A static pressure gas thrust bearing

Abstract

The invention discloses a static pressure gas thrust bearing. The thrust bearing includes a small-hole restrictor (3) and an annular restrictor (8), and a microscopic structure composed of an unloading passage (4), a guide passage (5) and a return passage (6) is processed in the bearing body. airway. The unloading channel (4) communicates with the pressure equalizing chamber (7) of the small hole restrictor, and the return channel (6) and the annular restrictor (8) have the same structure. The residual gas in the pressure equalizing chamber (7) can be effectively unloaded after entering the bearing gap through the unloading channel (4), the guide channel (5), the return channel (6) and the annular restrictor (8) , On the one hand, it can effectively suppress the vibration of the air hammer, so that the bearing can not be unstable under high air supply pressure, on the other hand, the residual gas can be effectively used to increase the air film pressure at the edge of the bearing. Since the air supply pressure and the air film pressure at the edge of the bearing are simultaneously increased, the overall load carrying capacity of the bearing is increased. Through the present invention, the bearing capacity of the bearing can be significantly improved, and the occurrence of air hammer vibration can be effectively avoided, so it is especially suitable for the aerospace field where the static pressure gas bearing has a heavy load requirement.

Description

technical field [0001] The invention belongs to a static pressure gas bearing, in particular to a static pressure gas thrust bearing, which can break through the limitation of air hammer vibration under high gas supply pressure and realize high bearing capacity of the bearing. Background technique [0002] The micro-low gravity simulation platform based on small-hole throttle static pressure gas thrust bearing has an important application in the ground full physical simulation test of the spacecraft, and plays a decisive role in ensuring the on-orbit performance of the spacecraft. With the gradual increase in the volume of spacecraft, especially the further increase in the scale of the space station, the realization of the full physical simulation of the spacecraft on the ground puts forward higher requirements for the load of the micro-low gravity simulation platform. For this reason, it is necessary to increase the bearing capacity of the bearing to meet the high load requ...

AI Technical Summary

Problems solved by technology

At present, the high load capacity of the static pressure gas thrust bearing with small orifice throttling is usually improved by high gas supply pressure. failure, so the air supply pressure is usually limited to within 6 atmospheres, which greatly restricts the improvement of the load-carrying capacity of the small-hole throttling static pressure gas thrust bearing

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