A refining regional ladle car and molten steel tank hoisting laser precision measurement positioning system

Abstract

This invention relates to a laser-based precision measurement and positioning system for hoisting ladle cars and molten steel ladles in refining areas, belonging to the field of steel metallurgical refining production equipment control technology. It includes: a laser measurement module for collecting ladle car displacement data; a laser ranging unit for collecting the relative distance data between the molten steel ladle and the target position during hoisting; an interlocking control module that automatically triggers the action interlock of the ladle car and molten steel ladle equipment when the ladle car displacement data and relative distance data are within a set threshold range; and an automatic confirmation module that controls the ladle car and molten steel ladle equipment to automatically complete positioning when the ladle car displacement data and relative distance data meet set conditions. This invention, by introducing an interlocking control module, technically eliminates human error, improving positioning stability to over 99.9%, forming a closed-loop technical solution of "measurement-positioning-interlocking-automatic confirmation".

Description

Technical Field

[0001] This invention relates to the field of control technology for steel metallurgical refining production equipment, specifically to a laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in the refining area. Background Technology

[0002] In the refining process of steel enterprises, the precise starting and stopping of ladle cars and the safe hoisting of molten steel ladles are crucial for ensuring production continuity and the safety of personnel and equipment. Currently, the industry commonly uses the following technical solutions, which have significant drawbacks:

[0003] Ladle car travel control: It mainly relies on a combination of mechanical limit switches. Each ladle car needs to be equipped with 10-15 limit switches. There are problems such as rapid spare parts wear and tear and the need for frequent manual adjustments. Moreover, the mechanical structure is prone to failure in the high temperature and dust refining environment, resulting in high maintenance costs and a large workload.

[0004] Steel ladle hoisting and positioning: mainly relies on visual auxiliary equipment (such as cameras) for reference, without automatic interlocking function, and completely depends on the operator to manually confirm the positioning result, which poses a risk of misoperation and poor positioning stability under complex working conditions;

[0005] Limited technical versatility: Existing laser ranging technology is only used in general steel production and has not formed a complete technical solution for the specific scenarios of steel ladle truck and molten steel ladle hoisting in the refining area, so it cannot be directly implemented to solve actual production pain points.

[0006] The aforementioned problems result in low production efficiency, significant safety hazards, and high overall costs in the refining process. There is an urgent need for a technical solution that combines high precision, high stability, and automated interlocking functions to address these common pain points in the industry. Summary of the Invention

[0007] To address the aforementioned problems, the purpose of this invention is to provide a laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in refining areas.

[0008] A laser-based precision measurement and positioning system for hoisting ladle cars and molten steel ladles in refining areas includes:

[0009] The laser measurement module is used to collect displacement data of the ladle car;

[0010] The laser ranging unit is used to collect the relative distance data between the molten steel ladle and the target position during the hoisting process;

[0011] The interlocking control module automatically triggers the action interlock of the ladle car and molten steel ladle equipment when the displacement data and relative distance data of the ladle car are within the set threshold range.

[0012] The automated confirmation module automatically completes the positioning of the ladle car and molten steel ladle equipment when the displacement data and relative distance data of the ladle car meet the set conditions.

[0013] Preferably, the laser measurement module is mounted on a fixed bracket on the side of the ladle car track.

[0014] Preferably, the laser ranging unit is mounted on the crossbeam of the steel ladle hoisting trolley.

[0015] Preferably, the laser rangefinder is model SICK DME5000-113.

[0016] Preferably, the laser ranging unit is a Keyence IL-300.

[0017] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0018] This invention relates to a laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in refining areas. Compared with existing technologies, this invention replaces 12 ordinary mechanical limit switches with a single laser rangefinder, reducing the number of spare parts by more than 90%, and the laser equipment does not require frequent inspection and debugging, reducing maintenance workload by 30%. It breaks through the limitations of traditional vision-assisted positioning, adding automated interlocking and multi-dimensional confirmation functions, technically eliminating human error and improving positioning stability to over 99.9%. Focusing on specific scenarios in refining areas, it forms a closed-loop technical solution of "measurement-positioning-interlocking-automatic confirmation," rather than the general application of laser technology, making it suitable for complex environments with high temperatures and dust, and more practical.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A block diagram of a laser precision measurement and positioning system for hoisting steel ladle cars and molten steel ladles in the refining area, provided by the present invention. Detailed Implementation

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 invention 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 invention.

[0023] 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Please see Figure 1 A laser precision measurement and positioning system for hoisting steel ladle cars and molten steel ladles in refining areas, comprising:

[0026] The laser measurement module is used to collect displacement data of the ladle car;

[0027] The laser ranging unit is used to collect the relative distance data between the molten steel ladle and the target position during the hoisting process;

[0028] The interlocking control module automatically triggers the action interlock of the ladle car and molten steel ladle equipment when the displacement data and relative distance data of the ladle car are within the set threshold range.

[0029] The automated confirmation module automatically completes the positioning of the ladle car and molten steel ladle equipment when the displacement data and relative distance data of the ladle car meet the set conditions.

[0030] The laser precision measurement and positioning system of the present invention mainly consists of four parts: a laser measurement module, a data processing module, an interlocking control module, and an automated verification module. The specific structure and workflow are as follows:

[0031] Laser measurement module: A single high-precision laser rangefinder (range 0-50m, accuracy ±1cm) is installed on the side fixed bracket of the ladle car track in the refining area to collect the ladle car displacement data in real time; at the same time, an auxiliary laser rangefinder unit is added to the crossbeam of the steel ladle hoisting trolley to collect the relative distance data between the steel ladle and the target position during the hoisting process;

[0032] Data processing module: Transmits displacement and distance data collected by the laser measurement module to the PLC control system via industrial Ethernet. The system has a built-in data filtering algorithm to remove abnormal data caused by high temperature and dust interference, and outputs accurate position signals.

[0033] Interlocking control module: preset steel ladle car start and stop thresholds (e.g., decelerate when 1m away from the target position and stop when 0.1m away) and steel ladle hoisting positioning thresholds (e.g., hoisting is allowed when the alignment deviation is ≤2cm). When the position signal output by the data processing module reaches the threshold, the equipment action interlock is automatically triggered to prohibit operation beyond the safe range.

[0034] Automated confirmation module: Combining laser measurement data with equipment operating status (such as ladle car speed and crane lifting weight) to form multi-dimensional confirmation conditions. When all conditions are met, a positioning completion signal is automatically generated without manual intervention, directly connecting to subsequent production processes.

[0035] Laser rangefinder installation: Fix brackets on both sides of the ladle car track in the refining area, 1.5m from the center line and 2m above the track, and install laser rangefinders (model: SICK DME5000-113). Adjust the measurement angle to ensure that the laser beam is accurately projected onto the reflector on the side of the ladle car; below the overhead crane beam, corresponding to the position of the ladle lifting lug, install an auxiliary laser rangefinder unit (model: Keyence IL-300).

[0036] Parameter debugging: Using PLC programming software (Siemens TIA Portal), set the deceleration threshold (speed drops to 0.5m / s when 1m from the target position) and the stopping threshold (speed is 0 when 0.1m from the target position); the steel ladle hoisting alignment deviation threshold (≤2cm); and set the data filtering parameters (filtering frequency 50Hz) to remove interference data.

[0037] This invention replaces 12 ordinary mechanical limit switches with a single laser rangefinder, reducing the number of spare parts by more than 90%, and eliminating the need for frequent inspection and debugging of the laser equipment, thus reducing maintenance workload by 30%. It breaks through the limitations of traditional vision-assisted positioning by adding automated interlocking and multi-dimensional confirmation functions, technically eliminating human error and improving positioning stability to over 99.9%. Focusing on specific scenarios in refining areas, it forms a closed-loop technical solution of "measurement-positioning-interlocking-automatic confirmation" rather than the general application of laser technology, making it suitable for complex environments with high temperatures and dust, and thus more practical.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in a refining area, characterized in that, include: The laser measurement module is used to collect displacement data of the ladle car; The laser ranging unit is used to collect the relative distance data between the molten steel ladle and the target position during the hoisting process; The interlocking control module automatically triggers the action interlock of the ladle car and molten steel ladle equipment when the displacement data and relative distance data of the ladle car are within the set threshold range. The automated confirmation module automatically completes the positioning of the ladle car and molten steel ladle equipment when the displacement data and relative distance data of the ladle car meet the set conditions.

2. The laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in the refining area according to claim 1, characterized in that, The laser measurement module is installed on a fixed bracket on the side of the ladle car track.

3. The laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in the refining area according to claim 2, characterized in that, The laser ranging unit is mounted on the crossbeam of the steel ladle hoisting gantry crane.

4. The laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in the refining area according to claim 3, characterized in that, The laser rangefinder is model SICK DME5000-113.

5. The laser precision measurement and positioning system for hoisting ladle cars and molten steel ladles in the refining area according to claim 4, characterized in that, The laser ranging unit is model Keyence IL-300.

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