| 摘要 |
The safety coupling includes a driving part (10) and a driven part (12) able to rotate around the same rotation axis (X) and respectively provided with first torque transmission means (14, 24) and with second torque transmission means (30, 36, 40, 52, 60, 62) having front toothings (24, 40, 60, 62) normally meshing with each other for the transmission of torque between the two parts of the coupling (10, 12). The safety coupling also includes torque-sensitive opening means (66, 72, 110) arranged to disengage the front toothings (24, 40, 60, 62) of the first (14, 24) and second (30, 36, 40, 52, 60, 62) torque transmission means, thus interrupting the torque transmission, when the torque transmitted between the two parts of the coupling (10, 12) exceeds a given maximum value. The torque-sensitive opening device includes a pressure chamber filled with an incompressible fluid and a valve device adapted to automatically control the discharge of the fluid from the pressure chamber if a given maximum fluid pressure value is exceeded in the pressure chamber. |
