Automatic centering welding deice for bolts of shell liner of mixing machine

Abstract

The invention discloses an automatic centering welding deice for bolts of a shell liner of a mixing machine. The device comprises a left centering bracket, a right centering bracket, a height adjusting mechanism and a pitch adjusting mechanism, wherein the height adjusting mechanism and the pitch adjusting mechanism are arranged on the left centering bracket and the right centering bracket; the height adjusting mechanism comprises adjusting bolts and nuts; eight adjusting bolts are symmetrically arranged on four front and rear corners of the left centering bracket and the right centering bracket respectively; and the nuts are mounted on the adjusting bolts and upper and lower surfaces of the left centering bracket and the right centering bracket. The height of the adjusting bolts on the four corners of the left centering bracket and the right centering bracket in the device are determined by the length of the liner bolts and are adjusted by upper and lower double nuts; the space between front, middle and rear centering dies on the left centering bracket and the right centering bracket are adjusted according to the space between the same row of liner bolts on the shell liner; and the space between the left centering bracket and the right centering bracket is adjusted by waist-shaped holes of a connecting rod according to the pitch of two rows of holes of the shell liner. The device can guarantee welding precision and quality and also can greatly increase the welding speed so as to meet the maintenance quality and the project duration requirement.

Description

technical field [0001] The invention relates to the field of installation and maintenance of mechanical equipment, in particular to a device for assembling and welding bolts of a cylinder lining plate of a sintering mixer and related plane lining plates. Background technique [0002] The barrel of the sintering mixer is generally equipped with a polymer rubber lining, the purpose of which is to prevent the uneven bonding of the barrel and protect the barrel from being worn by the material. The size of the liner is 1130mm×850 mm×30 mm, and it is fixed on the cylinder by two rows of 6 liner bolts. The liner bolts are directly welded in the barrel according to the hole pitch size when the liner is installed. The barrel liner of the mixer needs to be replaced regularly due to wear and damage during operation, and all bolts must be cut off and reinstalled during replacement. At present, the number of bolts on the barrel liner of the mixer is huge, ranging from 1000 to 2000 depe...

AI Technical Summary

Problems solved by technology

The existing liner bolts are assembled and welded by using a single bolt to determine the position through the marking or the actual number of the liner, and then use a square or the naked eye to find out the free assembly and welding; because the bolts are not restrained during assembly and welding, the alignment of the bolts after welding cannot be guaranteed. Among them, some skewed bolts have to be corrected by screwing on the nuts with a sledgehammer, otherwise it is difficult to install the liner; and whether the bolts are welded firmly can only be checked by screwing on the nuts and beating, and the strength is not easy to grasp

This single bolt free welding method is slow and has low precision. It takes nearly a week to replace all the cylinder liners of a large mixer, which cannot meet its maintenance schedule and quality requirements.

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