An intelligent detection device and calibration method for the position of steel billets entering a heating furnace

Abstract

An intelligent detection device and calibration method for the position of steel billets entering a heating furnace, which relates to the technical field of steel billets entering a heating furnace. A first laser rangefinder is installed on the side of the furnace door of the heating furnace, and the first laser rangefinder is located on one side of the roller conveyor. A second laser rangefinder and a calibration cold detection structure are provided on the other side of the roller conveyor. The beneficial effects of the present invention are: by adding two laser rangefinders to the edge of the roller conveyor, the position of the steel plate on the roller conveyor can be accurately measured, and the laser rangefinder, intelligent alarm and one-button calibration functions are reasonably utilized to achieve accurate measurement of the position of the steel plate on the roller conveyor, paving the way for automatic centering of the steel plate.

Description

Technical Field

[0001] The present invention relates to the technical field of steel billets entering a heating furnace, and in particular to an intelligent detection device and calibration method for the position of steel billets entering a heating furnace. Background Art

[0002] Billets are transported from the hot delivery area to the heating furnace entrance via a roller conveyor. Manual centering is required at the entrance. The roller conveyor speed is adjusted to ensure the center of the billet is aligned with the center of the furnace entrance. Once centered, the billet is moved transversely and fed into the heating furnace. Manual centering can be inaccurate, resulting in uneven and uneven billet alignment, incomplete combustion, and poor product quality. This can waste energy. Summary of the Invention

[0003] The purpose of the present invention is to address the shortcomings and defects in the existing technology and provide an intelligent detection device and calibration method for the position of steel billets entering a heating furnace. By adding two laser rangefinders at the edge of the roller, accurate measurement of the position of the steel plate on the roller can be achieved. By rationally utilizing the laser rangefinder, intelligent alarm and one-button calibration functions, accurate measurement of the position of the steel plate on the roller can be achieved, paving the way for automatic centering of the steel plate.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions: an intelligent detection device and calibration method for the position of steel billets entering a heating furnace, the intelligent detection device comprising a heating furnace and a roller conveyor, a roller conveyor being provided at the entrance of the heating furnace, a first laser rangefinder being installed on the side of the entrance of the heating furnace, and the first laser rangefinder being located on one side of the roller conveyor, and a second laser rangefinder and a calibration cold detection structure being provided on the other side of the roller conveyor;

[0005] The calibration method includes: installing two sets of first laser rangefinders with protective devices on one side of the roller, and installing two sets of second laser rangefinders with protective devices on the other side of the roller; the first laser rangefinder is installed at a distance of 50 cm from the edge of the roller and 90 cm from the wall of the heating furnace, at which time, the angle between the first laser rangefinder and the vertical line of the roller is ∠1; the second laser rangefinder is installed directly opposite to the first laser rangefinder, and the second laser rangefinder is 50 cm from the edge of the roller, at which time, the angle between the second laser rangefinder and the vertical line of the roller is ∠1. The angle is ∠2; a calibration cold detection structure is installed at a distance of 100 cm from the edge of the roller and 130 cm from the second laser rangefinder on the side of the furnace entrance operation table of the heating furnace; the steel billet is manually transported until the calibration cold detection structure just detects the end of the steel billet. At this time, the PLC reads the values ​​of the first laser rangefinder A1 and the second laser rangefinder A2, and obtains the value of sin∠1 by dividing A1 by 1300; obtains the value of sin∠2 by dividing A2 by 1300. The PLC records the value of sin∠1 and The value of sin∠2 is stored in the PLC; during the actual transportation of the billet, the PLC reads the values ​​of the first laser rangefinder B1 and the second laser rangefinder B2 in real time, and calculates the value of B1 multiplied by sin∠1 to obtain the first horizontal position of the billet; calculates the value of B2 multiplied by sin∠2 to obtain the second horizontal position of the billet; the values ​​of the first horizontal position and the second horizontal position are compared in real time, and if the absolute value of the difference between the two is 3>cm, an intelligent alarm "laser rangefinder needs to be calibrated" is issued; establish PLC and operation page The communication between the two sides WINCC is realized, and the cold detection signal, the value of the first laser rangefinder, the value of sin∠1, the first horizontal position, the value of the laser rangefinder on the operating side, the value of sin∠2, the second horizontal position and the absolute value of the difference between the first horizontal position and the second horizontal position are displayed in real time on the operation page WINCC. It has an alarm component indication and a one-key calibration button is set on the screen. When the steel billet is manually transported to the point where the calibration cold detection structure just detects the end of the steel billet, press the one-key calibration button and the PLC will automatically complete the calibration.

[0006] Furthermore, the heating furnace is provided with a first furnace entry channel and a second furnace entry channel for processing steel billets.

[0007] Furthermore, there are at least two calibration cold inspection structures.

[0008] After adopting the above technical solution, the beneficial effects of the present invention are: by adding two laser rangefinders at the edge of the roller, accurate measurement of the position of the steel plate on the roller is achieved, and the laser rangefinder, intelligent alarm and one-button calibration functions are reasonably utilized to achieve accurate measurement of the position of the steel plate on the roller, paving the way for automatic centering of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 yes Figure 1 Schematic diagram of the enlarged size structure at point A in the middle.

[0012] Figure 3 It is a picture of WINCC in the present invention.

[0013] Description of the accompanying drawings: heating furnace 1, first laser rangefinder 2, roller 3, second laser rangefinder 4, calibration cold inspection structure 5, first furnace entry channel 101, second furnace entry channel 102. DETAILED DESCRIPTION

[0014] See Figure 1-Figure 3 As shown, the technical solution adopted in this specific embodiment is: the intelligent detection device includes a heating furnace 1 and a roller conveyor 3. The roller conveyor 3 is provided at the furnace entrance of the heating furnace 1. A first laser rangefinder 2 is installed on the side of the furnace entrance of the heating furnace 1, and the first laser rangefinder 2 is located on one side of the roller conveyor 3. A second laser rangefinder 4 and a calibration cold detection structure 5 are provided on the other side of the roller conveyor 3.

[0015] The calibration method comprises:

[0016] S1, install two sets of first laser rangefinders 2 with protective devices on one side of the roller conveyor 3, and install two sets of second laser rangefinders 4 with protective devices on the other side of the roller conveyor 3;

[0017] S2, the first laser rangefinder 2 is installed 50 cm away from the edge of the roller 3 and 90 cm away from the wall of the heating furnace 1. At this time, the angle between the first laser rangefinder 2 and the vertical line of the roller 3 is ∠1;

[0018] S3, the second laser rangefinder 4 is installed opposite to the first laser rangefinder 2, and the second laser rangefinder 4 is 50 cm away from the edge of the roller table. At this time, the angle between the second laser rangefinder 4 and the vertical line of the roller table 3 is ∠2;

[0019] S4, install a calibration cold detection structure 5 at a distance of 100 cm from the edge of the roller 3 and 130 cm from the second laser rangefinder 4 on the side of the furnace entrance operation table of the heating furnace 1;

[0020] S5, manually transport the billet until the calibration cold inspection structure 5 just detects the end of the billet. At this time, the PLC reads the values ​​of the first laser rangefinder 2A1 and the second laser rangefinder 4A2, and obtains the value of sin∠1 by dividing A1 by 1300; and obtains the value of sin∠2 by dividing A2 by 1300. The PLC records the values ​​of sin∠1 and sin∠2 and stores them in the PLC.

[0021] S6: During the actual transportation of the billet, the PLC reads the values ​​of the first laser rangefinder 2B1 and the second laser rangefinder 4B2 in real time, calculates the value of B1 multiplied by sin∠1 to obtain the first horizontal position of the billet, and calculates the value of B2 multiplied by sin∠2 to obtain the second horizontal position of the billet. The values ​​of the first and second horizontal positions are compared in real time. If the absolute value of the difference between the two is greater than 3cm, an intelligent alarm is issued: "Laser rangefinder calibration required."

[0022] S7, establish communication between PLC and operation page WINCC, and display the cold detection signal, the value of the first laser rangefinder 2, the value of sin∠1, the first horizontal position, the value of the laser rangefinder on the operating side, the value of sin∠2, the second horizontal position and the absolute value of the difference between the first horizontal position and the second horizontal position in real time on the operation page WINCC. It has an alarm component indication and a one-key calibration button is set on the screen. When the steel billet is manually transported to the calibration cold detection structure 5 and the end of the steel billet is just detected, press the one-key calibration button and the PLC automatically completes S5.

[0023] As a more specific description of the present invention, the heating furnace 1 is provided with a first furnace entrance 101 and a second furnace entrance 102 for processing steel billets.

[0024] As a more specific description of the present invention, there are at least two calibration cold detection structures 5.

[0025] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A calibration method for an intelligent detection device for the position of billets entering a heating furnace, characterized by: The intelligent detection device comprises a heating furnace (1) and a roller conveyor (3); a roller conveyor (3) is provided at an entrance door of the heating furnace (1); a first laser rangefinder (2) is installed on the side of the entrance door of the heating furnace (1), and the first laser rangefinder (2) is located on one side of the roller conveyor (3); a second laser rangefinder (4) and a calibration cold detection structure (5) are provided on the other side of the roller conveyor (3); The calibration method comprises: S1, two sets of first laser rangefinders (2) with protective devices are installed on one side of the roller conveyor (3), and two sets of second laser rangefinders (4) with protective devices are installed on the other side of the roller conveyor (3); S2, the first laser rangefinder (2) is installed at a distance of 50 cm from the edge of the roller (3) and 90 cm from the wall of the heating furnace (1), and the angle formed by the first laser rangefinder (2) and the vertical line of the roller (3) is ∠1; S3, the second laser rangefinder (4) is installed directly opposite to the first laser rangefinder (2), the second laser rangefinder (4) is 50 cm away from the edge of the roller, and the angle between the second laser rangefinder (4) and the vertical line of the roller (3) is ∠2; S4, installing a calibration cold detection structure (5) at a position 100 cm from the edge of the roller conveyor (3) and 130 cm horizontally from the second laser rangefinder (4) on the side of the furnace entrance operating table of the heating furnace (1); S5, manually transporting the steel billet until the calibration cold inspection structure (5) just detects the end of the steel billet, at which time the PLC reads the value A1 of the first laser rangefinder (2) and the value A2 of the second laser rangefinder (4), and obtains the value of sin∠1 by dividing A1 by 1300; and obtains the value of sin∠2 by dividing A2 by 1300. The PLC records the values ​​of sin∠1 and sin∠2 and stores them in the PLC; S6, during the actual transportation of the steel billet, the PLC reads the value B1 of the first laser rangefinder (2) and the value B2 of the second laser rangefinder (4) in real time, and calculates the value of B1 multiplied by sin∠1 to obtain the first horizontal position of the steel billet; calculates the value of B2 multiplied by sin∠2 to obtain the second horizontal position of the steel billet; compares the values ​​of the first horizontal position and the second horizontal position in real time, and if the absolute value of the difference between the two is greater than 3 cm, an intelligent alarm "the laser rangefinder needs to be calibrated" is issued; S7, establish communication between PLC and operation page WINCC, and display the cold detection signal, the value of the first laser rangefinder (2), the value of sin∠1, the first horizontal position, the value of the second laser rangefinder (4), the value of sin∠2, the second horizontal position, and the absolute value of the difference between the first horizontal position and the second horizontal position on the operation page WINCC in real time, with an alarm indication, and set a one-key calibration button. When the steel billet is manually transported to the calibration cold detection structure (5) and the end of the steel billet is just detected, press the one-key calibration button, and the PLC automatically completes S5.

2. The calibration method for an intelligent detection device for the position of billets entering a heating furnace according to claim 1, characterized in that: The heating furnace (1) is provided with a first furnace inlet channel (101) and a second furnace inlet channel (102) for processing steel billets.

3. The calibration method for an intelligent detection device for the position of billets entering a heating furnace according to claim 1, characterized in that: The calibration cold inspection structures (5) are provided with at least two.

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