06-13 | 2014-11-05 | 武穴市金箭机械有限责任公司 | The two eccentric block reaming bits of a kind of symmetrical expression |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620584A (en) * | 2017-10-27 | 2018-01-23 | 山东祺龙海洋石油钢管股份有限公司 | Split centering type fast assembling-disassembling connecting pin |
| CN111058772A (en) * | 2019-12-27 | 2020-04-24 | 长沙黑金刚实业有限公司 | Eccentric drilling tool |
| CN111058772B (en) * | 2019-12-27 | 2024-04-26 | 长沙黑金刚实业有限公司 | Eccentric drilling tool |
| CN114129227A (en) * | 2022-02-08 | 2022-03-04 | 广州博鑫医疗技术有限公司 | Manufacturing tool and manufacturing method of eccentric rotary grinding head and intervention type rotary grinding device |
| CN114856429A (en) * | 2022-04-22 | 2022-08-05 | 北京中煤矿山工程有限公司 | Horizontal raise boring bit with slag skimming and conveying functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104018781B (en) | 2017-02-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CP03 | Change of name, title or address |
Address after: 435400 No. 166 Guangji Avenue, Wuxue City, Huanggang City, Hubei Province (Xiaguan Industrial Park) Patentee after: WUXUE MINGRUI MACHINERY CO., LTD. Address before: 435400 Huanggang city of Hubei province Wuxue Guangji Road West, No. 166 Patentee before: Wuxue City gold arrow machinery Co., Ltd |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20200613 |