Disadvantages and troubleshooting of serpentine spring coupling

　　The serpentine reeds of the serpentine spring coupling and the curved tooth surfaces on the outer gear shaft sleeve are difficult to manufacture due to their complex shapes.When the snake reed is manufactured, not only a large number of special forming molds are required, but the dimensional accuracy is also difficult to meet the design requirements.The formation of the snake spring is achieved by using a mold under heating, and then heat treatment. During the heat treatment, the arc of the spring is prone to problems such as micro cracks.
　　Since the working condition of the mine hoist is working under constant positive and reverse starting shock conditions, and there is a displacement error between the two connected shafts, if the spring quality is not good, the snake reed will be fatigued quickly Cracks, under repeated impact loads, the cracks will expand and break quickly, especially in some mines that are overloaded, the life of the snake reed is short.The serpentine spring coupling has a lot of noise during operation, the installation of the reed is time-consuming and laborious, the price of accessories is high, and it works under lubricated conditions.The serpentine springs are subjected to bending stress before being overloaded under different loads, but when overloaded, the springs are not only subjected to bending stress, but also to shearing virtual force.The mine hoist works under frequent positive and negative impacts, so the reed is easy to break.
　　In order to reduce the breakage of the snake reed, we should strive to do the following:
　　(1) Pay attention to adjusting the concentricity error and angle error between the two shafts, and make it as small as possible than the value required by the design.
　　(2) Improve the quality of the spring leaf.Pay special attention to the material, hardness, heat treatment quality, etc. After heat treatment, there should be no defects such as cracks, pay attention to the sharp corners and sharp edges on the reed and the tooth corner); improve the processing quality of the arc tooth surface.
　　(3) Choose lubricating grease reasonably, not using thinner lubricating oil, but using aluminum disulfide grease with higher viscosity.
　　(4) To control the load, do not use overload; reduce the frequent effect of braking, especially emergency braking.
　　(5) When new, a new type of elastic rod-pin coupling should be used.