CN118180154A - Running state self-diagnosis method for roller changing trolley - Google Patents
Running state self-diagnosis method for roller changing trolley Download PDFInfo
- Publication number
- CN118180154A CN118180154A CN202410310109.9A CN202410310109A CN118180154A CN 118180154 A CN118180154 A CN 118180154A CN 202410310109 A CN202410310109 A CN 202410310109A CN 118180154 A CN118180154 A CN 118180154A
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- detection device
- laser
- changing trolley
- roller changing
- laser detection
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 65
- 238000005096 rolling process Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a roller changing trolley. A self-diagnosis method for the running state of a roller changing trolley adopts a variable frequency motor to drive a roller changing trolley 1, a cable turntable 3 is arranged on the roller changing trolley, an output torque detector is arranged on the variable frequency motor, a cable 5 on the cable turntable 3 is connected with a cable fixing point 4, the roller changing trolley 1 runs on a track 2, a laser emitting device 6 is arranged on the roller changing trolley 1, a first laser detecting device 7 and a second laser detecting device 8 are arranged on two sides of a roller changing channel, the laser emitting device 6 simultaneously emits a laser to two sides of the roller changing channel, and the two lasers are positioned on a straight line and the straight line is perpendicular to the track 2 where the roller changing trolley 1 is positioned.
Description
Technical Field
The invention relates to a roller changing trolley.
Background
When a roll is replaced by a roll changing trolley in the hot rolling process, in a roll changing working state, blocking occurs due to the roll or other reasons, and the roll changing trolley causes damage to a speed reducer and a motor of the roll changing trolley due to sudden increase of the torque of a travelling motor; when the walking position encoder of the roll changing trolley is connected with mechanical equipment by a line or the encoder, the position feedback is wrong, so that the roll changing trolley punches out a walking track; when the roller is out of position or the roller bottom sliding plate is worn, the roller changing trolley can fall off in the running process; the cable reel of the roll changing trolley cannot follow synchronous rotation in the running process of the roll changing trolley due to other reasons, so that the cable is extruded and damaged.
And according to the example sentence calculation, the torque control and torque judgment program under the control of the frequency converter and the grating combined positioning correction program are adopted for positioning, the position deviation judgment of the laser grating is realized, and the abnormal judgment detection and judgment program of the cable turntable is used for preventing the faults, so that the running state self-diagnosis of the roll changing trolley is realized.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: how to realize the self-diagnosis of the running state of the roll changing trolley and to perform the self-repair of the position error, thereby achieving the stable running of the equipment.
The technical scheme adopted by the invention is as follows: the running state self-diagnosis method of the roller changing trolley adopts a variable frequency motor to drive a cable turntable 3 to be arranged on the roller changing trolley 1, an output torque detector to be arranged on the variable frequency motor, a cable 5 on the cable turntable 3 is connected with a cable fixing point 4, the roller changing trolley 1 runs on a track 2, a laser emitting device 6 is arranged on the roller changing trolley 1, a first laser detecting device 7 and a second laser detecting device 8 are arranged on two sides of a roller changing channel, the laser emitting device 6 simultaneously emits laser to two sides of the roller changing channel, and the two lasers are positioned on a straight line and the straight line is perpendicular to the track 2 where the roller changing trolley 1 is positioned; when the torque detector detects that the output torque of the variable frequency motor is not smaller than the set output torque and the first laser detection device 7 and the second laser detection device 8 detect that the roll changing trolley 1 stops in the working process, if the feedback current of the variable frequency motor is 1.5 times or more of the load current within 0.5 ms time, judging the jam of the roll changing trolley, alarming and sending a stop instruction of the roll changing trolley 1; when the roller changing trolley 1 walks to a non-rolling mill end stopping point, the roller changing trolley 1 is stopped, the position of the non-rolling mill end stopping point is set to be Y, the position of the roller changing trolley 1 of the non-rolling mill end stopping point fed back by the first laser detection device 7 and the second laser detection device 8 is X, and if the position of the roller changing trolley 1 of the non-rolling mill end stopping point fed back by the first laser detection device 7 and the second laser detection device 8 is I not less than 5mm, the position of the roller changing trolley 1 of the non-rolling mill end stopping point fed back by the first laser detection device 7 and the second laser detection device 8 is marked as Y; when the positions of the roller changing trolley 1 fed back by the first laser detection device 7 and the second laser detection device 8 are different in the running process of the roller changing trolley, the fact that the roller changing trolley 1 falls down the track 2 is indicated, and immediate stopping is needed; when the cable turntable 3 does not rotate and the roller changing trolley 1 fed back by the first laser detection device 7 and the second laser detection device 8 is in running, the cable turntable 3 is in error or the cable is in error, and the vehicle needs to be stopped immediately.
The first laser detection device 7 and the second laser detection device 8 detect that the roller changing trolley 1 stops, which means that the positions of the laser emitted by the laser emitting device 6 irradiated on the first laser detection device 7 and the second laser detection device 8 are unchanged in the set time.
The first laser detection device 7 is a plurality of laser receiving devices which are arranged at equal intervals along one side of the roller changing channel, the second laser detection device 8 is a plurality of laser receiving devices which are arranged at equal intervals along the other side of the roller changing channel, each laser receiving device of the first laser detection device 7 corresponds to each laser receiving device of the second laser detection device 8 one by one, and each pair of corresponding laser receiving devices is connected with the track 2 which is perpendicular to the nearest distance of the corresponding laser receiving devices.
The first laser detection device 7 and the second laser detection device 8 are both a laser grating sensor.
The beneficial effects of the invention are as follows: the invention adopts advanced technologies such as sensing, intelligent judgment and the like to realize the self-diagnosis of the running state of the roll changing trolley, and self-repair of the position error, realize preventive maintenance and ensure that the equipment is in a healthy state to avoid faults.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
wherein, 1, a roller changing trolley, 2, a track, 3, a cable turntable, 4, a cable fixing point, 5 and a cable, and 6, a laser emission device, 7, a first laser detection device, 8 and a second laser detection device.
Detailed Description
The automatic identification and self-judgment is carried out on the traveling mechanism (the roller changing trolley 1), the turntable mechanism (the cable turntable 3) and the traveling identification accuracy of the main components of the roller changing trolley, so that the stable operation and preventive prompt of equipment and the operation time of winding cables are realized, and the replacement period is determined.
As shown in fig. 1 and 2, a self-diagnosis method for the running state of a roll-changing trolley is provided, wherein a cable turntable 3 is installed on a roll-changing trolley 1 driven by a variable frequency motor, an output torque detector is installed on the variable frequency motor, a cable 5 on the cable turntable 3 is connected to a cable fixing point 4, the roll-changing trolley 1 runs on a track 2, a laser emitting device 6 is installed on the roll-changing trolley 1, a first laser detecting device 7 and a second laser detecting device 8 are installed on two sides of a roll-changing channel, the laser emitting device 6 simultaneously emits a laser to two sides of the roll-changing channel, and the two lasers are positioned on a straight line and the straight line is perpendicular to the track 2 where the roll-changing trolley 1 is located.
Calculating the moment of pushing in and pulling out the roller by the roller changing trolley, detecting the output torque of the frequency converter motor in real time by adopting a moment detector, judging the jam of the roller changing trolley when the moment detector detects that the output torque of the frequency converter motor is not smaller than the set output torque (the calculated moment of pushing in and pulling out the roller by the roller changing trolley), and giving an alarm and giving a stopping instruction to the roller changing trolley 1 if the first laser detection device 7 and the second laser detection device 8 detect that the roller changing trolley 1 stops (lasts for 3 s), wherein the feedback current of the frequency converter motor is larger than or equal to 1.5 times of the load current within 0.5 ms time.
The blocking in the invention refers to that the roller changing trolley for pulling the roller can not move because other equipment is not in place and the roller interferes in the process of pulling the roller out of the rolling mill or pushing the roller into the rolling mill.
When the roller changing trolley 1 walks to a non-rolling mill end stopping point, the roller changing trolley 1 stops, the position of the non-rolling mill end stopping point is set to be Y, the position of the roller changing trolley 1 of the non-rolling mill end stopping point fed back by the first laser detection device 7 and the second laser detection device 8 is set to be X, and if the position of the roller changing trolley 1 of the non-rolling mill end stopping point fed back by the first laser detection device 7 and the second laser detection device 8 is not less than 5mm, the position of the roller changing trolley 1 of the non-rolling mill end stopping point fed back by the first laser detection device 7 and the second laser detection device 8 is set to be Y. So as to ensure the correctness of the walking position of the roll changing trolley.
When the positions of the roller changing trolley 1 fed back by the first laser detection device 7 and the second laser detection device 8 are different in the running process of the roller changing trolley, the fact that the roller changing trolley 1 falls down the track 2 is indicated, and immediate stopping is needed.
When the cable turntable 3 does not rotate and the roller changing trolley 1 fed back by the first laser detection device 7 and the second laser detection device 8 is in running, the cable turntable 3 is in error or the cable is in error, and the vehicle needs to be stopped immediately.
The invention is used for self-diagnosing the running state of the roll changing trolley in the roll changing working state of the hot rolling roll changing trolley, and realizes the functions of judging the blocking of the roll changing trolley, self-identifying the running position of the roll changing trolley, preventing the roll changing trolley from falling off and judging the abnormality of the cable turntable.
In one embodiment, the first laser detection device 7 and the second laser detection device 8 detect that the roll changing trolley 1 stops, which means that the positions of the laser emitted by the laser emitting device 6 irradiated on the first laser detection device 7 and the second laser detection device 8 are unchanged in a set time.
In one embodiment, the first laser detection device 7 and the second laser detection device 8 are both a laser grating sensor.
Claims (4)
1. A self-diagnosis method for the running state of a roller changing trolley is characterized in that: a cable turntable (3) is arranged on a roller changing trolley (1) driven by a variable frequency motor, an output torque detector is arranged on the variable frequency motor, a cable (5) on the cable turntable (3) is connected to a cable fixing point (4), the roller changing trolley (1) operates on a track (2), a laser emitting device (6) is arranged on the roller changing trolley (1), a first laser detecting device (7) and a second laser detecting device (8) are arranged on two sides of a roller changing channel, the laser emitting device (6) simultaneously emits a laser to two sides of the roller changing channel, and the two lasers are positioned on a straight line and the straight line is perpendicular to the track (2) where the roller changing trolley (1) is positioned; when the torque detector detects that the output torque of the variable frequency motor is not smaller than the set output torque and the first laser detection device (7) and the second laser detection device (8) detect that the roll changing trolley (1) is stopped in the working process, if the feedback current of the variable frequency motor is greater than or equal to 1.5 times of the load current within 0.5 ms time, judging the jam of the roll changing trolley, alarming and sending a stop instruction of the roll changing trolley (1); when the roller changing trolley (1) walks to a non-rolling mill end stopping point, the roller changing trolley (1) stops, the position of the non-rolling mill end stopping point is set to be Y, the position of the roller changing trolley (1) of the non-rolling mill end stopping point fed back by the first laser detection device (7) and the second laser detection device (8) is X, and if the absolute value of the position of the roller changing trolley (1) of the non-rolling mill end stopping point fed back by the first laser detection device (7) and the second laser detection device (8) is not less than 5mm, the position of the roller changing trolley (1) of the non-rolling mill end stopping point fed back by the first laser detection device (7) and the second laser detection device (8) is marked as Y; when the positions of the roller changing trolleys (1) fed back by the first laser detection device (7) and the second laser detection device (8) are different in the running process of the roller changing trolleys, the fact that the roller changing trolleys (1) fall down the track (2) is indicated, and immediate stopping is needed; when the cable turntable (3) does not rotate and the roller changing trolley (1) fed back by the first laser detection device (7) and the second laser detection device (8) is advancing, the cable turntable (3) has errors or the cable has errors, and the vehicle needs to be stopped immediately.
2. The method for self-diagnosing the running state of a roll-changing trolley according to claim 1, wherein the method comprises the steps of: the first laser detection device (7) and the second laser detection device (8) detect that the roller changing trolley (1) is stopped, namely, the positions, irradiated to the first laser detection device (7) and the second laser detection device (8), of laser emitted by the laser emission device (6) are unchanged in set time.
3. The method for self-diagnosing the running state of a roll-changing trolley according to claim 1, wherein the method comprises the steps of: the first laser detection device (7) is a plurality of laser receiving devices which are arranged at equal intervals along one side of a roller changing channel, the second laser detection device (8) is a plurality of laser receiving devices which are arranged at equal intervals along the other side of the roller changing channel, each laser receiving device of the first laser detection device (7) corresponds to each laser receiving device of the second laser detection device (8) one by one, and each pair of corresponding laser receiving devices is connected with a track (2) which is perpendicular to the nearest distance of the track.
4. The method for self-diagnosing the running state of a roll-changing trolley according to claim 1, wherein the method comprises the steps of: the first laser detection device (7) and the second laser detection device (8) are both a laser grating sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410310109.9A CN118180154A (en) | 2024-03-19 | 2024-03-19 | Running state self-diagnosis method for roller changing trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410310109.9A CN118180154A (en) | 2024-03-19 | 2024-03-19 | Running state self-diagnosis method for roller changing trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118180154A true CN118180154A (en) | 2024-06-14 |
Family
ID=91402742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410310109.9A Pending CN118180154A (en) | 2024-03-19 | 2024-03-19 | Running state self-diagnosis method for roller changing trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118180154A (en) |
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2024
- 2024-03-19 CN CN202410310109.9A patent/CN118180154A/en active Pending
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