Railway vehicle comprising an emergency braking device
AssigneeAlstom Transport Technologies
InventorFrederic Hallonet
Life of this patent
Estimating the term…
Abstract
A railway vehicle, including an emergency braking device including at least one brake module, wherein each module includes a contact element intended to be in contact with the ground at the moment of braking, and movable between a retracted position and a deployed position in which the contact element is in contact with the ground and is able to slow down the moving railway vehicle by applying a pressure force to the ground, and at least one control unit that is capable of communicating commands to the brake module, wherein the control unit is able to communicate to the brake module the command to deploy the contact element to its deployed position when at least a portion of the vehicle leaves the track on which the vehicle is traveling.
Claims15
A railway vehicle extending in a longitudinal direction and intended to run on a railway track, comprising:
- at least one body;
- and
- an emergency braking device, comprising:
- at least one brake module, each brake module comprising a contact element that is intended to be in contact with the ground at the moment of braking, wherein the contact element may be moved between a retracted position in which the contact element is not in contact with the ground, and a deployed position in which the contact element is in contact with the ground and is able to slow down the railway vehicle by applying a pressure force to the ground;
- and
- at least one control unit that is capable of communicating commands to said at least one brake module to deploy said at least one contact element to its deployed position, when at least one portion of the railway vehicle leaves the track on which the railway vehicle is traveling, the control unit comprising:
- a sensor measuring the longitudinal acceleration of the railway vehicle;
- and
- a calculator of the derivative of the longitudinal acceleration, wherein the control unit is able to control the pressure force on the ground of said at least one brake module with respect to the acceleration and the derivative of the acceleration in the longitudinal direction.
A railway vehicle intended to run on a railway track, comprising:
- a plurality of cars, wherein each car comprises at least one brake module, each brake module comprising a contact element that is intended to be in contact with the ground at the moment of braking, wherein the contact element may be moved between a retracted position in which the contact element is not in contact with the ground, and a deployed position in which the contact element is in contact with the ground and is able to slow down the railway vehicle by applying a pressure force to the ground;
- and
- at least one control unit that is arranged to deploy each said contact element from the retracted position to the deployed position, when at least one portion of the vehicle leaves the track on which the vehicle is traveling, so that the pressure force on the ground of each said brake module decreases from the rear of the vehicle towards the front of the vehicle.
Dependencies are inferred from the claim text.