CN217411933U

CN217411933U - Position detection system for loop swing arm door

Info

Publication number: CN217411933U
Application number: CN202220954292.2U
Authority: CN
Inventors: 李志红; 郭凯; 张飞飞; 黄登祥; 孙全龙; 周润军
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-09-13
Anticipated expiration: 2032-04-24

Abstract

The utility model provides a loop swing arm door position detecting system, include: the transmission side rotating upright post is provided with a first stop iron and a second stop iron; the working side rotating upright post is provided with a third stop iron and a fourth stop iron; the winch motor is respectively connected with the transmission side rotating upright post and the working side rotating upright post and is used for driving the swing arm door to be opened or closed; the transmission side proximity switch is arranged on one side of the transmission side rotating upright column and used for detecting the positions of the first stop iron and the second stop iron and judging whether the state of the transmission side swing arm door is opened or closed according to the positions of the stop irons; the working side proximity switch is arranged on one side of the working side rotating stand column and used for detecting the positions of the third stop iron and the fourth stop iron and judging whether the state of the working side swing arm door is opened or closed according to the positions of the stop irons. The utility model discloses only through setting up 2 proximity switches, just can accomplish the detection to the swing arm door position, not only practice thrift the cost, can also make proximity switch trouble or the probability of false detection reduce half.

Description

Loop swing arm door position detection system

Technical Field

The utility model relates to a loop swing arm door technical field especially relates to a loop swing arm door position detecting system.

Background

The loop is one of important devices for ensuring the continuous production of a cold rolling production line, and the continuous pickling and acid rolling production line mainly adopts a horizontal loop. The horizontal loop consists of a loop vehicle, a strip steel bracket, a loop driving system, a track and the like. The loop driving system drives the lower loop vehicle to do linear motion along the track, and the functions of filling and releasing the loop and the like are completed. The main function of the loop is to ensure the continuous production of the production line and realize the highest production efficiency, the loop is generally arranged between the pickling inlet section and the process section, and when two coils of steel with different inlets are welded, the loop is released to ensure the normal operation of the subsequent pickling process. When the process section disc shear changes specifications and changes the shear blade, the loop can be used for filling the loop and can also realize the normal operation of the inlet section. The loop can be divided into a swinging door type bracket loop and a movable bracket trolley loop according to different support strip steel bracket forms, and is divided into a winch type driving loop and a friction wheel type driving loop according to different driving systems, however, the existing winch type swinging door type bracket loop is 22 pairs of swinging arm doors, and the distance between every two adjacent swinging arm doors is 7.8 meters. Each pair of swing arm doors consists of a stand column bracket at the working side and the transmission side respectively. However, the conventional winch-swing door type carrier loop has the following two problems. Firstly, because the loop trolley dynamically runs on the track all the time, when the loop is filled, the swing arm doors need to be closed, the bracket supports strip steel, when the loop is placed, the swing arm doors need to be opened, therefore, the loop trolley is controlled to determine the opening and closing states of the swing arm doors on two sides by utilizing 4 position proximity switches arranged at the bottom ends of the stand columns on two sides of the swing arm doors, the actual position of the loop trolley is calculated through the code disc value of the hoisting motor, and finally, whether the loop trolley normally runs is judged according to the opening and closing state signals of the swing arm doors and the relative position of the code discs of the hoisting motor, so that the stop of the loop trolley can be caused by one fault or false detection of 8 proximity switches used for judging the opening and closing state signals of the swing arm doors on site, and the production rhythm is influenced. Secondly, because there are 4 times of fixed repairs each month, the loop dolly receives belted steel tension to remove after the fixed repair, and the loop zero position can lose like this, consequently need carry out artifical calibration to the loop position when the lifting line, and carry out artifical calibration in-process, lead to easily that the loop position marks and produce the deviation, and then lead to belted steel tracking deviation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims at providing a position detection system for a loop swing arm door.

In order to achieve the above object, the utility model provides a following scheme:

the utility model relates to a loop swing arm door position detecting system, include:

the transmission side rotating upright column is provided with a first stop iron and a second stop iron, the included angle formed by the first stop iron and the second stop iron is 90 degrees, and the first stop iron and the second stop iron are welded with the transmission side swing arm door;

the working side rotating upright post is provided with a third stop iron and a fourth stop iron, the included angle formed by the third stop iron and the fourth stop iron is 90 degrees, and the third stop iron and the fourth stop iron are both welded with the working side swing arm door;

the hoisting motor is respectively connected with the transmission side rotating upright post and the working side rotating upright post and is used for driving the swing arm door to be opened or closed;

the transmission side access switch is arranged on one side of the transmission side rotating upright column and used for detecting the positions of the first stop iron and the second stop iron and judging whether the state of the transmission side swing arm door is opened or closed according to the positions of the stop irons;

the working side proximity switch is arranged on one side of the working side rotating stand column and used for detecting the positions of the third stop iron and the fourth stop iron and judging whether the state of the working side swing arm door is opened or closed according to the positions of the stop irons.

According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:

the utility model provides a loop swing arm door position detecting system, include: the transmission side rotating upright post is provided with a first stop iron and a second stop iron; the working side rotating upright post is provided with a third stop iron and a fourth stop iron; the hoisting motor is respectively connected with the transmission side rotating upright post and the working side rotating upright post and is used for driving the swing arm door to be opened or closed; the transmission side proximity switch is arranged on one side of the transmission side rotating upright column and used for detecting the positions of the first stop iron and the second stop iron and judging whether the state of the transmission side swing arm door is opened or closed according to the positions of the stop irons; the working side proximity switch is arranged on one side of the working side rotating stand column and used for detecting the positions of the third stop iron and the fourth stop iron and judging whether the state of the working side swing arm door is opened or closed according to the positions of the stop irons. The utility model discloses only through setting up 2 proximity switch, just can accomplish the detection to the swing arm door position, not only practice thrift the cost, can also make proximity switch trouble or misdetection's probability reduce half.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is the utility model provides an embodiment's loop swing arm door position detecting system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, the inclusion of a list of steps, processes, methods, etc. is not limited to only those steps recited, but may alternatively include additional steps not recited, or may alternatively include additional steps inherent to such processes, methods, articles, or devices.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, a system for detecting a position of a swing arm door of a loop includes: the device comprises a transmission side rotating upright post, a working side rotating upright post, a hoisting motor, a transmission side access switch and a working side access switch.

The transmission side rotating upright post is provided with a first stop iron and a second stop iron, the included angle formed by the first stop iron and the second stop iron is 90 degrees, and the first stop iron and the second stop iron are both welded with the transmission side swing arm door; the working side rotating upright post is provided with a third stop iron and a fourth stop iron, the included angle formed by the third stop iron and the fourth stop iron is 90 degrees, and the third stop iron and the fourth stop iron are both welded with the working side swing arm door; the hoisting motor is respectively connected with the transmission side rotating upright post and the working side rotating upright post and is used for driving the swing arm door to be opened or closed; the transmission side access switch is arranged on one side of the transmission side rotating upright column and used for detecting the positions of the first stop iron and the second stop iron and judging whether the state of the transmission side swing arm door is opened or closed according to the positions of the stop irons; the working side proximity switch is arranged on one side of the working side rotating stand column and used for detecting the positions of the third stop iron and the fourth stop iron and judging whether the state of the working side swing arm door is opened or closed according to the positions of the stop irons. Before transformation, a group of swing arm doors (a working side swing arm door and a transmission side swing arm door) are provided with 4 proximity switches and 2 stop irons, and the problem of false detection is caused by excessive proximity switches used by a loop swing arm door control system before transformation. Therefore the utility model discloses change into now that swing arm door stand bottom is last to increase a proximity switch signal detection stop iron, make new stop iron and former welding stop iron be 90 degrees angles, realize two stop iron single switch position detection.

The utility model also provides a method is marked zero automatically to the loop, include:

acquiring a loop position corresponding to the time when the approaching switch signal is triggered at a preset loop speed;

inputting a preset loop speed and a corresponding loop position into an FG (FG) segmented proportional function;

and triggering loop position zero marking correction by utilizing a proximity switch signal positive pulse and a loop charging direction signal in a zero marking program.

This process is further described below:

the 9 th swing arm door is tested and confirmed to act most frequently by field and process technicians, so that the existing 9 th swing arm door position judgment proximity switch is used for replacing an original design zero marking proximity switch. The utility model discloses open proximity switch detection signal forward pulse that targets in place as the trigger point with No. 9 swing arm door working sides, under filling set speed through the difference of data acquisition software collection record, the loop position that corresponds when the proximity switch signal triggers, as the following table:

and recording the loop speed and the loop position in the data acquisition table data in a FG function in the control program, wherein the FG function is a segmented proportional function in a Hitachi control program, and determining a proportional coefficient (K1, K2... K9) by using the difference between two adjacent positions and the difference between the two adjacent speeds acquired in the field, wherein K1 is (S2-S1)/(V2-V1). Because the acceleration of the inlet section and the process section on two sides of the loop are different and the set upper speed limit is different, the strip speed and the loop trolley position are not single proportional functions, and more accurate loop position dynamic correction can be realized through the segmented proportional functions.

Furthermore, when the actual speed of the trolley is input in the control program, the corresponding proportional coefficient is directly applied to output the corresponding position value. And then, triggering loop position zero assignment correction by utilizing a proximity switch signal positive pulse and a loop charging direction signal in a zero assignment program to realize the automatic zero assignment calibration function of the loop. For example, after overhauling and tension releasing, the actual position of the loop deviates, so that the automatic alarm parking can be realized due to the position deviation overrun after the secondary tension line building. At the moment, an operator can manually switch into a calibration mode through an operation picture, inching and filling the sleeve through a set speed, observing and confirming the position of the sleeve amount of the picture and the indication value of the sleeve amount, triggering an automatic zero marking pulse to realize dynamic zero marking after reaching a No. 9 swing arm door, and then recovering the operation mode, wherein if the operator stops the vehicle to alarm without abnormal conditions during operation, the calibration of the position of the looper is successful. Therefore, the welding seam tracking deviation caused by the problems of manual zero marking and the like after maintenance is avoided, and further subsequent trimming and steel piling accidents or quality accidents of welding seams of rolling mills are caused.

The utility model discloses it detects the stop iron to increase a swing arm door proximity switch signal at every swing arm door stand welding to tear down a proximity switch, can make the probability of proximity switch trouble or misdetection reduce half like this. Furthermore, the utility model discloses a remove the empty cover of former design or the full cover position calibration signal detection, detect through utilizing current No. 9 swing arm door-trip signal, modify the optimization on control procedure and realize automatic demarcation, when increasing the precision, shortened calibration time and artificial field operation's risk.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The method disclosed by the embodiment corresponds to the device disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the device part for description.

The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A loop swing arm door position detection system, comprising:

the device comprises a transmission side rotating upright post, wherein a first stop iron and a second stop iron are arranged on the transmission side rotating upright post, an included angle formed by the first stop iron and the second stop iron is 90 degrees, and the first stop iron and the second stop iron are welded with a transmission side swing arm door;

and the working side proximity switch is arranged on one side of the working side rotating upright column and used for detecting the positions of the third stop iron and the fourth stop iron and judging whether the state of the working side swing arm door is opened or closed according to the position of the stop iron.