Ore crusher rotor disk hinge pin dismantling method

Abstract

The invention discloses an ore crusher rotor disk hinge pin dismantling method. The method comprises the following steps: firstly using an oxygen lance with suitable length corresponding to a rotor, thick wall and small inside diameter to cut hinge pins on front row disks, cooling the cut hinge pins, then hammering the hinge pins into pieces with a hammer; for hinge pins on back row disks, placinga positioning sleeve between a disk of dismantled hinge pins and disk of hinge pins to be dismantled, passing the oxygen lance through a hinge pin bore of the disk of the dismantled hinge pins and apositioning bore of the positioning sleeve to cut hinge pins on back row disks which can not damage the rotor and disks after positioning the oxygen lance, using the oxygen lance to cut hinge pins from the tail end of the rotor after dismantling hinge pins on the front half section of rotor disks, and repeating the above steps to dismantle hinge pins on all the disks in turn. The method of the invention can conveniently dismantle hinge pins, increase the dismantling efficiency, reduce the labour intensity and not damage the disks and the rotor.

Description

technical field [0001] The invention relates to a method for removing a disc pin shaft of a rotor of an ore crusher. Background technique [0002] Ironmaking sintering plant ore crusher is used to crush lime ore, such as figure 1 and figure 2 As shown, the total length of the rotor 1 assembly is 1845mm, and there are 21 rows of discs 2, and 12 pin holes 3 are evenly distributed on each row of discs 2, and a pin shaft is equipped in every three rows of discs. A hammer arm and a hammer head are arranged between the disk and the disk, and the hammer arm is connected by the pin shaft in the pin hole 3; when working, the pin shaft and the disk rotate together to drive the hammer arm to move, and the hammer arm drives the hammer head to When crushing ore, the temperature of the rotor of the crusher reaches 100-150°C. Since the pin shaft drives the hammer arm to work at high temperature for a long time and is eroded by ore particles and steam moisture, the rust is seized in the ...

AI Technical Summary

Problems solved by technology

A hammer arm and a hammer head are arranged between the disk and the disk, and the hammer arm is connected by the pin shaft in the pin hole 3; when working, the pin shaft and the disk rotate together to drive the hammer arm to move, and the hammer arm drives the hammer head to When crushing ore, the temperature of the rotor of the crusher reaches 100-150°C. Since the pin shaft drives the hammer arm to work at high temperature for a long time and is eroded by ore particles and steam moisture, the rust bites to death in the pin shaft hole and cannot be disassembled.

Therefore, when it is necessary to repair and disassemble the pin shaft of the rotor, conventional tools such as hammers and long drills are usually used to remove the pin shaft on the disc. However, this method is extremely inefficient, labor-intensive, and easily damaged. rotor

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