Turntable bearing for large-size celestial observation device

Abstract

The invention relates to a turntable bearing for a large-size celestial observation device, comprising an outer ring (1), an O-shaped seal ring (2), a holder (3), a large ball (4), a small ball (5), a round clamp (6), an inner ring (7), a dust shield (8) and a round baffle plate (9). The turntable bearing adopts a double-reduced ball structure and a large contact angle structure, the large ball and the small ball respectively bear axial and radial load and ensures the axial rigidity of the turntable bearing, and the small ball adopts a straight-raceway full ball structure, increases radial carrying capacity and satisfies the requirements of a low friction moment simultaneously; the dust shield and the O-shaped seal ring are adopted to seal, a raceway contact point is provided with a radial lubricating hole to indirectly lubricate the turntable bearing, and the turntable bearing can be more sufficiently lubricated and has better lubricating and sealing performance. When the turntable bearing is installed, a bracket shaft is matched with a smallest spigot of the inner ring and is fixed on a bracket (11), and a rotating table (10) is fixed on the spigot of the upper end of the outer ring to regulate a direction angle.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a turntable bearing used for large-scale astronomical observation equipment. Background technique [0002] The slewing bearings used in large-scale astronomical observation equipment require high precision, long service life, and can withstand large combined radial and axial loads. The friction torque is uniform and has good lubrication and sealing performance. [0003] Have the above-mentioned technical conditions and be used for the slewing disk bearing of large-scale astronomical observation equipment and have not yet been reported. Contents of the invention [0004] In order to solve the above-mentioned problems, the present invention designs a turntable bearing used in conjunction with large-scale astronomical observation equipment. The turntable bearing adopts a double-row structure of balls with different diameters. Rigidity and low frictional moment meet ...

AI Technical Summary

Problems solved by technology

[0003] There is no report on the slewing bearings that have the above-mentioned technical conditions and are applied to large-scale astronomical observation equipment.

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