CN105236320A - Jacking device for replacing saddle arm of rotating bearing of continuous casting rotating table and construction method of jacking device - Google Patents
Jacking device for replacing saddle arm of rotating bearing of continuous casting rotating table and construction method of jacking device Download PDFInfo
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- CN105236320A CN105236320A CN201510714018.2A CN201510714018A CN105236320A CN 105236320 A CN105236320 A CN 105236320A CN 201510714018 A CN201510714018 A CN 201510714018A CN 105236320 A CN105236320 A CN 105236320A
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- saddle arm
- rotary table
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Abstract
The invention relates to a jacking device for replacing a saddle arm of a rotating bearing of a continuous casting rotating table and a construction method of the jacking device. The method includes the steps that a saddle arm supporting device is arranged, four hydraulic jacks of the same model are placed at the corresponding positions of the saddle arm, the hydraulic jacks are started, the lifting heights keep consistent, and jacking is performed in segments till the rotating bearing can transversely move and will not make any contact with a rotating table body; after the bearing is slowly pulled to a bearing transverse movement support through a chain block, a new bearing is allocated and transported to the bearing transverse movement support; after a collecting and guiding rail of the new bearing is pulled into a base and centered, the bearing is lifted, an erected steel pipe is detached, and the bearing is totally in place; and a body falls back; a saddle arm supporting system is detached, a hydraulic jacking system is detached, and the transverse movement support is detached. According to the jacking device, the whole rotating table body does not need to be hoisted away, the hydraulic synchronous jacking technology is adopted, and transverse replacement of the rotating large bearing is achieved; and the whole device is made of common steel materials, and cost is low.
Description
Technical field
The invention belongs to metallurgical industry technical field of steel production, particularly relate to a kind of continuous casting turret revolving bearing and change saddle arm jacking apparatus and construction method thereof.
Background technology
In steel casting process, rotary table be arranged on conticaster workshop ladle accept across and casting across between casting platform up train beam just issue, for accepting, supporting by the ladle of crane for hoisting to continuous casting workshop, and by the rotation of equipment, lifting mechanism, ladle is rotated 180 °, go to casting position and cast.And the large bearing that rotary table is rotated its have three row rollers, can bear and transmit vertical load, horizontal loading and tilting moment, inner ring connects with base high strength bolt, and outer shroud (band gear ring) is connected with gyro-rotor with high strength bolt, and diameter is greater than 4m.Swing bearing, rotary table body, rotary table base are the keystone configurations of rotary table.In process of production owing to safeguarding that improper or improper use causes rotary table bearing loss, the swing bearing of initiation is changed operation and is belonged to dangerous larger part-to-item project; Rotary table body generally weighs more than 200 ton, and it hangs and just can carry out swing bearing replacing afterwards.
Part steel mill considers the replacing of bearing at home, can prepare special suspender in advance.The twin spans mode lifted of driving a vehicle is adopted to change.And the prediction scheme that some steel mill does not have swing bearing special project to change and Disposal Measures, the loss caused that stops production will be caused and be difficult to bear concerning enterprise.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of continuous casting turret revolving bearing and changes saddle arm jacking apparatus and construction method thereof, solves and does not have hoisting tool special but must carry out the problem of swing bearing replacing.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of continuous casting turret revolving bearing to change saddle arm jacking apparatus, comprise saddle arm bracing or strutting arrangement, hydraulic jacking device and bearing transverse moving support, wherein said saddle arm bracing or strutting arrangement comprises steel structure load-bearing bearing under rotary table saddle arm and rotary table internal rigid reinforcing member, described steel structure load-bearing bearing is that shaped steel intersecting parallels is superimposed to immediately below saddle arm, and and leave certain interval between saddle arm, for placing hydraulic jack, described hydraulic jacking device comprises the hydraulic jack of 4 same size models, for synchronous control system and the cushion block of hydraulic control jack, described bearing transverse moving support scaffolding height is a little less than rotary table base, width is identical with bearing diameter, prolongation distance is greater than the position across the nearly beam-ends maximal work of interior installed driving, described bearing transverse moving support upper surface installs steel pipe, as the track of bearing slippage.
Described rotary table internal rigid reinforcing member is that some solid drawn pipes are welded to saddle arm back timber, for limit saddle arm to top offset, make twisted branch structure become rigid construction.
Described type steel model is 400H.
Described rotary table internal rigid reinforcing member is that the solid drawn pipe of 4 D273*12 is welded to saddle arm back timber.
Described cushion block is 400*400mm, height 50mm.
Described steel pipe model is D32.
Described a kind of continuous casting turret revolving bearing is used to change a construction method for saddle arm jacking apparatus, comprising the following step:
A () arranges saddle arm bracing or strutting arrangement: rotary table is turned to holding fix, according to load-bearing demand, shaped steel intersecting parallels is overlapped on immediately below saddle arm, the horizontal deflection of the upper surface of this load-bearing bearing is no more than 2mm, the rigidity of rotary table inside is reinforced, adopt the twisted branch displacement of steel-pipe welding locking saddle arm, bearing transverse moving support is set simultaneously;
B (), by the hydraulic jack of 4 same model, is placed on 4 corresponding positions of saddle arm, adopt step control, and arrange cushion block at hydraulic jack top margin, and cushion block adopts 400*400mm, contacts with saddle arm bottom surface;
C () starts hydraulic jack, observe the body range of lift of each jack locality, keep lifting altitude consistent, segmentation hoists, and hoist 50mm at every turn, carries out single hydraulic jack be adjusted to same lifting altitude to there being deviation, install 50mm cushion block additional, according to said method reciprocating operation, until swing bearing can implement transverse shifting, can not have any contact with rotary table body;
D () adopts jack slowly to be pulled by bearing to bearing transverse moving support, hung away by old bearing, and allocate and transport new bearing to bearing transverse moving support with driving;
E () sets up three steel pipes and rotary table base, connect approach rail road as new bearing, is drawn into after base centering completes, promotes bearing, remove the steel pipe set up, the complete dropping place of bearing;
F () falls body after rise, take segmentation to land equally, removes cushion block, each dropping distance 50mm, and the actual decline displacement observing each jack place, to deviation, place operates jack adjustment separately, keep whole body to be in level steadily to decline state, until completely in place;
G () removes saddle arm bracing or strutting arrangement, remove hydraulic jacking device, removes transverse moving support.
In described step (a), described type steel model is 400H, and described steel pipe model is D273.
Beneficial effect
The present invention has the following advantages:
1, whole device utilizes common steel material to make, with low cost;
2, do not need to hang whole rotary table body, adopt hydraulic synchronization lifting technology, realize laterally changing large rotating bearing;
3, the method can not have to implement when special hanger in any steel mill, significantly can reduce the stopping production risk that swing bearing fault producer occurs.
Accompanying drawing explanation
Fig. 1 is rotary table schematic diagram;
Fig. 2 is rotary table bracing or strutting arrangement schematic diagram;
Fig. 3 is saddle arm jacking apparatus plan sketch.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
With this body weight of continuous casting rotary table 224 tons, the bearing replacing of the direct 4325mm of bearing is example, as follows:
As shown in Figures 1 to 3, a kind of continuous casting turret revolving bearing replacing saddle arm jacking apparatus comprises saddle arm bracing or strutting arrangement 1, hydraulic jacking device 2, bearing transverse moving support 3.
Described saddle arm bracing or strutting arrangement 1 comprises steel structure load-bearing bearing 4 under rotary table saddle arm 6 and rotary table internal rigid reinforcing member 5, steel structure load-bearing bearing 4 adopts 400H shaped steel intersecting parallels to be superimposed to immediately below saddle arm 6, and leave the gap of placing hydraulic jack 11 between steel structure load-bearing bearing 4 and saddle arm 6, rotary table internal rigid reinforcing member 5 adopts the solid drawn pipe of 4 D273*12, be welded to saddle arm back timber, restriction saddle arm to top offset, make twisted branch structure become rigid construction.
Described hydraulic jacking device 2 comprises the 200T hydraulic actuating cylinder of 4 same size models, synchronous control system, cushion block 400*400, height 50mm and some other models, quantity about 100.
Described bearing transverse moving support 3 scaffolding height is a little less than rotary table base 7, width is identical with bearing 8 diameter, prolongation distance is greater than the position across the nearly beam-ends maximal work of interior installed driving, and described rack upper surface installs the steel pipe 9 of D32, as the track of bearing slippage.
Continuous casting turret revolving bearing changes a construction method for saddle arm jacking apparatus, is specially following steps:
The first step, saddle arm support system is set: rotary table is turned to holding fix, according to load-bearing demand, 400H shaped steel intersecting parallels is overlapped on immediately below saddle arm 6, the horizontal deflection of the upper surface of this load-bearing bearing should more than 2mm, the rigidity of rotary table inside is reinforced, and adopts the twisted branch displacement of D273 steel-pipe welding locking saddle arm.Bearing transverse moving support is set simultaneously;
Second step, by the hydraulic jack 11 of 4 same model, is placed on 4 corresponding positions of saddle arm, adopts step control, and arranges cushion block at hydraulic jack top margin, and cushion block adopts 400*400, contacts with saddle arm 6 bottom surface;
3rd step, start hydraulic jack 11, observe the body range of lift of each jack locality, keep lifting altitude consistent, segmentation hoists, hoist 50mm at every turn, carry out single hydraulic jack to there being deviation and be adjusted to same lifting altitude, install 50mm cushion block additional, according to said method reciprocating operation, until large rotating bearing can implement transverse shifting, any contact can not be had with rotary table body 10;
4th step, adopts jack slowly to be pulled to transverse moving support 3 by bearing 8, is hung away by old bearing, and allocate and transport new bearing to bearing transverse moving support 3 with driving;
5th step, sets up three steel pipes and rotary table base, connects approach rail road as new bearing.Be drawn into after base centering completes, promote bearing, remove the steel pipe set up.The complete dropping place of bearing;
6th step, falls body 10 after rise, takes segmentation to land equally, remove cushion block, each dropping distance 50mm, and the actual decline displacement observing each jack place, to deviation, place operates jack adjustment separately, keeps whole body to be in level and steadily to decline state, until completely in place;
7th step, removes saddle arm bracing or strutting arrangement 1, removes hydraulic jacking device 2, remove transverse moving support 3.
Claims (8)
1. a continuous casting turret revolving bearing changes saddle arm jacking apparatus, comprise saddle arm bracing or strutting arrangement (1), hydraulic jacking device (2) and bearing transverse moving support (3), it is characterized in that: described saddle arm bracing or strutting arrangement (1) comprises steel structure load-bearing bearing (4) under rotary table saddle arm (6) and rotary table internal rigid reinforcing member (5), described steel structure load-bearing bearing (4) is superimposed to immediately below saddle arm (6) for shaped steel intersecting parallels, and and leave certain interval between saddle arm (6), for placing hydraulic jack (11), described hydraulic jacking device (2) comprises the hydraulic jack (11) of 4 same size models, for synchronous control system and the cushion block of hydraulic control jack (11), described bearing transverse moving support (3) scaffolding height is a little less than rotary table base (7), width is identical with bearing (8) diameter, prolongation distance is greater than the position across the nearly beam-ends maximal work of interior installed driving, described bearing transverse moving support (3) upper surface installs steel pipe (9), as the track of bearing slippage.
2. a kind of continuous casting turret revolving bearing according to claim 1 changes saddle arm jacking apparatus, it is characterized in that: described rotary table internal rigid reinforcing member (5) is welded to saddle arm back timber for some solid drawn pipes, for limit saddle arm to top offset, make twisted branch structure become rigid construction.
3. a kind of continuous casting turret revolving bearing according to claim 1 changes saddle arm jacking apparatus, it is characterized in that: described type steel model is 400H.
4. a kind of continuous casting turret revolving bearing according to claim 1 changes saddle arm jacking apparatus, it is characterized in that: described rotary table internal rigid reinforcing member (5) is that the solid drawn pipe of 4 D273*12 is welded to saddle arm back timber.
5. a kind of continuous casting turret revolving bearing according to claim 1 changes saddle arm jacking apparatus, it is characterized in that: described cushion block is 400*400mm, height 50mm.
6. a kind of continuous casting turret revolving bearing according to claim 1 changes saddle arm jacking apparatus, it is characterized in that: described steel pipe (9) model is D32.
7. use a kind of continuous casting turret revolving bearing as claimed in claim 1 to change a construction method for saddle arm jacking apparatus, it is characterized in that, comprise the following steps:
A () arranges saddle arm (6) bracing or strutting arrangement: rotary table is turned to holding fix, according to load-bearing demand, shaped steel intersecting parallels is overlapped on immediately below saddle arm (6), the horizontal deflection of the upper surface of this load-bearing bearing is no more than 2mm, rotary table internal rigid is reinforced, adopt the twisted branch displacement of steel-pipe welding locking saddle arm (6), bearing transverse moving support (3) is set simultaneously;
B () is by the hydraulic jack (11) of 4 same model, be placed on the corresponding position of 4 saddle arms (6), adopt step control, and cushion block is set at hydraulic jack (11) top margin, cushion block adopts 400*400mm, contacts with saddle arm (6) bottom surface;
C () starts hydraulic jack (11), observe body (10) range of lift of each jack locality, keep lifting altitude consistent, segmentation hoists, and hoist 50mm at every turn, carries out single hydraulic jack be adjusted to same lifting altitude to there being deviation, install 50mm cushion block additional, according to said method reciprocating operation, until swing bearing (8) can implement transverse shifting, can not have any contact with rotary table body (10);
D () adopts jack slowly to be pulled to bearing transverse moving support (3) by bearing (8), hung away by old bearing, and allocate and transport new bearing to bearing transverse moving support (3) with driving;
E () sets up three steel pipes and rotary table base, connect approach rail road as new bearing, is drawn into after base centering completes, promotes bearing, remove the steel pipe set up, the complete dropping place of bearing;
F () falls body (10) after rise, segmentation is taked to land equally, remove cushion block, each dropping distance 50mm, and observe the actual decline displacement at each jack place, to deviation, place operates jack adjustment separately, keeps whole body to be in level and steadily to decline state, until completely in place;
G () removes saddle arm bracing or strutting arrangement (1), remove hydraulic jacking device (2), removes transverse moving support (3).
8. a kind of construction method using a kind of continuous casting turret revolving bearing replacing saddle arm jacking apparatus as claimed in claim 1 according to claim 7, it is characterized in that: in described step (a), described type steel model is 400H, and described steel pipe model is D273.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714018.2A CN105236320A (en) | 2015-10-28 | 2015-10-28 | Jacking device for replacing saddle arm of rotating bearing of continuous casting rotating table and construction method of jacking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714018.2A CN105236320A (en) | 2015-10-28 | 2015-10-28 | Jacking device for replacing saddle arm of rotating bearing of continuous casting rotating table and construction method of jacking device |
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| CN105236320A true CN105236320A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510714018.2A Pending CN105236320A (en) | 2015-10-28 | 2015-10-28 | Jacking device for replacing saddle arm of rotating bearing of continuous casting rotating table and construction method of jacking device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290356A (en) * | 2021-04-01 | 2021-08-24 | 上海二十冶建设有限公司 | Method for replacing screw-down module of vertical continuous casting machine by adopting reverse jacking device |
| 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 |
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| US4951386A (en) * | 1988-09-08 | 1990-08-28 | Mazda Motor Corporation | Apparatus for disassembling bearing caps and assembling metals |
| CN201109020Y (en) * | 2007-08-27 | 2008-09-03 | 上海梅山钢铁股份有限公司 | Revolving bearing replacing mechanism for disk bale traverse platform |
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| CN201552543U (en) * | 2009-10-29 | 2010-08-18 | 上海梅山钢铁股份有限公司 | Joint bearing disassembly and assembly tool |
| CN102513812A (en) * | 2011-12-06 | 2012-06-27 | 中国神华能源股份有限公司 | Bearing detaching device, bearing detaching method and bearing installation method |
| CN103341722A (en) * | 2013-06-28 | 2013-10-09 | 中国一冶集团有限公司 | Method for replacing bearing of large ladle turret |
| CN205099290U (en) * | 2015-10-28 | 2016-03-23 | 上海十三冶建设有限公司 | Saddle arm jacking device is changed to continuous casting revolving platform floating bearing |
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2015
- 2015-10-28 CN CN201510714018.2A patent/CN105236320A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4951386A (en) * | 1988-09-08 | 1990-08-28 | Mazda Motor Corporation | Apparatus for disassembling bearing caps and assembling metals |
| CN201109020Y (en) * | 2007-08-27 | 2008-09-03 | 上海梅山钢铁股份有限公司 | Revolving bearing replacing mechanism for disk bale traverse platform |
| CN101269462A (en) * | 2008-05-09 | 2008-09-24 | 中国第二冶金建设有限责任公司 | Method for quickly replacing pivotal bearing of bale panoramic tables |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290356A (en) * | 2021-04-01 | 2021-08-24 | 上海二十冶建设有限公司 | Method for replacing screw-down module of vertical continuous casting machine by adopting reverse jacking device |
| 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 |
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Application publication date: 20160113 |
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| RJ01 | Rejection of invention patent application after publication |