A parameter-adjustable squeeze film damper performance test device

Abstract

The invention belongs to the field of damper performance testing devices and specifically discloses a parameter adjustable squeeze oil film damper performance testing device which comprises a false shaft, an oil film assembly and a supporting base. The oil film assembly includes an oil film inner ring and an oil film outer ring. The oil film inner ring is sleeved on an outside of the false shaft,and is matched with the false shaft through a tapered surface. The oil film outer ring is sleeved on one end, positioned near the false shaft, of the oil film inner ring; the oil film outer ring cooperates with the oil film inner ring to form an oil film gap, the oil film outer ring is connected to the supporting base through an oil film outer ring support member, and the oil film outer ring support member is provided with an oil inlet hole; a rigidity adjustable elastic rod is disposed between the oil film outer ring support member and one end, positioned away from the false shaft, of the oilfilm inner ring. The elastic rod is provided with a left adjusting check ring and a right adjusting check ring that are adjustable in position, an oil outlet hole is formed on the supporting base andis sleeved outside the oil film inner ring. The testing device disclosed in the invention can provide different test rigidity variables and different oil film thickness and width variables; the testing device is advantaged by adjustable test conditions, a large quantity of test conditions, rich test measurement parameters and the like.

Description

technical field [0001] The invention belongs to the field of damper performance testing devices, and more particularly relates to a parameter-adjustable extrusion oil film damper performance testing device. Background technique [0002] Squeeze oil film damper is widely used in rotor support structures such as aero-engines and machine tools. It has two main functions: to adjust the critical speed of the rotor to avoid the working speed; Therefore, it is of great significance to study and understand the characteristics of the squeeze film damper. The characteristics of the squeeze film damper generally depend on the elastic support stiffness, the thickness and width of the squeeze oil film, the characteristics of the lubricating oil, etc., especially the elastic support stiffness, the thickness and width of the squeeze oil film, etc. characteristics and damping characteristics have a great influence. [0003] In the process of studying the characteristics of the squeeze fil...

AI Technical Summary

Problems solved by technology

Due to the high accuracy requirements of the key damping oil film in the damper (generally, the manufacturing accuracy is at the level of 10 microns), it brings certain difficulties to the research of the damper test. When the damper needs to change the parameters, it is generally necessary to manufacture multiple parts for replacement. Not only the design and processing costs are high, time-consuming and laborious, but also the disassembly and assembly time is long for each test, and each disassembly and assembly will change the original assembly relationship and installation state to a certain extent, resulting in each group of tests cannot be well controlled Variables, resulting in poor repeatability of test results

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