The motor is connected to the pulley, and how to fix it?
Work speed/motor speed driving wheel diameter/driven wheel diameter * 0.98 = (sliding coefficient), such as using steel belt pulley for materials, for linear velocity is not higher than 40 m/s, such as the use of cast iron material, require linear velocity is not higher than 35 m/s, motor speed and pulley diameter conversion ratio, speed ratio = output rotational speed, input speed = load pulley pitch diameter, pitch circle diameter of the motor pulley. Pitch diameter and benchmark is the same diameter, diameter - 2 h = pitch diameter, h is on the line groove depth, different models of V belt h is not the same, A B C D E, Y, Z line groove depth respectively in 2 h = 1.6 1.6 3.5 4.8 8.1 2.75. Pulley pitch diameter is pulley diameter section line theory, a bit like gear pitch circle diameter. Generally expressed in PD, cylindrical generally expressed in OD. Different type slot pitch circle and cylindrical conversion formula is different, generally we tend to measure to the pulley cylindrical, in according to the formula to calculate the pitch circle. SPZ: OD = PD + 4; SPA: OD = PD + 5.5; .spb: OD = PD + 7; SPC: OD = PD + 9.6. The minimum diameter of A or SPA is 80mm, if it is less than that, especially at high speed, the belt is prone to cracks and cracks in the bottom. The SPZ band, the small wheel is not less than 63mm. Also pay attention to the belt mounting technique and the tension, too small and easy to slip, too big to damage the belt and bearing.
The advantages of pulley drive are: the belt wheel drive can mitigate the load impact. The belt wheel drive is smooth, low noise and low vibration. The structure of the pulley drive is simple and easy to adjust. The belt wheel's manufacturing and installation accuracy is not as strict as meshing drive; The belt wheel drive has the function of overload protection; The two shafts of the pulley drive are larger in range. The disadvantages of belt drive are: the belt wheel drive is flexible and smooth, the transmission is less efficient and cannot maintain accurate transmission ratio. When the belt wheel drives the same large circle force, the size of the outline and the pressure on the shaft are greater than the meshing drive. The belt has a shorter life span. The diameter of the belt wheel of various kinds of mechanical equipment is based on the speed of deceleration and the speed of the machine
The motor is directly connected to the pulley, which is fixed as follows: Through key connection the pulley fixed on the shaft, install the pulley diameter of axle end design steps, the other end of the hole on the shaft end, screwed, drive shaft with bearings as centering on the rack. Leather belt wheel, belongs to the plate of the plate, the general relative size is larger, the manufacturing process is usually cast, the forging is given priority to. In general, the design of a large size is made of cast iron, and the materials are usually cast iron (the casting performance is better), and the casting steel is seldom used. The general size is small,?
The ring is tightened and the head of the shaft is covered. The Schlick projectile is made of this structure.
