Reliably-connected and adjustable bearing pre-tightening structure and assembling and adjusting method

Abstract

The invention discloses a reliably-connected and adjustable bearing pre-tightening structure and an assembling and adjusting method. Two adjusting rings are installed on the external threaded face of each rotating shaft, a gap is reserved between every two corresponding adjusting rings, the two adjusting rings deform and are fixed to the rotating shafts under the action of fastening force of screws on the two adjusting rings, the gap between every two corresponding adjusting rings is adjustable, and therefore the fastening force of the adjusting rings and the rotating shafts is controlled. When a stabilization platform bears the working load which is in the direction the same as or opposite to the pre-tightening direction of bearings and is larger than the pre-tightening force, threaded pressing rings are reliably connected with the rotating shaft, the connecting force between the threaded pressing rings on the two sides and the rotating shaft can be adjusted according to different working loads, and meanwhile a shafting does not need to be disassembled.

Description

technical field [0001] The invention relates to the technical field of bearing structure design, in particular to a reliably connected and adjustable bearing preload structure and an assembly method. Background technique [0002] The main function of the stable platform is to carry the load and realize the stable rotary motion of the load. The typical rotary shaft system of the stable platform is mainly composed of an inner ring frame, an outer ring frame, a rotating shaft, a bearing, a bearing pressure ring and fasteners. [0003] For bearings in precision machinery, in order to improve their rotation accuracy under working loads, it is necessary to preload the bearings when assembling them. A typical bearing preload structure is to install a washer between the shaft and the inner ring of the bearing. The adjustment of the bearing preload is realized by controlling the thickness of the washer. When the bearing preload needs to be readjusted, the shafting must be dismantled ...

AI Technical Summary

Problems solved by technology

A typical bearing preload structure includes installing a washer between the shaft and the inner ring of the bearing. The adjustment of the bearing preload is achieved by controlling the thickness of the washer. When the bearing preload needs to be readjusted, the shafting must be disassembled to replace the gasket. Operation Complex, even recalibration and testing of other related links of precision shafting

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