The main noises of wire rope electric hoists are gear noise, motor noise, and bearing noise. Various experiments have shown that motor noise is lower than gear noise, and bearing noise is also lower than gear noise. Therefore, the main noise source of wire rope hoists is gear noise.
The main factors that affect the noise of wire rope electric hoists are:
After the gear is stressed, the meshing teeth produce bending elastic deformation. Obviously, the load is larger than the no-load deformation, so the meshing impact is larger, and the node pulsation impact is also large, resulting in increased noise; in addition, the gear processing accuracy is low, and the error is large, resulting in meshing impact Large, low gear rigidity, large elastic deformation after force, and large meshing impact, these factors will increase the noise.
We can take measures to reduce the noise of the wire rope electric hoist, such as choosing a motor with as many poles as possible, the requirements for the machining accuracy of the high-speed gear, and the tooth stiffness of the high-speed gear.
