CN203925291U - The two eccentric block reaming bits of a kind of symmetrical expression - Google Patents
The two eccentric block reaming bits of a kind of symmetrical expression Download PDFInfo
- Publication number
- CN203925291U CN203925291U CN201420315249.7U CN201420315249U CN203925291U CN 203925291 U CN203925291 U CN 203925291U CN 201420315249 U CN201420315249 U CN 201420315249U CN 203925291 U CN203925291 U CN 203925291U
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- China
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- eccentric block
- instrument transformer
- virtual calibrator
- symmetrical expression
- eccentric
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Abstract
The utility model relates to engineering construction tapping equipment component, the two eccentric block reaming bits of symmetrical expression that a kind of supporting rig, impactor use, it has virtual calibrator for instrument transformer, front end face at virtual calibrator for instrument transformer is fitted with two connecting axles that are arranged symmetrically with in left and right vertically, 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, and 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; The utility model has overcome existing single eccentric block reaming bit, and radial force is inhomogeneous, easy bit freezing, and the problem such as counter bore diameter is less, is mainly used in underground punching cement grouting and does foundation pile.
Description
Technical field
The utility model 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
The purpose of this utility model 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 utility model 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 utility model is provided with colored being healthy and strong.
In the utility model, 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 utility model on virtual calibrator for instrument transformer is pressed with holding pin.
The center line angle at 45 ° of the straight pin described in the utility model on virtual calibrator for instrument transformer and virtual calibrator for instrument transformer section is arranged.
Eccentric block described in the utility model is to adopt straight pin to be fixedly connected with holding pin with connecting axle.
Described in the utility model, two eccentric block opposite faces are plane, and outside is arcwall face structure.
The outer end of eccentric block described in the utility model is cascaded surface, is embedded with some alloy cutter heads on ladder table top and sidewall.
The utility model design is 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 utility model;
Fig. 4 is front view of the present utility model;
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 utlity model 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 |
|---|---|---|---|
| CN201420315249.7U CN203925291U (en) | 2014-06-13 | 2014-06-13 | The two eccentric block reaming bits of a kind of symmetrical expression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315249.7U CN203925291U (en) | 2014-06-13 | 2014-06-13 | The two eccentric block reaming bits of a kind of symmetrical expression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925291U true CN203925291U (en) | 2014-11-05 |
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ID=51821120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420315249.7U Expired - Fee Related CN203925291U (en) | 2014-06-13 | 2014-06-13 | The two eccentric block reaming bits of a kind of symmetrical expression |
Country Status (1)
| Country | Link |
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| CN (1) | CN203925291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018781A (en) * | 2014-06-13 | 2014-09-03 | 武穴市金箭机械有限责任公司 | Symmetric double-eccentric block reamer bit |
-
2014
- 2014-06-13 CN CN201420315249.7U patent/CN203925291U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018781A (en) * | 2014-06-13 | 2014-09-03 | 武穴市金箭机械有限责任公司 | Symmetric double-eccentric block reamer bit |
| CN104018781B (en) * | 2014-06-13 | 2017-02-15 | 武穴市金箭机械有限责任公司 | Symmetric double-eccentric block reamer bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |