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1、DRAFT FOR DEVELOPMENT DD 222:1996 Specification for Rack and pinion lifts Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 06:26:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 222:1996 This Draft for Development, having been prepared under the direction of the
2、Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1996 BSI 03-2000 The following BSI reference relates to the work on this Draft for Development: Committee reference MHE/4 ISBN 0 580 24510 1 Committees responsible for this Draft for De
3、velopment The preparation of this Draft for Development was entrusted to Technical Committee MHE/4, upon which the following bodies were represented: Associated Offices Technical Committee Association of District Councils British Broadcasting Corporation British Lift Association British Retail Conso
4、rtium British Telecommunications Plc Chartered Institution of Building Services Engineers Chartered Institution of Environmental Health Department of the Environment (Building Research Establishment) Department of Trade and Industry (Standards Policy Unit) Electrical, Electronic, Telecommunications
5、and Plumbing Union Engineering Surveyors Section of the MSF Health and Safety Executive Independent Engineering Insurers Committee Institution of Electrical Engineers Institution of Incorporated Executive Engineers Institution of Mechanical Engineers Institution of Plant Engineers Lloyds Register of
6、 Shipping London Underground Ltd. National Association of Lift Makers Post Office Royal Association for Disability and Rehabilitation Coopted members Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 06:26:2
7、9 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 222:1996 BSI 03-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2References1 3Definitions1 4Units and symbols2 5Lift well2 6Location and requirements for machinery and control equipment5 7Landing doors6 8Car and counterw
8、eight11 9Rack and pinion system, counterweight suspension, safety gear and overspeed governor15 10Guides, buffers and final limit switches22 11Clearance between car and lift well wall, and between car and counterweight23 12Lift machine24 13Electrical installation and appliances26 14Protection agains
9、t electrical faults; controls; priorities28 15Notices and operating instructions31 16Test, examination and technical data32 17Servicing32 Annex A (normative) Test procedures for type examination33 Annex B (informative) Operations (and subclauses where they are specified) which require the use of an
10、electrical safety device41 Annex C (normative) Test and examination of rack and pinion lifts41 Figure 1 Types of landing door7 Figure 2 Unlocking triangle11 Figure 3 Rack/pinion radial engagement17 Figure A.1 Examples of the engagement of the locking elements36 Table 1 Car floor area related to rate
11、d load12 Table 2 Car floor area related to number of passengers12 Table 3 Governor tripping speeds21 Table A.1 Model type-examination certificate34 Table C.1 Certificate of test and examination for rack and pinion lifts43 Table C.2 Certificate for periodic examination of rack and pinion lifts60 List
12、 of referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 06:26:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 222:1996 ii BSI 03-2000 Foreword This Draft for Development has been prepared under the direction of the Engineering Sector Boa
13、rd to meet the needs of the lift industry for a publication to cover the safety requirements for rack and pinion lifts and their testing and examination at the time of commissioning. It was originally intended to publish the body of this draft as Part 4 of BS 5655 and its Annex C as a sub-section of
14、 Part 10 of BS 5655, but due to the emergence of such work within European standardization and the standstill agreement between members of CEN not to publish standards on subjects within the work programmes of CEN Technical Committees, this course of action was invalidated. However, the recognition
15、that some guidance was required by the lift industry on, particularly, the testing and examination of rack and pinion lifts at the time of commissioning, has resulted in the information contained within the draft being made available in the form of a Draft for Development. It is being issued in the
16、Draft for Development series of publications and is of a provisional nature because the preparation of a European Standard on the subject is anticipated, which, on its publication, will be implemented as a British Standard. A copy of this draft has been offered to the responsible CEN committee and w
17、ill form the basis of the UK input to this work. This Draft for Development should be applied on this provisional basis, so that information and experience of its practical application may be obtained. This publication is not to be regarded as a British Standard A review of this Draft for Developmen
18、t will be carried out not later than 2 years after its publication. Notification of the start of the review period, with a request for the submission of comments from users of this Draft for Development, will be made in an announcement in the appropriate issue of BSI News. Observations which it is f
19、elt should receive attention before the official call for comments will be welcomed. These should be sent to the Secretary of BSI Technical Committee MHE/4, 389, Chiswick High Road, London W4 4AL. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1
20、to 64, 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. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 0
21、6:26:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 222:1996 BSI 03-20001 1 Scope This Draft for Development specifies safety requirements for rack and pinion driven passenger/goods lifts permanently installed in buildings. 2 References 2.1 Normative references This Draft for Development incorpora
22、tes, by reference, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on the inside back cover. Subsequent amendments to, or revisions of, any of these publications apply to this Draft fo
23、r Development only when incorporated in it by updating or revision. 2.2 Informative references This Draft for Development refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cove
24、r, but reference should be made to the latest editions. 3 Definitions For the purposes of this Draft for Development the definitions given in BS 5655-5 apply together with the following: 3.1 available car area area of the car measured at a height of 1.0 m above floor level, disregarding handrails, w
25、hich is available for passengers or goods during use of the lift 3.2 buffer a resilient stop at the end of travel, and comprising a means of braking using fluids or springs (or other similar means) 3.3 car apron an apron having a smooth vertical part extending downwards from the sill of the car entr
26、ance 3.4 goods passenger lift a lift mainly intended for the transport of goods, which are generally accompanied by persons 3.5 guides the components which provide guiding for the car sling or the counterweight, if there is one 3.6 instantaneous safety gear a safety gear in which the full arresting
27、action is immediate 3.7 instantaneous safety gear with buffered effect a safety gear in which the full arresting action is almost immediate, but the reaction on the car or counterweight is limited by presence of an intermediate buffering system 3.8 levelling an operation which improves the accuracy
28、of stopping at landings 3.9 lift permanent lifting equipment serving defined landing levels, comprising a car, whose dimensions and means of construction clearly permit the access of persons; running on rigid vertical guides or guides whose inclination to the vertical is less than 15 3.10 lift car a
29、 part of the lift which carries the passengers and/or other loads 3.11 lift machine the unit including the motor which drives and stops the lift 3.12 minimum breaking load of a rope this load is the product of the square of the nominal diameter of the rope (in square millimetres) and the nominal ten
30、sile strength of the wires (in newtons per square millimetre) and a coefficient appropriate to the type of rope construction as given in BS 302-4 3.13 overspeed governor a device which, when the lift car attains a predetermined speed, initiates a stoppage of the lift car 3.14 passenger any person tr
31、ansported by a lift 3.15 pit the part of the well situated below the lowest landing level served by the car Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 06:26:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 222:1996 2 BSI 03-2000 3.16 progressive safety gear
32、 a safety gear in which deceleration is effected by a progressive arresting action and for which special provisions are made so as to limit the forces on the car or counterweight to a safe value 3.17 pulley room a room in which pulleys are located and in which the overspeed governors and the electri
33、cal equipment may also be housed 3.18 rack and pinion lift a lift in which the movement of the car is achieved by meshing of the pinion, moving by rotation, on a fixed rack 3.19 rated load the load for which the equipment has been built and for which normal operation is guaranteed by the vendor 3.20
34、 rated speed the speed of the car for which the equipment has been built and for which normal operation is guaranteed by the vendor 3.21 re-levelling an operation after the lift has stopped, to permit the stopping position to be corrected during loading and unloading, if necessary by successive move
35、ments (automatic or inching) 3.22 safety factor the ratio, for a particular material under stated conditions, of the yield load to the highest load that may be imposed upon a member 3.23 safety gear a mechanical device for stopping and maintaining stationary the lift car with its rated load or count
36、erweight, in case of overspeeding in the downward direction 3.24 sling the metal framework carrying the car or counterweight, connected to the means of suspension NOTEThis sling may be integral with the car enclosure. 3.25 unlocking zone a zone, extending above and below the stopping level, in which
37、 the car floor shall be to enable the corresponding landing door to be unlocked 3.26 user a person making use of the services of a lift installation 3.27 well the space in which the car and the counterweight, if there is one, travels and which is bounded by the bottom of the pit, the walls and the r
38、oof of the well 4 Units and symbols 4.1 Units The units used are chosen from the International (SI) system of units. 4.2 Symbols 5 Lift well NOTEThe requirements of this clause relate to wells containing one or more lift cars. 5.1 General provisions The counterweight of a lift shall be in the same w
39、ell as the car. 5.2 Well enclosure 5.2.1 General Each well shall be totally enclosed by imperforate walls, floor and ceiling, as specified in 5.3. The only permissible openings in the enclosure are: a) openings for landing doors; b) openings for inspection and emergency doors to the well and inspect
40、ion traps; c) vent openings for escape of gases and smoke in the event of fire; d) ventilation openings; MeasurementSymbolUnit Standard acceleration of free fallgnm/s2 Rated speedvm/s Sum of the mass of the empty car and the masses of the portion of the travelling cables and any compensation devices
41、 suspended from the carPkg Rated loadQkg Total permissible mass(P + Q)kg Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 06:26:29 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD 222:1996 BSI 03-20003 e) permanent openings between the well and any pulley room. NOTE
42、When the well is not required to contribute to the protection of the building against the spread of fire, the following is acceptable: 1) to limit the height of the walls on faces other than the entrance faces, to a height of 2.5 m above any points normally accessible to persons; 2) at the entrance
43、faces of the well to use mesh or perforated panels upwards from a height of 2.5 m above landing level. These means of protection are not necessary if the car door is locked mechanically (see note 3 of 5.4.4). The dimensions of the mesh or perforations shall not exceed 75 mm measured horizontally or
44、vertically. 5.2.2 Inspection and emergency doors (inspection traps) 5.2.2.1 Inspection and emergency doors, and inspection traps to the well, shall not be provided except on grounds of safety to users or to provide access for servicing. Inspection doors shall have a minimum height of 1.4 m and a min
45、imum width of 0.60 m. Emergency doors shall have a minimum height of 1.8 m and a minimum width of 0.35 m. Inspection traps shall have a maximum height of 0.50 m and a maximum width of 0.50 m. 5.2.2.2 When the distance between consecutive landing doorsills exceeds 11 m, intermediate emergency doors s
46、hall be provided, such that the distance between sills is not more than 11 m. This provision is not necessary in the case of adjacent cars, in which case the cars shall each be fitted with an emergency door conforming to 8.10.3. 5.2.2.3 Inspection and emergency doors and inspection traps shall not o
47、pen towards the interior of the well. 5.2.2.4 The doors and traps shall be provided with a key-operated lock, capable of being reclosed and relocked without a key. Inspection and emergency doors shall be capable of being opened from inside the well without a key even when locked. 5.2.2.5 Operation o
48、f the lift shall depend on the maintenance of these doors and traps in the closed position. For this purpose electrical safety devices conforming to 14.1.2 shall be provided. The operation of the lift with an open inspection trap shall only be possible during inspection operations. This operation sh
49、all require continuous actuation of a device (only accessible when the trap is open) allowing the electrical safety device normally proving the closure of the trap to be shunted. 5.2.2.6 Inspection and emergency doors shall be imperforate and shall satisfy the same requirements for mechanical strength and fire resistance as the landing doors. 5.2.3 Ventilation of the well Provision shall be made, at the top of the well, for ventilation openings, with a minimum area of 1 % of the horizontal cross-section of the well to the outside either directly or through t
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