CN205798002U - Axially accurate positioning and there is the short stress path rolling mill of high rigidity - Google Patents
Axially accurate positioning and there is the short stress path rolling mill of high rigidity Download PDFInfo
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- CN205798002U CN205798002U CN201620468869.3U CN201620468869U CN205798002U CN 205798002 U CN205798002 U CN 205798002U CN 201620468869 U CN201620468869 U CN 201620468869U CN 205798002 U CN205798002 U CN 205798002U
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- milling train
- rolling
- high rigidity
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- accurate positioning
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- 238000005096 rolling process Methods 0.000 title claims abstract description 46
- 238000003801 milling Methods 0.000 claims abstract description 60
- 230000033228 biological regulation Effects 0.000 claims abstract description 17
- 230000009467 reduction Effects 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 238000005098 hot rolling Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 244000178924 Brassica napobrassica Species 0.000 description 1
- 235000011297 Brassica napobrassica Nutrition 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
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Abstract
A kind of axial accurate positioning and have the short stress path rolling mill of high rigidity, belongs to hot rolling long material production technical field.Base is moved including roll gap regulation reduction box, milling train movement, axial direction positioning device, guide beam, milling train.Wherein: roll gap regulation reduction box is arranged on the top of milling train movement, axial direction positioning device is formed by supporting seat, cylindrical shaft and square slider；Milling train movement moves base by support seat with milling train and is connected, and guide crossbeam is arranged on milling train is moved on base by spacing seam, connecting bolt.Advantage is, can preferably realize the high precision rolling of the long material of hot rolling, enables in particular to meet the high-precision requirement of Asymmetric Rolling section.
Description
Technical field
This utility model belongs to hot rolling long material production technical field, in particular, provides a kind of axially accurate positioning and has
The short stress path rolling mill of high rigidity, can preferably realize the high precision rolling of the long material of hot rolling, and it is non-right to enable in particular to meet
Claim the high-precision requirement of rolling section.
Background technology
Since eighties of last century forties, after Swede proposes short stress line theory, short stress path rolling mill is firm because of it
The many merits such as degree is high, replacing is quick are widely used on hot rolling long material production line, and countries in the world also emerge
The invention of a lot of short stress path rolling mills.Along with the great development of Chinese Steel Industry, we grind long product rolling is polytechnic
Studying carefully more and more deep, the research to the short stress path rolling mill equipment meeting various state of arts is more and more deep.In conjunction with
Actual production service condition, improves deficiency, researches and develops new construction, forms this utility model.
Existing short stress path rolling mill includes roll gap regulation reduction box, milling train movement, axial direction positioning device, guide beam, rolls
Machine moves base etc..
Existing roll gap regulation reduction box achieves the transmission of little space large speed ratio by the combination of turbine and worm and bevel gear
Theory, its shortcoming is: the difficult processing of bevel gear and cost are high.
During long product rolling, top and bottom rolls, to bearing the counteracting force from rolled piece while rolled piece crimp, i.e. rolls
Power.The bearing block of roll both sides forms fulcrum, and the effect bottom roll in roll-force will produce flexural deformation.Practice card
Bright, can not be limited around the rotational freedom of roll bearing central point at roll deformation direction top chock；At rolling line
The degree of freedom in direction must limit.In the milling train movement of current type, tie system uses the cam structure of arc surface to realize
The trickle revolution disturbance of bearing block.The shortcoming of this structure: along with the steel of frequently stinging of the operation of rolling throws steel, this arc surface
Linear contact lay can quickly polish, the trickle revolution disturbance of bearing block is produced disadvantageous inhibition, reduces the essence of rolling
Degree and the service life of equipment.
The commonly used structure of roller system mechanism for axial adjusting in milling train movement is worm drive helical gear, spiral shell before and after drive
The rotation of stricture of vagina pair realizes axially adjustable, and the state adjustment of screw thread pair thread pitch front and back is the key point of this structure control.Existing
Some structures cannot realize the stepless changing of thread pitch state, it is impossible to obtains optimum Adjustment effect.
Roll, in addition to bearing roll-force radially, due to the inhomogeneities of up-down rollers groove stress, can produce axial force；
Asymmetric Rolling section, the axial force of generation can be bigger.In milling train movement, the thrust bearing of roller system fore side bears
This axial force, is transmitted on the bearing block of fore side.In current type, have by bearing block tie system bearing ring
Form a little anchor ring with pull bar and coordinate this axial force of conduction；Have passes through increase by outside fore side bearing block
" ear ", arranges pressing plate in frame and forms slideway to conduct this axial force.Both axial direction positioning devices, all deposit
In certain defect.The shortcoming that the little anchor ring of bearing ring and pull bar coordinates bearing structure: four pull bars are all cooperation herein
Face, proposes the highest requirement to processing and assembling, adds manufacturing cost；Pull bar is when bearing rolling pulling force, also
The bending pulsating load that the trickle revolution disturbance of bearing block to be born brings, needs rod material to have resisting fatigue impact
Performance, adds pull bar cost, reduces service life.Arrange pressing plate in frame to be formed outside slideway restriction bearing block
The shortcoming of " ear " structure: bearing block " ear " cannot be arranged on the midship section of bearing block, it is impossible to reaches best
Load effect；Under this kind of structure, bearing block bears trickle revolution disturbance, needs to be paid in fact by complicated sphere
Existing.
Existing short stress path rolling mill guide beam there is also a lot of shortcoming: is connected firm not between guide beam with milling train, guide and guard
The adjustment up and down of beam is the most convenient, and the slip of guide and guard slide adjusts underaction, and the locking of guide and guard slide is the most firm.
Summary of the invention
The purpose of this utility model is to provide a kind of axial accurate positioning and has the short stress path rolling mill of high rigidity, adds
Work manufacture is easier to, axial more accurate positioning, service life are higher and has the short stress path rolling mill of high rigidity.
The axial accurate positioning of this utility model and there is the short stress path rolling mill of high rigidity, including roll gap regulation reduction box
1, milling train movement 2, axial direction positioning device 3, guide beam 4, milling train move base 5.Wherein: roll gap regulation slows down
Case 1 is arranged on the top of milling train movement 2, and axial direction positioning device 3 is by supporting seat 31, cylindrical shaft 33 and square cunning
Block 34 forms；Milling train movement 2 moves base 5 by support seat 31 with milling train and is connected, and guide crossbeam 41 is by limit
Position seam, connecting bolt 43 are arranged on milling train and move on base 5.
Roll gap regulation reduction box described in the utility model, realizes the biography of little space large speed ratio by increasing one-level idle pulley
Dynamic theory.See ZL20140084681.X patent.
Milling train movement 2 described in the utility model is made up of tie system 21 and roller system 22 etc.；Tie system
21 roller systems 22 and support seat 31 are connected in series together, and form the agent structure of rolling.
Between copper nut 211 and bearing ring 212 in tie system 21 described in the utility model by the face of cylinder or
Sphere is formed hinged, and copper nut 211 and bearing ring 212 are gone here and there on pull bar 213；When the face of cylinder is hinged, at copper nut
And between bearing ring, increase one-level transition rings 214.
Bearing ring in tie system is designed to the face of cylinder or sphere, with the trickle revolution disturbance of applicable bearing block, and at double
Improve the bearing capacity of bearing ring.
The mechanism for axial adjusting of roller system 22 described in the utility model fore side is by female thread 226 and gland
229 realize A and C, the electrodeless adjustment of B and D thread pitch state.The thread pitch state of roller system fore side is real
Existing stepless changing, the conduction of rolling axial force is the most reasonable, improves the service life of milling train.
The cylindrical shaft 33 of axial direction positioning device 3 described in the utility model is arranged on the side of bearing block 32, with side
Shape slide block 34 forms revolute pair, and square slider 34 is arranged in the slideway supporting seat 31.Design cylindrical shaft and cunning
The axial direction positioning device that block is hinged, allows axial more accurate positioning, bears axial force bigger.
Guide crossbeam 41 in guide beam 4 described in the utility model is installed to by spacing seam and connecting bolt 43
Milling train moves on base 5, and connecting bolt 43 is fixed one firm entirety of formation, guide crossbeam 41 with
The bolt hole that milling train moves between base 5 is designed to elongated hole, is realized by the adjustment bolt 43 on guide crossbeam 41 top
The adjustment up and down of guide beam height.Guide beam and milling train are moved and are fixed by spacing seam and connecting bolt between base,
Form more firm overall structure, it is ensured that the stable operation of the operation of rolling.
The locking of guide and guard slide 44 described in the utility model and adjustment use the knot of ZL201520514886.1 patent
Structure.
Axial accurate positioning described in the utility model and there is the short stress path rolling mill of high rigidity have the advantage that
Roll gap regulation reduction box spur gear wheel transmission the most described in the utility model achieves little space large speed ratio
Transmission theory, has saved processing cost, reduces the difficulty of I& M.
Milling train movement the most described in the utility model, the bearing ring in tie system is designed to the face of cylinder or sphere, with suitable
With bearing block trickle revolution disturbance, and significantly improve the bearing capacity of bearing ring, change what existing arc surface easily lost efficacy
Shortcoming.
Milling train movement the most described in the utility model, the external screw thread that axially adjustable rear threads is paid and gland split into two
Part, it is achieved the stepless changing of thread pitch state, makes the conduction rolling axial force more reasonable, improves the use longevity of milling train
Life.
Axial direction positioning device the most described in the utility model, cylindrical shaft is arranged on bearing block side, with square slider shape
Become revolute pair, when bearing block trickle revolution disturbance, the centre of gyration line between cylinder axis and slide block and bearing block center
Line overlaps；It is higher that the side elevation of the face of cylinder and slide block bears axial force ability, and is easily worked, and then realizes more smart
Accurate axial location, improves rolling accuracy.
Guide beam the most described in the utility model and milling train are moved and are fixed by spacing seam and connecting bolt between base,
Forming stronger overall structure, when guide and guard guide generation horizontal torsion power to rolled piece, it can be preferably this power
On the basis of solution is transmitted to, it is ensured that the stable operation of the operation of rolling；Guide beam moves the bolt being connected between base with milling train
Hole is designed to elongated hole, realizes the adjustment up and down of guide beam height by the bolt that adjusts on guide beam top, rolls in difference
When passage is to guide beam requirement for height difference, the suitability of this utility model guide beam is higher.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.Wherein, roll gap regulation reduction box 1, milling train movement 2,
Axial direction positioning device 3, guide beam 4, milling train move base 5.
Fig. 2 is the structural representation of this utility model roll gap regulation reduction box.Wherein, worm screw 11, turbine 12, tooth
Wheel 13, idle pulley 14, gear 15.
Fig. 3 is this utility model roll gap regulation reduction box straight-line transmission schematic diagram.Wherein, gear 13, lazy
Wheel 14, gear 15.
Fig. 4 is the transmission schematic diagram of this utility model roll gap regulation reduction box broken line transmission.Wherein, gear 13, lazy
Wheel 14, gear 15.
Fig. 5 is the structural representation of this utility model milling train movement.Wherein, tie system 21, topping roll roller system 22.
Fig. 6 is the structural representation of this utility model tie system face of cylinder bearing ring.Wherein, copper nut 211, hold
Pressure ring 212, pull bar 213, transition rings 214.
Fig. 7 is the structural representation of this utility model tie system spherical pressure bearing ring.Wherein, copper nut 211, pressure-bearing
Ring 212, pull bar 213, transition rings 214.
Fig. 8 is the part sectioned view of this utility model roller system fore side, wherein, roll 221, thrust bearing 222,
Thrust shaft block 223, roll bearing lid 224, worm screw 225, inner screw sheath 226, intermediate sleeve 227, thrust bearing
External thread cap 228, gland 229.
Fig. 9 is the part sectioned view of existing roller system fore side, wherein, and roll 231, thrust bearing 232, only
Push shaft bearing 233, roll bearing lid 234, worm screw 235, female thread gland 236, intermediate sleeve 237, thrust bearing
External thread cap 238.
Figure 10 is the structural representation of this utility model axial direction positioning device, wherein, supports seat 31, supports the seat upper limit
Position plate 311, support seat lower limiting board 312, bearing block 32, pressure key 35.
Figure 11 is the exploded perspective view of this utility model axial direction positioning device, wherein, supports seat 31, supports the seat upper limit
Position plate 311, support seat lower limiting board 312, bearing block 32, cylindrical shaft 33, square slider 34, pressure key 35.
Figure 12 is the assembling structural representation that this utility model guide beam and milling train move base, and wherein, milling train moves
Base 5, guide crossbeam 41, connecting bolt 42, adjustment bolt 43, guide and guard slide 44.
Detailed description of the invention
Axial accurate positioning shown in Fig. 1 and there is the short stress path rolling mill of high rigidity, including roll gap regulation reduction box
1, milling train movement 2, axial direction positioning device 3, guide beam 4, milling train move base 5.Wherein: roll gap regulation slows down
Case 1 is arranged on the top of milling train movement 2, and axial direction positioning device 3 is by supporting seat 31, cylindrical shaft 33 and square cunning
Block 34 forms.Milling train movement 2 moves base 5 by support seat 31 with milling train and is connected, and guide beam 4 is stopped by spacing
Mouth and connecting bolt 43 are arranged on milling train and move on base 5.
Roll gap regulation reduction box shown in Fig. 2-4, is driven turbine 12, gear 13 to install with turbine 12 by worm screw 11
On the same axis, gear 13 drives idle pulley 14, idle pulley 14 to drive gear 15, gear 15 to drive pull bar 213 to realize
The adjustment of roller gap.
Milling train movement shown in Fig. 5,21 roller systems of tie system 22 and support seat 31 are connected in series together, shape
Become the agent structure of rolling.
Tie system shown in Fig. 6, Fig. 7, by the face of cylinder or spheric between copper nut 211 and bearing ring 212
Become hinged to adapt to rolling time the trickle revolution disturbance of bearing block, copper nut 211 and bearing ring 212 are gone here and there at pull bar 213
On, the trapezoidal thread pair of copper nut 211 and pull bar 213 bears roll-force, due to the face of cylinder or the hinged existence of sphere,
213, pull bar is acted on by rolling pulling force.Cylindrical surface structure needs to increase one-level transition between copper nut and bearing ring
Ring 214, the centrage of such cylindrical articulation pair could be parallel to rolling line all the time.
The fore side structure of roller system shown in Fig. 8, worm screw 225 drives the helical teeth round outside thrust shaft block 223
Dynamic, before and after drive, screw thread pair rotates, it is achieved roll 221 axially adjustable.Front and back the thread gap of screw thread pair can be directly
Affect the accuracy that roll axially positions, affected intermediate sleeve 227 by structure and space herein and gland 229 can not pass
Leading big axial force, therefore A and C, the thread gap state of B and D are only adjusted to situation as shown in the figure, ability
Ensure intermediate sleeve 227 and the big axial force of gland 229 non-conducting, ensure the accurate of axial location simultaneously.Axial force
Pathway: 221, roll rolling axial force is transmitted on thrust bearing 222, thrust bearing 222 rolling is axially
Power is conducted to thrust bearing external thread cap 228, and thrust bearing external thread cap 228 is conducted rolling axial force by bolt
To thrust shaft block 223, thrust shaft block 223 is conducted to rolling axial force to roll by the screw thread pair of A and C again
Roller bearing lid 224,224, roll bearing lid rolling axial force is conducted to bearing block 32, and bearing block 32 passes through axle again
It is conducted to milling train to positioner 3 and moves base 5, and then on the basis of being transmitted to milling train.This utility model is accompanying drawing 6
The purpose that shown existing female thread gland 236 splits into the female thread 226 shown in accompanying drawing 5 and gland 229 is to realize
A and C, the stepless changing of B and D thread pitch state, make axial force conducting path optimum, ensures axially location simultaneously
Accurate.
The existing structure of the fore side of roller system shown in Fig. 9, by the spiro keyhole position in thrust bearing external thread cap 228
Having level to adjust, can only approximate adjusts the state of A and C, B and D in screw thread figure, causes intermediate sleeve 237 He
Female thread gland 236 bears bigger axial force, affects the accuracy that roll axially positions simultaneously, reduces making of milling train
Use the life-span.
Axial direction positioning device 3 shown in Figure 10, Figure 11, cylindrical shaft 33 is arranged on bearing block 32 side, with side
Shape slide block 34 forms revolute pair, and the slip that pressure key 35 realizes square slider 34 is spacing, the centrage of cylindrical shaft 33
By roll bearing central point, when bearing block 32 trickle revolution disturbance, cylindrical shaft 33 is in square slider 34
Turning round, this cylindrical articulation face is born rolling axial force, is conducted to the side elevation of square slider 34, the side of square slider
Facade is transmitted to axial force to support on seat 31, and then moves on the basis of base 5 is transmitted to milling train by milling train.Real
Now rationally the most axially position, improve rolling accuracy.
Guide beam 4 shown in Figure 12 and milling train are moved base 5 and are fixed by spacing seam and connecting bolt 42, are formed
Firmly overall structure, can preferably dissolve the horizontal torsion power produced when guide and guard guide rolled piece, and on the basis of being transmitted to,
Ensure the stable operation of the operation of rolling；The bolt hole that guide crossbeam 41 and milling train move between base 5 is designed to elongated hole,
The adjustment up and down of guide beam height is realized by the bolt 43 that adjusts on guide crossbeam 41 top.Guide and guard slide 44 with lead
Defend the fixing of crossbeam 41 and see ZL 201520514886.1 patent.
Claims (5)
1. axial accurate positioning and there is the short stress path rolling mill of high rigidity, including:
Roll gap regulation reduction box (1), milling train movement (2), axial direction positioning device (3), guide and guard
Beam (4), milling train move base (5)；It is characterized in that, roll gap regulation reduction box (1)
Be arranged on the top of milling train movement (2), axial direction positioning device (3) by support seat (31),
Cylindrical shaft (33) and square slider (34) composition；Milling train movement (2) is by supporting seat
(31) move base (5) with milling train to be connected, guide crossbeam (41) by spacing seam,
Connecting bolt (43) is arranged on milling train and moves on base (5).
Axial accurate positioning the most according to claim 1 and have high rigidity short should
Line of force milling train, it is characterised in that: milling train movement (2) is by tie system (21) and roller
System (22) composition；Tie system (21) is roller system (22) and supports seat (31) string
It is linked to together, forms the agent structure of rolling.
Axial accurate positioning the most according to claim 2 and have high rigidity short should
Line of force milling train, it is characterised in that: described milling train movement (2) includes tie system (21)
With roller system (22), tie system (21) is roller system (22) and supports seat (31)
It is connected in series together, forms the agent structure of rolling；Copper nut (211) in tie system (21)
And formed hinged by the face of cylinder or sphere between bearing ring (212), copper nut (211) and
Bearing ring (212) is gone here and there on pull bar (213).
Axial accurate positioning the most according to claim 1 and have high rigidity short should
Line of force milling train, it is characterised in that: the cylindrical shaft (33) of axial direction positioning device (3) is arranged
In the side of bearing block (32), form revolute pair, square slider (34) with square slider (34)
It is arranged in the slideway supporting seat (31).
Axial accurate positioning the most according to claim 1 and have high rigidity short should
Line of force milling train, it is characterised in that: the guide crossbeam (41) in guide beam (4) is by spacing
Seam and connecting bolt (43) are installed to milling train and move on base (5), connecting bolt (43)
Being fixed one firm entirety of formation, guide crossbeam (41) and milling train move base
(5) bolt hole between is designed to elongated hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620468869.3U CN205798002U (en) | 2016-05-19 | 2016-05-19 | Axially accurate positioning and there is the short stress path rolling mill of high rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620468869.3U CN205798002U (en) | 2016-05-19 | 2016-05-19 | Axially accurate positioning and there is the short stress path rolling mill of high rigidity |
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| Publication Number | Publication Date |
|---|---|
| CN205798002U true CN205798002U (en) | 2016-12-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620468869.3U Expired - Fee Related CN205798002U (en) | 2016-05-19 | 2016-05-19 | Axially accurate positioning and there is the short stress path rolling mill of high rigidity |
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| Country | Link |
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| CN (1) | CN205798002U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880292A (en) * | 2016-05-19 | 2016-08-24 | 北京首钢国际工程技术有限公司 | Short stress path rolling mill with precise axial positioning and high rigidity |
| CN106670244A (en) * | 2017-02-15 | 2017-05-17 | 北京京诚瑞信长材工程技术有限公司 | Guiding and guarding clamping device and rolling machine |
| CN106734220A (en) * | 2017-01-16 | 2017-05-31 | 中冶华天南京工程技术有限公司 | Rolling-mill housing base device |
| CN107081338A (en) * | 2017-05-27 | 2017-08-22 | 天津天重中直科技工程有限公司 | A kind of support meanss of short stress rolling mill |
| CN107138534A (en) * | 2017-06-30 | 2017-09-08 | 马鞍山市银鼎机械制造有限公司 | A kind of removing method of short stress path rolling mill and its thread pitch |
| CN107413855A (en) * | 2017-06-30 | 2017-12-01 | 马鞍山市银鼎机械制造有限公司 | A kind of short stress path rolling mill eliminates thread pitch bascule |
| CN111644473A (en) * | 2020-06-05 | 2020-09-11 | 科赫工业设备技术（上海）有限公司 | Green and environment-friendly guide and guard structure of Z-shaped asymmetric steel sheet pile continuous rolling mill |
| CN112570457A (en) * | 2020-11-30 | 2021-03-30 | 天津市中重科技工程有限公司 | Novel short-stress pull rod prestress universal rolling mill |
-
2016
- 2016-05-19 CN CN201620468869.3U patent/CN205798002U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880292A (en) * | 2016-05-19 | 2016-08-24 | 北京首钢国际工程技术有限公司 | Short stress path rolling mill with precise axial positioning and high rigidity |
| CN106734220A (en) * | 2017-01-16 | 2017-05-31 | 中冶华天南京工程技术有限公司 | Rolling-mill housing base device |
| CN106670244A (en) * | 2017-02-15 | 2017-05-17 | 北京京诚瑞信长材工程技术有限公司 | Guiding and guarding clamping device and rolling machine |
| CN106670244B (en) * | 2017-02-15 | 2018-12-18 | 北京京诚瑞信长材工程技术有限公司 | A kind of guide and guard clamping device and milling train |
| CN107081338A (en) * | 2017-05-27 | 2017-08-22 | 天津天重中直科技工程有限公司 | A kind of support meanss of short stress rolling mill |
| CN107138534A (en) * | 2017-06-30 | 2017-09-08 | 马鞍山市银鼎机械制造有限公司 | A kind of removing method of short stress path rolling mill and its thread pitch |
| CN107413855A (en) * | 2017-06-30 | 2017-12-01 | 马鞍山市银鼎机械制造有限公司 | A kind of short stress path rolling mill eliminates thread pitch bascule |
| CN111644473A (en) * | 2020-06-05 | 2020-09-11 | 科赫工业设备技术（上海）有限公司 | Green and environment-friendly guide and guard structure of Z-shaped asymmetric steel sheet pile continuous rolling mill |
| CN112570457A (en) * | 2020-11-30 | 2021-03-30 | 天津市中重科技工程有限公司 | Novel short-stress pull rod prestress universal rolling mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20190519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |