1、Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-The American Society of Mechanical Engineers PERFORMANCE STANDARD FOR ELECTRIC CHAIN HOISTS ASME HST-1-1999 Revision of ASME HSF1 M-1989 (RlN!i) Copy
2、right ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance: November 8, 1999 This Standard will be revised when the Society approves the issuance of a new edition. There will be no addenda or wri
3、tten interpretations of the requirements of this Standard issued to this edition. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards C
4、ommittee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input f
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8、e interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written
9、 permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright Q 1999 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. Copyright ASME International Provided by IHS under license with ASMENot for Res
10、aleNo reproduction or networking permitted without license from IHS-,-,-This Standard is one in a series that provide performance requirements for hoists and was originally issued in 1982. It was developed by the ASME Standards Committee HST, Hoists - Overhead. It is intended to serve as a guide to
11、manufacturers of the equipment, and to the purchasers and users of the equipment. Standards in this series are: HST-2 Hand Chain Manually Operated Chain Hoists HST-3 Manually Lever Operated Chain Hoists HST-4 Electric Wire Rope Hoists HST-5 Air Chain Hoists HST-6 Air Wire Rope Hoists This revision a
12、dds a new appendix that, in conjunction with ASME HST-1-1999, is intended to replace MIL-H-15317 now used to procure electric chain hoists by the Department of Defense. Suggestions for improvement of this Standard are welcome. They should be sent to The American Society of Mechanical Engineers; Attn
13、: Secretary, HST Committee, Three Park Avenue, New York, NY 10016-5990. This Standard was approved as an American National Standard on July 12, 1999. I 111 Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from I
14、HS-,-,-ASME STANDARDS COMMITTEE HST Hoists - Overhead (The following is the roster of the Committee at the time of approval of this Standard.) OFFICERS A. R. loth, Chair C. J. Gomez, Secretary COMMITTEE PERSONNEL C. J. Gomez, The American Society of Mechanical Engineers D. A. Merkel, Square D Co. E.
15、 R. Naylor, Campbell Chain R. R. Reisinger, FKI Industries, Inc. A. R. Toth, Harnischfeger Industries, Inc. F. W. Weidner, Naval Sea Systems Command V Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-
16、,-CONTENTS Foreword Committee Roster 1 General . 1.1 Scope . 1.2 The Appendices 1.3 Reference Standards 1.4 Definitions . 2 Performance . 2.1 General 2.2 Hoist Duty Service Classification 2.3 Duty Classification . 2.4 Application Analysis 2.5 Specification of Lift, Headroom. and Reach 2.6 Hoist and
17、Trolley Speeds . 2.7 Types of Trolleys 3 Mechanical 3.1 Design Stresses . 3.2 Load Sprockets (Pocket Wheels) 3.3 Load Chain 3.4 Hooks . 3.5 Load Blocks . 3.6 Hoist Brakes . 3.7 Hand Chain (Hand Chain Operated Trolleys Only) . 3.8 Overtravel Protection . 3.9 Overload Limiting Device 3.10 Trolley Whee
18、ls . 3.1 1 Brakes for Motor Driven Trolleys . 4 Electrical . 4.1 General 4.2 Motors 4.3 Controllers . 4.4 Control Enclosures . 4.5 Resistors . 4.6 Current Conductor Systems . 5 Testing. Marking. Manuals. Installation. Maintenance. and Operating Procedures 5.1 Testing of Hoists . 5.2 Marking . . 111
19、V 7 7 8 8 8 9 9 9 9 9 9 9 9 9 9 10 10 10 10 11 11 11 vii Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5.3 Manual 11 5.4 Installation . 11 5.5 Maintenance and Operating Procedures (Users Responsi
20、bility) i2 6 Typical Hoist and Trolley Inquiry Data . 12 Figures 1 Headroom. Lift. and Reach . 3 2 Reeving . 3 Tables I Duty Classifications 7 2 Typical Hoist and Motorized Trolley Speeds 8 3 Standard Rated Motor Voltages 10 Nonmandatory Appendices A Performance Requirements for Electric Chain Hoist
21、s Used in Marine and Other Applications as Required by the U.S. Department of Defense (DOD) . 15 B Typical Examples of Hoist Class Selection 25 . VI11 Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-
22、,-ASME HST-1-1999 PERFORMANCE STANDARD FOR ELECTRIC CHAIN HOISTS 1 GENERAL 1.1 Scope (a) This Standard establishes performance require- ments for electric chain hoists for vertical lifting service involving material handling of freely suspended (un- guided) loads using load chain of the roller or we
23、lded link types with one of the following types of suspension: (1) lug; (2) hook or clevis; (3) trolley. (b) This Standard is applicable to hoists manufactured after the date on which this Standard is issued. It is not applicable to: (I) damaged or malfunctioning hoists; (2) hoists that have been mi
24、sused or abused; (3) hoists that have been altered without authoriza- (4) hoists used for lifting or supporting people; (5) hoists used for the purpose of drawing both the load and the hoist up or down the hoists own load chain(s); and (6) hoists used for marine and other applications as required by
25、 the Department of Defense (DOD). tion of the manufacturer or a qualified person; 1.2 The Appendices Nonmandatory Appendix A, Performance Require- ments for Hoists Used in Marine Applications and Other Applications as Required by the Department of Defense (DOD), applies to the performance require- m
26、ents for hoists used in marine and other applications. The requirements stated in Appendix A are in addition to the requirements of ASME HST-1-1999 and must be separately invoked. Nonmandatory Appendix B, Typical Examples of Hoist Class Selection, includes examples of hoist appli- cations as an aid
27、to users in making the selection of the proper hoist for the application. 1.3 Reference Standards The following documents form a part of this Standard to the extent specified herein. The latest issue shall apply. ANSI 2535.4, Product Safety Signs and Labels NEMA 250, Enclosures for Electrical Equipm
28、ent (1,000 Volts Maximum) Publisher: National Electrical Manufacturers Association (NEMA), 1300 North 17th Street, Rosslyn, VA 22209 ANSVNFPA 70, National Electrical Code Publisher: National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02269 ASME B29.1, Precision Power Transmi
29、ssion Roller Chains, Attachments, and Sprokets ASME B30.2, Overhead and Gantry Cranes (Top Run- ning Bridge, Single or Multiple Girder, Top Running Trolley Hoist) ASME B30.7, Base Mounted Hoists ASME B30.9, Slings ASME B30.10, Hooks ASME B30.11, Monorails and Underhung Cranes ASME B30.16, Overhead H
30、oists (Underhung) ASME B30.17, Overhead and Gantry Cranes (Top Running, Bridge, Single Girder, and Underhung Hoist) Publisher: The American Society of Mechanical Engi- neers (ASME International), Three Park Avenue, New York, NY 10016; ASME Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 0700
31、7-2300 1.4 Definitions abnormal operating conditions: environmental condi- tions that are unfavorable, harmful, or detrimental to the operation of a hoist, such as excessively high or low temperature, exposure to weather, corrosive fumes, dust laden or moisture laden atmospheres, and hazardous locat
32、ions. ambient temperature: the temperature of the atmo- sphere surrounding the hoist. 1 Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME HST-1-1999 beam: an overhead standard structural or spec
33、ially fabricated shape, on which the trolley operates. brake: a device, other than a motor, used for retarding or stopping the hoist or trolley motion by friction or power means. brake, holding: a friction brake for a hoist that is automatically applied and prevents motion when power is off. brake,
34、mechanical load: an automatic type of brake used for controlling loads in a lowering direction. This unidirectional device requires torque from the motor to lower a load but does not impose additional load on the motor when lifting a load. contactor: an electromechanical device for opening and closi
35、ng an electric power circuit. control actuator: a manual means at the operating station by which hoist controls are energized. control enclosure: the housing containing the electrical control components. controlled braking means: a method of controlling speed by removing energy from the moving body,
36、 or by imparting energy in the opposite direction. dynamic: a method of controlling speed by using the motor as a generator, with the energy being dissipated by resistance. rnechunicul: a method of controlling or reducing speed by friction. regenerative: a method of controlling speed in which the el
37、ectrical energy generated by the motor is fed back into the power system. cushioned start: an electrical or mechanical method for reducing the rate of acceleration of trolley motion. hand chain: the chain provided to control movement of a hand-chain operated trolley. hazardous (classified) locations
38、: locations where fire or explosion hazards may exist. Locations are classified depending on the properties of the flammable vapors, liquids or gases, or combustible dusts or fibers that may be present, and the likelihood that a flammable or combustible concentration or quantity is present. Refer to
39、 ANSVNFPA 70. class 1 locations: locations in which flammable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures. class 2 locations: locations that are hazardous be- cause of the presence of combustible dust. PERFORMANCE STANDARD FOR
40、ELECTRIC CHAIN HOISTS class 3 locations: locations that are hazardous be- cause of the presence of easily ignitable fibers or flyings, but in which such fibers or flyings are not likely to be in suspension in the air in quantities sufficient to produce ignitable mixtures. headroom: headroom is measu
41、red with the load hook at its upper limit of travel and is the distance from the saddle of the load hook to the following locations (see Fig. 1): (a) saddle of the top hook on hook suspended hoists; (b) center line of the suspension holes on lug sus- (c) bottom of the beam on trolley suspended hoist
42、s. hoist: a suspended machinery unit that is used for lifting or lowering a freely suspended (unguided) load. hoist speed: the rate of motion that the load hook obtains while lifting rated load. hook suspended: suspension of hoist from a trolley or rigid structure by means of a hook at top of hoist.
43、 idler sprocket: a freely rotating device that changes the direction of the load chain. This device is sometimes called idler wheel, idler sheave, pocket wheel, or chain wheel (see Fig. 2). lift: the maximum vertical distance through which the load hook can travel, and is the total hook movement bet
44、ween its upper limit of travel and its lower limit of travel (see Fig. 1). lifiing devices: devices that are not normally reeved onto the hoist chains such as hook-on buckets, magnets, grabs, and other supplemental devices used for handling certain types of loads. The weight of these devices is to b
45、e considered part of the load to be lifted. lift limiting device: an electrical, mechanical, or elec- tromechanical device for limiting the upward or down- ward travel of the load hook at the extremities of lift. This device may limit lift at any point within the extremities of lift, if designed to
46、be adjustable. load: the total imposed weight on the load block or hook. load block: the assembly of hook or shackle, swivel, bearing, pins, sprocket, and frame suspended by the load chain. This shall include all appurtenances reeved in the load chain. load chain: the load suspension chain in the ho
47、ist. roller chain: a series of alternately assembled roller links and pin links in which pins articulate inside the pended hoists; Copyright ASME International Provided by IHS under license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PERFORMANCE STANDA
48、RD FOR ELECTRIC CHAIN HOISTS ASME HST-1-1999 Hook or Clevis Lug Trolley Trolley Suspended Suspended Suspended Suspended Slack chain FIG. 1 HEADROOM, LIFT, AND REACH Idler sprocket /- Load block I /- Load block 1 Part 2 Part - 3 Part FIG. 2 REEVING 3 Copyright ASME International Provided by IHS under
49、 license with ASMENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME HST-1-1999 PERFORMANCE STANDARD FOR ELECTRIC CHAIN HOISTS bushings and rollers are free to turn on the bushings. Pins and bushings are press-fit in their respective link plates. welded link chain: a chain consisting of a series of interwoven links formed and welded. N
