Contacting and rubbing device of nano-particle air film static-pressure thrust bearing

A technology of nano-particles and thrust bearings, applied in the direction of measuring devices, mechanical devices, instruments, etc., to protect the working surface and avoid severe sliding

Inactive Publication Date: 2013-09-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to study the contact friction performance of the nanoparticle gas film when it encounters a sudden impact load or suddenly stops the gas supply, a device is needed to simulate the actual working conditions of the gas bearing; however, there is no such device in the prior art

Method used

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  • Contacting and rubbing device of nano-particle air film static-pressure thrust bearing
  • Contacting and rubbing device of nano-particle air film static-pressure thrust bearing
  • Contacting and rubbing device of nano-particle air film static-pressure thrust bearing

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Embodiment Construction

[0036] The nano particle air film static pressure thrust bearing contact friction device provided by the present invention includes a base frame, a bearing part, a loading mechanism 1 and a detection system, wherein the bearing part includes an upper bearing plate 23 and a lower bearing plate 2001, and the gas-nano The mixed air flow of particles enters the inside of the bearing through the upper bearing plate 23, making the upper bearing plate 23 float, and the lower bearing plate 2001 is installed on the high-precision transmission shaft 14, and then connected with the external servo motor 19 through the synchronous toothed belt 16; from the detection The flexible measuring line 2303 drawn from the system is installed on the upper bearing plate 23 . The device can simulate the contact and friction state of the nanoparticle air film static pressure thrust bearing, can change the bearing load and the bearing speed, and can measure the friction coefficient value between the two ...

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Abstract

The invention discloses a contacting and rubbing device of a nano-particle air film static-pressure thrust bearing. The contacting and rubbing device comprises a base frame, a bearing part, a loading mechanism and a detection system. The bearing part comprises an upper bearing plate and a lower bearing plate; a mixed air flow of gas-nano particles enters the inner part of a bearing through the upper bearing plate so that the upper bearing plate floats; the lower bearing plate is mounted on a high-precision transmission shaft and is connected with an external servo motor through a synchronous cog belt; a flexible measurement line led out from the detection system is mounted on the upper bearing plate. According to the device disclosed by the invention, a contacting and rubbing state of the nano-particle air film static-pressure thrust bearing can be simulated and a gas lubricating medium with nano particles can be introduced, so that a load borne by the bearing and the rotary speed of the bearing can be changed, and a friction coefficient value between two surfaces in the contacting and rubbing process can be measured online.

Description

technical field [0001] The invention belongs to the field of research on contact and friction of gas bearings, and relates to a contact and friction device of a nano particle gas film static pressure thrust bearing. Background technique [0002] Nowadays, the application range of gas bearings is more and more extensive, especially in high-speed and high-precision occasions. However, in actual working conditions, if a sudden impact load is encountered, due to the low stiffness of the gas bearing, it will often cause contact and friction between the rotating shaft and the bearing surface. In addition, if there is a sudden power failure while the machine is running, the air compressor will stop supplying air, and the shaft running at high speed will not stop immediately. Because the gas pressure is insufficient at this time, the gas film is destroyed, and the shaft is likely to collide with the mating surface. Severe friction occurs. When the load is large, the consequences o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/02
Inventor 刁东风范红艳杨志儒
Owner XI AN JIAOTONG UNIV
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