Towbar of variable length

摘要

A towbar which is of variable length and has an inner pipe (3) and an outer pipe (4) in which the inner pipe (3) is displaceably guided and which can be fixed in various displacement positions by means of a socket pin connection is designed in such a way that the socket pin connection is arranged in the inner pipe (3), as are all the important parts for unlocking and for securely locking the socket pin connection between inner pipe (3) and outer pipe (4). An extremely space-saving structure which is protected against contamination is realised, also it is possible, without requiring a significant amount of space, to equip a lever (14), which is provided for locking or unlocking the socket pin connection, with an automatic actuation device, for example a pressure medium cylinder. <IMAGE>