BS 2655-8-1971 Specification for lifts escalators passenger conveyors and paternosters Modernization or reconstruction of lifts escalators and paternosters《电梯、自动扶梯、自动人行道与链斗式提升机规范 第.pdf

1、BRITISH STANDARD BS2655-8: 1971 Incorporating Amendment Nos. 1 and 2 Specification for Lifts, escalators, passenger conveyors and paternosters Part 8: Modernization or reconstruction of lifts, escalators and paternosters UDC 621.876BS2655-8:1971 This British Standard, having been approved by the Mec

2、hanical Engineering Industry Standards Committee, was published under the authority of the Executive Board on 19March1971 BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference MEE/49 Draft for comment70/3855 ISBN 580 06468 9 Co-operating organizations The

3、Mechanical Engineering Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committee* Engineering Equipment Users Asso

4、ciation* Association of Consulting Engineers Gas Council Association of Mining Electrical and Institution of Plant Engineers Mechanical Engineers Institution of Civil Engineers British Chemical Plant Manufacturers Institution of Gas Engineers Association Institution of Heating and Ventilating Britis

5、h Compressed Air Society Engineers British Electrical and Allied Manufacturers Institution of Mechanical Engineers* Association* Institution of Mechanical Engineers British Gear Manufacturers Association (Automobile Division) British Internal Combustion Engine Institution of Production Engineers Man

6、ufacturers Association Locomotive and Allied Manufacturers British Mechanical Engineering Association of Great Britain Confederation London Transport Executive* British Pump Manufacturers Association Machine Tool Trade Association British Steel Industry Ministry of Defence Crown Agents for Oversea G

7、overnments and Ministry of Defence, Army Department Administrations National Coal Board Department of the Environment* National Physical Laboratory (Ministry of Department of Employment and Productivity Technology) (H.M. Factory Inspectorate)* Royal Institute of British Architects Department of Trad

8、e and Industry Telecommunication Engineering and Electricity Council, the Central Electricity Manufacturing Association Generating Board and the Area Boards in Water-tube Boiler Makers Association England and Wales The Government departments and scientific and industrial organizations marked with an

9、 asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Railways Board Fire Offices Committee County Councils Association Greater London Council Department of Health and Social Security Inst

10、itution of Electrical Engineers Electrical, Electronic, Telecommunications, Institution of Municipal Engineers Plumbing Trades Union, EET/PTU Mechanical Handling Engineers Association Engineers Surveyors Association National Association of Lift Makers Federation of Wire Rope Manufacturers of Post Of

11、fice Great Britain Retail Trading Standards Association Amendments issued since publication Amd. No. Date Comments 1575 October 1974 3019 May1979 Indicated by a sideline in the marginBS2655-8:1971 BSI 06-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 Elect

12、ric lifts 1 3 Hydraulic lifts 5 4 Escalators 8 5 Paternosters 9 Appendix A Check list for the major modernization or reconstruction of electric lifts 10 Appendix B Check list for the major modernization or reconstruction of hydraulic lifts 12BS2655-8:1971 ii BSI 06-1999 Foreword In order to keep abr

13、east of progress in the industries concerned, British Standards are subject to periodical review. Suggestions for improvements will be recorded and in due course brought to the notice of the committees charged with the revision of the standards to which they refer. A complete list of British Standar

14、ds, numbering over9,000, fully indexed and with a note of the contents of each, will be found in the BSI Catalogue which may be purchased from BSI Sales Department. The Catalogue may be consulted in many public libraries and similar institutions. This British Standard, prepared under the authority o

15、f the Mechanical Engineering Industry Standards Committee, is a revision of and supersedes the1965 edition ofBS2655, which was entitled “Electric lifts”. The new title reflects the extension of the scope of this British Standard. An amendment to Part2 of this standard has been published, and impleme

16、nts the change in title. The revised Parts1 and3 and additional new Parts are being published separately and, together with Part2, are as follows: Part 1: General requirements for electric, hydraulic and hand-powered lifts. This Part is basically a revision of the1958 edition of BS2655-1, without th

17、e building requirements and list of definitions, and extended to cover the engineering and safety requirements for new hydraulic and hand-powered lifts as well as for new electric lifts. Part 2: Single-speed polyphase induction motors for driving lifts. This Part covers the type of electric motor sp

18、ecially designed for driving lifts. It should be used in conjunction with BS2613 1)and gives additional requirements including the class of lift rating and special limits of temperature rise. Part 3: Arrangements of standard electric lifts. This Part gives standard dimensions for lift wells and mach

19、ine rooms in relation to lift capacity, speed and car internal sizes, for seven classes of lifts. Part 4: General requirements for escalators and passenger conveyors. This Part specifies engineering and safety requirements for escalators and passenger conveyors. The latter may be described as machin

20、es in which the passenger carrying surfaces remain parallel to the direction of motion and are uninterrupted. Part 5: General requirements for paternosters. This Part specifies engineering and safety requirements for paternosters which may be described as machines where series of cars axe continuous

21、ly running in closed loops, and are characterized by the car floors remaining substantially horizontal when the direction of motion is reversed at the extremities of car travel. Part 6: Building construction requirements. This Part specifies structural and fire resistance requirements for the equipm

22、ent covered by Parts1,4 and5. Part 7: Testing and inspection. This Part specifies tests, examination and certification of new and modified equipment covered by Parts1,4 and5. Part 8: Modernization or reconstruction of lifts, escalators and paternosters. This Part specifies engineering and safety req

23、uirements. Part 9: Definitions. This Part gives definitions of terms used in the remainder of the standard. Part 10: General requirements for guarding. This part specifies requirements for the guarding of moving parts and protection against hazards from electrical equipment. It relates to equipment

24、covered in Parts1,4 and5. CP407:1972, British Standard Code of Practice for electric, hydraulic and hand-powered lifts. The code gives general information and guidance for planning, purchasing, installation and maintenance of passenger, goods and service lifts. 1) BS2613, “The electrical performance

25、 of rotating electrical machinery”.BS2655-8:1971 BSI 06-1999 iii In case of difficulty in classifying any equipment in accordance with the headings of Parts1,4 and5, reference should be made to the relevant definitions in Part9. This Part specifies engineering and safety requirements relevant to the

26、 modernization or reconstruction of lifts, escalators and paternosters, and is the first issue of BS2655 which covers this aspect. Throughout this Part of this standard the metric and imperial systems of units are used side by side, but it is important that each contract shall either use the imperia

27、l system throughout or the metric system throughout. A mixture of the two may lead to complications, particularly in relation to ratings of lifts and lift speeds. Such modernization or reconstruction of existing lifts as is commissioned before31 May1984, for use in existing buildings that were built

28、 before31May1979, are permitted to be in accordance with either this standard or BS5655-1. After31 May1984, the requirements of BS5655-1 only are applicable unless it can be shown that, owing to space limitations, compliance is not reasonably practicable. Special provisions are permissible to meet c

29、ertain site conditions often present in buildings that have been in use for many years. It is intended that the use of new equipment should not automatically be restricted because certain site conditions are now more rigorous than formerly. A British Standard does not purport to include all the nece

30、ssary 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, pagesi toiv, pages1to

31、13 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 theinside front cover.iv blankBS2655-8:1971 BSI 06-1999 1 1 Scope This Part of the British Standard deals with the engineering and safet

32、y requirements to be incorporated when modernizing and/or reconstructing lifts, escalators and paternosters with the object that parts affected by such changes shall comply with Parts1,4 or5 of this standard as far as it is reasonably practicable to do so. Where it is not reasonably practicable to c

33、omply, provision is made in this Part to allow such deviations as will secure a minimum acceptable standard of safety having regard to circumstances affecting the installation. In other words, it is the intention of this Part to be constructive rather than restrictive, and to allow an installation o

34、f reasonable standard to be modernized or reconstructed in stages as necessary. In the case of completely new installations replacing those existing, special provisions are made to meet certain site restrictions which are often present in buildings that have been in use for many years. These are mad

35、e so that the use of new equipment is not automatically restricted because certain site requirements are now more rigorous than formerly. In cases where a lift, escalator or paternoster is moved to a different location, it is not deemed as an alteration, and the equipment, when reinstalled, shall co

36、mply with all the requirements of Part1 of this standard. Appendix A is a check list which summarizes, for electric lifts, the major alterations covered by this part of the standard and the consequent requirements affecting various parts of the installation. Appendix B provides a similar summary in

37、respect of hydraulic lifts. 2 Electric lifts 2.1 Requirements for the major alterations defined in2.2 All lifts undergoing major alterations shall comply with the requirements of this standard in the following respects: 1) The lift machine shall be provided with an electrically released brake to con

38、form to Part1,2.15.4 and2.15.5. 2) An electrical switch shall be provided for the car door or gate and the switch, together with its connections, shall conform to Part1,2.9.1 and its note; but it is not a mandatory requirement that the car door or gate shall be locked while the car is in motion. 3)

39、An electrical switch shall be provided on the safety gear and/or on the governor to conform to Part1,2.12.1 6) and2.13.5. 4) The car emergency devices shall conform to Part1,2.10. 5) Car and landing collapsible gates shall, where permitted, conform to2.3.2 and2.3.3 of this Part8. 6) The machine room

40、 shall be secured against unauthorized access, and a danger notice shall be fitted to the outside of the door to conform to Part6,2.4.4. 7) Adequate artificial lighting shall be provided in the machine room to conform to Part6,2.4.3. 8) The lift well construction shall comply with Part6,2.2.2 except

41、 that where fire regulations permit the use of wire grille or similar construction material, the mesh or opening shall not be greater than30mm or1 in and of sufficient strength to resist, without undue material deformation, the accidental impact by users of the staircase or adjoining floors, or by m

42、aterials or trucks being moved in the vicinity. Where the clearance between the inside of an open type lift well enclosure and any moving or movable part of the lift equipment or apparatus is less than100mm or4in, the mesh or openings in the enclosure shall be further protected by netting of square

43、mesh not greater than12mm or in and made of wire not smaller than0.9mm or0.036in. 9) The counterbalance shall be checked against possible car modifications since the original installation. 10) There shall be provision for the opening of a landing door by an authorized person by means of an emergency

44、 key, irrespective of the position of the lift car. 11) It may not be possible in every case to comply with the car bottom clearance requirements in full as specified in Part1,2.3.1. However, every endeavour should be made to do so. 12) Bottom runby for lifts with counterweights, as specified in Par

45、t1,2.3.2, is required for reliable operation. However, if these requirements cannot be met in full, the runby may be reduced. 13) If the car top clearance cannot be made to satisfy the requirements of Part1,2.3.5, or2.3.6 a warning notice shall be displayed on the car top, adjacent to the mechanics

46、control station, and indicating “Reduced overhead clearance”. 14) Reduced stroke oil buffers may be used for lifts having speeds of2.5m/s or500ft/min or more, provided that in all other respects they comply with Part1,2.2.2.BS2655-8:1971 2 BSI 06-1999 15) Where the car capacity does not conform to t

47、he requirements of Part1,2.11, and where it is not required to do so by any of the following major alterations, an exemption (regularly renewable) shall be obtained from an appropriate authority before a new test certificate (when required by Part8,6.1) is issued. The load plate shall, in all cases,

48、 conform to Part1,2.17. 16) Where a major alteration involves a change or an addition to the wiring of the installation, the main switches and wiring of the completed installation shall conform to Part1,2.20 and2.22. 17) Locking devices for landing entrances shall conform to Part1,2.9. 2.2 Specific

49、requirements for major alterations 2.2.1 General. The following shall be considered as major alterations and, in addition to the requirements of2.1, the completed installation shall conform to the requirements of2.2.2 to2.2.18: 1) Change in rated speed (see2.2.2) 2) Change in rated load (see2.2.3) 3) Change in dead weight of car (see2.2.4) 4) Change in travel (see2.2.5) 5) Change in size or type of guides (see2.2.6) 6) Replacement of car or counterweight safety gear (see2.2.7) 7) Addition of top of car control station (see2.2.8) 8) Change to roller guide shoes (see2