CN2926504Y - Hard-alloy coalcutting tooth - Google Patents
Hard-alloy coalcutting tooth Download PDFInfo
- Publication number
- CN2926504Y CN2926504Y CN 200620050856 CN200620050856U CN2926504Y CN 2926504 Y CN2926504 Y CN 2926504Y CN 200620050856 CN200620050856 CN 200620050856 CN 200620050856 U CN200620050856 U CN 200620050856U CN 2926504 Y CN2926504 Y CN 2926504Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- coal cutting
- denticle
- cutting teeth
- cutting coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a hard mental tooth for cutting coal which comprises a cylindrical denticle with at least three locating pieces with the same outstanding height provided on the wall of the circle. Because of the three locating pieces with the same outstanding height and the height of the locating pieces around the denticle equal to the preset clearance of the matching hole on the stalk, when embedded and welded in the matching hole on the denticle, the tooth for cutting coal can be assuredly in the central position of the corresponding hole and uniform, consistent and symmetrical with the width of the welding seam between the wall of the matching hole to assure the centers of the tooth for cutting coal and cutting coal driller are coaxial. The hard mental tooth for cutting coal can avoid the internal stress of the welding seam uniformly and equably increase the compressive stress of the circle, assuring high strength, high wear resistance and stability of the tooth for cutting coal at normal temperature.
Description
Technical field
The utility model belongs to the mine boring tool, is specifically related to a kind of hard alloy coal cutting teeth.
Background technology
At present, hard alloy coal cutting teeth still continues to continue to use the technology of the fifties former Soviet Union in last century.This technology is that hard alloy coal cutting teeth is assemblied on the handle body of pre-drilled corresponding aperture.Owing to can't guarantee the uniformity and the symmetry of weld seam between coal cutting teeth circumferential wall and the handle body during assembling, the center that also just can't guarantee hard alloy coal cutting teeth is on the central point that coal cutting bores, cause the center of hard alloy coal cutting teeth and the center disalignment that coal cutting bores, wearing and tearing are asymmetric in the use, malaria when cutter advances, and very easily fall tooth, collapse tooth, application life and efficient are short and unstable, waste problems such as tungsten resource in a large number.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art and a kind of new hard alloy coal cutting teeth is provided, this hard alloy coal cutting teeth can accurately be located on the handle body that coal cutting bores when assembling, make that weld seam has uniformity and symmetry between itself and the handle body, its center is coaxial with the center that coal cutting bores.
The utility model is to realize goal of the invention like this.Hard alloy coal cutting teeth comprises the column type denticle, is provided with at least three locating pieces that projecting height is identical on the denticle circumferential wall, and the distribution of locating piece on circumferential wall preferably symmetrically.The shape of locating piece can be a different shape, as bar shaped, circle, hemisphere face body, square or other irregular shape.
In the described technical scheme, the locating piece on the coal cutting teeth denticle circumferential wall is vertical bar shaped, is four symmetrical distributions, and this scheme is easier to make the coal cutting teeth location.
In the described technical scheme, the locating piece on the coal cutting teeth circumferential wall is the hemisphere face body, and by four groups of symmetrical distributions, every group comprises symmetrical two up and down, and eight symmetrical locating pieces are promptly arranged, and this scheme more easily makes coal cutting teeth be positioned the central authorities of handle body corresponding aperture.
Owing on the denticle circumferential wall of hard alloy coal cutting teeth the identical locating piece of rising height is arranged, and the height of the locating piece around the denticle equals the preset clearance of pilot hole on the handle body, just can guarantee that when the coal cutting teeth scarfweld is in the denticle pilot hole coal cutting teeth denticle is positioned at the middle position of corresponding aperture, the intact back of soldering just can guarantee throat depth uniformity and the symmetry between coal cutting teeth denticle and assembling hole wall, guarantees that its center is coaxial with the center that coal cutting bores.The weld seam of thickness uniformity and symmetry can improve weld strength, make hard alloy coal cutting teeth can be subjected to the even compressive stress of weld seam, guarantee internal stress that hard alloy coal cutting teeth Yin Gaowen in brazing process the produces uniformity that disappears, the hard alloy coal cutting teeth stable performance is not changed, keep the intensity unanimity.The center that hard alloy coal cutting teeth and coal cutting bore is coaxial, can guarantee to improving product percent of pass, to improve high strength, high-wearing feature, the high stability used its normal temperature under and cut a hole efficient, and increasing the service life etc. has obvious effects.
Further specify the technical solution of the utility model below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the new front view of this practicality.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is a different structure schematic diagram of the present utility model.
Fig. 4 is user mode figure of the present utility model.
The specific embodiment
See Fig. 1, Fig. 2, the utility model hard alloy coal cutting teeth comprises denticle 1, and the rising height of 2, four locating pieces 2 of the locating piece of bar shaped longitudinally that the cylindricality circumferential wall of denticle 1 is provided with four symmetrical distributions is identical.
The another kind of structure of the utility model coal cutting teeth is seen Fig. 3, is symmetrically distributed with eight locating pieces 2 on the circumferential wall of denticle 1, and the rising height of locating piece 2 is identical.
As shown in Figure 4, coal cutting teeth denticle 1 is in the pilot hole of high-temperature soldering on steel work handle body 4, because the rising height of the locating piece 2 on denticle 1 circumferential wall is identical, so formed the weld seam 3 of consistency of thickness around the pilot hole on this steel handle 4.
Claims (5)
1, a kind of hard alloy coal cutting teeth comprises the column type denticle, it is characterized in that being provided with on the denticle circumferential wall at least three locating pieces that projecting height is identical.
2, hard alloy coal cutting teeth according to claim 1, the shape that it is characterized in that locating piece can be bar shaped, circle, hemisphere face body, square.
3, hard alloy coal cutting teeth according to claim 2 is characterized in that locating piece is symmetrically distributed on circumferential wall.
4, hard alloy coal cutting teeth according to claim 3 is characterized in that locating piece is four symmetrical distributions of vertical bar shaped.
5, hard alloy coal cutting teeth according to claim 3 is characterized in that locating piece is the hemisphere face body, and by four groups of symmetrical distributions, every group comprises symmetrical two up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620050856 CN2926504Y (en) | 2006-05-08 | 2006-05-08 | Hard-alloy coalcutting tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620050856 CN2926504Y (en) | 2006-05-08 | 2006-05-08 | Hard-alloy coalcutting tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926504Y true CN2926504Y (en) | 2007-07-25 |
Family
ID=38280748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620050856 Expired - Fee Related CN2926504Y (en) | 2006-05-08 | 2006-05-08 | Hard-alloy coalcutting tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2926504Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313412A (en) * | 2010-07-01 | 2012-01-11 | 浙江三花制冷集团有限公司 | Matching device of barrel body and connecting pipe |
-
2006
- 2006-05-08 CN CN 200620050856 patent/CN2926504Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313412A (en) * | 2010-07-01 | 2012-01-11 | 浙江三花制冷集团有限公司 | Matching device of barrel body and connecting pipe |
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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: 20070725 Termination date: 20100508 |