Some typical features which may be incorporated into special hoisting equipment are as follows:
- Extra fast speed/arduous duty combinations.
- Advanced integrated control systems and safety rated control to EN13849 Category 3 PLd.
- Extra large lifting heights.
- Multiple synchronised hoists or multi point lifting from a single hoist.
- Twin hoists roped into a single bottom block and hook for super high lifts.
- Power slewing mechanism in the hoist frame or in the hook block.
- Hoists integrated with grabs and lifting devices.
- Second hoist brake mounted on the hoist motor to ensure safety in the event of primary hoist brake failure.
- Second brake acting on the hoist drum which is applied automatically in the event of over-speed, to ensure safety in the event of failure of any component in the hoist transmission prior to the hoist drum.
- Mechanically failsafe load arrestor based on the worm and wheel principle, which also provides independent over-speed and overload protection with optional load recovery capability for nuclear applications.
- Regenerative braking systems on variable frequency drives.
- Bottom block operated over-hoisting limit switch in addition to the standard rotary limit switch.
- Load Dependent Speed (LDS).
- No Load Express Lift.
- Safe torque off on variable frequency hoist.
- Remote Control with optional LCD status display.
- Micro-speed hoisting and lowering.
- Anti-sway control (prevents traverse movement causing hook swing).
- Slack-rope detection and prevention.
- On board or remote condition monitoring including design working period (DWP).
- Design for use in non standard ambient temperatures -20⁰C to +70⁰C.
- Hoist modifications for lifting hazardous loads such as molten metal.
