CN104018781B - Symmetric double-eccentric block reamer bit - Google Patents
Symmetric double-eccentric block reamer bit Download PDFInfo
- Publication number
- CN104018781B CN104018781B CN201410263019.5A CN201410263019A CN104018781B CN 104018781 B CN104018781 B CN 104018781B CN 201410263019 A CN201410263019 A CN 201410263019A CN 104018781 B CN104018781 B CN 104018781B
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- CN
- China
- Prior art keywords
- eccentric block
- instrument transformer
- connecting shaft
- virtual calibrator
- straight pin
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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 parts, it is symmetrical that especially a kind of supporting rig, impacter use
The double eccentric block reaming bit of formula.
Background technology
Eccentric reaming drill bit is that supporting rig, impacter and sleeve pipe do the special of foundation pile for underground punching cement grouting
Drill bit.Existing eccentric reaming bore structure referring to Fig. 1,2, it has virtual calibrator for instrument transformer 1, docks equipped with cutter head 3 in the front end of virtual calibrator for instrument transformer,
It is set with an eccentric block at the middle part of cutter head, is embedded with some alloy cutter heads thereon, this is one kind typically single bias agllutination
Structure, this structure operationally, cutter head 3 and virtual calibrator for instrument transformer 1 relative to not rotating, one-piece machine member when turning clockwise, middle eccentric block 2
Eccentric orfice to relatively rotate generation around cutter head eccentric shaft eccentric（Open）, increase counter bore diameter, when rotate counterclockwise, middle
Eccentric block 2 draws in as 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 monolateral in reaming, radial force is uneven, and easily blocks, and so that drill bit is occurred
Scrap；2. in order to guarantee to bear certain radial force, the offset of design can not be excessive, and limiting counter bore diameter is not very
Greatly, make can not fall along hole well with pipe.
Content of the invention
Present invention aim to solving the reamer discontinuity of existing single eccentric block structure, easy bit freezing, expands
The less problem of bore dia, provides a kind of symmetrical expression double eccentric block reaming bit.
The concrete scheme of the present invention is：A kind of double eccentric block reaming bit of symmetrical expression, has virtual calibrator for instrument transformer, before virtual calibrator for instrument transformer
End face is fitted with left and right two vertically and is arranged symmetrically connecting shaft, and in virtual calibrator for instrument transformer, corresponding two connecting shafts are fitted with a radial direction cloth
The straight pin put, in every connecting shaft, straight pin relatively is provided with pins position groove, and this pins position groove is provided with two locating surfaces ganged up, and makes
Connecting shaft is capable of 60 ± 5 ° of rotation；Described two connecting shafts stretch out one section, and it is right to be provided with two connecting shafts
Claim left and right two eccentric block of arrangement, the opposite face of left and right two eccentric block is mutually slidably connected, and is all embedded with two eccentric blocks
Some alloy cutter heads.
In the present invention, the rear in virtual calibrator for instrument transformer is provided with flower and is healthy and strong.
Some axially row's powder grooves are had in the present invention on virtual calibrator for instrument transformer outer wall；Some axially blowings are had in virtual calibrator for instrument transformer
Mud hole.
In the present invention, the straight pin arrival end on virtual calibrator for instrument transformer is pressed with holding pin.
The center line angle at 45 ° arrangement of the straight pin on heretofore described virtual calibrator for instrument transformer and virtual calibrator for instrument transformer section.
Heretofore described eccentric block is to be fixedly connected using straight pin and holding pin with connecting shaft.
Heretofore described two eccentric block opposite faces are plane, and outside is arcwall face structure.
The outer end of heretofore described eccentric block is in cascaded surface, and ladder table top and side wall are embedded with some alloy cutter heads.
Present invention design is ingenious, and structure is simple, and reliable operation, especially with the double eccentric block knives being symmetrically arranged
Header structure, during work, double eccentric blocks and two connecting shafts turn an angle simultaneously, realize opening simultaneously and drawing in, thus protecting
Uniformly, head is hardly damaged card drill bit radial force, and bidirectional open mode is conducive to counter bore diameter to increase, and enables with pipe very
Good falls along boring.
Brief description
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 the perspective view of the present invention；
Fig. 4 is the 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 blocks, 3 cutter heads, 4 virtual calibrators for instrument transformer, 5 cascaded surfaces, 6 alloy cutter heads, 7
Left eccentric block, 8 right eccentric blocks, 9 row's powder grooves, 10 flowers are healthy and strong, 11 blowing mud holes, 12 connecting shafts, and 13 is tight
Gu pin, 14 straight pins, 15 holding pins, 16 straight pins, 17 pins position grooves.
Specific embodiment
Referring to Fig. 3-6, the present invention has virtual calibrator for instrument transformer 4, is fitted with left and right two vertically in the front end face of virtual calibrator for instrument transformer 4 symmetrical
Arrangement connecting shaft 12, in virtual calibrator for instrument transformer 4, corresponding two connecting shafts 12 are fitted with the straight pin 16 of a radial arrangement, connect at every
On axle 12, straight pin 16 relatively is provided with pins position groove 17, and this pins position groove 17 is provided with two locating surfaces ganged up, and enables connecting shaft 12
Realize 60 ± 5 ° of rotation；Described two connecting shafts 12 stretch out one section, be provided with and be arranged symmetrically in two connecting shafts 12
Left and right two eccentric block 7 and 8, the opposite face of left and right two eccentric block is mutually slidably connected, and is all embedded on two eccentric block end faces
There are 8 alloy cutter heads 6（According to determination number of different sizes）.
In the present embodiment, the rear in virtual calibrator for instrument transformer 4 is provided with flower and is healthy and strong 10.
Some axially row's powder grooves 9 are had in the present embodiment on virtual calibrator for instrument transformer 4 outer wall；Some axial directions are had in virtual calibrator for instrument transformer
Blowing mud hole 11.
In the present embodiment, straight pin 16 arrival end on virtual calibrator for instrument transformer 4 is pressed with holding pin 15.
The center line angle at 45 ° arrangement of the straight pin 16 on virtual calibrator for instrument transformer 4 described in the present embodiment and virtual calibrator for instrument transformer 4 section.
Eccentric block described in the present embodiment is to be fixedly connected using straight pin 14 and holding pin 13 with connecting shaft 12.
Described in the present embodiment, two eccentric block opposite faces are plane, and outside is arcwall face structure.
The outer end of eccentric block described in the present embodiment is in cascaded surface 5, and ladder table top and side wall are embedded with 5 alloy cutter heads
6.
Claims (6)
1. a kind of double eccentric block reaming bit of symmetrical expression, has virtual calibrator for instrument transformer, is fitted with left and right vertically in the front end face of virtual calibrator for instrument transformer
Two are arranged symmetrically connecting shaft, it is characterized in that：In virtual calibrator for instrument transformer, corresponding two connecting shafts are fitted with the straight pin of a radial arrangement,
In every connecting shaft, straight pin relatively is provided with pins position groove, and this pins position groove is provided with two locating surfaces ganged up, and enables connecting shaft
Realize 60 ± 5 ° of rotation；The center line angle at 45 ° arrangement of the straight pin on described virtual calibrator for instrument transformer and virtual calibrator for instrument transformer section, thus realize one
The root straight pin rotary spacing to two connecting shafts simultaneously, and the straight pin arrival end on virtual calibrator for instrument transformer is pressed with holding pin；
Described two connecting shafts stretch out one section, are provided with the left and right being arranged symmetrically two eccentric block, left and right in two connecting shafts
The opposite face of two eccentric blocks is mutually slidably connected, and is all embedded with some alloy cutter heads on two eccentric blocks.
2. a kind of double eccentric block reaming bit of symmetrical expression according to claim 1, is characterized in that：Set in the rear of virtual calibrator for instrument transformer
Flower is had to be healthy and strong.
3. a kind of double eccentric block reaming bit of symmetrical expression according to claim 1, is characterized in that：Virtual calibrator for instrument transformer outer wall is opened
There are some axially row's powder grooves；Some axially blowing mud holes are had in virtual calibrator for instrument transformer.
4. a kind of double eccentric block reaming bit of symmetrical expression according to claim 1, is characterized in that：Described eccentric block be connected
Axle is to be fixedly connected with holding pin using straight pin.
5. a kind of double eccentric block reaming bit of symmetrical expression according to claim 1, is characterized in that：Described two eccentric block phases
Opposite is plane, and outside is arcwall face structure.
6. a kind of double eccentric block reaming bit of the symmetrical expression according to claim 1 or 4, is characterized in that：Described eccentric block
Outer end is in cascaded surface, and ladder table top and side wall are 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 CN104018781A (en) | 2014-09-03 |
| CN104018781B true CN104018781B (en) | 2017-02-15 |
Family
ID=51435742
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)
| Country | Link |
|---|---|
| CN (1) | CN104018781B (en) |
Families Citing this family (3)
| 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 |
| CN111058772B (en) * | 2019-12-27 | 2024-04-26 | 长沙黑金刚实业有限公司 | Eccentric drilling tool |
| CN114129227B (en) * | 2022-02-08 | 2022-05-10 | 广州博鑫医疗技术有限公司 | Manufacturing tool and manufacturing method of eccentric rotary grinding head and intrusive rotary grinding device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183415A (en) * | 1977-11-21 | 1980-01-15 | Stenuick France | Drilling apparatus |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10331560A (en) * | 1997-05-28 | 1998-12-15 | Norio Kagota | Excavating device |
-
2014
- 2014-06-13 CN CN201410263019.5A patent/CN104018781B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183415A (en) * | 1977-11-21 | 1980-01-15 | Stenuick France | Drilling apparatus |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104018781A (en) | 2014-09-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| 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 |