CN216558768U - Hot-rolled steel plate thickness measuring device - Google Patents
Hot-rolled steel plate thickness measuring device Download PDFInfo
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- CN216558768U CN216558768U CN202122461714.0U CN202122461714U CN216558768U CN 216558768 U CN216558768 U CN 216558768U CN 202122461714 U CN202122461714 U CN 202122461714U CN 216558768 U CN216558768 U CN 216558768U
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Abstract
The utility model relates to the technical field of non-contact size measurement, and discloses a hot rolled steel plate thickness measuring device which comprises a measuring mechanism and an operating platform electrically connected with the measuring mechanism; the measuring mechanism comprises a C-shaped frame, two 2D laser sensors are respectively arranged on the upper frame and the lower frame of the C-shaped frame, and the two 2D laser sensors are oppositely arranged; and the C-shaped frame is also provided with an infrared temperature sensor probe for detecting the surface temperature of the hot rolled steel plate. The utility model has the beneficial effects that: the thickness of the steel plate can be measured more accurately, the influence of the inclination of the steel plate on the thickness measurement is eliminated, and the actual thickness of the hot rolled steel plate at normal temperature can be directly measured.
Description
Technical Field
The utility model relates to a non-contact size measurement technical field, especially a hot rolled steel plate thickness measuring device.
Background
Along with the development of two-dimensional laser displacement sensor application, can adopt two-dimensional laser displacement sensor to realize the various size detection of object at present, including the detection of thickness, traditional non-contact detection mode has X ray thickness detection and one-dimensional laser thickness to detect two kinds of methods, but when adopting X ray thickness to detect or one-dimensional laser thickness to detect steel sheet thickness, often can cause measuring error because of the steel sheet slope, simultaneously, when carrying out hot rolled steel sheet measurement, the thickness of hot rolled steel sheet can receive the influence of temperature and the steel sheet thickness under the normal atmospheric temperature is different.
Therefore, in order to solve the problems, a two-dimensional laser displacement sensor is designed to replace a one-dimensional laser displacement sensor to realize an accurate thickness measurement function, and the actual thickness of the hot-rolled steel plate at normal temperature can be directly measured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a hot rolled steel plate thickness measuring device which can accurately measure the thickness of a hot rolled steel plate at normal temperature without being influenced by the inclination of a hot rolled steel plate and the temperature of the steel plate.
The purpose of the utility model is realized by the following technical scheme:
comprises a measuring mechanism and an operating platform electrically connected with the measuring mechanism;
the measuring mechanism comprises a C-shaped frame, two 2D laser sensors are respectively arranged on the upper frame and the lower frame of the C-shaped frame, and the two 2D laser sensors are oppositely arranged;
and the C-shaped frame is also provided with an infrared temperature sensor probe for detecting the surface temperature of the hot rolled steel plate.
Furthermore, two 2D temperature sensors are also arranged on the C-shaped frame;
the two 2D temperature sensors are respectively arranged on the upper frame and the lower frame of the C-shaped frame and used for detecting the surface temperature of the 2D laser sensors arranged on the same frame.
Furthermore, a water cooling sleeve is respectively arranged at the two 2D laser sensors on the upper frame and the lower frame of the C-shaped frame. The water cooling external member is arranged to facilitate rapid cooling of the equipment.
Furthermore, the C-shaped frame is further provided with two vortex fans which are respectively arranged on the right sides of the two 2D laser sensors. The vortex fan can sweep fine impurities on the hot-rolled steel plate and on equipment parts.
Furthermore, the C-shaped frame can be arranged on the sliding table in a front-back sliding mode through the L-shaped fixing frame, and the sliding table is arranged on the base through bolts;
the L-shaped fixing frame comprises a C-shaped frame upright post and a cross beam mounting seat, the C-shaped frame upright post is vertically arranged at the right part of the cross beam mounting seat, and the C-shaped frame is arranged at the upper part of the C-shaped frame upright post and is positioned right above the cross beam mounting seat;
and a mouth-shaped seat used for reinforcing the C-shaped frame is also arranged between the C-shaped frame and the beam mounting seat.
Furthermore, a warning lamp is further arranged at the top end of the C-shaped frame upright post. When the 2D temperature sensor detects that the temperature is too high, or mechanical equipment breaks down, the warning light is immediately turned on to give an alarm.
Furthermore, an industrial computer and a motion control card are arranged inside the operating platform, and a folding display, an emergency stop button, a start button, a switching button, a water-cooling switch and a fan switch are arranged on the upper surface of the operating platform;
the operation table is also provided with an operation table cover plate covering the upper surface of the operation table and an operation table front door arranged on one side surface of the operation table.
Further, the range of the laser 2D sensor is 50mm, the repeatability is 5um, and the linearity is 0.1% FS.
The utility model has the following advantages: (1) the thickness measurement is carried out by adopting the 2D laser sensor, namely, two-dimensional laser is adopted to replace one-dimensional laser, each profile of the two-dimensional laser can obtain data of a plurality of points, the influence of impurity removal points can be removed by a curve fitting method, and when a steel plate inclines, the upper and lower 2D laser sensors can synchronously measure the inclined angle, so that the influence of measuring the inclined edge by single-point laser displacement is avoided, and further, the measurement error caused by the inclination of the steel plate can be avoided;
(2) the infrared temperature sensor probe is arranged to detect the heat of the steel plate in real time, so that the measured thickness value of the steel plate is the thickness value of the steel plate at normal temperature after temperature compensation, the thickness of the steel plate can be more accurately measured, the influence of the temperature of the steel plate on thickness measurement is eliminated, and the actual thickness of the hot rolled steel plate at normal temperature is directly obtained.
Drawings
FIG. 1 is a schematic view of a C-shaped frame of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the console of the present invention;
FIG. 4 is a schematic view of an operation panel according to the present invention;
FIG. 5 is a schematic diagram of the one-dimensional laser and two-dimensional laser measurement of the steel plate inclination of the present invention;
FIG. 6 is a measurement error curve of thickness error as a function of steel plate angle;
FIG. 7 is a schematic view of a thickness measuring system according to the present invention;
FIG. 8 is a schematic diagram of the present invention;
FIG. 9 is a schematic diagram of the present invention;
FIG. 10 is a schematic view of a hot rolled steel sheet passing in parallel between two 2D laser sensors;
FIG. 11 is a schematic view of a pitch angle between laser emitted from the 2D laser sensor and a steel plate;
FIG. 12 is a schematic view of a deflection angle between laser emitted from the 2D laser sensor and a steel plate;
in the figure:
1. a C-shaped frame; 2. a warning light; 3. c-shaped frame upright columns; 4. a mouth-shaped seat; 6. a slider mounting base; 7. a sliding table; 8. a drag chain box; 9. a base; 10. a beam mounting seat; 11. a servo motor; 13. a drag chain; 15. a 2D laser sensor; 16. a 2D temperature sensor; 18. a water-cooling kit; 19. an infrared temperature sensor probe; 20. a vortex fan; 22. a probe host of an infrared temperature sensor; 23. a control circuit board; 24. a temperature conditioning module; 27. an operating floor cover plate; 28. an operation table; 29. a console front door; 30. folding the display; 31. an emergency stop button; 32. a start button; 33. a boot button; 34. a switch button; 35. A water-cooling switch; 36. and (6) a fan switch.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, but the scope of the utility model is not limited to the following.
As shown in fig. 1 to 5, the thickness measuring device for the hot rolled steel plate comprises a C-shaped frame 1, an infrared temperature sensor probe 19, two 2D laser sensors 15, two 2D temperature sensors 16, two turbo fans 20 and two water cooling kits 18.
The C-shaped frame 1 is vertically arranged on the sliding table 7 through an L-shaped fixing frame, and the two 2D laser sensors 15 are oppositely arranged on the upper frame and the lower frame of the C-shaped frame 1; meanwhile, the infrared temperature sensor probe 19 is arranged at the upper frame of the C-shaped frame 1; when the hot rolled steel plate passes through the middle of the C-shaped frame 1, the distance between the hot rolled steel plate and the two 2D temperature sensors 16 which are arranged oppositely up and down can be measured, the thickness of the hot rolled steel plate can be calculated according to the measured distance, meanwhile, the infrared temperature sensor probe 19 which is arranged on the upper frame of the C-shaped frame 1 measures the temperature of the hot rolled steel plate, then, temperature compensation is carried out on the thickness of the hot rolled steel plate according to the temperature of the hot rolled steel plate measured by the 2D temperature sensors 16, finally, the actual thickness of the hot rolled steel plate at normal temperature is obtained, and due to the fact that two-dimensional laser is adopted for thickness measurement, measurement errors caused by steel plate deflection are eliminated, and the measurement result is more accurate.
When the hot rolled steel plate passes through the detection equipment, the hot rolled steel plate normally passes through the laser displacement detection position straightly, but the steel plate does not pass through the laser displacement detection position straightly due to other reasons, such as the situation that the steel plate passes through the laser displacement detection position straightly on site, as shown in fig. 5, the left side of fig. 5 is the measurement situation when the steel plate passes through straightly at a one-dimensional laser position, the right side of fig. 5 is the measurement situation when the steel plate passes through straightly at a two-dimensional laser position, the real thickness of the steel plate is a, and the thickness of the steel plate measured by the one-dimensional laser when the steel plate has an inclined angle is b. When the steel plate is not straight through, the error generated by the steel plate skew cannot be corrected by the one-dimensional laser ranging, because enough data points do not exist, but the error generated by the steel plate skew passing can be corrected by the two-dimensional laser ranging because enough data points exist. As shown in fig. 6, the lower curve in fig. 6 is an error generated by the steel plate when the two-dimensional laser measurement is at a certain angle, and the upper curve is an error generated by the steel plate when the one-dimensional laser measurement is at a certain angle, and as can be seen from fig. 6, when the steel plate passes through the detection position in a skew manner, the thickness error generated by the two-dimensional laser measurement is almost zero and is very stable, and the thickness error generated by the one-dimensional laser measurement increases with the increase of the angle.
Meanwhile, on the upper and lower frames of the C-shaped frame 1, a 2D temperature sensor 16 is respectively arranged at the left side of each of the two 2D laser sensors 15, a water cooling kit 18 is respectively arranged at the adjacent position of each of the two 2D laser sensors 15, a turbo fan 20 is respectively arranged at the right side of each of the two 2D laser sensors 15, the 2D temperature sensors 16 monitor the temperature of the 2D laser sensors 15 in real time, the turbo fan 20 blows and blows the equipment, and the water cooling kit 18 ensures the rapid heat dissipation of the equipment.
In the scheme, the water cooling external member 18, the vortex fan 20, the 2D temperature sensor 16 and the infrared temperature sensor probe 19 are respectively and electrically connected with the operating platform 28, the C-shaped frame 1 is also provided with a control circuit board 23, an infrared temperature sensor probe host 22 and a temperature conditioning module 24, the infrared temperature sensor probe 19 is electrically connected with the operating platform 28 through the infrared temperature sensor probe host 22, and the 2D temperature sensor 16 is electrically connected with the operating platform 28 through the temperature conditioning module 24; the operation table 28 contains an industrial computer, a motion control card and the like, the motion control card in the operation table 28 controls the detection position of the C-shaped frame 1 on the thickness measuring device, the detection position is reliable when the thickness of the C-shaped frame 1 is detected, and the device can respond to a protection mechanism of the device in time after the device judges a fault and stop the C-shaped frame 1 in place, at the moment, a detector can see corresponding real-time position information on the folding display 30 of the operation table 28, and can operate the device to return to an initial position or a set specific position after the device is checked to be correct. In addition, when the operator starts to advance the C-frame 1 to the inspection position or exits the inspection position, the operator finds an obstacle in the middle of the advancement, and can press the emergency stop button 31 on the operation panel of the operation table 28, when the emergency stop button 31 is pressed, the apparatus will respond to the protection mechanism to stop the advancement or retraction of the apparatus to the initial position, and after waiting for the inspection of the operator, the operator can continue to release the emergency stop button 31 key, and then operate the retraction of the apparatus to the initial position or the set specific position by the system.
In the scheme, a folding display 30, an emergency stop button 31, a start button 32, a start button 33, a water-cooling switch 35, a fan switch 36 and a switching button 34 for page switching and function switching are arranged on an operation panel of the operation table 28, the two water-cooling kits 18 and the two vortex fans 20 can be correspondingly controlled through the water-cooling switch 35 and the fan switch 36 on the operation table 28, and the infrared temperature sensor probe 19, the two 2D laser sensors 15 and the two 2D temperature sensors 16 can be started and stopped through the start button 32 and the emergency stop button 31.
When this scheme equipment is started, at first, start button 33 on operation panel 28 needs to be pressed, start button 32 starting equipment is opened again, and press fan switch 36 and water-cooling switch 35, start two vortex fans 20 and water-cooling external member 18, in the measurement process, water-cooling external member 18 carries out the cooling treatment that lasts to two-dimensional laser sensor, hot-rolled steel plate passes from C type frame 1 middle part level, two vortex fans 20 blow to the tow sides of hot-rolled steel plate, clear away debris such as iron fillings on the hot-rolled steel plate surface of surveying, also can clear away the debris on the surface of two 2D laser sensor 15 simultaneously. In the operation process, when the 2D temperature sensor 16 detects that a certain 2D laser sensor 15 is too hot, the warning light 2 arranged at the top end of the C-shaped frame upright post 3 is turned on, an operator presses the emergency stop button 31 on the operation panel 27 to check the fault of the equipment, and meanwhile, the equipment exits from the detection position, and the water cooling system carries out self-cooling and can continue to be used when the temperature fed back by the 2D temperature sensor 16 is in a normal range.
In the scheme, a C-shaped frame 1 is fixed on the upper part of a C-shaped frame upright post 3, the lower end of the C-shaped frame upright post 3 is vertically and fixedly installed at the right end of a cross beam installation seat 10, the C-shaped frame upright post 3 and the cross beam installation seat 10 form an L-shaped fixed frame, the C-shaped frame 1 is arranged above the cross beam installation seat 10, a mouth-shaped seat 4 is further installed between the C-shaped frame 1 and the cross beam installation seat 10, and the mouth-shaped seat 4 is used for reinforcing the C-shaped frame 1; meanwhile, the beam mounting seat 10 is arranged on the sliding table 7 in a front-back sliding mode through the sliding table mounting seat 6, the sliding table mounting seat 6 is driven by the servo motor 11 to move back and forth in the sliding table 7, meanwhile, the left end of the beam mounting seat 10 is connected with a drag chain 13 arranged on the base 9, and the drag chain 13 is arranged in the drag chain box 8.
The overall mechanical structure of the thickness measuring system is as shown in fig. 1 and fig. 2, the C-shaped frame 1 is located at the right end of the guide rail under the conventional detection condition, when special working conditions are met, the position of the C-shaped frame 1 can be adjusted according to the detection working conditions, and when the device gives an alarm, the C-shaped frame 1 moves to the leftmost end and stops working.
In the scheme, as shown in fig. 3 and 4, an operation table front door 29 is further arranged on one side surface of the operation table 28, so that parts inside the operation table 28 can be conveniently installed and overhauled, an operation table cover plate 27 is further arranged on the operation table 28, and the operation table cover plate 27 is matched with the top of the operation table 28, so that when the machine is stopped and is not used, a folding display 30, an emergency stop button 31, a starting button 32, a starting button 33, a water cooling switch 35 and the like arranged on the upper surface of the operation table 28 can be covered inside through the operation table cover plate 27, and the functions of protection and dust prevention are achieved.
Referring to fig. 9, the distance between the two 2D laser sensors 15 is calibrated to be L, and when the steel plate is located in the middle of the two laser sensors, the distance between the upper 2D laser sensor 15 and the upper surface of the hot-rolled steel plate is L1And a distance L from the lower surface of the hot rolled steel sheet measured by the 2D laser sensor 15 located below2The thickness H of the steel sheet can be obtained as shown in the following formula:
H＝L-L1-L2。
referring to fig. 10 to 12, after the two 2D laser sensors 15 are installed, calibration processing is required. Ideally, two 2D laser sensors 15 may be mounted directly opposite each other up and down and parallel to the steel plate, as shown in fig. 10. However, in practice, the installation of the two 2D laser sensors 15 cannot guarantee that the sensors are arranged right opposite and completely parallel to the steel plate under ideal conditions, and the pitch angle (rotation angle around the X axis) and the deflection angle (rotation angle around the Y axis) of the sensors need to be obtained through calibration. Because the laser is applied to the surface of the steel plate, and the upper surface and the lower surface of the steel plate can be considered to be parallel, the side roll angle (the rotation angle around the Z axis) has no influence on the detection result; it is assumed that the two 2D laser sensors 15 are installed at rear pitch angles α 1 and α 2 and at deflection angles β 1 and β 2, respectively, as shown in fig. 11 and 12. By means of a specially made standard block, the four angles α 1, α 2, β 1 and β 2 and the distance L between the two 2D laser sensors 15 can be calculated. And inputting the calibrated parameters into a system to finish the calibration of the device, so that the device system can automatically eliminate the angle influence of alpha 1, alpha 2, beta 1 and beta 2 in the subsequent measurement, and the thickness H of the steel plate can be measured by a space coordinate conversion detection principle.
The calibration principle of the pitch angle and the deflection angle is as follows: firstly, the two-dimensional laser sensors carry out angle correction on the pitch angle. By the power supply of the whole system, when the two-dimensional laser sensor starts to work, a line of laser is emitted. Placing a calibration block tool, wherein a groove is formed in the middle of the calibration block, a line laser is printed on the calibration block, whether the line laser is positioned in the groove of the calibration block is judged, and if the line laser is positioned in the groove of the calibration block, the installation of the sensor is basically correct; if not, the mounting of the 2D laser sensor 15 is adjusted so that its laser line is located in the groove of the calibration block. The adjustment is equivalent to the correction of the pitching angle of the two-dimensional laser sensor, and the pitching angle correction of the two-dimensional laser sensors is the same correction mode. The deflection angle of the two-dimensional laser sensor is corrected next. The deflection angle is corrected by the system software. When the line laser of the two-dimensional laser sensor is printed on the calibration block, the line laser can feed back the corresponding point cloud data of the two-dimensional laser sensor. When the point cloud data fed back to the two-dimensional laser sensor is fitted into a straight line. It is understood that, if in the standard case, the straight line is fitted to a constant function y-b in a rectangular coordinate system when the two-dimensional laser sensor has no deflection angle (i.e., y-k x + b, where k is 0). When the two-dimensional laser sensor has a deflection angle, the formula of the straight line under a rectangular coordinate system is y-k x + b (k is not equal to 0), and what software needs to do at this time is to correct the k value to 0 through the rotational translation of the coordinate system, namely completing the calibration of the deflection angle.
As shown in fig. 7, the whole thickness measuring system of the thickness measuring device in the present solution can be divided into a detecting device, an auxiliary device, a host device, and a software system; the detection equipment comprises temperature detection equipment consisting of an infrared temperature sensor probe 19 and two 2D temperature sensors 16, and laser detection equipment consisting of two 2D laser sensors 15, namely the main functions of the detection equipment comprise laser detection and temperature detection; the auxiliary equipment comprises a water cooling system formed by two water cooling kits 18 and an air blowing system formed by two vortex fans 20; the host equipment is arranged in the operation table 28, and the main functions of the host equipment comprise data display, fault alarm and position control; the main functions of the software system comprise a data processing function and a report function.
The measuring range of the 2D laser sensor 15 is selected according to the actual requirements of the project, and in the scheme, the steel plate needing hot rolling is smaller than 23mm, so that preferably, the distance between the two 2D laser sensors 15 is within 100mm, the measuring range of the 2D laser sensor 15 is 50mm, the repeatability is 5um, and the linearity is 0.1% FS.
Claims (8)
1. The utility model provides a hot rolled steel plate thickness measuring device which characterized in that:
comprises a measuring mechanism and an operating platform (28) electrically connected with the measuring mechanism;
the measuring mechanism comprises a C-shaped frame (1), two 2D laser sensors (15) are respectively arranged on the upper frame and the lower frame of the C-shaped frame (1), and the two 2D laser sensors (15) are oppositely arranged;
and the C-shaped frame (1) is also provided with an infrared temperature sensor probe (19) for detecting the surface temperature of the hot rolled steel plate.
2. The hot-rolled steel sheet thickness measuring apparatus according to claim 1, characterized in that: the C-shaped frame (1) is also provided with two 2D temperature sensors (16);
the two 2D temperature sensors (16) are respectively arranged on the upper frame and the lower frame of the C-shaped frame (1) and used for detecting the surface temperature of the 2D laser sensors (15) arranged on the same frame.
3. The hot-rolled steel sheet thickness measuring device according to claim 2, characterized in that: and a water cooling sleeve (18) is respectively arranged at the two 2D laser sensors (15) on the upper and lower frames of the C-shaped frame (1).
4. A hot rolled steel sheet thickness measuring apparatus according to claim 3, characterized in that: the C-shaped frame (1) is further provided with two vortex fans (20), and the two vortex fans (20) are respectively arranged on the right sides of the two 2D laser sensors (15).
5. A hot rolled steel sheet thickness measuring apparatus according to any one of claims 1 to 4, characterized in that: the C-shaped frame (1) can be arranged on the sliding table (7) in a front-back sliding mode through the L-shaped fixing frame, and the sliding table (7) is arranged on the base (9) through bolts; the L-shaped fixing frame comprises a C-shaped frame upright post (3) and a cross beam mounting seat (10), the C-shaped frame upright post (3) is vertically arranged at the right part of the cross beam mounting seat (10), and the C-shaped frame (1) is arranged at the upper part of the C-shaped frame upright post (3) and is positioned right above the cross beam mounting seat (10);
and a mouth-shaped seat (4) used for reinforcing the C-shaped frame (1) is also arranged between the C-shaped frame (1) and the beam mounting seat (10).
6. The thickness measuring device of a hot rolled steel sheet according to claim 5, characterized in that: and a warning lamp (2) is further arranged at the top end of the C-shaped frame upright post (3).
7. The thickness measuring device of a hot rolled steel sheet according to claim 6, characterized in that: an industrial computer and a motion control card are arranged in the operating platform (28), and a folding display (30), an emergency stop button (31), a start button (32), a start button (33), a switching button (34), a water-cooling switch (35) and a fan switch (36) are arranged on the upper surface of the operating platform (28); the operating table (28) is also provided with an operating table cover plate (27) covering the upper surface of the operating table (28) and an operating table front door (29) arranged on one side surface of the operating table (28).
8. The thickness measuring device of a hot rolled steel sheet according to claim 7, characterized in that: the measuring range of 2D laser sensor (15) be 50mm, repeatability 5um, the linearity is 0.1% FS.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122461714.0U CN216558768U (en) | 2021-10-12 | 2021-10-12 | Hot-rolled steel plate thickness measuring device |
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| CN202122461714.0U CN216558768U (en) | 2021-10-12 | 2021-10-12 | Hot-rolled steel plate thickness measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793218A (en) * | 2023-06-01 | 2023-09-22 | 镇江加勒智慧电力科技股份有限公司 | Bus duct manufacturing process, bus duct manufacturing device, and readable storage medium |
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2021
- 2021-10-12 CN CN202122461714.0U patent/CN216558768U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793218A (en) * | 2023-06-01 | 2023-09-22 | 镇江加勒智慧电力科技股份有限公司 | Bus duct manufacturing process, bus duct manufacturing device, and readable storage medium |
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