UNIVERSAL JOINT Russian patent published in 2013 - IPC B21B35/14 

FIELD: process engineering.

SUBSTANCE: invention relates to universal joints used for transmission of rotation at various angles from pinion stands or reduction gearboxes to mill stand working rolls. Universal joint comprises two split yokes consisting of interconnected base and cover with teeth in joint face and openings, trunnion with pins to articulated said yokes, and roller antifriction bearings. Transmitted torque is increased by fitting antifriction bearing rollers on trunnion pins while bearing bodies are fitted in yoke openings. Joint face of yokes is located at angle α to the pane perpendicular to universal joint lengthwise axis. Base teeth and cover of yokes are shaped to trapezoid with profile angle a. Note here that tooth side surface facing the universal joint center is parallel with its lengthwise axis while angle α equals 1.5ω where ω is misalignment angle in joint.

EFFECT: higher transmitted torque.

3 dwg