Non-contact type hot steel plate thickness detection device

Abstract

The utility model relates to a non -contact hot steel plate thickness detection device belongs to metallurgical industry hot metal thickness detection control equipment technical field, the utility model discloses a technical scheme is: the laser range finder (1) is installed in the above of measured object through the mounting support (4), and the protective cover (2) is installed in the outside of laser range finder (1), and the cooling dust removal air pipe (3) is led into the inside of protective cover (2), and the input and output of control system are connected with laser range finder (1) and HMI man -machine interface respectively. The utility model has the beneficial effect that: through setting laser range finder in the above of measured object, the measurement cost is low, is far away from hot steel plate, and the maintenance is convenient and fast, safe and reliable, and the service life is long, satisfies the production need.

Description

Technical Field

[0001] This utility model relates to a non-contact hot steel plate thickness detection device, belonging to the technical field of hot metal thickness detection and control equipment in the metallurgical industry. Background Technology

[0002] Online inspection of hot-rolled slabs typically employs non-contact laser thickness gauges. These gauges generally consist of two laser displacement sensors positioned opposite each other, one above the other. The upper and lower sensors measure the positions of the upper and lower surfaces of the slab, respectively, and the thickness is calculated from the measurements. The advantage of laser thickness gauges lies in their non-contact measurement method, making them more accurate than contact gauges and preventing accuracy loss due to wear.

[0003] Because complete thickness gauges are complex in structure, difficult to maintain, and expensive, they are not suitable for use in places where high control accuracy is not required, such as measuring the thickness of slabs exiting a heating furnace. Summary of the Invention

[0004] The purpose of this invention is to provide a non-contact hot steel plate thickness detection device. By setting a laser rangefinder above the object being measured, the measurement cost is low, it is far from the hot steel plate, and it is convenient, quick, safe, reliable, and has a long service life, thus meeting production needs and solving the aforementioned problems in the background technology.

[0005] The technical solution of this utility model is: a non-contact hot steel plate thickness detection device, comprising a laser rangefinder, a protective cover, a cooling and dust removal duct, a mounting bracket, and a control system. The laser rangefinder is mounted above the object being measured via the mounting bracket, the protective cover is mounted outside the laser rangefinder, and the cooling and dust removal duct is inserted into the protective cover. The input and output terminals of the control system are connected to the laser rangefinder and the HMI (human-machine interface), respectively.

[0006] The angle between the laser rangefinder and the surface of the object being measured is greater than 45°.

[0007] The mounting bracket is equipped with an angle adjustment structure and a telescopic structure.

[0008] The laser rangefinder is a SICK DT50-2 laser rangefinder, which emits a 4-20mA standard signal. The 4-20mA standard signal is connected to the analog signal channel of the control system.

[0009] The beneficial effects of this utility model are: by setting a laser rangefinder above the object being measured, the measurement cost is low, it is far away from the hot steel plate, maintenance is convenient, quick, safe and reliable, and the service life is long, thus meeting production needs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] In the diagram: 1. Laser rangefinder; 2. Protective cover; 3. Cooling and dust removal duct; 4. Mounting bracket; 5. Measured object; 6. Reference surface; 7. Furnace top platform; 8. Angle with the measured object. Detailed Implementation

[0012] To make the purpose, technical solution, and advantages of this utility model clearer, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described implementation cases are only a small part of this utility model, not all of them. All other implementation cases obtained by those skilled in the art based on the implementation cases of this utility model without creative effort are within the protection scope of this utility model.

[0013] A non-contact hot steel plate thickness detection device includes a laser rangefinder 1, a protective cover 2, a cooling and dust removal duct 3, a mounting bracket 4, and a control system. The laser rangefinder 1 is mounted above the object being measured via the mounting bracket 4. The protective cover 2 is mounted outside the laser rangefinder 1, and the cooling and dust removal duct 3 extends into the protective cover 2. The input and output terminals of the control system are connected to the laser rangefinder 1 and the HMI (human-machine interface) respectively.

[0014] The angle between the laser rangefinder 1 and the surface of the object being measured is greater than 45°.

[0015] The mounting bracket 4 is equipped with an angle adjustment structure and a telescopic structure.

[0016] The laser rangefinder 1 is a SICK DT50-2 laser rangefinder, which emits a 4-20mA standard signal. The 4-20mA standard signal is connected to the analog signal channel of the control system.

[0017] In practical applications, a suitable installation location should be selected based on the working conditions, ideally with the measurement point directly above the object being measured (5). At a minimum, the angle between the ray emitted by the laser rangefinder (1) and the surface of the object being measured should be greater than 45°; otherwise, measurement accuracy will be affected, or even measurement failure may occur. The mounting bracket (4) should be extendable, allowing the laser rangefinder mounted on it to adjust its left, right, and pitch angles, thus ensuring the rangefinder is installed in the most suitable measurement position. Due to the harsh working environment, the laser rangefinder needs protection and cooling, as well as anti-interference measures. Installing a protective cover (2) and adding a cooling and dust removal duct (3) can effectively solve this problem.

[0018] Set the parameters of the SICK DT50-2 laser rangefinder, select a suitable measurement range, and connect the 4-20mA standard signal to the analog channel of the control system. Select a fixed reference plane, and use the data measured on this reference plane as the zero point for each measurement, saving the zero-point data. When the object being measured passes through the measurement point, obtain measurement data at positions less than the zero point through multiple samplings. Calculate the thickness of the object being measured based on the measurement angle in the program and save it in the database. Display the measurement data on the computer through the human-machine interface (HMI).

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-contact hot-rolled steel plate thickness detection device, characterized in that: It includes a laser rangefinder (1), a protective cover (2), a cooling and dust removal duct (3), a mounting bracket (4), and a control system; the laser rangefinder (1) is mounted above the object being measured via the mounting bracket (4), the protective cover (2) is mounted outside the laser rangefinder (1), and the cooling and dust removal duct (3) is inserted into the protective cover (2); the input and output terminals of the control system are connected to the laser rangefinder (1) and the HMI human-machine interface, respectively.

2. The non-contact hot steel plate thickness detection device according to claim 1, characterized in that: The angle between the laser rangefinder (1) and the surface of the object being measured is greater than 45°.

3. The non-contact hot steel plate thickness detection device according to claim 1, characterized in that: The mounting bracket (4) is equipped with an angle adjustment structure and a telescopic structure.

4. The non-contact hot steel plate thickness detection device according to claim 1, characterized in that: The laser rangefinder (1) is a SICK DT50-2 laser rangefinder, which emits a 4-20mA standard signal. The 4-20mA standard signal is connected to the analog channel of the control system.

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