Rail vehicle having tilting technology

Abstract

A rail vehicle having tilting technology includes a car body supported on at least two chassis. At least one of the chassis is connected to the car body by an active tilting technology system and at least one additional chassis is connected to the car body by a passive tilting technology system. The tilt of the car body is applied exclusively by the active tilting technology system. Thus, uncontrolled twisting and loading of the car body is avoided.

Claims

1. A rail vehicle having tilting technology, the rail vehicle comprising: a car body; at least two chassis supporting said car body; at least one active tilting technology system each respectively connecting at least one of said chassis to said car body; and at least one passive tilting technology system each respectively connecting at least a further one of said chassis to said car body; said at least one active tilting technology system and said at least one passive tilting technology system both being present without failure of said at least one active tilting technology system.

2. The rail vehicle according to claim 1, wherein: said car body has a center of gravity; and said at least one further chassis connected to said car body by said passive tilting technology system has an instantaneous center being situated as close as possible to said center of gravity of said car body in every tilted state of said car body.

3. The rail vehicle according to claim 2, wherein said instantaneous center is situated in said center of gravity of said car body.

4. The rail vehicle according to claim 1, wherein: said car body has a center of gravity defining a line of action of the force of gravity through said center of gravity of said car body; and said at least one chassis connected to said car body by said at least one active tilting technology system has an instantaneous center lying next to said line of action in every tilted state of the car body.

5. The rail vehicle according to claim 1, which further comprises rollers running in roller tracks and pivotably supporting said car body on said at least one further chassis connected to said passive tilting technology system.

6. The rail vehicle according to claim 1, which further comprises a pendulum mechanism pivotably connecting said car body to said at least one chassis connected to said at least one active tilting technology system.

7. The rail vehicle according to claim 1, which further comprises rollers running in roller tracks and pivotably supporting said car body on all of said chassis connected to said at least one passive tilting technology system and on all of said chassis connected to said at least one active tilting technology system.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) The invention is explained in greater detail with reference to exemplary schematic figures in which:

(2) FIG. 1 shows an inventive rail vehicle having tilting technology;

(3) FIG. 2a shows a view of an inventive rail vehicle in the section A;

(4) FIG. 2b shows a view of an inventive rail vehicle having a tilted car body in the section A;

(5) FIG. 3a shows a view of an inventive rail vehicle in the section B; and

(6) FIG. 3b shows a view of an inventive rail vehicle having a tilted car body in the section B.

DESCRIPTION OF THE INVENTION

(7) The rail vehicle 1 illustrated in FIG. 1 has a first chassis 3 and a second chassis 6. A car body 2 having a longitudinal axis 15 is supported on the chassis 3, 6. The second chassis 6 is connected to the car body 2 via an active tilting technology system 4, and the first chassis 3 is connected to the car body 2 via a passive tilting technology system 5. When the rail vehicle 1 travels through a curve, the tilt of the car body 2 is applied exclusively by means of the active tilting technology system 4. The chassis 3 having the passive tilting technology system 5 follows the movements of the active tilting technology system 4, but does not include any devices or actuators for the purpose of actively assisting a tilt of the car body 2.

(8) FIG. 2a illustrates the rail vehicle 1 in the section A. The car body 2 is pivotably supported, by means of rollers 7 running in roller tracks 8, on the first chassis 3 having the passive tilting technology system 5. The car body 2 can pivot about the instantaneous center P. The chassis 3 does not include any devices for actively assisting the tilt of the car body 2. The rail vehicle 1 is illustrated in an untilted state, i.e. the horizontal basic state. The roller tracks 8 are tilted in different directions, such that their extensions intersect at a point in the same way as the limbs of a V. The rollers 7 and the roller tracks 8 are so arranged as to be essentially symmetrical relative to the longitudinal axis 15 or to a vertical plane through the longitudinal axis 15 of the car body 2.

(9) FIG. 2b shows the rail vehicle 1 having a tilted car body 2, again in the section A. The car body 2 is pivotably supported, by means of rollers 7 running in roller tracks 8, on the first chassis 3 having the passive tilting technology system 5. The car body 2 can pivot about the instantaneous center P. In comparison with the illustration in FIG. 2a, the car body 2 is tilted in the first tilt direction 16, and is therefore in the tilted state. The position of the instantaneous center P does not change during the tilting process of the car body 2its position therefore coincides with the instantaneous center P in every tilted state of the car body 2. The instantaneous center P is the axis of rotation of the car body 2 in the tilted state at an angular instant. The passive tilting technology system 5 has an instantaneous center P which is preferably situated in the center of gravity S of the car body 2 in every tilted state of the car body 2. In this case, the force of gravity does not exert any righting moment which returns the car body 2 back to the horizontal basic state due to the force of gravity. The tilted state of the car body 2 can only be returned to the basic state again by means of external dynamic effect.

(10) The tilt of the car body 2 is applied solely by the second chassis 6 having the active tilting technology system 4.

(11) FIG. 3a illustrates the rail vehicle 1 in the section B. The second chassis 6 is connected to the car body 2 via the active tilting technology system 4. The active tilting technology system 4 is designed as a pendulum mechanism in this embodiment variant. The pendulum mechanism comprises two carrier elements 9, which are connected to the floor of the car body 2. The carrier elements 9 have first joints 10, which provide a rotatably mobile connection to pendulum elements 11. At their ends which are opposite to the first joints 10, the pendulum elements 11 are connected in a rotatably mobile manner via second joints 12 to a cross-member 13. The cross-member 13 is connected to the second chassis 6. Either the carrier elements 9 can be rigidly connected to the car body 2 or the cross-member 13 can be rigidly connected to the second chassis 6. Actuators 14 are provided between the cross-member 13 and the carrier elements 9, and effect the tilting of the car body 2 about the instantaneous center P.

(12) FIG. 3b shows the rail vehicle 1 in the section B, now in a tilted state. The second chassis 6 is connected to the car body 2 via the active tilting technology system 4. The car body 2 is tilted in the second tilt direction 17, and is therefore in the tilted state. During the tilting process of the car body 2 in the second tilt direction 17, the instantaneous center P moves from P to P on a curve 18. In every tilted state of the car body 2, the instantaneous center P of the active tilting technology system 4 lies next to the line of action of the force of gravity through the center of gravity S of the car body 2. A righting moment which is conducive to the horizontal basic state of the car body 2 therefore occurs in every tilted state.

(13) This ensures that, if the active tilting technology system 4 fails, the car body 2 is automatically moved from the tilted state into the horizontal basic state due to the effect of the force of gravity.

(14) The car body 2 may also be pivotably supported, by means of rollers 7 running in roller tracks 8, on all chassis 3, 6 having a passive tilting technology system 5 and on all chassis 3, 6 having an active tilting technology system 4.

(15) Such supports have the advantage of exhibiting very little rolling resistance. In comparison with the prior art, it is therefore possible to use smaller, less powerful and more economical actuators 14 on the chassis 6 having the active tilting technology system 4, said actuators 14 moving the car body 2 from the tilted state to the horizontal basic state and vice versa.

(16) Using the inventive rail vehicle 1, the tilt of the car body 2 is applied exclusively by means of the active tilting technology system 4. This avoids uncontrolled twisting and loading of the car body 2.

(17) The inventive solution is not restricted to the cited examples, and other embodiments are also possible.

LIST OF REFERENCE SIGNS

(18) 1 Rail vehicle 2 Car body 3 First chassis 4 Active tilting technology system 5 Passive tilting technology system 6 Second chassis 7 Rollers 8 Roller track 9 Carrier element 10 First joint 11 Pendulum element 12 Second joint 13 Cross-member 14 Actuator 15 Longitudinal axis 16 First tilt direction 17 Second tilt direction P Instantaneous center in the horizontal basic state P Instantaneous center in the tilted state S Center of gravity