摘要:
An actuator is installed between a vehicle body and a bogie frame of a railroad vehicle mounted with a bolsterless bogie, for example. Sensors are installed in at least one of the vehicle body, the bogie, and the wheelset. One or more parameters having a correlation with a steady lateral force are computed on the basis of state quantities obtained by using the sensors while traveling, to determine a thrust command value to be output to the actuator, by applying a predetermined transfer function to the computed value. Concurrently with determining the thrust command value, one or more parameters having a correlation with a fluctuating lateral force are computed to determine a thrust command value to be output to the actuator, by applying a predetermined transfer function to the computed value. These two thrust command values are combined to determine the thrust output to the actuator. It is possible to effectively reduce the maximum lateral force generated while traveling, thus making it possible to increase the maximum traveling speed.
摘要:
To prevent separation of a truck frame and a wheel axle and to continue supporting a vehicle, even if damage has occurred to a steering device of a steering truck in which front-back support of a steering axle is performed only by a steering mechanism. A railway vehicle steering truck 11 provided with an axle box suspension of a steering axle 2, which is designed to perform support in the front-back direction of an axle box 4 which rotatably supports the steering axle 2, by means of a steering device 3 having a steering link 2a which is rotatably connected to the axle box 4, and a connecting link 3c rotatably connected to a bolster 7, each of these being rotatably connected to a steering lever 3b which is rotatably connected to the a truck frame 6. A stopper 12 to which the axle box 4 comes in contact is installed both on a side where a wheelbase expands and on a side where the wheelbase contracts in the truck frame 6, when a front-back movement of the axle box exceeds a range of front-back movement at a time of maximum steering when the front-back movement of the axle box 4 passes through a minimum curve.
摘要:
The section 100, for use in a rail or tram network, has two sets of steerable wheels 26, 28, 50, 52, each set having two wheels on respective stub shafts or similar supports which are rotatable about vertical axes. The direction of each wheel 26, 28 is determined by the angle between the tram section and a leading or following tram section by means of a mechanical linkage comprising a control lever 106 operating a connecting lever 108 which acts on a push rod 112 and track rods 42. Alternatively, electrical or hydraulic control means are used. A further option is control by a track sensor.
摘要:
The chassis C of the bogie carries two opposed Bissel trucks B1, B2 which, while each supporting one of the two wheelsets of this bogie, are articulated on this chassis C about vertical axes Z. Each Bissel truck is extended, on the opposite side to the wheelset and towards the other Bissel truck, by a head (6a, 6b) bearing an articulation A which controls its pivoting movement. According to the invention, this control articulation A surrounds the pivot (5) of the bogie and is connected, via connecting rods (27), to means (28) detecting the relative angular movement of the bogie C with respect to the chassis V of the vehicle. The means (28) act on the connecting rods (27) in order to pivot the Bissel trucks B1, B2 and to give the geometric axes of rotation G1, G2 of the wheelsets (9) an orientation in which these axes substantially progressively converge towards the centre of the curve of the track.
摘要:
This truck comprises: a) a chassis (5) articulated on the body in a manner that enables it to pivot about a vertical axis; b) on either side of this axis, two transverse structures (8a, 8b) supported by said chassis with the ability to pivot about a vertical axis (14), and c); swing arms (10) supporting, at one of the ends thereof, a wheel (12) independent of the others, each arm (10) being articulated by its other end on a horizontal and transverse axis of one of the transverse structures. According to the invention, the vertical articulation (14) on the chassis (5) of each transverse structure (8a, 8b) supporting the swing arms (10) is joined to or at least near the articulation (4) of this chassis (5) on the vehicle body, whereas each structure (8a, 8b) is associated with assisting, pneumatic or hydraulic means controlled by means that compare a reference geometrical axis of the truck with a reference geometrical axis of the vehicle body.
摘要:
The object of the present invention is to enable connected cars to achieve both good performance while traveling a straight line at a high speed and good performance while traveling a sharp curve at a low speed. In the case of traveling a sharp curve at a low speed, motors of two electromagnetic dampers are connected to a common circuit to convert thermal energy in series. When the connected cars travel along a track in this state, yawing occurs between the cars A and B. In this instance, since the electromagnetic dampers 21 and 22 are shrunk (or extended) by the same amount, the motors rotate in the same direction, and no electric current flows and no damping force is generated. Consequently, there is no resistance to the yawing, and the connected cars perform yawing freely. In the case where hunting occurs, since one of the electromagnetic dampers 21 and 22 is shrunk and the other is extended, the motors rotate in opposite directions. When the motors rotate in opposite directions, electric current flows in the circuit so as to be converted into thermal energy and damping force is generated. Consequently, hunting can be controlled.
摘要:
The invention relates to an arrangement of anti-torsional elements located on running gears of vehicles with a tilting body, which travel on railroad tracks. The inventive anti-torsional element is fixed, by means of one fastening joint thereof, to the side of the running gear facing the center of the body relative to the longitudinal direction, while being fixed, by means of the other fastening joint thereof, to the side of the coach body facing the closest end of the coach body. The fastening joint that is fixed to the coach body is placed higher than or at the same level as the fastening joint which is fixed to the running gear at all times, even at the maximum inclination of the coach body such that a rotational movement of the running gear extends or compresses the anti-torsional element depending on the direction of the curve when the vehicle travels on a curve while a simultaneous inclination of the coach body towards the interior of the curve compresses or extends the anti-torsional element depending on the direction of the curve, resulting in the anti-torsional element not being extended or compressed, or if so, only to a minimal extent. The anti-torsional element is thus permanently operated at the optimal working point thereof.