gear
CouplingA removable rigid coupling consisting of an outer sleeve with internal teeth and flanges and an inner sleeve with external teeth.The hub of the inner sleeve is respectively connected with the driving shaft and the driven shaft; the two outer sleeves are fixed together by bolts outside the flange.When working, the internal teeth and external teeth make meshing motion.The inner and outer teeth mostly adopt involute tooth profile with a pressure angle of 20°, and the tooth side clearance is larger than that of ordinary gear pairs.The external tooth tip circle generatrix is made into a spherical surface, and the center of the spherical surface is on the gear axis, so it has the characteristics of compensating the relative radial, axial and angular displacement of the two shaft axes.
In order to improve the contact conditions of the teeth, increase the bearing capacity of the coupling, and increase the allowable relative angular displacement of the two shafts, drum-shaped teeth can be used, that is, the pitch circle and root circle in the width direction of the external tooth are changed from a straight line to an arc. The cross-section of the teeth is drum-shaped to reduce or avoid the interference of the meshing surface and poor contact due to the deflection of the axis.The arc of the drum tooth can also be composed of arcs with different radii of curvature to obtain the best tooth profile suitable for axis deflection of different sizes.The gear coupling has more teeth to work at the same time, small size, large carrying capacity, and reliable operation at high speed.The thin-shell cylindrical intermediate gear sleeve gear coupling can adapt to a speed of up to 20000 rpm.