Features of two special types of plum elastic couplings

1. LMS (formerly MLS) type-double flange typePlum couplingIt has the following characteristics: The flower-shaped elastic coupling has simple structure, small radial size, light weight, and small moment of inertia. It is suitable for medium and high-speed applications. The plum-shaped elastic coupling is stable and reliable, and has good vibration reduction, buffering and electrical insulation. performance.The quincunx-shaped elastic coupling has large axial, radial and angular compensation capabilities. The quincunx-shaped elastic coupling has high-strength polyurethane elastic elements that are wear-resistant and oil-resistant, have large load-bearing capacity, long service life, and reliable coupling. No need for lubrication, low maintenance workload, and continuous long-term operation.

　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。
ML series quincunx elastic coupling is mainly composed of two protruding teeth that are closely meshed and subjected to radial compression to transmit torque. When the two axes are relatively offset, the elastic element undergoes corresponding elastic deformation and plays a role of automatic compensation.
 2. The LMD (formerly MLZ) single-flange plum blossom elastic coupling is mainly composed of two protruding teeth that are 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.
　　There are two main types of plum blossom couplings, one is the traditional straight claw type, and the other is the curved (concave) claw type zero-backlash coupling.The traditional straight-jaw plum blossom coupling is not suitable for use in high-precision servo transmission applications.The zero-backlash claw type plum blossom coupling evolved on the basis of the straight claw type, but the difference is that its design can be adapted to the application of the servo system, and is often used to connect servo motors, stepping motors and ball screws.The curved surface is to reduce the deformation of the elastic plum spacer and limit the influence of centripetal force on it during high-speed operation.
　　Plum couplingAn integral plum-shaped elastic ring is installed between the protruding claws of two half-couplings of the same shape to realize the connection of the two half-couplings.The power is transmitted through the squeezing between the claw and the elastic ring, and the relative deviation of the two shafts is compensated by the elastic deformation of the elastic ring to realize vibration damping and buffering.This kind of coupling has been standardized, GB/T5272-2002 formulated five structural forms: LM type (basic type), LMD type (single flange type), LMS type (double flange type), LMZ-I type ( Split brake wheel type) and LNZ-II (full brake wheel type).There are 14 specifications for each type. The applicable shaft hole diameter d=12-160mm, the shaft hole length L=35-135mm, the nominal torque T=25-25000N.m, and the allowable speed [n]=1500- 15300r.min.