CN103670406A - Alloy coal mining bit for coal excavating - Google Patents
Alloy coal mining bit for coal excavating Download PDFInfo
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- CN103670406A CN103670406A CN201310665704.6A CN201310665704A CN103670406A CN 103670406 A CN103670406 A CN 103670406A CN 201310665704 A CN201310665704 A CN 201310665704A CN 103670406 A CN103670406 A CN 103670406A
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- coal
- cone
- tooth handle
- alloy
- cutting teeth
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Abstract
The invention discloses an alloy coal mining bit for coal excavating. The alloy coal mining bit comprises a tooth handle and a tooth tip, wherein the tooth handle is arranged on the lower part of the tooth tip; the tooth handle is a cylindrical tooth handle; the tooth tip consists of a cone, a cylinder and a circular truncated cone, wherein the cone is arranged on the upper part of the cylinder; the circular truncated cone is arranged on the lower part of the cylinder; a joint of the circular truncated cone and the cylindrical tooth handle is provided with a transition circular arc with the radius of 6.0mm; a conical surface angle a of the cone is 75 degrees; a plurality of convex threads which are consistent in turning direction are arranged on the head part of the cone; concave threads which are consistent in turning direction are formed among the convex threads; rotary threads are arranged on the side surface of the cylindrical tooth handle. The alloy coal mining bit for the coal excavating, disclosed by the invention, is reasonable in structural design, high in qualification rate during production, long in service life and capable of being applied to a mechanical alloy coal mining bit of a coal excavator to improve the production efficiency and increase economic benefits.
Description
Technical field
The present invention relates to a kind of coal cutting teeth, relate in particular to the alloy coal cutting teeth that a kind of coal digging is used.
Background technology
Along with large-scale coal-cutting machinery constantly applies in coal digging production, coal-winning machine, the machine of digging well have progressively replaced original ball tooth pricker sheet drilling tool, be widely used in the coal cutting teeth on coal-cutting machinery, economic and practical owing to having, save the features such as raw material and be deeply subject to user's favor.Be applied at present coal cutting teeth on coal-cutting machinery and be mostly " mushroom; made by Hardmetal materials; coal cutting teeth comprises tooth head and tooth handle, but due to the complex structure of existing coal cutting teeth, compressing difficulty; during production, qualification rate is low; and in actual digging production and application, the wearing and tearing of tooth head are large, easily collapse tooth; cause the application life of coal cutting teeth short, affect to a certain extent production efficiency and the economic benefit of enterprise.
Summary of the invention
Technical problem to be solved by this invention is: a kind of reasonable in design is provided, and during production, qualification rate is high, long service life, can effectively improve its production efficiency and economic benefit for coal mining machinery alloy coal cutting teeth.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
The alloy coal cutting teeth that coal digging is used, is characterized in that, comprises that tooth handle and crown form, and tooth handle is placed in the bottom of crown; Described tooth handle is a cylinder tooth handle; Described crown consists of cone, cylinder and Rotary-table, and cone is placed in cylindrical top, and Rotary-table is placed in cylindrical bottom.
The junction of described Rotary-table and cylinder tooth handle is manufactured with transition arc, and the radius of transition arc is 6.0mm.
The face angle a of described cone is 75 °.
Described cone head is provided with the convex thread that some rotation directions are consistent, forms the recessed screw thread that rotation direction is consistent between convex thread.
There is rotation screw thread the side of described cylinder tooth handle.
Compared with prior art, the beneficial effect that the present invention has is:
The alloy coal cutting teeth that a kind of coal digging of the present invention is used is provided with the convex thread that some rotation directions are consistent on cone head, forms the recessed screw thread that rotation direction is consistent between convex thread.When the convex thread in construction on this coal cutting teeth impacts and pushes in the lasting opposing that is subject to rock stratum crag, will drive whole pick on cylinder in toothholder nest along thread rotary orientation rightabout axial rotation, can avoid certain part of coal cutting teeth head work plane to contact and be worn with crag all the time, cause coal cutting teeth fracture.Recessed screw thread can be used as the passage of heat radiation, row rock dust, gas-removing gas, can absorb the dust water that toothholder sprays, cutting rock stratum efficiency at low temperatures of protection coal cutting teeth crown and the overall wear resistance of coal cutting teeth.The cone crown of this invention adopts multistage cambered surface rounding off to connect, the junction of cylinder tooth handle and cone crown is by the round and smooth connection of transition arc, make coal cutting teeth overall construction design reasonable, when compressing, the compacting quality of product has obtained good improvement, compressing easy, qualification rate is high, and can effectively improve the application life of coal cutting teeth.Thoroughly solved existing coal cutting teeth due to unreasonable structure, caused compressing difficulty, during production, qualification rate is low, and during use, the wearing and tearing of tooth head greatly, are easily collapsed tooth, the problem that application life is short.
Accompanying drawing explanation
Fig. 1 is the structural representation of the alloy coal cutting teeth used of a kind of coal digging of the present invention.
In figure, be labeled as: cylinder tooth handle 1, cone 2, cylinder 3, Rotary-table 4, transition arc 5, rotation screw thread 6, convex thread 7.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Refer to Fig. 1, the alloy coal cutting teeth that a kind of coal digging is used, is characterized in that, comprises that tooth handle and crown form, and tooth handle is placed in the bottom of crown; Described tooth handle is a cylinder tooth handle 1; Described crown consists of cone 2, cylinder 3 and round platform 4 bodies, and cone 2 is placed in the top of cylinder 3, and Rotary-table 4 is placed in the bottom of cylinder 3; Described Rotary-table 4 is manufactured with transition arc 5 with the junction of cylinder tooth handle 1, the radius of transition arc 5 is 6.0mm, this radius size can make the alloy coal cutting teeth that this coal digging is used when compressing, not occur crackle, makes product quality obtain good improvement; The face angle a of described cone is 75 °, by controlling conical surface angle, makes conical surface rounding off, is greatly improved the application life of the alloy coal cutting teeth that coal digging uses, and then improve its user's production efficiency and economic benefit; Described cone 2 heads are provided with the convex thread 7 that some rotation directions are consistent, between convex thread 7, form the recessed screw thread that rotation direction is consistent, when the convex thread 7 in construction on this coal cutting teeth impacts and pushes in the lasting opposing that is subject to rock stratum crag, will drive whole pick on cylinder in toothholder nest along thread rotary orientation rightabout axial rotation, can avoid certain part of coal cutting teeth head work plane to contact and be worn with crag all the time, cause coal cutting teeth fracture.Recessed screw thread can be used as the passage of heat radiation, row rock dust, gas-removing gas, can absorb the dust water that toothholder sprays, cutting rock stratum efficiency at low temperatures of protection coal cutting teeth crown and the overall wear resistance of coal cutting teeth; There is rotation screw thread 6 side of described cylinder tooth handle 1, is convenient to product and installs.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claim of the present invention.
Claims (5)
1. the alloy coal cutting teeth that coal digging is used, is characterized in that, comprises that tooth handle and crown form, and tooth handle is placed in the bottom of crown; Described tooth handle is a cylinder tooth handle; Described crown consists of cone, cylinder and Rotary-table, and cone is placed in cylindrical top, and Rotary-table is placed in cylindrical bottom.
2. the alloy coal cutting teeth that a kind of coal digging as claimed in claim 1 is used, is characterized in that, the junction of described Rotary-table and cylinder tooth handle is manufactured with transition arc, and the radius of transition arc is 6.0mm.
3. the alloy coal cutting teeth that a kind of coal digging as claimed in claim 1 is used, is characterized in that, the face angle a of described cone is 75 °.
4. the alloy coal cutting teeth that a kind of coal digging as claimed in claim 1 is used, is characterized in that, described cone head is provided with the convex thread that some rotation directions are consistent, forms the recessed screw thread that rotation direction is consistent between convex thread.
5. the alloy coal cutting teeth that a kind of coal digging as claimed in claim 1 is used, is characterized in that, there is rotation screw thread the side of described cylinder tooth handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310665704.6A CN103670406A (en) | 2013-12-09 | 2013-12-09 | Alloy coal mining bit for coal excavating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310665704.6A CN103670406A (en) | 2013-12-09 | 2013-12-09 | Alloy coal mining bit for coal excavating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670406A true CN103670406A (en) | 2014-03-26 |
Family
ID=50309095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310665704.6A Pending CN103670406A (en) | 2013-12-09 | 2013-12-09 | Alloy coal mining bit for coal excavating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670406A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194791A (en) * | 1977-11-18 | 1980-03-25 | Kennametal Inc. | Grooved earthworking bit and method of enhancing the life thereof |
| US20070205652A1 (en) * | 2004-03-15 | 2007-09-06 | Wright Stewart J | Rotatable Cutting Tool |
| CN101086206A (en) * | 2007-07-09 | 2007-12-12 | 姚勋 | Mining hard alloy coal cutting teeth |
| CN202531167U (en) * | 2012-03-21 | 2012-11-14 | 李志东 | Novel coal mining machine cutting pick |
-
2013
- 2013-12-09 CN CN201310665704.6A patent/CN103670406A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194791A (en) * | 1977-11-18 | 1980-03-25 | Kennametal Inc. | Grooved earthworking bit and method of enhancing the life thereof |
| US20070205652A1 (en) * | 2004-03-15 | 2007-09-06 | Wright Stewart J | Rotatable Cutting Tool |
| CN101086206A (en) * | 2007-07-09 | 2007-12-12 | 姚勋 | Mining hard alloy coal cutting teeth |
| CN202531167U (en) * | 2012-03-21 | 2012-11-14 | 李志东 | Novel coal mining machine cutting pick |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |