CN202194661U - Polycrystalline diamond enhanced type cutting pick - Google Patents
Polycrystalline diamond enhanced type cutting pick Download PDFInfo
- Publication number
- CN202194661U CN202194661U CN2011203186860U CN201120318686U CN202194661U CN 202194661 U CN202194661 U CN 202194661U CN 2011203186860 U CN2011203186860 U CN 2011203186860U CN 201120318686 U CN201120318686 U CN 201120318686U CN 202194661 U CN202194661 U CN 202194661U
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- China
- Prior art keywords
- pick
- polycrystalline diamond
- diamond
- matrix
- toothholder
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Abstract
The utility model provides a polycrystalline diamond enhanced type cutting pick, which comprises a pick seat, an anti-rotating cylindrical pin, a cutting pick base body and a polycrystalline diamond composite piece, wherein the cutting pick base body is arranged on the pick seat, the anti-rotating cylindrical pin is connected with the pick seat and the cutting pick base body, and the polycrystalline diamond composite piece is welded to the cutting pick base body. The high abrasion resistance of the polycrystalline diamond composite piece is applied to the cutting pick of a development machine, improves development efficiency, improves service life of a cutting head, reduces cost, further reduces construction cost, and shortens time limit for a project.
Description
Technical field:
The utility model relates to coal mine roadway road heading machinery and comprehensive mining machinery, is specifically related to a kind of polycrystalline diamond enhancement mode pick.
Background technology:
In the prior art; Road heading machinery and comprehensive mining machinery (comprehensive mining machinery) are widely used in various collieries; Cutterhead is the critical piece of road heading machinery and comprehensive mining machinery, and pick is fixed on the cutterhead through toothholder, and pick adopts carbide alloy crown (being referred to as the carbide alloy pick) usually.In practical work process, cutterhead passes through the pick cutting rock with the mode of impacting, and is main stressed member.When running into the total rock layer of high rigidity, receive bigger shock loading and friction, the carbide alloy pick wearing and tearing on it are very fast, had a strong impact on the operating efficiency of road heading machinery and comprehensive mining machinery.The failure mode of conventional general pick mainly contains two kinds: the one, and along with the wearing and tearing of carbide alloy crown, the pick rust is difficult to rock is formed effective cutting, and the pick wearing and tearing on whole cutterhead acquire a certain degree, and drivage efficiency will significantly descend; The 2nd, because the pick matrix is installed on the toothholder, toothholder does not have radial constraint to the pick matrix, and the pick matrix can rotate around the toothholder center; Pick matrix abrasion resistance is low; Wear and tear prior to carbide alloy pick point around the pick matrix in the work, when heavy wear, the pick matrix has lost the support protective effect to crown; Come off with regard to integral body thereby crown is not is not also worn and torn fully, pick lost efficacy.Though pick is as the running stores of mining, rapid wear also causes the waste of resource, so is badly in need of intensity and the good pick of abrasion resistance on the market.
The utility model content:
In sum, in order to overcome the deficiency of prior art problem, the utility model provides a kind of polycrystalline diamond enhancement mode pick; Prolong the service time of pick, accelerated drivage efficiency, improved the application life of pick; Reduce cost, shortened the driving duration.
The utility model adopts following technical scheme:
A kind of polycrystalline diamond enhancement mode pick; Wherein, comprise toothholder, anti-rotation straight pin, pick matrix, composite polycrystal-diamond, the pick matrix is arranged on the toothholder; The anti-rotation straight pin connects toothholder and pick matrix, and composite polycrystal-diamond is welded on the pick matrix.
Further, composite polycrystal-diamond be shaped as cylindrical or conical.
Further, pick matrix adopting unsymmetric structure.
Cutterhead is connected with main shaft of boring machine; Toothholder is installed on the cutterhead; The pick matrix is installed on the toothholder, anti-rotation straight pin structure be the utility model ad hoc part, the anti-rotation straight pin connects pick matrix and toothholder; Pick matrix and toothholder are fixed as one, restriction pick matrix freely rotating in toothholder; The pick crown adopts composite polycrystal-diamond, is welded on the pick matrix, and composite polycrystal-diamond is the main stressed member of cutterhead.Diamond is the highest material of known hardness; Composite polycrystal-diamond mixes the cutting lay formed and cemented carbide substrate layer sintering synthesizes under HTHP by countless fine diamond particles and cementing agent; Have high strength, high rigidity, high-wearing feature, high impact properties and good self-sharpening; These good characteristics make its exploitation that can be applied in coal seam, rock stratum, replace carbide alloy.
In practical work process; Because the restriction of anti-rotation straight pin; The pick matrix can not rotate around the toothholder center, and the pick matrix is in a fixing angle, makes the pick matrix have only a place to contact and do not contact with the rock stratum with the rock stratum all around like this; It is less to wear and tear, and the pick matrix can provide good supporting to the composite polycrystal-diamond crown; The composite polycrystal-diamond crown replaces the carbide alloy crown as digging tool cut rock, has more brought into play the characteristics of diamond compact high-wearing feature.
The beneficial effect of the utility model is:
1, the utility model is to be applied in the high-wearing feature of composite polycrystal-diamond on the pick of development machine, has accelerated drivage efficiency, has improved the application life of cutterhead, has reduced cost, and then reduces construction cost, reduction of erection time.
2, the utility model restriction pick matrix freely rotating in toothholder do not worn and torn the pick matrix all around, and the pick matrix can provide crown is effectively supported for a long time.
3, the utility model adopts novel pick basal body structure, and pick matrix one side is not contacted with the rock stratum, has avoided the wearing and tearing of pick matrix.
4, the utility model is simple in structure, and is easy to process, and cost is low, and service efficiency is high.
Description of drawings:
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is a kind of structural representation of the utility model toothholder;
Fig. 3 is a kind of structural representation of the pick matrix of the utility model embodiment one;
Fig. 4 is a kind of structural representation of the utility model anti-rotation straight pin;
Fig. 5 is the utility model pyramid type composite polycrystal-diamond sketch map;
Fig. 6 is the another kind of structural representation of the utility model;
Fig. 7 is the structural representation of the pick matrix of the utility model embodiment two;
Fig. 8 is the utility model column type composite polycrystal-diamond sketch map.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Embodiment one:
As shown in Figure 1, polycrystalline diamond enhancement mode pick comprises toothholder 1, anti-rotation straight pin 2, pick matrix 3 and pyramid type composite polycrystal-diamond 4.Toothholder 1 is installed on the cutting head of roadheader; Pick matrix 3 is installed on the toothholder 1, and anti-rotation straight pin 2 connects toothholder 1 and pick matrix 3, and pyramid type composite polycrystal-diamond 4 is welded on the pick matrix 3; Pick matrix 3 adopts unsymmetric form, can effectively avoid during work contacting with rock.
Be illustrated in figure 2 as a kind of concrete structure sketch map of toothholder 1, toothholder 1 is provided with the installing hole 5 that anti-rotation straight pin 2 is installed.
Be illustrated in figure 3 as a kind of concrete structure sketch map of pick matrix 3; Pick matrix 3 is provided with the installing hole 6 that anti-rotation straight pin 2 is installed; Different with traditional pick matrix is two sides, 7, the 8 employing unsymmetric structures of pick matrix 3, and the indentation, there of side 8 can effectively avoid 8 places, side on the pick matrix 3 to contact with rock; Pyramid type composite polycrystal-diamond 4 contacts with the rock stratum in the course of the work, and pick matrix 3 is not is not worn and torn, the sustainable support that provides pyramid type composite polycrystal-diamond 4.
Shown in Figure 4 is a kind of concrete structure figure of anti-rotation straight pin 2; Anti-rotation straight pin 2 passes the installing hole 6 on installing hole on the toothholder 15 and the pick matrix 3; Toothholder 1 links together with pick matrix 3 like this, and this structure can effectively prevent pick matrix 3 freely rotating in toothholder 1.7 places, side on the pick matrix 3 do not reach the rock stratum and do not wear and tear, and pick matrix 3 can provide good supporting to composite sheet crown 4.
As shown in Figure 5, pyramid type composite polycrystal-diamond 4 is made up of carbide alloy base 10 and pyramid type polycrystalline diamond layer 9, and the diameter of carbide alloy base 10 is ￠ 13mm ~ ￠ 28mm, and the thickness of pyramid type polycrystalline diamond layer 9 is 0.1 ~ 5.0mm.During making, put into diamond powder and cementing agent above the carbide alloy, and put into cubic hinge press together, form through the HTHP sintering.Hot-forming back composite polycrystal-diamond is a shape as shown in Figure 5.
Embodiment two:
Like Fig. 6, Fig. 7, shown in Figure 8, composite polycrystal-diamond is a column type composite polycrystal-diamond 11 in the present embodiment, and column type composite polycrystal-diamond 11 is by being that carbide alloy base 13, polycrystalline diamond layer 14 are formed.The crown of pick matrix is a column type composite polycrystal-diamond 12.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Other modifications that those of ordinary skills make the technical scheme of the utility model perhaps are equal to replacement; Only otherwise break away from the spirit and the scope of the utility model technical scheme, all should be encompassed in the middle of the claim scope of the utility model.
Claims (3)
1. polycrystalline diamond enhancement mode pick; It is characterized in that: comprise toothholder (1), anti-rotation straight pin (2), pick matrix (3), composite polycrystal-diamond (4); Pick matrix (3) is arranged on the toothholder (1); Anti-rotation straight pin (2) connects toothholder (1) and pick matrix (3), and composite polycrystal-diamond (4) is welded on the pick matrix (3).
2. a kind of polycrystalline diamond enhancement mode pick according to claim 1 is characterized in that: pick matrix (3) adopts unsymmetric structure.
3. a kind of polycrystalline diamond enhancement mode pick according to claim 1 and 2, it is characterized in that: being shaped as of composite polycrystal-diamond (4) is cylindrical or conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203186860U CN202194661U (en) | 2011-08-26 | 2011-08-26 | Polycrystalline diamond enhanced type cutting pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203186860U CN202194661U (en) | 2011-08-26 | 2011-08-26 | Polycrystalline diamond enhanced type cutting pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194661U true CN202194661U (en) | 2012-04-18 |
Family
ID=45949578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203186860U Expired - Lifetime CN202194661U (en) | 2011-08-26 | 2011-08-26 | Polycrystalline diamond enhanced type cutting pick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194661U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646674A (en) * | 2014-12-27 | 2015-05-27 | 株洲三湘硬质合金工具有限公司 | Method for manufacturing wear-resistant part by compounding diamond with metal blank body and product produced by same |
| CN105201501A (en) * | 2015-09-15 | 2015-12-30 | 安徽澳德矿山机械设备科技股份有限公司 | Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine |
| EP2894293A3 (en) * | 2014-01-13 | 2016-07-20 | Sandvik Intellectual Property AB | Cutting pick tool |
-
2011
- 2011-08-26 CN CN2011203186860U patent/CN202194661U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2894293A3 (en) * | 2014-01-13 | 2016-07-20 | Sandvik Intellectual Property AB | Cutting pick tool |
| CN104646674A (en) * | 2014-12-27 | 2015-05-27 | 株洲三湘硬质合金工具有限公司 | Method for manufacturing wear-resistant part by compounding diamond with metal blank body and product produced by same |
| CN105201501A (en) * | 2015-09-15 | 2015-12-30 | 安徽澳德矿山机械设备科技股份有限公司 | Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
|
| CX01 | Expiry of patent term |