High-speed water bearing performance test device with air seal
A gas seal and test device technology, applied in the field of lubrication and bearings, can solve the problems of identification, unsatisfactory, complex loading mechanism and measurement system, etc., and achieve the effect of flexible disassembly and easy replacement
Inactive Publication Date: 2012-10-24
SOUTHEAST UNIV
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Problems solved by technology
The test conditions of these devices are relatively close to the actual working conditions of the bearing, but generally adopt an inverted structure, the loading mechanism and the measurement system are very complicated, and are mainly used to measure the oil film pressure and temperature rise, or to test the performance and life of the sliding bearing. Even the problems of cavitation erosion, drag reduction and gas sealing of the bearing cannot be identified by dynamic parameters, which cannot meet the requirements of high-speed water bearing performance test
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0022] Such as figure 1 with 2 Shown: a high-speed water bearing performance test device with gas seal, its core part is the shafting part 4 with gas seal, mainly composed of test bearing bush 14, gas seal 12, small hole restrictor 13, sleeve 20 , O-shaped rubber seal ring 19, main shaft 18, end cover 11 and other components. In the example, the diameter of two water bearings with a certain span is 52 mm, and the initial installation radial gap between the main shaft 18 and the test bearing bush 14 is 20 um; Then put the gas seal 12 into the sleeve 20 from the gap at both ends, and press the gas seal 12 and the test bearing bush 14 by adjusting the hexagon socket head screw on the end cover 11, and finally insert the main shaft 18, and the two ends of the main shaft 18 Threads are tapped on the end and the center of mass plane to install th...
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The invention discloses a high-speed water bearing performance test device with an air seal, which comprises a shaft system component, a loading component, a supporting component, a driving system, a water supply system and a measurement system. In the high-speed water bearing performance test device, two shaft system structures of water bearing support with a certain span are adopted; two ends of the shaft system are applied with static load; a main electric shaft directly drives the shaft system to rotate at a high speed; the working condition environment of the dynamic load is simulated by an imbalance block; and a bearing bush and the air seal can be flexibly disassembled. The high-speed water bearing performance test device with the air seal can be used for an air seal test of the high-speed water bearing, a cavitation erosion and resistance reduction test, an identification test of an oil membrane dynamic characteristic coefficient and the like, and provides a reliable method for simulating the test environment and evaluating for the research and the application of the high-speed water bearing.
Description
technical field [0001] The invention relates to a high-speed water bearing performance test device with gas seal, which can realize cavitation erosion, drag reduction, sealing and dynamic characteristics tests of different bearing structures and materials under different rotating speeds and loads, and belongs to lubrication and bearing technology. Background technique [0002] High-speed water bearings have a series of advantages such as good viscosity-temperature characteristics, high stiffness, good damping characteristics, high precision, and long life, and have been successfully applied in the spindle unit of high-speed and high-precision CNC machine tools. However, compared with traditional oil bearings, high-speed water bearings are more prone to cavitation damage, and still have large turbulent friction power consumption. If they work for a long time, they can cause vibration, noise, instability, material damage, and life-span reduction. , or even serious accidents. ...
Claims
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IPC IPC(8): G01M13/04
Inventor 蒋书运程峰
Owner SOUTHEAST UNIV