CN101486090A - Method for dismounting and replacing ladle turret revolving bearing - Google Patents
Method for dismounting and replacing ladle turret revolving bearing Download PDFInfo
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- CN101486090A CN101486090A CNA2009100245898A CN200910024589A CN101486090A CN 101486090 A CN101486090 A CN 101486090A CN A2009100245898 A CNA2009100245898 A CN A2009100245898A CN 200910024589 A CN200910024589 A CN 200910024589A CN 101486090 A CN101486090 A CN 101486090A
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Abstract
The invention aims to provide a method for disassembling a revolving bearing of a large-ladle revolving platform, which can quickly disassemble the revolving bearing and has higher safety, short construction period and lower construction cost. The method comprises the following steps: firstly, disassembling bolts which connect the prior revolving bearing inner race and a pedestal flange; secondly, filling a cushion block on the upper part of a connecting rod hole for a connecting rod to pass through on a box body, and making the upper part of the connecting rod contact the bottom of the cushion block; thirdly, using four jacks to synchronously lift four ladle arms, and making the prior revolving bearing and a revolving body above the prior revolving bearing move up for a certain distance together; fourthly, arranging a tray which is positioned on a guide rail under the prior revolving bearing; fifthly, disassembling bolts which connect the prior revolving bearing outer race and an upper revolving body, and making the prior revolving bearing fallen on the tray; sixthly, making the tray on the guide rail move in the radial direction along the revolving platform, and making the prior revolving bearing deviated from an axial line of the revolving platform; and seventhly, lifting away the prior revolving bearing.
Description
Technical field
The present invention relates to bale panoramic tables (old) floating bearing method for dismounting and floating bearing replacing method, belong to metallurgical machinery equipment installation field.
Background technology
The ladle turret of No. two conticasters in plum mountain is the two yokes of butterfly, by VAI design, the above gross weight 185t of floating bearing.This ladle turret is positioned at factory building 3. under the L row Crane Rail beam of the line of line-4., and the lifting position is extremely difficult.The set bolt of gear ring in use appears in ladle turret revolving bearing to be changed, and secondly is unloaded and load has the different sound of ", " shape when turning round, and the 3rd is the inordinate wear that occurs larger particles in the grease, and the largest particles reaches 5mm, the thickness 2.5mm that has; Conclude that according to above phenomenon damage has appearred in floating bearing, must change immediately.
Method with reference to bale panoramic tables installation in the past and maintenance.Domestic ladle turret floating bearing of the same type is changed, and it is 15 days that the method that adopts traditional shoulder pole girder to lift each parts of dismounting and installation is changed the floating bearing duration, and adopting outside three the manual fluid cylinder jacking revolving bodies of cylindrical shell to change the floating bearing duration is 7 days.
Summary of the invention
The purpose of this invention is to provide a kind of bale panoramic tables (old) floating bearing method for dismounting, it can remove floating bearing fast, and security is higher, and the duration is short, construction cost is lower.
Bale panoramic tables (old) floating bearing method for dismounting comprises the steps:
The disassembling bolts that a. will connect old floating bearing inner ring and base flange earlier;
B. cushion block is filled on the tie rod holes top that supplies connecting rod to pass on casing, makes connecting rod top contact with the cushion block bottom;
C. use four ladle arms of four jack synchronizations of jacking up, make the above revolving body of old floating bearing and the old floating bearing segment distance that moves up together;
D., the pallet that is positioned on the guide rail is set below old floating bearing;
The disassembling bolts that e. will connect old floating bearing outer ring and top revolving body makes old floating bearing drop on the pallet;
F. the pallet on the guide rail is moved radially along panoramic table, make old floating bearing leave the panoramic table axis;
G. hang old floating bearing.
As further improvement to the old floating bearing method for dismounting of above-mentioned bale panoramic tables, a in steps behind step a, before the step b
1: guide post is passed bolt hole on floating bearing inner ring and the base flange; E in steps behind step e, before the step f
1: take off guide post.
The present invention provides a kind of ladle turret revolving bearing replacing method simultaneously, and it can change floating bearing fast, and security is higher, and the duration is short, construction cost is lower.
This ladle turret revolving bearing replacing method is by above-mentioned method for dismounting old floating bearing to be removed earlier; Carry out following step again:
H. new floating bearing is placed on the pallet, moves radially pallet, make new floating bearing be positioned at the revolving body below along panoramic table;
I. connect new floating bearing outer ring and top revolving body with bolt;
J. remove pallet and guide rail;
K. unclamp the bolt that connects new floating bearing outer ring and top revolving body, allow floating bearing drop on the base flange;
L. connect floating bearing base inner ring and flange with bolt;
M. fall four jack synchronously after rise, make revolving body fall back on the floating bearing fully;
N. connect floating bearing outer ring and revolving body with bolt.
As floating bearing is changed further improvements in methods, i in steps after step I, before the step j
1: guide post is passed bolt hole on floating bearing inner ring and the base flange; K1 in steps behind step k, before the step l: take off guide post.
Beneficial effect of the present invention:
1. save the repair time, for the owner has created very good economic benefit.Domestic ladle turret floating bearing of the same type is changed, and it is 15 days that the method that adopts traditional shoulder pole girder to lift each parts of dismounting and installation is changed the floating bearing duration, is 4 days and adopt the method construction period, creates more than 4,000 ten thousand yuan of economic benefits more.With one one continuous casting line that machine is second-rate, the daily output is at 6000～7000t, and benefit per ton is by 800 yuan of calculations, thus much just imitates about 4320～5,040 ten thousand yuan [6000t/ days * 800 yuan/t * (15-4) day=43,200,000 yuan] for factory directly creates for one.
2. security reliability height.Adopt the hydraulic pressure sychronisation, remote-controlled operation, safe, synchronous, steady, laborsaving.
3. use face is big.All applicable in ladle turret floating bearing replacing of the same type, can in the same category of device construction, promote the use of.
Description of drawings
Horizontal layout schematic diagram when Fig. 1 is the floating bearing replacing
Facade when Fig. 2 is the floating bearing replacing is arranged schematic diagram (left view of Fig. 1)
Fig. 3 is support, jack installation site layout drawing
Fig. 4 is that revolving body leaves floating bearing upper surface schematic diagram
Fig. 5 is that the floating bearing lower surface leaves base flange face schematic diagram
Fig. 6 is that pallet and floating bearing are pulled out schematic diagram along guide rail.
Fig. 7 is that new floating bearing hangs schematic diagram on the pallet
Fig. 8 is a cushion block installation site schematic diagram
Fig. 9 is the schematic diagram of connecting rod, casing, cushion block relation
Figure 10 is the vertical view of Fig. 9
The specific embodiment
The ladle turret of No. two conticasters in plum mountain is the two yokes of butterfly, by VAI design, the above gross weight 185t of floating bearing.This ladle turret is positioned at factory building 3. under the L row Crane Rail beam of the line of line-4., and the lifting position is extremely difficult.The set bolt of gear ring in use appears in ladle turret revolving bearing to be changed, and secondly is unloaded and load has the different sound of ", " shape when turning round, and the 3rd is the inordinate wear that occurs larger particles in the grease, and the largest particles reaches 5mm, the thickness 2.5mm that has; Conclude that according to above phenomenon damage has appearred in floating bearing, must change immediately.
Prepare relevant instrument, equipment:
1. use I-steel making two supports (5050 * 1000 * 3050) of 600 * 300 in advance,, will lay diamond plate on the support, be beneficial to the workmen and operate jack in order to set up jack and various protective cradles are installed.
2. make 6 of rail rests with H shaped steel (400 * 300) and 16# channel-section steel, high about 0.75-1.2 meters, length is determined according to the scene, make two guide rails with rail (43Kg/m), about 15 meters of every length welds together with support at the scene during maintenance, and guarantees to stablize.The height at guide rail top is than the high 10-20mm of flange upper surface of bale panoramic tables base;
3. make the pallet (4.1 meters * 3 meters) of an inferior font of the 10# channel-section steel;
4. four of the jacking bale panoramic tables jack and sychronisation are prepared to put in place; The hydraulic spanner that the ladle turret revolving bearing pretension is used is prepared to put in place, and the pull bar of ladle turret and various backing plate are prepared to put in place;
5. prepare wide 1.2 meters, 4 on long 5.2 meters steel billet; Wide 1.2m, length surpasses 3 on the steel billet of 7m.
6. make eight on the backing plate of 230 * 150 * 260mm, other prepares 230 * 200 * 18 (20,25) mm, and gradient is each 8 of the taper liner plates of 1:50.
7. make each 4 of safeguard protection seat and guiding steel plates, each 8 on protection backing plate 400 * 300 * 50 (30,20,10).
Operational procedure:
1. baffle and the portion ground of removing the Da Bao bottom in advance divide floor tile, abdicate the position for the installation of the in place and support of slab.
2. bale panoramic tables south-north direction, protectiveness is removed the clad on the ladle arms.
3. move the chute that overflows to enough spaces.Referring to Fig. 1-3, on east, the both sides, west of bale panoramic tables, each lays the two boards base, puts 7 meters long slabs 1 more in the above, and its M.E is distributed on big package base and the platform, prevents that support from directly acting on the top of casting platform.The gap of slab and platform pads with steel plate, and plate 1 base with several overlappings welds together simultaneously, prevents slippage.
4. referring to Fig. 1-3, bale panoramic tables is parked in North and South direction, utilizes the 10t electric hoist under 125t driving and the L row to cooperate, two supports 2 are put on the steel billet 1 that east-west direction put well, welding support and steel billet, and east-west direction adds bearing diagonal 3, make support steadily, safety, reliable.
5. 90 ° of big bag revolutions make ladle arms towards east-west direction, pull down A, B arm hoist cylinder baffle.
6. the ladle arms lifting is to the centre position, the shutoff operation switch.
7. four guiding steel plates 15 of welding revoliving arm lifting on steel bracket and the reinforcement of weld plate of ladle arms bottom, and on steel bracket.
8. reserve the installation site of jack, by support 2 inboards a safeguard protection seat 4 being installed respectively, when jacking four ladle arms are supported, it is unexpected to prevent that jack from occurring.Safeguard protection seat bottom surface will weld together with support, and height must not surpass 350mm.
9. referring to Fig. 8-10, cushion block 18 is filled on the tie rod holes top of passing for connecting rod 17 on casing 16, makes connecting rod top contact bottom cushion block, and carries out fixation, prevents that cushion block 18 moves when stressed.
10. remove various wiring, electric slip ring, swivel coupling, rotary support, slewing limit switch and the base of electrical equipment, remove the lubrication piping on the floating bearing.
11. two hoist cylinder protections are lived with jack.
12. remove hydraulic contracting and drive unit, remove the rotary encoder base, must perform mark when noting removing.
13. with 10 tons of electric hoists four jack 5 are put on the support, according to highly having added backing plate and fixed, four ladle arms 6 that rising jack, four jack will wrap are greatly simultaneously withstood.Unload the bolt of ladle turret revolving bearing outer ring simultaneously with hydraulic spanner or fork spanner, amount to 120 covers.
14. in the bolt of removing the floating bearing outer ring, also the arrangement personnel remove the bolt of floating bearing inner ring, amount to 96 covers (uniform 12 covers that stay are not temporarily torn open).
15. the jacking of jack must the special messenger be commanded, and is assigned the signal of operation to the jack operating personnel by the special messenger commanding of appointment.The observer will observe the rising situation (measuring the height of jacking with Steel Ruler) of revolving body and the working condition of jack at any time, has abnormal conditions in time to report to the commanding.Referring to Fig. 3,4, after the commanding assigns signal for the jack operating personnel, utilize slowly four jack of jacking simultaneously of sychronisation, when leaving 10mm, revolving body 11 and floating bearing 7 stop jacking; And on four safeguard protection bearings 4, respectively add one 400 * 300 * 10 the protection backing plate.
16. 12 bolt complete removals that the floating bearing inner ring is stayed connect together floating bearing and revolving body with four or six bolts; Floating bearing 7 is separated with base flange 8; Simultaneously at middle uniform 8 guide posts 12 of installing in floating bearing inner bolt hole and panoramic table base flange hole, referring to Fig. 5.
Two people 17. respectively stand in each angle (pincers worker, each 1 people of a heavy industry), under the special messenger commander, the while is four jack of jacking slowly, observe the distance that hoists of rotary body and floating bearing, guarantee that the lifting altitude of four jack is consistent; In the rising jack, on the safeguard protection seat, progressively increase the steel plate protection backing plate of different-thickness, along with the backing plate on the rising safeguard protection seat of jack also raises synchronously; When distance is for 90-100mm between floating bearing bottom surface and the base flange, stop jacking,, on the safeguard protection seat, add last block plate protection backing plate referring to Fig. 5.Fall some jack then after rise and allow four arms be pressed on the safeguard protection seat board, pressure release do not wanted by jack and bearing withstands ladle arms together; To reach the effect of dual fail-safe.
18. it is two guide rails 13 are put into the ladle turret base flange outside, and temporary fixed; The spacing of two guide rails will with the span the same (4.1 meters) of two chutes on the inferior shaped pallet 14; Smear drier oil on the guide rail, inferior shaped pallet is placed on shifts the floating bearing below on the guide rail onto;
19. unclamp the bolt that floating bearing is connected with revolving body, make the revolving body flange 8 on floating bearing 7 outer rings and floating bearing top break away from, referring to Fig. 7, allow floating bearing 7 fall on the pallet 14; Take out guide post 12, pallet and floating bearing are dragged to together the other end of guide rail along guide rail with jack; And on pallet, carry out the position mark of floating bearing soft spots and bolt hole, with the 125t driving old floating bearing is hung away (referring to Fig. 6) then.
20. measure the levelness of panoramic table base flange, and butt welded seam carries out Non-Destructive Testing,
21., new floating bearing is hung on the pallet 14 with the 125t driving referring to Fig. 6, to note the position of floating bearing inner ring soft spots is put in the east, the position of outer ring soft spots is put into the south (non-bearing district); Aimed at mark, new floating bearing has been dragged to ladle revolving body base top with jack.
22. confirm the position of the bolt hole of new floating bearing and revolving body, new floating bearing and revolving body connected together with four connecting bolts; Remove pallet and guide rail; Unclamp connecting bolt, allow the floating bearing screw aim at, floating bearing is dropped on the base flange with the base flange face.
23.5.23 check contact plane between floating bearing and the base flange face with clearance gauge, must guarantee that contact is well very close to each other.The connecting bolt (inner ring) that connects floating bearing and base, according to the order of diagonal angle symmetry successively with 40% (pressure 542Bar) of pretightning force bolt pretension one time, and then with whole pretightning forces (pressure 1354Bar) bolted;
24. hold the levelness of upper surface with precision level and Ling Jingjian survey time rotating shaft, and keep a record.
25. in the bolt hole of floating bearing bolt hole and panoramic table base, guide post is installed; 14 jack of jacking takes out the uppermost backing plate of safeguard protection seat a little, slowly falls jack then synchronously after rise; When ladle arms touch-safe protection soon seat, just a backing plate above the bearing is taken out;
26. revolving body falling back to fully on the floating bearing slowly; Check contact plane between floating bearing and the revolving body flange face with clearance gauge, must guarantee that contact is well very close to each other.The connecting bolt (outer ring) that connects floating bearing and revolving body, according to the order of diagonal angle symmetry successively with 40% (pressure 542Bar) of pretightning force bolt pretension one time, and then with whole pretightning forces (pressure 1354Bar) bolted;
27. take off four jack, cut off guiding steel plate and safeguard protection seat on each support.
28. return dress drive unit and hydraulic contracting;
29. return dress swivel joint and support and electric slip ring, medium flexible pipe on time dress swivel joint and the lubrication piping on cable, appliance wiring and the floating bearing on the electric slip ring, slewing limit switch and base;
30. the condition of, hydraulic pressure lubricated by the test run confirmation request, electric, instrument and machinery is checked and accepted outline according to the test run of ladle turret, carries out monomer and interlock test run (ladle arms can not lifting).
Claims (4)
1. ladle turret revolving bearing method for dismounting, it is characterized in that: it comprises the steps:
The disassembling bolts that a. will connect old floating bearing inner ring and base flange earlier;
B. cushion block is filled on the tie rod holes top that supplies connecting rod to pass on casing, makes connecting rod top contact with the cushion block bottom;
C. use four ladle arms of four jack synchronizations of jacking up, make the above revolving body of old floating bearing and the old floating bearing segment distance that moves up together;
D., the pallet that is positioned on the guide rail is set below old floating bearing;
The disassembling bolts that e. will connect old floating bearing outer ring and top revolving body makes old floating bearing drop on the pallet;
F. the pallet on the guide rail is moved radially along panoramic table, make old floating bearing leave the panoramic table axis;
G. hang old floating bearing.
2. method according to claim 1 is characterized in that:
A in steps behind step a, before the step b
1: guide post is passed bolt hole on floating bearing inner ring and the base flange;
E in steps behind step e, before the step f
1: take off guide post.
3. ladle turret revolving bearing replacing method is characterized in that: by the described method of claim 1 old floating bearing is removed earlier; Carry out following step again:
H. new floating bearing is placed on the pallet, moves radially pallet, make new floating bearing be positioned at the revolving body below along panoramic table;
I. connect new floating bearing outer ring and top revolving body with bolt;
J. remove pallet and guide rail;
K. unclamp the bolt that connects new floating bearing outer ring and top revolving body, allow floating bearing drop on the base flange;
L. connect floating bearing base inner ring and flange with bolt;
M. fall four jack synchronously after rise, make revolving body fall back on the floating bearing fully;
N. connect floating bearing outer ring and revolving body with bolt.
4. method according to claim 3 is characterized in that:
I in steps after step I, before the step j
1: guide post is passed bolt hole on floating bearing inner ring and the base flange;
K in steps behind step k, before the step 1
1: take off guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100245898A CN101486090A (en) | 2009-02-20 | 2009-02-20 | Method for dismounting and replacing ladle turret revolving bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100245898A CN101486090A (en) | 2009-02-20 | 2009-02-20 | Method for dismounting and replacing ladle turret revolving bearing |
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| CN101486090A true CN101486090A (en) | 2009-07-22 |
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|---|---|---|---|
| CNA2009100245898A Pending CN101486090A (en) | 2009-02-20 | 2009-02-20 | Method for dismounting and replacing ladle turret revolving bearing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949603A (en) * | 2014-05-09 | 2014-07-30 | 武汉钢铁(集团)公司 | Monitoring system for large ladle turret of continuous casting machine |
| CN107097062A (en) * | 2017-06-05 | 2017-08-29 | 莱芜钢铁集团有限公司 | A kind of stacker-reclaimer revolution intersects the replacing options of bearing |
| CN107322254A (en) * | 2017-06-30 | 2017-11-07 | 上海二十冶建设有限公司 | A kind of quick change method of continuous casting machine revolving platform floating bearing |
| CN108500251A (en) * | 2018-06-28 | 2018-09-07 | 五冶集团上海有限公司 | The method for replacing sliding bearing in continuous casting machine revolving platform weighing arm support shaft |
| CN109622932A (en) * | 2017-10-09 | 2019-04-16 | 上海宝冶集团有限公司 | The quick change method of large-scale continuous casting ladle turret floating bearing |
| CN109622933A (en) * | 2019-01-30 | 2019-04-16 | 上海二十冶建设有限公司 | The method of continuous casting machine revolving platform top equipment monolithic hoisting replacement floating bearing |
| CN113894526A (en) * | 2021-10-30 | 2022-01-07 | 江阴怡源设备安装有限公司 | Method and equipment for quickly replacing slewing bearing of stock yard stacker-reclaimer |
| CN113955663A (en) * | 2021-09-30 | 2022-01-21 | 上海二十冶建设有限公司 | Method for horizontally pushing and integrally jacking upper revolving body of bale revolving platform in place |
-
2009
- 2009-02-20 CN CNA2009100245898A patent/CN101486090A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949603B (en) * | 2014-05-09 | 2016-03-30 | 武汉钢铁(集团)公司 | A kind of continuous casting machine revolving platform monitoring system |
| CN103949603A (en) * | 2014-05-09 | 2014-07-30 | 武汉钢铁(集团)公司 | Monitoring system for large ladle turret of continuous casting machine |
| CN107097062A (en) * | 2017-06-05 | 2017-08-29 | 莱芜钢铁集团有限公司 | A kind of stacker-reclaimer revolution intersects the replacing options of bearing |
| CN107097062B (en) * | 2017-06-05 | 2019-06-28 | 莱芜钢铁集团有限公司 | A kind of stacker-reclaimer revolution intersects the replacing options of bearing |
| CN107322254A (en) * | 2017-06-30 | 2017-11-07 | 上海二十冶建设有限公司 | A kind of quick change method of continuous casting machine revolving platform floating bearing |
| CN109622932B (en) * | 2017-10-09 | 2020-07-28 | 上海宝冶集团有限公司 | Method for quickly replacing rotary bearing of large continuous casting ladle turret |
| CN109622932A (en) * | 2017-10-09 | 2019-04-16 | 上海宝冶集团有限公司 | The quick change method of large-scale continuous casting ladle turret floating bearing |
| CN108500251A (en) * | 2018-06-28 | 2018-09-07 | 五冶集团上海有限公司 | The method for replacing sliding bearing in continuous casting machine revolving platform weighing arm support shaft |
| CN109622933A (en) * | 2019-01-30 | 2019-04-16 | 上海二十冶建设有限公司 | The method of continuous casting machine revolving platform top equipment monolithic hoisting replacement floating bearing |
| CN109622933B (en) * | 2019-01-30 | 2021-01-19 | 上海二十冶建设有限公司 | Method for replacing slewing bearing of integral hoisting of equipment at upper part of ladle turret of continuous casting machine |
| CN113955663A (en) * | 2021-09-30 | 2022-01-21 | 上海二十冶建设有限公司 | Method for horizontally pushing and integrally jacking upper revolving body of bale revolving platform in place |
| CN113955663B (en) * | 2021-09-30 | 2023-08-25 | 上海二十冶建设有限公司 | Method for horizontally pushing and integrally jacking upper revolving body of ladle turret to be in position |
| CN113894526A (en) * | 2021-10-30 | 2022-01-07 | 江阴怡源设备安装有限公司 | Method and equipment for quickly replacing slewing bearing of stock yard stacker-reclaimer |
| CN113894526B (en) * | 2021-10-30 | 2023-07-21 | 江阴怡源设备安装有限公司 | Quick replacement method and equipment for slewing bearing of stock yard stacker-reclaimer |
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Open date: 20090722 |