EES的“回转轴承分析”手册

Slewing Bearing Analysis Stiffness Static rating Life rating For ball, cross roller and roller bearings www.EES-Gear.ch Recent projects 9 Analysis of a >5m slewing bearing for mining application, Korea 9 Re-calculation for certification, wind turbine pitch/yaw bearing, India/Italy 9 Analysis review and certification assistance, pitch/yaw bearing, India/Korea 9 Comparative analysis for wind turbine pitch and yaw bearings, Germany 9 Analysis methodology study for slewing rings, Spain 9 Various calculations for slewing ring gearboxes, Japan, Italy, India, Germany Your benefit 9 CAE software for bearing rating (basic, modified, reference and modified reference rating) taking into account lubrication, shaft misalignment, housing stiffness and internal bearing geometry 9 Strength and life calculation of large, flexible bearings considering adjacent structures and bolt pre-tensioning 9 Certification assistance e.g. for wind turbine bearing certification 9 Bearing rating using application load spectra, analysis for certification 9 Training on bearing rating theory and software Our approach We use KISSsoft software, calculations along DIN and ISO standards (implemented in Excel and MathCad) and FEM analysis (ABAQUS). Combining different calculation methods, we can handle simple and complex problems alike. FEM calculations are only used to determine rolling element loads and to account for the elasticity of adjacent structures. Non linear spring stiffness of rolling elements is taken into account. Stress calculations are then done more accurately using formulas based on Hertzian theory including modifications for edge stresses. These stresses are then the basis for a static or life rating. Our calculations are in line with 9 ISO76, ISO281 9 DIN ISO 281-4 / ISO TS 16281 9 ISO81400 9 NREL DG 03 9 Harris/Kotzalas, “Essential Concepts of Bearing Technology” and “Advanced Concepts of Bearing Technology” 2 of 6 Roller with logarithmic correction 24.85 24.87 24.89 24.91 24.93 24.95 24.97 24.99 25.01 25.03 25.05 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 No. of slice ns S lic e di am et er D ns True slice diameter with logarithmic correction True slice diameter, with logarithmic correction with max=TR Assumed slice diameter considering TR and CL Clearance and profile modifications For the roller load, any assembly clearance and any kind of roller profile modifications may be considered due to our combined spring-gap modelling approach using various initial gap opening Initial clearance or pre-tension may be considered as well Static rating Using load capacity numbers calculated along ISO76 and static equivalent load Using true contact stresses, calculated from FEM load distribution and Hertzian contact stress with stress correction function to account for edge stresses Using permissible values for different types of bearings, considering true hardness compared to reference hardness Considering ring and structure elasticity or assuming stiff support only Life rating Life rating along NREL DG 03 for Wind Turbine pitch and yaw bearings Using rolling element forces from FEM calculation or standard formulas Life rating along ISO281 for basic or reference life FEM analysis of slewing rings Calculation of rolling element load considering Rolling element stiffness, ring elasticity, adjacent Structure, pre-tension from bolting Calculation of tilting stiffness and axial, considering assembly clearance, rolling element and ring stiffness 3 of 6 Gearing and bolting analysis Gear rating can be done along ISO6336, DIN3990, AGMA2001 and AGMA6004 For fatigue rating, including load spectra, or static rating. Rating against pitting and root fracture Geometric analysis for clearance and assembly tolerances Calculation of pinion lead and profile corrections Bolt rating is done along VDI2230, considering Pretension, bolt tightening procedure and settling Calculations are done using KISSsoft software, ensuring that results are readily acceptable to customers and certification agencies Calculations are documented such that they are suitable for submission to certification societies like Germanische Lloyd, TüV, DEWI, KR, C-WET and others Slewing ring gearboxes Slewing ring gearboxes Wind turbine pitch and yaw gearboxes Supplier calculation review Analysis for certification Certification assistance Fatigue / static testing procedures definition Gearbox design including gear sizing, shaft dimensioning, bearing selection and manufacturing drawings FEM analysis of housings and planetary carriers 4 of 6 Staff Dipl. Ing. ETH H. Dinner, Director – FEM analyst, project manager with Helbling Technik AG, 4 years – Project engineer and head of sales, with KISSsoft AG, 5 years – Consultancy, 1.5 years Dipl. Ing. FH T. Uvermann, Director – Gearbox designer, 6 years – Bearing application engineer, 2 years – Head of heavy duty gearbox design, mining equipment company, 3 years Dip. Ing ETH R. Stebler, FEM analysis – FEM analyst and calculation project manager, 10 years with various companies – Consultancy, 5 years Dipl. Ing. FH A. Thuswaldner, Design – Gearbox designer and head of marine / turbo gear department with MAAG, 13 years – Head of technical sales with MAAG – Consultancy, 3 years Partners STech&H Pvt Ltd, Seoul, Korea – Dr. Young Il Kwon, Director – Engineering partner – KISSsoft software sales partner Kadkraft Systems Pvt Ltd, Chandigarh, India, www.kadkraft.com – Mr. Raman Gupta, Director – CAD services partner, KISSsoft software sales partner Estudio Pina, Bahia Blanca, Argentina, www.estudiopina.co.ar – Mr. Jose Luis Pina, Director – Engineering partner Unique Technologies Pty Ltd, Shanghai, China – Mr. Zhilin Ye, Director – KISSsoft software sales partner 5 of 6 Memberships EES Gear GmbH / EES KISSsoft GmbH is member of the following associations Partnership with KISSsoft AG EES Gear GmbH and it’s sister company EES KISSsoft GmbH maintain a close partnership with KISSsoft AG. EES KISSsoft GmbH is sales partner to KISSsoft AG, responsible for the Asian Market (India, Japan, Taiwan, China, Korea, Southeast Asia). Contact details EES Gear GmbH is a sister company to EES KISSsoft GmbH. Both companies are under the same management and located in Switzerland near Zurich. All business related to the sale of KISSsoft & KISSsys software in Asia is conducted through EES KISSsoft GmbH. Engineering services are offered through EES Gear GmbH. Contact EES Gear GmbH / EES KISSsoft GmbH through: Dipl. Ing. H. Dinner, Director / Dipl. Ing. T. Uvermann, Director EES Gear GmbH 0041 41 755 09 54 (Phone) Weid 10 0041 41 755 09 48 (Fax) P. O. Box 121 www.EES-KISSsoft.ch / www.EES-Gear.ch 6313 Menzingen h.dinner@EES-KISSsoft.ch Switzerland t.uvermann@EES-KISSsoft.ch 6 of 6 www.EES-Gear.ch Our approach Clearance and profile modifications Static rating Life rating FEM analysis of slewing rings Gearing and bolting analysis Slewing ring gearboxes Staff Partners Memberships Partnership with KISSsoft AG Contact details