Grinding device driven by auxiliary grinding roller

Abstract

The invention belongs to the technical field of roller type vertical mill equipment, and particularly relates to a grinding device driven by an auxiliary grinding roller, the grinding device driven by the auxiliary grinding roller comprises a transmission assembly, an auxiliary grinding roller assembly, a rocker arm assembly and a pressurizing assembly, the auxiliary grinding roller assembly is fixed in a rocker arm through a hollow shaft and a grinding roller expansion sleeve; the rocker arm assembly is fixedly connected to the connecting bridge; an auxiliary roller motor in the transmission assembly is connected with a transmission shaft through a coupler, the transmission shaft is connected with a blank cap through a key, the blank cap is connected with a hub through a reamed hole bolt, and a roller sleeve is fixed to the hub through a T-shaped bolt and a pressing ring. The pressurizing assembly adopts two hydraulic oil cylinders for loading, and lower pin shafts of the oil cylinders are connected to the middle shell; an upper pin shaft of the oil cylinder is connected with an upper lug part of the rocker arm, and the auxiliary grinding roller rotates around a rocker arm shaft through the pulling force of the hydraulic oil cylinder and compacts and grinds materials on the grinding disc. The invention provides the grinding device driven by the auxiliary grinding roller, which can reduce the vibration of the grinding machine and improve the grinding efficiency.

Description

technical field [0001] The invention belongs to the technical field of vertical roller grinding equipment, and particularly relates to a grinding device driven by an auxiliary grinding roller. Background technique [0002] current technology: [0003] In the existing vertical roller mill, the main motor drives the main reducer to rotate through the coupling, thereby driving the grinding disc to rotate, and the friction force generated by the grinding material on the grinding roller drives the grinding roller to rotate, and the grinding roller rotates passively. Some vertical mills contain the same number of main grinding rolls and auxiliary grinding rolls, which are evenly staggered on the grinding disc, generally in the configuration of "2 main rolls + 2 auxiliary rolls" or "3 main rolls + 3 auxiliary rolls". Among them, the main grinding roller is responsible for grinding the material, and the material will accumulate in front of the grinding roller, which will reduce the...

AI Technical Summary

Problems solved by technology

During the operation of the mill, there is high-frequency vibration, and the friction force of the grinding material on the auxiliary grinding roller is momentarily small; in addition, the working pressure of the auxiliary grinding roller is low, especially when the friction coefficient of the material is small, the friction of the material driving the auxiliary grinding roller to rotate The force is too small; the linear velocity at the middle diameter of the auxiliary grinding roller is lower than that at the corresponding grinding disc position, and there is a problem that the speed difference is too large, resulting in the accumulation of materials in front of the auxiliary grinding roller, and there are large fluctuations in the thickness of the material layer and grinding. The problem of large machine vibration is not conducive to the stable and reliable operation of the equipment

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