BS EN 14492-2:2019 pdf free.Cranes – Power driven winches and hoists.
5.1 General Hoists shall comply with the safety requirements and/or protective measures of this clause. In addition, the hoist shall be designed in accordance with the principles of EN ISO 12100 for hazards relevant but not significant, which are not dealt with by this European Standard. Hoists shall be classified in line with EN 13001-1. Replacement of chains and belts during the design life of the hoist may be assumed in the design, in analogy to ropes in accordance with EN 1300 1-3-2. This shall be expressed as a design number of chains or belts used during the total design life of the hoist. The following design parameters shall be documented in the design calculations of a hoist: — rated load, — load distribution, either by average load, load spectrum factor or class Q of load spectrum factor, — number of work cycles, — average vertical load movement in a loaded part of a work cycle, typically sum of hoisting and lowering distances, — average horizontal load movement in a loaded part of a work cycle, where relevant — number of ropes, chains or belts taken for the total design life of the hoist.The above parameters of use (except rated load) may be specified through classification of a hoist. The classification of hoist shall be in accordance with Annex B. A guidance is given in Annex C. Where a hoist class is specified, the S-class for stationary (non-rotating) structural parts can be taken from Table B.3. Hoists shall be designed for loads and load combinations in accordance with EN 13001-2, relevant to the intended use of a hoist. Structural parts of hoists shall be designed for the specified use in accordance with EN 13001-3-1. Alternatively, advanced and recognized theoretical or experimental methods may be used. This includes also the experimental determination of the fatigue strength of special details. In these cases, the reference shall be mentioned. Mechanical and electrical equipment of hoists shall conform to EN 13135 and EN 60204-32, except as otherwise given in this standard.BS EN 14492-2 pdf download.