CN211648148U - Wear-resistant tooth holder for heavy drum of coal mining machine - Google Patents
Wear-resistant tooth holder for heavy drum of coal mining machine Download PDFInfo
- Publication number
- CN211648148U CN211648148U CN201922289809.1U CN201922289809U CN211648148U CN 211648148 U CN211648148 U CN 211648148U CN 201922289809 U CN201922289809 U CN 201922289809U CN 211648148 U CN211648148 U CN 211648148U
- Authority
- CN
- China
- Prior art keywords
- tooth holder
- base body
- wear
- bushing
- holder base
- 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
Links
- 239000003245 coal Substances 0.000 title abstract description 12
- 238000005065 mining Methods 0.000 title abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000005253 cladding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Images
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- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model provides a wear-resistant tooth holder for a heavy-duty roller of a coal mining machine, which mainly comprises a tooth holder matrix, a tungsten carbide hard alloy wear-resistant block, a front bushing and a rear bushing; the front end and the rear end of an inner hole of the tooth holder base body are respectively provided with a stepped hole for mounting a front bushing and a rear bushing, and the outer arc surface of the tooth holder base body is provided with three arc-shaped grooves for mounting three tungsten carbide hard alloy arc-shaped wear-resistant blocks. The utility model discloses strengthened the wearability of toothholder, delayed the wearing and tearing of toothholder hole and outside to toothholder life has been improved.
Description
Technical Field
The utility model belongs to the technical field of coal mining machine helical drum and specifically relates to a heavy cylinder of coal-winning machine is with wear-resisting toothholder.
Background
Along with good geological conditions and the annual reduction of easy-to-open coal seams, the coal mine has more and more requirements on heavy drums of the coal mining machine which can adapt to complex geological conditions, and the tooth holder is used as a key part on the heavy drum of the coal mining machine, and the cutting performance of cutting teeth of the coal mining machine is directly influenced by the performance of the tooth holder. Therefore, the heavy roller tooth holder of the coal mining machine has to have good wear resistance, the manufacturing process of the heavy roller tooth holder is added with the processes of inner hole high-frequency quenching and external cladding of wear-resistant materials on the basis of the conventional tooth holder manufacturing process at present, but because the two processes are both the adopted hot working method and the temperature is higher, the mechanical property of a tooth holder matrix can be reduced, the size precision of the inner hole of the tooth holder can be influenced, the tooth holder has special requirements on weldability and strength, the thicknesses of a quenching layer and a cladding layer cannot be too thick, so that the quenching layer and the cladding layer on the tooth holder are worn for a long time, and the expected use effect cannot be achieved.
Disclosure of Invention
1. Solves the technical problem
The utility model discloses not enough to the heavy cylinder toothholder of present coal-winning machine exists provides a heavy cylinder of coal-winning machine is with wear-resisting toothholder, and it has not only improved the outside wearability of toothholder, has improved the intensity and the wearability of toothholder hole moreover to the life of toothholder has been improved.
2. Technical scheme
The utility model provides a wear-resistant tooth holder for a heavy drum of a coal mining machine, which mainly comprises a tooth holder base body, three tungsten carbide hard alloy wear-resistant blocks, a front bushing and a rear bushing; the tooth holder base body is made of special high-strength alloy steel, and the front end and the rear end of an inner hole of the tooth holder base body are respectively provided with a stepped hole which is used for installing a front bushing and a rear bushing; the distance from the outer arc surface of the tooth holder base body to the front end surface of the tooth holderdIs 20 mm-30 mm, three arc grooves are uniformly arranged in the radial angle range of 120-180 degrees; the three tungsten carbide hard alloy arc-shaped wear-resistant blocks are made of YG8 hard alloy and are respectively brazed in the three arc-shaped grooves on the tooth holder base body; the front bushing and the rear bushing are made of 42CrMo materials and are respectively arranged in the stepped holes at two ends of the tooth holder base body in an interference fit mode.
3. The utility model has the advantages that
The utility model is provided with the bushings with higher hardness at the front and the rear end stepped holes of the inner hole of the tooth base body, thereby delaying the abrasion of the inner hole of the tooth base; three high-hardness tungsten carbide wear-resistant alloy wear-resistant blocks are arranged outside the tooth holder base body, so that the outside of the tooth holder base body is protected, the early wear of the outside of the tooth holder is avoided, and the service life of the tooth holder is prolonged.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a schematic side view of the shaft structure of the present invention.
FIG. 1. rear bushing; 2. a tooth base substrate; 3. tungsten carbide hard alloy wear-resistant blocks; 4. front bushing
Detailed Description
In fig. 1 to 3, the utility model provides a wear-resistant toothholder for heavy drum of coal mining machine, which mainly comprises a toothholder base body (2), a tungsten carbide hard alloy wear-resistant block (3), a front bushing (4) and a rear bushing (1). The tooth holder base body (2) is formed by die forging of special high-strength alloy steel, the front end and the rear end of an inner hole of the tooth holder base body (2) are respectively provided with a stepped hole, and the front bushing (4) and the rear bushing (1) are respectively arranged in the front stepped hole and the rear stepped hole of the tooth holder base body (2) in an interference fit mode after being frozen by liquid nitrogen; the distance from the outer cambered surface of the tooth holder base body (2) to the front end surface of the tooth holderdThree arc-shaped grooves are uniformly arranged within the range of 20-30 mm and the radial angle of 120-180 degrees, and three tungsten carbide hard alloy arc-shaped wear-resistant blocks (3) are respectively brazed in the arc-shaped grooves on the tooth holder base body (2).
Claims (1)
1. The utility model provides a coal-winning machine heavy wear-resisting toothholder for cylinder which characterized in that: mainly comprises a tooth holder base body, three tungsten carbide hard alloy wear-resistant blocks, a front bushing and a rear bushing; the tooth holder base body is made of special high-strength alloy steel, and the front end and the rear end of an inner hole of the tooth holder base body are respectively provided with a stepped hole which is used for installing a front bushing and a rear bushing; the distance from the outer arc surface of the tooth holder base body to the front end surface of the tooth holderdIs 20 mm-30 mm, three arc grooves are uniformly arranged in the radial angle range of 120-180 degrees; the three tungsten carbide hard alloy arc-shaped wear-resistant blocks are made of YG8 hard alloy and are respectively brazed in the three arc-shaped grooves on the tooth holder base body; the front bushing and the rear bushing are made of 42CrMo materials and are respectively arranged in the stepped holes at two ends of the tooth holder base body in an interference fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289809.1U CN211648148U (en) | 2019-12-19 | 2019-12-19 | Wear-resistant tooth holder for heavy drum of coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289809.1U CN211648148U (en) | 2019-12-19 | 2019-12-19 | Wear-resistant tooth holder for heavy drum of coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648148U true CN211648148U (en) | 2020-10-09 |
Family
ID=72697114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922289809.1U Expired - Fee Related CN211648148U (en) | 2019-12-19 | 2019-12-19 | Wear-resistant tooth holder for heavy drum of coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648148U (en) |
-
2019
- 2019-12-19 CN CN201922289809.1U patent/CN211648148U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |