1. The best solution to reduce the failure of the rolling table and the repair time
From the above analysis, it can be seen that in order to reduce the failure and repair time of the rolling table, it is necessary to change the structure and transmission mode of the roller bearing seat. Over the years, steel rolling workers have done a lot of research and work for this. After years of discussion and use, so far, the best bearing seat structure suitable for rolling steel production is the boltless cartridge bearing seat with national patent technology, the patent number is: ZL8.8, and the patentee is Qiping. Chain drive is the best transmission method for starting the roller table with non-frequent forward and reverse rotation in steel rolling production.
Specifically, the optimal structure and transmission scheme of all feeding rollers, billet and finished product conveying rollers are: the combination of the patented boltless cartridge bearing seat and the chain drive; all the front and rear rollers of the roughing mill The best structure and transmission scheme of the special roller table such as , in front of the furnace (out of the furnace) is: the combination of the patented boltless cartridge bearing seat and the motor single-trailer transmission.
2. The effect of the best plan to reduce the failure of the rolling table and the repair time
Due to the national patented technology of the boltless cartridge bearing seat, it is specially designed according to the working characteristics of the rolling table. Compared with the bevel gear transmission, the chain drive is not as stable as the bevel gear, and the speed limit is not as high as that of the bevel gear, but it is completely It can meet the needs of steel rolling production. The bevel gear transmission structure is used on the steel rolling production roller table. Not only does it not play its advantages of high speed and stability, but it has more failures, longer repair time and higher maintenance costs than chain transmission. As the saying goes, what is the best? Application is the best.
The above scheme is the best because it has the following effects:
① It can reduce the investment cost of one-time roller table production by (10-20)%.
② The service life of the bearing can be increased by 3 to 5 times, and the failure of the rolling table bearing can be reduced by 80%.
③ The emergency repair and replacement time can be shortened to less than ten minutes (the bevel gear drive roller table emergency repair and replacement time needs at least two hours), reducing the emergency repair and replacement time by 90%;
④ It can reduce the consumption of spare parts and maintenance costs of the rolling table by 60%.
A medium-profile production line with an annual output of 300,000 tons can reduce the investment in the construction of the roller table by 1-2 million yuan, increase the output by 30,000 to 50,000 tons per year, and reduce the annual loss of 2.5-3.5 million yuan due to roller failures. It can save 1-1.5 million yuan in spare parts and repair costs every year.
