A quick replacement auxiliary device and replacement method for a hot rolling flatness instrument laser

Abstract

The present invention discloses a quick-change auxiliary device and method for a hot-rolling flatness meter laser. The quick-change auxiliary device comprises a housing, an adjustable reflector, and a light source. The housing has an opening on one side, and a front-end fixing knob and a rear-end fixing knob are provided on the front and rear sides of its bottom, respectively. The adjustable reflector is rotatably arranged at the lower end of the housing opening and fixed to the housing via the front-end fixing knob. The lower portion of the reflector is located at the housing opening and is transparent and movably provided with an opaque light source slit plate, which is provided with a plurality of light source slits. The light source is provided on the inner side of the housing, and its light is emitted in a direction toward the housing opening. The device of the present invention, when combined with the method, can achieve the purpose of quickly replacing and adjusting the position of the laser, while reducing the consumption of manpower and time, thereby improving work efficiency and enhancing the maintenance capability of on-site workers for the flatness equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of large-scale measuring instruments, and in particular relates to a laser quick-replacement auxiliary device and a replacement method for a hot rolling flatness instrument. Background Art

[0002] Currently, many steel companies' hot rolling lines (such as the 2250 and 1580 lines) are equipped with flatness meters (such as those from NDC, a global company) at the finishing mill exit. These meters measure the surface flatness of finished hot-rolled strip, playing a crucial role in the hot rolling process. These meters typically contain 27 lasers, organized into three modules, each housing nine lasers. This requires precise positioning of the lasers. However, over time, the lasers themselves consume energy. When their intensity degrades, they need to be replaced. After replacing a new laser, the position of the newly replaced laser on the module may need to be adjusted due to changes in laser position or module displacement during laser replacement. Currently, a common practice is to install a calibration frame and a calibration plate on the roller conveyor, positioned vertically below the flatness meter. The markings on the calibration plate serve as a reference for laser replacement or position adjustment. This makes the process of replacing and adjusting the position of a single laser cumbersome, time-consuming and labor-intensive, and can only be performed during maintenance or production stoppages. The roller needs to be stopped after cooling, and there can be no cross-operation in the surrounding area. At least two or more people are required to cooperate in adjusting the laser position. Even for skilled workers, it takes about four hours from preparation to completion, affecting the orderly progress of production.

[0003] With the rapid development and advancement of science and technology, steel rolling mills will eventually become intelligent, and equipment maintenance will need to meet the requirements of high speed and efficiency. Traditional maintenance methods or methods that consume a lot of manpower and material resources will gradually be eliminated. Therefore, in the case of a large number of emergency adjustments such as laser replacement due to wear and tear or laser position deviation caused by vibration in the hot rolling mill, operators need to be able to make the necessary adjustments in a short time, reducing the impact on normal production and achieving the purpose of rapid maintenance. Summary of the Invention

[0004] In response to the technical problems in the background technology that the laser replacement or position adjustment process in the flatness meter is cumbersome, time-consuming and labor-intensive, and can only be performed during maintenance or production stoppage, affecting normal production, the present invention provides a hot-rolling flatness meter laser quick replacement auxiliary device and replacement method, which can not only achieve the purpose of quickly replacing and adjusting the laser position, but also reduce the consumption of manpower and time, improve work efficiency, and enhance the on-site workers' maintenance capabilities of the flatness equipment.

[0005] The technical solution of the present invention to solve the technical problem is as follows:

[0006] On the one hand, the present invention provides a hot rolling flatness instrument laser quick replacement auxiliary device, which includes a box, an adjustable reflector and a light source; the box is open on one side, and a plurality of front-end fixing knobs and a rear-end fixing knob are respectively provided on the front and rear sides of its bottom; the adjustable reflector is rotatably set at the lower end of the box opening and is fixed to the box through the front-end fixing knob, and its lower part is located at the box opening and is transparent and movably provided with an opaque light source slit plate, and a plurality of light source slits are provided on the light source slit plate; the light source is set on the inside of the box, and the light emission direction thereof is toward the opening of the box.

[0007] Furthermore, the light source is provided with a power supply, which may be a rechargeable battery or a non-rechargeable battery.

[0008] Furthermore, the width of the light source gap is preferably 1 mm and the length is 20 mm.

[0009] Another aspect of the present invention provides a method for quickly replacing the laser of a hot rolling flatness instrument, wherein the flatness instrument includes a laser module and an instrument glass window arranged above and below, the laser module including a mounting bracket, a bracket rotation stepping motor arranged on the upper surface of the mounting bracket, and a plurality of lasers arranged on the lower surface of the mounting bracket, wherein the plurality of lasers are arranged in a plurality of rows, with at least three lasers in each row, and the method comprises the following steps:

[0010] S1. Install the hot rolling flatness meter laser quick-change auxiliary device described in the above technical solution on the instrument glass window at a position below the laser module and fix it to the instrument glass window via the rear-end fixing knob. Adjust the adjustable reflector so that it forms a predetermined angle with the instrument glass window and fix it via the front-end fixing knob.

[0011] S2. Determine the number and spacing of the light source slots on the light source slot plate according to the number and row spacing of the lasers on the laser module, ensuring that the spacing between adjacent light source slots is consistent with the spacing between two adjacent rows of lasers;

[0012] S3. Adjust the mounting bracket by rotating the stepper motor so that the laser beams emitted by at least three lasers in each row form a predetermined angle with the instrument glass window, and form a first laser spot, a second laser spot, and a third laser spot on the instrument glass window, respectively. Simultaneously, after being reflected by the instrument glass window, each laser beam forms a first reflection point, a second reflection point, and a third reflection point on the adjustable reflector, respectively, and mark each reflection point.

[0013] S4, disposing the light source slit plate at the lower portion of the adjustable reflector at the opening of the box body, and adjusting the position of the light source slit plate so that the slit light emitted by the light source from each light source slit coincides with the first laser spot, the second laser spot, and the third laser spot of each row;

[0014] S5. Take two of the at least three lasers in each row as a reference for replacing another laser. In the current state of the laser module, replace one of the lasers and roughly install and fix the new laser. Observe whether the reflection points formed on the adjustable reflector plate after the laser light emitted by the other two lasers is reflected by the instrument glass window and coincides with the positions of the reflection points corresponding to the original marks. If the positions coincide, it means that the state of the laser module has not changed and no adjustment is required. Just tighten the replaced laser. If there is a deviation in the position, it means that the state of the laser module has changed. By adjusting the laser module so that the reflection points formed on the adjustable reflector plate by the laser lights emitted by the other two lasers after being reflected by the instrument glass window coincide with the positions of the originally marked reflection points, then adjusting the newly replaced laser so that the laser point formed by the laser lights emitted by it on the instrument glass window coincides with the corresponding slit light, and then moving the laser point along the slit light. When the reflection point formed on the adjustable reflector plate by the laser lights emitted by the laser after being reflected by the instrument glass window coincides with the reflection point corresponding to the laser, it is indicated that this point position is the standard point position, and the replaced laser is tightened;

[0015] S6. Remove the hot rolling flatness meter laser quick replacement auxiliary device, adjust the laser module to restore it to its original working position, and complete the replacement of the laser.

[0016] Furthermore, each reflection point marked on the adjustable reflection plate is a circle with a diameter less than 2 mm.

[0017] Furthermore, the angle between the adjustable reflector and the instrument glass window is 45°, and the angle between the laser light emitted by the laser and the instrument glass window is 45°.

[0018] Compared with the prior art, the hot rolling flatness meter laser quick replacement auxiliary device and replacement method described in the present invention have the following beneficial effects:

[0019] (1) The replacement auxiliary device of the present invention has a simple, reasonable and practical structure, is easy to manufacture and use, and is very convenient to carry, install and disassemble.

[0020] (2) The replacement auxiliary device of the present invention, in conjunction with the corresponding replacement method, can quickly complete the replacement of the flatness instrument laser and / or the adjustment of the laser position without the need for cooperation of multiple people. A single person can complete the work in a short time, effectively saving manpower and material resources and improving the effect of reducing costs and increasing efficiency.

[0021] (3) The replacement auxiliary device of the present invention is combined with the corresponding replacement method, which changes the previous situation that laser replacement and / or laser position adjustment can only be performed during inspection or production stoppage. The relevant operations can be completed online, which is convenient and fast.

[0022] (4) The replacement auxiliary device of the present invention is combined with the corresponding replacement method, which changes the previous situation in which the laser cannot be replaced and / or the laser position is adjusted without cross-operation. Now the operation can be completed within the frame of the instrument itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the hot rolling flatness meter laser quick replacement auxiliary device of the present invention when in use;

[0024] In the figure: 1. Box; 2. Adjustable reflector; 3. Light source; 4. Power supply; 5. Rear fixing knob; 6. Front fixing knob; 7. Light source slit; 8. Slit light; 9. Light source light; 10. Instrument glass window; 11. Light source slit plate; 12. Laser light; 13. Laser reflected light; 14. Laser; 15. Mounting bracket; 16. Bracket rotation stepper motor; 17. Laser module; A. First laser point; B. Second laser point; C. Third laser point; A', first reflection point; B', second reflection point; C', third reflection point. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The terms "upper", "lower", "left", "right", "front", "back", etc. used in the patent application specification and claims of the present disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly; "connected" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Anything not described in detail in the present invention is a common knowledge to those skilled in the art. Example

[0027] like Figure 1 As shown, a quick-change auxiliary device for the laser of a hot-rolled flatness meter comprises a housing 1, an adjustable reflector 2, and a light source 3. The housing 1 serves as the carrier for the entire replacement auxiliary device. One side of the housing is open, and a plurality of front-end fixing knobs 6 and rear-end fixing knobs 5 are provided on the front and rear sides of the bottom, respectively. The adjustable reflector 2 is rotatably mounted at the lower end of the opening of the housing 1 and is fixed to the housing 1 via the front-end fixing knob 6. The lower portion of the reflector 2 is located at the opening of the housing 1 and is transparent and movable with an opaque light source slit plate 11. The light source slit plate 11 is provided with a plurality of light source slits 7, each of which is 1 mm wide and 20 mm long. The light source 3 is disposed on the inner side of the housing 1, with its light emitting direction directed toward the opening of the housing 1. The light source 3 is provided with a power supply 4, which can be a rechargeable battery or a non-rechargeable battery for easy replacement.

[0028] The hot rolling flatness meter laser quick replacement auxiliary device of the present invention has a simple structure, is easy to manufacture, and is convenient to carry, install, disassemble and use, and is highly practical. Example

[0029] like Figure 1As shown, the flatness instrument includes several laser modules 17 and an instrument glass window 10 arranged up and down. The laser of the flatness instrument works in the form of a module. Each laser module 17 includes a mounting bracket 15, a bracket rotation stepper motor 16 provided on the upper surface of the mounting bracket 15, and multiple lasers 14 provided on the lower surface of the mounting bracket 15. Taking each laser module 17 as an example, 9 lasers 14 are installed in 3 rows, and the 9 lasers 14 are evenly arranged in 3 rows, with three lasers 14 in each row. The mounting bracket 15 can be driven to rotate by the bracket rotation stepper motor 16, thereby adjusting the direction of the laser light emitted by each laser 14. The relative position of each laser 14 is fixed, and the rotation angle is the same. They can be regarded as a whole. Each laser 14 emits a laser light 12 and shines through the instrument glass window 10 on the surface of the strip below for measurement. The flatness meter adopts a frame structure, and the instrument glass window 10 thereon is a detachable structure, which is convenient for replacing the laser 14 inside. This structure can be used to install the hot rolling flatness meter laser quick replacement auxiliary device in Example 1.

[0030] The present invention provides a method for quickly replacing a laser of a hot rolling flatness instrument, comprising:

[0031] S1. Place the hot rolling flatness meter laser quick-change auxiliary device in Example 1 on the instrument glass window 10 at a position below the laser module 17 and fix it to the instrument glass window 10 through the rear-end fixing knob 5, so that the device and the instrument glass window 10 are fixed as one and no longer move. Adjust the adjustable reflector 2 so that it forms a 45° angle with the instrument glass window 10 and fix it through the front-end fixing knob 6. Before installing the hot rolling flatness meter laser quick-change auxiliary device, it is necessary to install the power supply 4 on the lamp source 3. The color of the lamp source 3 should be selected to be the color corresponding to the color of the laser light emitted by the laser 14. For example, if the color of the laser light 12 is red, the color of the lamp source 3 can be selected to be green for obvious contrast.

[0032] S2. Determine the number and spacing of the light source slots 7 on the light source slot plate 11 based on the number and spacing of the rows of lasers 14 on the laser module 17, and manufacture the plate to ensure that the spacing between adjacent light source slots 7 is consistent with the spacing between two adjacent rows of lasers 14. The light source slot plate 11 can also be configured as a retractable structure so that the position of the light source slots 7 thereon can be adjusted according to actual conditions.

[0033] S3. Adjust the mounting bracket 15 by rotating the stepper motor 16 via the bracket so that the laser beams 12 emitted by each row of three lasers 14 form a 45° angle with the instrument glass window 10, and form a first laser spot A, a second laser spot B, and a third laser spot C on the instrument glass window 10, respectively. Simultaneously, each laser reflected beam 13 after each laser beam 12 is reflected by the instrument glass window 10 forms a first reflection point A', a second reflection point B', and a third reflection point C' on the adjustable reflector 2, respectively. Mark each reflection point, using a dot with a diameter of less than 2 mm.

[0034] S4. Install a light source slit plate 11 at the lower portion of the adjustable reflector 2 at the opening of the box 1. Adjust the position of the light source slit plate 11 so that the slit light 8 emitted from each light source slit 7 by the light source 3 coincides with the first laser point A, the second laser point B, and the third laser point C of each row.

[0035] S5. Take two of the three lasers 14 in each row as a reference for replacing the other laser 14. Assume that one of the lasers 14 in a row needs to be replaced. The laser 14 corresponds to the second laser point B and the second reflection point B'. Turn off the laser power supply to ensure that all current components and the hot rolling flatness instrument laser quick replacement auxiliary device are fixed. Under the current state of the laser module 17, replace the laser 14 that needs to be replaced and roughly install and fix the new laser 14 (rough installation and fixation means that after the laser 14 is installed on the mounting bracket 15, it is simply fixed first, and its relative position can be adjusted in a small range as needed). Then power on the laser and observe whether the reflection points formed on the adjustable reflector 2 after the laser light 12 emitted by the other two lasers 14 is reflected by the instrument glass window 10 coincide with the reflection point positions A' and C' corresponding to the original mark: If the position If the positions are coincident, it means that the position state of the laser module 17 has not changed and no adjustment is required. The replaced laser 14 can be tightened. If there is a deviation in the position, it means that the state of the laser module 17 has changed. The laser module 17 is adjusted by rotating the stepping motor 16 through the bracket so that the laser light 12 emitted by the other two lasers 14 is reflected by the instrument glass window 10. The reflection points formed on the adjustable reflector 2 coincide with the positions of the originally marked reflection points. Then, the newly replaced laser 14 is adjusted so that the laser point formed by the laser light 12 emitted by it on the instrument glass window 10 coincides with the corresponding slit light 8. Then, the point position of the laser 14 is moved along the slit light 8. After the reflection point formed on the adjustable reflector 2 by the laser light 12 emitted by the laser 14 after reflecting from the instrument glass window 10 coincides with the reflection point B' corresponding to the laser 14, it indicates that this point position is the standard point position. The replaced laser 14 is tightened.

[0036] S6. Remove the hot rolling flatness meter laser quick replacement auxiliary device, adjust the laser module 17 to its original working position through the bracket rotating stepper motor 16, remove the hot rolling flatness meter laser quick replacement auxiliary device, clean the adjustable reflector 2, and complete the replacement of the laser 14.

Claims

1. A method for quickly replacing a hot rolling flatness meter laser, using a hot rolling flatness meter laser quick replacement auxiliary device, the hot rolling flatness meter laser quick replacement auxiliary device comprising a box (1), an adjustable reflector (2) and a light source (3); the box (1) is open on one side, and a plurality of front-end fixing knobs (6) and rear-end fixing knobs (5) are respectively provided on the front and rear sides of the bottom; the adjustable reflector (2) is rotatably arranged at the lower end of the opening of the box (1) and is fixed to the box (1) through the front-end fixing knob (6); the lower part of the adjustable reflector is located at the opening of the box (1) and is transparent and movably provided with an opaque light source slit. The slot plate (11) is provided with a plurality of light source slots (7); the light source (3) is provided on the inner side of the box (1), and the light emission direction thereof is toward the opening of the box (1); the flatness instrument comprises a laser module (17) and an instrument glass window (10) arranged up and down, the laser module (17) comprises a mounting bracket (15), a bracket rotation stepping motor (16) arranged on the upper surface of the mounting bracket (15), and a plurality of lasers (14) arranged on the lower surface of the mounting bracket (15), the plurality of lasers (14) are arranged in a plurality of rows, with at least three lasers (14) in each row, characterized in that, include: S1, placing the hot rolling flatness instrument laser quick replacement auxiliary device on the instrument glass window (10) at a position below the laser module (17) and fixing it to the instrument glass window (10) through the rear end fixing knob (5), adjusting the adjustable reflector (2) so that it forms a predetermined angle with the instrument glass window (10) and fixing it through the front end fixing knob (6); S2, determining the number and spacing of the light source slots (7) on the light source slot plate (11) according to the number of rows and row spacing of the lasers (14) on the laser module (17), ensuring that the spacing between adjacent light source slots (7) is consistent with the spacing between two adjacent rows of lasers (14); S3, adjusting the mounting bracket (15) by rotating the stepping motor (16) of the bracket so that the laser beams (12) emitted by at least three lasers (14) in each row form a predetermined angle with the instrument glass window (10), and respectively form a first laser point (A), a second laser point (B), and a third laser point (C) on the instrument glass window (10), and at the same time, each of the laser beams (12) is reflected by the instrument glass window (10) to form a first reflection point (A'), a second reflection point (B'), and a third reflection point (C') on the adjustable reflector (2), and marking each reflection point; S4, arranging the light source slit plate (11) at the lower part of the adjustable reflector (2) at the opening of the box (1), and adjusting the position of the light source slit plate (11) so that the slit light (8) emitted from each of the light source slits (7) of the light source (3) coincides with the first laser point (A), the second laser point (B), and the third laser point (C) of each row; S5. Take two of the at least three lasers (14) in each row as a reference for replacing another laser (14). In the current state of the laser module (17), replace one of the lasers (14) and install and fix the new laser (14). Observe whether the reflection points formed on the adjustable reflector (2) by the laser light (12) emitted by the other two lasers (14) after being reflected by the instrument glass window (10) coincide with the positions of the reflection points corresponding to the original marks: if the positions coincide, it means that the state of the laser module (17) has not changed, and no adjustment is required. The replaced laser (14) can be tightened; if there is a deviation in the position, it means that the state of the laser module (17) has changed. By adjusting the laser module (17), the laser light (12) emitted by the other two lasers (14) is reflected by the instrument glass window (10). The group (17) makes the reflection points formed on the adjustable reflector (2) by the laser light (12) emitted by the other two lasers (14) after being reflected by the instrument glass window (10) coincide with the positions of the originally marked reflection points, and then the newly replaced laser (14) is adjusted so that the laser point formed by the laser light (12) emitted by it on the instrument glass window (10) coincides with the corresponding slit light (8), and then the point position of the laser (14) is moved along the slit light (8), and when the reflection point formed on the adjustable reflector (2) by the laser light (12) emitted by the laser (14) after being reflected by the instrument glass window (10) coincides with the reflection point corresponding to the laser (14), it is indicated that this point position is a standard point position, and the replaced laser (14) is fastened; S6. Remove the hot rolling flatness meter laser quick replacement auxiliary device, adjust the laser module (17) to restore it to the original working position, and complete the replacement of the laser (14).

2. The method for quickly replacing a hot rolling flatness meter laser according to claim 1, characterized in that: Each reflection point marked on the adjustable reflection plate (2) is a circular dot with a diameter less than 2 mm.

3. The method for quickly replacing a hot rolling flatness meter laser according to claim 1, characterized in that: The angle formed between the adjustable reflector plate (2) and the instrument glass window (10) is 45°, and the angle formed between the laser light (12) emitted by the laser (14) and the instrument glass window (10) is 45°.

4. The method for quickly replacing a hot rolling flatness meter laser according to claim 1, characterized in that: The light source (3) is provided with a power supply (4).

5. The method for quickly replacing a hot rolling flatness meter laser according to claim 4, characterized in that: The power source (4) is a rechargeable battery or a non-rechargeable battery.

6. The method for quickly replacing a hot rolling flatness meter laser according to claim 1, characterized in that: The light source gap (7) has a width of 1 mm and a length of 20 mm.

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