Patent ID: 8201668

Claim:
A device for braking a moving mass, the device comprising: a brake lining; a braking surface; a movably guided coupling element for pressing said brake lining against said braking surface; a brake actuator having a brake cylinder, said brake actuator being filled with hydraulic fluid and connected to said coupling element for generating a pressing-on force to be applied through said coupling element to said brake lining; a pressure transducer to be attached to a frame of the mass to be braked, said pressure transducer having a supporting cylinder filled with hydraulic fluid and a supporting piston interacting with said supporting cylinder; a connecting device connected between said pressure transducer and said brake lining; hydraulic lines communicating between said supporting cylinder and said brake cylinder; and a regulating device setting a braking force as a function of a predefined setpoint value; said supporting cylinder is divided into a supporting chamber and a supporting return chamber by said supporting piston; said regulating device is configured to regulate a difference in pressure between hydraulic pressure in said supporting chamber and hydraulic pressure in said supporting return chamber; said regulating device including: a pressure detection device for detecting a pressure difference value Δp; a difference generator to generate the absolute value from the pressure difference as an actual value Δp abs ; a comparator for comparing a predefined setpoint value Δp setp with said actual value Δp abs by acquiring a difference value ΔF; a regulating unit; and a brake valve for setting a pressure of the hydraulic fluid in said brake actuator, said regulating unit acting on said brake valve to minimize said difference value ΔF; said hydraulic lines including a fluidic high pressure circuit and a fluidic low pressure circuit communicating with said brake valve.