Introduction
Drum-shaped gear ring gear is the same number of teeth by the ring
and the outer teeth of the flange half coupling and other
components.
Foreign teeth are divided into straight and drum teeth two
tooth-shaped, the so-called drum teeth is made of spherical teeth.
The center of the sphere is on the gear axis, The tooth side gap is
larger than the normal gear, and the drum-shaped gear coupling can
allow larger angular displacement (relative to the straight
coupling) to improve the contact condition of the teeth, improve
the transmission torque and prolong the service life. Angular
contact state along the tooth width.
Advantages of gear couplings
1. Strong carrying capacity. Under the same outer diameter of the
inner sleeve and the large outer diameter of the coupling, the
bearing capacity of the gear coupling is on average 15 to 20%
higher than that of the straight gear coupling
2. Large amount of angular displacement compensation. When the
radial displacement is equal to zero, the allowable angular
displacement of the spur gear coupling is 1 °, and the allowable
angular displacement of the gear coupling is 1 ° 30 ', an increase
of 50%. Under the same modulus, number of teeth, and tooth width,
the allowable angular displacement of the drum teeth is greater
than that of the straight teeth.
3. Drum-shaped tooth surface improves the contact conditions of the
internal and external teeth, avoids the disadvantages of straight
tooth tooth edge compression under the condition of angular
displacement, stress concentration, and improves the friction and
wear of the tooth surface, reducing the Noise, long maintenance
intervals.
4. The tooth end of the outer gear sleeve is in the shape of a
horn, which makes the assembly and disassembly of the inner and
outer teeth very convenient.
5. Transmission efficiency is as high as 99.7%.
