CN102764766B - Reconstruction method for adding rolling mill on existing rolling line - Google Patents
Reconstruction method for adding rolling mill on existing rolling line Download PDFInfo
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- CN102764766B CN102764766B CN201210269349.6A CN201210269349A CN102764766B CN 102764766 B CN102764766 B CN 102764766B CN 201210269349 A CN201210269349 A CN 201210269349A CN 102764766 B CN102764766 B CN 102764766B
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Abstract
The invention discloses a reconstruction method for adding a rolling mill on an existing rolling line. By the aid of the reconstruction method, the downtime can be shortened. The reconstruction method comprises that an old roller way in a new rolling mill area is removed, and then a temporary roller way is arranged at the position; a rolling mill foundation is constructed under the temporary roller way; and a push foundation and a push railway which is located on the push foundation are arranged in a construction area outside the rolling line, the push railway extends to the rolling mill foundation, the rolling mill is assembled on the push railway, then the rolling mill is pushed onto the rolling mill foundation by a push device, a reinforcing foundation of a rolling mill rack is constructed and fixed after the rolling mill is in place, then the push foundation serves as a foundation construction roller changing device foundation, and finally installation and piping of a roller changing device are finished. By the aid of the method, the downtime caused by reconstruction can be shortened greatly, and the method is significant in economic benefit and social benefit and is mainly applied to reconstruction of the existing rolling line by adding the rolling mill.
Description
Technical field
The present invention relates to a kind of roll line remodeling method, especially a kind of existing roll line is set up the remodeling method of milling train.
Background technology
At present, for the rolling line of producing for many years, increase the transformation of milling train unit, conventionally can require to shorten the off-time as far as possible, to reduce the production loss of factory.
The rolling line reforming mode of conventional increase milling train unit is: comprehensive transformation that stops production, and shorten as far as possible and transform needed man-hour to shorten the off-time.Its technological process is: stopping production → part laminar flow roller-way dismounting → roller-way basis is abolished to basement bottom board end face → milling train and corollary apparatus foundation construction → milling train and corollary apparatus installation → milling train body pipe arrangement → unit and debugged → resume production.
The defect of above conventional reforming mode is, the off-time is long, is generally some months.
Summary of the invention
In order to overcome the long deficiency of conventional reforming mode off-time of existing increase milling train unit, technical problem to be solved by this invention is to provide the remodeling method that a kind of existing roll line that shortens the off-time is set up milling train.
The technical solution adopted for the present invention to solve the technical problems is: existing roll line is set up the remodeling method of milling train, removes after the old roller-way of newly-increased mill area, at this place, interim roller-way is set; The milling train basis of constructing below interim roller-way; Construction area outside roll line arranges to be passed basis and is positioned at the passing track of passing on basis, pass track and extend to milling train basis, on passing track, assemble milling train, then utilize push unit that milling train is passed in place on milling train basis, rear construction in place is the reinforcement basis of rolling-mill housing fixedly.
Further, by formal specification requirement of installing, rolling mill rail base is being passed on track behind location, then on rolling mill rail base, is being connected rolling-mill housing and upper beam, and according to normalized checking, adjust the installation dimension of rolling-mill housing and upper beam.
Further, after rolling mill rail base, rolling-mill housing and upper beam install, on rolling mill rail base, install and debug after push unit, then carrying out the installation of milling train body miscellaneous equipment and the installation of body pipe arrangement.
Further, after push unit has been debugged, before carrying out the installation of milling train body miscellaneous equipment and the installation of body pipe arrangement, between rolling mill rail base and passing basis, adjustment backing plate is set.
Further, on passing track, be provided with slide rail, the piston shoes that mate with slide rail are set on rolling mill rail base.
Further, before passing milling train, complete the flushing of milling train body pipe arrangement and this part pipe arrangement.
Further, the interim crane of covering milling train assembling region being installed is for milling train assembling.
Further, after milling train passing is in place, take described passing basis as foundation construction changing rig basis, then complete changing rig and install and pipe arrangement.
Further, described reinforcement basis is connected with milling train basis by reserved joint bar or bar planting.
The invention has the beneficial effects as follows: the off-time significantly shortens have obvious economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the flow chart that existing existing roll line is set up the conventional remodeling method of milling train.
Fig. 2 is the flow chart that existing roll line of the present invention is set up the remodeling method of milling train.
Fig. 3 is the schematic diagram of interim roller-way.
Fig. 4 is the schematic diagram (in figure, dotted arrow represents virtual passing direction) on conventional milling train basis.
Fig. 5 is the schematic diagram on milling train basis while adopting remodeling method of the present invention.
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is milling train and push unit foundation layout plan (push unit and track are not shown) while adopting remodeling method of the present invention.
Fig. 8 is the schematic diagram on secondary construction reinforcement basis in milling train basis while adopting remodeling method of the present invention.
Fig. 9 is the schematic diagram of passing track and adjusting backing plate.
Project under construction for needing to stop production in the solid box of Fig. 1, Fig. 2, is the project under construction that does not need stopping production in dotted line frame.
In figure, be labeled as, 1-bottom-supporting steel truss, the interim roller-way of 2-, 3-retains roller-way, 4-retains basis, 5-need abolish basis, 6-rolling-mill housing bottom and conventional basic interference region, 7-milling train basis, 8-passes basis, the interim crane Foundation of steel frame of 9-, the interim crane steelframe of 10-, the interim crane of 11-, 12-rolling-mill housing, 13-one-time-concreting basis arrangement of reinforcement, 14-reserved joint bar or bar planting, 15-passes track, 16-rolling mill rail base, 17-reinforcement basis, 18-adjusts backing plate, 19-foundation bolt, 20-slide rail, 21-piston shoes, 22-rolling centerline, 23-Provisional Center line, the center line of 31-first milling train, the center line of 32-the second rolling mill, the center line of 33-the 3rd rolling mill.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, the conventional construction technology that increases milling train on existing roll line is: stoppings production → part laminar flow roller-way dismounting → roller-way basis is abolished to debug → hold to load to basement bottom board end face → milling train and the pipe arrangement → zero load monomer debugging → zero load interlock of corollary apparatus foundation construction → rolling-mill housing installation → rolling mill body miscellaneous equipment installation → milling train body and debugged → resume production, wherein, when carrying out milling train and corollary apparatus foundation construction, carry out transfer gear box and the construction of main Motor Foundation and roll change foundation construction, when carrying out rolling mill body and the installation of body miscellaneous equipment, complete transfer gear box and the installation of main motor and changing rig, the installation of changing rig conduit under fluid pressure.As for being connected between transfer gear box and main motor, transfer gear box, be connected with roll, normally in the process of milling train monomer debugging, connect, that is:, after the independent test running of main motor completes, is being connected also test running with transfer gear box; After each hydraulic means in rolling-mill housing and hydraulic pressure changing rig monomer have been debugged, roll stacks could be placed on changing rig, utilize hydraulic cylinder that roll stacks is pushed to rolling-mill housing, at this moment, main motor, transfer gear box, universal-joint spindle, roll working roll have just been connected in together, unclamp spindle enclasp device, utilize the test running of main driven by motor roll.
The advantage of conventional method is, without unnecessary ancillary equipment configuration with install, but the shortcoming of conventional method be transformation during roll line always in suspended state, how long the transformation duration has, and how long just has downtime, affects productivity effect and social benefit.
As Fig. 2, Fig. 3, Fig. 5, Fig. 6, Fig. 7, shown in Fig. 8 and Fig. 9, existing roll line of the present invention is set up the remodeling method of milling train and is transformed in other words after the old roller-way in region in the newly-increased mill area of dismounting, interim roller-way 2 is set at this place, interim roller-way 2 is connected between the breakpoint that retains roller-way 3, the Main Function of interim roller-way 2 is with this roller-way, to replace the old roller-way of newly-increased mill area, for abolishing on the old basis of newly-increased mill area, new foundation construction provides operating condition, guarantee in the situation that maintaining normal production, rebuilding construction can carry out safely smoothly, after old roller-way basis is abolished, the milling train basis 7 of constructing below interim roller-way 2, maintaining production period, construction area outside roll line arranges to be passed basis 8 and is positioned at the passing track 15 of passing on basis 8, pass track 15 and extend to milling train basis 7, passing track 15 is horizontal rail, on passing track 15, assemble milling train, the assembling position that is also about to milling train moves outward, for example, by the outer Provisional Center line 23 that moves to of rolling centerline 22, avoid the stopping production at milling train assembly process, then utilized push unit that milling train is passed in place on milling train basis 7, during by the inventive method construction, just carry out that roller-way construction and milling train are passed in place, changing rig foundation construction and changing rig is installed, need stopping production during milling train debugging, although can producing gadget buying and install, dismantle the special expenses bringing, the present invention increases, but the off-time significantly shortens, the economic benefit increase bringing thus substantially exceeds special expenses increases the interests loss bringing.
Strip-mill strip body regions basis is generally structure as shown in Figure 4, and this structure is generally according to the basis of normal mounting method design, and the breach top that rolling-mill housing 12 can be stayed from basic and rolling mill rail base is put into.But must be noted that while applying remodeling method of the present invention: the one-time-concreting region on milling train basis should be avoided interfering with the bottom of rolling-mill housing, should avoid rolling-mill housing bottom and conventional basic interference region 6 as shown in Figure 5, after milling train passing is in place, the more fixedly reinforcement basis 17 of rolling-mill housing 2 of constructing.
The design of interim roller-way 2 can be according to the newly-increased physical dimension of mill area, the physical dimension of original base, and consider to resume production after need to abolish the working space on basis 5, determine design after its basic size, manufacture and install.As shown in Figure 3, interim roller-way 2 can adopt bottom-supporting steel truss 1 to support, and the two ends of bottom-supporting steel truss 1 are connected in and retain on basis 4.
After preparation of construction is ready, can utilize stopping production in short-term of production line approximately 48 hours that the old roller-way in transformation region is removed, and cut the old basis of part, interim roller-way 2 is installed, the principle that old basis cuts is the installation that will guarantee interim roller-way 2, and interim roller-way 2 belows after resuming production have enough working spaces to guarantee the continuation construction of next stage.Interim roller-way 2 after installing and resuming production can start basis, bottom to continue to abolish to basement bottom board upper level.Old basis is abolished the mode that can adopt static blasting and pneumatic pick to abolish to combine and is carried out.After abolishing, to newly establishing milling train base area and passing base area and carry out necessary cleaning, can start the construction on milling train basis 7 and passing basis 8.
For fear of also milling train installation dimension being adjusted and extended the off-time after milling train passing being in place, after preferably rolling mill rail base 16 being located on passing track 15 by formal specification requirement of installing, on rolling mill rail base 16, connect again rolling-mill housing 12 and upper beam, and according to the relevant installation dimension of normalized checking, adjustment rolling-mill housing 12 and upper beam.
After rolling mill rail base 16, rolling-mill housing 12 and upper beam install, in passing process, because the reason such as asynchronous of push unit causes the skew of milling train installation dimension, preferably to after being arranged on push unit on rolling mill rail base 16 and debugging, then carry out the installation of milling train body miscellaneous equipment and the installation of body pipe arrangement.
After described push unit has been debugged, before carrying out the installation of milling train body miscellaneous equipment and the installation of body pipe arrangement, preferably at rolling mill rail base 16 and between passing basic 8, arrange and adjust backing plate 18, stressed impaired in the installation process of milling train body miscellaneous equipment and the installation of body pipe arrangement to avoid passing track 15, thereby cause in passing process, impaired passing track 15 affects the installation dimension of milling train.
In order to reduce passing resistance, preferably on passing track 15, be provided with slide rail 20, the piston shoes 21 that mate with slide rail 20 are set on rolling mill rail base 16, also reduced the processing cost of passing track 15 simultaneously.For reducing, pass resistance, can between slide rail 20 and piston shoes 21, smear appropriate lubricant grease.
Rolling mill body pipe arrangement One's name is legion, pipeline rout is complicated, and the preparation time is generally at 30～70 days.In order further to reduce the off-time of newly-increased milling train after in place on roll line, preferably before passing milling train, complete the flushing of milling train body pipe arrangement and this part pipe arrangement.After the installation of rolling mill body equipment, start rolling mill body piping work, after completing body pipe arrangement, can first rolling mill body pipe arrangement be carried out to circulation flushing complete, to shorten next step flushing of pipeline time.
In order to reduce taking original crane gear in workshop between milling train installation period, make to produce with rebuilding construction substantially non-interference, the interim crane 11 in covering milling train assembling region is preferably installed to be assembled for milling train, corresponding, in construction milling train basis 7 and basic 8 o'clock of passing, can carry out the construction of interim crane Foundation of steel frame 9 and the installation of interim crane steelframe 10, interim crane 11 is arranged on interim crane steelframe 10, the installation of interim crane can adopt the original crane gear lifting in workshop, after the phase, installation and debugging were complete, can start the installation of milling train, the lifting capacity of interim crane 11 according to rolling mill body the heaviest one piece apparatus weight except frame definite, the upper beam that heavier rolling-mill housing 12 and sling height are higher etc. can lift with original crane gear in workshop.
After 7 constructions of passing basis are complete, can start to install passing track 15, the design and installation of passing track 15 and push unit are as the criterion to maintain the indeformable displacement of milling train in passing process.The installation test stone of passing track 15 can require with reference to the guide rails assembling of GB50271 < < Code for construction and acceptancw of metal cutting machine installation engineering > > middle guide grinding machine to carry out.Push unit preferably adopts the self-locking type hydraulic crawl device that belongs to prior art.
Pass in place after, should check and adjust the position dimension of rolling mill frame window face.Check and carry out being again connected of rolling mill body pipe arrangement and workshop pipeline after qualified, and remove and pass track 15, complete the construction on reinforcement basis 17.
Owing to passing basis 8, the position of the changing rig supporting with milling train will be taken, after milling train passing is in place, preferably take described passing basis 8 as foundation construction changing rig basis, utilize push unit basis as base plate, the changing rig basis of directly constructing thereon, then completes changing rig and installs and pipe arrangement.In conventional remodeling method of the prior art, changing rig basis and changing rig are installed with milling train basis and milling train assembling and are synchronizeed and carry out, but due to changing rig basis and changing rig install the actual time that will spend and milling train basis and milling train assemble the time that will spend compare short a lot, so adopt method of the present invention still can shorten the off-time.
As shown in Figure 6 and Figure 8, described reinforcement basis 17 can be connected with milling train basis 7 by reserved joint bar or bar planting 14, although therefore reinforcement basic 17 is built for secondary, but still can be connected into pairs with the milling train basis 7 of one-time-concreting the basis of milling train formation firm support.
Embodiment:
Certain steel plant builds up an excellent special steel steel rolling production-line of 1800mm for 2008, its main technique equipment is configured to 1 walking beam furnace, 1 vertical miller, 1 four roller reversible roughing unit, 1 steekle mill unit, 1 coiling machine, and design is produced 800000 tons per year.Along with completing of the said firm's ironmaking technology upgrading and stainless steel-making technological transformation, hot rolling slab aggregated capacity reaches 1,800,000 tons.For matching with upstream process production capacity, to steckel rolling line capacity expansion revamping, newly-increased 1 heating furnace, 3 finishing mills of coiler furnace Increasing exports, coiling area increases by 1 coiling machine, and traffic zone increases by 3 sections of step rates.After technological transformation, rolling line changes 1+1+3 pattern into, and capital equipment has: 2 walking beam heating furnaces, 1 vertical miller, 1 roughing mill, 1 drum type flying shears, 1 stove volume finishing mill, 3 finishing mills, the reinforced cooling facility for laminar flow of 1 cover, 2 coiling machines, 1 cover steel coil transportation line.The key position of this improvement project restriction duration is the installation of newly-increased 3 finishing mills after coiler furnace.
Apply remodeling method of the present invention and complete the installation of described 3 finishing mills.Total duration, off-time to the scheme with conventional modification scheme and the inventive method transformation compare, on this basis, by the situation that tissue does not increase production in advance, the revenue loss aspect of steel rolling production-line stopping production production loss, loss of income and government aspect is carried out primary Calculation and relatively seen the following form 1.
The pure production suspension induced losses of table 1 calculates and compares
If do not increased production in advance loss production capacity, may bring the loss in market, therefore, again according to organizing in advance well stimulation, by 50% of the production capacity of shutdown period loss, produce in advance, in the one-period before the corresponding stopping production cycle, monthly increase production 50% to make up the economic loss that stops production and bring, then it is contrasted, its contrast situation is referring to table 2.
Table 2 increases production the comparison of 50% loss production capacity in advance
By above-mentioned two kinds of comparison methods and comparison result, prove: the present invention program can significantly shorten the off-time with respect to conventional modification scheme have obvious economic benefit (performance of enterprises) and obvious social benefit (expenses of taxation income).
Claims (3)
1. existing roll line is set up the remodeling method of milling train, it is characterized in that: remove after the old roller-way of newly-increased mill area, interim roller-way (2) is set at this place; Interim roller-way (2) is connected between the breakpoint that retains roller-way (3), interim roller-way (2) is for replacing the old roller-way of newly-increased mill area, for abolish on the old basis of newly-increased mill area, new foundation construction provides operating condition, guarantee in the situation that maintaining normal production, rebuilding construction can carry out safely smoothly; After old roller-way basis is abolished, on interim roller-way (2) construction milling train basis, below (7); Maintaining production period, construction area outside roll line arranges to be passed basis (8) and is positioned at the passing track (15) of passing on basis (8), pass track (15) and extend to milling train basis (7), passing track (15) is horizontal rail, is passing the upper assembling of track (15) milling train; Then utilize push unit that milling train is passed upper in place to milling train basis (7); The one-time-concreting region on milling train basis should be avoided interfering with the bottom of rolling-mill housing, after milling train passing is in place, the more fixedly reinforcement basic (17) of rolling-mill housing of construction; Interim roller-way (2) adopts bottom-supporting steel truss (1) to support, and the two ends of bottom-supporting steel truss (1) are connected in and retain on basis (4);
After preparation of construction is ready, at production line shutdown period, old roller-way in transformation region is removed, and cut the old basis of part, interim roller-way (2) is installed, the principle that old basis cuts is the installation that will guarantee interim roller-way (2), and the below of the interim roller-way (2) after resuming production has enough working spaces to guarantee the continuation construction of next stage; For fear of also milling train installation dimension being adjusted and extended the off-time after milling train passing being in place, by formal specification requirement of installing by rolling mill rail base (16) after passing the upper location of track (15), again in upper rolling-mill housing (12) and the upper beam of connecting of rolling mill rail base (16), and according to the relevant installation dimension of normalized checking, adjustment rolling-mill housing (12) and upper beam;
After rolling mill rail base (16), rolling-mill housing (12) and upper beam install, on rolling mill rail base (16), install and debug after push unit, then carry out the installation of milling train body miscellaneous equipment and the installation of body pipe arrangement;
After push unit has been debugged, before carrying out the installation of milling train body miscellaneous equipment and the installation of body pipe arrangement, between rolling mill rail base (16) and passing basis (8), arrange and adjust backing plate (18); Stressed impaired in the installation process of milling train body miscellaneous equipment and the installation of body pipe arrangement to avoid passing track (15), thus cause in passing process, and impaired passing track (15) affects the installation dimension of milling train;
In order to reduce passing resistance, on passing track (15), be provided with slide rail (20), at the upper piston shoes (21) that mate with slide rail (20) that arrange of rolling mill rail base (16), also reduced the processing cost of passing track (15) simultaneously; In order to reduce the off-time of newly-increased milling train after in place on roll line, before passing milling train, complete the flushing of milling train body pipe arrangement and this part pipe arrangement.
2. existing roll line as claimed in claim 1 is set up the remodeling method of milling train, it is characterized in that: in order to reduce taking original crane gear in workshop between milling train installation period, make production and rebuilding construction non-interference, the interim crane (11) in covering milling train assembling region is installed and for milling train, is assembled; Accordingly, when construction milling train basis (7) and passing basis (8), carry out the construction of interim crane Foundation of steel frame (9) and the installation of interim crane steelframe (10), interim crane (11) is arranged on interim crane steelframe (10), the installation of interim crane (11) adopts the original crane gear lifting in workshop, the lifting capacity of interim crane (11) according to rolling mill body the heaviest one piece apparatus weight except frame determine, in the higher upper beam use workshop of heavier rolling-mill housing (12) and sling height, original crane gear lifts.
3. existing roll line as claimed in claim 1 is set up the remodeling method of milling train, it is characterized in that: pass the complete installation passing track (15) that can start afterwards of foundation construction, the design and installation of passing track (15) and push unit are as the criterion to maintain the indeformable displacement of milling train in passing process; Pass in place after, should check and adjust the position dimension of rolling mill frame window face; Check and carry out being again connected of rolling mill body pipe arrangement and workshop pipeline after qualified, and remove and pass track (15), complete the construction of reinforcement basis (17); Reinforcement basis (17) is connected with milling train basis (7) by reserved joint bar or bar planting (14); After milling train passing is in place, take and pass basis (8) as foundation construction changing rig basis, then complete changing rig and install and pipe arrangement.
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| CN201210269349.6A CN102764766B (en) | 2012-07-31 | 2012-07-31 | Reconstruction method for adding rolling mill on existing rolling line |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103469813B (en) * | 2013-09-10 | 2016-02-03 | 中国十九冶集团有限公司 | A kind of online mounting method of existing roll line milling train |
| CN103447304B (en) * | 2013-09-13 | 2015-08-26 | 中国十九冶集团有限公司 | The online installation method of existing roll line milling train |
| CN105297796B (en) * | 2014-07-21 | 2017-02-15 | 五冶集团上海有限公司 | Rapid reinforcing and transforming method for drum type flying shears |
| CN104399747A (en) * | 2014-11-17 | 2015-03-11 | 中国第一重型机械股份公司 | Steckel mill production line |
| CN106002240B (en) * | 2016-06-08 | 2018-03-27 | 中国二十二冶集团有限公司 | Hydraulic press frame installation method |
| CN113231477B (en) * | 2021-04-15 | 2022-07-26 | 中国三冶集团有限公司宁波分公司 | Rolling mill horizontal sliding device with lifting function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2829928Y (en) * | 2005-10-14 | 2006-10-25 | 中国第二重型机械集团公司 | Fast roller displacing appts, for six-roller rolling mill |
| CN100479941C (en) * | 2002-12-05 | 2009-04-22 | Sms迪马格股份公司 | Rolling mill comprising means for exchanging the rolls |
| CN101664762A (en) * | 2009-09-11 | 2010-03-10 | 上海同济宝冶建设机器人有限公司 | Ultra-large type memorial archway side-standing rotating installation technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001150009A (en) * | 1999-11-30 | 2001-06-05 | Mitsubishi Heavy Ind Ltd | Equipment for roll unit replacement for roll mill |
-
2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100479941C (en) * | 2002-12-05 | 2009-04-22 | Sms迪马格股份公司 | Rolling mill comprising means for exchanging the rolls |
| CN2829928Y (en) * | 2005-10-14 | 2006-10-25 | 中国第二重型机械集团公司 | Fast roller displacing appts, for six-roller rolling mill |
| CN101664762A (en) * | 2009-09-11 | 2010-03-10 | 上海同济宝冶建设机器人有限公司 | Ultra-large type memorial archway side-standing rotating installation technology |
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