Järnvägar

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

This European Standard provides an accepted "terminology" for switch and crossing work. With the assistance of diagrams, the various components are given definitions, and these specific names are regarded as obligatory.

The definitions cover the constituent parts and design geometry of switch and crossing work, and include the movement of switches. Additional terminology of a more specific nature will be defined in the relevant part of the series.

The present definitions set out the terms most generally used for the geometrical form and the construction of switches and crossings, omitting those of too special a nature.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

This document covers the following subjects:

— the design process for switches and crossings, and the use of the other parts of this standard;

— geometric design principles for wheel guidance;

— definition of basic limits of supply;

— applied forces and their adequate support;

— tolerance levels.

These are illustrated herein by application to a turnout. The main switch and crossing components are represented in turnouts and the principles used in turnouts apply equally to more complex layouts.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
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This document defines the main wheel/track interaction criteria to be taken into account during the geometrical design of switches and crossings (S&C) layouts.

It specifies:

— characterization of wheel and track dimensions;

— geometric design principles for wheel guidance;

— design principles for wheel load transfer;

— whether movable crossings are needed.

These are illustrated by their application to turnout components:

— switches;

— crossings;

— check rails,

but the principles apply equally to more complex layouts. There are also simplified definitions of the safety and functional dimensions, which can be used in conjunction with the general principles as the basis for more in-depth assessment.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

This document determines the interface between moveable parts and the actuation, locking and detection equipment, and defines the basic criteria for switches and crossing with moveable parts in respect of the interface.

It concerns:

— rules, parameters and tolerances for alternative positions of the moveable parts;

— criteria and limits for the forces which move and restrain the moveable parts.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
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The scope of this document is to:

— establish a working definition for switches and their constituent parts and identify the main types;

— specify the minimum requirements for the manufacture of the switches and/or constituent parts;

— specify codes of practice for inspection and manufacturing tolerances of both full and half sets of switches and their constituent parts;

— establish the limits and scope of supply;

— list the methods by which switches and their parts should be identified and traced;

— list the different and varying ways by which switches can be described using the following parameters:

— geometry of the switches;

— types of construction;

— performance requirements;

— design criteria;

— tolerances and inspection.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

The scope of this document is to:

— establish a working terminology for fixed crossings and their constituent parts, and identify the main types;

— specify the different and varying ways by which crossings can be described using the following parameters:

— geometry of the crossing;

— types of construction;

— design criteria;

— manufacturing processes;

— tolerances and inspection.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

The scope of this document is:

— to establish a working terminology for crossings with moveable parts, which means crossings with moveable parts to close the gap of the running edge, and their constituent parts, and identify the main types;

— to list the minimum requirements for the manufacture of crossings with moveable parts and/or their constituent parts;

— to formulate codes of practice for factory inspection and tolerances for crossings with moveable parts and/or their constituent parts;

— to establish the limits and extent of supply;

— to list the method by which crossings with moveable parts and their constructional parts should be identified;

— to list the different and varying ways by which crossings with moveable parts can be described, using the following parameters:

— geometry of crossings;

— types of construction;

— performance requirements;

— design criteria;

— tolerances and inspection.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

This document covers the following subjects: to establish a working terminology for expansion devices, for their constituent parts and for the types; to specify the minimum manufacturing requirements for expansion devices and their constituent parts; to formulate codes of practice for inspection and tolerances; to define the method by which expansion devices and their parts should be identified.

Kommittébeteckning: SIS/TK 254 (Järnvägar)
Källa: CEN
Svarsdatum: den 2 apr 2020
Se merSe mindre
 

This document is to:

— define the geometrical and non-geometrical acceptance criteria for inspection of layouts assembled whether in the fabrication plant, or trackside in the case of layouts that are delivered as components, part assembled or in "kit" form;

— determine the extent of supply;

— define the minimum requirements for traceability.

This document applies only to layouts that are assembled in the manufacturing plant or that are assembled for the first time at trackside.

Other aspects such as installation and maintenance also influence performance; these are not considered as part of this standard.