SU486499A3 - Railway carriage - Google Patents

Description

The invention relates to the field of railway transport and, in particular, to passenger train carriages reaching speeds in excess of 100 km / h.

Known railway cars, including the body, wheelsets, frames, mounted on the wheelsets, and cradle beams connected to the frames by means of suspensions, allowing lateral movement of the cradle relative body.

When such cars move at high speeds along existing rail lines due to insufficient inclination of the latter on roundings, there is an undesirable effect on centrifugal force on passengers.

The purpose of the invention is to increase passenger comfort by laying the car in such a way that the actual center of rotation of the body is located in the longitudinal vertical plane of symmetry of the car or close to it and above the level of the body floor when passing the curved track sections.

In this case, the resultant force acting on the passenger is perpendicular or close to perpendicular with respect to the floor of the car.

The goal is to achieve a telg that the car body is connected to the cradle beams by means of connecting links and hydraulic cylinders with servo control. Hard coupling

attached to the cradle and pivotally attached to the body, carried out lateral movement of the latter, and the hydraulic cylinders serve to tilt the body and an angle depending on

centrifugal force acting on the car. In the event that springs are installed between the cradle beam and the hydraulic cylinders, the connecting link is connected to the body by means of a hinged strap.

In this case, it is advisable that the suspension have a constant stiffness, and the angle of inclination is directly proportional to the centrifugal force.

FIG. 1 schematically shows the proposed car in an upright position; in fig. 2 - the same, in an inclined position; in fig. 3 - the same, in a vertical position (option); in fig. 4 - the same, in an inclined position; in fig. 5 - servo controlled

hydraulic cylinders.

The invention is described by the example of a two-axle wagon. Wheel pair 1 is shown by a dash-dotted line, n includes axle, wheels and axle axle boxes.

A frame 2 is mounted on the wheel pair, directly on the axle bushings, to which on the suspensions 3 a lulech beam 4 is hinged and hinged relatively freely along the axis of the wheel pair under the action of centrifugal force. A connecting link 5 is rigidly fixed on the cradle to which the body 7 is attached with the help of axis 6. The axle of the rasaolonsen is below the level of the floor 8 of the car. The body is tilted around its axis 6 by means of hydraulic cylinders 9. The hydraulic cylinders have upper 10, 11 and lower 12, 13 working cavities separated by pistons 14. The cavity 10 is connected to the cavity 13 and the pump 15. The cavity 11 is connected to the cavity 12 and also by pump 15. The latter is controlled by an accelerometer 16. Springs 17 can be installed between the cradle beam 4 and the hydraulic cylinders 9. In this case, the connecting link 5 is connected to the body 7 by means of a swivel link 18. The batteries 19 can also play the role of springs. order to body when passing curved sections of the road, it took the required position, the suspensions with constant stiffness ky move the body by a value a, and the hydraulic cylinders tilt the body at an angle k @, the proportional centrifugal force, where K is a constant of proportionality, which can be greater is equal to or less than 1, and E is the angle of body rotation relative to the center of rotation O located on the axis of symmetry 20. The value of d can be obtained from the equation d M-gKky where M is the mass of 1 joint and the frame; g is the acceleration of the force of gravity. The length of the suspension is determined in the following way (see Fig. 2). When the centrifugal force is equal to the beam is moved to the distance PQ - relative to the oscillation axis of the OP pair PQ / SinQ aTac as in a little, substituting the value PQ in the equation, we get OP - Mg / ky, This equation applies to any form of suspension with linear rigidity k y . For a swinging suspension (see Fig. 2), the lateral stiffness ky is M g / l, where / is the length of the suspension. Hence OR I, with point P located below the floor level of the car. If springs are installed in series with hydrocyli-ndra, then the body may move vertically relative to the beam. Then, axle 6 is placed on rod 18, which is connected by a hinge 21 to a connecting link. Mile 18 allows the body to tilt, but prevents its lateral movement. At the same time, the body will be inclined at an angle less than 9 Beli and the required angle of inclination is equal to / С © and the lateral movement of the beam is equal, then OP Mg@Jky.Sm (KQ,) Mg / Kk, Subject 1. The railway car, including the body, at least one wheel pair located at each end of the latter, frames mounted on wheel pairs, cradle beams connected to the frame by means of suspensions allowing the axial movement of cradles relative to the body, characterized in that, in order to increase passenger comfort by tilting wago. on when saved the position of the center of rotation of the body in the longitudinal vertical plane of symmetry of the car or close to it and above the level of the floor of the body when passing curved track sections, the body of the car is connected to cradle beams by means of connecting links rigidly attached to the cradles and hinged to the body at the point located below the level of its floor to transversely move the latter relative to the frame, and servo-controlled hydraulic cylinders to provide a tilt of the body at an angle depending on the centrifugal force acting on the car. 2. A railway carriage according to claim 1, characterized in that the connecting link is connected to the body by means of an articulated linkage, and springs are mounted between the cage and the hydraulic cylinders. 3. Railway car according to PP-1 and 2, characterized in that the suspension has a constant stiffness, and the angle of inclination of the body is proportional to the centrifugal force.

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