1、BSI Standards PublicationSteel wire ropes Determination of thetransverse rigidity of steelwire ropes under no axial loadconditionBS ISO 16839:2013Incorporating corrigendum October 2015BS ISO 16839:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16839:2013.
2、The UK participation in its preparation was entrusted to TechnicalCommittee MHE/2, Wire ropes.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible
3、 for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 91707 3ICS 77.140.65Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy
4、 and Strategy Committee on 31 August 2013.Amendments/corrigenda issued since publicationDate Text affected31 October 2015 Implementation of ISO corrected text 1 February2014: Formula (1) in 7.2 modified ISO 2013Steel wire ropes Determination of the transverse rigidity of steel wire ropes under no ax
5、ial load conditionCbles en acier Dtermination de le rigidit transversale des cbles en acier sans charge axialeINTERNATIONAL STANDARDISO16839First edition2013-08-01Reference numberISO 16839:2013(E)Corrected version2014-02-01ISO 16839:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT
6、ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be r
7、equested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 16839:2013ISO 16839:2013(E) ISO 2013
8、All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Test piece 25 Jaws . 26 Test equipment. 37 Test method . 37.1 General . 37.2 Calculation of maximum lateral force FQ,max.48 Calculation of the degree of deformation . 59 Test
9、report . 5Bibliography 6BS ISO 16839:2013ISO 16839:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committee
10、s. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Inter
11、national Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the diff
12、erent types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not
13、be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information
14、 given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 105, Steel wire ropes.This corrected version of ISO 16839:2013 incorporates the modification of Formula (1) in 7.2.iv ISO 2013 All rights reservedBS ISO 16839:2013ISO 1683
15、9:2013(E)IntroductionIn a multilayer spooling, wire ropes are subjected to lateral pressure as shown in Figure 1.Figure 1 Schematic presentation of the pyramidal form of layers in a multilayer spoolingThe cross-section shows the pyramidal form of layers (parallel sections) with the contact points of
16、 the rope to its surrounding turns. The lateral pressure is induced to the rope at four contact points. These working and stress conditions can be simulated with the test set-up shown in this International Standard.This International Standard is intended to provide manufacturers, suppliers and indep
17、endent testing bodies with a uniform testing method for determining the resistance against lateral deformation of steel wire rope without axial load.Lateral deformation values depend on the condition of the rope, and it is thus necessary to know the actual condition under which the deformation is to
18、 be, or has been, determined.The three usual conditions are initial (as manufactured), partially bedded, or f inal bedded. ISO 2013 All rights reserved vBS ISO 16839:2013Steel wire ropes Determination of the transverse rigidity of steel wire ropes under no axial load condition1 ScopeThis Internation
19、al Standard specifies a method for determining, by test and calculation, the resistance against lateral deformation of steel wire ropes without axial load. It provides a system of testing in order to qualify wire ropes.2 Normative referencesThe following documents, in whole or in part, are normative
20、ly referenced in this document and are indispensable to its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7500-1, Metallic materials Verification of static uniaxial testi
21、ng machines Par t 1: Tension/compression testing machines Verification and calibration of the force-measuring systemISO 463, Geometrical Product Specifications (GPS) Dimensional measuring equipment Design and metrological characteristics of mechanical dial gauges3 Terms and definitionsFor the purpos
22、es of this document, the following terms and definitions apply.3.1notional rope diameter in the direction of the lateral forcedynotional diameter of the rope in the Y-axis as determined from the following:dy = d dym3.2notional rope diameter perpendicular to the direction of the lateral forcedxnotion
23、al diameter of the rope in the X-axis as determined from the following:dx = d + dx1m+ dx2m3.3horizontal differential diameter valuedx1m, dx2mreading of the dial gauges perpendicular to the direction of the lateral forceNote 1 to entry: The zero position is the initial position when starting the test
24、 on the initial actual rope diameter.3.4vertical differential jaw movementdymreading of the dial gauge in the direction of the lateral forceNote 1 to entry: The zero position is the initial position when starting the test on the initial actual rope diameter.INTERNATIONAL STANDARD ISO 16839:2013(E) I
25、SO 2013 All rights reserved 1BS ISO 16839:2013ISO 16839:2013(E)3.5lateral forceFQforce applied laterally during the testNote 1 to entry: It is expressed in kilo newton (kN).3.6maximum lateral forceFQ,maxmost concentrated lateral force applied during the testNote 1 to entry: It is expressed in kilo n
26、ewton (kN).3.7degree of deformationVcompliance characteristics of steel wire ropes subjected to lateral load, expressed by the degree of deformationNote 1 to entry: The degree of deformation is expressed in per cent (%).3.8final bedded conditioncondition in which repeated readings of the dial gauges
27、 are consistent at both ends of the force range3.9partially bedded conditioncondition where force cycles have been applied, but the dial gauge readings at both ends of the force range are not yet consistent4 Test pieceThe test piece shall be representative of the rope as a whole and be free from def
28、ects. The surfaces of the rope sections shall be thoroughly wiped clean. Its length shall be such that the free length between end servings is at least equivalent to three lay lengths. The rope shall be served with a permanent serving. The material used for the permanent serving shall be tinned or g
29、alvanized soft wire or strand for zinc/zinc alloy coated wire rope, and uncoated (bright), tinned or galvanized soft wire or strand for uncoated (bright) wire rope. The wire rope shall be cut by abrasive wheel, percussive or shearing methods, paying particular attention not to disturb the position o
30、f wires and/or strands below and between the permanent servings.Fused and tapered ends may be used as an alternative to serving, but the sample length shall be increased to avoid any effects, e.g. shortening of the lay length associated with fused ends.The sample beyond the jaws shall be supported t
31、o avoid any bending of the rope sample.5 JawsA set of two jaws is necessary for the test method described in this particular procedure. The length of the jaws, ljaws, shall be at least as long as one lay length of the rope. The width of the jaws, b, shall be at least equivalent to three nominal rope
32、 diameters. For the case in which the jaws are fully supported by the interface of the compression testing machine, the thickness of the jaws, t, shall be at least equivalent to one nominal rope diameter. Otherwise, the thickness shall be chosen in such a way that the deformation in either direction
33、 is smaller than 1 %. The depth of the V-shaped groove, g, with angle of aperture of 2 ISO 2013 All rights reservedBS ISO 16839:2013ISO 16839:2013(E)120 shall be equivalent as a minimum to 0,34 nominal rope diameter. The jaws shall be made out of hardened steel and the groove shall have a minimum ha
34、rdness of 60 HRC.NOTE An angle of 120 provides more advanced conditions than in a multilayer spooling, where the contact angle is between 116 anda 117.Figure 2 Jaw dimensions6 Test equipmentThe compression testing machine shall be in accordance with ISO 7500-1 class 1.The dial gauges shall be in acc
35、ordance with ISO 463. The accuracy of the dial gauges shall be equal to or less than than 1 %.7 Test method7.1 GeneralSee Figure 3. ISO 2013 All rights reserved 3BS ISO 16839:2013ISO 16839:2013(E)Figure 3 Test set-upIt is important that the dial gauges be directly attached to the jaws. Any connectio
36、n of the dial gauge to the other parts of the compression testing machine would include objectionable deformations at the interfaces in the test result. The attachment of the gauges shall be secure, so that the test results are not affected.7.2 Calculation of maximum lateral force FQ,maxBased on exp
37、erience, the lateral pressure, P, on a steel wire rope in a multilayer spooling may be up to 60 N/mm2.The maximum lateral force, FQ,max, applied during the test is calculated as given by Formula (1):FPd lQ,max1000= nomjaws(1)whereFQ,maxis the maximum lateral force, applied at the test, in kilo newto
38、n (kN);P is the lateral pressure: 60 N/mm2;dnomis the nominal diameter of the rope, in millimetres (mm);ljawsis the length of the jaws (see Figure 2), in millimetres (mm).The loading tests on the ropes shall be carried out at room temperature. The actual rope diameter and lay length shall be taken f
39、rom the unloaded rope sections. The compression jaws shall be mounted in a compression testing machine.The test piece shall be put into the test set-up and positioned in the corresponding grooves of the compression jaws and loaded to a preload of 0,5 % of FQ,max., where all dial gauges are set to ze
40、ro. This reference setting shall be kept throughout all subsequent loading tests.Starting at the preload, the ropes shall be loaded step-by-step to FQ,max. It is recommended to carry out at least 10 steps. Changes in the actual rope diameter perpendicular to the direction of force at individual load
41、 steps at load, FQ, shall be recorded with the dial gauges (dx1m; dx2m), which were horizontally opposed connected to the rope sections via adaptors of a width suitable to bridge the gap between adjacent strands in the centre of the compression jaws. Changes in the actual rope diameter in 4 ISO 2013
42、 All rights reservedBS ISO 16839:2013ISO 16839:2013(E)the direction of force shall be recorded via the displacement of the compression jaws with the dial gauge (dym). During the first force cycle, values for the initial condition of the rope shall be recorded.Decrease the force to the preload.Contin
43、ue applying and reducing the force in a cyclical manner until the test piece is bedded, either partially or fully, as required.If cycling is stopped before the rope reaches its bedded condition, i.e. the rope is only partially bedded, the number of cycles shall be recorded see 9 i).8 Calculation of
44、the degree of deformationUsing the test results (readings) from Clause 7, the degree of deformation, V (%), as an index of the compliance characteristics of the steel wire rope subjected to lateral load shall be calculated as given by Formula (2):Vdxdy=1 100 (2)wheredy is the actual rope diameter in
45、 the direction of force at load FQ;dx is the actual rope diameter perpendicular to the direction of force at load FQ(see Clause 3).9 Test reportThe test report shall contain at least the following information:a) a reference to this International Standard, i.e. ISO 16839;b) the test number;c) the rop
46、e identification;d) the resulting of the degree of deformation at FQ,max, and a statement as to whether the value was determined in initial, partially or final bedded condition;e) the resulting of the degree of deformation per load step;f) the forces per load steps at which the readings were taken;g
47、) the readings of the dial gauges (dx1m, dx2m, dym) per load step;h) the calculated actual diameters, dx and dy, per load step;i) the number of cycles completed;j) the jaw dimensions. ISO 2013 All rights reserved 5BS ISO 16839:2013ISO 16839:2013(E)BibliographyISO 2768-2, General tolerances Part 2: G
48、eometrical tolerances for features without individual tolerance indicationsISO 1302, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentationISO 17893, Steel wire ropes Vocabulary, designation and classification6 ISO 2013 All rights reservedBS ISO 168
49、39:2013ISO 16839:2013(E) ISO 2013 All rights reservedICS 77.140.65Price based on 6 pagesBS ISO 16839:2013This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswick High Road London
