. Determine: the diameter of shaft
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- The reducer input shaft shown in the figure is tapered It transmits moment with the help of a gear wheel. On the spindle, Fa = 552 N, Fr = 457 N, Ft = 1960 N from gear forces and belt mechanism incoming Fk = 2600 N radial force impact . The shaft rotates with n = 1090 rpm. Accept the shaft diameter in the A bearing as dA = 35 mm. Fixed ball suitable for Lh = 13500 h select bearing.The reducer input shaft shown in the figure is taperedIt transmits moment with the help of a gear wheel.On the spindle, Fa = 552 N, Fr = 457 N, Ft = 1960 Nfrom gear forces and belt mechanismincoming Fk = 2600 N radial force impact. The shaft rotates with n = 1090 rpm.Accept the shaft diameter in the A bearing as dA = 35 mm.Fixed ball bearing for Lh = 13500 hselect2. A shaft is supported on bearings A and B, 800 mm between centres. A 20 degrees straight tooth spur gear having 600 mm pitch diameter, is located 200 mm to the right of the left hand bearing A, and a 700 mm diameter pulley is mounted 250 mm towards the left of bearing B. The gear is driven by a pinion with a downward tangential force while the pulley drives a horizontal belt having 180 degrees angle of wrap. The pulley also serves as a flywheel and weighs 2000 N. The maximum belt tension is 3000 N and the tension ratio is 3: 1. Determine the maximum bending moment and the necessary shaft diameter if the allowable shear stress of the material is 40 MPa.
- A steel shaft 800 mm long transmitting 15 kW at 400 r.p.m. is supported at two bearings at the twoends. A gear wheel having 80 teeth and 500 mm pitch circle diameter is mounted at 200 mm from theleft hand side bearing and receives power from a pinion meshing with it. The axis of pinion and gearlie in the horizontal plane. A pulley of 300 mm diameter is mounted at 200 mm from right hand sidebearing and is used for transmitting power by a belt. The belt drive is inclined at 30° to the vertical inthe forward direction. The belt lap angle is 180 degrees. The coefficient of friction between belt andpulley is 0.3. Design and sketch the arrangement of the shaft assuming the values of safe stresses as :τ = 55 MPa; σt= 80 MPa. Take torsion and bending factor 1.5 and 2 respectively.n Mukwano Industries, a shaft assembly shown in Fig. 2 is driven by a flat belt at location A and drives a flat belt at location B. The drive belt pulley diameter is 300 mm; the driven belt pulley diameter is 500 mm. The distance between sheaves is 800 mm, and the distance from each sheave to the nearest bearing is 200 mm. The belts are horizontal and load the shaft in opposite directions. Determine the size of the shaft using Distortion Energy Theory (DET) and the types of steel that should be used. Use a safety factor of 10. Also, provide a free-body diagram as well as moment and torque diagramsThe client requires a single step-up spur gearbox to transmit a 10 kW power from a shaft rotatingat 1000 rpm, while the output speed must be 1700 rpm. The material for gear and pinion is 817M40and 655M13, respectively State the design specification considering the following design factors:1. Functionality2. Stress
- An input shaft connected to the motor rotates at 1200 rpm, while the output speed must be 570 rpm. The contact force between the gears is transmitted through the pressure angle of 20°. The radial force is 321,90 kN. The material for both gear and pinion is 817M40.An engine of a motor vehicle with a wheel diameter of 712 mm develops 50 kW at 2,000 rpm combined efficiencyof the differential and transmission is 75% with an over-all speed reduction to. 1 determine he torque to bedelivered by the clutch N-m.An input shaft of a gearbox with motor power P = 7 kW and rotation number n = 1300 rpm. The diameter of an input shaft is d = 20 mm and its material is 16MnCr5. A force of F = 2800 N forces the shaft due to the operation of a gear wheel connected with a wedge on the input shaft. The distances of the gear from the bearings are given as L₁ = 40 mm and L2 = 60 mm. In the most dangerous section, you are required to check the strength according to the S = 3 safety factor. If the section is unsafe in terms of strength, what changes would you make in the design to make it safe? (The surface of the spindle is machined as fine chips, reliability poor Kg = 1.).
- A 15 kW and 1200 motor drives a compressor at 300 a pair of spur gears having . The center-to-center distance between the shafts is 400 . The motor pinion is made of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel having allowable static stress as 140 MPa . Assuming that the drive operates 8 to 10 hours per day under light conditions , find from the standpoint of strength Module , 2. Fare and 3. Number of teeth and pitch circle diameter of each gear 2. Check the gears thus designed from the consideration of Static tooth load or endurance strength of the tooth flexural endurance limil (sigma_{\epsilon}) may be taken as 400 MPa 3. Check the gears thus designed from the consideration of wear surface endurance limit ( sigma epsilon x ) may be taken 700 MPa b ^ pi ( 6.154 - 0512/pi; F_{N}3.A chain drive using bush roller chain transmits 5.6 kW of power. The driving shaft on an electric motor runs at 1440 r.p.m. and velocity ratio is 5. The centre distance of the drive is restricted to 550 ± 2% mm and allowable pressure on the pivot joint is not to exceed 10 N/mm2. The drive is required to operate continuously with periodic lubrication and driven machine is such that load can be regarded as fairly constant with jerk and impact. Design the chain drive by calculating leading dimensions, number of teeth on the sprocket and specify the breaking strength of the chain. Assume a factor ofA certain farm equipment which requires 2200 N-m torque at 708 rpm has a diesel engine that operates at 1601 rpm as its prime mover. A No. 60 roller chain with a total length of 60 pitches and a small sprocket with 23 teeth are to be used with an operating temperature to remain constant at 45 degree C. Determine (a) the no. of teeth of the larger sprocket, (b) the pitch diameter of the smaller sprocket in mm, and (c) the pitch diameter of the larger sprocket in mm. Express your answer in 3 decimal places.