A quick maintenance device and method for segmented plate-shaped roller

Abstract

The application provides a kind of suitable segmented plate-shaped roller quick maintenance device and method, device includes support flat plate, the lower portion of support flat plate is provided with support column, the upper end of support flat plate is connected with support column by locking nut, plate-shaped roller arbor is arranged between support column, the upper end of plate-shaped roller arbor is penetrated the center of support flat plate and protrudes the upper surface of support flat plate, the periphery of the portion of plate-shaped roller arbor protruding the upper surface of support flat plate is connected with positioning plate, the top of plate-shaped roller arbor is connected with hoisting magnet, the outside of plate-shaped roller arbor is provided with sensor, the outside of sensor is provided with a plurality of roll rings from top to bottom;Except the lowermost roll ring, the outside of remaining roll ring is wrapped with heat insulation material.The purpose of the application is to provide a kind of suitable segmented plate-shaped roller quick maintenance method, meet the quick maintenance demand of old plate-shaped roller of cold-rolled strip production line, or provide a set of quick maintenance equipment and process for manufacturer, ensure stable production.

Description

Technical Field

[0001] The present invention relates to the technical field of cold-rolled strip shape measurement and control, and in particular to a device and method for quickly repairing a segmented shape roller. Background Art

[0002] The stability and accuracy of flatness signals are crucial for precise flatness measurement and control. However, flatness meters often experience signal deviation or distortion during use, severely impacting the efficiency and control effectiveness of cold rolling lines. Contact-type flatness meters offer high accuracy for cold-rolled strip, but different configurations present different challenges. A signal anomaly in a channel of the flatness roller can disrupt closed-loop flatness control, leading to discrepancies between the online flatness curve and the actual flatness state. This is especially true for segmented or segmented flatness rollers, which, due to their non-integrated surface, require roller rings to be sequentially mounted on the mandrel. To prevent interference between adjacent channel signals, a certain gap is typically maintained. However, in actual production, oil, moisture, and dust from the field inevitably seep into the gap between the roller rings. Over time, this can cause corrosion or wear on the circuitry, leading to circuit failure. For high-precision flatness rollers, these issues not only affect the proper detection of flatness signals but also lead to extremely high maintenance costs and long repair cycles, significantly impacting production line performance. Summary of the Invention

[0003] In response to the aforementioned technical problem of high maintenance costs for existing segmented flat rollers, a device and method for rapid maintenance of segmented flat rollers are provided. This invention designs a rapid maintenance method for segmented flat rollers to meet the needs of rapid maintenance of worn flat rollers in cold-rolled strip production lines, or to provide manufacturers with a set of rapid maintenance equipment and processes to ensure stable production.

[0004] The technical means adopted in the present invention are as follows:

[0005] A segmented plate roller quick maintenance device comprises a supporting plate, a support column is provided below the supporting plate, the support column is connected to the upper end of the supporting plate by a locking nut, a plate roller core shaft is provided between the support columns, the upper end of the plate roller core shaft passes through the center of the supporting plate and protrudes from the upper surface of the supporting plate, positioning plates are connected around the portion of the plate roller core shaft protruding from the upper surface of the supporting plate, the top of the plate roller core shaft is connected to a lifting magnet, a sensor is provided on the outside of the plate roller core shaft, and a plurality of roller rings are provided on the outside of the sensor from top to bottom; except for the bottommost roller ring, the outsides of the other roller rings are wrapped with insulating material.

[0006] Furthermore, a nylon pad is provided directly below the plate-shaped roller core shaft.

[0007] The application further provides a segmented plate-shaped roller quick maintenance method, which is realized by the segmented plate-shaped roller quick maintenance device and comprises a dismounting method and an assembling method.

[0008] The plate-shaped roller to be maintained is fixed vertically below the support plate, and the plate-shaped roller comprises a plate-shaped roller sensor, a roller ring and a plate-shaped roller shaft;

[0009] The verticality of the plate-shaped roller is adjusted by using the positioning plate and the lifting magnet, so that the plate-shaped roller is absolutely vertical;

[0010] Except for the lowermost roller ring, the remaining roller rings of the plate-shaped roller are wrapped with heat insulation materials, and a nylon pad is placed right below the plate-shaped roller;

[0011] Hot dismounting: the lowermost roller ring is heated to a set temperature by using a flame spray gun, and the lowermost roller ring is expanded by heat and then falls off by gravity;

[0012] The hot dismounting step is repeated from bottom to top, and all the roller rings are sequentially removed;

[0013] All the roller rings and the plate-shaped roller shaft are cleaned, so that the surfaces of all the roller rings and the plate-shaped roller shaft are smooth;

[0014] It is checked whether all the sensors and the connected cables are normal, whether the edges and surfaces of the roller rings are normal, and whether foreign matters are cleaned, and if not, the roller rings need to be replaced;

[0015] The roller rings are cleaned again, the roller rings are quickly heated, and the roller rings are sequentially and hotly mounted on the plate-shaped roller shaft from top to bottom, and the gaps between the roller rings meet the technical requirements that the roller rings do not interfere with each other;

[0016] All the detection channels are recalibrated, it is observed whether the abnormal detection channels are restored to normal, and it is checked whether the adjacent channels have interference behaviors;

[0017] The plate-shaped roller is finely ground before being mounted on a machine, so that the roughness requirement of the plate-shaped detection roller is met, and the segmented plate-shaped roller is repaired.

[0018] Further, when the hot dismounting step is stuck, the roller ring is naturally removed by hitting the periphery of the roller ring with a copper hammer, and if the roller ring cannot be removed within a specified time, the roller ring is cooled and then the hot dismounting step is performed again and the set temperature is increased.

[0019] Further, the set temperature is 150 DEG C.

[0020] Further, when a certain roller ring is hotly dismounted, only the current roller ring is quickly heated, the other roller rings are wrapped with heat insulation cotton, and the inside of the plate-shaped roller is in a low-temperature state by using a cooling device; after the current roller ring is removed, the other roller rings and the inside of the plate-shaped roller are quickly cooled for rapid cooling treatment.

[0021] Furthermore, the sensor is connected to a signal processor and a maintenance system, and the signal processor and the maintenance system perform signal detection and calibration on the sensor.

[0022] Furthermore, the assembly method comprises the following steps:

[0023] Turn the supporting plate upside down and place the plate-shaped roller mandrel upright on the supporting plate;

[0024] Use the pad to adjust the horizontality of the supporting plate, and then use the positioning pad to adjust the verticality and accurately position it. The positioning pad is set on the supporting plate and a plate-shaped roller core shaft is set in the positioning pad;

[0025] After heating the roller ring to be installed to 150℃ with a flame torch, quickly put the roller ring to be installed onto the plate-shaped roller core shaft from top to bottom and use positioning pads for precise positioning;

[0026] During the hot-loading process, the installed roller rings and plate-shaped roller core shafts are cooled; when installing each roller ring, there is a gap between the adjacent roller rings.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] The present invention can quickly repair plate-shaped rollers with abnormal signals, utilizes hot-mounted brackets to ensure rapid assembly and disassembly efficiency, and provides an effective maintenance method for quickly maintaining problematic segmented plate-shaped rollers, enabling the repair of the plate-shaped rollers to be completed in a short time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is a sectional view of the disassembly process of the present invention.

[0031] Figure 2 It is a top view of the disassembly process of the present invention.

[0032] Figure 3 It is a cross-sectional view of the assembly process of the present invention.

[0033] Figure 4 It is a top view of the assembly process of the present invention.

[0034] Figure 5 Flow chart of the method of the present invention.

[0035] In the figure: 1. Support plate; 2. Locking nut; 3. Lifting magnet; 4. Positioning plate; 5. Support column; 6. Sensor; 7. Roller ring; 8. Insulation material; 9. Flame spray gun; 10. Plate roller core shaft; 11. Nylon pad; 12. Positioning pad; 13. Pad. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0040] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0041] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "above" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] like Figure 1-4 As shown, the present invention provides a segmented plate roller quick maintenance device, comprising a support plate 1, a support column 5 is provided below the edge of the support plate 1, the support column 5 is connected to the upper end of the support plate 1 by a locking nut 2, a plate roller core shaft 10 is provided between the support column 5 and other support columns 5, and a nylon pad 11 is provided directly below the plate roller core shaft 10. The upper end of the plate roller core shaft 10 passes through the center of the support plate 1 and protrudes from the upper surface of the support plate 1. Positioning plates 4 are connected around the portion of the plate roller core shaft 10 protruding from the upper surface of the support plate 1. The top of the plate roller core shaft 10 is connected to a hanging magnet 3. A sensor 6 is provided on the outside of the plate roller core shaft 10. Several roller rings 7 are provided on the outside of the sensor 6 from top to bottom; except for the bottommost roller ring 7, the outsides of the remaining roller rings 7 are wrapped with insulation material 8.

[0044] The present invention also provides a method for quickly repairing a segmented plate-shaped roller, including a disassembly method and an assembly method. The disassembly method includes the following steps:

[0045] The plate-shaped roller to be repaired is fixed upright below the supporting plate 1, and the plate-shaped roller includes a plate-shaped roller sensor 6, a roller ring 7 and a plate-shaped roller core shaft 10;

[0046] Use the positioning plate 4 and the hanging magnet 3 to adjust the verticality of the plate roller so that the plate roller is absolutely vertical;

[0047] Except for the lowest roller ring 7, the remaining roller rings 7 of the plate roller are wrapped with insulation material 8 (such as asbestos), and a nylon pad 11 or other non-metallic soft material that can buffer is placed just below the plate roller to protect the detached roller ring from any bump damage;

[0048] Thermal disassembly: Use a flame spray gun 9 to heat the bottom roller ring 7 to the set temperature, so that the bottom roller ring 7 expands and then falls off under its own weight;

[0049] If it is stuck, use a copper hammer to knock around to make it fall off naturally. If it cannot fall off in a short time, repeat the above process after rapid cooling and appropriately increase the heating temperature (within 200℃); repeat the above process from bottom to top to fall off all the roller rings in turn.

[0050] Repeat the hot disassembly steps from bottom to top to remove all roller rings 7 in sequence;

[0051] Clean all roller rings 7 and plate-shaped roller core shafts 10 to make their surfaces smooth;

[0052] Check whether all sensors 6 and connected cables are normal, whether the edge and surface of roller ring 7 are normal, clean up foreign objects, and replace them if abnormal;

[0053] Clean the roller rings 7 again, heat them quickly, and install them onto the plate-shaped roller core shaft 10 in sequence from top to bottom, ensuring that the gaps between the roller rings 7 meet the technical requirement of non-interference.

[0054] Recalibrate all detection channels, observe whether the abnormal detection channels return to normal, and check whether there is interference between adjacent channels;

[0055] Before being put on the machine, the flatness roller is finely ground to meet the roughness requirements of the flatness detection roller and complete the repair of the segmented flatness roller.

[0056] The assembly method comprises the following steps:

[0057] Turn the supporting plate 1 upside down and place the plate-shaped roller core shaft 10 upright on the supporting plate 1;

[0058] Use the pad 13 to adjust the horizontality of the supporting plate 1, and then use the positioning pad 12 to adjust the verticality and accurately position it. The positioning pad 12 is set on the supporting plate 1, and the plate-shaped roller core shaft 10 is set in the positioning pad 12;

[0059] After heating the roller ring 7 to be installed to 150°C using a flame spray gun 9 (which can also be replaced by a heating coil or hot oil), the roller ring 7 to be installed is quickly fitted onto the plate-shaped roller core shaft 10 from top to bottom and accurately positioned using the positioning pad 12;

[0060] During the hot-loading process, pay attention to timely cooling of the installed roller ring and plate-shaped roller core shaft 10 to avoid failure in hot-loading and protect the sensor and the cables from damage. When installing each roller ring, pay attention to ensuring the gap between adjacent roller rings to avoid prestressed contact or tight fit.

[0061] like Figure 5 As shown in the figure, a detailed installation process is given. In order to better compare the repair process before and after the segmented plate roller, a detailed maintenance system needs to be formulated. First, record the online plate data, observe the abnormal channels, and summarize the causes of the faults. Then, clean the surface in time after removing the bearing seat from the machine to avoid abrasive wear during disassembly and assembly. During the hot disassembly and assembly process, it is necessary to ensure that the surface of the roller ring and the plate roller core shaft is clean, and the plate roller is absolutely vertical, so that the roller ring that rapidly expands can fall off quickly under its own weight. If it is stuck, quickly use a copper hammer to evenly knock it around to promote it to fall off or install it in place. During the knocking process, it is strictly forbidden to knock the edge of the roller ring or knock hard to leave marks. If it cannot fall off within a short time, quickly cool it down and re-do hot disassembly or hot assembly. After assembly, cool it down in time, clean the surface again, calibrate the plate roller, and observe whether the signals of each channel are normal and there is no interference. Finally, before officially going on the machine, the plate roller is finely ground to meet the requirements of the machine.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A segmented plate roller quick maintenance device, characterized in that: It comprises a support plate (1), a support column (5) is provided below the edge of the support plate (1), the support column (5) is connected to the upper end of the support plate (1) through a locking nut (2), a plate-shaped roller core shaft (10) is provided between the support column (5) and other support columns (5), the upper end of the plate-shaped roller core shaft (10) passes through the center of the support plate (1) and protrudes from the upper surface of the support plate (1), positioning plates (4) are connected around the portion of the plate-shaped roller core shaft (10) protruding from the upper surface of the support plate (1), the top of the plate-shaped roller core shaft (10) is connected to the hanging magnet (3), a sensor (6) is provided on the outer side of the plate-shaped roller core shaft (10), and a plurality of roller rings (7) are provided on the outer side of the sensor (6) from top to bottom; except for the bottommost roller ring (7), the outer sides of the other roller rings (7) are wrapped with insulation material (8); The bottom roller ring (7) is heated to a set temperature by a flame spray gun (9), so that the bottom roller ring (7) expands thermally and falls off by its own weight; Repeat the heat disassembly and assembly steps from bottom to top to remove all roller rings (7) in sequence; Cleaning all roller rings (7) and plate-shaped roller core shafts (10) to make the surfaces of all roller rings (7) and plate-shaped roller core shafts (10) smooth; Check whether all sensors (6) and connected cables are normal, whether the edge and surface of the roller ring (7) are normal, and clean foreign objects. If abnormal, replace them; Clean the roller ring (7) again, quickly heat the roller ring (7), and sequentially heat-install the roller rings (7) onto the plate-shaped roller core shaft (10) from top to bottom, and ensure that the gaps between the roller rings (7) meet the technical requirement of non-interference; Recalibrate all detection channels, observe whether the abnormal detection channels return to normal, and check whether there is interference between adjacent channels; Before being put on the machine, the flatness roller is finely ground to meet the roughness requirements of the flatness detection roller and complete the repair of the segmented flatness roller.

2. The segmented plate roller quick maintenance device according to claim 1 is characterized in that: A nylon pad (11) is provided directly below the plate-shaped roller core shaft (10).

3. A method for quickly repairing a segmented plate-shaped roller, which is implemented by the device for quickly repairing a segmented plate-shaped roller as claimed in claim 1 or 2, characterized in that: The method includes a disassembly method and an assembly method. The disassembly method includes the following steps: The plate-shaped roller to be repaired is fixed upright below the supporting plate (1), wherein the plate-shaped roller comprises a plate-shaped roller sensor (6), a roller ring (7) and a plate-shaped roller core shaft (10); Use the positioning plate (4) and the hanging magnet (3) to adjust the verticality of the plate roller so that the plate roller is absolutely vertical; Wrapping the remaining roller rings (7) of the plate-shaped roller with insulation material (8) except the lowest roller ring (7), and placing a nylon pad (11) directly below the plate-shaped roller; Thermal disassembly: Use a flame spray gun (9) to heat the bottom roller ring (7) to a set temperature, so that the bottom roller ring (7) will fall off by its own weight after thermal expansion; Repeat the heat disassembly and assembly steps from bottom to top to remove all roller rings (7) in sequence; Cleaning all roller rings (7) and plate-shaped roller core shafts (10) to make the surfaces of all roller rings (7) and plate-shaped roller core shafts (10) smooth; Check whether all sensors (6) and connected cables are normal, whether the edge and surface of the roller ring (7) are normal, and clean foreign objects. If abnormal, replace them; Clean the roller ring (7) again, quickly heat the roller ring (7), and sequentially heat-install the roller rings (7) onto the plate-shaped roller core shaft (10) from top to bottom, and ensure that the gaps between the roller rings (7) meet the technical requirement of non-interference; Recalibrate all detection channels, observe whether the abnormal detection channels return to normal, and check whether there is interference between adjacent channels; Before being put on the machine, the flatness roller is finely ground to meet the roughness requirements of the flatness detection roller and complete the repair of the segmented flatness roller.

4. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3, characterized in that: When the hot disassembly step is stuck, the roller ring (7) is struck with a copper hammer around the roller ring (7) to make the roller ring (7) fall off naturally. If it cannot fall off within the specified time, the roller ring (7) is cooled and then the hot disassembly step is performed and the set temperature is increased.

5. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3, characterized in that: The set temperature is 150°C.

6. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3, characterized in that: When a roller ring (7) is removed by heat, only the current roller ring (7) is heated quickly, and the other roller rings (7) are wrapped with heat-insulating cotton. At the same time, the cooling device is used to keep the inside of the plate-shaped roller in a low-temperature state. After the current roller ring (7) is removed, the other roller rings (7) and the inside of the plate-shaped roller are cooled faster to perform a rapid cooling process.

7. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3, characterized in that: The sensor (6) is connected to a signal processor and a maintenance system, and the signal processor and the maintenance system perform signal detection and calibration on the sensor (6).

8. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3, characterized in that: The assembly method comprises the following steps: Turn the supporting plate (1) upside down and place the plate-shaped roller core shaft (10) upright on the supporting plate (1); A pad (13) is used to adjust the horizontality of the supporting plate (1), and a positioning pad (12) is used to adjust the verticality and accurately position the supporting plate (1), wherein the positioning pad (12) is provided on the supporting plate (1), and a plate-shaped roller core shaft (10) is provided in the positioning pad (12); After heating the roller ring (7) to be installed to 150° C. using a flame roasting gun, the roller ring (7) to be installed is quickly fitted onto the plate-shaped roller core shaft (10) from top to bottom, and accurately positioned using a positioning pad (12); During the hot-installation process, the installed roller ring (7) and the plate-shaped roller core shaft (10) are cooled; when each roller ring (7) is installed, a gap is provided between adjacent roller rings (7).

Images