Convexity measuring equipment arranged on hot rolling mill

Abstract

The utility model discloses convexity measuring equipment arranged on a hot mill, and relates to the technical field of steel production equipment. Comprising a high-voltage X-ray tube located on a first supporting frame and used for generating X-rays; the ray detection array is located on the second supporting frame and used for receiving the X rays penetrating through the detected strip steel; the grating projection system is used for forming a grating array on the surface of the strip steel; the Moire camera is used for shooting the shape of the grating line in real time and obtaining the straightness and width of the strip steel according to the change and shape of the grating line; the upper part of the sliding frame body is a box body, and the lower part is a C-shaped frame; the high-voltage X-ray tube, the grating projection system and the Moire camera are placed in the box body, and the ray detection array is located on the C-shaped frame. By measuring the straightness and width of the strip steel in real time, problems in the production process can be found in time, unqualified products are avoided, the rejection rate is reduced, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of steel production equipment, specifically to a crown measuring device equipped on a hot rolling mill. Background Technology

[0002] The straightness of strip steel is a crucial indicator of its surface flatness. Unevenness, such as waviness, warping, or tilting, can lead to several problems: Uneven strip steel is prone to misalignment, folding, or breakage during subsequent processing such as cold rolling, galvanizing, and coating, affecting processing efficiency and product quality. Uneven strip steel results in uneven thickness distribution, affecting dimensional accuracy and consequently impacting the user experience. Uneven strip steel is also susceptible to surface defects such as scratches and indentations during transportation and storage, reducing the product's appearance quality. Strip steel width is a critical parameter in product specifications. Incorrect width can cause the following problems: Width deviations can result in products that do not meet customer specifications, impacting market competitiveness. Excessive or insufficient width leads to material waste and increased production costs. Uneven width strip steel is prone to edge defects during subsequent processing, affecting processing efficiency and product quality. Currently available crown measurement equipment is typically unable to measure both the straightness and width of strip steel.

[0003] Furthermore, traditional equipment requires roll removal during measurement, which not only increases production line downtime but also reduces production efficiency. Additionally, due to the high-temperature radiation and cooling steam in the hot rolling environment, the measuring components of traditional equipment are susceptible to heat interference, leading to decreased measurement accuracy and even equipment malfunction. Utility Model Content

[0004] The purpose of this invention is to provide a crown measuring device for hot rolling mills, which can simultaneously measure the straightness and width of strip steel, thereby improving measurement efficiency and reducing the equipment footprint.

[0005] To achieve the above objectives, this application proposes a crown measuring device for use on a hot rolling mill, comprising:

[0006] A high-voltage X-ray tube, located on the first support frame, is used to generate X-rays;

[0007] The X-ray detection array, located on the second support frame, is used to receive X-rays that have penetrated the strip being tested.

[0008] A grating projection system for forming a grating array on the surface of a steel strip;

[0009] A moiré camera is used to capture the shape of grating lines in real time, and to obtain the straightness and width of the strip based on the changes and shape of the grating lines.

[0010] The sliding frame has a box-shaped upper part and a C-shaped lower part; the high-pressure X-ray tube, grating projection system, and moiré camera are placed inside the box-shaped upper part, and the X-ray detection array is located on the C-shaped lower part.

[0011] In one embodiment, the walls of the housing and the C-frame have interconnected circulating water cooling channels with cooling water inlets and outlets. Both the cooling water inlet and outlet are connected to a water chiller to provide constant-temperature circulating water for the sliding frame.

[0012] In one embodiment, pulleys are connected to both sides of the C-shaped frame, and the pulleys move on the I-beam slide rails. The I-beam slide rails are symmetrically arranged on the field support, which includes a measurement station and a maintenance station. The sliding frame moves between the measurement station and the maintenance station.

[0013] In one embodiment, the C-frame includes a horizontally arranged first support frame, a vertically arranged connecting frame, and a horizontally arranged second support frame, wherein the first support frame is connected to pulleys on both sides, and the connecting frame passes through the gap of the on-site support maintenance station.

[0014] In one embodiment, the second support frame is located below the strip rollers, and X-rays emitted by the high-pressure X-ray tube pass through the gaps between the strip rollers and are received by the X-ray detection array.

[0015] In one embodiment, the width of the connecting frame and the second support frame is smaller than the width of the first support frame and the box body.

[0016] In one embodiment, the bottom of the housing and the first support frame have a first light-transmitting window and a second light-transmitting window, the moiré camera is tilted inward and located at the first light-transmitting window, and the grating projection mechanism is tilted inward and located at the second light-transmitting window.

[0017] In one embodiment, ray windows are provided on the bottom of the housing and on the first support frame.

[0018] In one embodiment, the side of the enclosure is provided with a removable protective plate to facilitate equipment maintenance and repair.

[0019] In one embodiment, the field support is fixed by anchor bolts.

[0020] Compared with existing technologies, the above-mentioned technical solution adopted by this utility model has the following advantages: By measuring the straightness and width of the strip steel in real time, problems in the production process can be detected in a timely manner, avoiding the generation of unqualified products, reducing scrap rate, and lowering production costs. In addition, the measurement of straightness and width can ensure the consistency of strip steel products and meet customers' high requirements for product specifications and quality.

[0021] The main equipment, including the high-voltage X-ray tube, grating projection mechanism, and moiré camera, is centrally located in the upper enclosure, while the lower part of the C-frame houses only the X-ray detection array. This design significantly reduces the volume of the lower part of the C-frame, enabling ultra-narrow measurement lines that can be completed through existing roller gaps, eliminating the need for roller removal and greatly improving production efficiency. The upper enclosure effectively insulates against external heat and humidity, protecting the internal equipment from high-temperature environments. When the C-frame is moved to the maintenance position, comprehensive maintenance can be performed simply by opening the side panels of the enclosure, making the operation convenient. Furthermore, the on-site support only requires anchor bolts for fixing, eliminating the need for track laying, simplifying construction and reducing installation and maintenance costs. Attached Figure Description

[0022] Figure 1 Schematic diagram of the principle of flatness and width measurement;

[0023] Figure 2 Schematic diagram of the crown measuring device equipped on the hot rolling mill;

[0024] Figure 3 This is a schematic diagram of a convexity measuring device.

[0025] Among them: 1. C-shaped frame, 11. First support frame, 111. Pulley, 12. Connecting frame, 13. Second support frame, 2. Box body, 3. Moiré camera, 4. High-pressure X-ray tube, 5. Grating projection mechanism, 6. Field support, 61. I-beam slide rail, 7. X-ray detection array, 8. Strip steel, 9. Strip steel roller. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly specified. "Several" means one or more, unless otherwise expressly specified.

[0029] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] This embodiment provides a crown measuring device equipped on a hot rolling mill, including:

[0032] lenticular projection systems, such as Figure 1 As shown, a grating array is formed on the surface of a strip steel. The shape and distribution of the grating lines are adjusted according to the flatness and width measurement requirements of the strip steel. Preferably, the grating projection system may include a light source, a grating sheet, and a projection lens. The light source adopts a high-brightness, high-stability LED or laser light source to ensure the clarity and stability of the grating lines. The grating sheet is the core optical element used to generate the grating lines. The projection lens is used to project the grating lines on the grating sheet onto the surface of the strip steel to ensure the clarity and uniformity of the grating lines.

[0033] A moiré camera is used to capture real-time changes in the shape of grating lines on the surface of a steel strip. Based on these changes and the shape of the grating lines, the straightness and width of the steel strip are determined.

[0034] A high-pressure X-ray tube is used to generate high-energy X-rays; after the X-rays penetrate the strip steel, they are received by the X-ray detection array and used to measure the thickness distribution of the strip steel.

[0035] The X-ray detection array is used to receive X-rays after they have penetrated the steel strip. It should be noted that the X-ray detection array consists of multiple scintillation crystal detection units.

[0036] Sliding frame, such as Figure 2As shown, the system includes an upper enclosure and a lower C-frame. The high-voltage X-ray tube, grating projection system, and moiré camera are housed within the enclosure, while the X-ray detection array is located on the C-frame. The walls of the enclosure and the C-frame have interconnected circulating water cooling channels to provide constant-temperature cooling water to the sliding frame; a water chiller provides constant-temperature circulating water to the sliding frame, ensuring stable operation of the equipment in high-temperature environments.

[0037] The I-beam slide rails are symmetrically installed on the on-site support. Pulleys are connected to both sides of the C-frame, and these pulleys move along the I-beam slide rails, enabling automatic switching of the sliding frame between measurement and maintenance positions. Preferably, the on-site support is fixed with anchor bolts to ensure the stability of the equipment during operation.

[0038] In a preferred embodiment provided in this example, the C-frame includes a horizontally arranged first support frame, a vertically arranged connecting frame, and a horizontally arranged second support frame. The first support frame has pulleys connected to both sides, and the connecting frame passes through the gap in the on-site support maintenance station. The second support frame is located below the strip rollers. X-rays emitted by the high-pressure X-ray tube pass through the gap between the strip rollers and are received by the X-ray detection array, such as... Figure 3 As shown.

[0039] The crown measurement equipment of this application is suitable for measuring crown, straightness and width of hot-rolled strip steel production lines. It can provide comprehensive and accurate measurement data support for product quality control, significantly improving production efficiency and product quality. The C-frame structure is compact and suitable for installation in existing roll gaps. It does not require roll removal, simplifying the site layout and construction difficulty.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A crown measuring device equipped on a hot rolling mill, characterized by, The utility model relates to a kind of portable strip steel flatness and width measuring device, including: High-voltage X-ray tube, located on the first support frame, for generating X-ray; Ray detection array, located on the second support frame, for receiving X-ray after penetrating the measured strip steel; Grating projection system, for forming grating array on the surface of strip steel; Moire camera, for shooting the shape of grating line in real time, according to the change and shape of grating line to obtain the flatness and width of strip steel; Sliding frame body, the upper part is box, the lower part is C-shaped frame;The high-voltage X-ray tube, grating projection system, moire camera are placed in box, and the ray detection array is located on C-shaped frame.

2. A crown measurement device for a hot rolling mill as claimed in claim 1, characterised in that, The wall of the box, the wall of C-shaped frame has the circulation water cooling channel that is connected, which has cooling water inlet and cooling water outlet, and the cooling water inlet and cooling water outlet are connected to water cooling machine, to provide constant temperature circulating water for sliding frame body.

3. A crown measurement device for a hot rolling mill as claimed in claim 1, wherein The C-shaped frame is connected with pulley on both sides, and pulley moves on I-beam slide rail, and the I-beam slide rail is symmetrically arranged on field support, and the field support includes measuring station and repair station, and sliding frame body moves between measuring station and repair station.

4. A crown measurement device for a hot rolling mill as claimed in claim 3, wherein The C-shaped frame includes horizontally arranged first support frame, vertically arranged connecting frame and horizontally arranged second support frame, wherein the pulley is connected on both sides of the first support frame, and the connecting frame passes through the gap of repair station of field support.

5. A crown measurement device for a hot rolling mill as claimed in claim 4, characterised in that, The second support frame is located below strip steel roller, and X-ray emitted by high-voltage X-ray tube passes through the gap between strip steel roller and is received by ray detection array.

6. A crown measurement device for a hot rolling mill as claimed in claim 4, wherein The width of connecting frame and second support frame is less than the width of first support frame and box.

7. A crown measurement device for a hot rolling mill as claimed in claim 4, wherein First light-transmitting window and second light-transmitting window are opened on the bottom of box and first support frame, and moire camera is inwardly inclined and located at first light-transmitting window, and grating projection mechanism is inwardly inclined and located at second light-transmitting window.

8. A crown measurement device for a hot rolling mill as claimed in claim 1, wherein Ray window is opened on the bottom of box and first support frame.

9. The crown measurement device on a hot rolling mill according to claim 1, wherein The side of box is provided with detachable guard plate.

10. A crown measurement device for a hot rolling mill as claimed in claim 3, wherein The field support is fixed by anchor bolt.

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