CN202520319U - Hob with hard alloy edges - Google Patents
Hob with hard alloy edges Download PDFInfo
- Publication number
- CN202520319U CN202520319U CN2012201247135U CN201220124713U CN202520319U CN 202520319 U CN202520319 U CN 202520319U CN 2012201247135 U CN2012201247135 U CN 2012201247135U CN 201220124713 U CN201220124713 U CN 201220124713U CN 202520319 U CN202520319 U CN 202520319U
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- CN
- China
- Prior art keywords
- cutter
- ring body
- hob
- hat
- blade
- 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
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Abstract
The utility model discloses a hob with hard alloy edges, which is applied in underground engineering equipment. The hob comprises a hob ring body and the plurality of edges arranged on the hob ring body. The hob is characterized in that the edges are in arc-shaped stripy structures; each edge comprises a crown and a connecting part which is arranged at the bottom part of the crown; the crown extends from the top part to the bottom part towards the two sides, so that an arrowhead-shaped structure is formed by the cross sections of the edges; the connecting surface of the hob ring body is provided with a ring-shaped groove; and the connecting parts of the edges are embedded into the ring-shaped groove. The hob disclosed by the utility model has the advantage that by adoption of the structure, the working efficiency and the working life of the hob can be effectively improved.
Description
Technical field
The utility model relates to a kind of tunnel piercing that is used for, and the hobboing cutter in the mine working equipment such as mine, especially a kind of hobboing cutter with carbide-tipped cutter bit.
Background technology
In the hard rock tunnel tunneling process, the life-span of hobboing cutter has determined the efficiency of construction of shield structure to a great extent.Because broken rock load is excessive, often causes the cutter ring body of hobboing cutter to rupture, burst apart, problem such as heavy wear in the hard rock.In order to improve the life-span of hobboing cutter, except improving cutter bearing the life-span, existing architecture advances mainly contains following embodiment:
One, strengthens hobboing cutter width (like heavy cutter ring), to improve the supporting capacity and the abrasion resistance of hobboing cutter.Though this structure can improve the supporting capacity of hobboing cutter, because the point of a knife width increases, edges dull has reduced the efficiency of breaking rock of cutter; Under the identical broken rock degree of depth situation, the stressed rapid increase of cutter ring, bearing load also increases, and causes bearing life to reduce.
Two, tungsten carbide button's tooth in the cutter ring outside is to improve the abrasion resistance of hobboing cutter.Conventional carbide button is generally cylindrical structure, is processed to form the crown of dome shape, taper or wedge shape at a cylindrical end, and is embedded on the cutter ring of hobboing cutter through the mode of interference fit.In broken rock process, utilize the carbide button on the cutter ring that rock is carried out roll extrusion, impact and fragmentation.Because hobboing cutter (when particularly running into hard rock stratum) in broken rock process can receive strong impact and friction; Cause the chimeric position (being the periphery of perforation) of carbide button and hobboing cutter to be worn easily; Strengthened the proud exposure of tooth post; Make the building-in depth of tooth post reduce, greatly reduced the fastening force of tooth post, and then cause carbide button loosening and come off.In addition, the carbide alloy between cog of conventional inserted tooth hob has the gap, and broken rock process produces impact load, and the life-span that cutter bearing is sealed also can have a negative impact.
Disclose a kind of structure of special-shaped crown hard-metal insert among the Chinese patent CN 2695600Y, this carbide button comprises that cross section is the crown and the columniform tooth post of dumb-bell shape, and the area of the bottom surface of its crown and tooth styletable face is identical and seamlessly transit.During use, carbide button is embedded in the perforation of rock bit.In the course of the work, this carbide button faces above-mentioned technological deficiency equally---and the chimeric position of carbide button and rock bit receives brokenly the rock impact force and breakage easily, causes the loosening of carbide button and comes off.
The utility model content
To the deficiency of prior art, the purpose of the utility model is that a kind of hobboing cutter with carbide-tipped cutter bit that can improve hobboing cutter operating efficiency and working life will be provided.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is following:
A kind of hobboing cutter with carbide-tipped cutter bit; Comprise the cutter ring body; And some blades that are installed on this cutter ring body, said blade is the list structure of circular arc, comprises the cutter hat and is located at the connecting portion that this cutter is preced with the bottom; Said cutter hat extends to both sides from the top to the bottom, makes the cross section of this blade form " individual " shape structure; The joint face of said cutter ring body is provided with an annular groove, and the connecting portion of said blade embeds among this annular groove.
In the above-mentioned embodiment, said blade along the circumferential direction, 360 ° be located on the said cutter ring body.
Further, be provided with a gap joint between adjacent two blades.
Preferably, the width of said cutter hat is greater than the width of said connecting portion, and said cutter hat covers the joint face of said cutter ring body.
Further, has an angle between the joint face of said cutter hat bottom surface and cutter ring body.
Preferably, said cutter hat is integral setting with said connecting portion, and weld the angle of said cutter hat bottom surface and said cutter ring body.
In the above-mentioned preferred implementation, said blade adopts Hardmetal materials to make.
With respect to prior art, the utility model can reduce the width of blade because carbide alloy intensity and abrasion resistance are high as far as possible, makes blade sharper, improves the efficiency of breaking rock of hobboing cutter effectively, has reduced the broken rock load to the cutter ring body.And, because blade is distributed in the outside of cutter ring body continuously, to the impact load of cutter ring body, help improving bearing life when greatly having reduced the broken rock of blade.Secondly; Because the width of cutter hat bottom is greater than the width of cutter ring body joint face, cutter ring body that can tool setting hat below plays a protective role, and has improved the power that tightens up between cutter ring body and the connecting portion; Can prevent that blade is loosening and come off, thereby prolong application life of hobboing cutter effectively.
For purpose, characteristic and the effect of understanding the utility model fully, below will combine accompanying drawing that the technique effect of design, concrete structure and the generation of the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the cross-sectional view at A-A place among Fig. 1;
Fig. 3 is the partial enlarged drawing at B place among Fig. 2;
Among the figure:
The 1-blade; The 11-gap joint; 12-cutter hat; The 13-connecting portion; 2-cutter ring body; The 21-weld seam.
The specific embodiment
To shown in Figure 3, a kind of hobboing cutter with high-bearing capacity comprises cutter ring body 2 and some blades 1 like Fig. 1, and blade 1 is installed on the cutter ring body 2.
See also Fig. 2 and Fig. 3, blade 1 is the rectangular of an arc, comprises cutter hat 12 and connecting portion 13.Connecting portion 13 is fixed in the bottom of cutter hat 12, and is preferred, is integral setting with cutter hat 12.Cutter is preced with 12 cross sections and from the top to the bottom, is extended to both sides, makes the width of bottom form a wedge greater than the width at top, has improved the efficiency of breaking rock of hobboing cutter.Connecting portion 13 is located at the bottom of cutter hat 12, makes the cross section of blade 1 form one " individual " shape structure.For intensity and the rub proofness that improves blade 1, the cutter of the blade 1 in present embodiment hat 12 and connecting portion 13 adopt the material of carbide alloy.
As shown in Figure 1, blade 1 along the circumferential direction on the surfaces of revolution that 360 ° are installed on cutter ring body 2 continuously, makes blade 1 form a circulus.In order to eliminate the thermal stresses between the blade, between two adjacent blades 1, also leave the space, form a gap joint 11.
With respect to prior art, because carbide alloy has higher intensity and abrasion resistance, therefore can reduce the width of blade in the utility model as far as possible, improve the efficiency of breaking rock of hobboing cutter effectively, reduced broken rock load to the cutter ring body.And, because blade is distributed in the outside of cutter ring body continuously, to the impact load of cutter ring body, help improving bearing life when greatly having reduced the broken rock of blade.Secondly; Because the width of cutter hat bottom is greater than the width of cutter ring body joint face, cutter ring body that can tool setting hat below plays a protective role, and has improved the power that tightens up between cutter ring body and the connecting portion; Can prevent that blade is loosening and come off, thereby prolong application life of hobboing cutter effectively.
More than describe the preferred embodiment of the utility model in detail, the ordinary skill that should be appreciated that this area need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the utility model design on the prior art basis through logic analysis, reasoning perhaps according to the available technical scheme of limited experiment, all should be among determined protection domain by these claims.
Claims (6)
1. hobboing cutter with carbide-tipped cutter bit; Comprise the cutter ring body, and some blades that is installed on this cutter ring body, it is characterized in that; Said blade is the list structure of circular arc; Comprise the cutter hat and be located at the connecting portion that this cutter is preced with the bottom, said cutter hat extends to both sides from the top to the bottom, makes the cross section of this blade form " individual " shape structure; The joint face of said cutter ring body is provided with an annular groove, and the connecting portion of said blade embeds among this annular groove.
2. hobboing cutter as claimed in claim 1 is characterized in that, said blade along the circumferential direction, 360 ° be located on the said cutter ring body.
3. hobboing cutter as claimed in claim 2 is characterized in that, is provided with a gap joint between two adjacent blades.
4. hobboing cutter as claimed in claim 3 is characterized in that, the width of said cutter hat is greater than the width of said connecting portion, and said cutter hat covers the joint face of said cutter ring body.
5. hobboing cutter as claimed in claim 4 is characterized in that, has an angle between the joint face of said cutter hat bottom surface and cutter ring body.
6. like each described hobboing cutter of claim 1 to 5, it is characterized in that said cutter hat is integral setting with said connecting portion, weld the angle of said cutter hat bottom surface and said cutter ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201247135U CN202520319U (en) | 2012-03-28 | 2012-03-28 | Hob with hard alloy edges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201247135U CN202520319U (en) | 2012-03-28 | 2012-03-28 | Hob with hard alloy edges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520319U true CN202520319U (en) | 2012-11-07 |
Family
ID=47103272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201247135U Expired - Fee Related CN202520319U (en) | 2012-03-28 | 2012-03-28 | Hob with hard alloy edges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520319U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112930430A (en) * | 2018-11-23 | 2021-06-08 | 山特维克矿山工程机械工具股份有限公司 | Disc cutter for tunnel boring machine and method for producing the same |
| CN114294002A (en) * | 2021-12-28 | 2022-04-08 | 株洲硬质合金集团有限公司 | Hob cutter ring with transition wear-resistant layer and production process thereof |
-
2012
- 2012-03-28 CN CN2012201247135U patent/CN202520319U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112930430A (en) * | 2018-11-23 | 2021-06-08 | 山特维克矿山工程机械工具股份有限公司 | Disc cutter for tunnel boring machine and method for producing the same |
| CN114294002A (en) * | 2021-12-28 | 2022-04-08 | 株洲硬质合金集团有限公司 | Hob cutter ring with transition wear-resistant layer and production process thereof |
| CN114294002B (en) * | 2021-12-28 | 2022-12-13 | 株洲硬质合金集团有限公司 | Hob cutter ring with transition wear-resistant layer and production process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20140328 |