CN102400687A - Special wedge-type section tooth structure for shearer drum - Google Patents
Special wedge-type section tooth structure for shearer drum Download PDFInfo
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- CN102400687A CN102400687A CN2011103750468A CN201110375046A CN102400687A CN 102400687 A CN102400687 A CN 102400687A CN 2011103750468 A CN2011103750468 A CN 2011103750468A CN 201110375046 A CN201110375046 A CN 201110375046A CN 102400687 A CN102400687 A CN 102400687A
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Abstract
The invention relates to a special wedge-type section tooth structure for a shearer drum, which comprises a wedge-type tooth hard alloy head and a wedge-type tooth body; the wedge-type tooth body and the wedge-type tooth hard alloy head are brazed together; the inclining angle lambda of an edge part of a wedge-type section tooth on the wedge-type tooth body is 40 degrees to 45 degrees, and the sharp angle of the wedge-type section tooth is 80 degrees to 90 degrees. A part of the wedge-type section tooth which extends out of a tooth seat is turned forwards for 30 degrees relative to a tooth handle, and is inclined forwards for 15 degrees and installed, i.e. is cut for 45 degrees on the drum. The special wedge-type section tooth structure for the shearer drum solves the problems that the length of a weld seam of the tooth seat on the drum is not enough and the strength is insufficient, and the problems that a space that the tooth seat occupies on the outer edge of the drum is too big so that an inner spray nozzle of the drum has no place to put on the outer edge of the drum; the wedge-type section tooth does not rotate when working, and has low energy consumption and little dust; and the cross section of wedge coal and rock solid is very small, and the coal and rock can be stripped.
Description
Technical field
The present invention relates to a kind of wedge type pick, the wedge type pick structure of coal mining machine roller special use specifically, the blade that its wedge type pick is sharp can be wedged the coal petrography entity with minimum resistance.
Background technology
At present, domestic and international widely used pick type mainly contains two kinds, and a kind of is flat pick, because its radially installation on coal mining machine roller, so be called radial pick again.For a long time because the brazing quality of sheet carbide does not pass a test, should adopt the flat pick of sheet carbide to adopt the column shaped carbide alloy head that has ridge, and the cutting edge inclination of ridge alloy head is many less than 25 ° at home more.To change into the broken coal of extruding pattern with the flat pick that is cut into the broken coal of main pattern be the flat pick that the tapered pick of being similar to of master breaks coal mechanism for this belongs to.If the broken similar flat pick of coal mechanism has then lost the advantage with tapered pick competition.Install because tapered pick is 45 on cylinder, with the increasing of monodentate cutting depth, it is littler than advancing the speed of pressure surface, and field measurement shows that the coal-winning machine power consumption of the homemade flat pick of 23# is higher than tapered pick when monodentate cutting depth >=40mm.And present coal-winning machine power both domestic and external is increasing, and the user of flat pick is fewer and feweri for this reason, has by the trend of tapered pick replacement.Although so, centering mini power coal-winning machine, homemade flat pick still has one seat.Because under monodentate cutting depth≤40mm condition, adopt flat pick to have the advantage that energy consumption is low, dust is little.This is role because 25 ° of swords of flat pick head incline; Be that flat pick head only has partial width to be pressed into coal body; Coal bursts apart, and tapered pick does not have sharp cutting edge, on cylinder 45 install and the cut process in free to rotately constituted its intrinsic technical characterictic.Its maximum characteristics are that applicability is strong, promptly can be used under the various ature of coal conditions because do not have sharp cutting edge with the coal seam in during hard field trash bump, its tip is difficult for being damaged inefficacy; 45 is installed, and the ratio pressure surface of participating in the extruding coal petrography with the increasing of its monodentate cutting-in is advanced the speed little, and under the big for this reason cutting-in situation, energy consumption is low; Ability rotation in the course of work increases its application life.But tapered pick does not have sharp cutting edge and has constituted in the broken coal petrography process tapered and contact with coal petrography; This tapered facing then forms great compact core (being pressed into the coal of powder) earlier when coal petrography pushes; When pick continues pressurization to it, coal dust to around expansion produce tension force, when tension force during greater than the intensity of coal petrography; The fragmentation that is accompanied by coal petrography reaches by wind-force, and dust will fly upward everywhere.Dust is big, and worsening the work plane working environment is the fatal weakness of tapered pick; Although can rotation help to prolong its application life; But be accompanied by the wearing and tearing of carbide alloy; Pick head denticle is wearing and tearing promptly also, when the parent of pick head also loses the function of protection hard alloy head, by the coal petrography of cut the pick carbide head are produced counter-pressure; Then can it be peeled off, this is the principal mode that tapered pick lost efficacy.
In prior art; Once designing the head cutting edge inclination is the flat pick of 40 ° called after QJB pick; The anthracitic actual measurement of cut shows on the EDW-170 coal-winning machine of Jincheng: the flat pick that cutting edge inclination is 40 ° is compared than the flat pick of 23# of 25 ° of cutting edge inclinations; Energy consumption can reduce by 20%, and the former mean power is 120KW, and the latter is 150KW.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of coal mining machine roller special-purpose wedge type pick structure, do not rotate in this wedge type pick course of work, energy consumption is low, dust is little; The basal area of wedging coal petrography entity is very little, and coal petrography can be peeled off; Can realize being main broken coal mechanism with the shear tension.
According to technical scheme provided by the invention; The wedge type pick structure that a kind of coal mining machine roller is special-purpose; Comprise wedge type tooth hard alloy head, wedge type tooth denticle; Said wedge type tooth denticle and the soldering of wedge type tooth hard alloy head are integral, and characteristic is: the cutting edge inclination λ of wedge type pick blade is 40 °～45 ° on the said wedge type tooth denticle, and its wedge type pick wedge angle is 80 °～90 °.
Further improve as the present invention, its relative its tooth handle of part that stretches out toothholder of said wedge type pick reverses 30 ° of angles forward, and install at the 15 ° of angles that turn forward, and promptly on cylinder, is the 45 cut.
Compared with present technology the present invention has the following advantages:
The invention solves that the fusion length of toothholder on cylinder is not enough, the problem of strength deficiency, it is too big also to have solved toothholder occupation space on the cylinder outer rim, has influence on the problem that the internal spraying nozzle block of cylinder is laid on the cylinder outer rim nowhere; Do not rotate in this wedge type pick course of work, dust is little; The basal area of wedging coal petrography entity is very little, and coal petrography can be peeled off; Its wedge type pick mainly is to break coal through extrusion stretching, and it has made full use of the characteristics that relatively grow at coal bedding, joint, makes that energy consumption, dust reduce significantly in the coal mining process.
Description of drawings
Fig. 1 is a wedge type pick structural front view of the present invention.
Fig. 2 is a wedge type pick structure vertical view of the present invention.
The specific embodiment
Following the present invention will combine the embodiment in the accompanying drawing to further describe:
Shown in Figure 1, comprise wedge type tooth hard alloy head 1, wedge type tooth denticle 2.
Wedge type tooth denticle of the present invention 2 is integral with 1 soldering of wedge type tooth hard alloy head, cutting edge inclination λ=40 of wedge type pick blade ° on the said wedge type tooth denticle 2～45 °, and its wedge type pick wedge angle is 80 °～90 °.
When the present invention uses, its relative its tooth handle of denticle part that stretches out toothholder is reversed 30 ° of angles forward earlier, its toothholder only reverses 15 ° of angle assembly weldings forward at cylinder, on cylinder, becomes the 45 cut as tapered pick.This has not only solved, and the fusion length of toothholder on cylinder is not enough, the problem of strength deficiency, and also to have solved toothholder occupation space on the cylinder outer rim too big, has influence on the problem that the internal spraying nozzle block of cylinder is laid on the cylinder outer rim nowhere.
The present invention all belongs to the key element in " the novel coal mining machine roller with fluting function " with the fluting pick, and the wedge type pick mainly is installed in the end plate position of cylinder on cylinder; On the blade of cylinder, it is always arranged with the pick of slotting in pairs, immediately following installing after the fluting pick and to 5 °～10 ° angles of cylinder end plate direction inclination, is used for wedging down fluting pick and stays the coal petrography entity between kerf.
The present invention is auxiliary fluting pick on cylinder, mainly is to break coal through extrusion stretching, and it has made full use of the characteristics that relatively grow at coal bedding, joint, makes that energy consumption, dust reduce significantly in the coal mining process.The cutting load of himself is also not very big, for this is not high to wedge type tooth denticle and the requirement of wedge type tooth hard alloy head, adopts denticle material, the carbide alloy trade mark, the brazing material of general tapered pick to get final product.
For making wedge type tooth hard alloy head injury-free, the concrete technological process of being adopted is following:
Blanking → heating → base → moulding → side cut → normalizing → tempering → machine → check → previous heat treatment → sandblast → expansion carbide alloy assembly welding hole → soldering hard alloy head → isothermal hardening → lonneal → sandblast → antirust processing → warehouse-in.
Claims (3)
1. the special-purpose wedge type pick structure of a coal mining machine roller; Comprise wedge type tooth hard alloy head (1), wedge type tooth denticle (2); Said wedge type tooth denticle (2) is integral with wedge type tooth hard alloy head (1) soldering, it is characterized in that: the cutting edge inclination λ that said wedge type tooth denticle (2) is gone up wedge type pick blade is 40 °～45 °.
2. the special-purpose wedge type pick structure of a kind of coal mining machine roller as claimed in claim 1 is characterized in that:
Said wedge type pick wedge angle is 80 °～90 °.
3. the special-purpose wedge type pick structure of a kind of coal mining machine roller as claimed in claim 1 is characterized in that: its relative its tooth handle of part that stretches out toothholder of said wedge type pick reverses 30 ° of angles forward, and install at the 15 ° of angles that turn forward, and promptly on cylinder, is the 45 cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103750468A CN102400687A (en) | 2011-11-22 | 2011-11-22 | Special wedge-type section tooth structure for shearer drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103750468A CN102400687A (en) | 2011-11-22 | 2011-11-22 | Special wedge-type section tooth structure for shearer drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102400687A true CN102400687A (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103750468A Pending CN102400687A (en) | 2011-11-22 | 2011-11-22 | Special wedge-type section tooth structure for shearer drum |
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| CN (1) | CN102400687A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241872A (en) * | 2014-01-31 | 2019-09-17 | 勒罗伊·G·哈根布赫 | Toolbox with the cutting element freely rotated |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678237A (en) * | 1982-08-06 | 1987-07-07 | Huddy Diamond Crown Setting Company (Proprietary) Limited | Cutter inserts for picks |
| AU1267297A (en) * | 1996-02-29 | 1997-09-04 | Albert Daniel Dr Dawood | A coal and rock cutting pick |
| CN2470535Y (en) * | 2001-02-28 | 2002-01-09 | 张守柱 | Slotted wedge-typ pick drum of coal-cutting machine |
| DE20320161U1 (en) * | 2003-12-29 | 2004-03-04 | Dbt Gmbh | Chisel holder for a planer chisel of a coal or mining plane and planer chisel |
| CN202325511U (en) * | 2011-11-22 | 2012-07-11 | 无锡速力特机械科技有限公司 | Wedge-shaped cutting tooth structure special for coal mining machine drum |
-
2011
- 2011-11-22 CN CN2011103750468A patent/CN102400687A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678237A (en) * | 1982-08-06 | 1987-07-07 | Huddy Diamond Crown Setting Company (Proprietary) Limited | Cutter inserts for picks |
| AU1267297A (en) * | 1996-02-29 | 1997-09-04 | Albert Daniel Dr Dawood | A coal and rock cutting pick |
| CN2470535Y (en) * | 2001-02-28 | 2002-01-09 | 张守柱 | Slotted wedge-typ pick drum of coal-cutting machine |
| DE20320161U1 (en) * | 2003-12-29 | 2004-03-04 | Dbt Gmbh | Chisel holder for a planer chisel of a coal or mining plane and planer chisel |
| CN202325511U (en) * | 2011-11-22 | 2012-07-11 | 无锡速力特机械科技有限公司 | Wedge-shaped cutting tooth structure special for coal mining machine drum |
Non-Patent Citations (4)
| Title |
|---|
| 刘元书: "采煤机截齿截煤过程及其使用现状的分析", 《煤炭科学技术》, no. 11, 30 November 1980 (1980-11-30) * |
| 庞世忠: "采煤机滚筒的改革与盘式截割机构的探讨", 《煤炭科学技术》, no. 12, 31 December 1988 (1988-12-31) * |
| 张守柱: "采煤机高效QJB型扁截齿", 《煤矿机电》, no. 01, 28 February 1998 (1998-02-28) * |
| 雷玉勇等: "煤岩切割刀具几何参数的理论分析", 《煤矿机械》, no. 06, 25 June 1999 (1999-06-25) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241872A (en) * | 2014-01-31 | 2019-09-17 | 勒罗伊·G·哈根布赫 | Toolbox with the cutting element freely rotated |
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Application publication date: 20120404 |