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Drum brake provides failsafe safety for rope hoist users

EMH offers the SureStop™ drum brake, which serves as an optional failsafe safety device for the EMH Wire Rope Hoist, stopping loads when monitored parameters exceed safe operating condition limits. Overspeed, load-slip at standstill, and sheared shaft conditions are monitored continuously. The drum brake also can be configured as a second mechanical brake.

This emergency device prevents uncontrolled lowering of the load in the event of a failure, but it is not intended as a service brake. It offers users an additional failsafe device if the motor service brake fails, if one or more of the drive transmission components fails, or if a drum brake component fails. The unit is suitable for situations in which critical lifts are necessary, including people lifts and molten metal lifts.

The drum brake combines an encoder, a ratchet/pawl mechanism, and an electrical overspeed system control.