Does anyone know what a "belt tightener" is?
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 is designed according to the speed of the machine
The belt wheel belongs to the plate hub, the general relative size is large, and the manufacturing process is mainly cast and forging. 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, can be designed to be forged, the material is steel. Pulley and material selection of the indicators is able to meet the use requirements as far as possible on the premise of reduce the cost of raw material, the craft is feasible, the principle of choosing the lowest! Pulley is mainly used for long-distance transmission power occasions, such as the output of small diesel engine power, agricultural vehicles, tractors, cars, mining machinery, mechanical processing equipment, textile machinery, packaging machinery, lathe, forging a bed, a small horsepower motorcycle power transmission, agricultural mechanical power transmission, air compressor, speed reducer, reducer, generators, cotton gin, and so on.
Standard regulations of the state of v-belt type O, A, B, C, D, E, F seven kinds of models, there are three kinds of corresponding pulley wheel groove Angle 34 °, 36 °, 38 °, at the same time, rules for each triangle model corresponding to each small minimum diameter of pulley groove Angle, large pulley provisions have been made. The grooves of the pulley are divided into 32 degrees 34 degrees 36 degrees 38 degrees, depending on the grooves and the base diameter of the belt wheel. The pulley groove Angle related to the diameter of the pulley, different models of belt pulley groove Angle under different diameter range recommended number of pulley groove Angle is as follows: O pulley on the pulley in 50 mm to 71 mm diameter range is 34 degrees; At 71mm ~ 90mm, it is 36 degrees, > 90mm is 38 degrees. A type A pulley is 36 degrees for the wheel diameter of 71mm to 100mm, and for 100mm ~ 125mm. > 125 mm is 38 degrees; The type B pulley is 34 degrees in diameter from 125mm to 160mm. 160mm ~ 200mm is 36 degrees, > 200mm is 38 degrees; The c-type pulley is 34 degrees in diameter between 200mm ~ 250mm, 36degree for 250mm ~ 315mm, and 38 degrees for > 315mm. The d-type pulley is 36 degrees in diameter from 355mm to 450mm, and 38 degrees for > 450mm. The E type 500mm ~ 630mm is 36 degrees, > 630mm is 38 degrees.
The belt is matched with the timing belt, and when the car is changing the timing belt, it's going to be a new one, and my treasure is like this, about 700
A part that prevents the belt loose from being crushed by a spring compactor and a pulley.
