| 摘要 |
The safety system is applied to the device that causes the movement of the mobile jaws of a quick coupling device that hooks the pins (19.2) of an implement. It is based on the application of a small threaded shaft (1) whose two not threaded ends (2.1 and 2.2), idle in two bushings (3.1 and 3.2) integral to the structure of the quick coupling device. The not threaded end (2.2) is integral with a nut (4) that permits the rotation of the small shaft but not its axial movement when, through the opposite end (2.1), it is subjected, by a speed reducer, to a twisting moment. The rotation of the shaft (1) causes the axial movement along the axis K-K of a nut screw (16) integral to the mobile jaws (18), that hook the pins (19.2) of the implement. The stress transmitted by the implement during its application are discharged on the structure constituted by the plates (12, 13, 14) and of the quick coupling device, through the nut screw (16). |
