Torque limiting device, particularly for power transmission elements

摘要

A torque limiting device, particularly for power transmission elements, is provided. The torque limiting device includes a first connecting member and a second connecting member, which is connected rotatably to a driven element. The first connecting member includes a motor driving disk and the second connecting member includes a sliding disk, and further includes a pin supporting body which comprises a drum that is assembled on the second connecting member and includes a plurality of radial holes, each one of which accommodates a pin that is pressed, toward the center of the drum, by elastic means, and abuts, with at least one of its faces which is inclined with respect to the central rotation axis of the second connecting member, against at least one corresponding abutment face.

主权项

1. A torque limiting device, for power transmission elements, the torque limiting device comprising:
a first connecting member, which is connected rotatably to a driving element including a motor driving disk; a second connecting member, which is connected rotatably to a driven element, and including a sliding disk that is adapted to slide axially with respect to the second connecting member, the motor driving disk and the sliding disk being able to face each other and each comprising, on the respective abutment faces, a plurality of conical seats, each one of the conical seats being adapted to accommodate a ball; a pin supporting body which includes a drum that is assembled on the second connecting member, the drum including a plurality of radial holes; and a plurality of pins, wherein at least one pin is accommodated in each of the radial holes and is adapted to slide radially in the radial hole, each one of the pins being pressed, toward the center of the drum, by elastic means, and abutting, with at least one inclined face of each one of the pins which is inclined with respect to the central rotation axis of the second connecting member, against at least one corresponding abutment face, which is substantially parallel to the at least one inclined face of the pin, and is provided in a portion of the sliding disk, the axial movement of the sliding disk, as the contrasting torque provided by the second connecting member increases, being contrasted by the radial compression thrust of the pins, due to the elastic means, at the inclined face of the pins that presses against the corresponding abutment face provided in the portion of the sliding disk.