Air flotation device following motion trail of lifting point at overlength distance without being influenced by disturbing force of air tube

Abstract

The invention relates to an air flotation device following the motion trail of a lifting point at an overlength distance without being influenced by the disturbing force of an air tube, comprising an air flotation shaft, an air flotation sleeve and a guide track, wherein the air flotation sleeve is sleeved on the air flotation shaft and comprises a left air flotation sleeve and a right air flotation sleeve; the left air flotation sleeve is sleeved at the left side of the air flotation shaft, and the right air flotation sleeve is sleeved at the right side of the air flotation shaft; the middle of the air flotation shaft is provided with a lifting bed; the lifting bed is connected with a lifting rope; the lifting rope moves along with a motion member; a slide block is slidably arranged on the guide track and is fixedly connected with the left air flotation sleeve and the right air flotation sleeve; the slide block is connected with a main air tube; the main air tube is communicated with a left branched air tube and a right branched air tube; the left branched air tube is connected with the left air flotation sleeve, and the right branched air tube is connected with the right air flotation sleeve. The air flotation device effectively prevents the resistance influence generated by the air tube in the frictionless motion process of an air flotation assembly along with the motion member, has good reliability and follows the motion trail of the lifting point at the overlength distance without being influenced by the disturbing force of the air tube.

Description

technical field [0001] The invention relates to an air flotation device, in particular to a frictionless air flotation device for realizing linear motion. Background technique [0002] Air bearing, also known as air bearing, is a kind of bearing. It injects compressed gas into the shaft cavity, and the air film separates the two moving surfaces like lubricant, so that the air bearing shaft set in the bearing is suspended. , where the thickness of the gas film is between 1 and 10 microns. Compared with ordinary bearings, in addition to non-contact and frictionless relative motion, air bearings have advantages in higher rotational accuracy, high speed, reduced vibration, high shock resistance, extended service life, reduced pollution and increased axial / radial load capacity, etc. . [0003] For example, "Air Bearing Structure and Linear Driving Device Using Air Bearing Structure" patent application number CN200510085338.2 discloses a linear driving device including a linear ...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the inability of the existing air flotation device to realize ultra-long-distance movement, and the resistance influence and poor reliability of the trachea, the present invention provides a device that can effectively avoid the resistance effect of the trachea during the frictionless movement of the air flotation component with the moving parts. , a highly reliable air flotation device that is not affected by the disturbance force of the trachea and follows the trajectory of the lifting point over a long distance

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