Real-time online measurement device and method for maximum warping height of strip steel

Abstract

The invention provides a real-time online measuring device and method for the maximum warping height of strip steel, the device comprises an adjusting mechanism, positioning mechanisms and limiting seats, the adjusting mechanism is arranged between the limiting seats, a measuring block is arranged on the midperpendicular of the adjusting mechanism, the measuring block is in communication connection with a display instrument and a computer, and the positioning mechanisms are symmetrically arranged on the two sides of the adjusting mechanism; the adjusting mechanism is used for adjusting the distance between the two side positioning mechanisms so that the two side positioning mechanisms can be tightly attached to the two ends of the strip steel, the measuring block is used for measuring the maximum warping height of the strip steel, and the limiting seat is used for limiting movement of the adjusting mechanism along with the strip steel. The maximum warping height of the strip steel is measured according to the principle that the chord length of the strip steel measuring position is determined through the positioning mechanisms and the perpendicular bisector of the chord length is the chord height, the maximum warping height of the strip steel of various specifications is measured by adjusting the distance between the positioning mechanisms at the two ends of the adjusting mechanism, and the maximum warping height of the strip steel is measured through continuous movement of the positioning wheel and the height fixing wheel relative to the strip steel. Continuous measurement of the maximum warping height of the strip steel is achieved, convenience and rapidness are achieved, and results are accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of spiral welded pipe production, and in particular relates to a real-time online measurement device and method for the maximum warping height of a steel strip. Background Art

[0002] In the production process of spiral submerged arc welded pipes, the warping degree of the strip after straightening directly affects the control of the groove, especially in the production of thick-walled steel pipes, which has a greater impact on the welding quality. The maximum warping height becomes an important monitoring data in the production of spiral welded pipes.

[0003] The common method for measuring the maximum warping height of steel strips is to place a benchmark on the steel strips. Using the benchmark as a reference, the measurement personnel stand on the running steel strips and use a ruler to measure the maximum warping height of the steel strips. This manual measurement method is difficult to read data, has low measurement accuracy, collects less data, and is labor-intensive.

[0004] On June 13, 2023, the State Intellectual Property Office announced an invention patent with patent number CN202310193467.1 and patent name "Method, device and electronic equipment for measuring the warping state of steel plates". The device includes a first measurement module, a second measurement module, a third measurement module and a curve measurement module. During measurement, the warping arc and the initial origin are first determined on the steel plate to be measured, and then the initial origin is used as the detection origin, and the head end of the measuring rod is placed on the detection origin, and the tail end of the measuring rod is placed on the detection midpoint along the measured direction of the warping arc; the angle sensor device after zeroing is placed on the measuring rod to determine the angle to be measured; according to the angle to be measured and the measuring rod, the warping height from the detection midpoint to the origin mark is determined; then the detection midpoint is updated to the new detection origin, and the measurement steps are repeated to determine the new warping height, and finally the warping state of the steel plate to be measured is determined according to each warping height. The device can only statically measure the warping height at a certain point of the steel plate, and cannot continuously and real-time measure the warping height during the operation of the steel strip. Summary of the invention

[0005] The purpose of the present invention is to provide a real-time online measuring device for the maximum warping height of a steel strip, so as to overcome the above-mentioned technical problems existing in the prior art.

[0006] Another object of the present invention is to provide a real-time online measurement method for the maximum warping height of strip steel, so as to realize the measurement of the maximum warping height of strip steel of various specifications. The continuous movement of the positioning wheel and the height fixing wheel relative to the strip steel is utilized to realize the continuous measurement of the maximum warping height of the strip steel, which is convenient, fast and the results are accurate.

[0007] To this end, the technical solution provided by the present invention is as follows: A real-time online measuring device for the maximum warping height of a steel strip comprises an adjusting mechanism, a positioning mechanism and a limiting seat, wherein the limiting seats are symmetrically arranged on both sides of the steel strip, the adjusting mechanism is arranged between the limiting seats, a measuring block is arranged on the mid-vertical line of the adjusting mechanism, the measuring block is communicatively connected with a display instrument and a computer, and the positioning mechanism is symmetrically arranged on both sides of the adjusting mechanism; The adjusting mechanism is used to adjust the distance between the positioning mechanisms on both sides so that the positioning mechanisms on both sides are respectively close to the two ends of the strip, the measuring block is used to measure the maximum warping height of the strip, and the limit seat is used to limit the movement of the adjusting mechanism with the strip.

[0008] The adjustment mechanism comprises a screw and a guide rod, wherein the guide rod is arranged in parallel with the screw, a hand wheel is installed at one end of the screw, one end of the screw is a positive thread, and the other end is a negative thread; The measuring block is mounted on the screw rod through a fixing block. The fixing block is provided with two through holes. The guide rod and the screw rod respectively pass through a through hole. The screw rod can rotate in the through hole. The guide rod is interference fit with the through hole.

[0009] The positioning mechanism includes a base, a tension spring, a positioning wheel and a height-fixing wheel. The lower end surface of the base is provided with two mounting plates, through holes are provided on the mounting plates, a connecting hole is provided on the upper end of the wheel shaft of the positioning wheel, the wheel shaft of the positioning wheel is connected to the base through a pin shaft, the pin shaft passes through the through hole and the connecting hole, and the wheel shaft of the positioning wheel can swing along the pin shaft; There are two tension springs, which are symmetrically arranged on both sides of the axle of the positioning wheel. One end of the tension spring is fixed to the middle of the axle of the positioning wheel, and the other end of the tension spring is fixedly connected to the base of the positioning mechanism. The positioning wheel is lower than the height-fixing wheel, and the axle of the positioning wheel is vertically arranged, and the axis of the height-fixing wheel is perpendicular to the axle of the positioning wheel.

[0010] The positioning mechanism is provided with a light hole and a thread hole, the guide rod passes through the light hole, and the thread rod passes through the thread hole.

[0011] There are two height-fixing wheels, which are symmetrically arranged on both sides of the wheel axle of the positioning wheel, and the two height-fixing wheels are arranged along the length direction of the strip steel.

[0012] The measuring block is a distance measuring sensor.

[0013] A real-time online measurement method for the maximum warping height of a steel strip adopts a real-time online measurement device for the maximum warping height of the steel strip, and limit seats are placed on both sides of the steel strip, an adjustment mechanism is placed upstream of the limit seats, and a positioning mechanism is placed on the surface of the steel strip. The distance between the positioning mechanisms on both sides is adjusted by the adjustment mechanism, so that the positioning wheels on both sides are vertically close to the edge of the steel strip, and the height-fixing wheels on both sides are at the highest warping point of the edge of the steel strip. Under the action of the limit seats, the positioning wheels and the height-fixing wheels rotate with the movement of the steel strip, and the maximum warping height of the steel strip is continuously measured by a measuring block. The reading of the measuring block is read to obtain the real-time measurement value of the maximum warping height of the steel strip.

[0014] When measuring strip steels of different specifications, it is necessary to calibrate the real-time online measuring device for the maximum warping height of the strip steel. During calibration, the projection of the measuring block and the bottom surfaces of the height-fixing wheels on both sides are located in the same plane.

[0015] The positioning mechanism is placed on the surface of the strip. During the measurement process, when the width of the strip is greater than the distance between the positioning wheels on both sides, the edge of the strip pushes the positioning wheel outward, causing the wheel axis of the positioning wheel to move outward. At this time, the tension spring is stretched, and the tension positioning wheel is pressed against the edge of the strip. When the width of the strip is smaller than the distance between the positioning wheels on both sides, the spring is tightened to rebound, causing the positioning wheels to retract inward and fit tightly against the edge of the strip.

[0016] The beneficial effects of the present invention are: The real-time online measuring device for the maximum warping height of steel strip provided by the present invention measures the maximum warping height of steel strip based on the principle that the midline of the length is the height according to the length of the strip at the measuring point determined by the positioning mechanism. The maximum warping height of steel strips of various specifications can be measured by adjusting the spacing between the positioning mechanisms at both ends of the adjusting mechanism. The continuous movement of the positioning wheel and the height-fixing wheel relative to the strip can be used to achieve continuous measurement of the maximum warping height of the steel strip, which is convenient, fast and accurate.

[0017] The measuring device uses two sets of tension springs and limit designs to ensure that the positioning wheel can be adjusted left and right as the strip width tolerance changes and always close to the edge of the strip, so as to effectively cooperate with the measuring block installed on the vertical line of the adjustment mechanism to be at the center of the strip width, achieving accurate measurement values. Bearings are set in the positioning wheel and the height-fixing wheel to ensure that the measuring device slides flexibly on the strip to avoid damaging the strip surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an implementation method of the present invention; Figure 2 is a top view of an embodiment of the present invention; Figure 3 is a side view of an embodiment of the present invention; Figure 4 It is a scene implementation diagram of the present invention.

[0019] In the figure: 1. Measuring block; 2. Adjusting mechanism; 2-1. Screw rod; 2-2. Guide rod; 2-3. Hand wheel; 2-4. Fixed block; 3. Positioning mechanism; 3-1. Positioning wheel; 3-2. Height-fixing wheel; 3-3. Tension spring; 3-4. Base; 3-5. Axle; 3-6. Pin; 3-7. Mounting plate; 4. Limit seat; 5. Display instrument; 6. Strip steel. Implementation

[0020] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0022] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings. Example

[0023] This embodiment provides a real-time online measurement device for the maximum warping height of a steel strip. Figure 1 As shown, it includes an adjustment mechanism 2, a positioning mechanism 3 and a limit seat 4, the limit seat 4 is symmetrically arranged on both sides of the strip 6, the adjustment mechanism 2 is arranged between the limit seats 4, a measuring block 1 is arranged on the mid-vertical line of the adjustment mechanism 2, the measuring block 1 is communicatively connected with a display instrument 5 and a computer, and the positioning mechanism 3 is symmetrically arranged on both sides of the adjustment mechanism 2; The adjusting mechanism 2 is used to adjust the distance between the positioning mechanisms 3 on both sides so that the positioning mechanisms 3 on both sides are respectively close to the two ends of the strip steel 6, the measuring block 1 is used to measure the maximum warping height of the strip steel 6, and the limit seat 4 is used to limit the adjustment mechanism from moving with the strip steel 6.

[0024] The real-time online measurement device for the maximum warping height of the steel strip provided by the present invention measures the maximum warping height of the steel strip 6 based on the principle that the vertical line of the vertical length is the vertical height according to the determination of the measuring length of the steel strip 6 by the positioning mechanism 3, and the measurement of the maximum warping height of the steel strip 6 of various specifications is achieved by adjusting the spacing between the positioning mechanisms 3 at both ends of the adjustment mechanism 2, and the continuous movement of the positioning mechanism 3 relative to the steel strip 6 is used to achieve continuous measurement of the maximum warping height of the steel strip 6, which is convenient and fast, and the result is accurate. The continuous measurement data can be sent to a computer through a communication interface for storage and export. Example

[0025] Based on Example 1, this embodiment provides a real-time online measurement device for the maximum warping height of a steel strip, such as Figure 2 As shown, the adjustment mechanism 2 includes a screw rod 2-1 and a guide rod 2-2, the guide rod 2-2 is arranged parallel to the screw rod 2-1, a hand wheel 2-3 is installed at one end of the screw rod 2-1, one end of the screw rod 2-1 is a positive wire, and the other end is a negative wire; The measuring block 1 is mounted on the screw rod 2-1 through a fixing block 2-4. The fixing block 1 has two through holes. The guide rod 2-2 and the screw rod 2-1 pass through a through hole respectively. The screw rod 2-1 can rotate in the through hole. The guide rod 2-2 is interference fit with the through hole.

[0026] The positioning mechanism 3 symmetrically installed on both sides of the adjustment mechanism 2 can reduce or increase the spacing synchronously under the action of the positive and negative wires and the guide rod 2-2 to meet the measurement requirements of strip steel 6 of different specifications. When the hand wheel 2-3 rotates, the screw rod 2-1 rotates, so that the positioning mechanism moves linearly along the screw rod under the guidance of the guide rod 2-2. At the same time, the fixed block 2-4 is interference fit with the guide rod 2-2, so the position of the fixed block 2-4 relative to the screw rod 2-1 remains unchanged. Example

[0027] Based on Example 1, this embodiment provides a real-time online measurement device for the maximum warping height of a steel strip, such as Figure 3 As shown, the positioning mechanism 3 includes a base 3-4, a tension spring 3-3, a positioning wheel 3-1 and a height-fixing wheel 3-2. The lower end surface of the base 3-4 is provided with two mounting plates 3-7. The mounting plates 3-7 are provided with through holes. The upper end of the axle 3-5 of the positioning wheel 3-1 is provided with a connecting hole. The axle 3-5 of the positioning wheel 3-1 is connected to the base 3-4 through a pin 3-6. The pin 3-6 passes through the through hole and the connecting hole. The axle 3-5 of the positioning wheel 3-1 can swing along the pin 3-6. There are two tension springs 3-3, which are symmetrically arranged on both sides of the axle 3-5 of the positioning wheel 3-1. One end of the tension spring 3-3 is fixed to the middle of the axle 3-5 of the positioning wheel 3-1, and the other end of the tension spring 3-3 is fixedly connected to the base 3-4 of the positioning mechanism 3. The positioning wheel 3-1 is lower than the height-fixing wheel 3-2, and the axle 3-5 of the positioning wheel 3-1 is vertically arranged, and the axis of the height-fixing wheel 3-2 is perpendicular to the axle 3-5 of the positioning wheel 3-1.

[0028] like Figure 4 As shown, when the width of the steel strip 6 is greater than the spacing between the positioning wheels 3-1 on both sides, the steel strip 6 squeezes the positioning wheels 3-1 outward. At this time, the axle 3-5 of the positioning wheel 3-1 moves away from the steel strip 6, driving the lower part of the tensioning spring 3-3 to move synchronously. However, since the upper part of the tensioning spring 3-3 is fixed on the base 3-4, the movement of the positioning wheel 3-1 causes the tensioning spring 3-3 to stretch, and the positioning wheel 3-1 is pulled close to the steel strip 6 under the action of the elastic force.

[0029] The base 3-4 is designed with a limiter on the inner side of the two mounting plates 3-7. After the axle 3-5 of the positioning wheel 3-1 is connected to the base 3-4, a gap of 2 mm is reserved on the inner side of the mounting plate 3-7. When the width of the strip narrows within the tolerance range, the positioning wheel 3-1 contracts inwardly under the action of the tensioning spring 3-3. Due to the limiter design, the axle 3-5 of the positioning wheel 3-1 is limited in swinging and can only swing inwardly by a maximum of 10°, so that the positioning wheel can always be close to the edge of the strip when it contracts inwardly.

[0030] The present invention uses two sets of tension springs 3-3 and a limit design to ensure that the positioning wheel 3-1 can be adjusted left and right as the width tolerance of the strip steel 6 changes and always stays close to the edge of the strip steel 6, thereby effectively cooperating with the measuring block 1 installed on the perpendicular line of the adjustment mechanism 2 to be at the center of the width of the strip steel 6, thereby achieving the accuracy of the measurement value.

[0031] The present invention adjusts the spacing between the positioning mechanisms 3 at both ends through the adjustment mechanism 2 to achieve measurement of the maximum warping height of strip steel 6 of various specifications, and utilizes the continuous movement of the positioning wheel 3-1 and the height-fixing wheel 3-2 relative to the strip steel 6 to achieve continuous measurement of the maximum warping height of the strip steel 6, which is convenient, fast and accurate. Example

[0032] Based on Example 2, this example provides a real-time online measurement device for the maximum warping height of a steel strip, wherein a light hole and a wire hole are provided on the positioning mechanism 3, the guide rod 2-2 passes through the light hole, and the wire rod 2-1 passes through the wire hole.

[0033] like Figure 2 As shown, by setting the guide rod 2-2, the positioning mechanism 3 is guided along the movement of the screw rod 2-1. Example

[0034] Based on Example 3, this embodiment provides a real-time online measurement device for the maximum warping height of the strip steel, wherein there are two height-fixing wheels 3-2, which are symmetrically arranged on both sides of the axle 3-5 of the positioning wheel 3-1, and the two height-fixing wheels 3-2 are arranged along the length direction of the strip steel 6.

[0035] like Figure 3 As shown, each positioning mechanism 3 is provided with a set of two height-fixing wheels 3 - 2 , and the entire device is provided with two sets of height-fixing wheels 3 - 2 , so that the measuring device can be stably placed on the strip steel 6 .

[0036] Bearings are arranged inside the positioning wheel 3 - 1 and the height-fixing wheel 3 - 2 to ensure that the measuring device slides flexibly on the strip steel 6 and avoids damaging the surface of the strip steel 6 . Example

[0037] On the basis of Example 1, this example provides a real-time online measuring device for the maximum warping height of a steel strip, wherein the measuring block 1 is a distance measuring sensor.

[0038] The use of distance measuring sensors allows the zero position to be quickly set with one click, making the measurement work and reading simple and intuitive, and also making the calibration of the measuring device more convenient.

[0039] The present invention effectively utilizes the digital display value zeroing setting of the electronic digital display of the universal high-precision digital display distance measuring sensor, making the measurement work and reading simple and easy to understand, and also making each calibration work of the measuring device convenient. The measurement data is transmitted to the digital display instrument 5 set nearby through the communication interface, so that the operator can see the measurement data more conveniently and intuitively, further improving the work efficiency. Example

[0040] This embodiment provides a real-time online measurement device for the maximum warping height of a steel strip. Figure 1 , Figure 2 , Figure 3 As shown, it includes a measuring block 1 and an adjusting mechanism 2. The measuring block 1 is fixed on the adjusting mechanism 2 and is located on the mid-vertical line of the adjusting mechanism 2. The adjusting mechanism 2 includes a screw rod 2-1 and a guide rod 2-2. One end of the screw rod 2-1 is a positive thread, and the other end is a negative thread. A hand wheel 2-3 is installed at one end of the screw rod 2-1. A positioning mechanism 3 is installed on each side of the adjusting mechanism 2. The positioning mechanism 3 includes a positioning wheel 3-1, a set of fixed height wheels 3-2, and a set of tension springs 3-3.

[0041] During measurement, turn the hand wheel 2-3 to pre-adjust the spacing of the positioning wheels 3-1 to be slightly larger than the actual width of the steel strip 6. Place the limit seats 4 on the ground on both sides of the steel strip 6, place the measuring device on the surface of the steel strip 6, make the guide rod 2-2 lean against the upstream of the limit seat 4, turn the hand wheel 2-3, and the two sets of positioning mechanisms 3 will shrink inward synchronously, so that the height-fixing wheels 3-2 are attached to the surface of the steel strip 6, at the highest point of the warping of the edge of the steel strip 6, and the positioning wheels 3-1 at both ends are close to the edge of the steel strip 6 and the wheel axle 3-5 is in a vertical downward state. Under the action of the limit seat 4, the two sets of height-fixing wheels 3-2 and the positioning wheels 3-1 rotate with the movement of the steel strip 6. The measuring block 1 measures in real time and sends the data to the display instrument 5 set nearby, reads the reading of the display instrument 5, and obtains the real-time measurement value of the maximum warping height of the steel strip 6.

[0042] In this embodiment, the measuring block 1 is a distance sensor, which is firmly mounted on the fixing block 2-4 at the center of the adjustment mechanism 2 by fixing screws. The screw rod 2-1 is processed by a lathe, and the spacing between the positioning mechanisms 3 is adjusted by turning the hand wheel 2-3. Example

[0043] The present embodiment provides a real-time online measurement method for the maximum warping height of the steel strip, adopts a real-time online measurement device for the maximum warping height of the steel strip, places the limit seat 4 on both sides of the steel strip 6, the adjustment mechanism 2 is close to the upstream of the limit seat 4, and the positioning mechanism 3 is placed on the surface of the steel strip 6. The distance between the positioning mechanisms 3 on both sides is adjusted by the adjustment mechanism 2, so that the positioning wheels 3-1 on both sides are vertically close to the edge of the steel strip 6, and the height-fixing wheels 3-2 on both sides are at the highest warping point of the edge of the steel strip 6. Under the action of the limit seat 4, the positioning wheel 3-1 and the height-fixing wheel 3-2 rotate with the movement of the steel strip 6, and the maximum warping height of the steel strip 6 is continuously measured by the measuring block 1. The reading of the measuring block 1 is read to obtain the real-time measurement value of the maximum warping height of the steel strip 6.

[0044] When measuring strip steel 6 of different specifications, it is necessary to calibrate the real-time online measuring device for the maximum warping height of the strip steel. During calibration, the projection of the measuring block 1 and the bottom surfaces of the height-fixing wheels 3 - 2 on both sides are located in the same plane.

[0045] The positioning mechanism 3 is placed on the surface of the steel strip 6. During the measurement process, when the width of the steel strip 6 is greater than the distance between the positioning wheels 3-1 on both sides, the edge of the steel strip 6 pushes the positioning wheel 3-1 outward, so that the wheel axle 3-5 of the positioning wheel 3-1 moves outward. At this time, the tension spring 3-3 is stretched, and the tension positioning wheel 3-1 is tightly attached to the edge of the steel strip 6. When the width of the steel strip 6 is smaller than the distance between the positioning wheels 3 - 1 on both sides, the tension spring 3 - 3 rebounds, causing the positioning wheels 3 - 1 to retract inwards and cling to the edge of the steel strip 6 .

[0046] The present invention measures the maximum warping height of the steel strip 6 based on the principle that the midline of the length is the height according to the positioning mechanism 3 to determine the measuring point of the steel strip 6, and the maximum warping height of the steel strip 6 is measured by adjusting the spacing between the positioning mechanisms 3 at both ends of the adjusting mechanism 2, so as to realize the measurement of the maximum warping height of the steel strip 6 of various specifications, and utilizes the continuous movement of the positioning wheel 3-1 and the height-fixing wheel 3-2 relative to the steel strip 6 to realize the continuous measurement of the maximum warping height of the steel strip 6, which is convenient, fast and accurate.

[0047] The present invention uses two sets of tension springs 3-3 and a limit design to ensure that the positioning wheel 3-1 can be adjusted left and right as the width tolerance of the steel strip 6 changes and always stays close to the edge of the steel strip 6, thereby effectively cooperating with the measuring block 1 installed on the vertical line of the adjustment mechanism 2 to be at the center of the width of the steel strip 6, thereby achieving the accuracy of the measured value and having the quick function advantage of "continuously obtaining data group values".

[0048] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A real-time online measuring device for the maximum warping height of a steel strip, characterized in that: It includes an adjustment mechanism, a positioning mechanism and a limit seat, wherein the limit seats are symmetrically arranged on both sides of the strip, the adjustment mechanism is arranged between the limit seats, a measuring block is arranged on the mid-vertical line of the adjustment mechanism, the measuring block is communicatively connected with a display instrument and a computer, and the positioning mechanism is symmetrically arranged on both sides of the adjustment mechanism; The adjusting mechanism is used to adjust the distance between the positioning mechanisms on both sides so that the positioning mechanisms on both sides are respectively close to the two ends of the strip, the measuring block is used to measure the maximum warping height of the strip, and the limit seat is used to limit the movement of the adjusting mechanism with the strip.

2. The real-time online measuring device for the maximum warping height of a steel strip according to claim 1, characterized in that: The adjustment mechanism comprises a screw and a guide rod, wherein the guide rod is arranged in parallel with the screw, a hand wheel is installed at one end of the screw, one end of the screw is a positive thread, and the other end is a negative thread; The measuring block is mounted on the screw rod through a fixing block. The fixing block is provided with two through holes. The guide rod and the screw rod respectively pass through a through hole. The screw rod can rotate in the through hole. The guide rod is interference fit with the through hole.

3. The real-time online measuring device for the maximum warping height of a steel strip according to claim 1, characterized in that: The positioning mechanism includes a base, a tension spring, a positioning wheel and a height-fixing wheel. The lower end surface of the base is provided with two mounting plates, through holes are provided on the mounting plates, a connecting hole is provided on the upper end of the wheel shaft of the positioning wheel, the wheel shaft of the positioning wheel is connected to the base through a pin shaft, the pin shaft passes through the through hole and the connecting hole, and the wheel shaft of the positioning wheel can swing along the pin shaft; There are two tension springs, which are symmetrically arranged on both sides of the axle of the positioning wheel. One end of the tension spring is fixed to the middle of the axle of the positioning wheel, and the other end of the tension spring is fixedly connected to the base of the positioning mechanism. The positioning wheel is lower than the height-fixing wheel, and the axle of the positioning wheel is vertically arranged, and the axis of the height-fixing wheel is perpendicular to the axle of the positioning wheel.

4. The real-time online measuring device for the maximum warping height of a steel strip according to claim 2, characterized in that: The positioning mechanism is provided with a light hole and a thread hole, the guide rod passes through the light hole, and the thread rod passes through the thread hole.

5. The real-time online measuring device for the maximum warping height of a steel strip according to claim 3 is characterized in that: There are two height-fixing wheels, which are symmetrically arranged on both sides of the wheel axle of the positioning wheel, and the two height-fixing wheels are arranged along the length direction of the strip steel.

6. A real-time online measuring device for maximum warping height of a steel strip according to any one of claims 1 to 5, characterized in that: The measuring block is a distance measuring sensor.

7. A real-time online measurement method for the maximum warping height of a steel strip, characterized in that: The real-time online measuring device for the maximum warping height of the steel strip as described in claim 3 is adopted, and its characteristics are as follows: the limit seats are placed on both sides of the steel strip, the adjusting mechanism is close to the upstream of the limit seats, the positioning mechanism is placed on the surface of the steel strip, and the distance between the positioning mechanisms on both sides is adjusted by the adjusting mechanism so that the positioning wheels on both sides are vertically close to the edge of the steel strip, and the height-fixing wheels on both sides are at the highest warping point of the edge of the steel strip. Under the action of the limit seats, the positioning wheels and the height-fixing wheels rotate with the movement of the steel strip, and the maximum warping height of the steel strip is continuously measured by the measuring block, and the reading of the measuring block is read to obtain the real-time measurement value of the maximum warping height of the steel strip.

8. The real-time online measurement method for the maximum warping height of a steel strip according to claim 7, characterized in that: When measuring strip steels of different specifications, it is necessary to calibrate the real-time online measuring device for the maximum warping height of the strip steel. During calibration, the projection of the measuring block and the bottom surfaces of the height-fixing wheels on both sides are located in the same plane.

9. A real-time online measurement method for maximum warping height of a steel strip according to claim 7, characterized in that: The positioning mechanism is placed on the surface of the strip. During the measurement process, when the width of the strip is greater than the distance between the positioning wheels on both sides, the edge of the strip pushes the positioning wheel outward, causing the wheel axis of the positioning wheel to move outward. At this time, the tension spring is stretched, and the tension positioning wheel is pressed against the edge of the strip. When the width of the strip is smaller than the distance between the positioning wheels on both sides, the spring is tightened to rebound, causing the positioning wheels to retract inward and fit tightly against the edge of the strip.

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