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High-speed testing machine for gear shaft bearing pack

A bearing group and testing machine technology, applied in the direction of mechanical bearing testing, etc., can solve the problems of inaccurate performance of service life, difficulty in evaluating the operating state of bearings, and inability to simulate helicopter working conditions well, so as to achieve real force and simulation effect accurate effect

Pending Publication Date: 2021-07-30
C&U CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bearing life is a key indicator for judging bearings. Commonly used bearing life tests can only judge the life of a single set of bearings. However, in actual use, two or more sets of bearings are often used together. It is difficult for conventional life testing machines to evaluate the actual operating status of bearings.
[0003] Although there are some testing machines for testing bearing life in the prior art, such testing machines can only detect high-speed rotation of bearings or one-way force, etc., and cannot simulate the working conditions of helicopters well, so the obtained The test results cannot accurately represent the service life under actual operating conditions

Method used

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  • High-speed testing machine for gear shaft bearing pack
  • High-speed testing machine for gear shaft bearing pack
  • High-speed testing machine for gear shaft bearing pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high-speed testing machine for a gear shaft bearing group, the high-speed testing machine includes a bearing group and a force applying component 1 for applying force to the bearing group; the bearing group includes a test bearing 31 and a test bearing group that are coaxially connected to a rotating shaft 2 32. The inner ring of the accompanying test bearing 31 and the test bearing group 32 is sleeved on the rotating shaft 2 and is relatively fixed with the rotating shaft 2; Transfer to the transfer test bearing set 32.

[0034] In this design, the force application assembly 1 that can apply force in various directions to the test bearing 31 and the test bearing group 32 is adopted. At this time, it can simulate the working condition that the gear shaft of the helicopter is subjected to forces in various directions. At this time, it is easy to receive the force brought by different bevel gears. This scheme can simulate the force brought by each bevel gear, and then s...

Embodiment 2

[0040] Based on the solution of Embodiment 1, this embodiment sets the force application assembly 1 as a split type, which is specifically divided into a radial loading assembly and an axial loading assembly 12, so as to apply radial and axial forces to the test bearing 31 respectively. At this time, it is possible to simulate the radial and axial forces on the rotating shaft 2, and to show a more accurate force situation. Moreover, the requirement for the volume of the equipment is also small, and the integrated design will easily lead to an increase in volume, which is not conducive to optimization.

[0041] More specifically, in this embodiment, the radial loading assembly includes a radial vertical loading assembly 111 and a radial horizontal loading assembly 112 that can independently adjust the application force.

[0042] The radial loading component has forces applied in two directions. At this time, the forces in the two directions can be changed through independent ad...

Embodiment 3

[0044] A further modification is made based on the above-mentioned embodiment, the rotating shaft 2 has two sections with different diameters, which are respectively used to install the joints 41 of bearings with different inner diameters in the test bearing set 32 ​​.

[0045] Two bearings of different sizes can be detected simultaneously through the joints 41 with different diameters at both ends, and the detection efficiency can be improved.

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Abstract

The invention discloses a high-speed testing machine for a gear shaft bearing pack. The high-speed testing machine comprises a bearing pack and a force application assembly used for applying force to the bearing pack. The bearing pack comprises an accompanying test bearing and a test bearing pack which are coaxially connected to a rotating shaft; the inner rings of the accompanying test bearing and the test bearing pack are sleeved on the rotating shaft and are fixed relative to the rotating shaft; the force application assembly cooperates with the accompanying test bearing to apply forces in all directions to the accompanying test bearing and transmits the forces to the transmission test bearing set through the rotating shaft. The testing machine can simulate a bearing life test under a helicopter working condition.

Description

technical field [0001] The invention relates to the technical field of testing equipment, in particular to a high-speed testing machine for simulating and testing the life of a helicopter gearbox input gear shaft bearing group. Background technique [0002] In the field of aviation helicopters, bearings are crucial to flight safety. Bearing life is a key indicator for judging bearings. Commonly used bearing life tests can only judge the life of a single set of bearings. However, in actual use, two or more sets of bearings are often used together. It is difficult for conventional life testing machines to evaluate the actual operating status of bearings. [0003] Although there are some testing machines for testing bearing life in the prior art, such testing machines can only detect high-speed rotation of bearings or one-way force, etc., and cannot simulate the working conditions of helicopters well, so the obtained The test results cannot accurately represent the service lif...

Claims

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Application Information

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IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 王超韦治国谷广存王道品伍永康
Owner C&U CO LTD
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