| 摘要 |
The invention relates to a feeding box for special purpose machines and technological assemblies, used for obtaining various feedings in case of a.c. motor driving of said machines and assemblies. According to the invention, the feeding box for special machines and technological assemblies comprises a main housing (1) wherein an electromagnetic brake is mounted, said electromagnetic brake being attached to a driving axle (3) driven by an electric motor (4) from which the rotary motion is transmitted forward to several toothed wheels (5, 6, 7, 8 and 9) and to a central axle (10) on which a first sliding device is located, said sliding device comprising some central toothed wheels (11, 12 and 13) which, by means of some intermediate toothed wheels (14, 15 and 16), transmit the motion to a lower axle (17) on which a lateral toothed wheel (18) is also mounted, said lateral toothed wheel (18) engaging a lower toothed wheel (19) mounted on a lower axle (20), and by means of a second sliding device comprising several driven toothed wheels (21, 22, 23 and 24) transmit the motion to an upper axle (25) and to the feeding mechanism of the machine, the change of the transmission ratios being achieved by means of some actuating forks (26 and 27) and of some external levers (28 and 29).
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