Variable-torque emergency brake device
AssigneePoclain Hydraulics Industrie
InventorsJean HEREN, Andre PRIGENT
Life of this patent
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Abstract
The invention relates to 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), characterized in that the discharge circuit (4) comprises means (13, 14) for controlling the pressure and/or flow rate of the supply fluid of the actuator (2) during a discharge of the actuator, these control means (13, 14) being 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).
The braking device according to any one of the preceding claims, characterized in that the pressurizing circuit (3) of the fluid comprises a pump (10) and a pressure restrictor (11).
The braking device according to any one of the preceding claims, characterized in that it comprises a distributor (6) configured to assume at least two positions, a first position configured to supply the actuator (2) with pressurized fluid and a second position configured to discharge the actuator (2).
The braking device according to any one of the preceding claims, characterized in that it comprises at least one counter-pressure supply sprinkler (12) configured to supply the chamber (19) of the actuator (2) with fluid.
A rotary machine comprising a braking device according to any one of the preceding claims.
Dependencies are inferred from the claim text.