2020-11-11 09:57:54 1033
The rotor is an important part of the single-stage crusher. The middle of the rotor shaft has a square section, and both ends are circular sections. The square section is equipped with a hammer plate. The hammer plate has two round nuts for fixing the hammer plate, and the round nut is equipped with two A spherical spherical roller bearing, and the other end is equipped with a large pulley with flywheel performance. The single-stage crusher rotor requires more attention when installing, so we should install it in the correct way. The following article will introduce the single-stage The main installation steps of the crusher rotor.
1 Cleaning and lubrication of the bearing
Although the rotor is transported to the site as a whole, the bearing should be cleaned again and then greased , The cleaning of the bearing requires the bearing cover and the bearing seat to be separated from the bearing, exposing its interior, cleaning the original non-grease, opening the outer ring of the bearing, and filling the shaft groove and oil on the outer ring of the inner and outer raceways of the roller cage Thorough cleaning of the holes and other parts of the bearing housing should also thoroughly clean the inner cavity of the bearing housing. The so-called thorough cleaning is not only to wipe off the grease with a wiping material, but also to use a cleaning agent to clean the residual grease (including the flushing method). Raise the cloth and carry out it in a clean space. When the work is stopped, the bearing should be wrapped with a plastic cloth, cleaned and dried, and then re-coated with grease.
2 Check the bearing assembly records provided by the manufacturer
The tightness of the bearing withdrawal sleeve must meet the requirements, the assembly tolerances of the bearing outer circle and the bearing box must meet the requirements, and the lack of assembly records, the bearing should be reinstalled, In order to prevent unexpected accidents during use. The tightness of the bearing withdrawal sleeve is described in detail. The thermocouple temperature measuring device of the bearing is installed and calibrated before the test run. The display protection of the control room in the middle of the night The device is switched on to monitor the temperature of the bearing and protect it from overheating.
3 Hammer head assembly
1) Rotor The weight of the hammerheads on the same radial plane on the working cylindrical surface should be equal or close to each other. On the working surface of the rotor, the weight of each row of hammerheads in the axial direction should be equal or close to each other. End-decreasing or staggered configuration weight 3) Before installation, the new hammer head should be checked according to the requirements of the drawing. Over-sized hammer heads should be ground. It is strictly forbidden to use unqualified hammer heads. 4) Whether it is a new hammer or flanging use The old hammerheads must be weighed one by one, numbered in the order of the weight of the hammerhead, and assembled in strict accordance with the technical requirements on the rotor assembly drawing.
5 The assembly of the pulley
Before installation, the shaft holes of the main shaft and the large pulley must be cleaned. After the large pulley is in place, check whether the position of the spokes affects the extraction of the hammer shaft. The cleaning agent cleans the position of the expansion sleeve again, and coats a thin layer of dilute lubricating oil, puts the expansion sleeve in, and uses a wrench to make the expansion sleeve preliminary fit with the inside and outside for further correction.