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Hoist spindle reliability analysis, calculation and evaluation method

A hoist and reliability technology is applied in the field of analysis, calculation and evaluation of the reliability of the hoist spindle, and can solve the problems that the discreteness of the material strength cannot be well considered, and the calculation of the fatigue strength of the hoist spindle is complicated.

Active Publication Date: 2016-08-24
NORTHEASTERN UNIV
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Problems solved by technology

Using the traditional safety factor method for reliability design cannot take into account the discrete nature of material strength; the calculation of the fuzzy reliability design model for the fatigue strength of the hoist main shaft established by Jin Minjie is relatively complicated

Method used

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  • Hoist spindle reliability analysis, calculation and evaluation method
  • Hoist spindle reliability analysis, calculation and evaluation method
  • Hoist spindle reliability analysis, calculation and evaluation method

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of 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 work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention Inside.

[0048] The method for analyzing, calculating and evaluating the reliability of the hoist main shaft of the present invention comprises the following steps:

[0049] 1 Simulation of web strain test results

[0050] Firstly, the stress on the web of the reel during a lifting process is obtained through strain detection. For the specific steps of attaching strain gauges and the acquisition me...

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Abstract

The invention discloses a hoist spindle reliability analysis, calculation and evaluation method. The method comprises the following steps: S1, strain parameters of the hoist during one hoisting process are detected; S2, cyclic principal stress and cyclic shear stress applied to a drum wheel disc are obtained through the strain parameters; S3, the joint force for a force node is analyzed, torques when the drum wheel disc acts on two load action points of the hoist spindle and a torque when a motor acts on the hoist spindle are analyzed; and S4, a spindle flexural torque diagram and a torque diagram for the hoist spindle are obtained, a distortion energy density criterion for a dangerous section strength formula: a square root of (sigma<2>+3tau<2>)<[sigma] serves as a basis for spindle reliability design, and reliability calculation and evaluation are carried out. According to the hoist spindle reliability analysis, calculation and evaluation method disclosed by the invention, a perturbation method is adopted for reliability design, uncertainty of the load is considered, a reliability index is easy to solve, and more practical value is provided for reliability analysis on the hoist spindle.

Description

technical field [0001] The invention relates to the technical field of reliability prediction of a main shaft of a hoist, in particular to an analysis, calculation and evaluation method for the reliability of a main shaft of a hoist. Background technique [0002] With the accelerated development of the manufacturing industry, the demand for various raw materials and energy is increasing, and the tasks undertaken by the friction mine hoist are also increasing. Therefore, the reliability of the hoist has attracted much attention. In the actual working process, the hoisting device of the kilometer deep well hoist often works for a long time. The main shaft of the hoist is mainly affected by its own weight and the gravity of the reel on the main shaft, the tension of the wire rope applied to the main shaft through the reel and the force of the motor. Torque to the main shaft, so the main shaft is prone to fatigue failure during the rotation process, so it is necessary to analyze...

Claims

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Application Information

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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 王新刚王宝艳陈小辉
Owner NORTHEASTERN UNIV
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