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What are the characteristics of the diaphragm coupling

Publication time: November 2016, 11【L Small

  Diaphragm couplings rely on metal diaphragms to transmit torque and absorb deformation caused by misalignment. There is no relative movement between parts, no friction or wear, so it does not need lubrication, which is in line with the development direction of oil-free process equipment.The gear coupling is a rigid movable coupling. It relies on the relative slippage between the tooth surfaces to compensate for the misalignment of the two shafts. Therefore, the gear coupling should be lubricated, and the lubrication condition determines the gear coupling The key to good or bad work.Especially when running at high speed, it is more prominent, such as the separation and leakage of oil under the action of centrifugal force, as well as the choice of lubricating oil, often because the lubrication design uses the bearing lubricating oil of the connected machine, rather than the carrying capacity More suitable gear lubricants.Therefore, the lubrication problem of high-speed gear couplings is particularly prominent.On the other hand, the wear caused by the relative slip of the tooth surface will cause a series of problems such as sludge and imbalance.Therefore, although gear couplings were once the best choice for high-speed and high-power applications, with the emergence and development of diaphragm couplings, gear couplings have gradually faded out.

  What are the characteristics of the diaphragm coupling:

  1. It has obvious shock absorption, no noise and no wear.

  2. The transmission efficiency is high, up to 99.86.Especially suitable for medium, high speed and high power transmission.

  3. It can accurately transmit the speed without slip, and can be used for the transmission of precision machinery.

  4. It is suitable for working in high temperature (-80+300) and harsh environment, and can move under shock and vibration conditions.

  5. Simple structure, light weight, small size, convenient assembly and disassembly.It can be assembled and disassembled without moving the machine (refers to the type with intermediate shaft) and does not need lubrication.

  6. The ability to compensate for the misalignment of the two axes is strong. Compared with the gear coupling, the angular displacement can be doubled, the reaction force is small during radial displacement, the flexibility is large, and certain axial, radial and angular directions are allowed Displacement.

Keywords of this article:Plum coupling | Oldham coupling | Pin coupling |