Adjusting device for horn mouth of side guide plate of hot rolling coiler and adjusting method thereof

Abstract

The invention relates to an adjusting device for a horn mouth of a side guide plate of a hot rolling coiler. The adjusting device is characterized by comprising a side guide plate body, a gear shaft, a rack type push rod, a horn mouth adjuster, a synchronizing shaft, a synchronous coupling and a driving oil cylinder, wherein the gear shaft is arranged below the rack type push rod, the side guide plate body is connected with the rack type push rod through a side guide plate connecting pin, the gear shaft is connected with the synchronizing shaft through the horn mouth adjuster and the synchronous coupling, and the driving oil cylinder is connected with the side guide plate body through an oil cylinder connecting pin.

Description

technical field [0001] The invention relates to an adjustment device, in particular to a bell mouth adjustment device and an adjustment method for a side guide plate of a hot rolling coiler, belonging to the technical field of metallurgical machinery. Background technique [0002] The entrance of the coiler of the hot-rolled strip steel production line is equipped with an entrance side guide plate, which is used to guide the strip steel into the coiler smoothly, and clamp the strip steel to align with the rolling center line, so as to reduce the misalignment of steel coils, tower-shaped coils, etc. shape defects. There is one side guide plate on the transmission side and the working side of the transmission roller table, the distance from the inner surface of the drive side of the guide plate to the inner surface of the working side is called the opening of the side guide plate, and the opening of the entrance side of the side guide minus the opening of the exit side Called...

AI Technical Summary

Problems solved by technology

This kind of side guide plate has fast response speed and high overall control precision, and can smoothly realize the corresponding position and pressure control according to the strip threading situation. However, this kind of side guide plate also has the following problems in actual use: because the lining plate is directly connected to the strip steel. If there is contact, there will be wear and tear, and the liner needs to be replaced frequently. The liner and the guide plate body, and the guide plate body and the push rod must be detachable connections such as pin connection. Clearance, coupled with machining errors, lead to the fact that the body of the guide plates on both sides often cannot guarantee the state of the slightly positive bell mouth or even the negative bell mouth state. Accumulative errors such as wear and deformation, deformation caused by long-distance guide plate body stress release, and the value of the bell mouth will also change, which is not within the reasonable range initially set.

For example, Chinese patent CN103920750A discloses a "Hot Rolling Line Coiler Front Side Guide Plate System", which reduces strip friction by adding guide wheels to the guide plate body, thereby improving the edge of the strip steel, but This solution does not have any bell mouth adjustment method. Once the bell mouth changes due to pin wear and other reasons, it has no bell mouth correction function.

Chinese patent CN102527771A discloses "Mobile Hot Rolling Coiler Front Side Guide Plate and Its Moving Guide Device", which ensures that the moving arm does not shift in the three-dimensional plane by adding support under the push rod of the side guide plate, but this This kind of mechanism can be realized through the pressing wheel and supporting wheel of the side guide plate mechanism itself which is commonly used at present and can reduce friction, and this scheme does not mention how to realize the adjustment of the bell mouth

Chinese patent CN203751032U discloses "Synchronous Shaft Connecting Device of Side Guide Plate in Coiling Area". The structure of the side guide plate is the current general structure form. The reliability of the connection, there is no mention of how to adjust the bell mouth

Chinese patent CN103801566A discloses "A Control Method for Reducing Coiling Edge Defects of Hot-rolled Steel Sheet Rolling Line", which mentions that the opening degree of the entrance is required to be greater than the degree of the exit, that is, the side guide plate is required to be in a positive trumpet state, but its adjustment is through The method of adding gaskets, there are unsafe factors and unreliable connection factors in the background description of this case, which is also the problem to be solved in this case

Chinese patent CN203526218U discloses "A Side Guide Plate of a Hot Rolling Unit Rolling Mill and Coiler". It reduces the friction between the strip steel and the guide plate by installing side guide rollers on the side guide plate, but how to ensure that the side guide plate is slightly positive. Good guiding properties of the side guides, still not mentioned

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