1、BRITISH STANDARD BS 5822:1979 ISO 5679:1979 Specification for Agricultural discs: classification, main fixing dimensions and general requirements ISO title: Equipment for working the soil Disks Classification, main fixing dimensions and specifications UDC 631.316.5.02BS5822:1979 This British Standar
2、d, having been prepared under the directionof the Agricultural Machinery and Implement Standards Committee, was published under the authorityofthe Executive Boardand comes into effect on 31 December 1979 BSI 12-1999 The following BSI references relate to the work on this standard: Committee referenc
3、e AGE/5 Draft for comment 77/73113 DC ISBN 0 580 11065 6 Cooperating organizations The Agricultural Machinery and Implements Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industr
4、ial organizations: Agricultural Engineers Association* Agricultural Machine Parts Export Association* British Agricultural and Garden Machinery Association Ltd. British Lawn Mower Manufacturers Federation Department of Industry (Mechanical Engineering) Health and Safety Executive Institution of Agri
5、cultural Engineers Incorporated Ministry of Agriculture, Fisheries and Food* National Farmers Union* National Institute of Agricultural Engineering* Royal Welsh Agricultural Society The organizations marked with an asterisk in the above list, together with the following, were directly represented on
6、 the committee entrusted with the preparation of this British Standard: National College of Agricultural Engineering Amendments issued since publication Amd. No. Date of issue CommentsBS5822:1979 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii 0 Introduc
7、tion 1 1 Scope 1 2 Field of application 1 3 Reference 1 4 Classification 1 5 Specification 1 National appendix A Equipment for working the soil Dimensions of flat disks Type A 8 Figure 1 Concave disks with square centre hole Type B, variant 1 4 Figure 2 Concave disks with round centre hole Type B, v
8、ariant 2 5 Figure 3 Concave disks with several fixing holes Type B, variant 3 6 Figure 4 Concave disks with a flat area around the central hole square Type C 7 Figure Flat disks Type A 10 Table 1 Concave disks Type B, variants 1 and 2, and type C 2 Table 2 Concave disks Type B, variant 3 2 Table 3 T
9、olerances for eccentricity and wobble of disk types B and C 3 Table Flat disks Type A 9 Publications referred to Inside back coverBS5822:1979 ii BSI 12-1999 National foreword This British Standard, prepared under the direction of the Agricultural Machinery and Implement Standards Committee, is ident
10、ical with ISO5679 “Equipment for working the soil Disks Classification, main fixing dimensions and specifications” published by the International Organization for Standardization (ISO). Terminology and conventions. The text of the International Standard has been approved as suitable for publication,
11、 without deviation, as a British Standard. Some terminology and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a ful
12、l 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”. The information referred to in ISO/TR4122 is given asNational appendix A. A British Standard does not purport to include all the n
13、ecessary 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. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pa
14、ges1 to 10, 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 amendment table on the inside front cover.BS5822:1979 BSI 12-1999 1 0 Introduction The main purpose of this International Sta
15、ndard is to ensure interchangeability for a minimum number of types and sizes of disks to meet the requirements of a wide range of conditions of work. The standard specifies three types of disks. This division into distinct designs of disks was found to be preferable to classification according to u
16、se with a particular implement, because of lack of clear demarcation in usage of the various designs. It will be appreciated that some apparent irregularities in sequence of nominal size or dimensions in the tables arises from different fields of usage of a particular type of disk. The dimensional t
17、olerances given are not unnecessarily tight and are consistent with the requirements of interchangeability. 1 Scope This International Standard specifies interchangeability dimensions for agricultural disks of the same type and nominal size, classified as types A, B and C. 2 Field of application Thi
18、s International Standard is applicable to disks as working parts of ploughs, harrows and disk-tillers. 3 Reference ISO/TR 4122, Equipment for working the soil Dimensions of flat disks Type A. 4 Classification Disks shall be classified as follows: Type A Flat disks (see ISO/TR4122) Type B Concave dis
19、ks which may have the following variants: Variant 1 disks with square centre hole (seeFigure 1) Variant 2 disks with round centre hole (seeFigure 2) Variant 3 disks with several fixing holes (seeFigure 3) with or without centre hole Type C Concave disks with a flat area around the centre hole square
20、 (seeFigure 4). NOTEAll variants of disks may have cutouts. 5 Specification 5.1 Nominal dimensions The nominal dimensions of the disks shall be as given inTable 1 for concave disks with centre hole, and inTable 2 for concave disk with several fixing holes. 5.2 Cutting edge bevelling Flat disks shall
21、 have the cutting edge bevelled on both sides. The concave disks shall be bevelled on either the concave or the convex side. The thickness of the edge shall not be greater than0,8mm. 5.3 Eccentricity and wobble Eccentricity and wobble of flat disks, type A, shall not exceed0,5% of the outside diamet
22、er of the disk. Eccentricity and wobble of disks type B and C shall not exceed the tolerances given inTable 3. 5.4 Flatness 5.4.1 Distortion of flat disks, type A, when the disk is laid on a flat surface shall not exceed: 1,6 mm for disks with diameters up to and including510mm; 2,5 mm for disks wit
23、h diameters over510mm. 5.4.2 Distortion of concave disks, type B, shall not exceed5mm when the disk is laid on a flat surface. Local distortions of the disk edge, at not more than three points, shall not exceed0,3% of the outside diameter of the disk. Local distortions shall be measured radially.BS5
24、822:1979 2 BSI 12-1999 Table 1 Concave disks Type B, variants 1 and 2, and type C Table 2 Concave disks Type B, variant 3 Dimensions in millimetres Nominal diameter Size of square hole Diameter of round hole Radius of concavity Height of concavity Thickness d 1 10 a d 2 R t a s 300 26 30 500 23 2-3
25、350 26 30 500 32 3-4 400 26 33 550 38 3-4 31 35 450 29 33 600 44 3-4 31 65 (26) 500 26 33 600 55 4-5 31 65 550 31 33 600 67 4-5 65 600 31 40 600 80 4-6 41 65 650 31 46 650 87 6-8 41 65 (33) 700 51 65 650 102 6-8 750 51 65 650 119 8 NOTE 1Flat area diameter of concave disk, type C, is to be equal to2
26、5% of nominal diameter. Tolerance for radius of concavity 5% of R. NOTE 2Dimensions in parentheses () are non preferred. a Dimension t for reference. Dimensions in millimetres Nominal diameter Fixing holes Radius of concavity Height of concavity Thickness P.C.D. Size of square hole Diameter of round
27、 hole Number d 1 10 d 4 a d 3 R t a s 400 90 11 11 3 600 34 3-5 450 90 11 11 3 600 34 3-5 600 230 13 13 4 600 80 5-7 270 650 230 13 (11) 13 (11) 4 600 96 5-7 270 (6) (230) 700 230 13 (17) 13 (17) 4 700 94 6-8 270 (222) 750 270 13 (11) 13 (11) (4) 700 109 6-10 (280) 6 355 800 280 13 (11) 13 (11) 6 70
28、0 126 8-12 355 (270) NOTE 1Tolerance for radius of concavity 5% of R. NOTE 2Dimensions in parentheses () are non preferred. a Dimension t for reference.BS5822:1979 BSI 12-1999 3 Table 3 Tolerances for eccentricity and wobble of disk types B and C Dimensions in millimetres Nominal diameter Eccentrici
29、ty Wobble d 1 max. max. 400 2 4 450 2 4 500 3 5 550 3 5 600 4 8 650 4 8 700 6 8 750 6 10 800 6 10BS5822:1979 4 BSI 12-1999 Figure 1 Concave disks with square centre hole Type B, variant 1BS5822:1979 BSI 12-1999 5 Figure 2 Concave disks with round centre hole Type B, variant 2BS5822:1979 6 BSI 12-199
30、9 Figure 3 Concave disks with several fixing holes Type B, variant 3BS5822:1979 BSI 12-1999 7 Figure 4 Concave disks with a flat area around the central hole square Type CBS5822:1979 8 BSI 12-1999 National appendix A Equipment for working the soil Dimensions of flat disks Type A Technical Report4122
31、 was drawn up by Technical Committee ISO/TC23, Tractors and machinery for agriculture and forestry, and approved by the majority of its members. It is based on a proposal to standardize the classification of the principal fixing dimensions and specifications for agricultural disks to ensure intercha
32、ngeability for a minimum number of types and classes of disks adapted to the requirements of a broad range of working conditions. However, only one part of this proposal, subclause5.1, Nominal dimensions, relating to Type A disks, is covered in this Technical Report. The principal fixing dimensions
33、and the number of these still have to be specified bearing in mind that the values for the “nominal diameters” D and “thickness” b have been agreed. The other part of the proposal is covered in ISO5679. In May 1977, this document was submitted to the ISO Council, which approved its publication as a
34、Technical Report. 0 Introduction See ISO5679. 1 Scope See ISO5679. 2 Field of application See ISO5679. 3 Reference ISO 5679, Equipment for working the soil Disks Classification, principal fixing dimensions and specifications. 1) 4 Classification See ISO5679. 5 Specifications 5.1 Nominal dimensions T
35、he nominal dimensions recommended for disks in the Table are those given for type A flat disks. 5.2 Cutting edge bevelling See ISO5679. 5.3 Eccentricity and wobble See ISO5679. 5.4 Flatness See ISO5679. 1) At present at the stage of draft.BS5822:1979 BSI 12-1999 9 Table Flat disks Type A Dimensions
36、in millimetres Nominal diameter Central hole diameter Fixing holes Thickness P.C.D. Diameter Number D 10 d d 1 d 2 b a 250 42 60 8 3 2,5-3,5 64 6,5 300 48 70 10,7 3 2,5-3,5 6,5 350 32 92 6,6 5 2,5-4,0 50 85 10,7 3 65 70 8,5 4 400 50 85 10,7 4 4-6 60 85 9,0 4 65 100 8,5 6 75 100 10,7 4 450 50 85 10,7
37、 4 4-6 65 85 8,5 6 75 100 10,7 4 80 105 11 4 500 50 85 10,7 4 5-8 65 85 8,5 6 75 100 10,7 4 80 125 11 4 550 50 85 10,7 4 5-8 65 130 8,5 6 75 100 10,7 4 105 125 11 4 600 75 100 10,7 6 5-8 105 130 13 6 800 105 150 15 6 8 a Values D and b have already been agreed.BS5822:1979 10 BSI 12-1999 Figure Flat
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