Comparison of characteristics of sliding block coupling and clamping shell coupling
Time: 2018-04-15 Browse:
The slider coupling is a flexible coupling without elastic elements, while the clamp coupling is a rigid coupling. The main difference is that they are all non-elastic elements but the slider coupling can compensate for relative displacement, while the clamp Shell couplings can’t. I just introduced them simply from the aspect of compensation. Here are the respective structures and features: 1. The structure of the slider coupling is that there are two types of couplings: one is called The structure of the SL cross slider coupling is composed of two half couplings with grooves on the end faces and a middle disc with convex teeth on both sides.When working with relative displacement between the two shafts, the middle disk will generate a large centrifugal force, which will increase the dynamic load and wear.Therefore, when selecting, pay attention that its working speed should not be greater than the specified value.This kind of coupling is generally used for rotating speed n<250r/min, and the shaft has greater rigidity and no severe impact. Another type of slider coupling is called WH type, and its structure is composed of two shaft sleeves. It is composed of a square sliding block. This square sliding block is usually made of engineering plastics as a torque transmitting element. The nylon block is commonly used. In special cases, other materials, such as metal materials, can be selected.This coupling has high noise, low efficiency and fast wear. Generally, it is not used as much as possible. It is only used in the occasions with very low speed. The slider coupling specified in this standard is suitable for oil pump devices or other occasions with small transmission torque. The relative offset of the two shafts must be compensated, shock absorption and cushioning performance; its working temperature is -20~70°C, and the nominal torque of transmission is 16~500N.m. ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? 2. The structure of the clamp shell coupling is that the clamp shell coupling uses two split shells along the axial direction, which are clamped by bolts to realize the connection of the two shafts, and are transmitted by the friction between the two halves of the coupling surface. Torque, use flat key for auxiliary connection.During assembly and disassembly of the clamp housing coupling, the shaft does not need to move axially, so the assembly and disassembly are very convenient. The disadvantage of the clamp housing coupling is that the accuracy of the axis of the two shafts is low, the structure and shape are more complicated, and the manufacturing and balance accuracy is low. , Only suitable for low speed and stable load occasions, usually the maximum outer edge linear velocity is not more than 5m/s, when the linear velocity exceeds 5m/s, balance verification is required.In order to improve the balance, the bolts should be installed between the forward and reverse phases.Jacketed couplings do not have axial, radial and angular compensation performance.The characteristics of the vertical clamp coupling are similar to those of the clamp coupling, simple structure, easy to assemble and disassemble, suitable for low speed (maximum peripheral speed of 5M/S), no impact, and stable vibration load occasions. For the connection of vertical shafts such as agitator.