Abstract： AS 5227.1:2021 pdf download.Cranes- Requirements for mechanisms Part 1: General (IsO 10972-1:1998,MOD). — displacement of the structure supporting the mechanism; — avoidance of uncontrolled motions considering the limits of transmission...

AS 5227.1:2021 pdf download.Cranes- Requirements for mechanisms Part 1: General (IsO 10972-1:1998,MOD).

— displacement of the structure supporting the mechanism;

— avoidance of uncontrolled motions considering the limits of transmission of force or moments, when provided For example by

motors, clutches, brakes;

— avoidance of undesirable or excessive vibrations;

— avoidance of excessive noise emissions;

— ease of use and controls of the mechanism with adequate space and motion limiters and indicators;

— recommendations of the component supplier for the selection and installations of component parts;

— serviceability. i.e. easy accessibility for maintenance of components (see ISO 11660-1);

— interchangeability of components:

— availability of lifting lugs or lifting points for handling;

— access for operator or maintenance personnel. see ISO 11660-1;

— environmental conditions and hazards.

4.1.2 Criteria for strength of components

When selecting the components of the mechanisms, it shall be verified that the applicable loading conditions in terms of maximum

loading, load spectrum and number of load cycles comply with the corresponding rated characteristics of the components.

4.2 Power

The power mechanism shall be an electrical, hydraulic or pneumatic motor or an internal combustion engine.

The crane mechanism shall have sufficient power and torque to control the motions under the specified design conditions.

Gravitational, inertial. in-service wind, friction forces and mechanism efficiency shalt be taken into account.

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