Showing papers on "Slewing bearing published in 2000"
Patent•
30 Jun 2000
TL;DR: In this paper, the double row slewing bearing with rows of rolling grooves was proposed to provide a double row bearing in which a rolling element can be easily inserted into a rolling path through an insertion hole.
Abstract: PROBLEM TO BE SOLVED: To provide a double row slewing bearing in which a rolling element can be easily inserted into a rolling path through an insertion hole in an inner ring or an outer ring, a proper preload can be applied to the rolling elements, and the insertion hole can be easily closed. SOLUTION: In the double row slewing bearing 10 comprising the outer ring 11 provided with rows of rolling grooves 18, 18 around the inner periphery thereof, the inner ring 12 which is arranged inside of the outer ring 11 and is provided with rows of rolling grooves 19, 19 around the outer periphery thereof in the positions corresponding to those of the rolling grooves 18, 18 of the outer ring 11, and a plurality of rolling element 13 which are loaded in the rolling paths 20, 20 formed between the rolling grooves of the inner and outer rings, the insertion holes 21 penetrating radially through the outer ring 11 (or the inner ring 12) which enable insertion of the rolling elements 13 are provided in the outer ring 11 (or the inner ring 12). The insertion hole 21 are arranged for each rolling path 20, 20 individually.
20 citations
Patent•
28 Jun 2000
TL;DR: In this article, the authors proposed a utility model for a multifunctional pile-forming machine, where the inside of a speed reduction box body moving up and down along a guide rod of the auxiliary machine is provided with an external tooth type slewing ring; an inner ring is fixed with the speed reduction body, and both sides of the main motor are respectively provided with a main motor.
Abstract: The utility model relates to a multifunctional pile-forming machine, which comprises an auxiliary machine; the inside of a speed reduction box body moving up and down along a guide rod of the auxiliary machine is provided with an external tooth type slewing ring; an inner ring is fixed with the speed reduction box body, and both sides of the speed reduction box body are respectively provided with a main motor; an outer gear ring of the slewing ring is engaged with an output gear, and is fixed with rotary drilling bodies; a hammer rod is penetrated through the speed reduction box body, and the slewing ring is sheathed in the holes of the rotary drilling bodies. The utility model is characterized in that detachable rotary drilling bodies, such as, an outer twist drill and an outer sleeve pipe, can be mutually interchanged, and can be respectively matched with the hammer rod sheathed in the holes. The utility model has the advantages of detachable multiple combination, one machine with multifunction, high machine utilization rate, no vibration and noise and low cost.
1 citations