Features of drum gear coupling

Drum type gear couplingIt is composed of parts such as an internal gear ring with the same number of teeth and a flange half coupling with external teeth.The external teeth are divided into straight teeth and drum teeth. The so-called drum teeth means that the external teeth are made into a spherical surface. The center of the spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. The drum-shaped tooth coupling can Allows a larger angular displacement (compared to the straight tooth coupling), which can improve the contact conditions of the teeth, increase the torque transmission capacity, and prolong the service life.The contact state along the tooth width when there is angular displacement.It has radial, axial and angular axis deviation compensation capabilities, and has the advantages of compact structure, small turning radius, large carrying capacity, high transmission efficiency, low noise and long maintenance cycle.The tooth end of the drum-shaped gear coupling is in the shape of a horn, which makes the assembly and disassembly of the inner and outer gears very convenient.
  Good lubrication is a necessary guarantee for the reliable operation of gear couplings, and it also reduces wear.Under the conditions of sufficient tooth root bending strength and tooth surface contact strength, the tooth width should be determined with a larger degree of overlap, and the tooth width should not be blindly increased to avoid unnecessary increase in the structural size.The general tooth width factor is 8-14. *The width of the small tooth should be determined by the allowable root stress, and the width required for the displacement of the force point along the tooth width caused by the inclination between the shafts should also be considered.