CN107470359B - Horizontal force supporting mechanism for working roller of eighteen-roller mill - Google Patents
Horizontal force supporting mechanism for working roller of eighteen-roller mill Download PDFInfo
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- CN107470359B CN107470359B CN201710601006.8A CN201710601006A CN107470359B CN 107470359 B CN107470359 B CN 107470359B CN 201710601006 A CN201710601006 A CN 201710601006A CN 107470359 B CN107470359 B CN 107470359B
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- hydraulic cylinder
- pull hydraulic
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- 230000007246 mechanism Effects 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
-
- 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
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/028—Sixto, six-high stands
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a horizontal force supporting mechanism of a working roll of a eighteen-roller rolling mill, which is arranged at an inlet and an outlet of each working roll in pairs and symmetrically arranged about a steel wire passing through the rolling mill; the device is characterized by comprising a vertical push-pull hydraulic cylinder and a horizontal push-pull hydraulic cylinder, wherein the two push-pull hydraulic cylinders form a connecting rod sliding block structure, the tail end of the connecting rod sliding block structure is provided with a side support roller box, and the side support roller box mainly comprises a main backing bearing, a secondary backing bearing, a side support roller and a roller box frame; when in operation, the side supporting roller is contacted with the working roller, and the rolling horizontal force is conducted by the side supporting roller and is born by the two push-pull hydraulic cylinders. The internal structure layout of the rolling mill is more reasonable, the roll replacement is convenient and quick, and the control is more flexible.
Description
Technical Field
The invention belongs to the field of metallurgical equipment, and particularly relates to a novel horizontal force supporting mechanism for a working roll of a eighteen-roller rolling mill.
Background
The eighty-eighth rolling mill is an important model for producing cold-rolled strip steel, has obvious advantages for rolling materials which are difficult to deform and extremely thin strips, but the roller diameter of a working roller is smaller, the horizontal rigidity is difficult to ensure, and the horizontal deflection of the working roller is ensured to be within an allowable value range during rolling by horizontally moving the working roller and additionally arranging side supporting structures on two sides of the working roller. The side support structure is relatively heavy and strong because of the relatively large horizontal forces it is subjected to, and in contact with the work rolls, the rolls must be selected to be able to rotate relative to each other for direct support. The existing eighteen-roller machine side support mainly has two forms, one of the forms is to directly push the side support roller box to the working position to support the working roller by a hydraulic cylinder, the scheme is difficult to design the horizontal movement of the working roller, all horizontal forces are borne by the side support, the side support structure is huge, the internal space of the rolling mill is smaller, the working roller and the middle roller need to be completely removed from the frame when the side support back lining bearing is replaced, the side support roller box can be replaced, the time and the labor are wasted, and the production efficiency is influenced; in addition, because the side support is hung on the middle roller bearing seat, the side support can move when the middle roller needs to bend, but at the moment, the side support beam tightly props against the side support on the working roller, interference can occur between the side support roller and the working roller or relative sliding under larger positive pressure can occur, the bending effect of the middle roller is affected, the roller surface abrasion is increased, the service life of the roller is reduced, and the investment cost is increased.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to overcome the defects of the eighteen rolling mill in the prior art, the invention provides the horizontal force supporting mechanism for the working rolls of the eighteen rolling mill, so that the internal structure layout of the rolling mill is more reasonable, the roll replacement is convenient and quick, and the control is more flexible.
In order to solve the technical problems, the invention adopts the following technical scheme:
the horizontal force supporting mechanism of the working rolls of the eighteen-roller rolling mill is arranged at the inlet and the outlet of each working roll in pairs and symmetrically arranged about the passing steel wire of the rolling mill; the device is characterized by comprising a vertical push-pull hydraulic cylinder and a horizontal push-pull hydraulic cylinder, wherein the two push-pull hydraulic cylinders form a connecting rod sliding block structure, the tail end of the connecting rod sliding block structure is provided with a side support roller box, and the side support roller box mainly comprises a main backing bearing, a secondary backing bearing, a side support roller and a roller box frame; when in operation, the side supporting roller is contacted with the working roller, and the rolling horizontal force is conducted by the side supporting roller and is born by the two push-pull hydraulic cylinders.
Further, a vertical slideway is arranged below the vertical push-pull hydraulic cylinder in a straight line with a piston rod of the vertical push-pull hydraulic cylinder, and the tail end of the piston rod of the vertical push-pull hydraulic cylinder is connected with a vertical sliding block, so that the vertical sliding block can slide up and down along the vertical slideway, and meanwhile, a rotary hinge shaft is arranged on the vertical sliding block, and a connecting rod suspension is connected with the rotary hinge shaft and can rotate freely around the rotary hinge shaft; the inside horizontal direction of the horizontal push-pull hydraulic cylinder is provided with a horizontal slideway which is in a straight line with the piston rod, the tail end of the piston rod of the horizontal push-pull hydraulic cylinder is connected with a horizontal sliding block, the horizontal sliding block can slide back and forth along the horizontal slideway along a steel wire, the horizontal sliding block is provided with a hinge shaft sliding rod, a connecting rod suspension can slide in the hinge shaft sliding rod, and meanwhile the hinge shaft sliding rod can rotate around a hinge shaft on the horizontal sliding block.
Furthermore, the hinge shaft slide bar is in a block shape with a triangular section, one vertex of the hinge shaft slide bar is hinged on the horizontal slide block, a slide way is arranged at a position parallel to the side corresponding to the vertex, and the connecting rod suspension passes through the slide way and can slide in the hinge shaft slide bar along the slide way.
Further, the vertical push-pull hydraulic cylinder is arranged on the inner side of the frame housing, the vertical slideway and the horizontal slideway are both fixed on the frame housing, and the horizontal push-pull hydraulic cylinder is fixedly arranged on the frame housing.
Further, displacement sensors are arranged in the vertical push-pull hydraulic cylinder and the horizontal push-pull hydraulic cylinder.
Further, when the lateral support needs to support the working roller, the vertical push-pull hydraulic cylinder and the horizontal push-pull hydraulic cylinder act simultaneously, the whole lateral support roller box moves forward along a specific fitting curve, and the distance between the lateral support roller box and the steel passing wire and the upper middle roller and the lower middle roller is kept to be set safely and not to interfere in the forward moving process.
Compared with the prior art, the invention has the following beneficial effects:
the eighty-eight roller mill is a cold rolling mill for rolling metal strips, lateral supports are additionally arranged on two sides of a working roller in order to reduce horizontal deflection of the working roller, the lateral supports are of a connecting rod sliding block structure, and the lateral supports can approach along a fitting path under the action of a vertical push-pull hydraulic cylinder (internally provided with a displacement sensor) and a horizontal push-pull hydraulic cylinder and finally support the working roller. The side supporting roller box connected with the front end of the horizontal force supporting mechanism of the working roller of the eighteen-roller rolling mill can be independently replaced. The side support roller box mainly comprises a main backing bearing (large stress), a secondary backing bearing (relatively small stress), a side support roller and a roller box frame, wherein the side support roller and the working roller are contacted and bear horizontal force during working, and finally the horizontal force is born by a vertical slideway, a horizontal slideway and two hydraulic cylinders through conduction, so that the distribution of rolling horizontal force is ensured.
The lateral support can also meet the horizontal function of the working roll, and the two side support rolls are driven to push the working roll to move to a preset position through the combined movement of the two side vertical push-pull hydraulic cylinders and the horizontal push-pull hydraulic cylinders, so that the working roll is always in a tightly propped state in the whole moving process, and stable translation is maintained. During rolling, although the working rolls are subjected to horizontal force towards the inlet side, in order to prevent accidental accidents, meanwhile, the hydraulic cylinders on two sides are required to be locked for equipment safety and finished product quality, so that the two sides of the working rolls are subjected to supporting force, and unstable rotation of the working rolls is avoided.
The lateral support can safely and reliably move the connecting rod suspension and the lateral support roller box out of the movement range of the middle roller bearing seat through the driving element, the movement process of the lateral support is very similar to that of 'reversing and warehousing' in normal life, and the lateral support has displacement and rotation in the vertical and horizontal directions, so that the roller changing speed can be effectively improved, the lateral support roller box can be independently replaced, and the trouble operation that the middle roller is removed from the rack firstly is avoided.
The fitting path of the lateral support vertical push-pull hydraulic cylinder and the horizontal push-pull hydraulic cylinder is controlled by a computer program, the lateral support movement track under various working conditions (limiting conditions) is programmed by the program, then the lateral support movement track is embedded into the whole rolling mill control system, and finally the action is completed by an executing element. The whole movement process of the lateral support can be controlled by a computer, the position is accurate, the movement path is optional, the interference between the lateral support and equipment in the movement process of the lateral support is avoided, and meanwhile, the most important point is that the available working roll diameter range of the eighteen-roll mill is wider, the variety of rolled strip steel products is expanded, the applicability and the universality of the mill are enhanced, and the return on investment is improved.
Drawings
FIG. 1 is a schematic view of an eighteen-roll mill side support structure of the present invention;
FIG. 2 is a schematic view of the roll change position side support position of the eighteen-high mill of the present invention;
in the embodiments of the present invention and in fig. 1-2, the same reference numerals are used in the following description because the inlet and outlet devices are symmetrical:
1-frame housing 2-vertical push-pull hydraulic cylinder 3-vertical slideway
4-rotary hinge shaft 5-connecting rod suspension 6-roller bending cylinder block
7-upper supporting roller 8-upper middle roller 9-hinged sliding bar
10-horizontal push-pull hydraulic cylinder 11-main backing bearing
12-side support roller box 13-secondary backing bearing
14-side support roller 15-working roller
16-lower intermediate roll 17-lower support roll
18-intermediate roller bearing block 19-vertical slide block
20-horizontal slide block 21-horizontal slideway.
Detailed Description
Embodiments of the present invention are further described below in conjunction with fig. 1-2:
in the invention, a eighty-eight rolling mill is a cold rolling mill for rolling metal strips, lateral supports are additionally arranged at two sides of a working roll 15 in order to reduce horizontal deflection of the working roll 15, the lateral supports are of a connecting rod sliding block structure, and the lateral supports can approach along a fitting path under the action of a vertical push-pull hydraulic cylinder 2 (internally provided with a displacement sensor) and a horizontal push-pull hydraulic cylinder 10 and finally support the working roll 15. The specific structure of the lateral support is as follows: the vertical push-pull hydraulic cylinder 2 is arranged at the inner side of the frame housing 1, a piston rod of the vertical push-pull hydraulic cylinder is connected with a vertical sliding block 19, the vertical sliding block 19 can slide up and down along a vertical sliding way 3 fixed on the frame housing 1, meanwhile, a rotary hinge shaft 4 is designed on the vertical sliding block 19, and a connecting rod suspension 5 is connected with the rotary hinge shaft 4 and can rotate freely around the rotary hinge shaft 4. The horizontal push-pull hydraulic cylinder 10 (the displacement sensor is arranged in the horizontal push-pull hydraulic cylinder) is fixedly arranged on the frame housing 1, a piston rod of the horizontal push-pull hydraulic cylinder is connected with the horizontal sliding block 20, the horizontal sliding block 20 can slide back and forth along the horizontal sliding way 21 fixed on the frame housing 1, the horizontal sliding block 20 is provided with the hinged sliding rod 9, the connecting rod suspension 5 can slide in the hinged sliding rod 9, and meanwhile the hinged sliding rod 9 can rotate around a hinged shaft in the horizontal sliding block 20. The front end of the connecting rod suspension 5 is connected with a side supporting roller box 12, and the side supporting roller box 12 can be independently replaced. The side support roller box 12 mainly comprises a main backing bearing 11 (high stress), a secondary backing bearing 13 (relatively low stress) and a side support roller 14, wherein the side support roller 14 and a working roller 15 are contacted and bear horizontal force when in operation, and finally the horizontal force is born by the vertical slideway 3 and the horizontal slideway 21 and the two hydraulic cylinders 2 and 10 through conduction.
When the lateral support needs to support the working roller 15, the vertical push-pull hydraulic cylinder 2 and the horizontal push-pull hydraulic cylinder 10 act simultaneously, the whole lateral support roller box 12 and the connecting rod suspension 5 move forward along a specific fitting curve, and the distance between the lateral support roller box and the steel passing wire and the upper middle roller 8 and the lower middle roller 16 is kept to be set safe and non-interference in the forward moving process. Due to the vertical and horizontal displacement of the lateral support during the forward movement, rotation occurs. The specific process is as follows: the vertical push-pull hydraulic cylinder 2 pushes the vertical sliding block 19 to slide in the vertical sliding 3 channels, the connecting rod suspension 5 connected with the rotary hinge shaft 4 and the side supporting roller box 12 arranged on the vertical sliding block are rotated, meanwhile, the horizontal push-pull hydraulic cylinder 10 also pushes the horizontal sliding block 20 to slide forwards in the horizontal slideway 21, the hinged sliding rod 9 designed and arranged on the horizontal sliding block 20 rotates around the hinge shaft, and meanwhile, the connecting rod suspension 5 can slide freely in the hinged sliding rod 9 due to the horizontal displacement of the lateral support, so as to compensate the horizontal displacement of the lateral support. When the vertical push-pull hydraulic cylinder 2 and the horizontal push-pull hydraulic cylinder 10 reach the working positions and then are locked, the lateral supporting positions are fixed, and the working roller 15 is abutted against the lateral supporting roller 14 by horizontal force during working, so that the horizontal deflection of the working roller 15 is effectively reduced. The lateral support of the inlet and outlet acts simultaneously during operation, ensuring that the working rolls 15 are clamped during operation and in a stable rolling state. When the roll is required to be replaced, the lateral support is moved to a roll replacing position which does not affect roll replacement through the combined movement of the hydraulic cylinders 2 and 10, so that the roll replacement time is effectively shortened, and the production efficiency is improved.
The fitting path of the lateral support vertical push-pull hydraulic cylinder 2 and the horizontal push-pull hydraulic cylinder 10 is that the lateral support movement track under various working conditions (limiting conditions) is programmed through a computer program, then the lateral support movement track is embedded into the whole rolling mill control system, and finally the action is completed by an executing element. The whole movement process of the lateral support can be controlled by a computer, the position is accurate, the movement path is various, interference with other equipment in the movement process of the lateral support is avoided, and meanwhile, the most important point is that the multi-position control and adjustment of two hydraulic cylinders enable the available working roll diameter range of the eighteen-roll mill to be wider, the variety of rolled strip steel products is expanded, the applicability and universality of the mill are enhanced, and the return on investment is improved.
The invention has the advantages of ingenious structure, convenient operation and maintenance, capability of ensuring good plate shape of the finished product, quick roll changing, time saving and labor saving, and wide market prospect. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The horizontal force supporting mechanism of the working rolls of the eighteen-roller rolling mill is arranged at the inlet and the outlet of each working roll in pairs and symmetrically arranged about the passing steel wire of the rolling mill; the device is characterized by comprising a vertical push-pull hydraulic cylinder and a horizontal push-pull hydraulic cylinder, wherein the two push-pull hydraulic cylinders form a connecting rod sliding block structure, the tail end of the connecting rod sliding block structure is provided with a side support roller box, and the side support roller box comprises a main backing bearing, a secondary backing bearing, a side support roller and a roller box frame; when in operation, the side supporting roller is contacted with the working roller, and the rolling horizontal force is conducted by the side supporting roller and is born by the two push-pull hydraulic cylinders.
2. The eighty-high mill work roll horizontal force support mechanism of claim 1, wherein: the lower part of the vertical push-pull hydraulic cylinder and a piston rod of the vertical push-pull hydraulic cylinder are provided with a vertical slideway in a straight line, the tail end of the piston rod of the vertical push-pull hydraulic cylinder is connected with a vertical sliding block, so that the vertical sliding block can slide up and down along the vertical slideway, and meanwhile, a rotary hinge shaft is arranged on the vertical sliding block, and a connecting rod suspension is connected with the rotary hinge shaft and can rotate around the rotary hinge shaft freely; the inside horizontal direction of the horizontal push-pull hydraulic cylinder is provided with a horizontal slideway which is in a straight line with the piston rod, the tail end of the piston rod of the horizontal push-pull hydraulic cylinder is connected with a horizontal sliding block, the horizontal sliding block can slide back and forth along the horizontal slideway along a steel wire, the horizontal sliding block is provided with a hinge shaft sliding rod, a connecting rod suspension can slide in the hinge shaft sliding rod, and meanwhile the hinge shaft sliding rod can rotate around a hinge shaft on the horizontal sliding block.
3. The eighty-high mill work roll horizontal force support mechanism of claim 2, wherein: the hinge shaft sliding rod is in a block shape with a triangular section, one vertex of the hinge shaft sliding rod is hinged on the horizontal sliding block, a slide way is arranged at a position parallel to the side corresponding to the vertex, and the connecting rod suspension passes through the slide way and can slide in the hinge shaft sliding rod along the slide way.
4. The eighty-high mill work roll horizontal force support mechanism of claim 1 or 2, wherein: the vertical push-pull hydraulic cylinder is arranged on the inner side of the frame housing, the vertical slide way and the horizontal slide way are both fixed on the frame housing, and the horizontal push-pull hydraulic cylinder is fixedly arranged on the frame housing.
5. The eighty-high mill work roll horizontal force support mechanism of claim 1, wherein: the vertical push-pull hydraulic cylinder and the horizontal push-pull hydraulic cylinder are internally provided with displacement sensors.
6. The eighty-high mill work roll horizontal force support mechanism of claim 1, wherein: when the lateral support needs to support the working roller, the vertical push-pull hydraulic cylinder and the horizontal push-pull hydraulic cylinder act simultaneously, the whole lateral support roller box moves forward along a specific fitting curve, and the distance between the lateral support roller box and the steel passing wire and the upper middle roller and the lower middle roller is kept to be set safely and not to interfere in the forward moving process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601006.8A CN107470359B (en) | 2017-07-21 | 2017-07-21 | Horizontal force supporting mechanism for working roller of eighteen-roller mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601006.8A CN107470359B (en) | 2017-07-21 | 2017-07-21 | Horizontal force supporting mechanism for working roller of eighteen-roller mill |
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| Publication Number | Publication Date |
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| CN107470359A CN107470359A (en) | 2017-12-15 |
| CN107470359B true CN107470359B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710601006.8A Active CN107470359B (en) | 2017-07-21 | 2017-07-21 | Horizontal force supporting mechanism for working roller of eighteen-roller mill |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500091B (en) * | 2018-12-06 | 2024-01-26 | 中冶南方工程技术有限公司 | Side supporting mechanism for working roll of eighteenth roll mill, using method of side supporting mechanism and eighteenth roll mill |
| AT523437B1 (en) * | 2020-12-09 | 2021-08-15 | Andritz Metals Gemany Gmbh | ROLLED FRAMEWORK |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101137A (en) * | 1985-04-01 | 1987-01-24 | 株式会社日立制作所 | Milling train |
| US4781052A (en) * | 1985-12-16 | 1988-11-01 | Sms Schliemann-Siemag Aktiengesellschaft | Actuator device for axially moving rolling mill rolls |
| CN102513374A (en) * | 2011-12-29 | 2012-06-27 | 一重集团大连设计研究院有限公司 | Transverse multi-section crossed work roller plate shape regulating and controlling method of steel strip rolling mill and regulating and control device thereof |
| CN203316479U (en) * | 2013-07-04 | 2013-12-04 | 北京京诚之星科技开发有限公司 | Cold-rolled strip mill |
-
2017
- 2017-07-21 CN CN201710601006.8A patent/CN107470359B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101137A (en) * | 1985-04-01 | 1987-01-24 | 株式会社日立制作所 | Milling train |
| US4781052A (en) * | 1985-12-16 | 1988-11-01 | Sms Schliemann-Siemag Aktiengesellschaft | Actuator device for axially moving rolling mill rolls |
| CN102513374A (en) * | 2011-12-29 | 2012-06-27 | 一重集团大连设计研究院有限公司 | Transverse multi-section crossed work roller plate shape regulating and controlling method of steel strip rolling mill and regulating and control device thereof |
| CN203316479U (en) * | 2013-07-04 | 2013-12-04 | 北京京诚之星科技开发有限公司 | Cold-rolled strip mill |
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| CN107470359A (en) | 2017-12-15 |
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