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Device and method for measuring friction characteristics of rocking bearing under the combined action of shaft radial load

A radial load and co-action technology, which is used in measuring devices, mechanical bearing testing, and the use of mechanical devices to achieve the effects of accurate bearing rocking boundaries, high load loading accuracy, and high data accuracy

Active Publication Date: 2018-04-20
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the measurement limitations of existing rocking bearing friction torque measuring devices, the present invention provides a rocking bearing friction characteristic measuring device and method

Method used

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  • Device and method for measuring friction characteristics of rocking bearing under the combined action of shaft radial load
  • Device and method for measuring friction characteristics of rocking bearing under the combined action of shaft radial load
  • Device and method for measuring friction characteristics of rocking bearing under the combined action of shaft radial load

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Embodiment

[0048] (1) attached figure 1 , attached image 3 , attached Figure 4 The process bearing 25, the test bearing 23 and the auxiliary bearing 19 with an inner diameter of 70 mm, an outer diameter of 105 mm, an inner ring width of 49 mm, and an outer ring width of 40 mm are combined with the swing shaft 22, the process shaft 20, the bearing plate 21, and the diameter of the radial loading assembly. Install the servo oil cylinder 17, the third load sensor 16, the gantry frame 8, the bearing platform 1, etc. to the load. One end of the process shaft 20 is designed as a step, and the other end is a threaded structure, and the threaded end is fixed by a nut to constrain the horizontal displacement of each component on the process shaft. The same one end of the rocking shaft 22 is designed as a stepped form, and the other end utilizes a nut to fix and constrain the horizontal displacement of each part on the rocking shaft. 1000mm;

[0049] (2) Radial load loading The servo cylinde...

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Abstract

The invention relates to a swing bearing friction characteristics measuring device and method under joint actions of an axial and a radial load. The friction characteristics measuring device comprises a swing bearing, a radial loading component, an axial loading component, a swing drive component and a torque measuring sensor. The swing bearing arranged among the left bearing plate and the right bearing plate and a swing axle on the radial loading component is a measured test bearing; the two swing bearings arranged between the swing axle and a radial load loading servo cylinder is a technical bearing; and the swing bearing arranged between the two bearing plates and the technical axle is an auxiliary bearing. A radial load is loaded in the vertical direction by a radial force loading component. An axial load of the measured test bearing is realized by two axial loading components applying tensile loads in opposite direction at the bearing plate loading point in the horizontal direction respectively. According to the invention, a hard problem that the measured test bearing has to rotate and apply the radial load as well as the axial load during the bearing friction measuring process is solved.

Description

technical field [0001] The invention relates to a device and method for measuring the friction characteristics of a rocking bearing under the joint action of shaft and radial loads, which is applied to the rocking bearing of a liquid rocket rocking engine moving at a certain swing angle and frequency under the joint action of radial and axial loads Friction torque measurement. Background technique [0002] The rocking bearing is the key component of the liquid rocket rocking engine. It must bear large tonnage radial load and axial load during operation, and swing at a small angle at a certain frequency. The friction characteristics of the pendulum bearing directly affect the load and dynamic characteristics of the servo drive system, and even affect the attitude control accuracy of the rocket body. Therefore, it is necessary to accurately measure the friction characteristics of the pendulum bearing under working conditions. Affected by the structural form and working condit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00G01M13/04G01N19/00
CPCG01L5/0009G01M13/04G01N19/00
Inventor 周云端李锋雷诗莹杨孟博袁军社王婷庞勇
Owner XIAN AEROSPACE PROPULSION INST
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