CN216381375U - Composite cutting pick for coal mining machine - Google Patents
Composite cutting pick for coal mining machine Download PDFInfo
- Publication number
- CN216381375U CN216381375U CN202123226183.3U CN202123226183U CN216381375U CN 216381375 U CN216381375 U CN 216381375U CN 202123226183 U CN202123226183 U CN 202123226183U CN 216381375 U CN216381375 U CN 216381375U
- Authority
- CN
- China
- Prior art keywords
- hard
- heat dissipation
- cutting pick
- groove
- cutting tooth
- 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
Links
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000005065 mining Methods 0.000 title claims description 9
- 230000017525 heat dissipation Effects 0.000 claims abstract description 48
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000036346 tooth eruption Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to the technical field of cutting teeth, and provides a composite cutting tooth for a coal cutter, which comprises a hard alloy head, a hard cutting tooth body and a cutting tooth handle, wherein a groove connected with a bus of the hard alloy head is formed in the edge of the top of the hard cutting tooth body, a tower-shaped stepped groove is formed in the side surface, close to the hard alloy head, of the hard cutting tooth body, the tower-shaped stepped groove at least comprises three build-up welding ring bodies with diameters gradually increased from top to bottom, a plurality of uniformly distributed guide grooves are formed in the side surface, close to the cutting tooth handle, of the hard cutting tooth body, a heat dissipation groove perpendicular to the guide grooves is formed in the groove surface, facing the center of the hard cutting tooth body, of the guide grooves, a countersunk head heat conduction piece is arranged in the heat dissipation groove, a plurality of heat dissipation holes penetrating through the top surface of the hard cutting tooth body to the heat dissipation groove are formed in the hard cutting tooth body, and the top of the hard alloy head is in contact with the bottom surface of the hard alloy head. The utility model has the advantages of reasonable design, simple structure, higher wear resistance and better heat dissipation, is favorable for improving the excavation efficiency and is suitable for large-scale popularization.
Description
Technical Field
The utility model belongs to the technical field of cutting teeth, and particularly relates to a composite cutting tooth for a coal cutter.
Background
The cutting picks are divided into cutting picks of a coal mining machine and cutting picks of a heading machine, are parts on the mining heading machine, are main wear consumable parts of the coal mining machine and the heading machine, have large consumption, and particularly when faults or waste rocks are clamped more, the consumption can be increased greatly. The cutting pick is driven to cut in the coal seam in an impact rotation mode, high-pressure stress and shearing bending stress are required to be simultaneously borne, the impact load is periodic and alternating, the cutting pick and the coal seam are subjected to severe friction in the excavation process to generate friction heat, and various mechanical behaviors such as local yielding, contact fatigue, corrosion and fracture are possibly accompanied in the whole abrasion process. The working surface of the cutting pick is in direct contact with hard materials such as rocks, ores and the like, and is preferably made of wear-resistant materials. The cutting pick made of multiple materials can improve the comprehensive performance of the cutting pick.
Currently, a typical cutting pick includes a cutting pick head, a cutting pick body, and a cutting pick shank. For the compound wear-resisting part, usually build up welding a round wearing layer on the pick body, but to the improvement effect of pick body wearability less, a lot of frictional heat can not effectively transmit away under the high-speed rotatory condition of pick itself moreover, leads to the actual life of whole pick still comparatively short.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems of the cutting pick, the utility model provides the composite cutting pick for the coal mining machine, which has the advantages of reasonable design, simple structure, higher wear resistance, better heat dissipation and contribution to improving the excavation efficiency.
In order to achieve the above object, the utility model adopts a technical scheme that the composite cutting pick for the coal cutter comprises a hard alloy head, the hard alloy head is arranged at the head of a hard cutting pick body, the hard cutting pick body is arranged at the head of a cutting pick handle, a groove connected with a bus of the hard alloy head is arranged at the edge of the top of the hard cutting pick body, a tower-shaped stepped groove is arranged on the side surface of the hard cutting pick body close to the hard alloy head, the tower-shaped stepped groove at least comprises three build-up welding ring bodies with diameters gradually increased from top to bottom, a plurality of uniformly distributed guide grooves are arranged on the side surface of the hard cutting pick body close to the cutting pick handle, the guide grooves are triangular prisms, the groove tops and the groove bottoms of the guide grooves are inclined surfaces, and a heat dissipation groove vertical to the guide grooves is arranged on the groove surface of the guide grooves facing to the center of the hard cutting pick body, the heat dissipation structure is characterized in that a countersunk head heat conduction piece is arranged in the heat dissipation groove, a plurality of heat dissipation holes penetrating through the heat dissipation groove from the top surface of the heat dissipation groove are formed in the hard pick body, the aperture of each heat dissipation hole is smaller than the aperture of the heat dissipation groove, and the top of each heat dissipation hole is in contact with the bottom surface of the hard alloy head.
Preferably, the countersunk head heat-conducting member comprises a countersunk head part matched with the end part of the heat dissipation groove, a tubular part is arranged at one end of the countersunk head part facing the inside of the heat dissipation groove, and two symmetrically distributed assembly holes are formed in the inner wall of the countersunk head part.
Preferably, a transition support surface is arranged at the connecting root part of the hard cutting pick body and the cutting pick handle, the transition support surface is an inverted conical surface, and the cone angle is 45 degrees.
Compared with the prior art, the utility model has the advantages and positive effects that:
1. according to the composite cutting tooth for the coal mining machine, the design of the tower-shaped stepped groove and the plurality of surfacing ring bodies is beneficial to improving the anti-stripping capability of the hard cutting tooth body, and the wear resistance of the whole cutting tooth is remarkably improved; the heat dissipation performance of the cutting tooth can be effectively improved by arranging the flow guide grooves, the heat dissipation holes and the countersunk head heat conduction pieces, and the service life and the rotary cutting performance of the cutting tooth are favorably improved. The utility model has the advantages of reasonable design, simple structure, higher wear resistance and better heat dissipation, is favorable for improving the excavation efficiency and is suitable for large-scale popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a front view of a composite cutting pick for a coal cutter provided by an embodiment;
FIG. 2 is a sectional view of the composite cutting pick for the coal cutter in the direction of D-D according to the embodiment;
FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 according to an exemplary embodiment;
in the above figures, 1, a cemented carbide body; 2. a hard pick body; 21. beveling; 22. a tower-shaped stepped trough; 23. surfacing a ring body; 24. a diversion trench; 25. a heat sink; 26. heat dissipation holes; 3. a pick shank; 4. a countersunk heat-conducting member; 41. a countersunk head part; 42. a tubular portion; 43. an assembly hole; 5. a transitional support surface.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
In an embodiment, as shown in fig. 1, fig. 2 and fig. 3, the composite cutting pick for a coal mining machine provided by the utility model comprises a hard alloy head 1, wherein the hard alloy head 1 is arranged at a head of a hard cutting pick body 2, and the hard cutting pick body 2 is arranged at a head of a cutting pick handle 3, wherein the hard alloy head 1 and the cutting pick handle 3 are prior art, and the description of the embodiment is omitted here. The focus of the present invention is the improvement proposed to the hard pick body 2.
Specifically, the utility model is provided with a groove 21 connected with a bus of the hard alloy head 1 at the top edge of the hard pick body 2, the hard pick body 2 is provided with a tower-shaped stepped groove 22 on the side surface close to the hard alloy head 1, the tower-shaped stepped groove 22 at least comprises three bead welding ring bodies 23 with diameters gradually increasing from top to bottom, the hard pick body 2 is provided with a plurality of uniformly distributed diversion grooves 24 on the side surface close to the pick handle 3, the diversion grooves 24 are triangular prisms, the groove tops and the groove bottoms of the diversion grooves are inclined surfaces, the diversion grooves 24 are provided with a heat dissipation groove 25 perpendicular to the diversion grooves on the groove surface facing the center of the hard pick body 2, a countersunk heat conduction piece 4 is arranged in the heat dissipation groove 25, the hard heat dissipation hole pick body 2 is internally provided with a plurality of heat dissipation grooves 26 penetrating from the top surface to the heat dissipation groove 25, the aperture of the heat dissipation groove 26 is smaller than the aperture of the heat dissipation groove 25, and the top of the heat dissipation hole 26 is contacted with the bottom surface of the hard alloy head 1. The design of the groove 21 can improve the outer contour connection performance of the hard pick body 2 and the hard alloy head 1, and is beneficial to reducing the damage condition of the end part of the hard pick body 2. By adopting the tower-shaped stepped groove 22 and the plurality of surfacing ring bodies 23, the covering area and the extending span of a surfacing structure can be increased, and on the other hand, the impact from a rock stratum and stripped rock debris can be borne from multiple angles and multiple stages, so that the anti-stripping capability of the hard pick body 2 is improved, and the wear resistance of the whole pick is remarkably improved. The diversion trench 24 on the hard pick body 2 can play a role in chip removal on one hand, reduces multiple abrasion of rock debris to the pick, and on the other hand can effectively improve the heat dissipation performance of the pick together with the heat dissipation groove 25, the heat dissipation hole 26 and the countersunk head heat-conducting piece 4, thereby being beneficial to improving the service life and the rotary cutting performance of the pick. Wherein, louvre 26 can directly be with the heat of hard alloy head 1 to the transmission of radiating groove 25 direction, and countersunk head heat-conducting piece 4 has adopted easy heat conduction material moreover to improve the efficiency that the heat spreads, reduced the heat and reciprocal transmission between pick and detritus, thereby improved the heat dispersion of this device. The inclined design of the diversion trench 24 can also play a role in resisting scraps on the heat dissipation trench 25 or the countersunk head heat-conducting piece 4, so that the situation that the heat dissipation trench 25 or the countersunk head heat-conducting piece 4 is blocked prematurely is avoided.
In order to improve the practicability of the countersunk head heat-conducting member 4, the countersunk head heat-conducting member 4 provided by the utility model comprises a countersunk head part 41 matched with the end part of the heat dissipation groove 25, one end of the countersunk head part 41 facing the inside of the heat dissipation groove 25 is provided with a tubular part 42, and the inner wall of the countersunk head part 41 is provided with two symmetrically distributed assembly holes 43. The tubular part 42 can be tightly matched with the heat dissipation groove 25, and the end part of the heat dissipation groove 25, which is matched with the countersunk part 41 in a countersunk way, can form protection for the heat dissipation groove, so that the heat dissipation groove is beneficial to ensuring that the heat dissipation groove has a longer actual service life. The assembly holes 43 in the interior of the countersunk head heat-conducting member 4 facilitate the insertion of corresponding tools by workers to remove and replace the countersunk head heat-conducting member 4.
In order to prolong the service life of the cutting pick, the connecting root part of the hard cutting pick body 2 and the cutting pick handle 3 is provided with a transition support surface 5, the transition support surface 5 is an inverted conical surface, and the cone angle is 45 degrees. The design of the transition supporting surface 5 can improve the structural strength of the root of the hard pick body 2, reduce the stress concentration effect and reduce the probability of the crushing problem of the root.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (3)
1. A composite cutting pick for a coal cutter comprises a hard alloy head, wherein the hard alloy head is arranged at the head of a hard cutting pick body, the hard cutting pick body is arranged at the head of a cutting pick handle, and the composite cutting pick is characterized in that a groove connected with a bus of the hard alloy head is arranged at the top edge of the hard cutting pick body, a tower-shaped stepped groove is arranged on the side surface of the hard cutting pick body close to the hard alloy head, the tower-shaped stepped groove at least comprises three build-up welding ring bodies with diameters gradually increased from top to bottom, a plurality of uniformly distributed guide grooves are arranged on the side surface of the hard cutting pick body close to the cutting pick handle, the guide grooves are triangular prism bodies, the tops and bottoms of the guide grooves are inclined planes, heat dissipation holes of the guide grooves facing the center of the hard cutting pick body are provided with heat dissipation grooves vertical to the guide grooves, heat conducting pieces of a countersunk heads are arranged in the heat dissipation grooves, a plurality of hard cutting picks are arranged in the hard cutting pick body, and run through from the top surface to the heat dissipation grooves, the aperture of the heat dissipation hole is smaller than the aperture of the heat dissipation groove, and the top of the heat dissipation hole is in contact with the bottom surface of the hard alloy head.
2. A composite cutting pick for a coal cutter according to claim 1, wherein the countersunk head heat-conducting member includes a countersunk portion engaged with an end portion of the heat dissipating groove, a tubular portion is provided at an end of the countersunk portion facing the inside of the heat dissipating groove, and two symmetrically distributed assembly holes are provided in an inner wall of the countersunk portion.
3. The composite cutting pick for the coal mining machine as claimed in claim 2, wherein a transition support surface is arranged at the root of the connection of the hard cutting pick body and the cutting pick handle, the transition support surface is an inverted conical surface, and the cone angle is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226183.3U CN216381375U (en) | 2021-12-21 | 2021-12-21 | Composite cutting pick for coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226183.3U CN216381375U (en) | 2021-12-21 | 2021-12-21 | Composite cutting pick for coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216381375U true CN216381375U (en) | 2022-04-26 |
Family
ID=81236103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123226183.3U Expired - Fee Related CN216381375U (en) | 2021-12-21 | 2021-12-21 | Composite cutting pick for coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216381375U (en) |
-
2021
- 2021-12-21 CN CN202123226183.3U patent/CN216381375U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210460512U (en) | Drill bit and drill bit teeth thereof | |
| WO2012075672A1 (en) | High efficiency cutting tooth | |
| CN216381375U (en) | Composite cutting pick for coal mining machine | |
| CN102086757A (en) | Composite cutting drill | |
| CN211573417U (en) | Drill tool chisel easy to remove slag | |
| CN214576998U (en) | Rotary cutting pick for coal cutter | |
| CN216517987U (en) | Rotary assembly type cutting tooth | |
| CN211174103U (en) | Mining cutting pick | |
| CN210395061U (en) | Road engineering cutter | |
| CN107587876A (en) | A kind of mining pick | |
| CN206801561U (en) | A kind of mining pick | |
| CN204984415U (en) | Wear -resistingly prevent grinding partially pick | |
| CN206983008U (en) | A kind of novel diamond thin-wall drill bit | |
| CN207750082U (en) | Mining bucket tooth | |
| CN214787366U (en) | Mining novel cutting pick with ion coating | |
| CN216553909U (en) | Wear-resistant hard rock alloy cutting pick | |
| CN221590981U (en) | Alloy tooth combined cutting pick | |
| CN216517821U (en) | Novel diamond composite anchor rod drill bit | |
| CN212454422U (en) | Shield constructs machine scraper protection device | |
| CN212250026U (en) | Mining cutting pick | |
| CN216043703U (en) | Wear-resistant cutting pick with automatic chip removal function | |
| CN217997757U (en) | Conical hard alloy tool bit | |
| CN204108340U (en) | A kind of multicoat turning insert | |
| CN212250027U (en) | Rotary digging pick and pick holder structure | |
| CN214944236U (en) | Embedded sharp pick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |