Showing papers on "Slewing bearing published in 1969"
Patent•
22 Oct 1969
TL;DR: In this article, a jib-crane has a slewing bearing which incorporates a resilient ring, which enables the platform 2 to tilt when the centre of gravity of the load moves outside the slewing ring, thereby deforming the race and spreading the load over more balls in the race.
Abstract: 1,167,821 Slewing bearings for jib-cranes KLOCKNER-WERKE AG 6 Jan, 1967, No 970/67 Heading B8B [Also in Divisions E1 and F2] A jib-crane has a slewing bearing which incorporates a resilient ring 24, Fig 3, between bearing surface 23 of a slewing platform 2 and the upper surface of the upper part 15 of the race which rotates with the platform 2 This enables the platform 2 to tilt when the centre of gravity of the load moves outside the slewing ring, thereby deforming the race and spreading the load over more balls in the race Fig 4 shows an embodiment which has two resilient rings 24, 38 The resilient rings may be of metal having a smaller modulus of elasticity then steel, synthetic plastics materials, hard wood or an assembly of spring steel rings Fig 5 (not shown), illustrates the latter
4 citations