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Self-lubricating joint bearing durability test method and test bench

A durability test, joint bearing technology, applied in the field of helicopters

Active Publication Date: 2016-01-27
CHINA HELICOPTER RES & DEV INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a durability test method for self-lubricating joint bearings to solve or at least alleviate at least one problem existing in the technical background

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  • Self-lubricating joint bearing durability test method and test bench
  • Self-lubricating joint bearing durability test method and test bench
  • Self-lubricating joint bearing durability test method and test bench

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Embodiment Construction

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention discloses a self-lubricating joint bearing durability test method and a test bench, and relates to the technical field of helicopters. The test method comprises the steps as follows: first, the initial radial clearance between an inner ring and an outer ring and the initial radial clearance between the inner ring and a guide cylinder are measured; then, the periodic change of loading force is simulated; and finally, the radial clearance between the inner ring and the outer ring and the radial clearance between the inner ring and the guide cylinder of a self-lubricating joint bearing after wear are measured. Support frames of the test bench are fixed to a working platform and used for supporting ropes. Three lugs are uniformly arranged on the circumference of an installation fixture. One end of each rope is connected with the corresponding lug of the installation fixture, and the other end is connected with the piston rod of one loading oil cylinder. The installation fixture sleeves a guide cylinder. A measured self-lubricating joint bearing is arranged between the installation fixture and the radial direction of the guide cylinder. Three booster cylinders are arranged in the axial direction of the installation fixture. The beneficial effect is that sliding wear test and rotating wear test of the bearing can be completed simultaneously through one piece of test equipment.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a durability test and a test stand for a self-lubricating joint bearing. Background technique [0002] Most of the existing self-lubricating joint bearings at home and abroad do not have a self-lubricating layer at the inner hole. The self-lubricating layer at the inner hole is exclusive to the large spherical hinge of the helicopter's automatic tilter, and the purpose is to adapt to the control of the helicopter's collective pitch. Therefore, domestic and foreign self-lubricating spherical plain bearing durability test benches generally only have the ability to assess the tilting wear of the test piece, not the ability to test the sliding wear, and the loading of the tilting wear test generally adopts the loading method in a fixed direction. The loading direction of the test piece cannot be changed according to the actual working conditions of the test piece. When the self-...

Claims

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Application Information

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IPC IPC(8): G01M13/04
Inventor 杨广勇覃海鹰金坤健邬文强张昊
Owner CHINA HELICOPTER RES & DEV INST
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