Rapid maintenance device and method suitable for sectional type strip shape roller

Abstract

The invention provides a rapid maintenance device and method suitable for a sectional type strip-shaped roller, the device comprises a supporting flat plate, support stand columns are arranged below the supporting flat plate, the support stand columns are connected with the upper end of the supporting flat plate through locking nuts, a strip-shaped roller mandrel is arranged between the support stand columns, and the strip-shaped roller mandrel is connected with the supporting flat plate through locking nuts. The upper end of the plate-shaped roller core shaft penetrates through the center of the supporting flat plate and protrudes out of the upper surface of the supporting flat plate, the periphery of the part, protruding out of the upper surface of the supporting flat plate, of the plate-shaped roller core shaft is connected with a positioning plate, the top of the plate-shaped roller core shaft is connected with a hoisting magnet, and a sensor is arranged on the outer side of the plate-shaped roller core shaft; a plurality of roll rings are arranged on the outer side of the sensor from top to bottom; and except for the lowermost roller ring, the outer sides of the other roller rings are wrapped with a heat insulation material. The invention aims at providing the rapid maintenance method suitable for the sectional type strip shape roller, the rapid maintenance requirement of an old strip shape roller of a cold rolling strip production line is met, or a set of rapid maintenance equipment and technology is provided for a manufacturer, and stable production is guaranteed.

Description

Technical Field

[0001] The 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 the plate shape signal are extremely critical to the accuracy of plate shape measurement and control. However, during the use of the plate shape meter, signal deviation or distortion often occurs, which seriously affects the production efficiency and control effect of the cold rolling production line. For cold-rolled strip, the contact plate shape meter has high detection accuracy, but different structures will cause different problems. Once the signal of a channel of the plate shape roller is abnormal, the plate shape closed-loop control cannot be used normally, and the online detection plate shape curve does not match the actual plate shape state. Especially for the plate shape roller with segmented or sliced ​​structure, since its surface is a non-whole roller structure, the roller rings are sequentially mounted on the mandrel, and in order to ensure that the adjacent channel signals do not interfere, a certain gap is usually left. However, in the actual production process, the oil, water vapor, and dust on site will inevitably penetrate into the gap between the roller rings, which may cause line corrosion or wear over time, leading to line failure. For high-precision plate shape rollers, such problems affect the normal detection of plate shape signals on the one hand, and the maintenance cost is extremely expensive on the other hand, and the maintenance cycle is long, which affects the normal production of the production line to varying degrees. Summary of the invention

[0003] According to the above technical problem of high maintenance cost of existing segmented plate-shaped rollers, a device and method for rapid maintenance of segmented plate-shaped rollers are provided. The present invention designs a rapid maintenance method for segmented plate-shaped rollers to meet the rapid maintenance needs of old plate-shaped 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 by the present invention are as follows:

[0005] A segmented plate-shaped roller quick maintenance device comprises a supporting plate, a support column is arranged below the supporting plate, the support column is connected to the upper end of the supporting plate by a locking nut, a plate-shaped roller core shaft is arranged between the support columns, the upper end of the plate-shaped 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-shaped roller core shaft protruding from the upper surface of the supporting plate, the top of the plate-shaped roller core shaft is connected to a lifting magnet, a sensor is arranged on the outer side of the plate-shaped roller core shaft, and a plurality of roller rings are arranged on the outer side of the sensor from top to bottom; except for the lowest roller ring, the outer sides of the remaining roller rings are wrapped with insulating materials.

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

[0007] The present invention also provides a method for quickly repairing a segmented plate-shaped roller, which is implemented by the above-mentioned segmented plate-shaped roller quick repair device, and includes a disassembly method and an assembly method. The disassembly method includes the following steps:

[0008] The plate-shaped roller to be repaired is fixed vertically below the supporting plate, wherein the plate-shaped roller comprises a plate-shaped roller sensor, a roller ring and a plate-shaped roller core shaft;

[0009] Use the positioning plate and the lifting magnet to adjust the verticality of the plate-shaped roller to make it absolutely vertical;

[0010] Except for the lowest roller ring, wrap the remaining roller rings of the plate-shaped roller with insulation material, and place a nylon pad just below the plate-shaped roller;

[0011] Thermal disassembly: Use a flame spray gun to heat the bottom roller ring to the set temperature, so that the bottom roller ring expands and then falls off by its own weight;

[0012] Repeat the thermal disassembly steps from bottom to top to remove all roller rings in sequence;

[0013] Clean all roller rings and plate-shaped roller mandrels to make their surfaces smooth;

[0014] Check whether all sensors and connected cables are normal, whether the edge and surface of the roller ring are normal, and clean up foreign objects. If abnormal, replace them;

[0015] Clean the roller rings again, heat them quickly, and install them onto the plate-shaped roller core shaft from top to bottom in sequence, and make sure that the gaps between the roller rings meet the technical requirement of non-interference.

[0016] Recalibrate all detection channels, observe whether the abnormal detection channels return to normal, and check whether there is interference between adjacent channels;

[0017] 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.

[0018] Furthermore, when the hot disassembly and assembly step becomes stuck, a copper hammer is used to knock around the roller ring to make it fall off naturally. If it cannot fall off within the specified time, the roller ring is cooled down and then the hot disassembly and assembly step is performed and the set temperature is increased.

[0019] Furthermore, the set temperature is 150°C.

[0020] Furthermore, when a roller ring is removed by heat, only the current roller ring is heated quickly, and the other roller rings are wrapped with thermal insulation 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 falls off, the other roller rings and the inside of the plate-shaped roller are cooled faster to perform 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 plate-shaped roller mandrel;

[0024] The horizontality of the supporting plate is adjusted using a pad, and the verticality is adjusted and accurately positioned using a positioning pad, wherein the positioning pad is arranged on the supporting plate, and a plate-shaped roller core shaft is arranged inside the positioning pad;

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

[0026] During the hot-loading process, the installed roller rings and plate-shaped roller mandrels are cooled down; 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 a plate-shaped roller with abnormal signals, utilize a hot-mounted bracket to ensure rapid disassembly and assembly efficiency, and provide an effective maintenance method for quickly maintaining problematic segmented plate-shaped rollers, so that the repair work of the plate-shaped roller can 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0030] Figure 1 It 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 The figure is a 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 of the present invention and the features in the embodiments 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 by no means 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 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 exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates 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 described in these embodiments, the numerical expressions and numerical values ​​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 technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are 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. If not 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-shaped roller quick maintenance device, comprising a support plate 1, a support column 5 is arranged 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 arranged between the support column 5 and other support columns 5, and a nylon pad 11 is arranged directly below the plate-shaped roller core shaft 10. 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, and the plate-shaped roller core shaft 10 is connected with a positioning plate 4 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, and a sensor 6 is arranged on the outer side of the plate-shaped roller core shaft 10, and a plurality of roller rings 7 are arranged on the outer side of the sensor 6 from top to bottom; except for the bottommost roller ring 7, the outer sides 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 vertically 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;

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

[0047] Except for the lowest roller ring 7, the remaining roller rings 7 of the plate-shaped roller are wrapped with insulating materials 8 (such as asbestos), and a nylon pad 11 or other non-metallic soft materials that can buffer are placed directly under the plate-shaped roller to protect the fallen roller rings from any bump damage;

[0048] 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 expands thermally and then falls off by 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 thermal 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 the surfaces of all roller rings 7 and plate-shaped roller core shafts 10 smooth;

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

[0053] The roller rings 7 are cleaned again, and are quickly heated, and are hot-mounted onto the plate-shaped roller core shaft 10 from top to bottom, and 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 plate-shaped roller core shaft 10;

[0058] The pad 13 is used to adjust the horizontality of the supporting plate 1, and then the positioning pad 12 is used to adjust the verticality and accurately position the supporting plate 1. The positioning pad 12 is arranged on the supporting plate 1, and a plate-shaped roller core shaft 10 is arranged inside 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 mounted on the plate-shaped roller core shaft 10 from top to bottom, and is accurately positioned using a positioning pad 12;

[0060] During the hot installation process, pay attention to timely cooling down the installed roller ring and plate-shaped roller core shaft 10 to avoid failure in hot installation 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 channel, and summarize the cause of the fault; 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 the cleanliness of the roller ring and the core shaft of the plate roller, and ensure that the plate roller is absolutely vertical, so that the roller ring with rapid thermal expansion can fall off quickly by relying on its own weight. If it is stuck, quickly use a copper hammer to evenly knock around it 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 in a short time, quickly cool it down and re-hot disassembly or hot installation; after the assembly is completed, cool down in time, clean the surface again, calibrate the plate roller, and observe whether the signals of each channel are normal and no interference occurs; 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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 supporting plate (1), wherein a support column (5) is arranged below the edge of the supporting plate (1), the support column (5) is connected to the upper end of the supporting plate (1) through a locking nut (2), a plate-shaped roller core shaft (10) is arranged 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 supporting plate (1) and protrudes from the upper surface of the supporting 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 supporting plate (1), the top of the plate-shaped roller core shaft (10) is connected to a hanging magnet (3), a sensor (6) is arranged on the outer side of the plate-shaped roller core shaft (10), and a plurality of roller rings (7) are arranged on the outer side of the sensor (6) from top to bottom; except for the lowest roller ring (7), the outer sides of the remaining roller rings (7) are wrapped with insulation material (8).

2. The segmented plate-shaped roller quick maintenance device according to claim 1 is characterized in that: A nylon pad (11) is arranged 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 invention comprises a disassembly method and an assembly method, wherein the disassembly method comprises the following steps: The plate-shaped roller to be repaired is fixed upright below a 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); The verticality of the plate-shaped roller is adjusted by using a positioning plate (4) and a hanging magnet (3) so that the plate-shaped roller is absolutely vertical; Except for the lowest roller ring (7), the remaining roller rings (7) of the plate-shaped roller are wrapped with insulation material (8), and a nylon pad (11) is placed 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) expands and falls off by its own weight; Repeat the thermal disassembly 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 and clean; Check whether all sensors (6) and connected cables are normal, whether the edge and surface of the roller ring (7) are normal, and remove foreign objects. If abnormal, replace them; The roller rings (7) are cleaned again, the roller rings (7) are quickly heated, and the roller rings (7) are hot-mounted onto the plate-shaped roller core shaft (10) from top to bottom, and 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 is characterized in that: When the hot disassembly and assembly step is stuck, a copper hammer is used to knock the roller ring (7) around so that the roller ring (7) falls off naturally. If it cannot fall off within a specified time, the roller ring (7) is cooled and then the hot disassembly and assembly step is performed and the set temperature is increased.

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

6. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3 is 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 temperature reduction process.

7. The method for rapid maintenance of segmented plate-shaped rollers according to claim 3 is 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 is characterized in that: The assembly method comprises the following steps: The supporting plate (1) is turned upside down, and the plate-shaped roller core shaft (10) is placed upright on the plate-shaped roller core shaft (10); 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). The positioning pad (12) is arranged on the supporting plate (1), and a plate-shaped roller core shaft (10) is arranged inside the positioning pad (12); After the roller ring (7) to be installed is heated to 150° C. using a flame torch, the roller ring (7) to be installed is quickly mounted on the plate-shaped roller core shaft (10) from top to bottom, and is 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).

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