A hydraulic lowering device for a safety brake of lifting equipment includes a fluid reservoir (1), a fluid outlet port (18), a pressurized fluid accumulator (2), a pump (3, 3′) connected to the fluid reservoir for injecting pressurized fluid from the fluid reservoir into the pressurized fluid accumulator, and a three-way pressure regulator (4) including a mechanical control input, actuated via a handwheel (5), for setting a setpoint value, a fluid inlet connected to the pressurized fluid accumulator (2), a fluid outlet connected to the fluid outlet port (18), and a drain connected to the fluid reservoir (1). The three-way pressure regulator (4) enables precise and completely safe control of the release, reinforcement and attenuation of braking. The dissociation between establishing, by pumping, a reserve of energy into the pressurized fluid accumulator (2) and controlling the lowering via the three-way pressure regulator (4) facilitates control.
Manually Operated, Hydraulic Lowering Device for Lifting Equipment
2025-05-29
Patent
Electronic Resource
English
IPC: | B66D Haspeln , CAPSTANS |
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