1、CAN/CSA-Z256-M87A National Standard of Canada(reaffirmed 2011)Safety code for material hoistsThe Canadian Standards Assoclatlon (CSA), under whose auspices this National Standard has been pro- duced, was chartered in 7 97 9 and accredited by the Standards Council of Canada to the National Standards
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15、et Suite 7200 Ottawa, Ontario K7 P 6N7 les normes nationales du Canada sont publiges en versions frunqaise et anglaise. General Instruction No. 1CAN/CSA-Z256-M87January 1987Title: Safety code for material hoistsPagination: 38 pages, each dated January 1987To register for e-mail notification about an
16、y updates to this publicationgo to www.shop.CSA.caclick on E-mail Services under MY ACCOUNTclick on CSA Standards Update ServiceThe List ID that you will need to register for updates to this publication is 2000498.If you require assistance, please e-mail techsupportcsa.ca or call 416-747-2233.Visit
17、CSAs policy on privacy at www.csagroup.org/legal to find out how we protect your personal information.Blank pageNational Standard of Canada CAN/CSA-Z256-M8 7 Safety Code for Material Hoists Prepared by Canadian Standards Association Approved by Standards Council of Canada ISSN 031 7-5669 Published i
18、n January 1987 by Canadian Standards Association, 178 Rexdale Boulevard, Rexdale (Toronto), Ontario, Canada M9W 1R3. Copyright Canadian Standards Association-1 987 All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without
19、the prior permission of the publisher. Blank pageContents Contents Technical Committee on Construction Hoists 5 Preface 8 1. Scope 9 2. Reference Publications 9 3. Definitions 9 4. General Requirements 13 4.1 Structural Members and Fasteners 73 4.1.1 Material and Design 13 4.1.2 Design Loads and Str
20、esses 73 4.2 Welding 74 4.2.1 Design 14 4.2.2 Qualification 14 4.3 Electrical Wiring and Devices 74 4.4 Location of Disposal Chutes and Containers 75 4.5 Use of Material Hoists 75 5. Mast, Foundation, and Guying 75 6. Hoistway Enclosure and Protection Around Hoist 16 7. Hoistway Landings and Doors 7
21、6 7.1 Landing Openings 76 7.2 Platforms 17 7.3 Platforms 77 7.4 Hoistway Doors 77 7.5 Hoistway Door locking Devices 77 Guarding on Landings and Landing Lighting on Landings and Landing 8. Cars 77 8.1 Platforms 77 8.2 Structural Members 77 8.3 Car Enclosures 77 8.4 Car Doors 78 8.5 Rated Load and Cap
22、acity 78 9. Hoist Capacity and Data Plates 18 10. Notice Plate 18 11. Counterweights 78 11.1 Guide Rails 18 11.2 Car Rail Supports 19 Guide Rails and Supports for Cars and 11.3 Counterweight Rail Supports 79 12. Counterweights 79 12.1 Weight 19 12.1 .I Traction Machines 19 12.1.2 Winding Drum Machin
23、es 79 12.2 Guiding of Counterweights 79 12.3 Design of Counterweights 19 12.4 Location and Guarding of Counterweights 19 12.5 13. 14. 14.1 14.2 15. 15.1 15.2 15.3 15.4 15.5 15.6 15.7 16. 17. 18. 19. 19.1 19.2 Dual Rack and Pinion Hoists 79 Buffers 19 Clearances 19 Top and Bottom Clearances 79 Horizo
24、ntal Clearances 20 Operation 20 Operating Devices 20 Operating and Control Circuits 20 Inspection Operation 27 Phase Reversal and Failure Protection 21 Car Position Indicators 27 Radio Control 21 Operation and Operating Devices 20 Electrical Protective Devices (Switches) 21 Corn pensat ing -27 Rope-
25、Sheave Switch Slack-Rope Device 27 Terminal Stopping Devices 22 General Requirements 22 Normal Terminal Stopping and Slowdown Devices 22 19.2.1 Function 22 19.2.2 Location and Actuation of Switches 22 19.2.3 Type of Stopping Switches Prohibited 22 19.3 Final Terminal Stopping Devices 22 19.3.1 Funct
26、ion 22 19.3.2 Location and Actuation of Switches 23 19.3.3 Additional Requirements for Drum Machines 23 19.3.4 Additional Requirements for Rack and Pinion Machines 23 19.4 Emergency Terminal Speed-Limiting Devices 23 Safety Code for Material Hoists January 1987 3 Contents 20. Safeties and Governors
27、23 20.1 Car Safeties 23 20.1.1 Location 23 20.1 -2 Stopping Distances 24 20.1.3 Safety Switch 24 20.1.4 Application of Safeties 24 20.1.5 Type A Safeties 24 20.1.6 Type B Safeties 24 20.1.7 Type C Safeties 25 20.1.8 Type D Safeties 25 20.1.9 Broken-Rope Safeties 25 20.2 Counterweight Safeties 25 20.
28、3 Governors 25 21. Drive Machines, Sheaves, and Drums 25 21.1 Drive Machines 25 21.2 Sheaves and Drums 26 21.3 Safety Factor for Drive Machines, Sheaves, and Drums 27 21.4 Bolts and Set Screws Transmitting Torque 28 21.5 Shaft Fillets and Keys 28 21.6 Cast Iron Worms and Worm Gears 28 21.7 Friction
29、Gearing and Clutches 28 21.8 Drive Machine Brakes 28 21.8.1 Positive Drive Machine Brakes 28 21 -8.2 Non-Positive Drive Machine Brakes 28 21.9 Hydraulic Drives 28 21.9.1 Valves, Piping, and Fittings 28 21.9.2 Pipe Supports 28 21.9.3 Flexible Connections 28 21.9.4 Pump Relief 28 21.9.5 Interlock 29 2
30、1.9.6 Brake 29 21.9.7 Guarding 29 21.9.8 Pressure Gauge Fitting 29 22. Hoisting and Counterweight Wire Ropes and Rope Connections 29 22.1 General 29 22.2 Minimum Number of Ropes 29 22.3 Minimum Diameter of Ropes 29 22.4 Safety Factor 29 22.5 Wire Rope Data 33 22.6 Wire Rope Fasteners 33 23. Machiner
31、y Spaces and Overhead Beams 33 23.1 Overhead Beams and Brackets 33 23.2 Access to Overhead Machinery 33 23.3 Equipment 33 23.4 Lighting of Machinery Spaces 33 23.5 Clearances of Machinery Spaces 33 Protection of Machinery and Control 24. Mast (Chicago) Boom 33 25. Communication 34 25.1 Types of Comm
32、unication Systems 34 25.2 Signal Systems 34 25.2.1 General 34 25.2.2 Hand Signals 34 25.2.3 Audible Signals 34 25.2.4 Electrical Signals 34 26. Acceptance Inspections and Tests for New Installations and Alterations 35 26.1 General 35 26.2 Drive Machine Brakes 35 26.3 Car and Counterweight Buffers 35
33、 26.4 Safeties and Governors 35 26.5 Ground Fault Circuit Interrupter 35 26.6 Inspection for Grounding 36 26.7 Wire Rope Inspection 36 26.8 Rack and Pinion Inspection 36 Appendix A-Erection, Operation, and Maintenance of Material Hoists 37 4 CAN/CSA-Z256-M8 7 January 1987 Technical Committee Technic
34、al Committee on Safety Code for Construction Hoists K.D. Vinge Alberta Labour, Ca I g ary Ch aim an R.G. Acton Canadian Patent Scaffolding Co., Ltd., Toronto, Ontario D.C. Balmer Associate Belco Elevator and Lift Inc., Bram pton, Ontario J.W. Baxter Oakville, Ontario Re pr es en tin g In t e r n a t
35、io n a I Union of Elevator Construcfors J.W. Berquist Alberta Workers Health, Safety and Compensation, Calgary Newfoundland Department of Labour and Manpower, St. Johns E.C. Blackwood Alternafe J. Bolla Metro Hoisting and Erecting Limited, Concord, 0 ntario Associate Linden-Alimak AB, Skelleftea, Sw
36、eden U. Bostroem M. Burrell Bu rrel I Engineering Limited, Weston, Ontario New Brunswick Department of Labour and Human Resources, Fredericton A.D. Cameron J. G. Christianson PCL Construction Resources Inc., Edmonton, AI berta International Union of Operating Engineers, Edmonton, Alberta N.B. Coutts
37、 F. Csaszar Urban Construction Equipment Limited, Concord, Ontario Manitoba Department of Labour, Winnipeg R.A. Dah1 A.W. Diamond Newfoundland Department of Labour and Manpower, St. Johns Canadian Standards Association, Rexdale, Ontario Associate R.E. Dowling Safety Code for Material Hoists January
38、1987 5 Tec hnica I Corn mi nee A.M. Gomes Workers Compensation Board of British Columbia, Richmond American Pecco Steel Corporation, Millwood, New York, USA P. Jehle B.R. Johnstone Associate Johnstone Fabricators Li m i ted, Vancouver, British Columbia Saskatchewan Department of Labour, Regina Briti
39、sh Columbia Ministry of Labour, Burnaby B. Jones S.J. Koinoff M. Liberatore Nova Scotia Department of Labour and Manpower, Hal if ax L. Mance Chervin Engineering Ltd., Downsview, Ontario D.J. Martin D. Wickharn (b) the terminal stopping devices requirements (Clause 19) have been rewritten mainly for
40、 purposes of clarification; (c) requirements have been added for hydraulic drive machines (Clause 21.9); (d) the sections dealing with erection, operation, and maintenance of the hoist have been relocated to an appendix where they are now recommendations instead of mandatory req uirernen ts. This St
41、andard was prepared by the CSA Committee on Construction Hoists under the jurisdiction of the Standards Steering Committee on Lifting, Hoisting and Related Devices and was formally approved by these Committees. January 1987 Note: Although the intended primary application of this Standard is stated i
42、n its Scope, it is important to note that it remains the responsibility of the user of the Standard to judge its suitability for his or her particular purpose. referred to the appropriafe committee. All enquiries regarding this Standard, including requests for interpretation, should be addressed fo
43、Canadian Standards Association, Standards Division, 7 78 Rexdale Boulevard, Rexdale (Toronto), Ontario M9W 1/33. (a) illustrative sketch; (6) (c) sample copy, write to CSA Marketing or telephone (476) 747-2292. The following are the major changes that have been made in this new edition: CSA Standard
44、s are subject to periodic review and suggestions for their improvement will be Requests for interpretation should define the problem, making reference to a specific Clause, and, where appropriate, include an provide an explanation of circumstances surrounding the actual field condition; and be phras
45、ed, where possible, to permit a specific “yes” or “no” answer. Interpretations are published in “CSA Information Update”. For subscription details and a free CAN/CSA-Z256-M8 7 January 1987 Scope-Reference Publications-Definitions Safety Code for Material Hoists 1. Scope 1.1 This Standard applies to
46、structures and hoists that are not a permanent part of buildings, structures, or other works and that are used during construction, alteration, or demolition to raise and lower materials connected with or related to a building project. 1.2 This Standard covers the design, construction, installation,
47、 operation, and acceptance inspection and testing of material hoists. 1.3 This Standard does not apply to (a) hoists for transporting personnel; (b) temporary elevators installed in their hoistways during the construction of buildings and incorpor- ating a part of the permanent elevatorto be install
48、ed later; (c) manlifts, counterbalanced or endless-belt type; (d) mine elevators; (e) cranes and derricks; (f) (9) or (h) struction hoists. window cleaners and swing stages; mobile fork lift trucks and similar equipment; rope-guided and non-guided personnel con- 2. Reference Publications 2.1 This St
49、andard refers to the following and the year dates shown indicate the latest issues available at time of printing: CSA Standards Canadian Electrical Code, Part I; Steel Structures for Buildings-Limit States Design; C22.1-1986, S16.1-1974, SI 6.1 S2-1981, Supplement No. 2 to S16.1-1974, Steel Structures for Buildings-Limit States Design; Steel Structures for Buildings (Limit States Design); Cold Formed Steel Structural Members; Commentary on S136-M84, Cold Formed Steel Structural Members; Certification of Companies for Fusion Welding of Stee I Stru ct u res; Welded Steel Construct
