Reducer repair process points

Reducer repair 2019 - key points of construction technology 06 - 27 1. Assembly assembly points of two parts, bearing parts assembly and reducer assembly as a whole. Gear and bearing installation process is as follows: ( 1) Assembly should according to the order when assembly, generally follow the principle of from middle to both ends of assembly. General first big gear and small gear. With the gears, bearings and shaft is interference fit. Bearing pad, cooking method heating oil bearing, usually should be bearing in oil preheated to 100 ℃ or so. Then knocked with copper bar mat to shoulder position, and gear in addition to cooking oil heating, also can use oxygen welding heating directly, directly with a hammer into the installation site, for a lot of gear and bearing can also being connected with a jack after heating. Is installed, should use measurement. （ 2) Reducer overall assembly before you clean up and down shell, each contact surface, and then install the high-speed shaft. High speed shaft helical gear and two axis helical gear meshing, therefore, high speed shaft location to be determined by biaxial. About to adjust its position as well as the high speed shaft position before and after, until the two helical gear meshing is very good. Judgment method: biaxial, left hand holding the right hand is high speed rotating shaft, the positive and negative can't swing, then install the end cover, end cover and between bearing and housing is usually need shim adjustment, adjusted to record each end cover gasket. High speed axial and biaxial orientation, three axis positioning is based on the above small gear meshing of gear and shaft, the thickness of the pinion gear is usually thicker than the big gear, therefore, adjust the three axis about location, makes the big gear in the intermediate position of the pinion advisable, then heating tablets end cover. All axis positioning, end cover and gasket will be removed, and place them in order, from top to bottom shell suture with good sealing rubber, the shell with good positioning pin, cover up shell installed bolts, gasket and end cover and in order. Finally, the coupling of original back and fill it up with a suitable amount of lubricating oil, cover the hole cover and breathable hat, deceleration machine repair work is done.