Overload limiter for robot arm - has housing and unit responding to overload and sensor transmitting control signal and moving unit with pressure bushing

摘要

The pressure bushing (10) moves axially practically without play in relation to the housing (1), the movement of which acts on a pressure vol. connected at a sensing unit designed as a pressure gauge (26). A pressure flange also makes contact, which is supported moving ball jointed over a dished circumferential surface (33) and a dished endface (34), and is distributed at its side facing the pressure bushing (10) in the circumferential direction. Rollers (32) being rotatable around radial axes, stand in engagement with essentially V-shaped slots (27), in which the endface of the pressure bushing (10) faces the pressure flange (11). ADVANTAGE - Responds to all types of overloads and is also suitable for very large trip moments.