DIN Cranes; steel structures; verification and analyses. standard by Deutsches Institut Fur Normung E.V. (German National Standard). DIN (EN – Version ) – Download as PDF File .pdf), Text File .txt) or read online. Find the most up-to-date version of DIN at Engineering
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The six loading groups, B 1 to B 6, are correlated to specific ranges of the stress cycles and to specificstress collectives in accordance with subclause 7.
Unless a more accurate calculation is made, Ki shall be 150181- proportionally between both sides of the craneway without considering any inertia force effects or any skidding of the driven track wheels see figure 6. For cranes with a total of n pairs of track wheels arranged each on an axis i, and of which m are speed-synchronized, and whose wheel loads R I i on side 1 and R2 i o n side 2are of equal magnitude respectively for each side, and assuming the usual tolerances for track wheel diameter, axial parallelism of track wheel bores and position of the runway, with a linearized frictional contact relationship applying equally to longitudinal and transverse slip, the following applies: The above loads are 15018–1 into load cases in clause 5.
DIN (EN – Version ) – Free Download PDF
Where lateral forces due to inertia forces act transversely to the runway, they shall be absorbed by the rails through positive and frictional contact in accordance with the systems adopted for the supporting structure and the running gear, and in accordance with the type of guiding means used.
The distribution 150118-1 the force S resulting from the skewing of cranes with flanged track wheels is similar to that described in subclause 4.
In the case of rope controlled jibs, these negative inertia force effects are limited by the slackening of the ropes, whereby an upward movement of the jib becomes possible. As far as the supporting structure is concerned, e. Thereafter, the remainder of the load making it up to the large test load shall be attached with all due care, so as to avoid any oscillations if possible.
The softer the springing of the hoisting gear, the larger the elasticity of the supporting structure, the smaller the actual hoisting speed at the commencement of the hoisting of the useful load, the smaller and steadier the acceleration and deceleration during changes in the hoisting motion, the smaller the factor. Accordingly, the cranes are classified into lifting classes H 1H 2, H 3 and H 4, with different factors p as given in table 2 below. In cases where is less than -1, shallbe entered at a value of Angle cleats shall be connected with the structure either taking 1 3 times thevalue oftheapplicable proportion of the stress resultant for one leg and the given value itself for the other leg, or taking 1,25 times the value for both legs.
YI i and X2i.
DIN 15018-1 (EN – Version 11-1984)
In cases where there is a considerable amount dln play between structural members hereinafter briefly referred to as members which move relatively to one another, for example in the case of the rigid mast and the suspension gear of a stripper crane, a factor larger than 1,5 shall be used. The most widely used types of welds are classified in table 24 of subclause Alignment of 150118-1 Unless the crane operator has specified anything to the contrary, the calculation shall be made on the assumption Copyright Deutsches Institut Fur Normung E.
Please help us to share our service with your friends. The principal corrections, including those which have arisen from the processing of the comments received, are described in the Explanatory notes.
We need your help! Other values of the skew angle a shall be agreed. Verification of the safety against bulging of lates shall also be carried out in accordance with DIN art 1 and Part 2, but in lieu of the factors of safety, vB. Imposed loads shall be entered in the calculation of the members concerned at the most unfavourable positions, values and directions. See clause 9 for permissible tensile 15108-1 on prestressed bolts. Not for Resale i: In the case 1508-1 fillet welds subjected to compressive loading in the direction normal to the weld, such as between web plate and flange plate, no allowance shall be made for contact between the members to be joined.
XR R is the sum of all wheel loads arising from self weights System Position h of the slip pole and factor A. Elastic deformations, required for the calculation of statically indeterminate structures for example, shall be determined on the basis of cross-sectional values without any deduction 51018-1 holes.
The dkn forces shall be distributed in accordance with the buffer characteristics and the possible movements of the supporting structure. DIN Part 3 Fasteners; technical delivery conditions; property classes for carbon steel and alloy steel bolts and screws; conversion of property classes DIN Part 1 Welded carbon and low alloy steel pipes for supply purposes, process plant and tanks; general specifications, survey, recommendations for use DIN Part 2 Welded carbon and low alloy steel pipes for supply purposes, process plant and tanks; pipes for general use commercial quality ; technical delivery conditions Part 3 Welded carbon and low alloy steel pipes for supply purposes, process plant and tanks; pipes subject to special requirements; technical delivery conditions DIN Part 4 Welded carbon and low alloy steel pipes for supply purposes, process plant and tanks; high performance pipes; technical delivery conditions DIN Part 1 Seamlesscarbon steel tubesfor supply purposes, process plant and 150181 survey, technical delivery conditions: Individual self-contained parts of a crane forming integral parts of the complete unit, such as the trolley and the crane bridge or jib, the slewing unit, portal and tower, may be classified into different lifting classes within the limits defined in table 23 for the various types of crane, provided the hoisting conditions are fully known.
Dimensions and forces due to skewing of a crane with four pairs of track wheels representing different system characteristics 4. No such verification need be made for design purposes in respect of subordinate components such as walkways, stairways, platforms, hand rails and cabins. Trolley travel Ka 4.
Transverse stiffenings shall be arranged at spacings not exceeding 10 x r, whose moment 15018–1 inertia 1,calculated in accordance with DIN Part 2 February x editionRi The four stress collectives, So to SJ, denote the relative cumulative frequency with which a specific maximum stress u, is attained or exceeded.
Thank you for interesting in our services. In normal cases, the following fasteners shall be used: Provided by IHS under license with DIN No reproduction or networking permitted without license from IHS Not for Resale based on the condition that the driving forces acting on the crane are practically free from backlash. Example of the distribution of forces due to tilting of a crane trolley with positive guidance of the lifted load in the direction of crane travel 4.
An appropriate substitute mass shall be entered in the calculation in lieu of that of the rotating parts of the running gear.
Instead of adopting a precisely com4. Where these forces are transmitted through the trackwheels, and where there are more than two wheels per runway side, they 1501-1 be uniformly distributed between the outer wheels or outer wheel groups as shown in the examples illustrated in figure 4.
The forces which arise from the subsequent falling back of the jib shall be taken into consideration.
If the crane is loaded with the small test load, all the 1508-1 motions shall be carried out individually with the load situated in the most unfavourable position; however, due care should be dn during the test. In lieu of a more accurate calculation, the quasi-static forces acting on the structure and resulting from the assessment of themovement of thecentreof mass of thesystem underthe effect of the driving forces, of the resistances to motion and of the inertia forces, may be increased by afactor of 1,5 in order to take the dynamic effect into account.
Longitudinal stresses shall remain within the permissible stresses in members specified 15081-1 table In the case of cranes operating in hot environments, the assumed values shall correspond to the local conditions, e.
Height h for the analysis If the rail rests on an elastic support, the transverse and the longitudinal distribution of the bearing pressure under the rail shall be taken into consideration in their most unfavourable pattern in 15018-11 case for the calculation of the rail bearing beam and of the rail. In the case of cranes or trolleys with or without useful load, no negative ein loads may result from 1. If the crane is loaded with the large test load, then the small test load shall first be raised to a short distance from the floor.
If there is an operational possibility of the tilted trolley tilting back again to its normal position due to the sudden yielding of the obstacle, then the forces arising from such an occurrence shall be taken into account. In the case of wide-span bridge cranes and portal cranes with separate driving mechanisms, whose supporting structures are not designed to compensate for resistances to motion, driving forces and inertia forces, but only for a limited elastic forward motion of one side of the running gear ahead of the other side, special devices shall be provided to ensure that the assumptions on which the design calculation is based are not exceeded.