CN202954816U - Cold-assembly low-cutting resistance durable point-attack pick - Google Patents
Cold-assembly low-cutting resistance durable point-attack pick Download PDFInfo
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- CN202954816U CN202954816U CN 201220709887 CN201220709887U CN202954816U CN 202954816 U CN202954816 U CN 202954816U CN 201220709887 CN201220709887 CN 201220709887 CN 201220709887 U CN201220709887 U CN 201220709887U CN 202954816 U CN202954816 U CN 202954816U
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- cutting resistance
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- pick body
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Abstract
The utility model relates to a cold-assembly low-cutting resistance durable point-attack pick, aiming at solving the problems of low cutting efficiency, high power loss of a coal mining machine and early falling of an alloy head in the prior art. The technical scheme is as follows: the cold-assembly low-cutting resistance durable point-attack pick comprises a pick body and an alloy head, wherein an inner hole is formed in the center of the top of an upper conical part of the pick body, and the inner hole wall is provided with inner screw threads; the alloy head is composed of an umbrella-shaped part above and a cylindrical body below; the cylindrical body is less than the umbrella-shaped part of a connecting surface in diameter; the cylindrical body is provided with outer screw threads; and the alloy head is spined and fixed with the inner hole at the top of the upper conical part of the pick body through the cylindrical body. The cold-assembly low-cutting resistance durable point-attack pick disclosed by the utility model is simple in structure and good in use effect, and not only can reduce coal cutting resistance of the pick but also can effectively avoid breakup and falling of the alloy head, thus being an innovation on the point-attack pick.
Description
Technical field
The utility model relates to field of machining, particularly the low cutting resistance wearproof point attack bit of a kind of cold setting.
Background technology
Pick-shaped cutter used on the extractive equipment of current colliery, major part is to be made by techniques such as soldering and heat treatments by the machined pick body of making of structural alloy steel and hard-metal insert head, the length in its life-span is except depending on quality, brazing quality and the Technology for Heating Processing by the material of pick body, carbide alloy, and also with the shape of pick and alloy head and pick sports association, to connect mode relevant.At present, commercially available pick carbide head and the connection form of cutting body be mostly by alloy head and for the pick body copper alloy scolder high temperature (920～950 ℃) soldering form.This connection form has following shortcoming: 1, the joint portion of alloy head and pick body presents a step, when pick coal cutting operation, this boss can increase suddenly cutting resistance, this resistance will cause two kinds of bad results: (1) reduces cutting efficiency, increase the coal-winning machine power attenuation, and cause the vibration of cylinder rocking arm; (2) the boss place is because of the power serious wear that is hit, thereby causes alloy head to come off too early.2, the defect that soldering-heat treatment process is brought: the flow process of current this technique is, pick body, copper alloy scolder, scaling powder are heated to 920～950 ℃ together with hard alloy head and complete soldering, then complete subsequent heat treatment by following three kinds of modes: (1) only heats a section of pick body encirclement alloy head, be cooled to then about 860 ℃ quenchings in batches of room temperature after soldering, 500 ℃ of left and right high temperings; (2) the whole heating of pick during soldering, then utilize soldering waste heat (approximately 860 ℃) to be quenched, and then rear high temperature (500 ℃ of left and right) tempering; (3) whole heating when soldering, then carry out salt bath austempering and complete whole pick procedure.Above three kinds of treated forms are current general processing methods both at home and abroad.Above-mentioned processing method all exists the process of carbide alloy reheat and anxious heat, chilling, this process very easily causes carbide alloy to produce micro-crack, the invisible micro-crack of this naked eyes will affect the initial quality of alloy head, cause alloy head easily burst apart or be worn too early when the cut coal seam, thereby affect the total quality of pick, reduced the bulk life time of pick.Person skilled is constantly sought better solution on brazing material and technique and whole heat treatment process, but effect is all not obvious, and does not solve the problem because of alloy and the increase of pick body binding site step resistance at present.Therefore, the improvement of pick-shaped cutter is the problem of needing at present solution badly.
Summary of the invention
For above-mentioned situation, for solving the defect of prior art, the purpose of the utility model just is to provide the low cutting resistance wearproof point attack bit of a kind of cold setting, can effectively solve the prior art cutting efficiency low, and the coal-winning machine power attenuation is large, the problem that alloy head comes off too early.
The technical scheme that the utility model solves is, comprise pick body and alloy head, pick body upper cone part top center has endoporus, internal thread is arranged on inner hole wall, alloy head consists of the umbrella shape part on top and the cylinder of bottom, the diameter of cylinder is less than the diameter of joint face umbrella shape part, and external screw thread is arranged on cylinder, and alloy head is fixed together by cylinder and pick body upper cone part top endoporus spinning.
The utility model is simple in structure, result of use good, and can reduce pick coal cutting resistance and can effectively prevent that again alloy head from bursting apart and coming off, be the innovation on pick-shaped cutter.
The accompanying drawing explanation
Fig. 1 is structural front view of the present utility model.
Fig. 2 is pick body structure front view of the present utility model.
Fig. 3 is alloy head structural front view of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.
By Fig. 1-3, provided, the utility model comprises pick body 1 and alloy head 5, pick body 1 upper cone part top center has endoporus 3, on endoporus 3 walls, internal thread 4 is arranged, alloy head 5 consists of the umbrella shape part on top and the cylinder 6 of bottom, the diameter of cylinder 6 is less than the diameter of joint face umbrella shape part, and external screw thread 7 is arranged on cylinder 6, and alloy head 5 is fixed together by cylinder 6 and pick body 1 upper cone part top endoporus 3 spinnings.
In order to guarantee result of use, described pick body 1 upper cone operative tip has the air discharge duct 8 that at least one and endoporus 3 communicate.
Described alloy head 5 is umbrella shape, and umbrella limit diameter equals pick body 1 upper cone top end diameter; The cone angle of alloy head 5 is equal to or greater than the cone angle of pick body 1 upper cone part.
On described pick body 1 upper cone part periphery wall, the wear-resisting cladding layer 2 of no-spark is arranged.
The wear-resisting cladding layer 2 of described no-spark is spirality or endless belt shape.
Described internal thread 4 and external screw thread 7 are divided into the left-handed and dextrorotation together with engaged according to the direction of rotation of coal mining machine roller.
Manufacturing process of the present utility model is, appearance and size according to the pick body, the appearance and size of design alloy head, and processing columnar part outer surface thread, to on the pick body of accurate cold forging, utilize the wear-resisting cladding layer of plasma melting coating technique no-spark in tapering, then modified heat treatment in batches, bore an endoporus at pick body cone top, and machining internal thread, the diameter of internal thread, pitch is consistent with alloy head cylinder external screw thread, open the air discharge duct more than 1 or 1 at the top of pick body, then remove the internal thread of pick body and the greasy dirt on the alloy head external screw thread, smear appropriate metal adhesive respectively on the external screw thread of the internal thread of pick body and alloy head, alloy head is screwed in the pick body, unnecessary cementing agent is discharged from air discharge duct, place 24 hours, to be bonded dose solidify fully after, pick is carried out to Shot Blasting, antirust processing, load onto jump ring and complete whole production process.
The characteristics of the utility model pick are: eliminated the step of alloy head and pick body junction, reduced Cutting Drag; The umbrella shape alloy head has screened the upper tapering of pick body, has avoided causing because denticle is worn out the alloy head peeling phenomenon; Alloy head and pick body connect by screw thread cold charge technique, because alloy head does not have reheat, avoided the generation of alloy head micro-crack, kept the original performance of carbide alloy, extended the application life of pick, the adhesion between alloy head and pick body is the combination of the firm power of spiral and adhesion stress.In addition, by the cold setting technology generations, for soldering processes, greatly reduce power consumption, reduced cost of production, improved the production efficiency of pick.
The utility model is simple in structure, easy to operate, and result of use is good, can heat-treat in batches, and the coal cutting resistance is little, long service life, and production efficiency is high, can reduce cutting resistance and can effectively prevent that again the tooth head from bursting apart, coming off, and has good economic and social benefit.
Claims (6)
1. the cutting resistance wearproof point attack bit is hanged down in a cold setting, comprise pick body (1) and alloy head (5), it is characterized in that, pick body (1) upper cone part top center has endoporus (3), on endoporus (3) wall, internal thread (4) is arranged, alloy head (5) consists of the umbrella shape part on top and the cylinder (6) of bottom, the diameter of cylinder (6) is less than the diameter of joint face umbrella shape part, external screw thread (7) is arranged on cylinder (6), and alloy head (5) is fixed together by cylinder (6) and pick body (1) upper cone part top endoporus (3) spinning.
2. the low cutting resistance wearproof point attack bit of cold setting according to claim 1, is characterized in that, described pick body (1) upper cone operative tip has the air discharge duct (8) that at least one and endoporus (3) communicate.
3. the low cutting resistance wearproof point attack bit of cold setting according to claim 1, is characterized in that, described alloy head (5) is umbrella shape, and umbrella limit diameter equals pick body (1) upper cone top end diameter; The cone angle of alloy head (5) is equal to or greater than the cone angle of pick body (1) upper cone part.
4. the low cutting resistance wearproof point attack bit of cold setting according to claim 1, is characterized in that, on described pick body (1) upper cone part periphery wall, the wear-resisting cladding layer of no-spark (2) is arranged.
5. the low cutting resistance wearproof point attack bit of cold setting according to claim 4, is characterized in that, the wear-resisting cladding layer of described no-spark (2) is spirality or endless belt shape.
6. the low cutting resistance wearproof point attack bit of cold setting according to claim 1, is characterized in that, described internal thread (4) and external screw thread (7) are divided into engaged left-handed and dextrorotation together according to the direction of rotation of coal mining machine roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709887 CN202954816U (en) | 2012-12-20 | 2012-12-20 | Cold-assembly low-cutting resistance durable point-attack pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709887 CN202954816U (en) | 2012-12-20 | 2012-12-20 | Cold-assembly low-cutting resistance durable point-attack pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954816U true CN202954816U (en) | 2013-05-29 |
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ID=48460393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220709887 Expired - Fee Related CN202954816U (en) | 2012-12-20 | 2012-12-20 | Cold-assembly low-cutting resistance durable point-attack pick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954816U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429564A (en) * | 2015-01-26 | 2017-12-01 | 必泰克有限两合公司 | Chisel, especially round bar chisel |
| CN109025988A (en) * | 2018-08-28 | 2018-12-18 | 辽宁工程技术大学 | A kind of novel dismountable continuous miner roller |
| CN111577077A (en) * | 2020-05-11 | 2020-08-25 | 苏州淳熙人防设备有限公司 | Processing method of high-strength alloy for civil air defense door |
| CN114575871A (en) * | 2022-05-05 | 2022-06-03 | 三一重型装备有限公司 | Cutting head and engineering equipment |
-
2012
- 2012-12-20 CN CN 201220709887 patent/CN202954816U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429564A (en) * | 2015-01-26 | 2017-12-01 | 必泰克有限两合公司 | Chisel, especially round bar chisel |
| CN107429564B (en) * | 2015-01-26 | 2019-03-22 | 必泰克有限两合公司 | Chisel, especially round shank chisels |
| CN109025988A (en) * | 2018-08-28 | 2018-12-18 | 辽宁工程技术大学 | A kind of novel dismountable continuous miner roller |
| CN111577077A (en) * | 2020-05-11 | 2020-08-25 | 苏州淳熙人防设备有限公司 | Processing method of high-strength alloy for civil air defense door |
| CN114575871A (en) * | 2022-05-05 | 2022-06-03 | 三一重型装备有限公司 | Cutting head and engineering equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20161220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |