Variable-torque emergency brake device
AssigneePoclain Hydraulics Industrie
InventorsJean Heren, Andre Prigent
Life of this patent
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Abstract
An emergency braking device including an actuator (2), a pressurizing circuit (3) supplying the actuator (2) via a control pressure and a discharge circuit (4). The discharge circuit (4) includes restrictors (13, 14) for controlling the pressure and/or flow rate of the supply fluid of the actuator (2) during a discharge of the actuator. The restrictors (13, 14) are configured to define an intermediate pressure between a low pressure level and the control pressure of the actuator (2).
Claims17
An emergency braking device comprising an actuator (2), a pressurizing circuit (3) supplying the actuator (2) via a control pressure and a discharge circuit (4) comprising means (13, 14) for controlling the flow rate of the supply fluid of the actuator (2), during a discharge of the actuator (2), characterized in that the control means comprise a discharge flow restrictor (13) and a counter-pressure pressure restrictor (14) configured to define an intermediate pressure between a low pressure level and the control pressure of the actuator (2)), wherein the device comprises at least one counter-pressure supply nozzle (12) configured to supply a chamber (19) of the actuator (2) with fluid, and the supply nozzle (12) supplies the chamber (19) of the actuator by means of a chamber containing brake discs (7).
An emergency braking device comprising an actuator (2), a pressurizing circuit (3) supplying the actuator (2) via a control pressure and a discharge circuit (4) comprising means (13, 14) for controlling the flow rate of the supply fluid of the actuator (2), during a discharge of the actuator (2), wherein the control means comprise a discharge flow restrictor (13) and a counter-pressure pressure restrictor (14) configured to define an intermediate pressure between a low pressure level and the control pressure of the actuator (2), wherein the device comprises at least one counter-pressure supply nozzle (12) configured to supply a chamber (19) of the actuator (2) with fluid, and the supply nozzle (12) is connected to an assembly comprising the discharge flow restrictor (13) and the counter-pressure pressure restrictor (14) placed in parallel on the discharge circuit (4).
Dependencies are inferred from the claim text.