Flere måder til fælles positionering af lejer
The inner and outer rings of the end bearing are fixed in two directions and bear two-way axial force. The bearing at the other end is not fixed axially, allowing the heated expanded shaft to extend freely. Due to different types of bearings, "two-way fixed" and "floating" " The structure of the bearing is also different. Usually, the bearing subjected to the smaller radial force is fixed in both directions to bear the axial force and coordinate the service life of the two bearings; when there is no axial force on the shaft, the bearing subjected to the smaller radial force swims to make the swimming convenient. This positioning method is often used for the shaft with large span or the shaft with high working temperature. How should the bearing be positioned on the shaft and the chassis frame? In the shafting, there are During the operation of some shafts, due to the working load, environment, speed and other problems, the shafts will have thermal expansion and cold contraction in the axial and radial modes; some shafts also need to transfer the load force to the frame because they bear a large axial load. There are three common bearing positioning modes
Envejs fiksering i begge ender
Denne positioneringsmetode er, at den indvendige ring af lejet fastgøres på tappen ved hjælp af interferenspasning og blokeres af akselskulderen, og lejets ydre ring blokeres af lejets endedæksel. Lejerne i begge ender forhindrer henholdsvis en{{0}}bevægelse af akslen. For at forhindre, at lejet sidder fast af akslens termiske forlængelse, er der et mellemrum på 0.2 0,3 mm mellem lejets endedæksel og endefladen af lejets ydre ring til radialen leje; for det radiale trykleje er der et mellemrum på 0,2 0,3 mm mellem lejets endedæksel og akslen. En gruppe pakninger mellem lejesæderne bruges til at justere den indvendige frigang af lejet. Denne positioneringsmetode er velegnet til akslen med lille transmissionsmoment og lav arbejdstemperatur.
Tovejs fikseret i den ene ende og svømning i den ene ende
The inner and outer rings of the bearing at one end are fixed in two directions and bear two-way axial force. The bearing at the other end is not fixed in the axial direction, allowing the heated and expanded shaft to extend freely. Due to the different types of bearings, they are "two-way fixed" and "swimming" "The structure of the bearing is also different. Usually, the bearing subject to the smaller radial force is fixed in both directions to bear the axial force and coordinate the service life of the two bearings; when there is no axial force on the shaft, the bearing subject to the smaller radial force swims to make the swimming convenient. This positioning method is often used for the shaft with large span or the shaft with high working temperature.
Støtte i begge ender
Når et par sildebensgear går i indgreb, vil der forekomme en lille aksial bevægelse på grund af fremstillings- og installationsfejl. For at forhindre gearet i at sætte sig fast, er de to understøtninger på den lille sildebensgearaksel ofte designet som svømmemode, og de to understøtninger på sildebensgearakslen er fastmonteret. Når understøtningen af akslen er glidende, placeres akslen aksialt ved akselskulderen. Når den ene ende skal fastgøres, er begge sider af tappen i den faste ende fastgjort Skulder eller krave, eller kombination af radial glideleje og trykglideleje.
