ISO-8794-1986.pdf
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1、International Standard 8794 0 * 4 4!l!l ,NTERNAT,ONAL ORGAN,ZAT,ON FOR STANDARDIZATIONMEXYHAPOHAR OPTAHMSAUMR l-i0 CTAHflAPTM3AUHM.ORGANlSATlON INTERNATIONALE DE NORMALISATION Steel wire ropes - Spliced eye terminations for slings Gbles en acier - 03s pisds pour Mngues First edition - 1986-12-15 Gj
2、UDC 621.86.065 Ref. No. IS0 8794-1986 1E) 8 e Descriptors : metal products, wire rope, hoisting slings, loops, specifications, tests. 2l 6 2 - Price based on 5 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/99
3、72545001 Not for Resale, 04/27/2007 08:54:22 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Sta
4、ndards is normally carried out through IS0 technical committees. 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, govern- mental and non-governmental, in liaison with ISO, als
5、o take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by t
6、he member bodies voting. International Standard IS0 8794 was prepared by Technical Committee ISO/TC 105, Steel wire ropes. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest e
7、dition, unless otherwise stated. 0 international Organization for Standardization, 1986 0 Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 08:54:22 MDTNo re
8、production or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 8794-1986 (El Steel wire ropes - Spliced eye terminations for slings 1 Scope and field of application This International Standard specifies minimum requirements for spliced eye terminations for wire rope sli
9、ngs. Prototype tests covering the n/pe acceptance of splice methods are also specified in this International Standard. 2 References IS0 2408, Steel wire ropes for general purposes - Characteristics. IS0 7531, Wire rope slings for general purposes - Characteristics and specifications. 1) 3 Definition
10、s 3.1 spliced eye terminations (hand-spliced) : Loop or eye at the end of a rope made by tucking the ends of the strands back into the main body of the rope. 3.2 tuck: Single reeving of a strand to be spliced under a specified number of strands in the wire rope. 4 Types of wire ropes All ropes speci
11、fied in IS0 7631 are suitable for provision of spliced eye terminations. 5 Splicing operation The splice shall have at least five tucks for each strand, at least three of them with the whole strand. The splicing method is specified in the annex. NOTES 1 Depending on the rope size, rope construction
12、and the splicing method, more tucks per strand than given above may be necessary. 2 To get a smooth run-out of the splice, it may be advantageous to make the last tuck or the last two tucks with the half of the wires cut out of the strands. 3 Certain national and international conventions exist for
13、regulating the types of spliced eye terminations to be used in specific applica- tions, e.g. dock works. Account should be taken of such regulations when this International Standard is applied. The hand-splicing operation shall only be carried out by qualified splicers. The supplier shall be respons
14、ible for ensuring that splicers are properly trained and qualified. The wire ends of the spliced strands should be covered with a suitable serving at the option of the purchaser. 6 Design requirements of the spliced eye termination The design breaking strength of a spliced eye termination shall be a
15、t least 70 % of the minimum breaking force of the respec- tive wire rope. If a steel core is spliced with at strands, it may be considered as rope. 7 Prototype tests Samples of splices for each rope tests described in 7.1 and 7.2. least three tucks with the a load-bearing part of the size shall have
16、 passed the 7.1 Tensile test to destruction Two tests shall be carried out on each size of fibre-cored and steel-cored wire rope for which the splicing method is recom- mended. The rope constructions used for test shall be 6 x 19 and 6 x 36 up to and including a nominal rope diameter of 14 mm and 6
17、x 36 for nominal rope diameters above 14 mm. A spliced eye termination shall be formed without a thimble at each end of each test piece. The minimum distance between the tails of the splices shall be 30 times the nominal rope diameter. The force shall be applied by means of round pins having a suita
18、ble diameter, threaded through the eye termina- tion. Not more than 60 % of the minimum breaking force of the 1) At present at the stage of draft. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for
19、Resale, 04/27/2007 08:54:22 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8794-1986 (E) rope as specified in IS0 2408 shall be applied quickly; thereafter stress shall be applied steadily at a rate of not more than 10 MPa/s until the actual breaking load is reached. T
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