CN110227717A - A kind of changing rig and method - Google Patents
A kind of changing rig and method Download PDFInfo
- Publication number
- CN110227717A CN110227717A CN201910593551.6A CN201910593551A CN110227717A CN 110227717 A CN110227717 A CN 110227717A CN 201910593551 A CN201910593551 A CN 201910593551A CN 110227717 A CN110227717 A CN 110227717A
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- China
- Prior art keywords
- working roll
- tractor
- calender rolls
- intermediate calender
- pair
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000010977 unit operation Methods 0.000 claims abstract description 4
- 238000003801 milling Methods 0.000 claims description 29
- 101150113144 CARTPT gene Proteins 0.000 abstract description 32
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000013228 contact guidance Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
- B21B31/103—Manipulators or carriages therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/12—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by vertically displacing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Working Implements (AREA)
Abstract
The present invention relates to mill roll fields, more particularly to a kind of changing rig, including at least cart, tractor and roller system, it further include nitrogen gas spring, a pair of upper rail, a pair of of lower railway, handle and draw hook, the roller system includes upper intermediate calender rolls, top working roll, bottom working roll and lower intermediate calender rolls, between the upper intermediate calender rolls and top working roll bearing block, a pair of of nitrogen gas spring is respectively provided between top working roll and bottom working roll bearing block and between bottom working roll and lower intermediate roll bearing seat, sliding setting tractor on the cart, the tractor and cart activity direction are perpendicular to unit operation line, upper rail and lower railway are successively fixed from top to bottom on the cart and positioned at tractor two sides.The present invention is due to the technological means that pulls other roller systems by bottom working roll and lifted from short transverse to roller system, the problems such as equipment in the prior art is heavy, space is huge and at high cost is efficiently solved, and then realizes Highly Effective and the light technical effect of roll change.
Description
Technical field
The present invention relates to mill roll fields, and in particular to a kind of changing rig and method.
Background technique
Six-high cluster mill has a wide range of applications during the plastic forming of various metal materials, the roll change system of six-high cluster mill
System directly decides the rhythm of production of production line and the Space Scale of unit equipment.Due to the roll change period of support roller system it is longer and
And influence of the roll surface precision of intermediate calender rolls and working roll to product surface quality and Product Precision is very big, therefore about six-high cluster mill
What the research of roll changing system was mainly unfolded around the roll change of intermediate calender rolls and working roll.
The roll change of six-high cluster mill is the process that old roller system is hauled out milling train by roll changing carriage and new roller system is pushed into milling train.It passes
It is upper intermediate calender rolls system, top working roll system, bottom working roll system and lower intermediate calender rolls that the roll changing system of system six-high cluster mill, which is in roll-changing equipment,
Respectively individual changing track for roll is arranged in system, and makes roll-changing equipment far from completing old roller system from the transmission side of roll-changing equipment after milling train
It hangs out roll-changing equipment and new roller system hangs in roll-changing equipment, therefore there is such as in use for traditional six-high cluster mill roll changing system
Lower problem.
One, space is huge.Since roll-changing equipment is upper intermediate calender rolls system, top working roll system, bottom working roll system and lower intermediate calender rolls
The changing track for roll that system has been arranged respectively independent, therefore roll-changing equipment is very big in short transverse the space occupied.And roll-changing equipment
Milling train distance remote enough be must come out so that roller system can hang out or hang in from the transmission side of roll-changing equipment, thus this roll change system
The corresponding roll-changing equipment of system the space occupied on horizontal span is very big.
Two, equipment is heavy.Roll-changing equipment corresponding to traditional roll changing system causes in the huge space expense of short transverse
Roll-changing equipment tonnage weight, and device height causes greatly equipment center of gravity higher.Large-tonnage and high center of gravity limit roll-changing equipment
Movement speed, and then greatly reduce roll change speed and rhythm of production.
Three, at high cost.The huge space requirement of traditional roll changing system causes its workshop and land occupation huge, and equipment heaviness causes
Roll-changing equipment designs and manufactures that cost is very high, these are all the significant wastages to social resources and are very undesirable
's.
Summary of the invention
The present invention provides a kind of changing rig, solves problems existing in the prior art, realizes efficient roll change
Technical effect.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of changing rig includes at least cart, tractor and roller system, further includes nitrogen gas spring, a pair of of upper rail, a pair
Lower railway, handle and draw hook, the roller system include upper intermediate calender rolls, top working roll, bottom working roll and lower intermediate calender rolls, it is described on
Between intermediate calender rolls and top working roll bearing block, between top working roll and bottom working roll bearing block and bottom working roll and lower intermediate calender rolls
A pair of of nitrogen gas spring is respectively provided between bearing block, sliding setting tractor, the tractor and cart activity side on the cart
To perpendicular to unit operation line, on the cart and it is located at tractor two sides successively fixed upper rail and lower railway from top to bottom,
The handle is fixed on bottom working roll one end, and the draw hook is detachably connected on tractor one end.
The bearing of the upper intermediate calender rolls and the bearing block opposite face at top working roll both ends, top working roll and bottom working roll both ends
Seat opposite face and the bearing block opposite face at bottom working roll and lower intermediate calender rolls both ends are provided with a pair of of groove, the upper intermediate calender rolls and
The groove of top working roll bearing block opposite face, the groove of top working roll and bottom working roll bearing block opposite face and bottom working roll and
It is respectively provided with nitrogen gas spring in the groove of lower intermediate roll bearing seat opposite face,
The nitrogen gas spring and groove inner wall face have the gap 2mm.
The upper rail is made of two active rails and three retaining rails, setting activity between three retaining rails are adjacent
Rail, described active rail one end and retaining rail are hinged, and the active rail other end is contacted with retaining rail.
The draw hook is made of a pair of brackets, a pair of of shaft, a pair of of hook and interlocking bar, and the bracket is relatively solid in parallel
It is scheduled on tractor one end, a pair of described hook one end passes through shaft respectively and is hinged in a pair of brackets, and a pair of hook is another
End lower surface is provided with guide surface and link slot, fixes interlocking bar between a pair of hook other end.
The tractor is located on lower railway.
A kind of roll-changing method further includes following steps including a kind of changing rig described above,
The first step releases milling train to the pressure of roller system, and nitrogen gas spring will push 10mm-30mm between the roller in roller system.
The hook of second step, tractor is connect with handle, and extreme position after tractor is moved on cart drags roller system
It drags to upper rail and lower railway, cart is moved to rear extreme position.
Third step disconnects hook and the connection of handle, hung from top to bottom by row upper intermediate calender rolls in successively hanged roller system, on
Working roll, bottom working roll open the active rail of upper rail, then the lower intermediate calender rolls by the hanged roller system of row.
4th step, row lift lower intermediate calender rolls, close the active rail of upper rail, then lift bottom working roll, top working roll and
Upper intermediate calender rolls.
5th step, cart are moved to preceding extreme position, and extreme position before tractor is mobile pushes roller system to enter milling train.
The beneficial effects of the present invention are: pulling other roller systems and from short transverse to roller by bottom working roll due to using
It is the technological means lifted, efficiently solves the problems such as equipment is heavy, space is huge and at high cost in the prior art, in turn
Realize Highly Effective and the light technical effect of roll change.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is roller system side view of the invention.
Fig. 3 is roller owner's view of the invention.
Fig. 4 is hook side view of the invention.
Fig. 5 is hook top view of the invention.
Fig. 6 is side view of the invention.
Fig. 7 is upper rail structural schematic diagram of the invention.
In figure: 1- cart；2- tractor；3- nitrogen gas spring；4- upper rail；5- lower railway；6- handle；7- draw hook；8-
Upper intermediate calender rolls；9- top working roll；10- bottom working roll；Intermediate calender rolls under 11-；12- active rail；13- retaining rail；14- bracket；15- turns
Axis；16- hook；17- interlocking bar；18- guide surface；19- link slot.
Specific embodiment
Embodiment 1:
It referring to Fig.1-7, is the structural schematic diagram of the embodiment of the present invention 1, a kind of changing rig includes at least cart 1, traction
Vehicle 2 and roller system, it is characterised in that: it further include nitrogen gas spring 3, a pair of of upper rail 4, a pair of of lower railway 5, handle 6 and draw hook 7,
The roller system includes upper intermediate calender rolls 8, top working roll 9, bottom working roll 10 and lower intermediate calender rolls 11, the upper intermediate calender rolls 8 and upper work
Make between 9 bearing block of roller, between 10 bearing block of top working roll 9 and bottom working roll and bottom working roll 10 and lower 11 bearing of intermediate calender rolls
A pair of of nitrogen gas spring 3 is respectively provided between seat, sliding setting tractor 2,1 activity side of the tractor 2 and cart on the cart 1
To perpendicular to unit operation line, on the cart 1 and it is located at 2 two sides of tractor successively fixed upper rail 4 and lower rail from top to bottom
Road 5, the handle 6 are fixed on 10 one end of bottom working roll, and the draw hook 7 is detachably connected on 2 one end of tractor.
In actual use: milling train stops first, releases milling train to the draught pressure of roller system, while nitrogen gas spring 3 is upheld, top
Dynamic bottom working roll 10, top working roll 9 and upper intermediate calender rolls 8, make lower intermediate calender rolls 11, bottom working roll 10, top working roll 9 and upper intermediate calender rolls
8 due to nitrogen gas spring 3 and between be separated from each other, then starting cart 1 makes cart be moved to the roll change mouth of milling train, then tractor
2 is mobile to milling train direction, and when being moved near roller system, the draw hook 7 on tractor 2 is connect with handle 6, is then controlled
Tractor 2 makes lower intermediate calender rolls 11, bottom working roll 10, top working roll 9 by 7 pull handle 6 of draw hook far from milling train, tractor 2
Follow movement with upper intermediate calender rolls 8, the pulley of lower 11 two sides of intermediate calender rolls enters on lower railway 5, the pulleys of 10 two sides of bottom working roll into
Enter upper rail 4 on, then start cart 1 far from milling train, be moved to rear extreme position, then by row hang or lifting equipment successively
Hanged upper intermediate calender rolls 8, top working roll 9 and bottom working roll 10 and lower intermediate calender rolls 11, then again by new roller system reversely lift to
On upper rail 4 and lower railway 5 on cart 1, then roller system is sent into milling train, milling train pair by cart 1 and tractor 2 again
Roller system pressure, nitrogen gas spring 3 are compressed, are contacted between roller system.
Embodiment 2:
On the basis of embodiment 1, referring to Fig. 2 and Fig. 3: the bearing block phase of the upper intermediate calender rolls 8 and 9 both ends of top working roll
Opposite, the bearing block opposite face of top working roll 9 and 10 both ends of bottom working roll and bottom working roll 10 and lower 11 both ends of intermediate calender rolls
Bearing block opposite face is provided with a pair of of groove, the groove of 9 bearing block opposite face of the upper intermediate calender rolls 8 and top working roll, upper work
The groove of the 11 bearing block opposite face of groove and bottom working roll 10 and lower intermediate calender rolls of 10 bearing block opposite face of roller 9 and bottom working roll
Inside it is respectively provided with nitrogen gas spring 3.
In actual use: when roller is tied up in milling train, since milling train is to the extruding force of roller system, compressing nitrogen gas spring 3, roller
System works normally, and when roll change, milling train releases the extruding force to roller system, while nitrogen gas spring 3 is upheld, when roller system between jacked up,
Convenient for the replacement between roller system.
Embodiment 3:
On the basis of embodiment 1, referring to Fig. 2 and Fig. 3: the nitrogen gas spring 3 has the gap 2mm with groove inner wall face.
In actual use: the gap of 2mm can guarantee not generate when roller ties up to work in milling train with 3 outside wall surface of nitrogen gas spring
Contact reduces friction, and since the self weight of roller system is than heavier, nitrogen gas spring 3 is more stable between roller system, when roller ties up to mobile
It will not turn on one's side.
Embodiment 4:
On the basis of embodiment 1, referring to Fig.1, Fig. 6 and Fig. 7: the upper rail 4 is solid by two active rails 12 and three
Orbit determination 13 forms, and active rail 12 is arranged between three retaining rails 13 are adjacent, and described 12 one end of active rail and retaining rail 13 are cut with scissors
It connects, the active rail other end is contacted with retaining rail 13.
In actual use: when lifting lower intermediate calender rolls 11, active rail 12 being erected, then lifts lower intermediate calender rolls again
11, the wider bearing block that lower intermediate calender rolls 11 may be implemented by the folding of active rail 12 is suitable by the relatively narrow upper rail 4 of opening degree
Benefit is packed into or hangs out.
Embodiment 5:
On the basis of embodiment 1, referring to Fig. 4, Fig. 5 and Fig. 7: the draw hook 7 is by a pair of brackets 14, a pair of of shaft
15, a pair of of hook 16 and interlocking bar 17 form, and the bracket 14 is fixed on 2 one end of tractor, a pair of hook in parallel relatively
16 one end pass through shaft 15 respectively and are hinged in a pair of brackets 14, and 16 other end lower surfaces of a pair of hook are provided with guide surface 18
With link slot 19, interlocking bar 17 is fixed between a pair of 16 other ends of the hook.
In actual use: by two hooks 16 while push and pull bar 6, can make occur partially when roller system is mobile
It moves, can guarantee that two hooks 16 are synchronous when being hinge joint rotation with shaft 15 by interlocking bar 17, lift hook 16
Angle is identical, while can be when hook 16 hits handle 6 by guide surface 18, the contact guidance face 18 first of handle 6, by
There is the gradient in guide surface 18, lift hook 16, then handle 6 enters in link slot 19, completes mounting, then passes through traction
Vehicle 2 is moved forward and backward, and pulls bracket 14, and bracket 14 drives hook 16 by shaft 15, and hook 16 drives handle 6 mobile, 6 band of handle
Dynamic roller system is mobile, when lifting roller system from cart 1, handle 6 is overturn to 2 direction of tractor, can prevent from being hung in roller system
Vehicle can not be lifted normally when transfer.
Embodiment 6:
On the basis of embodiment 1, referring to Fig.1: the tractor 2 is located on lower railway 5.
In actual use: tractor 2 is located on lower railway 5 erection that can save 2 track of tractor, reduces cart 1
Weight bearing, while saving the investment of resource.
Embodiment 7:
Referring to Fig.1-7: a kind of roll-changing method further includes following steps including a kind of changing rig described above,
The first step releases milling train to the draught pressure of roller system, and nitrogen gas spring 3 will push 10mm- between the roller in roller system
30mm。
The hook 16 of second step, tractor 2 is connect with handle 6, extreme position after tractor 2 is moved on cart 1, will
Roller system is drawn on upper rail 4 and lower railway 5, and cart is moved to rear extreme position.
Third step disconnects the connection of hook 16 with handle 6, and the upper intermediate calender rolls in successively hanged roller system are hung from top to bottom by row
8, top working roll 9, bottom working roll 10 open the active rail 12 of upper rail 4, then the lower intermediate calender rolls 11 by the hanged roller system of row.
4th step, row lift lower intermediate calender rolls 11, close the active rail 12 of upper rail 4, then lift bottom working roll 10, upper work
Make roller 9 and upper intermediate calender rolls 8.
5th step, cart 1 are moved to preceding extreme position, and extreme position before tractor 2 is mobile pushes roller system to enter milling train.
In actual use: milling train stops first, releases milling train to the draught pressure of roller system, while nitrogen gas spring 3 is due to solution
Except the pressure of roller system upper and lower ends, the bearing block at the roller both ends in roller system is mutually supported jack-up by nitrogen gas spring 3, pushes lower work
Roller 10, top working roll 9 and upper intermediate calender rolls 8, make between lower intermediate calender rolls 11, bottom working roll 10, top working roll 9 and upper intermediate calender rolls 8 by
Nitrogen gas spring 3 supports, and then starting cart 1 makes cart be moved to preceding extreme position, and cart is docked with the roll change mouth of milling train,
Then tractor 2 is moved to preceding extreme position to milling train direction, and when tractor 2 is mobile, the guide surface 18 and handle 6 for linking up with 16 are connect
Touching, 16 one end of hook are rotated up, and then tractor 2 continues to move to, and hook 16 follows movement, when the link slot 19 of hook 16 moves
When moving to 6 top of handle, due to self weight, hook 16 rotates down hook 16, is located at handle 6 in link slot 19,
Then control tractor 2 is moved to rear extreme position, and tractor 2 drives bottom working roll by 7 pull handle 6 of draw hook, handle 6
10, since roller system is self-possessed, lower intermediate calender rolls 11, top working roll 9 and upper intermediate calender rolls 8 is made to follow bottom working roll 10 mobile, when mobile
It waits, the pulley of lower 11 two sides of intermediate calender rolls enters on lower railway 5, and the pulley of 10 two sides of bottom working roll enters on upper rail 4, then opens
Cart 1 is moved far from milling train, is moved to rear extreme position, is then hung by row or lifting equipment successively hanged upper intermediate calender rolls 8, upper work
Make roller 9 and bottom working roll 10 and lower intermediate calender rolls 11, then again lifts new roller system reverse operating to the upper rail on cart 1
4 and lower railway 5 on, then again by cart 1 and tractor 2, roller system is sent into milling train, milling train presses to roller system, nitrogen bullet
Spring 3 is compressed, and is contacted between roller system.
Embodiments of the present invention are described in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
Various changes can be made, all in the protection scope of the technology.
Claims (7)
1. a kind of changing rig includes at least cart (1), tractor (2) and roller system, it is characterised in that: further include nitrogen gas spring
(3), a pair of of upper rail (4), a pair of of lower railway (5), handle (6) and draw hook (7), the roller system include upper intermediate calender rolls (8),
Top working roll (9), bottom working roll (10) and lower intermediate calender rolls (11), the upper intermediate calender rolls (8) and top working roll (9) bearing block it
Between, between top working roll (9) and bottom working roll (10) bearing block and bottom working roll (10) and lower intermediate calender rolls (11) bearing block it
Between be respectively provided with a pair of of nitrogen gas spring (3), sliding setting tractor (2), the tractor (2) and cart (1) on the cart (1)
Activity direction on the cart (1) and is located at tractor (2) two sides and successively fixes upper rail from top to bottom perpendicular to unit operation line
Road (4) and lower railway (5), the handle (6) are fixed on bottom working roll (10) one end, and the draw hook (7) is detachably connected on
Tractor (2) one end.
2. a kind of changing rig according to claim 1, it is characterised in that: the upper intermediate calender rolls (8) and top working roll (9)
The bearing block opposite face and bottom working roll of the bearing block opposite face at both ends, top working roll (9) and bottom working roll (10) both ends
(10) a pair of of groove, the upper intermediate calender rolls (8) and top working roll are provided with the bearing block opposite face at lower intermediate calender rolls (11) both ends
(9) groove and bottom working roll of the groove of bearing block opposite face, top working roll (9) and bottom working roll (10) bearing block opposite face
(10) and in the groove of lower intermediate calender rolls (11) bearing block opposite face nitrogen gas spring (3) are respectively provided with.
3. a kind of changing rig according to claim 2, it is characterised in that: the nitrogen gas spring (3) and groove inner wall face
With the gap 2mm.
4. a kind of changing rig according to claim 1, it is characterised in that: the upper rail (4) is by two active rails
(12) it is formed with three retaining rails (13), active rail (12) is set between three retaining rails (13) are adjacent, the active rail
(12) hingedly, active rail (12) other end is contacted with retaining rail (13) for one end and retaining rail (13).
5. a kind of changing rig according to claim 1, it is characterised in that: the draw hook (7) by a pair of brackets (14),
A pair of of shaft (15), a pair of of hook (16) and interlocking bar (17) composition, the bracket (14) are fixed on tractor (2) in parallel relatively
One end, a pair of described hook (16) one end pass through shaft (15) respectively and are hinged in a pair of brackets (14), a pair of hook
(16) other end lower surface is provided with guide surface (18) and link slot (19), fixed linkage between a pair of described hook (16) other end
Bar (17).
6. a kind of changing rig according to claim 1, it is characterised in that: the tractor (2) is located at lower railway (5)
On.
7. a kind of roll-changing method, it is characterised in that: including a kind of changing rig as claimed in any one of claims 1 to 6, also wrap
Include following steps:
The first step releases milling train to the pressure of roller system, and nitrogen gas spring (3) will push 10mm-30mm between the roller in roller system；
The hook (16) of second step, tractor (2) is connect with handle (6), and tractor (2) is moved to the rear limit on cart (1)
Roller system is drawn on upper rail (4) and lower railway (5) by position, and cart is moved to rear extreme position；
Third step disconnects the connection of hook (16) and handle (6), and the upper intermediate calender rolls in successively hanged roller system are hung from top to bottom by row
(8), top working roll (9), bottom working roll (10), open the active rail (12) of upper rail (4), then by the hanged roller system of row it is lower in
Between roller (11)；
4th step, row lift lower intermediate calender rolls (11), close the active rail (12) of upper rail (4), then lift bottom working roll (10),
Top working roll (9) and upper intermediate calender rolls (8)；
5th step, cart (1) are moved to preceding extreme position, and extreme position before tractor (2) is mobile pushes roller system to enter milling train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593551.6A CN110227717A (en) | 2019-07-03 | 2019-07-03 | A kind of changing rig and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593551.6A CN110227717A (en) | 2019-07-03 | 2019-07-03 | A kind of changing rig and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110227717A true CN110227717A (en) | 2019-09-13 |
Family
ID=67858033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910593551.6A Pending CN110227717A (en) | 2019-07-03 | 2019-07-03 | A kind of changing rig and method |
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| CN (1) | CN110227717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570771A (en) * | 2022-02-11 | 2022-06-03 | 郑孝桐 | Multi-roll numerical control cold rolling mill |
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| CN208613376U (en) * | 2018-08-21 | 2019-03-19 | 二重（德阳）重型装备有限公司 | Six-high cluster mill working roll and intermediate calender rolls roll change storing unit |
| CN109158427A (en) * | 2018-09-27 | 2019-01-08 | 天津市中重科技工程有限公司 | A kind of ESP endless rolling work roll change |
| CN208944834U (en) * | 2018-09-27 | 2019-06-07 | 天津市中重科技工程有限公司 | A kind of transfer trolley on BD rolling mill line |
| CN210411919U (en) * | 2019-07-03 | 2020-04-28 | 中国重型机械研究院股份公司 | Roll changing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570771A (en) * | 2022-02-11 | 2022-06-03 | 郑孝桐 | Multi-roll numerical control cold rolling mill |
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