| 摘要 |
846,736. Universal joints. UNITED ENGINEERING & FOUNDRY CO. April 11, 1957, No. 11918/57. Class 80 (2). A universal drive coupling between two members 24, 32, for connecting a pair of shafts such as a roll neck 12 and its driving-spindle 16, similarly coupled to a gear-shaft 15 in a rolling - mill, is provided with a spring 39 which, when one of the coupling members 24, 32 is disconnected from its shaft, causes complementary surfaces on the coupling-members to engage and hold the said members axially aligned. This facilitates changing a roll 12, which latter has a slip-out drive connection with the coupling-member 24 by complementary flats 25. The coupling comprises spherically-crowned teeth 34 on the member 32 engaging longer straight teeth in the member 24. The spring 39 is mounted in a recess in the member 32 and presses axially outwards on a plate 42 having a spherical face bearing on a wear-plate in a plate 47 carried by the coupling-member 24. When the roll 12 is slipped out of the coupling-member 24, expansion of the spring 39 presses the rearface of the coupling-member 32 against a surface 53 carried by the coupling-member 24, thus maintaining alignment of the coupling- members 24, 32. The coupling-member 32 is welded at 35 to the spindle 16 and a seal 54 retains lubricant in the coupling. |
