Field processing method for grinding surface of slip ring in feeding slip ring body

Abstract

The invention provides a field processing method for grinding the surface of a slip ring in a feeding slip ring body. A supporting frame is built beside the feeding slip ring body, a lathe is installed on the supporting frame, a grinding wheel is installed on a motor output shaft the rotation speed of which is 2800-3000rpm, a motor base is fastened to the bottom slide of a saddle which transversally shifts along a guide rail of the lathe, and a protective cover is assembled on the non-working side of the grinding wheel. The field processing method comprises the following steps: jacking the feeding slip ring body end of a cylinder through a high-pressure pump of a large slipper mill lubrication station; starting a low-speed motor of a driving device of a large slipper mill so that the cylinder rotates; and carrying out surface grinding processing on the position with the maximum outer diameter, of the slip ring, wherein the surface grinding processing is divided into coarse grinding and fine grinding; in coarse grinding, the roundness and straightness of the slip ring can be achieved by coarse grinding via a coarse grinding wheel; and after the roundness and straightness meet the technical requirements, the surface roughness of the slip ring can be achieved by fine grinding via a fine grinding wheel until the surface roughness meets the technical requirement. The field processing method has the characteristic of short maintenance period, is simple and feasible to operate, and is safe and reliable in performance.

Description

technical field [0001] The invention belongs to the technical field of large-scale sliding shoe mills, and in particular relates to an on-site processing method for grinding the surface of a slip ring in a feeding slip ring body of a large-scale sliding shoe mill. Background technique [0002] The cylinder diameter of the large sliding shoe mill is greater than 4m. With the development of my country's cement industry technology in recent years, the use of large sliding shoe mills has become quite common. Compared with the hollow shaft mill, the large sliding shoe mill has the advantages of stable transmission, low noise, large crushing ratio, high grinding and screening efficiency, strong production capacity, long service life, easy maintenance and management, central control, high degree of automation, It has many advantages such as strong adaptability to raw materials. [0003] The cylinder of the large-scale sliding shoe mill is composed of a feed slip ring body, a middl...

AI Technical Summary

Problems solved by technology

After on-site welding, the dimensional accuracy, shape and position tolerance, and surface roughness of the slip ring body of the feed slip ring often cannot meet the requirements for the normal operation of the mill, so the slip ring must be ground on-site

[0005] In addition, during the operation and rotation of the cylinder body, due to the long-term impact of the slip ring of the feed slip ring body by large and heavy grinding bodies and materials, fatigue damage occurs at the weld between the slip ring and the web, and welding on both sides of the web ring fissure

Usually, if the annular crack is not too serious, repair welding can be carried out on the weld of the slip ring and the web, but repair welding is not ideal, because the slip ring may be deformed after field repair welding, which affects the size of the slip ring accuracy, shape and position tolerance or surface roughness, etc., so the slip ring must also be repaired by on-site surface grinding