Vertical-mill gearbox with pure-sliding bearing configuration structure

Abstract

The invention relates to a vertical-mill gearbox with a pure-sliding bearing configuration structure. The vertical-mill gearbox comprises a box body, an input-stage bevel gear pair, a second-stage parallel-axis cylindrical gear pair, an output-stage planetary gear and an output flange; the output flange is supported through a set of tilting-pad thrust sliding bearings; other motion parts are supported by sliding bearings. The vertical-mill gearbox has the advantages that all stages of driving gear parts and driving parts of the gearbox adopt the sliding bearing configuration support structure, and sliding bearing support is high in bearing capacity, long in service life, high in cost performance, short in delivery time, good in maintenance performance and the like; lubricating oil films of the sliding bearings feature in providing damping for rotating parts and restricting vibration, running steadiness and bearing capacity of the gearbox can be improved, all the sliding bearings adopt forced lubrication, and an entire machine is higher in reliability; the entire structure can be more compact by the aid of the sliding bearing configuration support structure, the entire machine is downsized and reduced in weight, and power density ratio of the gearbox is increased.

Description

technical field [0001] The invention relates to a vertical mill gear box, in particular to a high-power, high-speed-ratio vertical roller mill gear box with a full sliding bearing configuration structure. Background technique [0002] At present, the vertical mill gearbox generally adopts the rolling bearing configuration structure. With the continuous large-scale and compact technology development of the vertical mill system itself, the vertical mill gearbox needs to transmit more and more power, and the power density ratio is higher and higher. Reliability requirements are getting higher and higher, and the deficiencies of the rolling bearing arrangement structure are becoming more and more prominent. First of all, the large-size rolling bearings applied to the input high-speed shaft of the vertical mill gearbox, with the increase of the gearbox power, it is more and more difficult to meet the design requirements of the load capacity and allowable speed at the same time, w...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new vertical mill with a full sliding bearing configuration for the practical problem that the current vertical mill gearbox generally adopts a rolling bearing configuration structure, and it is difficult to meet the increasing performance requirements of the vertical mill system for the vertical mill gearbox. Gearbox

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