CN103567745A - Device and method for assembling pulling-straightening roller of straightening and withdrawal machine in continuous molten steel casting - Google Patents
Device and method for assembling pulling-straightening roller of straightening and withdrawal machine in continuous molten steel casting Download PDFInfo
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- CN103567745A CN103567745A CN201310535038.4A CN201310535038A CN103567745A CN 103567745 A CN103567745 A CN 103567745A CN 201310535038 A CN201310535038 A CN 201310535038A CN 103567745 A CN103567745 A CN 103567745A
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- pulling
- straightening roller
- straightening
- roller
- bearing
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 238000005266 casting Methods 0.000 title abstract 3
- 238000009749 continuous casting Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 10
- 239000002965 ropes Substances 0.000 claims description 10
- 239000000725 suspensions Substances 0.000 claims description 7
- 230000000994 depressed Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000875 corresponding Effects 0.000 claims description 3
- 239000007789 gases Substances 0.000 claims description 3
- 239000011901 water Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagrams Methods 0.000 description 3
- 239000010721 machine oils Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 methods Methods 0.000 description 3
- 238000005516 engineering processes Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000314 lubricants Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003921 oils Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000011514 iron Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 materials Substances 0.000 description 1
- 239000002184 metals Substances 0.000 description 1
- 229910052751 metals Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
Abstract
Description
Technical field
The present invention relates to a kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device and assembly method, belong to the mechanical production devices that molten steel foundry work journey is used, specifically refer to a kind of vertical Ye of colding pressing Kong Installed roller method and device.
Background technology
In continuous casting of molten steel production technology, must be provided with withdrawal straightening machine by strand from segmental arc strand out after flex point is aligned, strand continues along horizontal line ejection.Withdrawal straightening machine plays a part throwing and strong base, send in addition the effect of dummy bar.The working condition of wherein straightening (freedom) roller the most directly affects quality and the efficiency of withdrawal straightening machine throwing.Straightening (freedom) roller is used the hot charge practices of machine oil heating bearings more when running in bearings at present, the machine oil boiling point of heating serviceability temperature is at 140～170 ℃, and the sealing ring material of bearing face is nitrile rubber, operating temperature-40～+ 100 ℃, damage sealing ring over sealing ring heat resisting temperature; Seal failure causes bearing lubrication situation to worsen, and affected by 150～250 ℃ of hot environments and iron scale the stuck fault of roller occurs.And hot charge practice had both been wasted machine oil, contaminated environment, loaded down with trivial details, the inefficiency of program again.Sealing effectiveness is directly connected to the result of use of lubricant effect and whole withdrawal straightening machine: sealing and lubricant effect are good, more than can reaching half a year the service life of straightening and free roll; And sealing and lubrication failure, straightening (freedom) roller less than in service life 7 days, had both delayed the production time, affected again cc billet surface quality.
Summary of the invention
Object of the present invention is exactly to overcome the damage problem of the high oil temperature of Chuan Tong Installed roller mode to rubber seal, and a kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device and assembly method are provided, and can protect sealing, environment-friendly high-efficiency.
Technical scheme of the present invention: continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device of the present invention comprises mechanical part and hydraulic control part, mechanical part comprises frame leg, be arranged on the framework platform on frame leg, there is the central shaft hole of pulling-straightening roller location at framework platform center, the doorframe erecting on framework platform, the central shaft hole dead in line of doorframe place central plane and framework platform, doorframe top cross-bar is installed hydraulic ram cylinders, the piston rod of hydraulic ram cylinders is corresponding with central shaft hole vertically downward, is furnished with pushes against sleeve.
There is counter flange at central shaft hole place on described framework platform, and bearing assembly detent is arranged at counter flange top.
Compression backing plate is established at set pushes against sleeve top.
The Hydraulic Station being connected with hydraulic ram cylinders is the portable standard universal type of dolly device.
A kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembly method of the present invention, step is as follows:
1) with overhead traveling crane, the first roll shaft of pulling-straightening roller is put into platform central shaft hole, adjust pulling-straightening roller position, pulling-straightening roller axis is overlapped substantially with platform central shaft hole axis, pulling-straightening roller end face is steadily located on framework platform;
2) the water-cooled transparent cover that installs rubber seal is assemblied on the second roll shaft, water-cooled transparent cover water flowing end is pressed close to axle sleeve step;
3) bearing block that bearing is housed is assemblied on the second roll shaft, is placed in water-cooled transparent cover;
4) pushes against sleeve is enclosed within on the second roll shaft, starts hydraulic ram cylinders, piston rod stretches out and withstands pushes against sleeve, and pushes against sleeve lower end pushing bearing inner race, is progressively depressed into bearing axle sleeve step position;
5) transparent cover is put into the second roll shaft, be positioned on bearing and bearing block, with bolt and nut, water-cooled transparent cover, bearing block, transparent cover are connected, the bearing assembly completing on the second roll shaft is installed;
6) start overhead traveling crane, pulling-straightening roller is sling and swung to, make the first roll shaft of pulling-straightening roller winch to pulling-straightening roller top, counter flange is placed on framework platform, counter flange centre bore overlaps with framework platform central shaft hole; The second roll shaft that pulling-straightening roller has been equipped with to bearing is again put into platform central shaft hole, and bearing block lies in a horizontal plane on counter flange, transparent cover is placed in the detent on counter flange top, makes pulling-straightening roller end face steadily be located on counter flange; Bearing block lies in a horizontal plane on counter flange;
7) repeating step 2)～5) installation of the bearing assembly on the first roll shaft completed;
8) specialized wire rope is hung out the pulling-straightening roller that installs bearing assembly together.
On described bearing assembly, there are 6 bolts hole, when step 5) is connected and fixed water-cooled transparent cover, bearing block, transparent cover with bolt and nut, leaves two symmetrical bolts hole and do not fill bolt and nut, for lifting bolt is installed; When step 6) is sling pulling-straightening roller and swings to, lifting bolt is screwed into two symmetrical bolts hole, the lifting bolt end of thread screws on nut, specialized wire rope is hung in pulling-straightening roller on overhead traveling crane hook and completes and swing to by hanging over two secondary suspension ring on lifting bolt, finally lifting bolt is taken out, change assembling bolt nut and complete the bearing assembly installation on the second roll shaft.
When described step 7) and step 8) are connected and fixed water-cooled transparent cover, bearing block, transparent cover with bolt and nut, leave two symmetrical bolts hole and do not fill bolt and nut, for lifting bolt is installed; When pulling-straightening roller is sling, lifting bolt is screwed into two symmetrical bolts hole, specialized wire rope is hung in pulling-straightening roller on overhead traveling crane hook and completes and hang out by hanging over two secondary suspension ring on lifting bolt, finally lifting bolt is taken out, and changes assembling bolt nut and completes bearing assembly installation.
Described step 4) is placed on compression backing plate in pushes against sleeve after pushes against sleeve is enclosed within on the second roll shaft, restarts hydraulic ram cylinders, and the piston rod of plunger case stretches out to withstand and compresses backing plate plate, progressively bearing is depressed into axle sleeve step position.
Described axle sleeve and the axle of pulling-straightening roller are interference fits, by 150～200 ℃ of gas welding homogeneous heatings for axle sleeve, are contained on the axle of pulling-straightening roller, and cooling rear axle housing is held tightly on the axle of pulling-straightening roller.
Beneficial effect of the present invention is: by device of the present invention, mechanization at normal temperatures completes straightening (freedom) roller assembling process, bearing rubber seal is not caused to any damage, efficiency improves 5～10 times (depending on roller sizes), and assembly precision can reach drawing required precision.And saved the loaded down with trivial details and difficult links such as oil firing, hot bearing lifting, reached object simple to operate, efficient, environmental protection.Device of the present invention makes pulling-straightening roller assembling centering to be installed convenient, is specially adapted to assembling and the lifting of square billet straightening (freedom) roller.
After the logical cooling water of water-cooled transparent cover, sealing ring is had to cooling protection effect, compares metal expansion ring seale mode and there is advantage, can not occur stuck, destroy the fault of bearing block and pulling-straightening roller, and to adopt rubber seal, cold-pressing assembly is Reliable guarantee.
When has assembled pulling-straightening roller one end, reserve two symmetrical bolts hole, as two installation lifting bolts, then with steel wire rope, wear ring and vertically sling, safe reliable.
Accompanying drawing explanation
Fig. 1 is structural representation and one end assembling schematic diagram of apparatus of the present invention.
Fig. 2 is structural representation and the other end assembling schematic diagram of apparatus of the present invention.
Fig. 3 is the local enlarged diagram of the assembling of apparatus of the present invention.
Fig. 4 is apparatus of the present invention and assembling overall schematic.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, function of the present invention is described in further detail:
As Fig. 1,2,3,4: a kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device of the present invention comprises mechanical part and hydraulic control part, its mechanical part comprises frame leg 1, be arranged on the framework platform 2 on frame leg 1, there is the central shaft hole 2a of pulling-straightening roller location at framework platform 2 centers, the doorframe 3 erecting on framework platform 2, doorframe 3 place central planes and central shaft hole 2a dead in line, doorframe 3 top cross-bar are installed hydraulic ram cylinders 4, the piston rod 4a of hydraulic ram cylinders 4 is corresponding with central shaft hole 2a vertically downward, is furnished with pushes against sleeve 5.
On described framework platform 2, there is counter flange 7 at central shaft hole 2a place, and bearing assembly detent 7a is arranged at counter flange 7 tops.
Set pushes against sleeve 5 tops are established and are compressed backing plate 6.Compressing backing plate 6 thickness has each several piece of 10mm, 15mm, 25mm specification, required to meet stroke.
Hydraulic part comprises hydraulic ram cylinders 4, and hydraulic ram cylinders 4 is connected with Hydraulic Station 15 by hydraulic hose, and Hydraulic Station 15 is the portable standard universal type of dolly device.
Framework platform 2 is circular ring types, counter flange 7 is circular ring type, is movable detachable flange, is placed on framework platform 2, for adapting to the bearing block of all kinds of specifications, 5 specifications have been prepared, processing is simple, can process at any time as required, and its external diameter is than the little 10～20mm of doorframe 3 internal diameter, internal diameter is than the large 3～5mm of boss external diameter of transparent cover 13, after guaranteeing that pulling-straightening roller and bearing block are put on counter flange 7, pulling-straightening roller Zhou center is substantially moderate, only need finely tune with regard in adjusting.Counter flange 7 thickness according to guaranteeing bearing load and extruding force, determine by the indeformable experience of flange itself, is generally 16～25mm.
Plunger case 4 extend actions are for some dynamic formula, so that control decrement.
Described pushes against sleeve 5 selects suitable steel pipe to process, and length can be 150mm, 200mm, 250mm, 300mm, 350mm.The internal diameter of pushes against sleeve 5 is than the large 2mm of the internal diameter of bearing, and external diameter, than the little 2mm of the external diameter of bearing inner race, so not only facilitated and packs into smoothly on straightening roll shaft but also do not damage bearing block.
Described compression backing plate 6, its thickness and quantity are plunger case stroke difference and determining, cylindrical, external diameter is just more bigger than the external diameter of pushes against sleeve 5.
Described plunger case 4 strokes are 350mm, and maximum thrust 10000N enough meets the required thrust of assembling.Extend action is for some dynamic formula, so that control decrement; A whole set of Hydraulic Station 15 is dolly wheeled apparatus, and put at the scene of being convenient to.
During use, device is vertically placed on job platform.
Continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembly method of the present invention, step is as follows:
1) with overhead traveling crane, the first roll shaft 8a of pulling-straightening roller 8 is put into platform central shaft hole 2a, adjust pulling-straightening roller 8 positions, pulling-straightening roller 8 axis are overlapped substantially with platform central shaft hole 2a axis, pulling-straightening roller 8 end faces are steadily located on framework platform 2;
2) the water-cooled transparent cover 10 that installs rubber seal is assemblied in to the second roll shaft 8b above, water-cooled transparent cover 10 water flowing ends are pressed close to axle sleeve 9 steps;
3) bearing block 12 that bearing 11 is housed is assemblied on the second roll shaft, is placed in water-cooled transparent cover 10;
4) pushes against sleeve 5 is enclosed within to the second roll shaft 8b above, starts hydraulic ram cylinders 4, piston rod 4a stretches out and withstands pushes against sleeve 5, and pushes against sleeve 5 lower ends pushing bearing inner races, are progressively depressed into bearing 11 axle sleeve 9 step positions;
5) transparent cover 13 is put into the second roll shaft 8b, be positioned on bearing 11 and bearing block 12, with bolt and nut 14, water-cooled transparent cover 10, bearing block 12, transparent cover 13 are connected, the bearing assembly completing on the second roll shaft 8b is installed; As Fig. 1.
6) start overhead traveling crane, the first roll shaft 8a is winched to pulling-straightening roller 9 tops, counter flange 7 is placed on framework platform 2, counter flange 7 centre bores overlap with framework platform 2 central shaft hole 2a; Again the second roll shaft 8b that bearing is housed is put into platform central shaft hole 2a, bearing block 12 lies in a horizontal plane on counter flange 7, transparent cover 13 is placed in the detent 7a on counter flange 7 tops, and pulling-straightening roller 8 end faces are steadily located on counter flange 2; Bearing block 4 lies in a horizontal plane on counter flange 2;
7) repeating step 2)～5) installation of the bearing assembly on the first roll shaft 8a completed; As Fig. 2.
8) specialized wire rope is hung out the pulling-straightening roller that installs bearing assembly together.
On described bearing assembly, there are 6 bolts hole, when step 5) is connected and fixed water-cooled transparent cover 10, bearing block 12, transparent cover 13 with bolt and nut 14, leaves two symmetrical bolts hole and do not fill bolt and nut 14, for lifting; When step 6) is sling pulling-straightening roller 8 swing to, lifting bolt is screwed into two symmetrical bolts hole, the lifting bolt end of thread screws on nut, specialized wire rope is hung on lifting bolt and pulling-straightening roller 8 is hung on overhead traveling crane hook and completes and swing to by two secondary suspension ring, finally lifting bolt is taken out, change assembling bolt nut 14 and complete the bearing assembly installation on the second roll shaft 8b.
In like manner, when step 7) and step 8) are connected and fixed water-cooled transparent cover 10, bearing block 12, transparent cover 13 with bolt and nut 14, leave two symmetrical bolts hole and do not fill bolt and nut 14, for lifting; When pulling-straightening roller 8 is sling, lifting bolt is screwed into two symmetrical bolts hole, specialized wire rope is hung in pulling-straightening roller 8 on overhead traveling crane hook and completes and hang out by hanging over two secondary suspension ring on lifting bolt, finally lifting bolt is taken out, and changes assembling bolt nut 14 and completes bearing assembly installation.
Described step 4) is placed on pushes against sleeve 5 by compression backing plate 6 after pushes against sleeve 5 is enclosed within on the second roll shaft 8b, restarts hydraulic ram cylinders 4, and the piston rod 4a of plunger case 4 stretches out to withstand and compresses backing plate plate, progressively bearing 11 is depressed into axle sleeve 9 step positions.
Described axle sleeve 9 is interference fits with the axle of pulling-straightening roller 8, by 150～200 ℃ of axle sleeve 9 use gas welding homogeneous heatings, is contained on the axle of pulling-straightening roller 8, and cooling rear axle housing 9 is held tightly on the axle of pulling-straightening roller.
Described step 2) if water-cooled transparent cover 10 is too heavy manually removes motionlessly, can use the bolt and nut with suspension ring to be connected on the screw of water-cooled transparent cover 10, with overhead traveling crane, lift.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535038.4A CN103567745B (en) | 2013-11-01 | 2013-11-01 | A kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310535038.4A CN103567745B (en) | 2013-11-01 | 2013-11-01 | A kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device and assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103567745A true CN103567745A (en) | 2014-02-12 |
| CN103567745B CN103567745B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310535038.4A CN103567745B (en) | 2013-11-01 | 2013-11-01 | A kind of continuous casting of molten steel withdrawal straightening machine pulling-straightening roller assembling device and assembly method |
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| Country | Link |
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| CN (1) | CN103567745B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201026561Y (en) * | 2007-03-20 | 2008-02-27 | 永城煤电集团有限责任公司 | Hydraulic pressure type bearing disassembly and assembly machine for maintaining supporting roller |
| CN101176967A (en) * | 2007-12-10 | 2008-05-14 | 广州市嘉特斯机电制造有限公司 | Bearing press-in device and method of use thereof |
| KR20090004965U (en) * | 2007-11-20 | 2009-05-25 | 현대제철 주식회사 | Apparatus for changing Roller |
| CN202147124U (en) * | 2011-07-08 | 2012-02-22 | 上海超惠通风环保设备有限公司 | Bearing mounting device of integral type bearing box |
| CN102729029A (en) * | 2012-06-25 | 2012-10-17 | 山东合太恒科技股份有限公司 | Bearing press mounting device |
-
2013
- 2013-11-01 CN CN201310535038.4A patent/CN103567745B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201026561Y (en) * | 2007-03-20 | 2008-02-27 | 永城煤电集团有限责任公司 | Hydraulic pressure type bearing disassembly and assembly machine for maintaining supporting roller |
| KR20090004965U (en) * | 2007-11-20 | 2009-05-25 | 현대제철 주식회사 | Apparatus for changing Roller |
| CN101176967A (en) * | 2007-12-10 | 2008-05-14 | 广州市嘉特斯机电制造有限公司 | Bearing press-in device and method of use thereof |
| CN202147124U (en) * | 2011-07-08 | 2012-02-22 | 上海超惠通风环保设备有限公司 | Bearing mounting device of integral type bearing box |
| CN102729029A (en) * | 2012-06-25 | 2012-10-17 | 山东合太恒科技股份有限公司 | Bearing press mounting device |
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| Publication number | Publication date |
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| CN103567745B (en) | 2016-04-20 |
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