SELF-CONTAINED AND SELF-ADJUSTING SYSTEM FOR IMPROVING OPERATIONAL PROPERTIES OF DOUBLE-LINK POWER TRACTION FACILITIES Russian patent published in 1994 - IPC

FIELD: transportation facilities. SUBSTANCE: system has hydraulic pump, liquid flow divider, hydraulic cylinders, and tractive-force sensor with electric output provided between traction hydraulic cylinder and trailer. Self-excited oscillator is connected in parallel with tractive force sensor and has set-point element inserted in circuit by means of mode-of-control lever. EFFECT: provision for operation under random external effects of running surface and soil resistivity. 2 cl, 1 dwg