AS 1418.1 PDF

Specifies general requirements for cranes as defined in AS Includes the design of cranes by the traditional working stress method and. AS Cranes, hoists and winches – Part 1: General requirements. View on Information Provider website {{ linkText }}. Abbreviation. AS . Visit our website and learn more about AS standards.

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Helmut Ernst, published in Mitt. Each cordless control system shall have a unique address code. Where the cabin is naturally ventilated, windows or vents in at least 11418.1 sides of the cabin shall be capable of being operated.

It is necessary to know the value of the drum-shell thickness T D to calculate drum-shell stresses. The maximum value of M Au from one of the following equations shall apply: Insulators shall comply with AS The information in this Appendix is drawn from DINfor general guidance on groove profiles for wire rope sheaves.

Drum groove profiles shall fall within permissible deviations governed by nominal rope diameters given in Table K1. Complete wiring diagrams of the system or systems in the control panelswhich should include schematics, panel layouts, connection diagrams, cable schedules, equipment layouts or any other information that may be necessary to allow safe and efficient maintenance and fault rectification to be carried out.

Overload protection of motors can be achieved by the use of devices such as fuses, circuit-breakers, temperature-sensing devices, or current limiting devices, Electronic devices designed to reduce or limit the current in protected devices may also be used.

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When operated, mechanically operated limit switches that control three-phase motors shall cause interruption of two or three active-supply conductors of the motor circuit. Where a motion can be either manually operated or power operated, interlocking shall be provided to prevent simultaneous engagement of both manual and power operation.

To maintain their currency, all Standards are periodically reviewed, and new editions are published. Hoses shall not be used to support hydraulic components or other equipment.

The effects of adjacent spans on cantilever deflection have to be taken into account in calculating cantilever deflection. The effect of eccentricity of the resultant traction forces to the centre of mass of the driven system shall be considered. The number of loading cycles is often significantly higher than the number of in-service cycles in Table 2.

Special equipment, such as lifting magnets, may be isolated separately from the crane provided that all main isolators are located together and clearly marked.

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Pendent stations, hose runs, hose coils and the like shall be supported in a manner that protects the items or any 1418.1 components against strain or damage by impact.

In environmentally sensitive locations, biodegradable hydraulic fluids should be considered. Live loads on walkways during maintenance shall be determined in accordance with AS unless higher loads can be generated, for example, placement of equipment on walkways during maintenance.

AS – Standards Australia

Where the atmosphere contains gas or vapour, the air supply shall be treated by an adsorption or other appropriate device. In some applications it may be necessary to also consider occasional loads such as in-service wind, skewing and exceptional loads such as test loads and excitation of the lifting appliance foundation for example, wave effects.

Failure of any relay or contactor or any other control device shall not result in the unsafe operation of any part of the system. Whole-current isolation of the motor circuits of a lockable type shall also be provided at the switchboards.

Reservoirs should be located to facilitate cooling. A failure of a discrete or integrated circuit component shall not cause an unsafe condition. Where motors with special duty ratings are called upon to brake frequently e. Unless the section isolator is adjacent to the main isolator, the location of the main isolator shall be clearly indicated near the section isolator.

Selection of such ropes shall be made in accordance with Clause 7. Other special profiles are used for particular specialized applications. Where it is intended that the crane be parked and secured with special stabilizing devices, the crane and the stabilizing devices shall be checked for their structural adequacy under design wind load as specified in Section 4. These bolts can be either a through bolt on the top flange of the runway girder, or integral with the clamp base plate which, in turn, has been welded to the girder top flange adjacent to the rail.

External leakage from components, tubing and similar shall be kept to a practical minimum. However, for a system devised to be fail-safe, if one of its components fails and the failure of that component is not able to be readily detected, the system does not achieve failure to safety and the probability of the failure of the system becomes equal to that of the probability of failure of the next most critical component.

Sliding contact power supply systems shall be suitably marked in accordance with the requirements of AS Three types of special loads that should be taken into consideration are out of service wind, buffer forces and emergency shutdown or power failure. In certain systems of this type, it is not possible to determine which is the primary and which is the secondary system, and the designer and manufacturer should provide full explanatory information to the user so that those responsible have a good understanding of the operation and service requirements of the total system.

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The four nominal values of load spectrum factor Kp shall be as shown in Table 2. Oblique travel causes, in the instant of contact between the rail and the front guiding element wheel flange or guide rollera contact 14418.1 P OT that tends to straighten the crane on its runways. The type of connection shall not produce any non-permissible stresses on the gears. Hot-rolled bars and sections Shank hooks and large-eye hooks—Maximum 25 t Hydraulic hose Effects ae current passing through the human body Mechanical equipment—Steelwork Where cordless controlled cranes operate on a common runway, anti-collision protection shall be provided.

Except for automatic brakes, each brake shall have means for maintaining the applied condition other than by continued application of the in service force. It does not include powered industrial trucks as defined in AS The welding process used for joining rails shall take into account— a the rail material specification; b appropriate pre-weld heating and post weld cooling; c the effects of weld shrinkage on the rail system; and d surface 1418. of the welded joint, to minimize dips developing in the joint during service.

Appropriate jigs and fixtures shall be utilized during the manufacturing process, as applicable, to assure satisfactory alignment of components as specified by engineering drawings. L5 2 where the drum-shell material has its tensile strength significantly different from its compressive strength: For cranes with booms, wind loads shall be considered in fatigue calculations.

Interpolation of K O values is permissible under this Standard.

1418.1-2002(+A1)

Where a crane of mass m and having a velocity V collides with an xs stop, the kinetic energy released on collision shall be calculated by the following equation: In general, considerable test data is required for the following: 4118.1 wire and flexible cables shall be supported to ensure compliance 1481.1 this Clause see also Clause 8.

Loads suspended from hoisting equipment and freely swinging loads need not be taken into consideration. The interlocking system should include the considerations outlined in AS Each brake shall have an effective range of automatic torque adjustment to compensate for wear to maintain braking efficiency during periods of time between normal servicing.

On occasions, they are influenced more unfavourably by a different distribution of the dead load than when operating.