Introduction to the classification of crane reducers
The small crane reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor (motor) to the required number of revolutions and obtain a larger torque. In the current mechanism used to transmit power and motion, the application range of the reducer is quite wide. It can be seen in almost all kinds of mechanical transmission systems, from ships, automobiles, locomotives, heavy machinery used in construction, processing machinery and automatic production equipment used in the machinery industry, to the common ones in daily life Home appliances, clocks, etc. Its applications range from the transmission of large power to small load and precise angle transmission. The application of the reducer can be seen. In industrial applications, the reducer has the function of reducing speed and increasing torque. Therefore, it is widely used in speed and torque conversion equipment. The main functions of the reducer are:
1) Decrease speed and increase output torque at the same time. The torque output ratio is the motor output multiplied by the reduction ratio, but be careful not to exceed the rated torque of the reducer.
2) Deceleration reduces the inertia of the load at the same time, and the reduction in inertia is the square of the reduction ratio. You can see that a general motor has an inertia value.
The working principle of the reducer
The reducer is generally used for low-speed and high-torque transmission equipment. The power of the electric motor, internal combustion engine or other high-speed running is achieved by the gear with a small number of teeth on the input shaft of the reducer and the large gear on the output shaft to achieve the purpose of deceleration. The reducer will also have several pairs of gears with the same principle to achieve the desired deceleration effect. The ratio of the number of teeth of the large and small gears is the transmission ratio.
Types of reducers
The reducer is a relatively precise machine. The purpose of using it is to reduce the speed and increase the torque. It has a wide variety of different models, and different types have different uses. There are many types of reducers. According to the transmission type, they can be divided into gear reducers, worm reducers and planetary gear reducers; according to the number of transmission stages, they can be divided into single-stage and multi-stage reducers; according to the gear shape, they can be divided into cylindrical gear reducers. The speed reducer, the bevel gear reducer and the bevel-cylindrical gear reducer; according to the arrangement of the transmission, it can be divided into the expansion type, the split type and the coaxial type reducer. The following are commonly used reducer classifications:
The main feature of the worm gear reducer is that it has a reverse self-locking function and can have a larger reduction ratio. The input shaft and the output shaft are not on the same axis or on the same plane. But generally the volume is large, the transmission efficiency is not high, and the accuracy is not high. The harmonic drive of the harmonic reducer uses the controllable elastic deformation of the flexible element to transmit movement and power. The volume is small and the accuracy is high. However, the disadvantage is that the flexible wheel has a limited life and is not resistant to impact. The rigidity is compared with metal parts. Difference. The input speed cannot be too high. The advantages of planetary reducer are compact structure, small return clearance, high precision, long service life, and large rated output torque. But the price is slightly more expensive.
