1、BRITISH STANDARD BS 6592:1985 ISO 5613:1984 Specification for Drive sprocket assemblies for chain conveyors for mining ISO title: Mining Drive sprocket assemblies for chain conveyors UDC 622.647.222:621.85.051.5BS6592:1985 This British Standard, having been prepared under the directionof the Mining
2、and Quarrying Requisites Standards Committee, was published underthe authority of the BoardofBSI and comes intoeffecton 31May1985 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference MQE/6 Draft for comment 82/79440 DC ISBN 0 580 14435 6 Committees respon
3、sible for this British Standard The preparation of this British Standard was entrusted by the Mining and Quarrying Requisites Standards Committee (MQE/-) to Technical Committee MQE/6, upon which the following bodies were represented: Association of British Mining Equipment Companies British Chain Ma
4、nufacturers Association British Valve Manufacturers Association Ltd. Health and Safety Executive Institution of Mining Engineers National Coal Board Amendments issued since publication Amd. No. Date of issue CommentsBS6592:1985 BSI 12-1999 i Contents Page Committees responsible Inside front cover Na
5、tional foreword ii 1 Scope and field of application 1 2 References 1 3 Definitions 1 4 Drive sprocket assembly 1 5 Sprocket ring and barrel 2 Annex Design formulae 6 Figure 1 Typical sprocket assembly 3 Figure 2 Tooth profile 4 Table 1 Sprocket assemblies and corresponding chain centres 2 Table 2 Sp
6、rocket dimensions 5 Publications referred to Inside back coverBS6592:1985 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Mining and Quarrying Requisites Standards Committee and is identical with ISO5613:1984 “Mining Drive sprocket assemblies for c
7、hain conveyors” published by the International Organization for Standardization (ISO). The UnitedKingdom hastaken part in the preparation of the International Standard through Sub-committee2 of Technical Committee82 of the International Organization for Standardization (ISO). Terminology and convent
8、ions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used
9、 as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. A British Standard does not purport to include all t
10、he necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International Standard Corresponding British Standard ISO 610:1979 BS 2969:1
11、980 Specification for high tensile steel chains (round link) for chain conveyors and coal ploughs (Identical) ISO 1082:1984 BS 4831:1985 Specification for shackle type connector units for chain conveyors for mining (Identical) ISO 5612:1984 BS 6591:1985 Specification for scraper bars for chain conve
12、yors for mining (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amen
13、dment table on the inside front cover.BS6592:1985 BSI 12-1999 1 1 Scope and field of application This International Standard specifies the requirements for a range of sprocket assemblies for use with twin outboard chain assemblies for chain conveyors. These assemblies incorporate sprocket rings desi
14、gned to accept chains complying with ISO610, shackle type connectors complying with ISO1082 and scraper bars complying with ISO5612. 2 References ISO 610, High-tensile steel chains (round link) for chain conveyors and coal ploughs. ISO 1082, Mining Shackle type connector units for chain conveyors. I
15、SO 5612, Mining Scraper bars for chain conveyors. 3 Definitions For the purpose of this International Standard, the following definitions apply: 3.1 drive sprocket assembly an arrangement which comprises the drive sprocket rings and connecting barrel, shown inFigure 1, or a barrel incorporating inte
16、gral drive sprocket rings 3.2 drive sprocket ring a toothed wheel by which the chain of a chain conveyor is driven 3.3 connecting barrel a cylindrical spacer between two drive sprocket rings 3.4 sprocket pocket that part of a complete sprocket ring into which either a chain link or shackle type conn
17、ector sits 3.5 inspector the representative of the purchaser 4 Drive sprocket assembly 4.1 Design Drive sprocket assemblies as shown inFigure 1 shall conform to the dimensions and tolerances stated inTable 1 andTable 2 which are based on the design formulae given in theAnnex. Unless otherwise specif
18、ied by the purchaser and having regard to these limitations, it is the manufacturers responsibility to ensure that the assembly and its components shall be of adequate strength for the duty which they are required to perform, when related to the dimensions and mechanical properties of the appropriat
19、e chain (see ISO610). 4.2 Assembly When constructing the drive sprocket assembly shown inFigure 1, the profiles of each complete sprocket ring shall be aligned with the other within the permitted tolerances stated in5.1. Where applicable, care shall be taken to adopt the correct welding procedure fo
20、r the steels used for the sprocket rings and the barrel. 4.3 Dimensional tests The dimensions for each sprocket assembly given inTable 2 shall be verified by methods agreed between the purchaser and the manufacturer. NOTEAn associated guidance document on methods of verifying sprocket dimensions is
21、being prepared. 4.4 Workmanship Where applicable, all welds shall be smoothly finished, and on visual examination, have no harmful fissures, notches or other imperfections. Magnetic and/or fluorescent crack deflection, gamma radiography or other forms of non-destructive testing shall be specified on
22、ly by agreement between purchaser and manufacturer. Such methods of testing and the criteria to be applied shall be clearly defined and agreed at the time of the enquiry and order. 4.5 Marking Each sprocket assembly shall be visibly and permanently marked with a) the manufacturers registered trade n
23、ame or trade mark; b) the size and pitch of chain and the chain centres (seeTable 1); c) any other marking as agreed between the purchaser and the manufacturer.BS6592:1985 2 BSI 12-1999 4.6 General inspection For the purpose of witnessing the specified tests and inspecting the testing machines and m
24、ethods of examination, the inspector shall be given access to the relevant parts of the works of the manufacturer at all reasonable times. 5 Sprocket ring and barrel 5.1 Dimensions Drive sprocket rings as shown inFigure 2 shall comply with the dimensions and tolerances stated inTable 2. The compatib
25、ility between chain and sprocket shall be verified by methods agreed between the purchaser and the manufacturer (seenote to4.3). 5.2 Construction Drive sprocket rings shall comply with one of the following methods of construction: a) cast in one piece; b) machined from the solid; c) a pair of forged
26、 or cast inner and outer half rings. Radial alignment between the profiles of the sprocket teeth of each ring in the finished drive sprocket assembly shall be within1mm measured at the centreline of the chain. 5.3 Design and materials The selection of materials, any heat treatment and the method of
27、construction shall be agreed between the purchaser and the manufacturer. Table 1 Sprocket assemblies and corresponding chain centres NOTEThese chain centres correspond to the nominal chain centres specified in ISO5612. Other chains centres may be specified by agreement between the manufacturer and p
28、urchaser. Dimensions in millimetres Nominal size and pitch of chain Nominal dimension of chain centres a , A 1 14 50 350 400 500 18 64 400 500 600 650 700 22 86 450 500 600 650 700 750 24 86 600 24 87,5 600 26 92 500 600 650 700 800 a SeeFigure 1.BS6592:1985 BSI 12-1999 3 Figure 1 Typical sprocket a
29、ssemblyBS6592:1985 4 BSI 12-1999 NOTESee clauseA.16 with reference to dimension T. Figure 2 Tooth profileBS 6592:1985 BSI 12-1999 5 Table 2 Sprocket dimensions Dimensions in millimetres Nominal size and pitch of chain Number of sprocket teeth Pitch circle diameter of sprocket Overall diameter Groove
30、 diameter Barrel diameter Groove width Centreline of groove to inside face Root radius Pocket plan radius Height from centre to bottom of pocket Length of pocket Tooth stub thickness Pocket centres Tooth flank radius Groove radius Tooth stub root radius N B C D E F G H J K L L 1 M R R 1 S ref. max.
31、max. min. tol. max. nom. tol. max. nom. tol. nom. tol. max. ref. ref. ref. ref. 14 50 5 6 7 8 9 10 162 193 225 256 288 320 190 221 253 284 316 348 104 136 168 201 232 263 92 126 159 192 224 256 16,0 33 7 24 67,5 84,5 101 117,5 133,5 149,5 82 46 68 29 7 7 18 64 5 6 7 8 9 208 248 288 328 369 244 284 3
32、24 364 405 135 176 216 257 298 122 165 207 249 291 21,0 34 9 30 86,5 108 129 150 171 105 60 87 37 9 9 22 86 5 6 7 8 9 279 333 387 441 495 323 377 431 485 539 188 243 298 353 408 172 229 286 342 398 26,0 50 11 37 118 146,5 175 203 231 136 81 114 53 11 11 24 86 5 6 7 8 9 279 333 387 441 495 327 381 43
33、5 489 543 182 237 291 346 400 164 222 278 335 390 28,0 53 12 40 116,5 145,5 173,5 202 229,5 140 81 116 50 12 12 24 87,5 5 6 7 8 9 284 339 394 449 504 332 387 442 497 552 186 242 298 353 409 168 227 285 342 399 28,0 53 12 40 118,5 148 177 205,5 234 142 82 118 51,5 12 12 26 92 5 6 7 8 9 299 356 414 47
34、2 530 350 408 466 524 582 194 252 311 369 428 175 236 297 357 417 30,0 57 13 43 124,5 155 185,5 215,5 245,5 151 86 125 53 13 13 +1,5 0 +0,5 0 0 1,5 +2 0 +1,5 0 +0,5 0 0 1,5 +2 0 +1,5 0 +0,5 0 0 1,5 +2 0 +1,5 0 +0,5 0 0 1,5 +2 0 +1,5 0 +0,5 0 0 1,5 +2 0 +1,5 0 +0,5 0 0 1,5 +2 0BS6592:1985 6 BSI 12-19
35、99 Annex Design formulae A.1 Pitch circle diameter (theoretical), B The pitch circle diameter (PCD) is given by the equation where P is the nominal pitch of the chain link; where N is the number of teeth in the sprocket; d is the nominal diameter of the chain link material. The value for B obtained
36、shall be taken to the nearest lower whole number. A.2 Overall diameter (reference), C The overall diameter is given by the equation C = B + 2d NOTEThe actual diameter shall be agreed between the purchaser and the manufacturer. A.3 Groove diameter, D The groove diameter, D, is the diameter under the
37、vertical chain links minus a diametral clearance. The values given inTable 1 are based on the following diametral clearances, in millimetres: NOTEThe actual diameter shall be agreed between the purchaser and the manufacturer. A.4 Barrel diameter, E The barrel diameter is given by the equation E = 2K
38、 + d 2x 5 where K is the height from the sprocket centre to the bottom of the pocket (seeA.9); x is the distance from the bolt centre to the bottom of the scraper bar. This equation is based on a diametral clearance between the sprocket barrel and the scraper bar of5mm. The actual clearance may be r
39、educed by agreement between the manufacturer and the purchaser. A.5 Sprocket groove width, F The sprocket groove width is given by the following equations: a) for a 14 mm chain: F = d + 2,0 b) for a 18 mm chain: F = d + 3,0 c) for 22, 24 and 26 mm chains: F = d + 4,0 A.6 Groove centreline to the ins
40、ide face of the sprocket recess, G The distance from the groove centreline to the inside face of the sprocket recess is given by the equation G = b t (0,5e + 0,5V u+ 3,5) where b t is the distance from the chain centre to the hole centre of the shackle connector; e is the diameter of the nut across
41、opposing corners; V u is the clearance between the bolt and hole of the shackle connector. Dimension G shall be maintained in the vicinity of the nut and bolt only. A.7 Root radius, H The root radius is given by the equation H = 0,5d A.8 Pocket plan radius (nominal), J The nominal pocket plan radius
42、, J, is the maximum outer radius of the shackle connector, measured on a line K + 0,5d from the sprocket centreline. NOTEIf a working clearance is required it will be provided by agreement between the purchaser and the manufacturer. A.9 Height from the sprocket centre to the bottom of the pocket, K
43、The height from the sprocket centre to the bottom of the pocket is given by the equation The values for K obtained shall be taken to the nearest half millimetre. A.10 Length of pocket, L The length of pocket is given by the equation L = 1,075 P + 2d a) for a chain of 14 50 : 6 b) for a chain of 18 6
44、4 : 8 c) for a chain of 22 86 : 10 d) for a chain of 24 86 : 11 e) for a chain of 24 87,5 : 11 f) for a chain of 26 92 : 12 360 2N - =BS6592:1985 BSI 12-1999 7 A.11 Tooth stub thickness (reference dimension only), L 1 The tooth stub thickness is given by the equation L 1= (2K + d) sin M cos + d wher
45、e M gives the centres of the pockets (seeclauseA.12). A.12 Pocket centres (reference), M The pocket centres are given by the equation M = 1,075 P + d A.13 Tooth flank radius (reference), R The tooth flank radius is given by the equation R = P 1,5d The radius shall be measured from a line which is a
46、distance K + 0,5d from the sprocket centreline. A.14 Groove radius, R 1 The groove radius is given by the equation R 1= 0,5d A.15 Radius at the root of the tooth stub, S The radius at the root of the tooth stub is given by the equation S = 0,5d A.16 Pocket gap, T Sprockets complying with this Intern
47、ational Standard provide adequate support for the links in the pockets and clearance for connectors and scraper bars, by specifying maximum values for L 1 . However, for certain heavy duty drives, it may be necessary to increase the link-bearing surfaces. In such cases, dimension T may be introduced
48、 and specified, with overriding, resultant adjustments to the value L 1 , subject to agreement between the purchaser and manufacturer.8 blankBS6592:1985 BSI 12-1999 Publications referred to See national foreword.BS 6592:1985 ISO5613:1984 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsIn
49、stitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if an
