1、BRITISH STANDARD Specification for Gin blocks ICs 63.020.30 BS 1692 : 1998 BS 1692 : 1998 Amd. No. Committees responsible for this British Standard Date Text affected The preparation of this British Standard was entrusted to Technical Committee MHW3, Cranes and derricks, upon which the following bod
2、ies were represented Associated British Ports Association of Lorry Loader Manufacturers and Importers British Iron and Steel Producers Association Building Employers Confederation Construction Plant-hire Association Electricity Association Engineering Equipment and Materials Users Association Federa
3、tion of Manufacturers of Construction Equipment and Cranes Federation of Wire Rope Manufacturers of Great Britain Health and Safety Executive Institute of Logistics Institution of Mechanical Engineers Institution of Occupational Safety and Health Institution of Plant Engineers Institution of Stnicti
4、iral Engineers Lifting Equipment Engineers Association Lloyds Register of Shipping Safety Assessment Federation Ltd. The following bodies were also represented in the drafting of this standard, through a subcommittee: This British Standard, haling been prepared under the direction of the Engineering
5、 Sector Board, was published under the authority of the Standards Board and comes into effect on 1 .FI March 1998 O BSI 1998 Amalgamated Engineering Union British Chain Manufacturers Association British Industrial Truck Association Construction Health and Safety Group Cordage Manufacturers Institute
6、 Ministry of Defence National Association of Scaffolding Contractors Recovery Equipment Manufacturers and Suppliers Association United Kingdom Offshore Operators Association The following BSI references relate to the work on this Committee reference MHE3 Draft for comment 94713696 DC ISBN O 580 2623
7、5 9 StdndXd: BS 1692 : 1998 Contents Committees responsible Foreword Page Inside front cover 11 Specification 1 Scope 1 2 References 1 3 Definition 1 4 Design 1 5 Testing and certification 2 A (informative) mica1 parameters for gin blocks 3 B (informative) Recommendations for the suspension of gin b
8、locks 5 A.l mical gin block with fabricated sheave 3 B.l Loads acting on a gin block 5 Annexes Figures A.2 Typical gin block with a fonned steel sheave and hook with safety latch 4 Table A.1 List of references Safe working load, proof load, and dimensions of a typical gin block 3 Inside back cover B
9、SI 1998 1 BS 1692 : 1998 Foreword This British Standard has been prepared by Technical Committee MHE/3. It supersedes BS 1692 : 1971, which is Withdrawn. The principal changes that have been made are as follows: a) corrections to dimensions; b) elimination of anomalies in the table; c) improvements
10、to design parameters; d) general update to the writing style and format. As this revision of BS 1692 was prepared there was no comparative standard, in terms of subject coverage, in the work programme of the relevant European Technical Committee (CEN/TC 168). The primary objective of this specificat
11、ion is to provide requirements for safety and reliability of lifting equipment without placing restrictions on the general design or the methods employed in construction. It has been assumed in the drafting of this British Standard that the execution of its provisions is entrusted to appropriately q
12、ualified and experienced people. Attention is drawn to the following statutory regulations: The Construction (Lifting Operations) Regulations 1961, Regulation 36 i, The Supply of Machinery (Safety) Regulations 1992, Statutory Instrument 1992, No. 3073 2 and The Supply of Machinery (Safety)(Amendnien
13、t) Regulations 1994, Statutory Instuuinent 1994, No. 2063 3. Compliance 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 6, an inside back cover and a back cove
14、r. 11 8 BSI 1998 BS 1692 : 1998 Specification 1 Scope This British Standard specifies the design, construction and testing of fibre rope gin blocks for the hoisting and lowering of loads up to 250 kg. 2 References 2.1 Normative references This British Standard incorporates, by dated or undated refer
15、ence, provisions from other publications. These normative references are made at the appropriate places in the text and the cited publications are listed on the inside back cover. For dated references, only the edition cited applies; any subsequent amendments to or revisions of the cited publication
16、 apply to this British Standard only when incorporated in the reference by amendment or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. 2.2 Informative references This British Standard refers to other publications that provide info
17、rmation or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cover, but reference should be made to the latest editions. 3 Definition For the purposes of this British Standard, the following definition applies. 3.1 gin block Sheave h
18、oused in a frame, suspended by a swivel hook or ring, used with fibre rope for the raising and lowering of a load. NOTE. This is sometimes referred to as a gin wheel. 4 Design 4.1 Design strength The gin block, including the hook or eyebolt, shall be designed to withstand the proof loading specified
19、 in 5.1 without physical distortion. 4.2 Form and general dimensions The gin block shall conform to 4.3 to 4.8. NOTE. Typical details and dimensions are given in table A.l for a 250 kg swivel gin block with a fabricated sheave (see figure A.l) or a rolled forin sheave (see figure A.2). 4.3 Frames Fr
20、ames shall be so constructed that no weld is subject to a tensile stress resulting directly froni the load carried. Gin blocks shall be so designed as to minimize the risk of jamming the rope between the frame and the sheave. All through holes shall be machined in true alignment and normal to their
21、respective surfaces. The hole in the crosshead of the frame shall be suitably countersunk to acconimodate the radius at the root of the shank of the hook or eyebolt. 4.4 Suspension devices 4.4.1 General Gin block suspension shall be by either a hook or an eyebolt, see annex B. 4.4.2 Hooks Hooks shal
22、l be forged from steel and the appropriate size should be selected from BS 2903 : 1980. NOTE. Attention is drawn to the Construction (Lifting Operations) Regulations 19G1. Regulation 36 concerning prevention of displacement i 4.4.3 Eyebolts An eyebolt from BS 4278 : 1984 shall be used. 4.4.4 Fitting
23、 Shanks of hooks or eyebolts shall either be: a) provided with a nut or screwed collar of outside diameter of at least 1.5 times the diameter of the shank the continuous length of shank engaged by the nut or screwed collar on the load side shall be equal to at least 0.75 times the diameter of the sh
24、ank before being interrupted by drilling for pins or other fixings; or b) so shaped from the solid as to afford the same security as though a nut were fitted as in a). 4.5 Axle pins The machining tolerance on the bearing surface of the axle pins shall be The thickness of the pin head shall be not le
25、ss than 0.25 times the diameter of the pin and the diameter of the pin head shall be sufficiently large to retain the pin in position. The tail end of the pin shall project a distance of not less than 10 min and be cross-drilled and fitted with a suitable split cotter pin in accordance with BS 1574
26、: 1972. The machined bearing surface of the axle pin shall be smooth, bright and clean. To prevent rotation, the axle pin shall be positively secured either by keying to the frame or by other equally effective means. 4.6 Sheaves 4.6.1 Form The sides of sheaves shall have no apertures. The width of t
27、he central boss in the finished sheave shall be greater than the width of the rim by not less than 3 mm and not more than 8 mm. The axle pinhole shall be concentric with the rope groove. The faces of the bosses shall be machined square with the axle pin hole. mm. BSI 1998 1 BS 1692 : 1998 4.6.2 Groo
28、ve The sheave rope groove shall be smoothly finished and shall have a depth of not less than 0.5 times the diameter of the largest rope for which the gin block is designed. The width at the top of the groove (dimension B in figures A.l and A.2) shall be at least 1.3 times the diameter of the largest
29、 rope for which the block is designed. All edges of the groove shall be rounded and all surfaces shall be free from projections or other defects likely to cause darnage to the rope. 4.6.3 Fitting When fitted the sheave shall rotate freely by hand. 4.7 Clearances The openings in the frame shall be la
30、rge enough to prevent contact with, and chafing of, the rope. The total clearance between the rim of the sheave and the frame shall not exceed 6 min. The total clearance between the hole in the crosshead and the shank of the hook or eyebolt shall not exceed 1 mm. The total clearance between the axle
31、 pin and the holes in the frame, and between the axle pin and the sheave bore shall not exceed 0.5 mm. 4.8 Marking The following information shall be permanently and legibly marked on a non-stressed part of the frame, eyebolt, or hook of each gin block1): a) distinguishing number or certification id
32、entifying mark (see clause 5.2); b) safe working load (in kg); e) maximum diameter of rope to be used d) nanie of manufacturer or supplier; e) the number of this British Standard. 5 Testing and certification 5.1 Proof test 5.1.1 Test procedure Each gin block shall be tested by a proof load of twice
33、the safe working load. NOTE. As a result, the hook or ring is subjected to four times the safe working load. After testing each gin block shall then be thoroughly examined by a competent person for signs of deformation or damage. 5.1.2 Acceptance criteria After proof loading the hook and sheave shal
34、l rotate freely. The axle pin and sheave of each gin block shall then be removed and all parts thoroughly examined. The gin block shall be deemed to be acceptable only if found to be free from deformation, cracks, flaws or other defects. 5.2 Certificate of test and examination The gin block manufact
35、urer or supplier shall provide a certificate for each consignment of blocks, giving the following information for each one: a) distinguishing niark or number (as marked on the gin block (see 4.8); b) description; c) number in consignment; d) proof load applied; e) safe working load f) date the test
36、and examination were completed. The certificate shall declare that each gin block was proof loaded in accordance with 5.1, was subsequently thoroughly examined by a competent person, and that it conforms to BS 1692. It shall also state the name and address of the testing establishment and the status
37、 of the signatory. 1 Marking BS 1692 : 1998 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is solely the claimants responsibility.
38、 Such a declaration is not to be confused with third party certification of conformity, which may also be desirable 2 8 BSI 1998 BS 1692 : 1998 Annexes Annex A (informative) Typical parameters for gin blocks Typical parameters for gin blocks axe given in table Al. Typical details of gin blocks are s
39、hown in figures Al 2. Table A.l Safe working load, proof load, and dimensions of a typical gin block Approximate weight, kg Safe working load, kg Proof load, kg Rope diameter Outside diameter of sheave Width of rope groove Width of sheave boss Axle pin diameter Crosshead width Crosshead depth Fmne w
40、idth Fmne thickness Uinierisions in 111x1 unless ulherwisr slated 10.5 250 1000 19 ma. 250 25 38 19 40 19 38 n u IL- Section of sheave Figure A.l Typical gin block with fabricated sheave A BSI 1998 3 BS 1692 : 1998 H I l 1 Figure A.2 Typical gin block with a formed steel sheave and hook with safety
41、latch 4 BSI 1998 BS 1692 : 1998 Annex B (informative) Recommendations for the suspension of gin blocks B.l Gin blocks should be suspended by fitting onto devices that: a) provide an adequate and secure support for the gin block; b) support the proof load (see 4.1) and the pull in the hauling part of
42、 the rope (see figure B.1). B.2 Attention is drawn to BS 5973 : 1993 which limits the maxiniuni load which can be lifted by a scaffold inoimted gin block to 50 kg. Resultant load at suspension point = 2 x S.W.L n S.W.L Pull on hauling part, equivalent to S.W.L Figure B.1 Loads acting on a gin block
43、BSI 1998 5 6 blank BS 1692 : 1998 List of references (see clause 2) Normative references BSI publications BRITISH STANDARDS TNSTTTT JTTON, 1,ondon ES 1574: 1994 BS2903: 1980 BS4278: 1984 Specification for split pins (inch series) Specification for higher tensile steel hooks for chains, slings, block
44、s und yenerul enginemhg purposes Speci:fication .for eyebolts .fur l(ftirq yuyoses Informative references BSI publications BRITISH STANDARDS INSTITUTION, London BS5973: 1993 Code ojpmctice jor access and working scajjolds an special scaffold structures in steel Other references i GREAT BRITAIN. The
45、Construction (Lifting Operations) Regulations, 196. London: HMSO. 2 GREAT BRITAIN. The Supply of Machinery (Safety) Regulations 1992, Statutory Instrument 1992, No. 3073. London: HMSO. 3 GREAT BRITAIN. The Supply of Machinery (Safety) Regulations 1994, Statutory Instrument 1994, No. 2063. London: HM
46、SO. BSI 1998 BS 1692 : 1998 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charte
47、r. Contract requirements A British Standard does not purport to inclilde all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure
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