BS 8407-2002 Specification for mechanical and spliced joints in conveyor belting for use underground《地下用输送带机械和叠接接头的规范》.pdf
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1、BRITISH STANDARD BS 8407:2002 Specification for mechanical and spliced joints in conveyor belting for use underground ICS 53.040.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS 8407:2002 This British Standard, having been prepared under the direction of the Materials and
2、Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 28 May 2002 BSI 28 May 2002 The following BSI references relate to the work on this British Standard: Committee reference PRI/26 Draft for comment 00/124045 ISBN 0 580
3、33335 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PRI/67, Conveyor belts, upon which the following bodies were represented: British Rubber Manufacturers Association Ltd Health and Safety Executive Institute of Mater
4、ials Tun Abdul Razak Research Centre UK Steel Association Amendments issued since publication Amd. No. Date CommentsBS 8407:2002 BSI 28 May 2002 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3T e r m s a n d d e f i n i t i o n s 1 4 Mech
5、anical fastener holding (applicable only to textile belting) 2 5 Spliced/vulcanized joints (applicable to textile and steel cord conveyor belts) 3 Annex A (normative) Dynamic life-test for joints made with mechanical fasteners 4 Annex B (normative) Static tensile test for spliced (vulcanized) joints
6、 8 Annex C (normative) Dynamic life-test for spliced (vulcanized) joints 9 Bibliography 10 Figure A.1 Symmetric geometry 6 Figure A.2 Asymmetric geometry 6 Figure A.3 Configuration of dynamic testing machine 7 Table 1 Belt test requirements (mechanical fasteners) 2 Table 2 Belt test requirements vul
7、canized (spliced) joints 3 Table A.1 Dimensions of pulley diameters and pulley centres for testing machine (see Figure A.3) relative to nominal belt strengths 7 Table A.2 Nominal loop lengths and speeds for pulley configurations 8BS 8407:2002 ii BSI 28 May 2002 Foreword This British Standard has bee
8、n prepared by PRI/67, Conveyor belting. For some years the industry has adopted informal specifications which have provided a satisfactory level of operational safety, but with the increased use and value of risk assessments a more formalized approach is necessary. This document is intended to be us
9、ed in conjunction with BS 3289 and British Coal Specification 730 until such time as these specifications are replaced by harmonized European Standards. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Complia
10、nce with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates wh
11、en the document was last issued.BS 8407:2002 BSI 28 May 2002 1 1 Scope This British Standard specifies requirements for joints made in conveyor belting for use underground. It specifies performance requirements for the following properties: joints made with mechanical fasteners (static strength); jo
12、ints made with mechanical fasteners (dynamic strength); joints made by chemical splicing/vulcanization (static strength); joints made by chemical splicing/vulcanization (dynamic strength). The methods of test to be used to validate the requirements are specified in the annexes. This standard is not
13、applicable or valid for light conveyor belts as specified in BS EN 873. NOTE Although this standard is intended to specify the requirements for conveyor belting, the test methods specified in 4.1.1 and 4.2.1 can also be used to assess the performance of mechanical fasteners when used with specific t
14、ypes of conveyor belting. For this reason, an alternative test configuration is specified in Annex A. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the la
15、test edition of the referenced document (including any amendments) applies. BS EN ISO 1120, Conveyor belts Determination of strength of mechanical fastenings Static test method. BS 3289, Specification for textile carcass conveyor belting for use in underground mines (including fire performance). BS
16、1610, Methods for the load verification of testing machines. 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply: 3.1 fastener pitch the nominal distance between a point on a fastener unit and the corresponding point on the next fastener unit (see Figu
17、re A.1 and Figure A.2) 3.2 fastened width the number of fastener units inserted in one end of a test piece multiplied by the pitch (see Figure A.1 and Figure A.2) 3.3 nominal tensile strength the specified minimum value of the tensile strength of the conveyor belt, expressed in N/mm 3.4 joints the j
18、oining of individual lengths of conveyor belting to produce a longer length NOTE This should not be confused with transverse (or longitudinal) fabric joints made during the production process for multi-ply belting.BS 8407:2002 2 BSI 28 May 2002 4 Mechanical fastener holding (applicable only to texti
19、le belting) 4.1 Static tensile strength 4.1.1 Test method Belts up to and including Type 15 (2 650 N/mm) shall be tested in accordance with BS EN ISO 1120. 4.1.2 Requirement For new belting, the mean value obtained shall be not less than 60 % of the nominal tensile strength for belts of tensile stre
20、ngth up to and including 1 400 N/mm (Type 8), and not less than 50 % of nominal tensile strength for belts above 1 400 N/mm. 4.2 Dynamic life-test 4.2.1 Test method Belts up to and including Type 15 (2 650 N/mm), as defined in BS 3289:1990, shall be tested in accordance with Annex A. 4.2.2 Requireme
21、nts When tested in accordance with 4.2.1, belts of nominal tensile strength up to and including 2 650 N/mm (Type 15 as defined in BS 3289:1990) shall conform to Table 1. NOTE 1 The type of fastener specified in Table 1 is for test purposes only, and to allow a comparison of belt performance. The tab
22、le is not a list of approved or recommended fasteners. NOTE 2 Solid mild steel pins should be used, of appropriate diameter, as recommended by the fastener supplier. In line with good practice, belts of Type 12 and above would normally be vulcanized. Mechanical fasteners, if used, shall conform to t
23、he static tensile strength requirement specified in 4.1.2. Table 1 Belt test requirements (mechanical fasteners) Belt Pulley diameter mm Total loop length m Type of fastener No. of pieces in loop No. of test loops Minimum no. of cycles (mean of each piece in test loop) BC Spec 557 4 250 5.2 Type A 4
24、 2 75 000 Mato U35 BC Spec 557 5 455 10.5 Type A 4 2 75 000 Mato U35 Titan 1 6 610 12.0 MME Type C 6 1 100 000 Titan 1 8 610 12.0 MME Type C 6 1 100 000 Titan 1 10 800 13.5 MME Type C 6 1 100 000 Mato U37A Titan 1 12 800 13.5 MME Type C 6 1 100 000 Mato U38A 15 1 000 13.5 Mato U38 6 1 100 000 NOTE T
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