Safety Control Method to Prevent Coiler Unloading and Turning Over
A safety control and coiler technology, which is applied in the field of automatic control of control and unloading of cold-rolled coilers, can solve the problems of inaccurate counting of encoders, collision between steel coils and walking beams, and coiling.
Active Publication Date: 2019-07-19
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology
[0004] The present invention aims at the technical problems existing in the prior art, and provides a safety control method for preventing coil unloading and rollover of the coiler. The accident caused by the collision between the steel coil and the walking beam caused by the inaccurate counting of the encoder when unloading the coil, this method can effectively judge whether the lateral movement of the steel coil trolley and the position of the height centering are correct, and can detect the steel coil trolley in time The position is abnormal, which can effectively avoid the accident of rolling over during the transportation of steel coils. The technology of the invention can effectively improve the unloading effect and effectively control the safety of coil unloading
Method used
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Embodiment 1
[0037] Embodiment 1: see Figure 1-Figure 3 , a kind of safety control method that prevents coiler from unloading rollover, described control method comprises the following steps:
[0038] 1) The unloading action starts;
[0039] 2) The steel coil loaded on the steel coil trolley moves horizontally, leaving the coiler area, and the horizontal encoder counts;
[0040] 3) Judging by the encoder calculation that the steel coil leaves the coiler area;
[0041] 4) The first limit device detects the actual lateral position of the steel coil trolley, and checks whether the position of the encoder in the horizontal direction is correct or not;
[0042] 5) The steel coil trolley moves laterally and descends at the same time in a stable state;
[0043] 6) Enter the area near the fixed saddle;
[0044] 7) The second limit device detects that the trolley enters this area and enters the fixed saddle area, and the steel coil trolley must meet the height requirements;
[0045] 8) The he...
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Abstract
The invention discloses a safety control method and implementation device preventing coil overturning during coil discharging of a coiler. The technical problems difficult to solve in site in the prior art are solved, and especially the coil overturning accident that because counting of an encoder is not accurate during coil discharging of a pickling line tandem cold rolling mill, a steel coil collides with a stepping beam is avoided. By means of the method, whether the transverse movement and height centering positions of a steel coil trolley are right or not can be effectively judged, the position abnormity of the steel coil trolley can be found in time, and the coil overturning accident in the steel coil transporting process can be effectively avoided; and by adopting the method, the coil discharging effect can be effectively improved, and meanwhile the safety of coil discharging is effectively controlled.
Description
technical field [0001] The invention relates to a control method, in particular to a safety control method for preventing coil unloading and overturning of a coiler, and belongs to the technical field of automatic control of coil unloading of a cold rolling coiler. Background technique [0002] At present, on the production line where the finished product is steel coils, the transportation of steel coils is basically carried out by steel coil trolleys to realize the height and horizontal seat movement. The process of upper uncoiler or lower coiler has very high requirements on the control accuracy of the lateral position of the trolley, and a slight deviation may cause the risk of the steel coil tipping over. The accuracy of the height position control during the steel coil movement is also very high. If the height position is deviated, the positioning will not be accurate, and the steel coil will hit the saddle and cause a rollover accident. Taking the acid rolling unit of...
Claims
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IPC IPC(8): B21C47/24
CPCB21C47/24
Inventor 高辉王金华
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD