1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58belts Part 1: Anchorage location requirementsICS 65.060.10Tractors and machinery for agriculture Se
2、at BRITISH STANDARDBS ISO 3776-1:2006BS ISO 3776-1:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0 580 50064 0Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to
3、 include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 3776-1:2006. It part
4、ially supersedes BS 5453:1992, which will be withdrawn on publication of BS ISO 3776-2.The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tractors and forestry machinery.A list of organizations represented on AGE/6 can be obtained on request to its secre
5、tary.INTERNATIONALSTANDARDISO3776-1First edition2006-09-15Reference numberISO 3776-1:2006(E)Tractors and machinery for agriculture Seat belts Part 1:Anchorage location requirementsTracteurs et matriels agricoles Ceintures de scurit Partie 1: Exigences relatives lemplacement des ancragesBS ISO 3776-1
6、:2006iiiiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies(ISO member bodies). The work of preparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for wh
7、ich a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalElectrotechnical Commission (IEC) on all mat
8、ters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted by the technical committees are circulat
9、ed to the member bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. ISO shall not be held responsible fo
10、r identifying any or all such patent rights.ISO 3776-1 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture andforestry, Subcommittee SC 3, Safety and comfort of the operator.This first edition of ISO 3776-1, together with ISO 3776-2, cancels and replaces ISO 3776:19
11、89, of which itconstitutes a technical revision. Notably, it incorporates the following changes: the seat index point (SIP) is used as the reference point; the relative position of the anchorages has been aligned with ISO 6683; the strength testing of the anchorages is now dealt with exclusively by
12、ISO/OECD 3776-2.These modifications allow the alignment of ISO standards developed for different sectors and the harmonizationof strength testing of seat belts and their anchorages according to ISO and OECD.ISO 3776 consists of the following parts, under the general title Tractors and machinery for
13、agriculture Seatbelts: Part 1: Anchorage location requirements Part 2: Anchorage strength requirements joint publication with OECDBS ISO 3776-1:2006blank1Tractors and machinery for agriculture Seat belts Part 1:Anchorage location requirements1ScopeThis part of ISO 3776 specifies the location, relati
14、ve position and threaded hole dimensions of the anchoragesfor pelvic restraint (seat) belt assemblies intended to be used by the operators of agricultural tractors andself-propelled machinery.2 Normative referencesThe following referenced documents are indispensable for the application of this docum
15、ent. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO 5353, Earth-moving machinery, and tractors and machinery for agriculture and forestry Seat index point3 Terms and definitionsFor the p
16、urposes of this document, the following terms and definitions apply.3.1 anchorageprovision to transfer forces applied to the seat belt assembly to the structure of the tractor or the machine3.2 seat belt assemblybelt, including any buckle, length adjustor, retractor, and means for securing to an anc
17、horage, that fastensacross the pelvic area to provide pelvic restraint during operation and roll-over conditions3.3 seat belt systemseat belt assembly with anchorages4 Anchorages4.1 Choice of anchorage locationEach seat belt system shall have two anchorages. If the seat does not swivel or have a sus
18、pension system, theseat belt assembly may be anchored to the seat or the tractor/machine at any point within the hatched zoneshown in Figure 1.Alternatively, the seat belt assembly shall be attached to the anchorages on the seat near the rear corners ofthe seat cushion within the hatched zone shown
19、in Figure 1, such that the seat belt assembly moves with theseat cushion at all times.BS ISO 3776-1:20062Belts, cables, or similar flexible devices may be used to transfer seat belt assembly loads from the seatanchorages to the tractor or self-propelled machine.4.2 Relative position of anchorages4.2
20、.1 GeneralThe anchorages shall be positioned within the hatched zone shown in Figure 1 for example, below a line atto the horizontal and behind the vertical line, through the seat index point (SIP). The anchorages, B1andB2, shall be at a horizontal distance of not less than and not more than from th
21、e seatlongitudinal plane of symmetry. However, if the seat structure makes it necessary, this lower limit may bereduced, provided suitable arrangements have been made to ensure an appropriate spacing of the webbingwhere in contact with the operators body.Dimensions in millimetresKeyB1anchorage (righ
22、t side)B2anchorage (left side)1 preferred angle of webbing2 seat index point (SIP)Figure 1 Location and relative position of anchorages10175 mm 350 mmBS ISO 3776-1:200634.2.2 Seat index pointThe SIP (see Figure 1) shall be determined in accordance with ISO 5353, or its position with respect to the s
23、eatshall be as specified by the seat manufacturer.4.2.3 Webbing angle to horizontalThe angle of the webbing to the horizontal plane shall be as near as possible to for all normal drivingpositions of the seat. The angle may vary from , nevertheless, in no driving position shall it be less than or gre
24、ater than . See Figure 1.4.3 Dimension of anchorage threaded holesAn anchorage shall consist of a threaded hole of 7/16-20 UNF 2 B. The axis of the threaded hole shall be atto the seat longitudinal plane of symmetry.Where a seat belt is designed, fitted and supplied with the tractor or machine by th
25、e tractor/machinemanufacturer, alternative thread sizes, for example, 1/2-13 UNC 2A or M12, may be used, provided theanchorages supplied comply with all the other requirements of this part of ISO 3776.4.4 Equivalence with ISO 6683Seat belt anchorages fulfilling the relevant requirements of ISO 6683
26、are also in conformance with this part ofISO 3776.4545107590 5BS ISO 3776-1:20064Bibliography1 ISO 6683, Earth-moving machinery Seat belts and seat belt anchorages Performance requirementsand testsBS ISO 3776-1:2006blankBS ISO BSI389 Chiswick High RoadLondonW4 4AL3776-1:2006BSI British Standards Ins
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