Monitoring system for steel billets discharged from furnace

Abstract

The utility model relates to the technical field of heating furnace steel billet control, in particular to a monitoring system for steel billets of a furnace discharging roller way, which comprises a steel billet heating furnace, the steel billet heating furnace comprises a heating furnace body, a furnace discharging opening is arranged on one side of the end portion of the heating furnace body, and a roller way is arranged at the furnace discharging opening in a penetrating mode. The roller way located in the heating furnace body is a discharging cantilever roller way, and the roller way located outside the heating furnace body is a furnace discharging roller way. A plurality of fixed cross beams are arranged in the heating furnace body, a plurality of walking beams are further arranged in the heating furnace body, the fixed cross beams and the walking beams are arranged in a staggered mode, and one ends of the fixed cross beams and one ends of the walking beams are located on one side of the discharging cantilever roller way. According to the utility model, the position and the posture of the steel billet can be accurately identified through video monitoring, an abnormal signal can be timely given out and error adjustment can be carried out when abnormity occurs, and real-time control is carried out by adopting video monitoring, so that the problem of steel billet rear-end collision is solved, personnel operation is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnace steel billet control, in particular to a monitoring system for steel billets on a furnace-outlet roller table. Background Art

[0002] A walking-beam heating furnace is a continuous heating furnace that moves the billets forward step by step by the rising, advancing, descending, and retreating movements of the furnace bottom or water-cooled metal beams. A walking-beam heating furnace is also a continuous heating furnace. It relies on a special stepping mechanism to move along a certain trajectory (usually a rectangular trajectory) to move the steel in the furnace forward step by step, so it is called a walking-beam heating furnace. Since the 1970s, due to the large-scale rolling mills, walking-beam furnaces have been widely used. Compared with push-steel furnaces, its advantages are: flexible material transportation, and all the charges can be discharged from the furnace when necessary; the billets are spread out at intervals on the furnace bottom or beams, so they can be heated more quickly and evenly; the arching and sticking problems of push-steel furnaces are completely eliminated, so the length of the furnace is not limited by these factors.

[0003] The walking-beam heating furnace has a loading roller and a discharging roller. The loading roller feeds the steel into the heating furnace for heating, and the walking beam feeds it to the discharge port, where the discharge roller discharges the steel. At present, the steel tapping in the workshop control room mainly relies on two operators manually operating the steel tapping button. There are many manual operations in the normal production process, and the risk of misoperation is high. Improper handling may lead to the rear-end collision of steel billets, causing production delays, increasing the workload of personnel, and affecting the efficiency of steel tapping and production rhythm.

[0004] Chinese patent CN103019150A discloses an automatic steel-tapping monitoring system for a walking beam heating furnace, including an industrial computer, a PLC controller, a data acquisition module, a walking beam control module and a three-phase asynchronous motor control module, wherein the industrial computer transmits a delay interval signal to the PLC controller and receives a real-time monitoring signal from the PLC controller; the PLC controller receives and processes the real-time information transmitted by the data collector, and sends an enable control signal to the three-phase asynchronous motor control module and the walking beam control module; the walking beam control module transmits a data signal to the data acquisition module. At the same time, the invention also provides an automatic steel-tapping control method for a walking beam heating furnace. The invention makes up for the shortcomings of manual operation in traditional control, has powerful computing functions, high stability, reduces changes in rolling mill processes and rolling speeds, increases output, reduces intermediate products, and improves work efficiency.

[0005] The above patent uses the hot metal detector and displacement sensor in the data acquisition module to realize the real-time positioning of the steel billet, which greatly improves the work efficiency. However, this method uses the metal detector and displacement sensor to only detect the position of the steel billet. The specific position may deviate, and the steel billet out of the heating furnace may not be delivered to the right position, resulting in a rear-end collision. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to propose a monitoring system for steel billets on roller tables, so as to solve the problem in the prior art that steel billets discharged from heating furnaces cannot be delivered into place and rear-end collision occurs, and the problem that the position and posture of the steel billets cannot be accurately identified and abnormal signals cannot be given in time. Video monitoring is used to control the discharge of steel billets, which is highly practical.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A monitoring system for billets on a furnace discharge roller table, comprising a billet heating furnace, wherein the billet heating furnace comprises a heating furnace body, a furnace discharge port is arranged on one side of the end of the heating furnace body, a roller table is passed through the furnace discharge port, the roller table located inside the heating furnace body is a discharge cantilever roller table, the roller table located outside the heating furnace body is a discharge roller table, the discharge cantilever roller table is connected to the discharge roller table in a straight line; a fixed crossbeam is arranged inside the heating furnace body, a walking beam is also arranged inside the heating furnace body, a plurality of the fixed crossbeams and the walking beams are arranged alternately, and one end of the fixed crossbeam and the walking beam is located on one side of the discharge cantilever roller table.

[0009] Preferably, it also includes a monitoring unit, which includes a camera, the camera is electrically connected to a controller, the controller is electrically connected to a stepping beam control unit, the controller is electrically connected to a furnace discharge roller control unit, and the controller is also electrically connected to a discharge cantilever roller control unit.

[0010] Preferably, the camera is located above the furnace exit roller table.

[0011] Preferably, a billet positioning area is provided on the furnace-discharging roller table, and a signal detection line is provided in the billet positioning area.

[0012] Preferably, the discharging cantilever roller conveyor and the furnace discharging roller conveyor both have multiple roller shafts.

[0013] Preferably, the controller is also electrically connected to an alarm.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model utilizes video monitoring to carry out the position positioning and identification of the steel billet. When the steel billet is located in the steel billet positioning area and the tail portion crosses the signal detection line, the next steel billet can be unloaded. When it is detected that the tail portion of the steel billet has not passed the signal detection line, the stepping beam is stopped to prevent the subsequent steel billets from being unloaded on the cantilever roller table. Manual intervention is performed and the next action is performed after adjustment. The video monitoring can accurately identify the position and posture of the steel billet. When an abnormality occurs, an abnormal signal is given in time to adjust the error. The real-time control using video monitoring solves the problem of steel billet rear-end collision, reduces the work of personnel and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a billet heating furnace for a monitoring system of billets on a roller table proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of a control unit of a monitoring system for billet on a furnace roller table proposed by the utility model;

[0018] In the figure: Among them: 1. Heating furnace body; 2. Discharge port; 3. Discharge cantilever roller; 4. Fixed crossbeam; 5. Walking beam; 6. Camera; 7. Discharge roller; 8. Controller; 9. Walking beam control unit; 10. Discharge roller control unit; 11. Discharge cantilever roller control unit; 12. Alarm; 13. Billet positioning area; 14. Signal detection line; 15. Billet. DETAILED DESCRIPTION

[0019] 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 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.

[0020] Example

[0021] A monitoring system for billet on a furnace discharge roller table comprises a billet heating furnace, wherein the billet heating furnace comprises a heating furnace body 1, a furnace discharge port 2 is arranged on one side of the end of the heating furnace body 1, a roller table is passed through the furnace discharge port 2, the roller table located inside the heating furnace body 1 is a discharge cantilever roller table 3, the roller table located outside the heating furnace body 1 is a discharge roller table 7, the discharge cantilever roller table 3 is connected to the discharge roller table 7 in a straight line; a fixed beam 4 is arranged inside the heating furnace body 1, and a walking beam 5 is also arranged inside the heating furnace body 1, a plurality of the fixed beams 4 and the walking beams 5 are staggered, and one end of the fixed beam 4 and the walking beam 5 is located on one side of the discharge cantilever roller table 3.

[0022] The fixed crossbeam 4 in the heating furnace body 1 is used to place the heated steel billets, and the walking beam 5 moves forward synchronously to send the steel billets step by step to the discharge cantilever roller 3. The steel billets arranged near the discharge cantilever roller 3 are first sent to the discharge cantilever roller 3, and the discharge cantilever roller 3 rotates to send the steel billets out of the furnace to the discharge roller 7.

[0023] In this embodiment, a monitoring unit is also included, which includes a camera 6, and the camera 6 is electrically connected to a controller 8, and the controller 8 is electrically connected to a stepping beam control unit 9, and the controller 8 is electrically connected to a furnace discharge roller control unit 10, and the controller 8 is also electrically connected to a discharge cantilever roller control unit 11.

[0024] The camera 6 is used to monitor the image of the discharge roller outside the heating furnace body 1 and transmit it to the controller 8. The controller 8 identifies the position of the steel billet on the discharge roller 7, identifies, detects and analyzes the camera 6 video image, marks the target and trajectory of the abnormal situation in the video image, and performs the next operation according to the identification result. The controller 8 can adopt an industrial computer, which is an existing technology, such as the existing Advantech 510 industrial computer. The controller 8 can realize the operation control of the walking beam 5, the discharge roller control unit 10 and the discharge cantilever roller control unit 11 by controlling the walking beam control unit 9, the discharge roller control unit 10 and the discharge cantilever roller control unit 11. The control unit is connected to a power supply to power it.

[0025] In this embodiment, the camera 6 is located above the side of the furnace discharge roller 7 .

[0026] In this embodiment, a billet positioning area 13 is provided on the furnace-discharging roller table 7 , and a signal detection line 14 is provided in the billet positioning area 13 .

[0027] The camera 6 monitors the discharge roller 7 outside the heating furnace body 1. A billet positioning area 13 is provided on the discharge roller 7. The billet positioning area 13 is provided with a signal detection line 14. The controller 8 identifies the billet positioning area 13, and can identify the specific position of the billet and whether the tail of the billet reaches the signal detection line 14.

[0028] In this embodiment, the discharge cantilever roller conveyor 3 and the furnace discharge roller conveyor 7 both have multiple roller shafts.

[0029] The rolling of multiple rollers realizes the operation of the discharge cantilever roller and the furnace discharge roller 7. The rolling direction of the rollers is the forward direction of the billet, and the rolling of the rollers drives the billet to move.

[0030] In this embodiment, the controller 8 is also electrically connected to an alarm 12 .

[0031] The alarm is used to remind when the steel billet fails to pass the signal detection line 14 and needs manual position adjustment, as well as when the equipment fails.

[0032] The working principle of the monitoring system for billet on the roller table of the utility model is as follows:

[0033] When steel is discharged, the camera 6 takes a picture of the discharge roller 7 outside the heating furnace body 1, and the controller 8 identifies the camera content of the camera 6, and controls the operation of the identified information result. When it is identified that there is no billet in the billet positioning area 13, the controller 8 sends a command to the stepping beam control unit 9, and the stepping beam 5 moves to move the billet to the discharge cantilever roller 3, and sends the first billet closest to the discharge cantilever roller 3 in the heating furnace body 1 to the discharge cantilever roller 3. When the first billet reaches the discharge cantilever roller 3, the stepping beam 5 stops running, and the controller 8 sends a command to the discharge cantilever roller control unit 11, and the discharge cantilever roller 3 starts to operate. The roller shaft on the discharge cantilever roller 3 rotates, and stops when the first billet is sent to the billet positioning area 13 on the discharge roller 7 at high speed. The control When the device 8 detects that the first steel billet has arrived at the steel billet positioning area 13 and the tail has passed the signal detection line 14, the discharge roller control unit 10 is controlled to allow the discharge roller 7 to send the first steel billet out of the steel billet positioning area 13, and at the same time, the stepping beam 5 starts to convey the second steel billet to the discharge cantilever roller 3. When the second steel billet arrives on the discharge cantilever roller 3, the discharge roller 7 stops running, the discharge cantilever roller 3 rolls, and the second steel billet is sent to the steel billet positioning area 13. If the second steel billet arrives in the steel billet positioning area 13, the previous steps are continued. If the second steel billet reaches the steel billet positioning area 13, the controller 8 recognizes that the steel billet has not passed the signal detection line 14, then an instruction is issued to stop the operation of the stepping beam 5, the discharge cantilever roller 3 and the discharge roller 7, and an alarm is sounded to remind the staff to make adjustments.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A monitoring system for billet on a roller table, comprising a billet heating furnace, wherein the billet heating furnace comprises a heating furnace body (1), characterized in that: A furnace outlet (2) is provided at one side of the end of the heating furnace body (1), and a roller conveyor is provided through the furnace outlet (2). The roller conveyor located inside the heating furnace body (1) is a discharge cantilever roller conveyor (3), and the roller conveyor located outside the heating furnace body (1) is a discharge roller conveyor (7). The discharge cantilever roller conveyor (3) and the discharge roller conveyor (7) are connected in a straight line. A fixed crossbeam (4) is provided inside the heating furnace body (1), and a walking beam (5) is also provided inside the heating furnace body (1). A plurality of the fixed crossbeams (4) and the walking beams (5) are arranged in a staggered manner, and one end of the fixed crossbeam (4) and the walking beam (5) is located on one side of the discharge cantilever roller conveyor (3).

2. A monitoring system for billet on a roller table according to claim 1, characterized in that: The device also includes a monitoring unit, the monitoring unit including a camera (6), the camera (6) being electrically connected to a controller (8), the controller (8) being electrically connected to a stepping beam control unit (9), the controller (8) being electrically connected to a furnace discharge roller control unit (10), and the controller (8) being electrically connected to a discharge cantilever roller control unit (11).

3. A monitoring system for billet on a roller table according to claim 2, characterized in that: The camera (6) is located above the side of the furnace exit roller table (7).

4. A monitoring system for billet on a roller table according to claim 2, characterized in that: A billet positioning area (13) is provided on the furnace discharge roller (7), and a signal detection line (14) is provided in the billet positioning area (13).

5. The monitoring system for billet on a roller table according to claim 1, characterized in that: The discharge cantilever roller conveyor (3) and the furnace discharge roller conveyor (7) both have multiple roller shafts.

6. A monitoring system for billet on a roller table according to claim 2, characterized in that: The controller (8) is also electrically connected to an alarm (12).

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