ASME_BTH-1-2005.pdf

ASME BTH-1-2005Design ofBelow-the-HookLifting DevicesAN AMERICAN NATIONAL STANDARDSThe American Society ofMechanical EngineersNot for ResaleASME BTH-1-2005Design ofBelow-the-HookLifting DevicesAN AMERICAN NATIONAL STANDARD拉。The American Society ofMechanical EngineersThree Park Avenue.New York,NY 10016。whAgNo roproduction or natworking permitled without liconso from IHSNot for ResaloCONTENTSForewordCommittee Roster.yCorrespondence With the BTH Committeet月tge，。t。t。t，书年。t。，。t。t。书月。年e年。t。t。t。eg。年。，。+viiChapter 1Scope and Definitions.11-1Purpose11-2Sc0p11-3New and Existing Devices11-4General Requirements.11-5Definitions31-6Symbols.51-7References8Chapter 2Lifter Classifications.112-1General112-2Design Category112-3Service Class12Chapter 3Structural Design.133-1General.133-2Member Design153-3Connection Design3-4Fatigue Design283-5Other Design Considerations29Chapter 4Mechanical Design404-1General.404-2Sheaves404-3Wire Rope414-4Drive Systems424-5Gearing434-6Bearings4-7Shafting44-8Fasteners47Chapter 5Electrical Components485-1General485-2Electric Motors and Brakes.45-3Limit Switches,Sensors,and Push Buttons5-4Controllers and Rectifiers for Lifting Device Motors.495-5Grounding5-6Power Disconnects55-7Batteries.51FiguresC3-1Selected Examples of Table 3-1 Requirements.C3-2Block Shear2C3-3Pin-Connected Plate Notation.C3-4Stiffened Plate Lifting Beam.24-1Sheave Dimensions4-2Sheave Gap￥进No roproduction or notworking permitled without liconso from IHSNot for ResaleTables2-1Service Class,4C2-1Service Class Life.C3-1Design Category A Static Load Spectrum.14C3-2Design Category A Dynamic Load Spectrum.C3-3Design Category B Static Load Spectrum.14C3-4Design Category B Dynamic Load Spectrum.143-1Limiting Width-Thickness Ratios for Compression Elements.163-2Minimum Effective Throat Thickness of Partial-Penetration Groove Welds.3-3Minimum Sizes of Fillet Welds.273-4Allowable Stress Ranges,ksi(MPa).23-5Fatigue Design Parameters.304-1Strength Factors for Calculating Load Capacity(American Standard ToothF0rms）434-2Lgg Life.4-3aKey Size Versus Shaft Diameter(ASME B17.1).4-3bKey Size Versus Shaft Diameter(DIN 6885-1).454-4Fatigue Stress Amplification Factors.4No roproduction or notworking permitled without liconso from IHSNot for Resalo