Patent ID: 10953915

Abstract:
A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (6) and a tank port (T) connected to a tank flow path (7), a working port arrangement having a left working port connected to a left working flow path (8) and a right working port (R) connected to a right working flow path (9), a bridge arrangement (14) of variable orifices (A2L, A2R, A3L, A3R) having a first left orifice (A2L) connected to the main flow path (6) and to the left working flow path (8), a first right orifice (A2R) connected to the main flow path (6) and to the right working flow path (9), a second left orifice (A3L) connected to the left working flow path (8) and to the tank flow path (7), and a second right orifice (A3R) connected to the right working flow path (9) and to the tank flow path (7). Such a steering unit should make steering comfortable. To this end a measuring motor (15) a measuring motor (15) is arranged in one of the left working flow path (8) and the right working flow path (9) and an amplification flow path (16) is connected to the one working flow path (8, 9) downstream the measuring motor (15).