Mobile holding system for cable feeders

The system has a socket pipe (4) firmly connected in a guide sliding and fixed with an outer casing (12) over a base profile (11) in defined length. A rail fastening device (3) is connected with the socket pipe by a rail base (2) of a guide rail (1). Tensioning blocks (9, 16) and a counter bearing (6) are connected with bearing profiles (7). The bearing profiles are respectively attached on the base profile and the socket pipe. The tensioning blocks are connected with the counter bearing and a support profile (5) and screwed on a cable feeder (14).