CN114130831A - Device and method for calibrating position of step pad on rolling mill - Google Patents
Device and method for calibrating position of step pad on rolling mill Download PDFInfo
- Publication number
- CN114130831A CN114130831A CN202111441779.7A CN202111441779A CN114130831A CN 114130831 A CN114130831 A CN 114130831A CN 202111441779 A CN202111441779 A CN 202111441779A CN 114130831 A CN114130831 A CN 114130831A
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- calibration
- working position
- step pad
- rolling mill
- calibrating
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Automatic Control Of Machine Tools (AREA)
Abstract
The invention discloses a device and a method for calibrating the position of a step pad on a rolling mill, which are used for calibrating the working position of the step pad on the rolling mill. The calibration device is provided with a first calibration area and a second calibration area which are symmetrical to each other, the first calibration area is provided with an L-shaped handle, a calibration block is arranged at the first end of the L-shaped handle, a handheld ring is arranged at the second end of the L-shaped handle, the L-shaped handle is provided with an anti-falling connecting rod, and the anti-falling connecting rod of the first calibration area and the anti-falling connecting rod of the second calibration area are fixed through a positioning pin; the upper step base plate adjusting part is provided with an L-shaped fixed frame, a driving hydraulic cylinder and a moving frame which are arranged on the rolling mill, and a calibration device is arranged between the driving hydraulic cylinder and the moving frame; the step pad position is calibrated, the problems of difficult calibration, long time, inaccuracy and the like of the step pad position on the hot rolling finishing mill group are effectively solved, the calibration precision can reach within 1mm, and the problems that the roll changing time is prolonged and the production is influenced due to inaccurate calibration of the step pad position are reduced.
Description
Technical Field
The invention belongs to the technical field of positioning of step pad positions, and particularly relates to a device and a method for calibrating a step pad position on a rolling mill.
Background
The screw-down system of the finishing mill unit of the hot rolling line F1-F7 mainly comprises an upper step cushion plate, an HGC hydraulic cylinder 15, an upper supporting roller, a lower supporting roller, an upper working roller and a lower working roller, wherein the supporting roller and the working roller are periodically ground off and then used on the machine, and in order to compensate the change that the roller diameter is gradually reduced by multiple times of grinding, each mill is provided with an upper step cushion plate thickness adjusting device.
The upper step pad thickness adjusting device is composed of a driving hydraulic cylinder 6 with a displacement sensor, an L-shaped fixed frame 3, a moving frame 7, step pad plates (8-10) and the like, as shown in figure 1. The step backing plate has tertiary (8-10) to constitute, in addition in order to cooperate the change of accomplishing working roll, backing roll, HGC pneumatic cylinder 15, goes up the step backing plate device and has 5 stations in total, is first work position 13, second work position 12, third work position 16, fourth work position 17 and fifth work position 11 respectively, wherein: the first working position 13 is a supporting roller replacing position, the second working position 12 is a working roller and HGC hydraulic cylinder 15 replacing position, the third working position 16, the fourth working position 17 and the fifth working position 11 are three steel rolling positions (step cushion plates with proper thickness are selected according to the diameter of a roller system), 5 stations are driven by the driving hydraulic cylinder 6 to horizontally move the moving frame 7 to the central line of the working position, and the central line of the working position is located at the position of the second working position 12; after debugging and calibration, the control system transmits a position signal (displacement) to the displacement sensor driving the hydraulic cylinder 6 at each position to complete position positioning.
Because the sizes such as the width (179mm) of the step base plate, the center distance (180mm) of the adjacent step base plates, the distance (183mm) between the first-stage step base plate 8 and the upper lug plate 14 of the movable frame, the width (170mm) of the lugs of the HGC hydraulic cylinder 15 are basically close, and the relative height difference exists in the vertical direction, before each station is positioned, the HGC hydraulic cylinder 15 needs to move up and down, the movable frame 7 needs to move horizontally, if the horizontal positioning of each station is not accurate, the lugs of the HGC hydraulic cylinder 15 can interfere with the lug plates 14 of the movable frame and the step base plates (8-10), thereby causing the difficulty of roll replacement and prolonging the roll replacement, and influencing the production.
Therefore, in order to ensure the positional accuracy of the 5 stations, it is necessary to periodically perform positional calibration of the step pad device, particularly after maintenance and replacement of the drive hydraulic cylinder 6, the displacement sensor, the step pad, and the like. However, the position space of the step pad device in the rolling mill is narrow, the position size of the step pad device cannot be effectively observed and accurately measured, and time and labor are wasted and the step pad device cannot be accurately measured at one time in conventional calibration and verification.
Disclosure of Invention
The invention aims to provide a device and a method for calibrating the position of a step pad on a rolling mill.
The technical scheme adopted by the invention for solving the technical problems is as follows: a calibration device for the position of a step pad on a rolling mill comprises an upper step base plate adjusting part and a calibration part, wherein the calibration part is provided with a first calibration area and a second calibration area which are symmetrical to each other, the first calibration area is provided with an L-shaped handle, a calibration block is arranged at the first end of the L-shaped handle, a handheld ring is arranged at the second end of the L-shaped handle, the L-shaped handle is provided with an anti-falling connecting rod, and the anti-falling connecting rod of the first calibration area and the anti-falling connecting rod of the second calibration area are fixed through a positioning pin; the adjusting part of the upper step base plate is provided with an L-shaped fixed frame arranged on the mill housing, the driving hydraulic cylinder and the movable frame are arranged on the L-shaped fixed frame, and a marking part is arranged between the inner side of the fixed frame and the movable frame.
Specifically, the upper step base plate adjusting part is provided with a first step base plate, a second step base plate, a third step base plate, a first working position, a second working position and a third working position.
Specifically, the rolling mill is provided with an upper support roll and an HGC hydraulic cylinder.
Specifically, the rolling mill is further provided with a fourth working position and a fifth working position.
A calibration method for the position of a step pad on a rolling mill comprises the following steps:
1) adjusting an upper step base plate adjusting part to enable a fifth working position to be in a working state, stopping a medium power source, handling operation tickets, cleaning the inner side of an L-shaped fixed frame at the transmission side of the step base, the end part of a movable frame and a contact surface for placing a calibration block, and performing oil coating protection;
2) on the transmission side ladder platform of the rolling mill, a calibration block is placed on the inner side of an L-shaped fixed frame and is close to the end part, and a positioning pin is inserted in the middle position of an anti-falling connecting rod;
3) adjusting an upper step base plate adjusting part to enable the second working position to be in a working position, driving an HGC hydraulic cylinder to rise to a high position by an upper supporting roller, driving the hydraulic cylinder to slowly drive the moving frame to enable the first working position to be in the working position, and enabling the outer side of the end part of the moving frame to be just close to the calibration block, so that no gap is formed among the outer side of the end part of the moving frame, the calibration block and the inner side of the end part of the L-shaped fixed frame;
4) calibrating the displacement of the displacement sensor of the driving hydraulic cylinder, and calibrating the displacement of the first working position in the control system;
5) operating the step pad to enable the second working position to be in the working position, stopping the power source and hanging the brand, disassembling the positioning pin at the middle position of the anti-falling connecting rod of the calibration block, and removing the calibration block.
The invention has the following beneficial effects: the device and the method for calibrating the position of the step pad on the rolling mill directly calibrate the position of the step pad, effectively solve the problems of difficult calibration, long time, inaccuracy and the like of the position of the step pad on a hot rolling finishing mill group, and the calibration precision can reach within 1mm so as to reduce the influence on production caused by prolonging the roll changing time due to inaccurate calibration of the position of the step pad; the existing calibration can also be effectively verified.
Drawings
Fig. 1 is a schematic structural view of an upper step pad adjustment portion.
Fig. 2 is a schematic structural view of the marking section.
Fig. 3 is a side view of a calibration block.
Fig. 4 is a schematic structural view of the calibration part mounted on the upper step adjustment part.
In the figure: 1- "L" shaped handle; 2-calibration block; 3- "L" shape fixed frame; 4-anti-drop connecting rod; 5-positioning pins; 6-driving a hydraulic cylinder; 7-moving the frame; 8-first-stage step base plate; 9-a second-stage step backing plate; 10-third-stage step base plate; 11-fifth working position; 12-a second working position; 13-a first working position; 14-ear plate; 15-HGC hydraulic cylinders; 16-a third working position; 17-fourth work site; 18-hand ring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 2-4, a calibration device for the position of a step pad on a rolling mill comprises 2 calibration blocks 2, wherein each calibration block 2 is provided with an L-shaped handle 1, a telescopic anti-drop connecting rod 4 is arranged between the L-shaped handles 1, a positioning pin 5 is inserted into the middle position of the anti-drop connecting rod 4, the distance between the calibration blocks 2 is not changed, and the calibration blocks 2 are prevented from dropping; when the calibration block 2 is not used, the positioning pin 5 is pulled out, and the two calibration blocks can be separately stored. The single calibration block 2 is of a cuboid structure, the roughness of a processing surface is Ra6.3, the length of the calibration block is the size between the outer side of the movable frame 7 and the inner side of the L-shaped fixed frame 3 when the stepped pad device is arranged at the station 13 of the first working position, the width of the calibration block is the width size of the single-side inner side of the L-shaped frame, and the height of the calibration block is about half of the height of the movable frame 7.
A calibration method for the position of a step pad on a rolling mill comprises the following steps:
1) adjusting an upper step base plate adjusting part to enable a fifth working position to be in a working state, stopping a medium power source, handling operation tickets, cleaning the inner side of an L-shaped fixed frame at the transmission side of the step base, the end part of a movable frame and a contact surface for placing a calibration block, and performing oil coating protection;
2) on the transmission side ladder platform of the rolling mill, a calibration block is placed on the inner side of an L-shaped fixed frame and is close to the end part, and a positioning pin is inserted in the middle position of an anti-falling connecting rod;
3) adjusting an upper step base plate adjusting part to enable the second working position to be in a working position, driving an HGC hydraulic cylinder to rise to a high position by an upper supporting roller, driving the hydraulic cylinder to slowly drive the moving frame to enable the first working position to be in the working position, and enabling the outer side of the end part of the moving frame to be just close to the calibration block, so that no gap is formed among the outer side of the end part of the moving frame, the calibration block and the inner side of the end part of the L-shaped fixed frame;
4) calibrating the displacement of the displacement sensor of the driving hydraulic cylinder, and calibrating the displacement of the first working position in the control system;
5) operating the step pad to enable the second working position to be in the working position, stopping the power source and hanging the brand, disassembling the positioning pin at the middle position of the anti-falling connecting rod of the calibration block, and removing the calibration block.
(6) An operator completes the operation flow of one-time work roll changing and rolling mill calibration according to the work roll changing flow, and the calibration accuracy is verified;
(7) during the calibration period, the safety operation rules need to be strictly executed, the procedures of related medium power sources and operation tickets are handled, and the operation safety during the calibration period is ensured.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (5)
1. The calibration device for the position of the upper step pad of the rolling mill is characterized by comprising an upper step pad plate adjusting part and a calibration part, wherein the calibration part is provided with a first calibration area and a second calibration area which are symmetrical to each other, the first calibration area is provided with an L-shaped handle, a calibration block is arranged at the first end of the L-shaped handle, a hand-held ring is arranged at the second end of the L-shaped handle, an anti-falling connecting rod is arranged on the L-shaped handle, and the anti-falling connecting rod of the first calibration area and the anti-falling connecting rod of the second calibration area are fixed through a positioning pin; the upper step backing plate adjusting part is provided with an L-shaped fixed frame arranged on the mill housing, the driving hydraulic cylinder and the moving frame are arranged on the L-shaped fixed frame, and a marking part is arranged between the inner side of the fixed frame and the moving frame.
2. The device for calibrating the position of the upper step pad of the rolling mill according to claim 1, wherein the adjusting part of the upper step pad is provided with a first step pad, a second step pad, a third step pad, a first working position, a second working position and a third working position.
3. The device for calibrating the position of the step pad on the rolling mill according to claim 1, wherein the rolling mill is provided with an upper support roll and an HGC hydraulic cylinder.
4. The device for calibrating the position of the upper step pad of the rolling mill according to claim 1, wherein the adjusting part of the upper step pad is further provided with a fourth working position and a fifth working position.
5. The method for calibrating the position of the step pad on the rolling mill based on the claims 1-4 is characterized by comprising the following steps:
1) adjusting an upper step base plate adjusting part to enable a fifth working position to be in a working state, stopping a medium power source, handling operation tickets, cleaning the inner side of an L-shaped fixed frame at the transmission side of the step base, the end part of a movable frame and a contact surface for placing a calibration block, and performing oil coating protection;
2) on the transmission side ladder platform of the rolling mill, a calibration block is placed on the inner side of an L-shaped fixed frame and is close to the end part, and a positioning pin is inserted in the middle position of an anti-falling connecting rod;
3) adjusting an upper step base plate adjusting part to enable the second working position to be in a working position, driving an HGC hydraulic cylinder to rise to a high position by an upper supporting roller, driving the hydraulic cylinder to slowly drive the moving frame to enable the first working position to be in the working position, and enabling the outer side of the end part of the moving frame to be just close to the calibration block, so that no gap is formed among the outer side of the end part of the moving frame, the calibration block and the inner side of the end part of the L-shaped fixed frame;
4) calibrating the displacement of the displacement sensor of the driving hydraulic cylinder, and calibrating the displacement of the first working position in the control system;
5) operating the step pad to enable the second working position to be in the working position, stopping the power source and hanging the brand, disassembling the positioning pin at the middle position of the anti-falling connecting rod of the calibration block, and removing the calibration block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111441779.7A CN114130831B (en) | 2021-11-30 | 2021-11-30 | Device and method for calibrating position of step pad on rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111441779.7A CN114130831B (en) | 2021-11-30 | 2021-11-30 | Device and method for calibrating position of step pad on rolling mill |
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| Publication Number | Publication Date |
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| CN114130831A true CN114130831A (en) | 2022-03-04 |
| CN114130831B CN114130831B (en) | 2023-05-09 |
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| CN202111441779.7A Active CN114130831B (en) | 2021-11-30 | 2021-11-30 | Device and method for calibrating position of step pad on rolling mill |
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| CN111790758A (en) * | 2020-05-29 | 2020-10-20 | 首钢京唐钢铁联合有限责任公司 | Calibration method and automatic roll changing control method for lower step pad of finishing mill |
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2021
- 2021-11-30 CN CN202111441779.7A patent/CN114130831B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2860650Y (en) * | 2005-12-01 | 2007-01-24 | 中国第二重型机械集团公司 | Rolling line height mark regulator of rolling mill |
| RU2340416C1 (en) * | 2007-06-04 | 2008-12-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" | Method of stepped rolling |
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| CN114130831B (en) | 2023-05-09 |
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