CN102383791A - Shearer roller with slotting function - Google Patents
Shearer roller with slotting function Download PDFInfo
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- CN102383791A CN102383791A CN2011103621185A CN201110362118A CN102383791A CN 102383791 A CN102383791 A CN 102383791A CN 2011103621185 A CN2011103621185 A CN 2011103621185A CN 201110362118 A CN201110362118 A CN 201110362118A CN 102383791 A CN102383791 A CN 102383791A
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- toothholder
- fluting
- coal
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Abstract
The invention discloses a shearer roller with a slotting function and belongs to the technical field of mining machinery. The shearer roller with the slotting function comprises a roller body, and an end plate and a main blade which are welded on the roller body; the end plate and the main blade are provided with toothholders arranged at a 15-degree front rake, and cutting teeth arranged on the toothholders; and the cutting teeth comprise slotting cutting teeth and wedge-shaped cutting teeth, which arranged on the toothholder of the main blade in pairs, and wedge-shaped cutting teeth arranged on the toothholder of the end plate. The conventional roller is further deepened and improved; and technical problems that hard alloy sheets of the slotting cutting teeth are fallen and lost, welded seams of the toothholders have low strength and the like are solved, a coal cutting mechanism is radically changed, energy consumption and working face dust caused by stretching fractured coal can be greatly reduced, the lump coal rate is improved, the working environment of coal miners is improved, occupational diseases of the coal miners are reduced, serious coal-dust explosion accidents are greatly reduced, the working life of the miners is prolonged, and the work efficiency of coal mining is improved.
Description
Technical field
What the present invention relates to is a kind of device of mining machinery technical field, specifically is a kind of coal mining machine roller with fluting function.
Background technology
Coal mining machine roller is all classified with the pick pattern that adopts both at home and abroad at present.The pick that extensively adopts both at home and abroad now mainly contains two kinds promptly: flat pick and tapered pick, and cylinder also mainly contains two kinds of patterns for this reason: 1. flat pick cylinder, pick are radially installed on cylinder; 2. tapered pick cylinder, the pick axis be 43 ° of-48 ° of angles through the drum shaft cross section, be called as the tangential and install, pick can rotation in the course of the work.
The selection of roller frame pattern still should be confirmed according to the geological condition of ature of coal condition and ore bed except according to the customer requirements.But no matter adopt which kind of cylinder pattern, with regard to cylinder design, mainly around following technical indicator: 1. preferable stable working property, the live load coefficient of variation is little; 2. specific energy consumption is low; 3. efficiency of loading is high; 4. lump coal goes out the rate height; 5. long service life.Preceding 4 belong to the designing quality problem, and the 5th belongs to the material technology problem.
Existing Chinese patent document number CN2273771, open day 1998-02-04 has put down in writing a kind of " the non-vane drum that is uniformly distributed with of coal-winning machine ", and this technology principal character is A, B, C primary blades 3 non-being uniformly distributed with on barrel 1.Behind the A blade location, the positioned at intervals that B and A, C and B blade are 111 °～116 °, A and C blade are pressed 128 °～138 ° positioned at intervals.Be welded with the loading blade 4 at-7 °～-10 ° of angles at the face of coalingging of A, B, C primary blades 3.
Although this technology has the technical characterictic that energy consumption is low, dust is little, lump coal rate is high; Economy and society remarkable benefit and won coal science and technology progress second prize; But it does not fundamentally change coal crushing mechanism; Also satisfy not each mining area far away to further cutting down the consumption of energy and dust, improved the requirement that lump coal goes out rate.The minimizing of pick quantity does not change the size that pick breaks the compact core (crushed coal dust) that produces at its head in the coal process, has just reduced the quantity of compact core.So should technology be difficult to satisfy the dust of each mining area, the demand of the ratio of raising machine coal mining lump coal to further cutting down the consumption of energy with stope.
Chinese patent document number CN2470535; Day for announcing 2002-1-9; Put down in writing a kind of " coal-winning machine open flume type wedge type pick cylinder ", this technology is made up of cylindrical shell, end plate, blade and toothholder, and wherein: the toothholder branch radially is welded on the cylinder with the tangential; Radially on the toothholder of welding the fluting pick is installed, its pick crown radius of gyration equals the theoretical radius of cylinder; On the toothholder of tangential welding the wedge type pick is installed; The radius of gyration of the wedge type pick crown on the blade is than the little 20～30mm of theoretical radius of cylinder; The pick axis becomes 5 °～10 ° γ angle with the drum shaft cross section; The radius of gyration of the wedge type pick crown on the end plate equals the theoretical radius of cylinder, and the pick axis becomes 0 °～60 ° γ angle with the drum shaft cross section.
The theoretical foundation that above-mentioned technology proposes is that the former Soviet Union published " coal cutting principle " in 1962, and this book is that these wealthy Qin Siji mining industry two academician Bie Long of academy of the former Soviet Union and Bo Jin write.Compile the author all kinds of different atures of coal in each mining area of the former Soviet Union have been done a large amount of laboratory tests, its conclusion is: the ratio of the compressive strength of coal, shear strength, tensile strength is 1: 0.3: 0.15.Past 40 years; Nobody can design the ashamed mechanism of worker of mainly breaking the drum shearer of coal by stretching in the world; The key problem in technology of problem is that can Shearer Helical Drum leave several darker and narrow kerfs earlier at the cutting surface of its coal in the course of work of its swivel feeding; Pick immediately following its proceeds posterolateral is installed the axial force that is produced through axioversion, and the coal petrography that the pick of will slotting is stayed between the kerf of coal petrography cutting face peels off, thereby realizes the imagination of the broken coal of bend tension.
This technology is spent 10 years from authorizing; Its patentee has carried out the substantial exploration of four-wheel for making patent be committed to the enforcement front and back; The fluting pick carbide sheet pick all tribulations such as the pick carbide sheet bursts apart of losing, slot that come off, slot have been experienced; Mainly to be this pick open in the cutting-in groove process at it is to be in sealing cut state for this, and its cutting load is bigger, moreover is that domestic brazing material does not pass a test.The implementation of domestic policies of reform and opening to the outside world over 30 years, the domestic joint tackling of key scientific and technical projects and new material research all have than much progress with application, for the present invention has created condition in each mining area extensive use.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that prior art exists, a kind of coal mining machine roller with fluting function is provided, further in-depth and perfect existing cylinder; Technical barriers such as fluting pick carbide sheet comes off, loses, toothholder weld strength deficiency have been captured; Thoroughly change coal cut mechanism, the work plane dust that broken coal caused that can cut down the consumption of energy significantly and stretch improves lump coal rate; Improve the working environment of coal miner; Reduce the coal miner occupational disease, prolong workman's working life when the coal-dust explosion serious accident is significantly reduced, improved the operating efficiency of coal mining.
The present invention realizes through following technical scheme, the present invention includes: barrel and on it end plate and primary blades of welding are provided with the toothholder of 15 ° of top rake settings on end plate and primary blades and are arranged at the pick on the toothholder.
Described pick is meant: be arranged at the fluting pick and the wedge shape pick of mounted in pairs on the toothholder of primary blades and be arranged at the wedge shape pick on the toothholder of end plate.
Described toothholder is fixedly connected with fluting pick or wedge shape pick through the β pin.
Described fluting pick is mainly used in the blade-section of cylinder, and the radius of gyration of its crown equals the theoretical radius of cylinder design, and cutting groove depth is 10～120 millimeters, and the grooving mean breadth is 25～35 millimeters; Major function is to open at the cutting surface of coal to cut out narrow and dark grooving,
Described fluting pick is provided with sharp two-stage or three grades of steps and is the dovetail shaped cutting blade structure; Wherein: the axial spacing of step is 30～40mm; The difference in height of step is 30～40mm, and the tread of described dovetail shaped cutting blade structure is 20～30mm, and the angle is 30 °～35 ° in face of the main sword.
Described wedge shape pick comprises: tooth shank portion and the tooth head part that is attached thereto; Wherein: the angle of the central axis of the tooth head part of stretching out and the central axis of tooth shank portion is 30 ° of angles, makes the central axis of tooth head part and cross section through cylinder axis be 45.
Described tooth head is divided into wedge structure, and angle is 80 °～100 ° between two lozenges.
In the described wedge shape pick:
A) the crown radius of gyration that is arranged at the tooth head part of the wedge shape pick on the toothholder of end plate equals the theoretical radius of cylinder design, and with become the γ angle perpendicular to the cylinder axis section, the γ angular region is-15 °～60 °;
B) it is little 15～30 millimeters than the theoretical radius of cylinder design to be arranged at the radius of gyration of crown of tooth head part of the wedge shape pick on the toothholder of primary blades; And tilt to the end plate direction; Its angle of slope γ value is 5 °～10 °, and major function is that wedging down fluting pick is stayed the coal petrography entity between the cutting surface kerf.The less radius of gyration is intended to give full play to the function of fluting tooth.
Technique effect of the present invention comprises:
1) toothholder of pick setting is used little fillet instead by the big fillet of original bottom; Making fixedly, the β pin of pick no longer is exposed to outside the toothholder outside; And the pick of will slotting is radially installed and is changed the 15 ° of installations that turn forward into; The shank of the relative tooth of tooth head part that the pick of promptly will slotting earlier exposes rotate backward 15 ° for this reason the inner hole centreline of toothholder become 15 ° of assembly weldings with the drum shaft section, 15 ° the toothholder hole of tilting can produce a radial system power to pick tooth handle.
2) change original shape into unstressed concentrated shape very simple alloy sheet (referring to Fig. 4 b Fig. 4 c) than hard metal tip complicated and that have stress to concentrate, increased the measure of eliminating welding stress after the pick soldering hard metal tip of slotting simultaneously.
3) the wedge type pick after improving is the same with the fluting pick, and 15 ° of assembly weldings of its toothholder endoporus axial line and the inclination of cylinder axis section have solved toothholder weld strength deficiency and occupy the too big problem in space on the cylinder outer rim.
4) according to the cutting figure of cylinder; The fluting pick and the crown radius of gyration of wedge type pick on different transversals have suitably been adjusted; Make the cutting basal area of the pick on each transversal more reasonable, the alloy that has comprehensively overcome the problem of losing, the fluting pick of the fluting pick that prior art the exists problem of bursting apart.
Description of drawings
Fig. 1 is a sectional view of the present invention;
Fig. 2 a is a cylinder expanded view left half of the present invention;
Fig. 2 b is a cylinder expanded view right half of the present invention;
Fig. 3 is axis projection figure of the present invention;
Fig. 4 a is the present invention's pick sketch map of slotting;
Fig. 4 b is the local enlarged diagram of dovetail shaped cutting blade structure;
Fig. 4 c is dovetail shaped cutting blade structure fluting pick vertical view;
Fig. 5 is a wedge shape pick lateral view of the present invention;
Fig. 6 is the hard metal tip sketch map that original shape is complicated and have stress to concentrate;
Among the figure: the Kd on 1 barrel, 2 end plates, 3 blades, 4 toothholders, 5 fluting picks, 6 wedge shape picks, 7 β pin, the end plate in Fig. 2 a and Fig. 2 b, all the other are the wedge shape pick of different angles:
K1, K2, K3...K12 are the fluting pick on the different transversals on the blade;
X1, X2, X3...X12 are wedge shape pick on the different transversals on the blade.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment
As shown in Figure 1, present embodiment comprises: barrel 1 and welding end plate 2 and primary blades 3 on it are provided with the toothholder 4 of 15 ° of top rake settings on end plate 2 and primary blades 3 and are arranged at the pick on the toothholder 4.
As shown in Figure 2, described pick is meant: the fluting pick 5 that is arranged at mounted in pairs on the toothholder 4 of primary blades 3 and wedge shape pick 6 and be arranged at the wedge shape pick 6 on the toothholder 4 of end plate 2.
Described toothholder 4 is fixedly connected with fluting pick 5 or wedge shape pick 6 through β pin 7.
As shown in Figures 2 and 3, described fluting pick 5 is mainly used in blade 3 parts of cylinder, and the radius of gyration of its crown equals the theoretical radius of cylinder design, and cutting groove depth is 10～120 millimeters, and the grooving mean breadth is 25～35 millimeters; Major function is to open at the cutting surface of coal to cut out narrow and dark grooving,
Shown in Fig. 4 a, described fluting pick 5 is provided with sharp two-stage or three grades of steps and is dovetail shaped cutting blade structure 8, and wherein: the axial spacing l of step is 30～40mm, and the difference in height of step is 30～40mm.
Shown in Fig. 4 b and Fig. 4 c, the tread H of described dovetail shaped cutting blade structure 8 is 20～30mm, and the long D of sword is 20～30mm, and blade tip and afterbody are equipped with the fillet of R0.5～2mm, and the angle is 30 °～35 ° in face of the main sword.
As shown in Figure 5; Described wedge shape pick 6 comprises: tooth shank portion 9 and the tooth head part 10 that is attached thereto; Wherein: the angle of the central axis of the tooth head part of stretching out and the central axis of tooth shank portion is 30 ° of angles; Based on the toothholder 4 that 15 ° of top rakes are provided with, make the central axis of tooth head part and cross section be 45 through cylinder axis.
Described tooth head part 11 is a wedge structure, and angle is 80 °～100 ° between two lozenges.
In the described wedge shape pick 6:
A) the crown radius of gyration that is arranged at the tooth head part of the wedge shape pick 6 on the toothholder 4 of end plate 2 equals the theoretical radius of cylinder design, and with become the γ angle perpendicular to the cylinder axis section, the γ angular region is-15 °～60 °;
B) it is little 15～30 millimeters than the theoretical radius of cylinder design to be arranged at the radius of gyration of crown of tooth head part of the wedge shape pick 6 on the toothholder 4 of primary blades 3; And tilt to end plate 2 directions; Its angle of slope γ value is 5 °～10 °, and major function is that wedging down fluting pick 5 is stayed the coal petrography entity between the cutting surface kerf.The less radius of gyration is intended to give full play to the function of fluting tooth.
The present invention uses little fillet at the toothholder 4 of the pick setting of cylinder outer rim by the big fillet of original bottom except assembly welding, and making fixedly, the β pin 7 of pick no longer is exposed to outside toothholder 4 outsides; The pick 5 of will slotting in addition installs radially that changing into turns forward 15 ° installs, the shank of the tooth head part 12 relative teeth that the pick 5 of promptly will slotting earlier the exposes 15 ° of angles that rotate backward.The inner hole centreline of toothholder 4 becomes 15 ° of angle assembly weldings with the drum shaft section for this reason, and 15 ° the toothholder hole of tilting can produce a radial system power to pick tooth handle.
The present invention except adopt fusing point be about 600 ℃ silver, copper, zinc, cadmium solder and with supporting soldering flux; Also change original shape into unstressed concentrated shape very simple alloy sheet (referring to Fig. 4 b and Fig. 4 c) than hard metal tip (referring to Fig. 6) complicated and that have stress to concentrate, increased the measure of eliminating welding stress after the pick 5 soldering hard metal tips of slotting simultaneously.Reduce the solder fusing point, change the carbide alloy shape, eliminating welding stress after the soldering is to solve the effective technical measures that fluting pick 5 hard metal tips burst apart.
The present invention compared with prior art comprises following significant technique effect:
1. the lump coal ratio significantly increases, and particularly the best existing cylinder of 25～50 millimeters lump coal of grade is compared and can be increased more than 15～20%, has solved the broken low problem of coal lump coal rate of ubiquitous machinery in the prior art, remarkable in economical benefits;
2. the coal-face dust will significantly reduce, and can descend more than 50%, can reduce the incidence of disease of faceman's anthraco-silicosis, and reduce the generation of dust explosion serious accident, obvious social benefit;
3. help reducing the specific energy consumption that drum shearer is mined, can make energy consumption descend 20～30%;
4. the consumption of pick can reduce, and especially the wedge shape cutting-gear life on the blade is compared with traditional cone of tangents type pick, can prolong more than 2 times.
Claims (9)
1. coal mining machine roller with fluting function comprises: barrel and welding end plate and primary blades on it is characterized in that: on end plate and primary blades, be provided with the toothholder of 15 ° of top rake settings and be arranged at the pick on the toothholder;
Described pick is meant: be arranged at the fluting pick and the wedge shape pick of mounted in pairs on the toothholder of primary blades and be arranged at the wedge shape pick on the toothholder of end plate.
2. the coal mining machine roller with fluting function according to claim 1 is characterized in that, described toothholder is fixedly connected with fluting pick or wedge shape pick through the β pin.
3. the coal mining machine roller with fluting function according to claim 1 is characterized in that, the radius of gyration of the crown of described fluting pick equals the theoretical radius of cylinder design, and cutting groove depth is 10～120 millimeters, and the grooving mean breadth is 25～35 millimeters.
4. according to claim 1 or 3 described coal mining machine rollers, it is characterized in that described fluting pick is provided with sharp two-stage or three grades of steps and is the dovetail shaped cutting blade structure with fluting function.
5. the coal mining machine roller with fluting function according to claim 4 is characterized in that, the axial spacing of described step is 30～40mm, and the difference in height of step is 30～40mm.
6. the coal mining machine roller with fluting function according to claim 4; It is characterized in that the tread of described dovetail shaped cutting blade structure is 20～30mm, sword length is 20～30mm; Blade tip and afterbody are equipped with the fillet of R0.5～2mm, and the angle is 30 °～35 ° in face of the main sword.
7. the coal mining machine roller with fluting function according to claim 1; It is characterized in that; Described wedge shape pick comprises: tooth shank portion and the tooth head part that is attached thereto; Wherein: the angle of the central axis of the tooth head part of stretching out and the central axis of tooth shank portion is 30 ° of angles, makes the central axis of tooth head part and cross section through cylinder axis be 45 based on the toothholder of 15 ° of top rake settings.
8. the coal mining machine roller with fluting function according to claim 7 is characterized in that, described tooth head is divided into wedge structure, and angle is 80 °～100 ° between two lozenges.
9. according to claim 1 or 7 described coal mining machine rollers, it is characterized in that with fluting function, in the described wedge shape pick:
A) the crown radius of gyration that is arranged at the tooth head part of the wedge shape pick on the toothholder of end plate equals the theoretical radius of cylinder design, and with become the γ angle perpendicular to the cylinder axis section, the γ angular region is-15 °～60 °;
B) it is little 15～30 millimeters than the theoretical radius of cylinder design to be arranged at the radius of gyration of crown of tooth head part of the wedge shape pick on the toothholder of primary blades, and tilts to the end plate direction, and its angle of slope γ value is 5 °～10 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103621185A CN102383791A (en) | 2011-11-15 | 2011-11-15 | Shearer roller with slotting function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103621185A CN102383791A (en) | 2011-11-15 | 2011-11-15 | Shearer roller with slotting function |
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| CN102383791A true CN102383791A (en) | 2012-03-21 |
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| CN2011103621185A Pending CN102383791A (en) | 2011-11-15 | 2011-11-15 | Shearer roller with slotting function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425414A (en) * | 2011-11-22 | 2012-04-25 | 无锡速力特机械科技有限公司 | Special grooved pick structure for coal mining machine roller |
| CN103244117A (en) * | 2013-05-21 | 2013-08-14 | 天地上海采掘装备科技有限公司 | Coal mining machine rocker arm with telescopic slotting mechanism |
| CN103953339A (en) * | 2014-04-29 | 2014-07-30 | 西安科技大学 | Coal mining machine for lump coal mining and coal mining method |
| CN105064994A (en) * | 2015-07-23 | 2015-11-18 | 河南理工大学 | Onboard continuous grooving pressure relief coal mining equipment and onboard continuous grooving pressure relief coal mining method |
| CN107780930A (en) * | 2017-12-01 | 2018-03-09 | 三重型装备有限公司 | Coal mining machine roller and coal-winning machine |
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| CN2273771Y (en) * | 1996-05-31 | 1998-02-04 | 上海汉联综机技术公司 | Non-uniform blade cutting drun of coal mining machine |
| CN2470535Y (en) * | 2001-02-28 | 2002-01-09 | 张守柱 | Slotted wedge-typ pick drum of coal-cutting machine |
| EP1706585A1 (en) * | 2003-12-31 | 2006-10-04 | Kennametal, Inc. | Core breaker for an earth strata cutting assembly |
| CN1888389A (en) * | 2006-06-30 | 2007-01-03 | 永城煤电(集团)有限责任公司 | Slitting type cutting coal-mining method capable of raising lump-coal yield and special large intercept coal-cutting drum |
| EP1790817A1 (en) * | 2005-11-23 | 2007-05-30 | Keystone Engineering & Manufacturing Corporation | Flighting and tool holder |
| CN201121519Y (en) * | 2007-11-30 | 2008-09-24 | 姜云龙 | Five-head blade tumbling cylinder of coal mining machine |
| US20090091177A1 (en) * | 2007-10-03 | 2009-04-09 | Hydra Mining Tools International Limited | Mineral cutter system |
| US20100244545A1 (en) * | 2006-06-16 | 2010-09-30 | Hall David R | Shearing Cutter on a Degradation Drum |
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2011
- 2011-11-15 CN CN2011103621185A patent/CN102383791A/en active Pending
Patent Citations (8)
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| CN2273771Y (en) * | 1996-05-31 | 1998-02-04 | 上海汉联综机技术公司 | Non-uniform blade cutting drun of coal mining machine |
| CN2470535Y (en) * | 2001-02-28 | 2002-01-09 | 张守柱 | Slotted wedge-typ pick drum of coal-cutting machine |
| EP1706585A1 (en) * | 2003-12-31 | 2006-10-04 | Kennametal, Inc. | Core breaker for an earth strata cutting assembly |
| EP1790817A1 (en) * | 2005-11-23 | 2007-05-30 | Keystone Engineering & Manufacturing Corporation | Flighting and tool holder |
| US20100244545A1 (en) * | 2006-06-16 | 2010-09-30 | Hall David R | Shearing Cutter on a Degradation Drum |
| CN1888389A (en) * | 2006-06-30 | 2007-01-03 | 永城煤电(集团)有限责任公司 | Slitting type cutting coal-mining method capable of raising lump-coal yield and special large intercept coal-cutting drum |
| US20090091177A1 (en) * | 2007-10-03 | 2009-04-09 | Hydra Mining Tools International Limited | Mineral cutter system |
| CN201121519Y (en) * | 2007-11-30 | 2008-09-24 | 姜云龙 | Five-head blade tumbling cylinder of coal mining machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425414A (en) * | 2011-11-22 | 2012-04-25 | 无锡速力特机械科技有限公司 | Special grooved pick structure for coal mining machine roller |
| CN103244117A (en) * | 2013-05-21 | 2013-08-14 | 天地上海采掘装备科技有限公司 | Coal mining machine rocker arm with telescopic slotting mechanism |
| CN103244117B (en) * | 2013-05-21 | 2015-05-13 | 天地上海采掘装备科技有限公司 | Coal mining machine rocker arm with telescopic slotting mechanism |
| CN103953339A (en) * | 2014-04-29 | 2014-07-30 | 西安科技大学 | Coal mining machine for lump coal mining and coal mining method |
| CN103953339B (en) * | 2014-04-29 | 2016-03-23 | 西安科技大学 | A kind of lump coal exploitation coal-winning machine and seam mining method |
| CN105064994A (en) * | 2015-07-23 | 2015-11-18 | 河南理工大学 | Onboard continuous grooving pressure relief coal mining equipment and onboard continuous grooving pressure relief coal mining method |
| CN107780930A (en) * | 2017-12-01 | 2018-03-09 | 三重型装备有限公司 | Coal mining machine roller and coal-winning machine |
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Application publication date: 20120321 |