Integral unit for service brake and fail-safe park brake

A multi-plate disc brake comprising an actuation mechanism, the actuation mechanism comprising:

• an energy storage element configured to apply said disc brake, the energy storage element being movable between a first position where said disc brake is released, and a second position where said disc brake is applied;
• a force transmission path configured to transmit force from the energy storage element to apply said disc brake;
• and
• a hydraulic chamber;
• wherein the force transmission path comprises a first member and a second member arranged in series;
• wherein the hydraulic chamber is configured, when pressurized, to act on the first member such that the energy storage element is moved to the first position;
• and
• wherein the second member is separated from the chamber such that, when the chamber is pressurized, no pressure is applied to the second member.

A working machine comprising a multi-plate disc brake, wherein the multi-plate disc brake comprises an actuation mechanism, the actuation mechanism comprising:

• an energy storage element configured to apply said disc brake, the energy storage element being movable between a first position where said disc brake is released, and a second position where said disc brake is applied;
• a force transmission path configured to transmit force from the energy storage element to apply said disc brake;
• and
• a hydraulic chamber;
• wherein the force transmission path comprises a first member and a second member arranged in series;
• wherein the hydraulic chamber is configured, when pressurized, to act on the first member such that the energy storage element is moved to the first position;
• and
• wherein the second member is separated from the chamber such that, when the chamber is pressurized, no pressure is applied to the second member.