Mechanical connecting fastener reliability test bed with bi-directional loading simulation function

A mechanical connection and load simulation technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve the problem of axial and radial dynamic loading of fasteners, and achieve control and adjustment methods. Simple and practical, simulates real working conditions, and has a wide range of effects

Active Publication Date: 2013-11-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the axial and radial dynamic loading of fasteners ca

Method used

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  • Mechanical connecting fastener reliability test bed with bi-directional loading simulation function
  • Mechanical connecting fastener reliability test bed with bi-directional loading simulation function
  • Mechanical connecting fastener reliability test bed with bi-directional loading simulation function

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Experimental program
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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the drawings:

[0044] Refer to figure 1 The reliability test bench for mechanical connection fasteners with a bidirectional load simulation function of the present invention is composed of a vibration power source, a dynamic loading and measuring mechanism and a workbench mechanism.

[0045] 1. Vibration power source

[0046] Refer to figure 1 with figure 2 The said vibration power source includes three-phase asynchronous motor, motor bracket, frequency converter, eccentric sleeve, flat key, connecting rod, deep groove ball bearing, screw (6), end cover, elastic retaining ring for shaft and tightening Composed of screws.

[0047] The motor bracket 3 is shaped like an "I" in cross section, with threaded holes on the upper plane and four U-shaped grooves on the lower plane for fixing on the ground iron 13; the eccentric sleeve 16 is a three-stage Stepped shaft, the axis of the first two steps of steppe...

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Abstract

The invention discloses a reliability test bed which can perform axial and radial dynamic loading for simulating actual work conditions on a mechanical connecting fastener. The mechanical connecting fastener reliability test bed is mainly composed of a vibration power source, a dynamic loading and measuring mechanism and a workbench mechanism, wherein the vibration power source is connected with a shaft of the dynamic loading and measuring mechanism through a connecting rod; the workbench mechanism is connected with a stud B of the dynamic loading and measuring mechanism; the vibration power source comprises a three-phase asynchronous motor, a motor holder, an eccentric bushing, the connecting rod and a deep groove ball bearing; the dynamic loading and measuring mechanism comprises the shaft, a linear bearing box-type unit, a linear bearing support, a tension and pressure sensor, the stud and an elastic unit. The mechanical connecting fastener reliability test bed achieves control over dynamic loading amplitude of the fastener by adjusting a stud mechanism, can detect the magnitude of the dynamic loading force in real time and simulate the actual work conditions and is concise and practical in control and adjustment method and wide in application range.

Description

Technical field [0001] The present invention relates to a reliability test device applied to the anti-loosening performance of mechanical connection fasteners. More specifically, the present invention relates to an axial and radial dynamics that can simulate real working conditions of mechanical connection fasteners. Loaded reliability test bench. Background technique [0002] Among all fastener connections, threaded connections have the functions of pre-tightening, connection, fastening, and sealing. Because of their detachability, low price, strong interchangeability, and standardization, they have been widely used. But precisely because of the detachable and interchangeable characteristics of threaded connections, in high-speed operation and strong vibration mechanical equipment, threaded connections often appear loose, loose, fatigue fracture and other failure modes, causing a lot of equipment damage, casualties, etc. And economic losses. With the development of mechanical ...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 李国发许凡何佳龙杨兆军张良马宇鹏刘畅段炜
Owner JILIN UNIV
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