CN104005764A - Buffered weldless pick-shaped cutter for coal mining machine - Google Patents
Buffered weldless pick-shaped cutter for coal mining machine Download PDFInfo
- Publication number
- CN104005764A CN104005764A CN201410236634.7A CN201410236634A CN104005764A CN 104005764 A CN104005764 A CN 104005764A CN 201410236634 A CN201410236634 A CN 201410236634A CN 104005764 A CN104005764 A CN 104005764A
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- CN
- China
- Prior art keywords
- protective sleeve
- carbide bit
- blind hole
- pick
- shaped cutter
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Abstract
The invention relates to a buffered weldless pick-shaped cutter for a coal mining machine. The buffered weldless pick-shaped cutter is composed of a cutter body and is characterized in that the center of the front end of the cutter body is provided with a blind hole in which a protective cover is arranged; the corresponding parts of the outer circle of the protective cover and the inner circle of the blind hole are respectively provided with an annular groove, and the annular grooves are internally provided with elastic check rings; a spring, a cushion block and a carbide bit are sequentially arranged from the inner end to the outer end of the protective cover, and the outer end of the carbide bit is approximately tapered and extends out of the outer end of the protective cover; the outer sections of a carbide bit section in the protective cover and a protective cover section corresponding to the carbide bit section are both a tapered section which is large inside and small outside; the outer side of the outer end of the protective cover is tapered, the outwards extending end of the protective cover extends out of the blind hole, and the taper of the outwards extending end of the protective cover is matched with the taper of the outwards extending end of the carbide bit. The pick-shaped cutter has the advantages that the cutter body and the carbide bit cannot fall off, and the pick-shaped cutter is long in working life. The pick-shaped cutter is suitable for the coal mining machine for a coal mine.
Description
Technical field
The present invention relates to a kind of coal mine machinery accessory.Specifically, be the welding pick-shaped cutter with pooling feature on coal-winning machine.
Background technology
At present, on coal-winning machine, pick-shaped cutter used is mostly that the denticle made from common iron is made with being welded on the carbide bit of denticle front end.The failure mode of this pick-shaped cutter be mainly denticle with the carbide bit of its front end between separate and come off.Wherein, produce separate and the main cause of obscission have following some: the one, cause because welding position abrasion resistance is poor; The 2nd, due to welding material and different the causing of coefficient of thermal expansion of denticle and carbide cutter tool head material; The 3rd, because the mechanical strength of welding position produces tired causing compared with stress low, that be not enough to the work of resisting.Therefore, between the denticle of above-mentioned pick-shaped cutter and the carbide bit of its front end, easily come off, working life is short.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of coal-winning machine buffer-type welding pick-shaped cutter.This pick-shaped cutter, can not come off between denticle and carbide bit, long working life.
The problems referred to above that the present invention will solve are realized by following technical scheme:
Coal-winning machine of the present invention comprises denticle with buffer-type welding pick-shaped cutter, and the leading portion of described denticle, for approximate taper, is characterized in that there is blind hole at the front end center of described denticle, has protective sleeve in blind hole, and the outside diameter of protective sleeve and the diameter of described blind hole are suitable.All there is annular groove the corresponding position of described protective sleeve cylindrical and blind hole inner circle, is useful on protective sleeve is carried out to the axially circlip of locking in annular groove.In described protective sleeve, be short between outer end and have successively spring, cushion block and carbide bit, the outer end of described carbide bit is for being similar to taper and stretching out outside described protective sleeve outer end.Wherein, section carbide bit of that in protective sleeve and the cover of that segment protect correspondingly outer section be inner large outside little conical section, for preventing that carbide bit from outwards skidding off.The outer end lateral surface of described protective sleeve is taper, and the overhanging end of described protective sleeve stretches out outside described blind hole, and the overhanging end tapering of described protective sleeve and the overhanging end tapering of carbide bit are suitable.
Further improvement of the present invention scheme is on described protective sleeve lateral surface, to be useful on and to strengthen oozing spring layer, Chromizing Layer or oozing tungsten layer of its hardness.
Further improvement project of the present invention is that the outside of described protective sleeve inner end has chamfering.
Take such scheme, have the following advantages:
As can be seen from the above scheme, because there is blind hole at denticle front end center, have protective sleeve in blind hole, the outside diameter of protective sleeve and the diameter of described blind hole are suitable.Between the axial direction of described protective sleeve and blind hole, being fixed coordinates.The inner end of described protective sleeve is to being disposed with spring, cushion block and carbide bit between outer end, and the outer end of described carbide bit is for being similar to taper and stretching out outside protective sleeve outer end.Wherein, that in protective sleeve section carbide bit and the cover of that segment protect correspondingly outer section be inner large outside little conical section; make that section of carbide bit and that segment protect correspondingly in protective sleeve overlap the taper that equal outer end diameter is large, inner end diameter is little, avoided carbide bit outwards to skid off.The outer end lateral surface of described protective sleeve is taper, and the overhanging end of described protective sleeve stretches out outside described blind hole, and the overhanging end tapering of described protective sleeve and the overhanging end tapering of carbide bit are suitable.This shows, the present invention does not adopt the welding procedure between traditional denticle and carbide bit, has eliminated the hidden danger that welding brings.When installation, first the carbide bit with certain taper is pushed from protective sleeve bottom, carbide bit is bumped in the protective sleeve with identical tapering.Be encased inside cushion block and spring in carbide bit bottom again.Then, pack in the blind hole of denticle front end, by the annular groove in protective sleeve cylindrical and blind hole inner circle and the circlip in annular groove, the spring in protective sleeve and protective sleeve, cushion block are inlayed in the blind hole that fixes on denticle together with carbide bit.Wherein, protective sleeve plays two effects: (1) as the connector between carbide bit and denticle, has exempted original welding and the hidden danger brought, plays equally the effect of fixing carbide bit; (2) original denticle wears no resistance, and as improved its abrasion resistance, just must use alloy steel.And can increase a lot of costs with alloy steel.The present invention only protective sleeve adopts alloy steel, can greatly improve its abrasion resistance through appropriate heat treatment, and without making whole denticle with expensive alloy steel.The spring that stressed carbide bit bottom arranges, can avoid work time, the undue stress of carbide bit is concentrated, and has avoided cutter head to burst apart.By the rigidity of regulating spring, can make pick of the present invention be applicable in the working environment of different hardness.
Therefore, the present invention, compared with pick-shaped cutter in background technology, has avoided situation about coming off between denticle leading portion and back segment to occur.
Again owing to taking said structure, and on described protective sleeve lateral surface, infiltration is useful on and strengthens oozing of its hardness jump layer, Chromizing Layer or ooze tungsten layer, makes hardness higher than the hard mineral matter such as quartz sand, granite, thereby has greatly extended the application life of pick-shaped cutter.
Brief description of the drawings
Fig. 1 is coal-winning machine of the present invention buffer-type welding pick-shaped cutter structural representation.
Detailed description of the invention
As shown in Figure 1, coal-winning machine of the present invention comprises denticle 1 with buffer-type welding pick-shaped cutter, and the leading portion of described denticle 1 is approximate taper.The front end center of described denticle 1 is processed with a blind hole 7, and protective sleeve 5 is installed in blind hole 7, and the diameter of the outside diameter of protective sleeve 5 and described blind hole 7 is suitable.In described protective sleeve 5, on section cylindrical and the inner circle corresponding position of 7 li of sections of blind hole is all processed with annular groove, is provided with for protective sleeve 5 being carried out to the axially circlip 2 of locking in annular groove, makes be axially secure fit between protective sleeve 5 and described blind hole 7.In the inner end of described protective sleeve 5, to being disposed with spring 3, cushion block 4 and carbide bit 6 between outer end, the outer end of described carbide bit 6 is for approximate taper and stretch out outside described protective sleeve 5 outer ends.Wherein, the outer end diameter of that section of carbide bit 6 in protective sleeve 5 and that segment protect cover 5 correspondingly is all greater than their inner end diameter, makes them be taper, for preventing that carbide bit 6 from outwards skidding off.The outer end lateral surface of described protective sleeve 5 is processed into taper, and the overhanging end of described protective sleeve 5 stretches out outside described blind hole 7, and the overhanging end tapering of described protective sleeve 5 and the overhanging end tapering of carbide bit 6 are suitable.
For improving application life of the present invention, on described protective sleeve 5 lateral surfaces, be processed with for strengthening oozing spring layer, Chromizing Layer or oozing tungsten layer of its hardness.In the present embodiment, on protective sleeve 5 lateral surfaces, be processed with the Chromizing Layer for strengthening its hardness.
For ease of installing, the outside of described protective sleeve inner end is processed with chamfering.
When installation, first the carbide bit with certain taper 6 is pushed from protective sleeve 5 bottoms, carbide bit 6 is bumped in the protective sleeve 5 with identical tapering.Be encased inside cushion block 4 and spring 3 in 6 bottoms of carbide cutter tool again.Then; pack in the blind hole 7 of denticle 1 front end; by the annular groove in protective sleeve 5 cylindricals and blind hole 7 inner circles and the circlip 2 in annular groove, the spring 3 in protective sleeve 5 and protective sleeve 5, cushion block 4 are inlayed in the blind hole 7 that fixes on denticle 1 together with carbide bit 6.
Claims (3)
1. buffer-type welding pick-shaped cutter for coal-winning machine, comprise denticle (1), the leading portion of described denticle (1) is approximate taper, there is blind hole (7) at the front end center that it is characterized in that described denticle (1), in blind hole (7), have protective sleeve (5), the diameter of the outside diameter of protective sleeve (5) and described blind hole (7) is suitable; All there is annular groove the corresponding position of described protective sleeve (5) cylindrical and blind hole (7) inner circle, is useful on protective sleeve (5) is carried out to the axially circlip (2) of locking in annular groove; The inner end of described protective sleeve (5) is to having successively spring (3), cushion block (4) and carbide bit (6) between outer end, and the outer end of described carbide bit (6) is for being similar to taper and stretching out outside protective sleeve (5) outer end; Wherein, that section of carbide bit (6) in protective sleeve (5) and that segment protect cover (5) correspondingly outer section be inner large outside little conical section, for preventing that carbide bit (6) from outwards skidding off; The outer end lateral surface of described protective sleeve (5) is taper, and the overhanging end of described protective sleeve (5) stretches out outside described blind hole (7), and the overhanging end tapering of the overhanging end tapering of described protective sleeve (5) and carbide bit (6) is suitable.
2. buffer-type welding pick-shaped cutter for coal-winning machine according to claim 1, is characterized in that being useful on and strengthening oozing spring layer, Chromizing Layer or oozing tungsten layer of its hardness on described protective sleeve (5) lateral surface.
3. buffer-type welding pick-shaped cutter for coal-winning machine according to claim 1 and 2, is characterized in that there is chamfering in the outside of described protective sleeve (5) inner end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236634.7A CN104005764A (en) | 2014-05-30 | 2014-05-30 | Buffered weldless pick-shaped cutter for coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236634.7A CN104005764A (en) | 2014-05-30 | 2014-05-30 | Buffered weldless pick-shaped cutter for coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104005764A true CN104005764A (en) | 2014-08-27 |
Family
ID=51366636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410236634.7A Pending CN104005764A (en) | 2014-05-30 | 2014-05-30 | Buffered weldless pick-shaped cutter for coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104005764A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604491A (en) * | 2016-03-16 | 2016-05-25 | 成都迪普金刚石钻头有限责任公司 | PDC cutting tooth based on damping structure |
| GB2559049A (en) * | 2016-12-22 | 2018-07-25 | Element Six Uk Ltd | Degradation tool |
| CN109252859A (en) * | 2018-09-25 | 2019-01-22 | 温州宝通机械制造有限公司 | It is a kind of for ditcher and the cutter head of coalcutter |
| CN115182726A (en) * | 2022-06-13 | 2022-10-14 | 河南黄河旋风股份有限公司 | Powder cushion buffer cutting pick and maintenance method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2356831A1 (en) * | 1976-06-29 | 1978-01-27 | Metafram | Drill bit for rock drill - is snapped into socket by radial deflection of garter spring in groove |
| DE2712174A1 (en) * | 1977-03-19 | 1978-09-28 | Werkzeug Union Gmbh | Mining machine pick holder - has spring-loaded press pin in stem bore with wider central diameter and end rims |
| CN2893144Y (en) * | 2006-03-13 | 2007-04-25 | 黑龙江科技学院 | Hard alloy tool bit coal cutting machine pick-shape cutting pick with taper |
| US7926883B2 (en) * | 2007-05-15 | 2011-04-19 | Schlumberger Technology Corporation | Spring loaded pick |
| CN202081893U (en) * | 2011-03-30 | 2011-12-21 | 徐伯兴 | Welding-free combined type cutting tooth of mining machine |
| CN102828750A (en) * | 2012-09-11 | 2012-12-19 | 三一重型装备有限公司 | Cutting pick device and mining machine |
| CN103233736A (en) * | 2013-04-16 | 2013-08-07 | 黑龙江科技学院 | Conical pick with non-arc conical surface carbide tip and elasticity function structure |
| CN203239349U (en) * | 2013-05-14 | 2013-10-16 | 王青俊 | Mining pickax-shaped cutter with wear-resistant protective ring |
| CN203925495U (en) * | 2014-05-30 | 2014-11-05 | 无锡正大轴承机械制造有限公司 | Buffer-type welding pick-shaped cutter for coal-winning machine |
-
2014
- 2014-05-30 CN CN201410236634.7A patent/CN104005764A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2356831A1 (en) * | 1976-06-29 | 1978-01-27 | Metafram | Drill bit for rock drill - is snapped into socket by radial deflection of garter spring in groove |
| DE2712174A1 (en) * | 1977-03-19 | 1978-09-28 | Werkzeug Union Gmbh | Mining machine pick holder - has spring-loaded press pin in stem bore with wider central diameter and end rims |
| CN2893144Y (en) * | 2006-03-13 | 2007-04-25 | 黑龙江科技学院 | Hard alloy tool bit coal cutting machine pick-shape cutting pick with taper |
| US7926883B2 (en) * | 2007-05-15 | 2011-04-19 | Schlumberger Technology Corporation | Spring loaded pick |
| CN202081893U (en) * | 2011-03-30 | 2011-12-21 | 徐伯兴 | Welding-free combined type cutting tooth of mining machine |
| CN102828750A (en) * | 2012-09-11 | 2012-12-19 | 三一重型装备有限公司 | Cutting pick device and mining machine |
| CN103233736A (en) * | 2013-04-16 | 2013-08-07 | 黑龙江科技学院 | Conical pick with non-arc conical surface carbide tip and elasticity function structure |
| CN203239349U (en) * | 2013-05-14 | 2013-10-16 | 王青俊 | Mining pickax-shaped cutter with wear-resistant protective ring |
| CN203925495U (en) * | 2014-05-30 | 2014-11-05 | 无锡正大轴承机械制造有限公司 | Buffer-type welding pick-shaped cutter for coal-winning machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604491A (en) * | 2016-03-16 | 2016-05-25 | 成都迪普金刚石钻头有限责任公司 | PDC cutting tooth based on damping structure |
| CN105604491B (en) * | 2016-03-16 | 2018-01-23 | 成都迪普金刚石钻头有限责任公司 | A kind of PDC cutting tooths based on shock-damping structure |
| GB2559049A (en) * | 2016-12-22 | 2018-07-25 | Element Six Uk Ltd | Degradation tool |
| CN109252859A (en) * | 2018-09-25 | 2019-01-22 | 温州宝通机械制造有限公司 | It is a kind of for ditcher and the cutter head of coalcutter |
| CN115182726A (en) * | 2022-06-13 | 2022-10-14 | 河南黄河旋风股份有限公司 | Powder cushion buffer cutting pick and maintenance method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |