1、Safety Standard for Belt ManliftsAN AMERICAN NATIONAL STANDARDASME A90.1-2009(Revision of ASME A90.1-2003)Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME A90.1-2009(Revision of ASME A90.1-200
2、3)Safety Standardfor Belt ManliftsAN AMERICAN NATIONAL STANDARDCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: April 30, 2009The next edition of this Standard is scheduled for pu
3、blication in 2014. This Standard will becomeeffective 1 year after the Date of Issuance. There will be no addenda or written interpretations of therequirements of this Standard issued to this edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standa
4、rd was developed under procedures accredited as meeting the criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate. The proposed code or s
5、tandard was madeavailable for public review and comment that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not ta
6、ke any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent, nor assumes any such liability. Users of
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8、overnment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies, which precludes the issuance of interpretations by individualsNo part of this document may be
9、reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in
10、 U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword ivCommittee Roster vCorrespondence With the A90 Committee . viSummary of Changes vii1 General 12 References . 13 Definitions
11、 . 14 General Requirements . 25 Mechanical Requirements . 126 Instruction and Warning Signs . 197 Operating Rules 208 Tests and Inspections . 20Figures1 Typical Floor Openings for 14 in. (355 mm) Belts 32 Guardrail and Wall . 43 Guardrail or Screened Enclosure 54 Example of Maze Entrance to Manlift
12、. 65 Fixed-Type Underfloor Hoods and Guardrail 76 Typical Pit Location Detail (for New Installations) . 97 Typical Lower Landing Detail 108 Head Shaft Dimensions Top Landing 119 Distance Between Handhold and Step 1310 Typical Butt Splice Detail . 1511 Typical Lap Splice Detail . 1612 Typical Mechani
13、cal Splice Detail 17Tables1 Allowable Size for Floor Openings 22 Rubber Manufacturers Association Tolerances for Width of Belting 143 Belt Breaking Strength 144 Minimum Number of Bolts . 14Mandatory AppendicesI Recommended Training Program for Manlift Passengers . 23II Belt Manlift Inspection Report
14、 (Weekly and Monthly) . 24iiiCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORDThis is a revision of A90.1, Safety Code for Manlifts, which was originally drawn up andapproved in 1949 and re
15、affirmed in 1956. The original Sectional Committee consisted of 19members representing manufacturers, users, insurance groups, enforcement officials, and indepen-dent specialists.Work was started in 1966 on a revision of this Standard. Each provision of the original codewas carefully evaluated in th
16、e light of considerable practical field experience. A draft revisionwas completed in 1967 and approved by letter ballot in 1968. The USA Standards Institute (nowcalled the American National Standards Institute) approved the revised standard onFebruary 7, 1969.Prompted by several serious manlift acci
17、dents, the Committee, through correspondence in1970, considered additional changes to the 1969 standard. Subsequently, in 1972, the Committeeissued ANSI A90.1a-1972, a supplement to ANSI Standard A90.1-1969.In 1972, new committee officers were appointed and committee membership was expandedto includ
18、e new members, many of whom have since made significant contributions to the workof the A90 Standards Committee.Due to changes in technology and the desire to maximize manlift safety, the Committee setabout the task of totally revising the A90.1 Standard. This was accomplished only with a greatdeal
19、of individual member research and study, coupled with numerous meetings of the entireCommittee. After three years of concentrated work, the Committee approved by ballot, in 1976,a completely revised draft of the A90.1 Standard. Subsequently, this draft was approved by theAmerican National Standards
20、Institute for issuance as American National Standard A90.1-1976.In 1981, the A90 Standards Committee was converted from an American National StandardsCommittee to an ASME Accredited Organization Committee, operating under procedures devel-oped by ASME and accredited by ANSI. Several new members were
21、 added to the Committeein this process. After several years of work, a revision to ANSI A90.1-1976 was approved by theA90 Standards Committee and the sponsor organization, and was designated an AmericanNational Standard by the American National Standards Institute on September 10, 1985.A90.1-2003 wa
22、s approved by the American National Standards Institute on August 14, 2003.This revision was approved by the American National Standards Institute on March 23, 2009.ivCopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without li
23、cense from IHS-,-,-ASME A90 COMMITTEESafety Standards for Belt Manlifts(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSG. S. Cole, ChairW. E. Phillips, Jr., Vice ChairG. A. Burdeshaw, SecretarySTANDARDS COMMITTEE PERSONNELJ. E. Ande
24、rson, American Hoist and Manlift, Inc.J. Anderson, Alternate, American Hoist and Manlift, Inc.J. Atton III, Millwrights Order Department: 22 Law Drive, P.O.Box 2300, Fairfield, NJ 07007-2300NFPA 70-1984, National Electrical CodePublisher: National Fire Protection Association (NFPA),1 Batterymarch Pa
25、rk, Quincy, MA 02169-74713 DEFINITIONSbelt-breaking strength: the amount of tensile load pounds(Newtons) applied to a belt causing its fracture.belt travel: the distance between the centers of the topand bottom pulleys when the bottom pulley is at itshighest position.debris deflector: a protective s
26、hield positioned to deflectfalling objects away from the bottom pulley.elevator bolt: a flathead, countersunk elevator bolt asdefined by ASME B18.5-1990, Table 9.factor of safety: the ratio of the tensile strength of thematerial to the allowable stress when a part is subjectedto full-load operation.
27、handhold (handgrip): a cup-shaped device securelyattached to the belt, which can be grasped by the passen-ger to provide a means for maintaining balance.manlift: a power-driven endless belt that moves in onedirection only, and is provided with steps (platforms)Copyright ASME International Provided b
28、y IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME A90.1-2009Table 1 Allowable Size for Floor OpeningsMinimum Floor Maximum FloorBelt Width, Opening Width, Opening Width,in. (mm) in. (mm) in. (mm)12 (305) 28 (710) 36 (915)14 (355) 30
29、 (760) 38 (965)16 (405) 30 (760) 40 (1 015)GENERAL NOTE: The minimum and maximum distance from face ofbelt to edge of floor openings as shown in Fig. 1 is applicable to12-in. (305-mm) and 16-in. (405-mm) belts.and handholds for the transportation of personnel fromfloor to floor.rated speed: the spee
30、d of the belt at which the manlift isdesigned to run (refer to para. 5.4).safety stop device: any electrical or electromechanicaldevice (such as a limit switch, photoelectric eye, or prox-imity probe) that shall cause the electric power to beremoved from the driving machine motor and brakestopping t
31、he manlift.severe belt damage: the protective outer cover of a belt thatbecomes cut, cracked, or separated, exposing damagedinner fabric, and such damage that extends across thefull width of the belt or spans between adjacent boltholes. A torn belt is also considered severe.split-rail safety stop: a
32、n electric limit switch operatedmechanically by the rollers on the manlift steps.step (platform): a passenger carrying unit.superficial belt cover damage: the protective outer coverof a belt that becomes scratched, cut, or cracked,exposing the inner fabric. Such damage is not continuousacross the fu
33、ll width of the belt.torn: a severance of any length or width that goesthrough the entire thickness of the belt.4 GENERAL REQUIREMENTS4.1 Floor Openings4.1.1 Allowable Size. New installations shall haveminimum floor openings of 30 in. (760 mm) and maxi-mum floor openings of 36 in. (915 mm). Floor op
34、eningwidths for both the up- and down-runs for existinginstallations shall be in accordance with Table 1 andFig. 1.4.1.2 Uniformity. All floor openings for a givenmanlift shall be uniform in size and shall be approxi-mately circular, and each shall be located verticallyabove the opening below it.4.2
35、 Riding Clearance(a) There shall be no encroachment of any kind withinthe cylindrical space defined by the outer edges of thefloor openings for the entire run of the manlift.2(b) Should maintenance or construction work beplanned for in close proximity to the manlift causing anencroachment on the spa
36、ce defined in para. 4.2(a), themanlift shall be shut down during such work.4.3 Landings4.3.1 Vertical Clearance. The clearance between thefloor or mounting platform and the lower edge for theunderfloor hood above it required by para. 4.4 shall benot less than 7 ft 6 in. (2 285 mm). Where this cleara
37、ncecannot be obtained, no access to the manlift shall beprovided, and the manlift runway shall be enclosedwhere it passes through such floor. The enclosure shallbe equipped with an emergency exit.4.3.2 Clear Landing Space. The landing space adja-cent to the floor openings shall be free from obstruct
38、ionand kept clear at all times. The landing space shall beat least 2 ft (610 mm) in width from at least one edge(one, two, or three) of the floor opening used for mount-ing and dismounting (see Fig. 2, 3, or 4 for typical land-ing spaces).4.3.3 Lighting of Landings. Adequate lighting, notless than 5
39、 fc (54 lx), shall be provided at each floorlanding at all times when the lift is in operation.4.3.4 Landing Surface. The landing surface at theentrances and exits to the manlift shall be constructedand maintained to provide safe footing at all times.4.3.5 Emergency Landings. Where there is a travel
40、of 50 ft (15 m) or more between floor landings, one ormore emergency landing(s) shall be provided so thatthere is a landing (either floor or emergency) for every25 ft (7.5 m) or less of manlift travel.(a) Emergency landings shall be accessible from boththe up- and down-runs of the manlift and shall
41、giveaccess to the ladder as required in para. 4.8.(b) Emergency landings shall be provided with stan-dard railings and toeboards.(c) Platforms constructed to give access to bucket ele-vators or other equipment for the purpose of inspection,lubrication, and repair may also serve as emergencylandings
42、under this paragraph. All such platforms shallthen be considered part of the emergency landing andprovided with standard railings and toeboards.4.4 Hoods on Underside of Floor Openings4.4.1 Fixed Type. On the up-side of the manlift floor,openings shall be provided with an underfloor hoodmeeting the
43、following requirements (see Fig. 5):(a) Slope. The underfloor hood shall make an angleof not less than 45 deg with the horizontal.(b) Extent. The lower edge of this hood shall extendat least 44 in. (1 118 mm) outward from the face of thebelt. It shall not extend beyond the upper surface of thefloor
44、above.(09)Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME A90.1-2009Fig. 1 Typical Floor Openings for 14 in. (355 mm) Belts66 in. (1 675 mm) whenthere is less than24 in. (610 mm) to theedge o
45、f the floor opening34 in.(865 mm) min.24 in. 28 in.(610 mm) min. (710 mm) max.Face ofbelt38 in.(965 mm) max.DownUp24 in. 28 in.(610 mm) min.42 in. (1 065 mm)(710 mm) max.3Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted withou
46、t license from IHS-,-,-ASME A90.1-2009Fig. 2 Guardrail and Wall24 in. (610 mm) min.42 in. (1 065 mm)high guardrailSelf-closinggates24 in. (610 mm) min.24 in. (610 mm) min.Wall4Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted w
47、ithout license from IHS-,-,-ASME A90.1-2009Fig. 3 Guardrail or Screened Enclosure24 in. (610 mm) min.24 in. (610 mm) min.24 in. (610 mm) min.If 24 in. (610 mm) or more, guardrail is 42 in. (1 065 mm) min.If less than 24 in. (610 mm), guardrail is 66 in. (1 675 mm) min.Self-closinggate5Copyright ASME
48、 International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-(09)ASME A90.1-2009Fig. 4 Example of Maze Entrance to Manlift24 in. (610 mm) min.24 in. (610 mm) min.24 in. (610 mm) min.Guardrailsnear edge ofopening toapproxima
49、te of floor openingFlooropeningStandardguardrailsEmergencyladder24 in. (610 mm) min.24 in. (610 mm) min.24 in. (610 mm) min.CLGENERAL NOTE: Entry shown on two sides; entry on one side is adequate.6Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or n
