A device for detecting axial movement during the rolling process of a roughing mill main motor.

Abstract

This invention provides a device for detecting axial movement during the rolling process of a roughing mill main motor. The device includes a magnetic scale, which is positioned on one side of a resolver. A thrust plate, the main motor, and rolls are sequentially connected to the other side of the resolver. A magnetic ring is fixed to the resolver via a magnetic ring bracket. The magnetic scale is arranged along the axial direction of the thrust plate, with its sensing surface facing the end face of the magnetic ring. The magnetic scale is fixed to the magnetic scale bracket, which is fixed to the ground. The magnetic ring bracket includes a fixing part connected to the resolver and an annular mounting part for mounting the magnetic ring. The central axis of the magnetic ring coincides with the axis of the main motor. This invention, through a non-contact detection device composed of a magnetic scale, magnetic ring, and magnetic ring bracket, achieves real-time and accurate monitoring of the axial movement of the main motor, early warning of faults, extended equipment life, reduced maintenance costs, and improved stability and safety in the production process.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical rolling equipment technology, and in particular to a device for detecting axial movement during the rolling process of a roughing mill main motor. Background Technology

[0002] "Traction" in the main motor of a roughing mill refers to the unexpected displacement of the main motor rotor along its axial direction during hot rolling. This displacement is mainly caused by the superposition of multiple axial forces, with typical sources including: periodic axial forces generated by structural imbalance during high-speed rotation of the universal joint shaft; increased geometric clearances due to wear of key mating surfaces such as windows and liners after long-term service of the mill stand; asymmetrical rolling forces caused by errors in the setting of the reduction system or fluctuations in the thickness of the incoming material; and additional axial forces resulting from out-of-tolerance roundness and taper of the rolls. The combined effect of these factors causes the main motor rotor to be continuously subjected to axial thrust of unpredictable direction and magnitude during operation, resulting in axial traction on the order of millimeters or even larger.

[0003] To prevent cross-flow from exceeding permissible limits, existing hot strip rolling production lines typically install mechanical damping devices on the thrust plate side of the main motor, absorbing some axial impact through disc springs or hydraulic damping. Meanwhile, on-site maintenance teams use dial indicators for manual monitoring: the dial indicator's magnetic base is fixed to the thrust plate casing, with the indicator head pressed against the rotor end face, and on-duty personnel read the pointer's swing during the rolling gap, relying on experience to determine if cross-flow is abnormal. Some steel mills also use feeler gauges or laser rangefinders for supplementary measurements during maintenance cycles, but none of these methods establish a continuous and traceable data recording system.

[0004] Existing anti-crossing and monitoring methods have significant shortcomings: mechanical damping devices lag in responding to sudden large axial forces; once the damping stroke is exhausted, excessive crossing can still cause dry friction between the thrust disc and the rotor end face, leading to serious accidents such as thrust disc overheating and bolt shearing; manual monitoring with dial indicators can only obtain instantaneous readings, lacking historical trend curves and the ability to capture dynamic peaks during high-speed rolling, and it also lacks remote alarm functionality; furthermore, manual reading is greatly affected by environmental and personnel factors, resulting in high data errors, and requires frequent entry of personnel into the high-temperature, high-noise rolling mill area, posing safety hazards. Therefore, there is an urgent need for a real-time, continuous, remote, and traceable crossing detection device to provide early warning and prevent major damage to the main motor. Utility Model Content

[0005] This invention provides a device for detecting rotor movement during the rolling process of a roughing mill main motor, which solves the problem that existing technologies cannot monitor rotor movement of the main motor in real time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A device for detecting kinetic movement during the rolling process of a roughing mill main motor includes a magnetic scale, which is disposed on one side of a resolver, and a thrust plate, a main motor and a rolling roll are sequentially connected to the other side of the resolver. A magnetic ring is fixed to the resolver by a magnetic ring bracket, and the magnetic scale is arranged along the axial direction of the thrust plate, with the sensing surface of the magnetic scale facing the end face of the magnetic ring.

[0007] Furthermore, the magnetic ruler is fixed to a magnetic ruler bracket, and the magnetic ruler bracket is fixed to the ground.

[0008] Furthermore, the magnetic ruler and the magnetic ring are set at the same height.

[0009] Furthermore, the magnetic ring support includes a fixing part connected to the resolver and an annular mounting part for mounting the magnetic ring, wherein the central axis of the magnetic ring coincides with the axis of the main motor.

[0010] Furthermore, the magnetic ring support and magnetic ruler support are made of non-magnetic materials.

[0011] Furthermore, the relative motion direction of the magnetic ring and the magnetic scale is consistent with the axis of the main motor, and the axial displacement range of the magnetic ring does not exceed the measurement range of the magnetic scale.

[0012] Furthermore, the magnetic ruler is connected to the PLC, and the PLC is connected to the PDA.

[0013] The beneficial effects of this utility model are as follows: This invention employs a non-contact detection device composed of a magnetic ruler, magnetic ring, and magnetic ring support, combined with a PLC and PDA for data acquisition and remote monitoring. This solves the technical problems of traditional dial indicator manual monitoring, such as the inability to continuously record data, the inability to conduct real-time remote monitoring, and the difficulty in providing early warnings of equipment failures. It achieves the effects of real-time and accurate monitoring of the axial movement of the main motor, early warning of failures, extension of equipment life, reduction of maintenance costs, and improvement of the stability and safety of the production process. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions of 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the device of this utility model.

[0016] Figure 2 This is a schematic diagram of the roughing mill of this utility model.

[0017] Explanation of icon numbers: 1. Magnetic scale; 2. Analyzer; 3. Thrust plate; 4. Main motor; 5. Roller; 6. Magnetic ring support; 7. Magnetic ring; 8. Magnetic scale support. Detailed Implementation

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] This utility model provides a technical solution: a device for detecting cross-movement during the rolling process of a roughing mill main motor, such as... Figure 1 and Figure 2 As shown, it includes a magnetic ruler 1, which is disposed on one side of the resolver 2, and the other side of the resolver 2 is connected in sequence to a thrust plate 3, a main motor 4 and a roller 5. A magnetic ring 7 is fixed to the resolver 2 via a magnetic ring bracket 6. A magnetic scale 1 is arranged along the axial direction of the thrust plate 3, with its sensing surface facing the end face of the magnetic ring 7. The magnetic scale 1 is fixed to a magnetic scale bracket 8, which is fixed to the ground. The magnetic scale 1 and the magnetic ring 7 are set at the same height. The magnetic ring bracket 6 and the magnetic scale bracket 8 are made of non-magnetic material. The magnetic ring bracket 6 includes a fixing part connected to the resolver 2 and an annular mounting part for mounting the magnetic ring 7. The central axis of the magnetic ring 7 coincides with the axis of the main motor 4. The relative movement direction of the magnetic ring 7 and the magnetic scale 1 is consistent with the axial direction of the main motor 4, and the axial displacement range of the magnetic ring 7 does not exceed the measurement range of the magnetic scale 1. The magnetic scale 1 is connected to a PLC, and the PLC is connected to a PDA.

[0026] Selection of Detection Element: For recording and storing axial displacement data, a magnetic scale is the best choice. Magnetic scales are characterized by high precision and fast response. Their accuracy reaches the micrometer level, and they have an interface for connecting to a PLC, enabling PDA data recording and storage. The high precision of the magnetic scale fully meets the millimeter-level requirements for axial movement.

[0027] On-site installation method of the detection element: There is a resolver at the rear of the motor thrust plate, which moves axially with the thrust plate. Therefore, by measuring the displacement distance of the resolver, the displacement distance of the main motor can be measured. Thus, it was decided to install the magnetic scale at the tail of the main motor.

[0028] Selection of detection circuit and PDA data acquisition: After determining the installation location of the magnetic scale, the magnetic scale control circuit can be laid. The magnetic scale data is connected to the PLC analog input module. After the data is connected to the network, it is acquired by the PDA. The data is displayed on the PDA screen, thus achieving the purpose of intuitive monitoring.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for detecting stringing during roughing main motor rolling, characterized in that, Includes a magnetic ruler (1), which is set on one side of the resolver (2), and the other side of the resolver (2) is connected in sequence to a thrust plate (3), a main motor (4) and a roller (5). A magnetic ring (7) is fixed on the analyzer (2) by a magnetic ring bracket (6), and the magnetic ruler (1) is arranged along the axial direction of the thrust plate (3), with the sensing surface of the magnetic ruler (1) facing the end face of the magnetic ring (7).

2. The device for detection of string motion during roughing main motor rolling process according to claim 1, characterized in that: The magnetic ruler (1) is fixed on the magnetic ruler bracket (8), and the magnetic ruler bracket (8) is fixed on the ground.

3. The device for detection of string motion during roughing main motor rolling process according to claim 1, characterized in that: The magnetic ruler (1) and the magnetic ring (7) are set at the same height.

4. The device for detection of string motion during roughing main motor rolling process according to claim 1, characterized in that: The magnetic ring bracket (6) includes a fixing part connected to the resolver (2) and an annular mounting part for mounting the magnetic ring (7), the central axis of the magnetic ring (7) being coincident with the axis of the main motor (4).

5. The device according to claim 1, characterized in that: The magnetic ring bracket (6) and magnetic ruler bracket (8) are made of non-magnetic materials.

6. The device according to claim 1, characterized in that: The relative motion direction of the magnetic ring (7) and the magnetic ruler (1) is consistent with the axis of the main motor (4), and the axial displacement range of the magnetic ring (7) does not exceed the measurement range of the magnetic ruler (1).

7. The device according to claim 1, characterized in that it comprises: The magnetic ruler (1) is connected to the PLC, and the PLC is connected to the PDA.

Images