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Showing papers on "Slewing bearing published in 1984"


Patent
03 Sep 1984
TL;DR: In this article, an annular groove was used to attach a slewing bearing and a fitting reference hole reduction gear for the fitting of a cylinder with a spigot hole in its upper end inner surface.
Abstract: PURPOSE:To make easier the machining and fabrication of slewing mechanism fitting part by fitting a cylinder having a spigot hole in its upper end inner surface and a spigot projection on its lower end inner surface into the upper frame provided with a slewing bearing-fitting annular groove and a fitting reference hole reduction gear for slewing mechanism. CONSTITUTION:An annular groove 11 to attach a slewing bearing 3 is machined on the downside of an upper frame 10, and a large-diameter slewing reduction gear fitting reference hole 16 vertically passed is machined in places spaced at a given interval on the turning center side from the fitting portion 11. In the slewing reduction gear fitting part 20, a flange 22 is integrally provided to the upper end periphery of a cylinder 21. A spigot hole 23 for fitting the slewing reduction gear is provided in the inner surface of the upper end of the fitting part 20, a spigot projection 26 is provided on the periphery of the lower part, and then under the condition that the spigot projection 26 is fitted into a reference hole 16, the cylinder 21 is fixed to the upper frame 10. The slewing reduction gear fitting part of the upper frame 10 is machined and fabricated.

1 citations