CN202220606U - Polycrystalline diamond cutting tooth - Google Patents
Polycrystalline diamond cutting tooth Download PDFInfo
- Publication number
- CN202220606U CN202220606U CN2011203953025U CN201120395302U CN202220606U CN 202220606 U CN202220606 U CN 202220606U CN 2011203953025 U CN2011203953025 U CN 2011203953025U CN 201120395302 U CN201120395302 U CN 201120395302U CN 202220606 U CN202220606 U CN 202220606U
- Authority
- CN
- China
- Prior art keywords
- tooth
- polycrystalline diamond
- pick
- head
- crown
- 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 - Lifetime
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Abstract
The utility model relates to a polycrystalline diamond cutting tooth, comprising a steel cutting tooth body, wherein a tooth head is fixed on the steel cutting tooth body, a tooth top is arranged at the top end of the tooth head, the tooth head is a hard alloy tooth head, the tooth top is a polycrystalline diamond compact tooth top and comprises a base and a polycrystalline diamond layer, the base is fixed on the tooth head and is a hard alloy base, and the polycrystalline diamond layer is arranged at the front end of the base. In the utility model, the tooth top made of polycrystalline diamond compacts is additionally arranged on the tooth head of the cutting tooth of an original tunneling machine, so as to increase the wearing resistance of the cutting tooth, increase the tunneling efficiency of the tunneling machine, prolong the service life of the cutting tooth, reduce the replacement times of the cutting tooth, reduce the construction cost and improve the working efficiency.
Description
Technical field:
The utility model belongs to coal mine roadway road heading machinery and comprehensive mining machinery technical field, is specifically related to the polycrystalline diamond pick that a kind of road heading machinery or comprehensive mining machinery are used.
Background technology:
In the prior art, carbide alloy pick structure is made up of two parts.Wherein a part is a pick steel body, and pick steel body is processed (like conventional alloy steel products such as 42CrMo, 35CrMnSi) by the specific alloy steel; Another part is the carbide alloy crown, and the carbide alloy crown is welded on pick steel body head.Carbide alloy pick structure is widely used in the road heading machinery and comprehensive mining machinery in various collieries.In practical work process, when running into the total rock layer of high rigidity, receive bigger shock loading and friction, the wearing and tearing of carbide alloy pick are very fast, had a strong impact on the operating efficiency of road heading machinery and comprehensive mining machinery.The failure mode of carbide alloy pick mainly contains two kinds: the one, and along with the wearing and tearing of carbide alloy crown, the pick rust, the pick wearing and tearing on whole cutterhead acquire a certain degree, and drivage efficiency will significantly descend.The 2nd, because pick steel body abrasion resistance is low, wear and tear prior to carbide alloy pick point around the pick steel body head in the work, during heavy wear, pick steel body has lost the support protective effect to crown, comes off with regard to integral body thereby crown is not is not also worn and torn fully, and pick lost efficacy.The purpose of the utility model is exactly the deficiency that overcomes existing pick form of structure, and a kind of more pick of high rigidity rock stratum that cuts is provided.
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 pick; It is on the tooth head of the pick of original development machine, to increase the crown that composite polycrystal-diamond is made, thereby increases the anti-wear performance of pick, thereby reaches the drivage efficiency of development machine; Improve pick application life; Reduced pick and changed number of times, and then reduced construction cost, increased work efficiency.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of polycrystalline diamond pick, it comprises pick steel body, wherein: be fixed with the tooth head on the described pick steel body, tooth crown end is provided with crown, and the tooth head is the hard-metal insert head, and crown is the composite polycrystal-diamond crown.
Further, described composite polycrystal-diamond crown comprises base and polycrystalline diamond layer, and base is fixed on the tooth head, and base is the carbide alloy base, and its front end is provided with polycrystalline diamond layer.
Further, described crown is conical or is cylindrical.
The beneficial effect of the utility model is:
1, the utility model is on the tooth head of the pick of original development machine, to increase the crown that composite polycrystal-diamond is made; Thereby increase the anti-wear performance of pick; Thereby reach the drivage efficiency of development machine, improve pick application life, reduced pick and changed number of times; And then the reduction construction cost, increase work efficiency.
2, the utility model adopts three part-structures to form, and compare with traditional pick and have more the hard-metal insert head part, also be that part pick rigid body head is replaced by the hard-metal insert head.Because the abrasion resistance of hard-metal insert head is higher than the abrasion resistance of pick rigid body head, not easy to wear around the hard-metal insert head, the hard-metal insert head can provide provides for a long time effectively support to the composite polycrystal-diamond crown.
Though 3, the utility model pick processing cost simple in structure, easy to use, single has raising, comprehensive use cost descends, and can effectively improve the drivage efficiency of development machine, improves pick application life, reduces frequency of maintenance, reduces construction cost.
Description of drawings:
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is the A portion enlarged diagram of the utility model Fig. 1;
Fig. 3 is another structural representation of the utility model;
Fig. 4 is the B portion enlarged diagram of the utility model Fig. 3.
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Embodiment one:
Like Fig. 1, shown in Figure 2, a kind of polycrystalline diamond pick comprises pick steel body 1; Be fixed with tooth head 2 on the pick steel body 1, tooth head 2 tops are provided with crown 3, and tooth head 2 is the hard-metal insert head; Crown 3 is conical composite polycrystal-diamond crown, and it comprises base 4 and polycrystalline diamond layer 5, and base 4 is fixed on the tooth head 2; Base 4 is the carbide alloy base, and base 4 front ends are provided with polycrystalline diamond layer 5.
During making, tooth head 2 is welded on the pick steel body 1, and then crown 3 is welded on the tooth head 2 gets final product.During use, composite polycrystal-diamond crown 3 is main stressed members.Diamond is the highest material of known hardness; Composite polycrystal-diamond is mixed the polycrystalline diamond layer 5 formed and carbide alloy base 4 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.In real work, 2 pairs of composite polycrystal-diamond crowns 3 of hard-metal insert head provide good supporting; Composite polycrystal-diamond crown 3 has been brought into play the characteristics of diamond compact high-wearing feature as digging tool cut rock.
Embodiment two:
Like Fig. 3, shown in Figure 4, repeat embodiment one, following difference is arranged: crown 3 is cylindrical composite polycrystal-diamond crown.
Be noted that; The foregoing description is to the explanation of the utility model technical scheme and unrestricted; Other modification that is equal to replacement or makes of affiliated technical field those of ordinary skill according to prior art; As long as do not exceed the thinking and the scope of the utility model technical scheme, all should be included within the desired interest field of the utility model.
Claims (3)
1. polycrystalline diamond pick; It comprises pick steel body (1), it is characterized in that: be fixed with tooth head (2) on the described pick steel body (1), tooth head (2) top is provided with crown (3); Tooth head (2) is the hard-metal insert head, and crown (3) is the composite polycrystal-diamond crown.
2. polycrystalline diamond pick according to claim 1; It is characterized in that: described composite polycrystal-diamond crown comprises base (4) and polycrystalline diamond layer (5); Base (4) is fixed on the tooth head (2); Base (4) is the carbide alloy base, and its front end is provided with polycrystalline diamond layer (5).
3. polycrystalline diamond pick according to claim 1 is characterized in that: described crown (3) is for taper shape or for cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203953025U CN202220606U (en) | 2011-10-18 | 2011-10-18 | Polycrystalline diamond cutting tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203953025U CN202220606U (en) | 2011-10-18 | 2011-10-18 | Polycrystalline diamond cutting tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220606U true CN202220606U (en) | 2012-05-16 |
Family
ID=46042633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203953025U Expired - Lifetime CN202220606U (en) | 2011-10-18 | 2011-10-18 | Polycrystalline diamond cutting tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080686A (en) * | 2019-05-14 | 2019-08-02 | 河南四方达超硬材料股份有限公司 | A kind of polycrystalline diamond down-the-hold drill bit |
-
2011
- 2011-10-18 CN CN2011203953025U patent/CN202220606U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080686A (en) * | 2019-05-14 | 2019-08-02 | 河南四方达超硬材料股份有限公司 | A kind of polycrystalline diamond down-the-hold drill bit |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |