LMZ-I plum blossom coupling is a kind of elastic coupling. It is widely used in the transmission field of pulverized coal machine. It is widely used by customers, such as large amount, simple to use and low price. LMZ-I plum blossom coupling: The working principle is to install a whole plum blossom-shaped elastic ring between the claws of two half-couplings of the same shape to realize the connection of the two halves of the coupling.The main materials are cast steel and 45# steel; the connection forms include keyway connection, set screw connection, clamping connection, or a combination of two forms of connection.There are many types to choose from, such as keyway type, clamping type, extended type, flange type and so on.

　　The elastic body of LMZ-I plum blossom coupling has two colors, red and yellow, and the shape is hard, if the light can not distinguish the quality of the material from the shape.But according to physical changes, the difference in material can be distinguished.The method is to heat water to bring the temperature to 100℃. When the temperature reaches a certain value, it can be found that the harder LMZ-I plum blossom coupling elastomer is made of polyurethane, while the soft LMZ-I plum blossom coupling elastomer It is made of poly deer.Another way of identification is to smell. Good elastomers basically don't have a big odor, while second elastomers have a more pungent odor.A good plum elastic body becomes light and shiny.And the second plum blossom elastic body is black, not bright. There are two main types of LMZ-I plum blossom couplings, one is the traditional straight claw type, and the other is the curved (inward) claw type zero-backlash coupling.The traditional straight-jaw type LMZ-I plum blossom coupling is not suitable for high-precision servo transmission applications.The zero-backlash claw type LMZ-I plum blossom coupling is evolved on the basis of the straight claw type, but the difference is that its design can be suitable for the application of the servo system. It 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.The zero-clearance claw coupling consists of two metal sleeves (usually made of aluminum alloy, stainless steel can also be provided) and a plum blossom elastic spacer.

　　The welded LMZ-I plum blossom coupling can be used normally without affecting the torque and speed and the service life of the coupling.But for the welding process, there are many places to be perfected and in place, such as welding rods and currents, and the size of the coupling groove have strict standard requirements.Let me talk about some welding methods that will reduce the quality of low-carbon steel welded joints.Such as electroslag welding, due to the large heat input, the grains of the coarse-grained zone in the welding heat-affected zone will grow very coarse, causing a serious decrease in impact toughness. After welding, normalizing treatment of grain refinement is necessary to improve Impact toughness.The second is the problem of the coupling groove, which should be greater than 45 degrees and 5mm in depth. It is easy to nail the welding when welding, so that the welded coupling will not have quality problems, but for couplings with small torque, This operation can be carried out, and the welding process should not be used for the outer circle LMZ-I plum blossom coupling with a diameter of more than 180, because the outer diameter will cause large torque, which will affect the service life of the coupling.