CN101086206A - Mining hard alloy coal cutting teeth - Google Patents
Mining hard alloy coal cutting teeth Download PDFInfo
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- CN101086206A CN101086206A CN 200710035305 CN200710035305A CN101086206A CN 101086206 A CN101086206 A CN 101086206A CN 200710035305 CN200710035305 CN 200710035305 CN 200710035305 A CN200710035305 A CN 200710035305A CN 101086206 A CN101086206 A CN 101086206A
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- teeth
- cutting teeth
- coal cutting
- thread
- cutting
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Abstract
The invention discloses a horniness metal cutting coal teeth for mine, including the taper head, the taper head is equipped with some convex thread of the same rotary direction, there is concave thread with the same rotary direction between the convex thread. After the cutting coal teeth is installed on the roller of the development machine, when constructing, the convex thread on the cutting coal teeth comes in for the continuing impact and compression resistance of the terrane, it will bring the whole cutting teeth, along screw thread the opposite rotary direction axial rotation in roller upper seat, to avoid a part of head face of cutting coal teeth has always contact with the rock and abraded, resulting in cutting coal teeth fracture. The concave thread can be used as the access for heat, rock powder and gas, to absorb the dust water that the tooth seat insufflation, to protect the teeth sharp at low temperature of the rock cutting efficiency and the overall endure milling capability of the teeth.
Description
Technical field
The invention belongs to the carbide alloy mining tool, be specifically related to a kind of mining hard alloy coal cutting teeth.
Background technology
At present, the head of mining hard alloy coal cutting teeth all is that the cone or half ball-crown body of the smooth work plane of circular cone constitutes, and tooth body and the soldering of taper base frame are gone in the hole of steel-tooth body front end, are assembled into the pick of engineering development machine.Pick is installed in the toothholder nest on the development machine cylinder, and toothholder is welded on the development machine cylinder with electric welding.When development machine cylinder rotary work, its pick that coal cutting teeth is housed cuts the rock stratum thereupon, because the rock stratum crag is to the extruding of smooth the putting up a resistance property of work plane of coal cutting teeth circular cone, pick can't rotation in the toothholder nest, make the smooth work plane part of coal cutting teeth circular cone be worn away into a plane repeatedly by crag all the time, cause the alloy coal cutting teeth exposed, this moment, the flexural strength of coal cutting teeth declined to a great extent, fracture when very easily causing coal cutting teeth work perhaps makes coal cutting teeth come off in the steel-tooth body; Simultaneously, the steel-tooth body very easily produces spark with the crag friction after losing the protection of coal cutting teeth alloy, in case the gas density on the working face of coal seam is concentrated, the danger of gas explosion is arranged then.So it is to cause coal cutting teeth fracture, cause naked light, cause the key factor of gas explosion incident that pick integral body can not be rotated on cylinder freely.Just because of this, the every driving certain hour of mining excavation machine operation person just must stop headwork, and the pick on the rotary drum avoids certain part of coal cutting teeth work plane to be concentrated extruding and abrasion by hand.
On the other hand, the head of existing mining hard alloy coal cutting teeth is cone or half ball-crown body, cuts the rock stratum in coal cutting crown incision rock stratum, the tooth head is airtight by the rock stratum, tooth head temperature up to 500 ℃ about, rock dust is current can't discharge, the water spray on the pick toothholder can't spray and crown, so the wearing and tearing of pick crown are big, quick abrasion, and easily collapse tooth, the product operating period is short, production efficiency is low, causes the particularly waste of strategic tungsten resource of China's resources of production.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of mining hard alloy coal cutting teeth is provided.After development machine adopted this coal cutting teeth, pick can rotate automatically in tunneling construction, was worn thereby avoid certain part of coal cutting teeth head work plane to contact with crag all the time, caused the coal cutting teeth fracture.This coal cutting teeth can also solve the problem that rock dust is discharged in the construction, reduces wearing and tearing, increases application life.
Realize that the technical scheme that the object of the invention adopts is: mining hard alloy coal cutting teeth comprises conical nose, is provided with the convex thread of some rotation direction unanimities on conical nose, forms the recessed screw thread of rotation direction unanimity between the convex thread.
Mining hard alloy coal cutting teeth of the present invention is contained on the development machine cylinder after being made into pick, in the construction along with the rotation of development machine cylinder, when the convex thread on this coal cutting teeth impacts and pushes in the lasting opposing that is subjected to the rock stratum crag, will drive whole pick on cylinder in the toothholder nest along thread rotary orientation rightabout axial rotation, can avoid certain part of coal cutting teeth head work plane to contact with crag all the time and be worn, cause the coal cutting teeth fracture.The rotation of pick can be converted into rotary motive power with the straight line power of rock effect on it.The radius of coal cutting teeth convex thread is directly proportional with the pick rotating speed, and the required external force of the bigger rotation of radius is littler.So need be when driving, every work a period of time is the pick on the rotary drum by hand, and the serialization operating efficiency 1.5-2 that significantly improves the development machine pick doubly increases the service life, and significantly reduces the cost of driving rock stratum.
When coal cutting teeth on the pick and the cutting of rock stratum crag; recessed screw thread on it can be used as the passage of heat radiation, row's rock dust, gas-removing gas; can absorb the dust water that toothholder sprays, protection pick crown at low temperatures cutting rock stratum efficient and the overall wear resistance of coal cutting teeth.Simultaneously the healthy of mining excavation machine operation person played a protective role, also can eliminate the gas explosion that development machine may cause because of coal cutting teeth fracture friction.
Description of drawings
Fig. 1 is the structural representation of mining hard alloy coal cutting teeth of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the different structure schematic diagram of mining hard alloy coal cutting teeth of the present invention.
Fig. 4 is the mode of occupation schematic diagram of mining hard alloy coal cutting teeth of the present invention on pick.
The specific embodiment
Embodiment 1: as shown in Figure 1, 2, mining hard alloy coal cutting teeth is made up of tooth body 1 and conical nose, is provided with the convex thread 2 of some rotation direction unanimities on conical nose, forms the recessed screw thread 3 of rotation direction unanimity between the convex thread 2.
Embodiment 2: the present invention also comprises structure as shown in Figure 3, and its head is half ball-crown body, and top concave, convex screw thread is identical with embodiment 1.
Mode of occupation of the present invention is seen Fig. 4, and the tooth body soldering of mining hard alloy coal cutting teeth A is assembled into engineering development machine coal cutting teeth in the hole of steel-tooth body B front end.
Claims (1)
1, a kind of mining hard alloy coal cutting teeth comprises conical nose, it is characterized in that being provided with on conical nose the convex thread of some rotation direction unanimities, forms the recessed screw thread of rotation direction unanimity between the convex thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710035305 CN101086206A (en) | 2007-07-09 | 2007-07-09 | Mining hard alloy coal cutting teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710035305 CN101086206A (en) | 2007-07-09 | 2007-07-09 | Mining hard alloy coal cutting teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101086206A true CN101086206A (en) | 2007-12-12 |
Family
ID=38937341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710035305 Pending CN101086206A (en) | 2007-07-09 | 2007-07-09 | Mining hard alloy coal cutting teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101086206A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975062A (en) * | 2010-10-10 | 2011-02-16 | 李仕清 | Efficient cutter head |
| CN102086757A (en) * | 2010-10-23 | 2011-06-08 | 李仕清 | Composite cutting drill |
| CN102121351A (en) * | 2010-12-06 | 2011-07-13 | 李仕清 | Efficient tool bit with positioning hole, positioning groove or composite positioning hole |
| CN102121383A (en) * | 2010-10-17 | 2011-07-13 | 李仕清 | Efficient cutting tooth |
| CN103670406A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Alloy coal mining bit for coal excavating |
| CN105257289A (en) * | 2015-09-28 | 2016-01-20 | 安庆市华骐机械配件有限公司 | Coal cutter drum with wear-resistant ultrasonic cutting picks |
-
2007
- 2007-07-09 CN CN 200710035305 patent/CN101086206A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975062A (en) * | 2010-10-10 | 2011-02-16 | 李仕清 | Efficient cutter head |
| CN102121383A (en) * | 2010-10-17 | 2011-07-13 | 李仕清 | Efficient cutting tooth |
| CN102086757A (en) * | 2010-10-23 | 2011-06-08 | 李仕清 | Composite cutting drill |
| CN102121351A (en) * | 2010-12-06 | 2011-07-13 | 李仕清 | Efficient tool bit with positioning hole, positioning groove or composite positioning hole |
| WO2012075671A1 (en) * | 2010-12-06 | 2012-06-14 | Li Shiqing | High efficiency crack-resistant reduced-dusting milling cutter |
| CN103670406A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Alloy coal mining bit for coal excavating |
| CN105257289A (en) * | 2015-09-28 | 2016-01-20 | 安庆市华骐机械配件有限公司 | Coal cutter drum with wear-resistant ultrasonic cutting picks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20071212 |