| 摘要 |
1,055,401. Overload release clutches. KENNEDY VAN SAUN CORPORATION. March 1, 1965 [March 2, 1964], No. 8740/64. Heading F2C. An overload clutch comprises a ball 32 normally housed partly in a socket 50 in an insert 28 in a belt driven flywheel 12 and partly in a socket 21 in block 20 in an arm 17 fixed to a hub 16 which is keyed to shaft 10. A spring-loaded ball 44 biases ball 32 to the clutched position but the face 31 of insert 28 is shaped so that a reaction force tends to move ball 32 into socket 21 and on overload the ball 32 is moved, aided by centrifugal force, along a groove 24 in ring 23 into socket 21 where it is held by ball 44, a plug 22 being removed to re-engage ball 32 with the flywheel. In the engaged position the centre 33 of ball 32 lies inside the plane face of arm 17 which faces the flywheel. The spring loading of ball 44 can be adjusted by nuts 42, 41 on a shaft of ball seat 43. On disengagement due to overload, kinetic energy of ball 32 is dissipated by frictional resistance between balls 32, 44 and between ball 44 and its seat 43. |
