Method for improving curvilinear running speed of railway vehicle and smart tilting system

A method for improving a curvilinear running speed of a railway vehicle, wherein when the railway vehicle is driven on a curve, raising and falling of air springs on both sides of the railway vehicle are controlled by a control assembly to realize tilting of the railway vehicle toward an inner side of the curve;

• a transverse component of gravity after the tilting of the railway vehicle is used for balancing part of a centrifugal force and reducing an influence of the centrifugal force, thereby improving a curve driving speed of the railway vehicle;
• and meanwhile, an adjustable torsion bar system is controlled to provide a unidirectional anti-rolling torque for preventing the railway vehicle from rolling toward an outer side of the curve without hindering the railway vehicle from tilting slightly toward the inner side of the curve, so as to ensure driving safety of the railway vehicle on the curve,
• wherein when the railway vehicle enters a transition curve, the adjustable torsion bar system is controlled to be in a unidirectional anti-rolling state, and the adjustable torsion bar system does not prevent the railway vehicle from tilting to the inner side of the curve;
• once the railway vehicle has a tendency to roll to the outer side of the curve, the adjustable torsion bar system provides the unidirectional anti-rolling torque to prevent the railway vehicle from rolling to the outer side of the curve,
• wherein the adjustable torsion bar system comprises:
• a torsion bar and two hydraulic connecting rods;
• the torsion bar is fixed on a bogie or a vehicle body;
• two ends of the torsion bar are hinged with one end of each of the two hydraulic connecting rods respectively;
• another end of each of the two hydraulic connecting rods is hinged with two sides of the vehicle body or the bogie respectively;
• a length of the two hydraulic connecting rods is capable of being transformed between a fixing state, a unidirectional follow-up elongation only state, or a unidirectional follow-up shortening only state, so that the adjustable torsion bar system provides a bidirectional anti-rolling torque or the unidirectional anti-rolling torque, and
• wherein when the railway vehicle enters the transition curve, a length of one of the two hydraulic connecting rods on the inner side of the curve is controlled to be locked and unchanged or in a unidirectional follow-up shortening state;
• another one of the two hydraulic connecting rods on the outer side of the curve is controlled to be in a unidirectional follow-up elongation state;
• when the railway vehicle inclines to the inner side of the curve, the length of the one of the two hydraulic connecting rods on the inner side of the curve is locked and unchanged or shortened with the tilting of the railway vehicle;
• the another one of the two hydraulic connecting rods on the outer side of the curve extends with a swing of the railway vehicle;
• and once the railway vehicle has a tendency to roll to the outer side of the curve, the adjustable torsion bar system provides the unidirectional anti-rolling torque to prevent the railway vehicle from rolling to the outer side of the curve.