Safe operation Is smooth operation. Avoid lumpy and jerky operation, flying starts, quick reversals and sudden stops. Do not move a load over a busy work area without giving warning. Watch out for any unexpected movement or obstructions while a load Is moving. Do not carry passengers or allow anyone to Interfere with a load. [...]

The main purpose of controlling a Gantry crane is transporting the load as fast as possible without causing any excessive sway at the final position. Research on the control methods that will eliminate sway angle of Gantry crane systems has found a great deal of interest for many years. Active sway angle control of Gantry [...]

Crane and Hoist Safety Design Requirements Following are the design requirements for cranes and hoists and their components: The design of all commercial cranes and hoists shall comply with the requirements of ASME/ANSI B30 standards and Crane Manufacturer’s Association of America standards (CMAA-70 and CMAA-74). [COMPANY]-fabricated lifting equipment shall comply with the requirements in Chapter [...]

Practical operation To prevent violent operation, the variable speed drive have a progressive speed setting system which has the effect of optimising acceleration. These speed settings can be adjusted in terms of time and shape (linear, S curves etc.) to suit most applications. The diagram opposite represents the variable speed drive ramps with and without [...]

Crane anti-sway systems come under three main categories: passive systems: cables attached to the load prevent it from swaying, active closed loop systems where the swaying angle is measured with a camera connected to an image processing system, active open loop systems where the information is obtained without additional sensors, from the information available. The [...]