84results about How to "Reduce records" patented technology

The invention belongs to the liquid rocket engine technology field and especially relates to an angular-contact ball-bearing radial static stiffness measurement apparatus. A support is vertically fixed to a pedestal. A reducing sleeve is connected to the support. Adjusting pad I, a left side bearing, a baffle disc I, a left side disc spring, a disc spring isolation pad, a right side disc spring, a baffle disc II, an adjustment pad between bearings, a right side bearing and an adjusting pad II successively sleeve a stress application shaft. A tightening nut is screwed on the stress application shaft. According to a tightening torque requirement, a load is applied and then an assembly passes through the reducing sleeve. Two bearings are uniformly distributed on left and right positions of a middle portion of the reducing sleeve. Two hydraulic assistors are symmetrically placed on two sides of the stress application shaft, are fixed to the pedestal and are close to the support. A pressing plate is fixed to the reducing sleeve. Two electrical vortex sensors are installed on two ends of the pressing plate. The apparatus can be used for measuring double-row constant-pressure preloaded angular contact bearing radial static stiffness and possesses certain versatility, accuracy and convenience in the liquid rocket engine field.