CN203925495U - Buffer-type welding pick-shaped cutter for coal-winning machine - Google Patents
Buffer-type welding pick-shaped cutter for coal-winning machine Download PDFInfo
- Publication number
- CN203925495U CN203925495U CN201420284775.1U CN201420284775U CN203925495U CN 203925495 U CN203925495 U CN 203925495U CN 201420284775 U CN201420284775 U CN 201420284775U CN 203925495 U CN203925495 U CN 203925495U
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- CN
- China
- Prior art keywords
- protective sleeve
- blind hole
- carbide bit
- denticle
- outer end
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Abstract
The utility model relates to buffer-type welding pick-shaped cutter for a kind of coal-winning machine.It comprises denticle, is characterized in that there is blind hole at denticle front end center, has protective sleeve in blind hole.All there is annular groove the corresponding position of protective sleeve cylindrical and blind hole inner circle, useful circlip in annular groove.In protective sleeve, be short between outer end and have successively spring, cushion block and carbide bit, carbide bit outer end is for being similar to taper and stretching out outside protective sleeve outer end.Wherein, outer section of section carbide bit of that in protective sleeve and the cover of that segment protect be correspondingly inner large outside little conical section.The outer end lateral surface of protective sleeve is taper, and the overhanging end of protective sleeve stretches out outside described blind hole, and the overhanging end tapering of protective sleeve and the overhanging end tapering of carbide bit are suitable.This pick-shaped cutter, can not come off between denticle and carbide bit, long working life.Be applicable on the coal-winning machine in colliery.
Description
Technical field
The utility model 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 separated and come off.Wherein, produce separation and the main cause of obscission have following some: the one, because welding position abrasion resistance is poor, cause; The 2nd, due to coefficient of thermal expansion different cause of welding material from 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.
Utility model content
Problem to be solved in the utility model is to provide buffer-type welding pick-shaped cutter for a kind of coal-winning machine.This pick-shaped cutter, can not come off between denticle and carbide bit, long working life.
The problems referred to above to be solved in the utility model are realized by following technical scheme:
Coal-winning machine of the present utility model comprises denticle with buffer-type welding pick-shaped cutter; the leading portion of described denticle is approximate taper; there is blind hole at the front end center that is characterized in 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 utility model 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 utility model 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.Described protective sleeve and blind hole axially between be fixed and coordinate.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 utility model does not adopt traditional denticle and the welding procedure between carbide bit, has eliminated the hidden danger that welding brings.During 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.In carbide bit bottom, be encased inside cushion block and spring 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 fixedly effect of 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 utility model only protective sleeve adopts alloy steel, through appropriate heat treatment, can greatly improve its abrasion resistance, and without making whole denticle with expensive alloy steel.The spring that stressed carbide bit bottom arranges, in the time of can avoiding work, 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 utility model be applicable in the working environment of different hardness.
Therefore, the utility model is compared with the 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 hard mineral matters such as quartz sand, granite, thereby has greatly extended the application life of pick-shaped cutter.
Accompanying drawing explanation
Fig. 1 is buffer-type welding pick-shaped cutter structural representation for coal-winning machine of the present utility model.
The specific embodiment
As shown in Figure 1, coal-winning machine of the present utility model 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 7 of protective sleeve 5 and described blind holes axially be secure fit.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 utility model, 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 for strengthening the Chromizing Layer of its hardness.
For ease of installing, the outside of described protective sleeve inner end is processed with chamfering.
During 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.In 6 bottoms of carbide cutter tool, be encased inside cushion block 4 and spring 3 again.Then; pack in the blind hole 7 of denticle 1 front end; by annular groove and the circlip in annular groove 2 in protective sleeve 5 cylindricals and blind hole 7 inner circles, 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 |
|---|---|---|---|
| CN201420284775.1U CN203925495U (en) | 2014-05-30 | 2014-05-30 | Buffer-type welding pick-shaped cutter for coal-winning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420284775.1U CN203925495U (en) | 2014-05-30 | 2014-05-30 | Buffer-type welding pick-shaped cutter for coal-winning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925495U true CN203925495U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420284775.1U Expired - Fee Related CN203925495U (en) | 2014-05-30 | 2014-05-30 | Buffer-type welding pick-shaped cutter for coal-winning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203925495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005764A (en) * | 2014-05-30 | 2014-08-27 | 无锡正大轴承机械制造有限公司 | Buffered weldless pick-shaped cutter for coal mining machine |
| CN106351657A (en) * | 2016-10-09 | 2017-01-25 | 杨岗 | Novel cutting pick |
-
2014
- 2014-05-30 CN CN201420284775.1U patent/CN203925495U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005764A (en) * | 2014-05-30 | 2014-08-27 | 无锡正大轴承机械制造有限公司 | Buffered weldless pick-shaped cutter for coal mining machine |
| CN106351657A (en) * | 2016-10-09 | 2017-01-25 | 杨岗 | Novel cutting pick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214192, Rong Qiang Road 1, Furong Industrial Park, Xishan economic and Technological Development Zone, Wuxi, Jiangsu, China Patentee after: WUXI ZHENGDA BEARING MACHINERY MANUFACTURING COMPANY LIMITED Address before: 214192, Rong Qiang Road 1, Furong Industrial Park, Xishan economic and Technological Development Zone, Wuxi, Jiangsu, China Patentee before: Wuxi Zhengda Bearing Machinery Manufacturing Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |