| 摘要 |
Efficiencies of construction, operation and maintenance are provided by an overload release coupling comprising a rotatable housing means having a driven member journalled therein with the driven member having radially extending resiliently biased piston means that engage mating recess areas on an inner surface area of the housing means. Should an excessive load prevent the housing means and an attached sprocket wheel from moving, the piston would overcome the resilient biasing force and be forced out of their recessed seats to prevent injury to persons and apparatus. A microswitch activated by the unseating stops the machine at once. An adjustment means generally radially aligned with the piston means and a resilient means extends into an open central portion of the driven means whereby adjustment of the resilient biasing force against the radially outwardly projecting piston may be readily effected. The housing member includes first and second halves which have a groove at their juncture area which groove receives a wearing member insert that forms the inner recess surface which engages the piston members. The halves and insert as well as a chain wheel may be held together by a connector means to allow ease of assembly and disassembly. |
