The LMZ-Ⅱ (formerly MLL-Ⅱ) type of plum blossom elastic coupling with brake wheel is composed of two half-couplings with the same shape of the protruding claws and elastic elements. The plum blossom-shaped elastic element is used to place the two halves of the coupling. Between the claws to realize the coupling of the two halves of the coupling.It has the characteristics of compensating for the relative deviation of the two shafts, damping, buffering, small radial size, simple structure, no lubrication, high carrying capacity, convenient maintenance, etc., but the two halves of the coupling must be moved in the axial direction when changing the elastic element.It is suitable for connecting two coaxial lines, frequent starting, forward and reverse changes, medium and low speed, medium and small power transmission shaft systems, and working parts that require high working reliability. It is not suitable for heavy loads and restricted axial dimensions, after changing elastic components The two axes are difficult to align.
1. The LMZ-I split brake wheel plum blossom elastic coupling is mainly composed of two convex teeth closely meshed and subjected to radial compression to transmit torque. When the two axes are relatively offset, the elastic element will respond accordingly. Elastic deformation plays a role of automatic compensation.
2、梅花形弹性联轴器主要适用于起动频繁、正反转、中高速、中等扭矩和要求高可靠性的工作场合，例如：冶金、矿山、石油、化工、起重、运输、轻工、纺织、 水泵、风机等。工作环境温度 -35℃～+80℃，传递公称扭矩25～12500Nm，许用转速1500～15300r/min。
3. Compared with other plum-shaped couplings, plum-shaped elastic couplings have the following characteristics:
(1) Stable and reliable work, with good vibration damping, buffering and electrical insulation properties.
(2) Simple structure, small radial size, light weight, small moment of inertia, suitable for medium and high speed occasions.
(3) It has large axial, radial and angular compensation capabilities.
(4) High-strength polyurethane elastic elements are wear-resistant and oil-resistant, have large carrying capacity, long service life, and reliability.
(5) The coupling does not need to be lubricated, the maintenance workload is small, and it can run continuously for a long time.
After the revision of the standard, the plum-shaped elastic elements are made of polyurethane and cast nylon.According to different working conditions, choose different materials, such as fans, water pumps, light industry, textiles, etc. When the work is stable and the load changes little, polyurethane can be selected.The prices of the two materials are quite different.
Basic performance parameters and main dimensions of MLL-Ⅱ plum blossom elastic coupling with brake wheel
