Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method monitoring fatigue service life of crane beam

A crane beam and crane technology, applied in the field of inspection, can solve the problems of high construction difficulty and high cost, and achieve the effect of increasing construction difficulty and cost

Active Publication Date: 2015-11-18
中冶检测认证(上海)有限公司 +2
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the cost of monitoring is higher and the construction is more difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method monitoring fatigue service life of crane beam
  • Method monitoring fatigue service life of crane beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0022] The monitoring cost and construction difficulty increase with the increase of the number of crane girders and fatigue checking points, mainly because the monitoring must rely on the installation of stress-sensing sheets at each fatigue checking point of each crane girder. Thus, in one embodiment, this is avoided by eliminating the dependency of monitoring on the stress-sensitive sheet.

[0023] That is, this embodiment pre-establishes the functional relationship between the lifting weight, the running position and the stress amplitude for each fatigue checking point of each crane girder, because such a functional relationship can reflect that when the crane girder bears different load weights at different stress positions The stress amplitude for...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method monitoring fatigue service life of a crane beam; the method comprises the following steps: recording position information of the crane beam; setting position information of fatigue checking computation points for the crane beam; setting up a corresponding stress amplitude function for each the fatigue checking computation point of the crane beam, wherein the stress amplitude function uses hoisting weight and walking position as input variables; using the corresponding stress amplitude function to calculate a stress amplitude formed on the fatigue checking computation point by a hoisting object in each walking process of the crane beam; converting the stress amplitude of the fatigue checking computation point of the crane beam into a stress amplitude cycle index indicating fatigue life. The method can monitor the fatigue service life of the crane beam without needing a stress induction sheet, so monitoring cost and construction difficulty cannot be obviously improved by increasing number of the crane beams and fatigue checking computation points.

Description

technical field [0001] The invention relates to detection technology, in particular to a method for monitoring the fatigue service life of a crane beam. Background technique [0002] The number of cycles of the stress amplitude of the crane beam at its fatigue checking point is an important parameter to measure its fatigue life. In order to obtain such parameters, it is necessary to lay out stress induction sheets at the fatigue checking point of the crane girder to measure the stress amplitude, and obtain the number of stress amplitude cycles by converting the stress amplitude. [0003] However, in a real environment, there may be multiple crane girders that need to be monitored for fatigue life at the same time, and, in order to make the monitoring results more accurate, the number of fatigue checking points for each crane girder is usually more than one. In this way, the number of stress-sensing sheets required for monitoring will increase with the number of crane girder...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50B66C6/00
Inventor 吴玉峰姜迎秋郑建华金立赞杨珏冷超群齐常军唐纪祥宁涛
Owner 中冶检测认证(上海)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com