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Diagnosis and treatment methods of vibration faults in corridors of steel structures

A fault diagnosis and steel structure technology, applied in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as inaccuracy, vibration faults, and low stiffness, and achieve comprehensive considerations, high accuracy, and success rate high effect

Active Publication Date: 2020-11-06
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel structure corridor is light in weight and low in stiffness, and is prone to vibration failures under dynamic loads.
These vibrations not only affect comfort and damage human health, but also affect the safety of equipment and structures in severe cases
[0004] However, due to the complexity and diversity of vibration problems in steel structure corridors, technicians can only analyze specific problems, lack of scientific and quick diagnosis and treatment methods, and often draw wrong diagnostic conclusions due to incomplete and inaccurate analysis. Doesn't solve the vibration problem effectively

Method used

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  • Diagnosis and treatment methods of vibration faults in corridors of steel structures
  • Diagnosis and treatment methods of vibration faults in corridors of steel structures
  • Diagnosis and treatment methods of vibration faults in corridors of steel structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Corridor A: The structure of the corridor body is a solid-belly steel beam, the connection form of the steel beam and the support column is hinged, and the span of the steel beam is 12 meters. The vertical vibration is severe, and the maximum amplitude of vibration is 30.2mm / s.

[0084] According to steps 101 and 102, find out all the vibration sources, and determine the excitation frequency of the vibration sources. The unevenness of the material produces a periodic impact on the corridor. The distance between the bearing rollers of the corridor A is 1m, the diameter of the roller is 194mm, and the material running speed is 5.2m / s. The excitation frequency f caused by the unevenness of the material is e1 =5.2 / 1=5.2Hz; on the other hand, the rotation of the power equipment will generate simple harmonic excitation to the structure, and the corridor power equipment includes: motor (rotation frequency: f e2 =25Hz), reducer (rotation frequency: f e3 =1.59Hz), idler (rotat...

Embodiment 2

[0093] Corridor B: The structure of the corridor body is a solid-belt steel beam, and the connection form between the steel beam and the support column is rigid connection, and the span of the steel beam is 9 meters. The vertical vibration is severe, and the maximum amplitude of vibration is 25.6mm / s.

[0094] According to steps 101 and 102, find out all the vibration sources, and determine the excitation frequency of the vibration sources. The material unevenness produces periodic impact on the corridor. The distance between the bearing rollers in corridor B is 0.8m, the diameter of the rollers is 194mm, and the material running speed is 4.8m / s. The excitation frequency f caused by material unevenness is e1 =4.8 / 0.8=6.0Hz; on the other hand, the rotation of the power equipment will generate simple harmonic excitation to the structure. The power equipment in this corridor includes: motor (rotation frequency: f e2 =25Hz), reducer (rotation frequency: f e3 =1.59Hz), idler (rot...

Embodiment 3

[0103] Corridor C: The structure of the corridor body is a solid-belt steel beam, the connection form of the steel beam and the support column is rigid connection, and the span of the steel beam is 10 meters. The vertical vibration is severe, and the maximum amplitude of vibration is 34.5mm / s.

[0104] According to steps 101 and 102, find out all the vibration sources, and determine the excitation frequency of the vibration sources. The unevenness of the material produces a periodic impact on the corridor. The distance between the supporting rollers in the corridor C is 1.0m, the diameter of the roller is 180mm, and the material running speed is 4.0m / s. The excitation frequency f caused by the unevenness of the material is e1 =4.0 / 1.0=4.0Hz; on the other hand, the rotation of the power equipment will generate simple harmonic excitation to the structure. The power equipment in this corridor includes: motor (rotation frequency: f e2 =25Hz), reducer (rotation frequency: f e3 =1...

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Abstract

The invention discloses a method for diagnosing and treating a vibration failure of a steel structure corridor, which is suitable for vibration test analysis, failure diagnosis and treatment of a steel structure corridor in an industrial building, and belongs to the technical field of diagnosis and treatment of industrial buildings. The method comprises the following steps of: determining excitation frequency of all vibration sources; performing dynamic characteristics and dynamic response test; investigating and inspecting current status of a corridor structure and a device; comprehensively and systematically checking and diagnosing the vibration failure based on three aspects of vibration excitation-structural characteristics-dynamic response and classifying the vibration failure of thesteel structure corridor into three categories; and proposing seven kinds of diagnosis and treatment plans according to a different combination of the failures. The biggest advantages of the method lie in comprehensive consideration factors, high correct rate of failure diagnosis, and high success rate of failure treatment. The method also has the advantages of simple, systematic, convenient and cost-effective, etc., and can solve the vibration failure of the steel structure corridor quickly, accurately and effectively.

Description

technical field [0001] The invention relates to a vibration fault diagnosis and treatment method of a steel structure corridor, which is suitable for the vibration fault analysis, diagnosis and treatment of a steel structure corridor in an industrial building structure, and belongs to the technical field of industrial building diagnosis and treatment. Background technique [0002] The steel structure corridor undertakes the function of material transportation, and is an important structure in the production enterprises of electric power, coal, metallurgy, petrochemical and so on. [0003] In recent years, the competition among industrial and mining enterprises has become increasingly fierce. my country's belt conveyors are developing in the direction of long distance, high belt speed, large capacity, and high power. The pace of expansion and transformation is accelerating, and the requirements for construction speed are getting higher and higher. The steel structure is widely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 韩腾飞赵立勇李晓东席向东李永录伍云天邱金凯陈浩易桂香段威阳徐刚刘增富路明浩李军王宇尘
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP