圈上海夫通大华 e寸B口 LECTURE 10 ME371/ME337 DESIGN AND MANUFACTURING Belt Drives Covered: Ch17 in Mechanical Engineering Design SHAN 圈上泽夫通大学 Lectures Power/Energy Conversion (Electrical Motors) Power/Energy Transmission (Gears,Cam,Linkage, Belt Drives, Power Screws Transmission Joints (Fasteners, Support Connectors) (Bearings) Structural Support (Frames) Tools Statics,Dynamics, Stress Analysis,etc. 1
1 Belt Drives LECTURE 10 ME371/ME337 DESIGN AND MANUFACTURING Covered: Ch17 in Mechanical Engineering Design Lectures Power/Energy Conversion (Electrical Motors) Transmission Support (Bearings) Joints (Fasteners, Connectors) Structural Support (Frames) Tools Statics, Dynamics, Stress Analysis, etc. Power/Energy Transmission (Gears, Cam, Linkage, Belt Drives, Power Screws)
国上海支大华 Outline Belt drive system introduction Belt drive system analysis Belt drive system design 圆上清支大华 Applications 2
2 Outline Belt drive system introduction Belt drive system analysis Belt drive system design Applications
Timing-Belt Drive 桑塔纳轿车(2000)发动机 V-Belt Drive 手扶拖拉机驱动装置 3
3 Timing-Belt Drive V-Belt Drive
Poly-rib Belt 北京”切诺基”吉普车发动机 Flat Belt Drive 大理石切害割机(125kW) 4
4 Poly-rib Belt Flat Belt Drive
圈上海文通大华 Basic Belt Drives A belt drive is a flexible power transmission element that seats tightly on a set of pulleys(带轮sheave) ▣ When used for speed reduction,the smaller sheave is mounted on the high-speed shaft,e.g.shaft of an electric motor.Larger sheave is mounted on driven machine. Belt is installed by placing it around the two sheaves while center distance between them is reduced.Then the sheaves are moved apart placing the belt in high initial tension(初拉力). © 上海充廷大学 Belt Type 口 Four principal types of belts:Crowned pulleys are used for flat belts,and grooved pulleys,or sheaves,for round and V belts.Timing belts require toothed wheels,or sprockets. Belt Type Figure Joint Size Range Center Distance Yes 0.031o0.20im No upper limit I= 10.75to5mm Round 0立 Yes d=文o是in No upper limit ☑ None b=/0.31tor 18to19 Timing y None p =2 mm and 5
5 Basic Belt Drives A belt drive is a flexible power transmission element that seats tightly on a set of pulleys（带轮 sheave） When used for speed reduction, the smaller sheave is mounted on the high-speed shaft , e.g. shaft of an electric motor . Larger sheave is mounted on driven machine. Belt is installed by placing it around the two sheaves while center distance between them is reduced. Then the sheaves are moved apart placing the belt in high initial tension（初拉力）. Four principal types of belts: Crowned pulleys are used for flat belts, and grooved pulleys, or sheaves, for round and V belts. Timing belts require toothed wheels, or sprockets. Belt Type