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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Special loads occur during operations on such rare occasions that there is no need to take them into consideration with regard to the service life of the respective driving mechanism parts. Hoses shall not be used to support hydraulic components or other equipment. The types of indicators or warning devices or combination thereof applicable to various types of cranes are specified in the appropriate part of AS Forces parallel with runway beams are very small and can be disregarded.

Contactors and motor starters all parts Part 5. Dry friction clutches shall be protected against rain and other liquids such as oil and lubricants. The minimum driven wheel loads of the unladen crane shall be used to calculate the maximum traction forces. Where, because of the redundancy of the continuity and moment capacity noted above, a member could be removed without occasioning the structure to cease its intended service, and such removal or loss could be evident in a casual inspection, the structure is fail-safe.

The maximum total duration of use may be derived from the assumed average daily utilization time in hours, the number of working days per year, and the number of years of expected service.

Where mechanisms are duplicated for safety reasons, failure shall be assumed to occur in any part of either system. For the determination of this force, the crab shall be assumed to be in the worst position. C Other interlocking systems given in AS Each load group is divided into load categories as shown in Table 7. In so far as high speed appliances are concerned, the best solution is to butt-weld the rails, in order to eliminate entirely the shock loadings that occur when an appliance runs over joints.

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Gravitational, inertial, in service wind, friction forces and mechanism efficiency shall be taken into account. Such sheave enclosures shall not prevent the wound condition of the wire rope on the sheave from being viewed.

The resulting lateral force P HB due to the eccentricity ls of the centre of the drive force with respect to the centre of mass is assumed to be distributed equally to 1418.11 applicable travel wheels. In some hazardous environments, fire-resistant hydraulic fluids are required.

Appropriate warning notices shall be displayed. Provisions shall be made to prevent occurrence of any fault that may cause injury to persons either directly or indirectly, or cause damage within or outside the crane by inadvertent crane motion with the switch in any position. 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.

Standards Catalogue

A, if tinted glass is used, it shall be only lightly tinted so that the vision of the crane operator is not impaired during night operation. Requirements for electrical equipment for use in hazardous areas are found in AS all parts, as applicable.

Where a crane of mass m and having a velocity V collides with an end stop, the kinetic energy released on collision shall be calculated by the following equation: Installations that are supplied by sliding contact conductors shall include a separate earthing conductor or other positive earthing means that does not require earthing through the crane wheels.

Means shall be provided to monitor each brake, to verify its condition and operating status. A visible and audible alarm shall be installed to indicate a fault in the system. A distinct and readily visible indicator, e.

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It is self evident that a single component cannot fail-safe. An allowance shall be made for any increased hook load due to the most unfavourable angle of pull.

All plugs and similar components used for this purpose shall be keyed or clearly identified to prevent connection in any other than the intended manner.

Phase sequence relay protection shall be incorporated in the crane control preventing the use of equipment in the case of an incorrectly phased power supply. The 4118.1 switch circuit shall be effectively designed to prevent contact welding. They are to be calculated according to the following equations from the maximum stresses see Clauses 7.

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The terminal ends of the cable shall be anchored at a suitable insulator in a manner that prevents any physical load from being placed on the electrical terminals or connections. In the selection of the means of overtemperature protection, it should be noted that a thermal overload relay may not fully protect some classes of crane motors for the load cycles usually encountered in the crane application and, therefore, other protective means may be required.

Where tension springs are used, two such springs shall be provided and the stresses shall not exceed ae for compression springs. Reissued incorporating Amendment No. The maximum rope tension has been established as 79 kN. An isolating switch with overload protection in all lines shall be provided to isolate all supply lines to the magnets.

AS /Amdt – Cranes, hoists and winches – General requirements (FOREIGN STANDARD)

A magnetic plug may be fitted to the reservoir to aid removal of ferrous particles. The nominal values of the load spectrum factor K p shall comply with Clause 2. Specific requirements for vaporizing-liquid type extinguishers Industrial fall-arrest systems and devices set Safety glass for land vehicles The changeover from the normal supply to the battery shall be automatic and in a fail-safe manner, and in such a way that a maximum load shall not be dropped owing to a power failure of a normal supply.

Depending on the risk assessment of the application, it may be necessary to exceed the minimum safety requirements described herein. A failure of a discrete or integrated circuit component shall not cause an unsafe condition.

Conductors used for connection to electronic devices, such as encoders and PLCs, can use a smaller wire gauge conductor. 118.1 cables and termination points shall be effectively az against mechanical damage.