System for automatically centering and checking plate blank before entering furnace

Abstract

The utility model discloses a system for automatically centering and checking a plate blank before entering a furnace, which comprises a conveying roller way, a positioning grating is arranged on one side of the conveying roller way, a distance measuring grating corresponding to the positioning grating is arranged on the other side of the conveying roller way, an encoder is arranged at the front end of the distance measuring grating, and the encoder is used for calculating the advancing speed of the roller way in real time; a controller is arranged on the outer side of the conveying roller way, and the positioning grating, the distance measuring grating and the encoder are in signal connection with the input end of the controller. The output end of the controller is provided with an automatic alarm assembly. According to the utility model, the whole process from centering and positioning before the heating furnace enters the furnace to steel billet entering the furnace is confirmed by workers, and manual operation is upgraded to automatic judgment and automatic execution; the efficiency and the accuracy of in-furnace positioning judgment are improved, meanwhile, the error rate of manual naked eye judgment is reduced, and the production efficiency is improved; the automation of the process provides a technical basis for subsequent heating furnace full-process automation, and provides prerequisite conditions for remote centralized control of an operation room.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying rollers, in particular to an automatic centering and checking system before a slab enters a furnace. Background Art

[0002] The production process of medium and thick plates is generally divided into several main processes such as heating, rolling, and shearing. At present, the main type of thick plate heating furnace is the walking beam heating furnace. Before the slab enters the heating furnace, it is necessary to align the slab on the furnace roller. The purpose of alignment is to ensure that the center line of the slab is consistent with the center line of the walking beam before the slab enters the furnace. In order to prevent the steel plate from losing balance and tilting or even falling during the heating and transportation in the heating furnace, the accuracy of alignment directly determines the production efficiency of the heating furnace and the safety of the heating furnace equipment. The alignment system is generally composed of a positioning roller (furnace roller), a roller encoder, and a positioning grating. In actual operation, sometimes the slab slips, the encoder and grating signal are abnormal, which may cause inaccurate alignment. Therefore, after the alignment is completed, the slab alignment and positioning confirmation before entering the furnace is a key process before entering the furnace. In the past production process, this key process was generally determined by manual visual confirmation. After manual confirmation that it meets the standards, the furnace loading operation was manually started. With the gradual advancement of smart manufacturing in the steel industry in recent years, the demand for automation improvement and centralized operation room in the steel industry has become more and more urgent. The demand for the transformation of each production process to less manpower and less manpower is also becoming more and more urgent. Manual visual judgment can no longer meet the actual needs on site. In order to solve the above problems, an automatic centering and verification system for slabs before entering the furnace is first proposed. Summary of the invention

[0003] The utility model aims to solve the above problems and provides an automatic centering and checking system for slabs before they enter a furnace.

[0004] The specific scheme of the utility model is: an automatic centering and checking system for slabs before entering a furnace, comprising a conveyor roller, a positioning grating is provided on one side of the conveyor roller, a distance measuring grating corresponding to the conveyor roller is provided on the other side of the conveyor roller, an encoder is provided at the front end of the distance measuring grating, and the encoder is used to calculate the speed of the roller in real time; a controller is provided on the outer side of the conveyor roller, and the positioning grating, the distance measuring grating and the encoder are respectively connected to the input end signal of the controller; and an automatic alarm component is provided at the output end of the controller for feeding back the detected signal to the controller.

[0005] Furthermore, the automatic alarm component includes a warning light.

[0006] Furthermore, the automatic alarm component includes a buzzer.

[0007] The utility model has the following beneficial effects: the entire process from the centering positioning before the heating furnace enters the furnace to the steel billet entering the furnace is upgraded from worker confirmation and manual operation to automatic judgment and automatic execution; the efficiency and accuracy of the furnace positioning judgment are improved, while the error rate of manual visual judgment is reduced, and production efficiency is improved; the automation of this process provides a technical basis for the subsequent full-process automation of the heating furnace and provides a prerequisite for remote centralized control of the operation room. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structural principle of the utility model;

[0009] In the figure: 1. conveyor roller; 2. positioning grating; 3. distance measuring grating; 4. encoder; 5. controller; 6. warning light; 7. buzzer; 8. heating furnace; 9. stepping beam. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0011] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0012] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model. Example

[0013] Please refer to Figure 1, An automatic centering and checking system for slabs before entering a furnace, comprising a conveyor roller 1, a positioning grating 2 is provided on one side of the conveyor roller 1, a corresponding distance measuring grating 3 is provided on the other side of the conveyor roller 1, an encoder 4 is provided at the front end of the distance measuring grating 3, and the encoder 4 is used to calculate the speed of the roller in real time; a controller 5 is provided on the outer side of the conveyor roller 1, and the positioning grating 2, the distance measuring grating 3, and the encoder 4 are respectively connected to the input end signal of the controller 5; and an automatic alarm component is provided at the output end of the controller 5 for feeding back the detected signal to the controller 5.

[0014] In this embodiment, the automatic alarm component includes a warning light 6.

[0015] In this embodiment, the automatic alarm component includes a buzzer 7.

[0016] The working method of the utility model is as follows: the positioning grating 2 is used to set the starting point for calculating the forward position of the slab after starting the centering, the encoder 4 is used to calculate the forward speed of the roller in real time, and the forward position of the slab is calculated in conjunction with the positioning starting point grating. The distance from the positioning grating 2 to the center line of the stepping beam 9 is L2. If the length of the slab to be centered and put into the furnace is L, then after the tail of the slab leaves the positioning grating 2 and continues to be transported for a distance of L1=(L2-0.5*L), the slab completes automatic positioning and the positioning roller stops running.

[0017] The present invention adds a set of distance measuring grating 3 on the same horizontal line as the positioning grating 2 to facilitate installation, measurement and maintenance. The installation angle of the distance measuring grating 3 ensures that slabs of various specifications and widths can be measured normally, and forms an angle α with the horizontal line of the furnace roller. The angle α can be obtained by measurement after the equipment is installed. When the slab is centered, the distance measuring grating 3 can measure the distance L3 between the grating and the tail of the slab, and finally the positioning deviation value is calculated by the control system as: L3*COSα-L1. If the deviation value is within the allowable range (such as -40mm to +40mm), the furnace loading operation will be automatically started when there is a furnace loading space in the furnace.

[0018] The utility model has the following beneficial effects: the entire process from the centering positioning of the heating furnace 8 before the billet enters the furnace to the confirmation and manual operation of the workers is upgraded to automatic judgment and automatic execution; the efficiency and accuracy of the furnace positioning judgment are improved, while the error rate of manual visual judgment is reduced, and the production efficiency is improved; the automation of this process provides a technical basis for the subsequent full-process automation of the heating furnace 8, and provides a prerequisite for remote centralized control of the operation room.

Claims

1. An automatic centering and checking system for slabs before entering a furnace, comprising a conveying roller, characterized in that: A positioning grating is provided on one side of the conveying roller, and a corresponding ranging grating is provided on the other side of the conveying roller. An encoder is provided at the front end of the ranging grating, and the encoder is used to calculate the forward speed of the roller in real time; a controller is provided on the outside of the conveying roller, and the positioning grating, ranging grating and encoder are respectively connected to the input end signal of the controller; and an automatic alarm component is provided at the output end of the controller for feeding back the detected signal to the controller.

2. The automatic centering and checking system for slab before entering the furnace according to claim 1 is characterized in that: The automatic alarm component includes a warning light.

3. The automatic centering and checking system for slab before entering the furnace according to claim 1 is characterized in that: The automatic alarm component includes a buzzer.

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