Patent ID: 6189224
Filing Date: 2001-02-20
Classification: E01B

Abstract:
A mobile track working machine for rehabilitating a ballast bed supporting a track extending in a longitudinal direction, comprising(a) a machine frame extending in the longitudinal direction and supported on the track by undercarriages for mobility in an operating direction, the machine frame being composed of(1) a first frame part, leading in the operating direction, and(2) a second frame part linked thereto,(b) a longitudinal inclination meter mounted on the first frame part for detecting an inclination of the track in the longitudinal direction,(c) working units mounted on the second frame part, the working units being adjustable with respect to a vertical direction,(d) a laser reference system arranged on the machine frame for controlling the vertical position of the working units, the laser reference system being formed by(1) a laser transmitter on the first frame part for establishing a reference plane and(2) laser receivers on the second frame part for detecting said reference plane(e) an adjusting device associated with the laser transmitter for relative adjustment of the position of the reference plane,(f) an odometer mounted on the machine frame, and(g) a control device connected to the longitudinal inclination meter as well as to the odometer and the adjusting device, the control device being designed for conveying, in a time-delayed manner and in dependence upon the distance travelled by the machine as registered by the odometer, a longitudinal inclination value detected by the longitudinal inclination meter to the adjusting device for the purpose of adjusting the reference plane in accordance with the detected longitudinal inclination of the track.