Reciprocating swing type four point contact ball rotating disk bearing

Abstract

The invention relates to a reciprocating swing type four point contact ball rotating disk bearing. The rotating disk bearing which comprises an outer ring, an inner ring and steel balls is characterized in that: the outer ring and the inner ring are respectively formed by connecting two parallel line segments and two arc segments, two arc segments are respectively positioned on and connected with two ends of each line segment, joints are smooth arc transitions, the curvature of the arc segments of the outer ring is equal to the curvature of the arc segments of the inner ring, and the angle of the arc segments of the inner ring is less than the angle of the arc segments of the outer ring; the arc segments of the outer ring and the arc segments of the inner ring are provided with a peach-shaped raceway, steel ball socket blocks, a spring, a limiting block, and a spring containing block are arranged in the raceway, and the steel balls on the raceway are arranged on the arc segment between the steel ball socket blocks on two ends. The rotating disk bearing which has the advantages of simple structure and novel conception allows the rotating movement angle of the steel balls to be limited after that a work system moves, so the limiting block allows the limiting angle position of the steel ball movement to be guaranteed; and the angle of the arc segments of the outer ring is greater than the angle of the arc segments of the inner ring, so the low angle range swinging of the inner ring does not allow the movement interference to appear.

Description

technical field [0001] The invention relates to a turntable bearing, in particular to a reciprocating swing type four-point contact ball turntable bearing. Background technique [0002] The four-point contact ball slewing bearing is a large-scale slewing bearing with a special structure. The raceways of the inner ring and the outer ring are composed of two arcs whose centers do not overlap. When there is no load or pure radial load, the steel ball and The ferrule appears as a four-point contact. Four-point contact ball slewing bearings can withstand comprehensive loads such as axial loads, radial loads, and overturning moments. Four-point contact ball bearings can only guarantee normal operation when they form two-point contact, so they are widely used in lifting machinery, mining machinery, construction, etc. Machinery, port machinery, ship machinery, high-precision radar machinery and missile launchers and other large-scale rotary devices are in two-point contact under pu...

AI Technical Summary

Problems solved by technology

The four-point contact ball slewing bearing has a special structure and many processing procedures. The inner ring and outer ring raceway of the peach-shaped section need to be completed by profiling grinding, which requires heavy workload and huge cost; due to the large volume of the four-point contact ball slewing bearing, the quality Heavy, the change of processing occasions, on the one hand, reduces the processing accuracy, and on the other hand, increases the production cost

In some special occasions, the four-point contact ball slewing bearing only performs simple swinging motion, and the swinging angle is limited.

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