Onboard cable steering device

The invention relates to an onboard cable steering device comprising a bottom plate (1). The bottom plate (1) is fixed on the ground through bolts (4), two bearing blocks (2) are arranged on the bottom plate (1) front and back, each bearing block (2) is provided with a pressure plate (3), a sliding bearing (8) is arranged between each bearing block (2) and each pressure plate (3), a steel pipe (5) is penetratingly mounted between the front and back sliding bearings (8), sheaths (6) are arranged at two ends of the steel pipe (5), one end of the steel pipe (5) is bent, an onboard cable (7) is penetratingly mounted in the steel pipe and provided with a hoop (9) at an inlet of the steel pipe (5). The cable is positioned by the sheaths of the steel pipe at an onboard position, the sliding bearings can change the direction of the onboard cable, thus, the cable can be effectively fixed, loss of the cable is reduced and service life thereof is prolonged.