| 摘要 |
Feeding screw drive, in particular for meat mincing machines in meat processing industry including a toothed gear with an input roller the pinion of which is coupled with a toothed wheel seated on an output shaft which in turn is joint through coupling with a worm (perpetual screw) shaft, characterised in that the output shaft (5) is situated on bearings in such a way as to enable an axial travelling in the cover (14) and the body (17) via radial bearings (4) and via axial bearing (3) seated in the resistance cover (10) together with pack of springs (2), while the gear box bearing elements like the body (17), side cover (14) and resistance cover (10) are made preferably as metal castings while in the drive the following four .dependencies are met:1) Ps = (1.4/2) Po2) C/Ps = 4/83) fmax = (3.7/9) x 10 <-3>R<2>C<->1/24) Pzbl = (1.1/1.6)Cwhere:Ps - denotes the force of initial spring tension (2) (daN)Po - denotes the maximum axial force of the worm (6) in (daN) at the normal machine operationC - denotes bearing capacity in daN of the axial bearing (3)fmax - denotes strain of springs (2) in mm from the force Pmax = CR - denotes the cover radius (14) in mmPzbl - denotes the force of springs interlock (2) in (daN)<IMAGE>
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