CN203738334U - Device for disassembling and assembling roller sleeve in cold state - Google Patents
Device for disassembling and assembling roller sleeve in cold state Download PDFInfo
- Publication number
- CN203738334U CN203738334U CN201420069327.XU CN201420069327U CN203738334U CN 203738334 U CN203738334 U CN 203738334U CN 201420069327 U CN201420069327 U CN 201420069327U CN 203738334 U CN203738334 U CN 203738334U
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- CN
- China
- Prior art keywords
- roller
- roller shell
- ring
- core
- cambridge ring
- 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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- 239000000956 alloy Substances 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 7
- 239000003245 coal Substances 0.000 abstract description 6
- 238000003801 milling Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Abstract
The utility model relates to a device for disassembling and assembling a roller sleeve in a cold state. A milling roller device is a core milling assembly of a medium-speed roller coal mill and is composed of a roller frame (1), the roller sleeve (5), a roller core (4), a roller shaft (2), a bearing (3) and other parts, wherein the roller sleeve is a milling part, the service life of the roller sleeve is 6,000-10,000 hours according to different coal types and working conditions, and the roller sleeve needs to be replaced after being abraded. According to the device for disassembling and assembling the roller sleeve, the interference-fit connecting mode between the roller sleeve (5) and the roller core (4) is changed, and a wedge-shaped ring (6) is additionally arranged between the roller sleeve (5) and the roller core (4), extrudes into the position between the roller sleeve (5) and the roller core (4) under the action of axial force of a fastening bolt (7) and plays a role in fixedly connecting the roller sleeve (5) and the roller core (4). When disassembled, the roller sleeve (5) does not need to be heated; the roller sleeve (5) can be disassembled and assembled in the cold state only by disassembling and assembling the fastening bolt (7).
Description
Technical field
The utility model relates to the roller shell attaching/detaching apparatus of Burnisher apparatus in roller ring mill, in particular to a kind of device for cold conditions dismounting roller shell.
Background technology
Roller ring mill is widely used in the coal-grinding pulverized coal preparation system of the industries such as electric power, metallurgy, chemical industry, building materials, has three Burnisher apparatus and be distributed in coal pulverizer in coal pulverizer.Burnisher apparatus is the core of the roller ring mill parts of milling, and is made up of parts such as roller frame, roller shell, roller core, roll shaft, bearings.The parts such as roller shell in Burnisher apparatus, bearing, roller frame are consumable accessorys, need to overhaul replacing reaching after its life-span.
Wherein the roller shell in Burnisher apparatus is the part of milling, and according to the difference of coal and operating mode, its life-span is 6000 to 10000 hours, after roller shell wearing and tearing, needs to change.
Due to performance requirement, roller shell need be relative with roller core fixing, in current Burnisher apparatus, roller shell adopts the mode of interference fit to be fixedly connected with roller core conventionally, in the time needing dismounting after roller shell wearing and tearing, all need to heat roller shell, roller shell heating aperture becomes the large rear specific purpose tool that uses roller shell is separated with roller core, this syndeton and the desired technical difficulty of dismounting mode are larger, consuming time longer, and disassembly process can cause the distortion of roller shell.
The Chinese invention patent that for example application number is 201310210600.6, it discloses a kind of replacing method of vertical grinder grinding roller roller shell, and the method comprises the steps: step 1, removes access door; Step 2, the installation of upset hydraulic cylinder; Step 3, old grinding roller upset; Step 4, old grinding roller unloads and hangs; Step 5, new grinding roller lifting; Step 6, new grinding roller upset; Step 7, the dismounting of upset hydraulic cylinder; Step 8, recovers auxiliary device, and the present invention has improved the efficiency that grinding roller of vertical mill roller shell is changed, and has saved spare parts cost, has reduced labour intensity.But the step 5 in the method, in the hoisting process of new grinding roller roller shell, is installed after new roller shell is heated, assembling requires the speed must be fast, and operating personnel are difficult to assurance like this, and have certain danger.In addition, in the time that wearing and tearing occur new grinding roller roller shell, also need to adopt similar heating means to change, have equally above-mentioned problem.
The Chinese utility model patent that for example application number is 201120172334.9 again, it discloses a kind of grinding roller device for slag vertical-mill, it is by roll shaft, wheel hub, roller shell, rolling bearing composition, wheel hub is sleeved on roll shaft by rolling bearing, the periphery rear end of wheel hub is the protruding conical surface, roller shell rear inner wall has the male cone (strobilus masculinus) of the conical surface and wheel hub to match, the inner conical surface of roller shell passes through bolt, nut, hold-down ring is pressed on wheel hub male cone (strobilus masculinus), there is axle tightening lid at the two ends of roll shaft, there is rolling effect good, durable, simple in structure, stable feature turns round.But owing to adopting hold-down ring to compress between roller shell and wheel hub, there is certain stress in hold-down ring, can be because the phenomenon of the concentrated generation cracking of stress in disassembly process.
Utility model content
The purpose of this utility model is to provide a kind of device for cold conditions dismounting roller shell, and this attaching/detaching apparatus has simple in structure, easy to operate feature.This Burnisher apparatus can be realized in the situation that not heating roller shell, realizes the fast assembling-disassembling to roller shell.
In order to realize above-mentioned purpose of design, the scheme that the utility model adopts is as follows:
For a device for cold conditions dismounting roller shell, between roller core and roller shell, be provided with cambridge ring.
Device operation principle for cold conditions dismounting roller shell of the present utility model is: when to roller shell and roller core assembling, first by fastening bolt, cambridge ring is set in to the end of roller shell, next screw fastening bolt cambridge ring is bored between roller shell and roller core, thereby cambridge ring and fastening bolt are fixed together roller shell and roller core; In the time that roller shell need to be changed, first unscrew fastening bolt, fastening bolt unscrews rear cambridge ring and departs between roller shell and roller core, then fastening bolt is taken off, and roller shell disassembles from roller core.
Preferably, described roll shaft is provided with bearing.
In above-mentioned arbitrary scheme, preferably, the inner ring surface of described cambridge ring is vertical with both ends of the surface.Because the outer ring of roller core is smooth annular surface, thus while only having the inner ring surface of cambridge ring vertical with both ends of the surface, could fit together with the outer ring of roller core, thus roller shell and roller core are fixed together.
In above-mentioned arbitrary scheme, preferably, the outer ring surface of described cambridge ring and both ends of the surface are angle α.
In above-mentioned arbitrary scheme, preferably, described angle α is 10-15 degree.
The outer ring surface of cambridge ring and both ends of the surface are certain angle α, by a large amount of experimental results show that α be 10-15 while spending cambridge ring handling easier, the outer ring surface and the roller shell that ensure cambridge ring better fit together simultaneously, thereby roller shell and roller core are fastened together.
In above-mentioned arbitrary scheme, preferably, described cambridge ring is bored between roller shell and roller core by fastening bolt.
In above-mentioned arbitrary scheme, preferably, described cambridge ring is semi-open type annulus.A large amount of experiment showed, when cambridge ring is selected closed circle, and it is very large that cambridge ring is installed between roller shell and roller core difficulty, even if installing is entered, very difficultly in unloading process so between roller shell and roller core, disassembles, therefore cambridge ring is processed into semi-open type annulus.
In above-mentioned arbitrary scheme, preferably, on the interior ring of described cambridge ring, have multiple release grooves.On the interior ring of cambridge ring, have multiple release grooves, in cambridge ring disassembly process, can disperse the stress of cambridge ring, avoid cambridge ring because stress is concentrated the phenomenon rupturing.
In above-mentioned arbitrary scheme, preferably, the profile of described cambridge ring is Wedge-shaped.
In above-mentioned arbitrary scheme, preferably, described roller shell is selected carbide alloy or composite hard alloy material.Steel bonded carbide has very high hardness at the state of hardening.Due to the high rigidity hard phase that contains a large amount of disperses distributions, its wearability can approach with high-cobalt hart metal.Compared with high alloy die steel, there is higher elastic modelling quantity, wearability, compression strength and bending strength.Compared with carbide alloy, there is good toughness; There is good self lubricity, lower coefficient of friction, good chemical stability, therefore roller shell is selected carbide alloy or composite hard alloy material.
In above-mentioned arbitrary scheme, preferably, on described cambridge ring, have multiple circular holes.Cambridge ring is placed between roller shell and roller core by fastening bolt, therefore have multiple circular holes for installing fastening bolt additional on cambridge ring.
In addition, the interior ring to cambridge ring and the ring surface of outer shroud have carried out grinding process, while having avoided cambridge ring to be arranged between roller shell and roller core, roller shell and roller core are caused to wearing and tearing.
In sum: roller shell of the present utility model and roller core are directly bored cambridge ring between roller shell and roller core by fastening bolt, and roller shell and roller core are fixed together, do not need to heat the cold conditions dismounting that just can realize roller shell, simple in structure, easy to operate; In addition, roller shell is selected carbide alloy or composite hard alloy material
brief description of the drawings
Fig. 1 is according to the explosive view of a preferred embodiment of the device for cold conditions dismounting roller shell of the present utility model.
Fig. 2 is according to the cutaway view of Fig. 1 bottom bracket axle position assembling of the device for cold conditions dismounting roller shell of the present utility model.
Fig. 3 is according to the top view of Fig. 1 cambridge ring of the device for cold conditions dismounting roller shell of the present utility model.
Fig. 4 is according to the cutaway view of Fig. 1 cambridge ring of the device for cold conditions dismounting roller shell of the present utility model.
Number in the figure explanation:
Roller frame 1, roll shaft 2, bearing 3, roller core 4, roller shell 5, wedge type ring 6, fastening bolt 7, release groove 8.
Detailed description of the invention
In order to understand better according to the device for cold conditions dismounting roller shell of the present utility model, describe according to the specific embodiment of the device for cold conditions dismounting roller shell of the present utility model below in conjunction with accompanying drawing.
With reference to figure 1, according to the overall structure schematic diagram of the device for cold conditions dismounting roller shell of the present utility model.For the device of cold conditions dismounting roller shell, roller shell 5 is arranged in Burnisher apparatus, is also provided with roller frame 1, roll shaft 2 and roller core 4 in described Burnisher apparatus, and roller core 4 is placed in roller shell 5, between roller core 4 and roller shell 5, is provided with cambridge ring 6.
Device operation principle for cold conditions dismounting roller shell of the present utility model is: in the time that roller shell 5 and roller core 4 are assembled, first by fastening bolt 7, cambridge ring 6 is set in to the end of roller shell 5, next screw fastening bolt 7 cambridge ring 6 is bored between roller shell 5 and roller core 4, thereby cambridge ring 6 and fastening bolt 7 are fixed together roller shell 5 and roller core 4; In the time that roller shell 5 need to be changed, first unscrew fastening bolt 7, fastening bolt 7 unscrews rear cambridge ring 6 from departing between roller shell 5 and roller core 4, then fastening bolt 7 is taken off, and roller shell 5 disassembles from roller core 4.
In the present embodiment, roll shaft 2 is provided with bearing 3.
In the present embodiment, cambridge ring 6 is bored between roller shell 5 and roller core 4 by fastening bolt 7.In the time that roller shell 5 and roller core 4 are assembled, first by fastening bolt 7, cambridge ring 6 is set in to the end of roller shell 5, next screw fastening bolt 7 cambridge ring 6 is bored between roller shell 5 and roller core 4, thereby cambridge ring 6 and fastening bolt 7 are fixed together roller shell 5 and roller core 4; In the time that roller shell 5 need to be changed, first unscrew fastening bolt 7, fastening bolt 7 unscrews rear cambridge ring 6 from departing between roller shell 5 and roller core 4, then fastening bolt 7 is taken off, and roller shell 5 disassembles from roller core 4.
In the present embodiment, roller shell 5 is selected carbide alloy or composite hard alloy material, makes roller shell 5 have higher intensity.Steel bonded carbide has very high hardness at the state of hardening.Due to the high rigidity hard phase that contains a large amount of disperses distributions, its wearability can approach with high-cobalt hart metal.Compared with high alloy die steel, there is higher elastic modelling quantity, wearability, compression strength and bending strength.Compared with carbide alloy, there is good toughness; There is good self lubricity, lower coefficient of friction, good chemical stability, therefore roller shell 5 is selected carbide alloy or composite hard alloy material.
As shown in Figure 1, be processed with multiple circular holes on the end face of roller core 4, this circular hole is identical with the Circularhole diameter of cambridge ring 6, and the distribution of this circular hole is identical with the distribution of circular hole on cambridge ring 6.In the time that roller shell 5 and roller core 4 are assembled, first fastening bolt 7 is inserted in the circular hole of cambridge ring 6, then cambridge ring 6 is set in to the end of roller shell 5, next screwing fastening bolt 7 makes fastening bolt 7 match with the circular hole on roller core 4, cambridge ring 6 is bored between roller shell 5 and roller core 4, thereby cambridge ring 6 and fastening bolt 7 are fixed together roller shell 5 and roller core 4.
As shown in Figure 2, according to the cutaway view of Fig. 1 bottom bracket axle position assembling of the device for cold conditions dismounting roller shell of the present utility model.Roller shell 5 is fixed together by fastening bolt 7 and cambridge ring 6 with roller core 4.Roller core 4, fastening bolt 7 and cambridge ring 6 are all positioned at the inside of roller shell 5.Can be found out by this figure, the end face of cambridge ring 6 is resisted against on fastening bolt 7 tightly, and in the Burnisher apparatus course of work, cambridge ring 6 can not detach between roller shell 5 and roller core 4, makes the safer work of Burnisher apparatus.
Next consult shown in Fig. 3, according to the top view of Fig. 1 cambridge ring of the device for cold conditions dismounting roller shell of the present utility model.In the present embodiment, on the interior ring of cambridge ring 6, have multiple release grooves 8.On the interior ring of cambridge ring 6, have multiple release grooves 8, in cambridge ring 6 disassembly processes, can disperse the stress of cambridge ring 6, avoid cambridge ring 6 because stress is concentrated the phenomenon rupturing.
In the present embodiment, on cambridge ring 6, have eight release grooves 8, can certainly increase as required or reduce the number of release groove 8, in addition in order to make cambridge ring 6 stress equilibrium everywhere, release groove 8 is evenly distributed on the interior ring of cambridge ring 6, for example 5,6,10 or 12 etc.
Consult shown in Fig. 4, for according to the cutaway view of Fig. 1 cambridge ring of the device for cold conditions dismounting roller shell of the present utility model.In the present embodiment, the inner ring surface of cambridge ring 6 is vertical with both ends of the surface.Because the outer ring of roller core 4 is smooth annular surface, thus while only having the inner ring surface of cambridge ring 6 vertical with both ends of the surface, could fit together with the outer ring of roller core 4, thus roller shell 5 and roller core 4 are fixed together.
In the present embodiment, the outer ring surface of cambridge ring 6 and both ends of the surface are angle α.Experimental results show that by a large amount of the outer ring surface of cambridge ring 6 is processed into while being angle α with both ends of the surface to cambridge ring 6 to be loaded and unloaded easilier, ensures that the outer ring surface of cambridge ring 6 and roller shell 5 better fit together simultaneously, thereby roller shell 5 and roller core 4 are fastened together.
In the present embodiment, described angle α is 10-15 degree.
The outer ring surface of cambridge ring 6 and both ends of the surface are certain angle α, by a large amount of experimental results show that α be 10-15 while spending cambridge ring 6 load and unload easier, the outer ring surface and the roller shell 5 that ensure cambridge ring 6 better fit together simultaneously, thereby roller shell 5 and roller core 4 are fastened together.
In the present embodiment, cambridge ring 6 is semi-open type annulus.A large amount of experimental results show that, in the time that cambridge ring 6 is selected closed circle, it is very large that cambridge ring 6 is installed between roller shell 5 and roller core 4 difficulty, even if installing is entered, in unloading process, be difficult to so disassemble between roller shell 5 and roller core 4, therefore cambridge ring 6 is processed into semi-open type annulus.
In the present embodiment, the profile of cambridge ring 6 is Wedge-shaped, facilitates the dismounting of cambridge ring 6.In the time cambridge ring 6 being bored between roller shell 5 and roller core 4, one end larger diameter of cambridge ring 6 is contained in to outside, the end device inner side that diameter is less, the end face of itself and roller core 4 fits together.
In the present embodiment, on cambridge ring 6, have multiple circular holes.Cambridge ring 6 is placed between roller shell 5 and roller core 4 by fastening bolt 7, therefore have multiple circular holes for installing fastening bolt 7 additional on cambridge ring 6.
In addition, the interior ring to cambridge ring 6 and the ring surface of outer shroud have carried out grinding process, while having avoided cambridge ring 6 to be arranged between roller shell 5 and roller core 4, roller shell 5 and roller core 4 are caused to wearing and tearing.
In sum: roller shell 5 of the present utility model and roller core 4 are directly bored cambridge ring 6 between roller shell 5 and roller core 4 by fastening bolt 7, roller shell 5 and roller core 4 are fixed together, do not need to heat the cold conditions dismounting that just can realize roller shell 5, simple in structure, easy to operate; In addition, roller shell 5 is selected carbide alloy or composite hard alloy material
It will be apparent to those skilled in the art that the device for cold conditions dismounting roller shell of the present utility model comprises any combination of this description each several part.As space is limited and in order to make the simple and clear of description, these combinations are not at length introduced one by one at this, but seen after this description, the scope of the present utility model that any combination of the each several part being made up of this description forms is self-evident, does not therefore add and repeats.
Claims (11)
1. for a device for cold conditions dismounting roller shell, it comprises roll shaft (2), roller core (4) and roller shell (5), it is characterized in that: between roller core (4) and roller shell (5), be provided with cambridge ring (6); Roll shaft (2) is provided with bearing (3); Outer ring surface and the both ends of the surface of cambridge ring (6) are angle α.
2. the device for cold conditions dismounting roller shell as claimed in claim 1, is characterized in that: the inner ring surface of cambridge ring (6) is vertical with both ends of the surface.
3. the device for cold conditions dismounting roller shell as claimed in claim 1, is characterized in that: described angle α is 10-15 degree.
4. the device for cold conditions dismounting roller shell as claimed in claim 1, is characterized in that: cambridge ring (6) is bored between roller shell (5) and roller core (5) by fastening bolt (7).
5. the device for cold conditions dismounting roller shell as described in claim 1 or 4, is characterized in that: cambridge ring (6) is semi-open type annulus.
6. the device for cold conditions dismounting roller shell as claimed in claim 1, is characterized in that: on the interior ring of cambridge ring (6), have multiple release grooves (8).
7. the device for cold conditions dismounting roller shell as described in claim 1 or 4, is characterized in that: the profile of cambridge ring (6) is Wedge-shaped.
8. the device for cold conditions dismounting roller shell as claimed in claim 5, is characterized in that: the profile of cambridge ring (6) is Wedge-shaped.
9. the device for cold conditions dismounting roller shell as claimed in claim 1, is characterized in that: roller shell (5) is selected carbide alloy or composite hard alloy material.
10. the device for cold conditions dismounting roller shell as described in claim 1 or 4, is characterized in that: cambridge ring has multiple circular holes on (6).
11. devices for cold conditions dismounting roller shell as claimed in claim 5, is characterized in that: cambridge ring has multiple circular holes on (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069327.XU CN203738334U (en) | 2014-02-18 | 2014-02-18 | Device for disassembling and assembling roller sleeve in cold state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069327.XU CN203738334U (en) | 2014-02-18 | 2014-02-18 | Device for disassembling and assembling roller sleeve in cold state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203738334U true CN203738334U (en) | 2014-07-30 |
Family
ID=51338197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420069327.XU Expired - Lifetime CN203738334U (en) | 2014-02-18 | 2014-02-18 | Device for disassembling and assembling roller sleeve in cold state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203738334U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385033A (en) * | 2014-08-08 | 2015-03-04 | 安徽米特吉激光科技有限公司 | Roller skin ring fixing device |
| CN107552162A (en) * | 2017-09-19 | 2018-01-09 | 佛山科学技术学院 | A kind of roller apparatus of ceramic raw material milling equipment |
| CN111941027A (en) * | 2020-08-19 | 2020-11-17 | 上海戍尔特设备修造有限公司 | Grinding roller dismounting device and method |
-
2014
- 2014-02-18 CN CN201420069327.XU patent/CN203738334U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385033A (en) * | 2014-08-08 | 2015-03-04 | 安徽米特吉激光科技有限公司 | Roller skin ring fixing device |
| CN104385033B (en) * | 2014-08-08 | 2018-09-21 | 安徽米特吉激光科技有限公司 | Roller skin ring fixing device |
| CN107552162A (en) * | 2017-09-19 | 2018-01-09 | 佛山科学技术学院 | A kind of roller apparatus of ceramic raw material milling equipment |
| CN111941027A (en) * | 2020-08-19 | 2020-11-17 | 上海戍尔特设备修造有限公司 | Grinding roller dismounting device and method |
| CN111941027B (en) * | 2020-08-19 | 2022-02-08 | 上海戍尔特设备修造有限公司 | Grinding roller dismounting device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING ELECTRIC POWER EQUIPMENT GENERAL FACTORY C Free format text: FORMER NAME: BEIJING POWER EQUIPMENT GENERAL PLANT |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee after: BEIJING POWER EQUIPMENT GROUP Co.,Ltd. Address before: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee before: Beijing Power Equipment Group |
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| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
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| CX01 | Expiry of patent term |