Roller deviation correction positioning process

Abstract

The present application relates to the technical field of mill air cooling roller bed deviation correction, and discloses a roller bed deviation correction positioning process method, which comprises S1 reference calibration and total data acquisition, S2 bearing seat combined positioning correction, S3 side wall plate accurate alignment and gap regulation, S4 transmission system synchronism calibration optimization, S5 hot state working condition verification and accurate fine adjustment and S6 positioning structure reinforcement and parameter solidification, and the process method accurately solves the axis deflection problem caused by bearing seat displacement: a combined positioning process of 'positioning steel plate + positioning pin + welding fixation' is adopted, a high-precision positioning steel plate with a thickness of 3-6 mm is installed between adjacent bearing seats, the left and right displacement of the bearing seat under cold state is ensured to be less than or equal to 1.5 mm and the maximum displacement under hot state is not more than 2 mm through double positioning, the deflection amplitude of the roller axis is effectively limited, the deviation hidden danger caused by displacement due to the absence of bearing seat positioning and thermal deformation is eliminated from the root, and the coaxial precision of the roller operation is ensured.

Description

Technical Field

[0001] This invention relates to the field of rolling mill air-cooled roller table deviation correction technology, specifically a roller table deviation correction and positioning process method. Background Technology

[0002] In the field of high-temperature rolling production in metallurgy, the air-cooled roller conveyor of the rolling mill is the core equipment for the subsequent conveying and cooling of high-temperature wire rod. Its operating accuracy directly determines the smoothness of wire rod conveying and the continuous efficiency of the entire production line.

[0003] However, existing air-cooled roller conveyors have key structural design flaws. The core problem lies in the lack of a dedicated positioning structure for the bearing housing and the inability to adjust the gap between the sidewalls. The roller bearing housing is fixed only by conventional screws without dedicated positioning and limiting components. Under high-temperature rolling conditions of 750-1050℃, the radial thermal expansion of the rollers can reach more than 6mm and the axial thermal elongation can exceed 30mm. Affected by this thermal deformation, the bearing housing is prone to 3-5mm of lateral displacement, directly causing the roller axis to wobble. At the same time, the sidewalls adopt a fixed welded support structure, and the installation support points are not adapted to the roller thermal deformation requirements. The gap is a fixed design value and cannot be dynamically adjusted according to the roller thermal expansion and long-term wear. Furthermore, as the first section is a critical area for wire rod conveying, the sidewall spacing is not optimized for the high incidence of deviation, making it difficult to maintain the gap between the rollers and the sidewalls within a reasonable range.

[0004] The combination of these defects makes the wire rod prone to deviation during transport due to roller axis misalignment and gap mismatch. In particular, the first section frequently experiences side plate malfunctions, which not only require frequent manual shutdowns for repair, increasing the labor intensity of the workers, but also cause a lot of production accidents, reduce the continuity of rolling production, and at the same time exacerbate the wear of roller components, increasing equipment maintenance costs and spare parts consumption. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a roller conveyor misalignment correction and positioning process, which has advantages such as eliminating the risk of misalignment caused by non-positioning of bearing seats and displacement due to thermal deformation, ensuring the coaxiality accuracy of roller operation, and solving the problem of axial runout caused by bearing seat displacement.

[0006] (II) Technical Solution To address the aforementioned issues of misalignment caused by bearing housing lack of positioning and displacement due to thermal deformation, and to ensure the coaxiality accuracy of the rollers, this invention provides the following technical solution: a roller conveyor misalignment correction and positioning process, comprising: S1 benchmark calibration and full data acquisition; S2 combined bearing housing positioning correction; S3 precise alignment and gap adjustment of side wall panels; S4 synchronization calibration and optimization of the transmission system; S5 thermal condition verification and precise fine-tuning; and S6 positioning structure reinforcement and parameter solidification. The S1 benchmark calibration and full data acquisition... First, the roller conveyor area is shut down for safety isolation. Iron oxide scale and debris are cleaned from the roller conveyor surface and around the bearing housing to ensure that the calibration operation is uninterrupted. Using the center line of the roller conveyor as a reference, a global reference coordinate system is established using a laser rangefinder to mark the theoretical axis position of each roller and the standard alignment line of the side wall plate.

[0007] Preferably, the S1 benchmark calibration and full data acquisition also includes collecting key operating data: detecting the thermal deformation parameters of the roller under high temperature conditions of 750-1050℃, controlling the radial thermal expansion to 5-8mm and the axial thermal elongation to 28-35mm; measuring the actual displacement of each bearing seat and recording the left and right offset values ​​(usually 3-5mm) in the non-positioning state; using a gap gauge to detect the actual gap between the side wall plate and the roller point by point, marking the gap deviation (greater than 6mm) and the skew position; and simultaneously recording the tension fluctuation value of the roller conveyor chain and the rotational resistance torque of the bearing to provide data support for subsequent calibration.

[0008] Preferably, the S2 bearing housing is a combined positioning and correction type: To address the issue of roller axis misalignment caused by the lack of positioning in the bearing housing, a combined positioning correction method is implemented: a 3-6mm thick high-strength positioning steel plate is installed between adjacent bearing housings. The two sides of the positioning steel plate are precision ground to ensure that the flatness error is controlled within 0.02mm, thus ensuring a tight fit with the end face of the bearing housing. The dual positioning process of "positioning pins + welding fixation" is adopted: First, the positioning steel plate and the bearing housing are precisely aligned by 2-4 sets of positioning pins to ensure that the coaxiality deviation of the bearing housing along the reference axis is ≤0.5mm; then, the positioning steel plate and the bearing housing base are intermittently welded and fixed, with a weld height of 6-8mm. After welding, the weld slag is removed and the surface is ground flat to avoid protrusions affecting the operation of the bearing housing. After calibration, the bearing seat displacement is checked again to ensure that the left and right displacement is ≤1.5mm in the cold state and the maximum displacement does not exceed 2mm in the hot state, so as to achieve precise positioning of the roller axis.

[0009] Preferably, the S3 sidewall panel features precise alignment and gap adjustment: Remove the original fixing structure of the side wall panels, and use the standard alignment line of the side wall panels in the reference coordinate system as a reference to adjust the verticality and parallelism of the side wall panels with a laser collimator. The verticality deviation is controlled within 0.3mm / m, and the parallelism deviation between the two side wall panels and the center line of the roller conveyor is ≤0.5mm. For areas prone to deviation in the first section, the side wall panels are simultaneously shifted inward by 45-65mm to reduce the effective conveying width of the first section of the roller conveyor and decrease the wire rod offset allowance. CNC cutting technology is used to trim the contact surface of the side wall panels to ensure a good fit with the rollers. The gap between the side wall panels and the rollers is adjusted by an adjustable set screw mechanism to uniformly control the gap of the entire roller conveyor to 3-5mm, with the gap deviation of the first section ≤0.3mm and the gap deviation of non-first sections ≤0.5mm. After adjustment, use high-strength bolts to fix the side wall plate to the newly added adjustable support. The installation point of the support extends 10-15mm above the roller surface to reserve space for subsequent fine-tuning.

[0010] Preferably, the synchronization calibration of the S4 transmission system is optimized: Synchronization correction of the roller conveyor system: disassemble the original transmission chain and replace it with a large-pitch chain suitable for high-speed and heavy-load conditions, ensuring that the meshing clearance between the chain and the sprocket is controlled within 0.2-0.5mm; adjust the installation position of each sprocket, and use a dial indicator to check that the end face runout of the sprocket is ≤0.3mm, ensuring that the transmission phase of all sprockets is synchronized; Replace the passive side bearing of the roller conveyor with a high-temperature resistant, high-load bearing. During installation, control the axial clearance of the bearing to be 0.15-0.25mm and lubricate it fully with high-temperature grease. Use a torque wrench to check the rotational resistance torque of each roller and ensure that the difference is ≤5N・m to achieve the synchronization and smoothness of the roller rotation and avoid roller conveyor sway caused by asynchronous transmission.

[0011] Preferably, the S5 hot-condition verification and precise fine-tuning: Start the roller conveyor and run it under cold, no-load conditions for 30-60 minutes to check the stability of the bearing housing positioning, the absence of interference in the side wall plates, and the absence of abnormal vibration in the transmission system. Record the axial running trajectory of each roller. Hot-state verification was conducted under simulated high-temperature rolling conditions: The rollers were preheated to 750-850℃ using an electric heating device. The roller conveyor was started and a simulated wire rod (with the same effective weight as the actual wire rod) was used for conveying tests. The test was conducted continuously for 2-3 hours. The running trajectory of the simulated wire rod was recorded using a high-speed camera. If slight deviation occurred, the gap of the top screw could be adjusted by using the side wall plate, or a small correction could be made to the positioning steel plate of the bearing seat until the deviation between the running trajectory of the wire rod and the reference center line under hot conditions was ≤1mm.

[0012] Preferably, the S6 positioning structure is reinforced and the parameters are fixed: After passing the hot-state verification, all positioning structures are reinforced: anti-loosening ribs are added to both sides of the bearing housing positioning steel plate, and the ribs are welded to the positioning steel plate and bearing housing with fillet welds to enhance the impact resistance and stability of the positioning structure; the side wall plate fixing bolts are tightened a second time, using anti-loosening washers + spot welding anti-loosening double protection to prevent the bolts from loosening under high-temperature conditions; After cleaning the roller conveyor calibration area, the key parameters are checked again: bearing housing coaxiality, side wall plate clearance, and transmission system synchronization all meet the requirements. Then, the baseline and calibration date are marked on the bearing housing and side wall plate, and a calibration file is established to record various calibration parameters, hot verification data, and positioning structure dimensions to provide a basis for subsequent maintenance.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a roller conveyor deviation correction and positioning process, which has the following beneficial effects: 1. This roller conveyor misalignment correction and positioning process precisely solves the problem of axial runout caused by bearing seat displacement: It adopts a combined positioning process of "positioning steel plate + positioning pin + welding fixation". A 3-6mm thick high-precision positioning steel plate is installed between adjacent bearing seats. Through double positioning, it ensures that the left and right displacement of the bearing seat is ≤1.5mm in the cold state and the maximum displacement does not exceed 2mm in the hot state. This effectively limits the runout amplitude of the roller axis and eliminates the hidden danger of misalignment caused by the lack of positioning of the bearing seat and displacement caused by thermal deformation from the root, thus ensuring the coaxiality accuracy of the roller operation.

[0014] 2. The roller conveyor deviation correction and positioning process achieves dynamic adaptation and precise control of the side wall plate gap: By optimizing the installation foundation of the side wall plate, the support point is extended 10-15mm above the roller surface and an adjustable structure is adopted. Combined with the inward translation design of the first section of the side wall plate by 45-65mm, the gap of the entire roller conveyor is uniformly controlled at 3-5mm, and the gap deviation of the first section is ≤0.3mm. This not only adapts to the radial thermal expansion of the roller by 5-8mm, but also solves the drawback of the original fixed and unadjustable gap. Daily fine-tuning can be carried out through the adjustable set screw, completely eliminating the phenomenon of wire rod and side wall plate snagging, and especially improving the high incidence of deviation in the first section.

[0015] 3. The roller conveyor deviation correction and positioning process improves the synchronization and operational stability of the transmission system: by replacing the large-pitch heavy-duty chain with a high-temperature resistant and high-load-bearing passive side bearing, the chain meshing clearance is precisely controlled at 0.2-0.5mm and the bearing axial clearance at 0.15-0.25mm, ensuring that the difference in rotational resistance torque between each roller is ≤5N・m. This effectively solves the problem of transmission asynchrony caused by easy breakage of the original transmission chain and bearing jamming and wear, ensuring the smoothness of roller rotation and further avoiding roller conveyor deviation caused by transmission imbalance.

[0016] 4. The roller conveyor misalignment correction and positioning process ensures the adaptability and long-term effectiveness of the correction effect under all working conditions: a dual verification process of "cold no-load + hot load" is designed. The hot verification simulates a high-temperature working condition of 750-850℃, runs continuously for 2-3 hours, and monitors the trajectory with a high-speed camera to ensure that the wire rod running deviation is ≤1mm, achieving misalignment correction coverage under all working conditions; subsequently, through positioning structure reinforcement, parameter solidification, and file establishment, gap deviation and component status can be dynamically tracked, and timely fine-tuning and maintenance can be carried out to avoid the recurrence of misalignment problems and ensure the long-term stability of the correction effect.

[0017] 5. The roller conveyor deviation correction and positioning process reduces production losses and overall costs: This process completely solves the core problems of the first section of the roller conveyor and deviation of the entire section, significantly reducing equipment downtime and the labor intensity of personnel handling faults; at the same time, it reduces additional wear on components caused by deviation, reduces equipment maintenance frequency and spare parts consumption costs, significantly improves the operational stability and rolling production continuity of the air-cooled roller conveyor of the rolling mill, and achieves quality improvement and efficiency enhancement. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] This solution provides a technical approach, specifically a roller conveyor deviation correction and positioning process, including the following steps: S1. Reference calibration and full data acquisition: First, the roller conveyor area is shut down and safely isolated. Iron oxide scale and debris are cleaned from the roller conveyor surface and around the bearing housing to ensure that the calibration operation is uninterrupted. Using the center line of the roller conveyor as a reference, a global reference coordinate system is established using a laser rangefinder to mark the theoretical axis position of each roller and the standard alignment line of the side wall plate. Collect key operational data: Detect the thermal deformation parameters of the rollers under high-temperature conditions of 750-1050℃, controlling radial thermal expansion within 5-8mm and axial thermal elongation within 28-35mm; measure the actual displacement of each bearing housing and record the left and right offset values ​​(usually 3-5mm) in the non-positioning state; use a gap gauge to check the actual gap between the sidewall plate and the rollers point by point, marking gap deviations (greater than 6mm) and skew positions; simultaneously record the tension fluctuation value of the roller conveyor chain and the rotational resistance torque of the bearings to provide data support for subsequent calibration; S2 bearing housing combination positioning and correction: To address the issue of roller axis misalignment caused by the lack of positioning in the bearing housing, a combined positioning correction method is implemented: a 3-6mm thick high-strength positioning steel plate is installed between adjacent bearing housings. The two sides of the positioning steel plate are precision ground to ensure that the flatness error is controlled within 0.02mm, thus ensuring a tight fit with the end face of the bearing housing. The dual positioning process of "positioning pins + welding fixation" is adopted: First, the positioning steel plate and the bearing housing are precisely aligned by 2-4 sets of positioning pins to ensure that the coaxiality deviation of the bearing housing along the reference axis is ≤0.5mm; then, the positioning steel plate and the bearing housing base are intermittently welded and fixed, with a weld height of 6-8mm. After welding, the weld slag is removed and the surface is ground flat to avoid protrusions affecting the operation of the bearing housing. After calibration, the bearing seat displacement is checked again to ensure that the left and right displacement is ≤1.5mm in the cold state and the maximum displacement does not exceed 2mm in the hot state, so as to achieve precise positioning of the roller axis. S3 side wall panel precise alignment and gap adjustment: Remove the original fixing structure of the side wall panels, and use the standard alignment line of the side wall panels in the reference coordinate system as a reference to adjust the verticality and parallelism of the side wall panels with a laser collimator. The verticality deviation is controlled within 0.3mm / m, and the parallelism deviation between the two side wall panels and the center line of the roller conveyor is ≤0.5mm. For areas prone to deviation in the first section, the side wall panels are simultaneously shifted inward by 45-65mm to reduce the effective conveying width of the first section of the roller conveyor and decrease the wire rod offset allowance. CNC cutting technology is used to trim the contact surface of the side wall panels to ensure a good fit with the rollers. The gap between the side wall panels and the rollers is adjusted by an adjustable set screw mechanism to uniformly control the gap of the entire roller conveyor to 3-5mm, with the gap deviation of the first section ≤0.3mm and the gap deviation of non-first sections ≤0.5mm. After adjustment, use high-strength bolts to fix the side wall plate to the newly added adjustable support. The installation point of the support extends 10-15mm above the roller surface to leave room for subsequent fine-tuning. S4 drivetrain synchronization calibration optimization: Synchronization correction of the roller conveyor system: disassemble the original transmission chain and replace it with a large-pitch chain suitable for high-speed and heavy-load conditions, ensuring that the meshing clearance between the chain and the sprocket is controlled within 0.2-0.5mm; adjust the installation position of each sprocket, and use a dial indicator to check that the end face runout of the sprocket is ≤0.3mm, ensuring that the transmission phase of all sprockets is synchronized; Replace the passive side bearing of the roller conveyor with a high-temperature resistant and high-load bearing. During installation, control the axial clearance of the bearing to be 0.15-0.25mm and lubricate it with high-temperature grease. Use a torque wrench to check the rotational resistance torque of each roller to ensure that the difference is ≤5N・m, so as to achieve the synchronization and smoothness of the roller rotation and avoid roller conveyor sway caused by asynchronous transmission. S5 Hot Condition Verification and Precise Fine-Tuning: Start the roller conveyor and run it under cold, no-load conditions for 30-60 minutes to check the stability of the bearing housing positioning, the absence of interference in the side wall plates, and the absence of abnormal vibration in the transmission system. Record the axial running trajectory of each roller. Hot-state verification was conducted under simulated high-temperature rolling conditions: The rollers were preheated to 750-850℃ using an electric heating device. The roller conveyor was started and a simulated wire rod (with the same effective weight as the actual wire rod) was used for conveying tests. The test was conducted continuously for 2-3 hours. The running trajectory of the simulated wire rod was recorded using a high-speed camera. If slight deviation occurred, the gap of the top screw could be adjusted by using the side wall plate, or a small correction could be made to the positioning steel plate of the bearing seat until the deviation between the running trajectory of the wire rod and the reference center line under hot conditions was ≤1mm. S6 Positioning Structure Reinforcement and Parameter Fixation: After passing the hot-state verification, all positioning structures are reinforced: anti-loosening ribs are added to both sides of the bearing housing positioning steel plate, and the ribs are welded to the positioning steel plate and bearing housing with fillet welds to enhance the impact resistance and stability of the positioning structure; the side wall plate fixing bolts are tightened a second time, using anti-loosening washers + spot welding anti-loosening double protection to prevent the bolts from loosening under high-temperature conditions; Clean the roller conveyor calibration area and recheck the key parameters: bearing housing coaxiality, side wall plate clearance, and transmission system synchronization. After all these parameters meet the requirements, mark the baseline and calibration date on the bearing housing and side wall plate, establish a calibration file, and record various calibration parameters, hot verification data, and positioning structure dimensions to provide a basis for subsequent maintenance. Furthermore, this process precisely solves the problem of axial misalignment caused by bearing seat displacement: it adopts a combined positioning process of "positioning steel plate + positioning pin + welding fixation", and adds a 3-6mm thick high-precision positioning steel plate between adjacent bearing seats. Through double positioning, it ensures that the left and right displacement of the bearing seat is ≤1.5mm in the cold state and the maximum displacement does not exceed 2mm in the hot state. This effectively limits the axial misalignment of the roller and eliminates the hidden danger of deviation caused by the lack of positioning of the bearing seat and displacement caused by thermal deformation from the root, thus ensuring the coaxiality accuracy of the roller operation. Furthermore, this process achieves dynamic adaptation and precise control of the side wall panel gap: by optimizing the side wall panel installation foundation, extending the support point 10-15mm above the roller surface and adopting an adjustable structure, combined with the 45-65mm inward translation design of the first section of the side wall panel, the gap of the entire roller conveyor is uniformly controlled at 3-5mm, and the gap deviation of the first section is ≤0.3mm. This not only adapts to the 5-8mm radial thermal expansion of the roller, but also solves the drawback of the original fixed and unadjustable gap. It can be finely adjusted daily through the adjustable set screw, completely eliminating the phenomenon of wire rod and side wall panel getting stuck, and especially improving the problem of high incidence of deviation in the first section. Furthermore, this process improves the synchronization and operational stability of the transmission system: by replacing the large-pitch heavy-duty chain with a high-temperature resistant and high-load-bearing passive side bearing, the chain meshing clearance is precisely controlled at 0.2-0.5mm and the bearing axial clearance at 0.15-0.25mm, ensuring that the difference in rotational resistance torque between each roller is ≤5N・m. This effectively solves the problem of transmission asynchrony caused by easy breakage of the original transmission chain and bearing jamming and wear, ensuring the smoothness of roller rotation and further avoiding roller deflection and misalignment caused by transmission imbalance. Furthermore, this process ensures the adaptability and long-term effectiveness of the calibration effect under all working conditions: a dual verification process of "cold no-load + hot load" is designed. The hot verification simulates a high-temperature working condition of 750-850℃, runs continuously for 2-3 hours, and monitors the trajectory with a high-speed camera to ensure that the wire rod running deviation is ≤1mm, achieving full coverage of deviation correction under all working conditions; subsequently, through positioning structure reinforcement, parameter solidification, and file establishment, gap deviation and component status can be dynamically tracked, and fine-tuning and maintenance can be performed in a timely manner to avoid the recurrence of deviation problems and ensure the long-term stability of the calibration effect; Furthermore, this process reduces production losses and overall costs: This process completely solves the core problems of the first section of the roller conveyor being misaligned and the entire section being off-center, significantly reducing equipment downtime and the labor intensity of personnel handling malfunctions; at the same time, it reduces additional wear on components caused by misalignment, reduces the frequency of equipment maintenance and spare parts consumption costs, significantly improves the operational stability of the rolling mill's air-cooled roller conveyor and the continuity of rolling production, and achieves quality improvement and efficiency enhancement.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller conveyor misalignment correction and positioning process, comprising S1 benchmark calibration and full data acquisition, S2 bearing housing combination positioning correction, S3 precise alignment and gap control of side wall panels, S4 synchronization calibration and optimization of transmission system, S5 hot working condition verification and precise fine-tuning, and S6 positioning structure reinforcement and parameter solidification, characterized in that: The S1 benchmark calibration and full data acquisition: First, the roller conveyor area is shut down for safety isolation. Iron oxide scale and debris are cleaned from the roller conveyor surface and around the bearing housing to ensure that the calibration operation is uninterrupted. Using the center line of the roller conveyor as a reference, a global reference coordinate system is established using a laser rangefinder to mark the theoretical axis position of each roller and the standard alignment line of the side wall plate.

2. The roller conveyor deviation correction and positioning process according to claim 1, characterized in that: The S1 benchmark calibration and full data acquisition also includes collecting key operating data: detecting the thermal deformation parameters of the rollers under high temperature conditions of 750-1050℃, controlling the radial thermal expansion to 5-8mm and the axial thermal elongation to 28-35mm; measuring the actual displacement of each bearing seat and recording the left and right offset values ​​(usually 3-5mm) in the non-positioning state; using a gap gauge to detect the actual gap between the side wall plate and the rollers point by point, marking the gap deviation (greater than 6mm) and the skew position; and simultaneously recording the tension fluctuation value of the roller conveyor chain and the rotational resistance torque of the bearings to provide data support for subsequent calibration.

3. The roller conveyor deviation correction and positioning process according to claim 1, characterized in that: The S2 bearing housing assembly positioning and correction: To address the issue of roller axis misalignment caused by the lack of positioning in the bearing housing, a combined positioning correction method is implemented: a 3-6mm thick high-strength positioning steel plate is installed between adjacent bearing housings. The two sides of the positioning steel plate are precision ground to ensure that the flatness error is controlled within 0.02mm, thus ensuring a tight fit with the end face of the bearing housing. The dual positioning process of "positioning pins + welding fixation" is adopted: First, the positioning steel plate and the bearing housing are precisely aligned by 2-4 sets of positioning pins to ensure that the coaxiality deviation of the bearing housing along the reference axis is ≤0.5mm; then, the positioning steel plate and the bearing housing base are intermittently welded and fixed, with a weld height of 6-8mm. After welding, the weld slag is removed and the surface is ground flat to avoid protrusions affecting the operation of the bearing housing. After calibration, the bearing seat displacement is checked again to ensure that the left and right displacement is ≤1.5mm in the cold state and the maximum displacement does not exceed 2mm in the hot state, so as to achieve precise positioning of the roller axis.

4. The roller conveyor deviation correction and positioning process according to claim 1, characterized in that: The S3 side wall panel features precise alignment and gap adjustment: Remove the original fixing structure of the side wall panels, and use the standard alignment line of the side wall panels in the reference coordinate system as a reference to adjust the verticality and parallelism of the side wall panels with a laser collimator. The verticality deviation is controlled within 0.3mm / m, and the parallelism deviation between the two side wall panels and the center line of the roller conveyor is ≤0.5mm. For areas prone to deviation in the first section, the side wall panels are simultaneously shifted inward by 45-65mm to reduce the effective conveying width of the first section of the roller conveyor and decrease the wire rod offset allowance. CNC cutting technology is used to trim the contact surface of the side wall panels to ensure a good fit with the rollers. The gap between the side wall panels and the rollers is adjusted by an adjustable set screw mechanism to uniformly control the gap of the entire roller conveyor to 3-5mm, with the gap deviation of the first section ≤0.3mm and the gap deviation of non-first sections ≤0.5mm. After adjustment, use high-strength bolts to fix the side wall plate to the newly added adjustable support. The installation point of the support extends 10-15mm above the roller surface to reserve space for subsequent fine-tuning.

5. The roller conveyor deviation correction and positioning process according to claim 1, characterized in that: Synchronization calibration and optimization of the S4 drive system: Synchronization correction of the roller conveyor system: disassemble the original transmission chain and replace it with a large-pitch chain suitable for high-speed and heavy-load conditions, ensuring that the meshing clearance between the chain and the sprocket is controlled within 0.2-0.5mm; adjust the installation position of each sprocket, and use a dial indicator to check that the end face runout of the sprocket is ≤0.3mm, ensuring that the transmission phase of all sprockets is synchronized; Replace the passive side bearing of the roller conveyor with a high-temperature resistant, high-load bearing. During installation, control the axial clearance of the bearing to be 0.15-0.25mm and lubricate it fully with high-temperature grease. Use a torque wrench to check the rotational resistance torque of each roller and ensure that the difference is ≤5N・m to achieve the synchronization and smoothness of the roller rotation and avoid roller conveyor sway caused by asynchronous transmission.

6. The roller conveyor deviation correction and positioning process according to claim 1, characterized in that: The S5 hot-condition verification and precise fine-tuning: Start the roller conveyor and run it under cold, no-load conditions for 30-60 minutes to check the stability of the bearing housing positioning, the absence of interference in the side wall plates, and the absence of abnormal vibration in the transmission system. Record the axial running trajectory of each roller. Hot-state verification was conducted under simulated high-temperature rolling conditions: The rollers were preheated to 750-850℃ using an electric heating device. The roller conveyor was started and a simulated wire rod (with the same effective weight as the actual wire rod) was used for conveying tests. The test was conducted continuously for 2-3 hours. The running trajectory of the simulated wire rod was recorded using a high-speed camera. If slight deviation occurred, the gap of the top screw could be adjusted by using the side wall plate, or a small correction could be made to the positioning steel plate of the bearing seat until the deviation between the running trajectory of the wire rod and the reference center line under hot conditions was ≤1mm.

7. The roller conveyor deviation correction and positioning process according to claim 1, characterized in that: The S6 positioning structure is reinforced and its parameters are fixed: After passing the hot-state verification, all positioning structures are reinforced: anti-loosening ribs are added to both sides of the bearing housing positioning steel plate, and the ribs are welded to the positioning steel plate and bearing housing with fillet welds to enhance the impact resistance and stability of the positioning structure; the side wall plate fixing bolts are tightened a second time, using anti-loosening washers + spot welding anti-loosening double protection to prevent the bolts from loosening under high-temperature conditions; After cleaning the roller conveyor calibration area, the key parameters are checked again: bearing housing coaxiality, side wall plate clearance, and transmission system synchronization all meet the requirements. Then, the baseline and calibration date are marked on the bearing housing and side wall plate, and a calibration file is established to record various calibration parameters, hot verification data, and positioning structure dimensions to provide a basis for subsequent maintenance.