阅读说明：本技术 一种型钢粗轧设备及其控制方法 (Profile steel rough rolling equipment and control method thereof ) 是由 张克鹏 吴鹏 丁梦怡 刘文涛 杜伟 宋希光 王峰 魏成勇 于成龙 刘伟 张炎 于 2018-06-29 设计创作，主要内容包括：本申请提供了一种型钢粗轧设备及其控制方法,涉及自动控制技术领域,用于解决在任意角度翻钢的过程中,工作效率低、造成资源浪费的问题。该设备包括PLC控制器和与PLC控制器连接的粗轧机、两个渐进辊道、两个夹持式翻钢机和两个工作辊道,两个渐进辊道、两个夹持式翻钢机和两个工作辊道分别沿轧制方向对称设置于粗轧机的两侧,夹持式翻钢机位于渐进辊道和工作辊道之间；渐进辊道上、夹持式翻钢机和粗轧机上均设有钢坯检测器；夹持式翻钢机设有横移装置、夹送辊、提升装置和旋转装置,横移装置、提升装置和旋转装置上均设有位置传感器；工作辊道的两侧均设有一个推床,其中位于传动侧的推床前方设有翻钢钩。(The application provides a section steel rough rolling device and a control method thereof, relates to the technical field of automatic control, and is used for solving the problems of low working efficiency and resource waste in the process of turning steel at any angle. The equipment comprises a PLC controller, a roughing mill connected with the PLC controller, two progressive roller ways, two clamping type tilting gears and two working roller ways, wherein the two progressive roller ways, the two clamping type tilting gears and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively; a billet detector is arranged on the progressive roller way, the clamping type tilting gear and the roughing mill; the clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, wherein position sensors are arranged on the transverse moving device, the lifting device and the rotating device; both sides of the working roller way are provided with a pusher, wherein a steel turning hook is arranged in front of the pusher on the transmission side.)

1. The profile steel rough rolling equipment is characterized by comprising a PLC (programmable logic controller), a rough rolling mill connected with the PLC, two progressive roller ways, two clamping type tilting gears and two working roller ways, wherein,

the two progressive roller ways, the two clamping type tillers and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively, and the clamping type tillers are positioned between the progressive roller ways and the working roller ways; a billet detector is arranged on the progressive roller way, the clamping type tilting gear and the roughing mill;

the clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, wherein position sensors are arranged on the transverse moving device, the lifting device and the rotating device;

and both sides of the working roller way are provided with a push bed, wherein a steel turning hook is arranged in front of the push bed positioned on the transmission side.

2. The rough rolling equipment of section steel according to claim 1, wherein the rough rolling mill is a two-roll reciprocating rough rolling mill, and a plurality of pass spaces are provided between two rolls of the rough rolling mill.

3. The rough rolling equipment of section steel according to claim 1, wherein the billet detector is a hot metal detection sensor.

4. A control method of a rough rolling facility of section steel according to any one of claims 1 to 3, wherein in each rolling pass, the PLC controller controls the rough rolling facility of section steel to perform the following operations:

s1, controlling the pass of the push bench according to the rough rolling procedure of the section steel;

s2, judging whether the clamping type tilting gear is in a steel taking state, if so, executing the step S3 after tilting; if not, judging whether steel turning is needed according to the rough rolling procedure of the section steel, and if not, directly executing the step S3; if the steel needs to be turned, determining the turning device as a turning hook or a clamping type turning machine according to the turning angle, and executing the step S3 after the turning device finishes the turning operation;

s3, starting the working roller way and the roughing mill to roll the billet;

s4, judging whether a clamping type tilting gear is used in the next pass or not according to the preset rough rolling procedure; if so, controlling the next clamping type tilting gear to take steel;

s5, judging whether the clamping type tilting gear is used in the current pass or not according to the preset rough rolling procedure; if yes, after the steel turning of the current pass is finished and the steel feeding of the pinch rolls is finished, controlling the pinch rolls to loosen and turn over to the initial positions, and then executing step S6; if not, directly executing step S6;

s6, judging whether the clamping type tilting gear is used in the next time or not according to the preset rough rolling procedure, if so, controlling the clamping type tilting gear to move to a waiting position corresponding to the next time, and if not, moving to the initial position;

s7, when it is detected that the billet has passed through the roughing mill, the present pass is ended.

5. The control method of a section bar rough rolling apparatus according to claim 4, characterized in that before performing the first pass, the method further comprises:

s0, detecting whether the steel turning equipment is at the initial position or not after the billet is detected to enter the progressive roller way, if so, executing the step S1; otherwise, the tilting equipment is controlled to return to the initial position, and then step S1 is executed.

6. The control method of the rough rolling equipment of section steel according to claim 4, wherein in step S2:

when the turning device is a turning hook, controlling the progressive roller way to stop;

if the turning angle is 90 °, executing the following step S201:

s201, controlling the H/2 distance of the operation side pusher to be opened, controlling the steel turning hook to rotate, controlling the transmission side pusher provided with the steel turning hook to move along the steel turning direction, turning the steel billet, and aligning the pusher with the pass hole pattern;

if the tilting angle is 180 °, step S201 is performed twice.

7. The method of controlling a rough rolling facility of section steel according to claim 4, wherein, in step S2,

when the turn-over device is a clamping turn-over machine, the progressive roller way is controlled to stop, the following step S202 is executed,

s202, controlling the distance of H/2 for opening the push beds on the two sides, controlling the clamping type tilting machine to move to a steel taking position, ascending to a tilting height, controlling the pinch roll to clamp the steel taking position, overturning to a tilting angle, then descending to a roller way plane, and centering the push beds again.

8. The control method of the rough rolling equipment of section steel according to claim 4, characterized in that after step S7, the method further comprises:

s8, judging whether the current pass is the last pass according to the processing procedure, if so, ending the procedure; if not, steps S1-S8 are repeated.

9. The control method of the section steel roughing apparatus according to claim 4, characterized in that whether said steel slab reaches a specified position or leaves a specified position is detected by a hot metal detector;

if the hot metal detector detects a rising pulse signal, judging that the steel billet reaches a specified position;

and if the hot metal detector detects the falling pulse signal, judging that the steel billet leaves the designated position.

Technical Field

The application relates to the technical field of automatic control, in particular to a section steel rough rolling device and a control method thereof.

Background

The section steel is a strip steel with certain section shape and size, and comprises 7 types of steel, such as H-shaped steel, large angle steel, joist steel, J160a, J160b, steel sheet piles, track plates and the like. The section steel has a special cross-sectional shape, so that a common billet needs to be rolled in the preparation process to obtain the section steel with a specific shape.

In the rough rolling of the steel section, a steel billet is often subjected to deformation rolling in multiple passes to obtain a specific cross section. Depending on the rolling process, certain passes may require the billet to be inverted during the back and forth rolling of the billet. The overturning angle of the box parison and the rectangular parison is usually 90 degrees or 180 degrees, and the overturning requirement can be met by overturning the steel through the overturning hook. For some special section steels, such as track shoes and the like, because inclined pass needs to be used in the rolling process, the turning angle of the special section steels can be any angle between 0 and 180 degrees, and a clamping type steel turning machine needs to be used for turning.

The tilting hook has the characteristics of simple structure and convenient control, so that in the rough rolling process, when only 90-degree or 180-degree tilting is carried out, the tilting hook is arranged on two sides of the rough rolling mill for tilting. When the rough rolling process has the turning requirement of a special angle, the turning hook is replaced by a clamping type turning machine so as to realize the turning of any angle. However, the structure and control of the clamping type tilting gear are complex relative to the tilting hook, and in the tilting process at any angle, if the tilting angle is 90 ° or 180 °, the working efficiency of the clamping type tilting gear is low, and resource waste is caused.

Disclosure of Invention

The application provides a section steel rough rolling device and a control method thereof, which solve the problems of low working efficiency and resource waste in the process of turning steel at any angle.

The first aspect of the application provides a section steel rough rolling device, which comprises a PLC controller, a rough rolling mill connected with the PLC controller, two progressive roller ways, two clamping type steel tillers and two working roller ways, wherein,

the two progressive roller ways, the two clamping type tillers and the two working roller ways are symmetrically arranged on two sides of the roughing mill along the rolling direction respectively, and the clamping type tillers are positioned between the progressive roller ways and the working roller ways; a billet detector is arranged on the progressive roller way, the clamping type tilting gear and the roughing mill;

the clamping type tilting gear is provided with a transverse moving device, a pinch roll, a lifting device and a rotating device, wherein position sensors are arranged on the transverse moving device, the lifting device and the rotating device;

and both sides of the working roller way are provided with a push bed, wherein a steel turning hook is arranged in front of the push bed positioned on the transmission side.

Optionally, the roughing mill is a two-roll reciprocating roughing mill, and a plurality of pass spaces are provided between two rolls of the roughing mill.

Optionally, the billet detector is a hot metal detection transmitter.

A second aspect of the present application provides a method for controlling the rough rolling apparatus of section steel provided in the first aspect, in each rolling pass, the PLC controller controlling the rough rolling apparatus of section steel to perform the operations of:

s1, controlling the pass of the push bench according to the rough rolling procedure of the section steel;

s2, judging whether the clamping type tilting gear is in a steel taking state, if so, executing the step S3 after tilting; if not, judging whether steel turning is needed according to the rough rolling procedure of the section steel, and if not, directly executing the step S3; if the steel needs to be turned, determining the turning device as a turning hook or a clamping type turning machine according to the turning angle, and executing the step S3 after the turning device finishes the turning operation;

s3, starting the working roller way and the roughing mill to roll the billet;

s4, judging whether a clamping type tilting gear is used in the next pass or not according to the preset rough rolling procedure; if so, controlling the next clamping type tilting gear to take steel;

s5, judging whether the clamping type tilting gear is used in the current pass or not according to the preset rough rolling procedure; if yes, after the steel turning of the current pass is finished and the steel feeding of the pinch rolls is finished, controlling the pinch rolls to loosen and turn over to the initial positions, and then executing step S6; if not, directly executing step S6;

s6, judging whether the clamping type tilting gear is used in the next time or not according to the preset rough rolling procedure, if so, controlling the clamping type tilting gear to move to a waiting position corresponding to the next time, and if not, moving to the initial position;

s7, when it is detected that the billet has passed through the roughing mill, the present pass is ended.

Optionally, before performing the first pass, the method further includes:

s0, detecting whether the steel turning equipment is at the initial position or not after the billet is detected to enter the progressive roller way, if so, executing the step S1; otherwise, the tilting equipment is controlled to return to the initial position, and then step S1 is executed.

Optionally, in step S2, when the tilting device is a tilting hook, controlling the progressive roller way to stop;

if the turning angle is 90 °, executing the following step S201:

s201, controlling the H/2 distance of the operation side pusher to be opened, controlling the steel turning hook to rotate, controlling the transmission side pusher provided with the steel turning hook to move along the steel turning direction, turning the steel billet, and aligning the pusher with the pass hole pattern;

if the tilting angle is 180 °, step S201 is performed twice.

Optionally, in step S2, if the turn-over device is a clamping turn-over machine, the progressive roller table is controlled to stop, and step S202 is executed,

s202, controlling the distance of H/2 for opening the push beds on the two sides, controlling the clamping type tilting machine to move to a steel taking position, ascending to a tilting height, controlling the pinch roll to clamp the steel taking position, overturning to a tilting angle, then descending to a roller way plane, and centering the push beds again.

Optionally, after step S7, the method further includes:

s8, judging whether the current pass is the last pass according to the processing procedure, if so, ending the procedure; if not, steps S1-S8 are repeated.

Optionally, in the above method, detecting whether the steel billet reaches the designated position or leaves the designated position by a hot metal detector;

if the hot metal detector detects a rising pulse signal, judging that the steel billet reaches a specified position;

and if the hot metal detector detects the falling pulse signal, judging that the steel billet leaves the designated position.

The technical scheme provided by the application comprises the following beneficial technical effects:

compared with the equipment for realizing the turnover at all angles by independently using the clamping type turnover machine and the control method thereof, the equipment provided by the application combines the turnover hook with the clamping type turnover machine, so that the turnover hook has the advantages of simple structure and convenient control, the turnover operation of 90 degrees and 180 degrees is executed, the flexible and mobile characteristic of the clamping type turnover machine and the capability of realizing the turnover at any angle is utilized, the turnover operation at a special angle is executed, the control process of rough rolling is simplified, and the rolling efficiency is improved.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a section steel rough rolling device provided in an embodiment of the present application.

Fig. 2 is a flowchart of a control method of the rough rolling equipment for section steel according to the embodiment of the present application.

Description of reference numerals:

1. a PLC controller; 2. a roughing mill; 3. a progressive roller way; 4. a clamping type tilting gear; 5. a working roller way; 6. pushing the bed; 7. and (5) turning over the steel hook.

Detailed Description

In the rough rolling process, the section steel usually needs to be rolled in multiple passes to obtain the section steel with a specific section. And (3) carrying out primary rolling deformation on the section steel, namely obtaining one pass. In the rolling process, generally, the first pass performed in the rolling process is referred to as the first pass, the pass being performed is referred to as the present pass, the next pass of the present pass is referred to as the next pass, and the next pass following the present pass is referred to as the next pass. Based on this, the technical solutions provided in the present application are explained below by the following examples.