Entire load spectrum compiling method for bridge type crane based on clustering analysis

A cluster analysis and crane technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of unsolved collection data classification processing, no load spectrum, etc.

Inactive Publication Date: 2015-07-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in these two methods are: only provide the collection method of load and load displacement, do not solve the problem of classification and processing of collected data, and do not involve the method of using data to compile load spectrum

Method used

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  • Entire load spectrum compiling method for bridge type crane based on clustering analysis
  • Entire load spectrum compiling method for bridge type crane based on clustering analysis
  • Entire load spectrum compiling method for bridge type crane based on clustering analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] According to the load classification method described in the above step B, the following specific methods are obtained:

[0090] 1) extract the crane load statistical data, the load data set in the present embodiment is:

[0091] P={100,110,118,120,121,132}

[0092] 2) According to the definition formula (1) of the distance between the loads of the crane, the distance matrix D of the load is established (0) :

[0093] D ( 0 ) = 0 10 18 20 21 32 10 0 8 10 11 ...

Embodiment 2

[0098] According to the load-displacement classification method described in the above step C, the following specific methods are obtained:

[0099] 1) In this embodiment, the load is 300-350 tons, and the load displacement set is X={[21,25], [22,35], [24,30], [23,29], [26,37] , [23,38]}, the load-displacement midpoint set is expressed as X={23, 28.5, 27, 26, 31.5, 30.5};

[0100] 2) Carry out cluster analysis to load-displacement midpoint, until all load-displacement finishes clustering, the cluster analysis figure of load-displacement in the present embodiment is as follows image 3 shown.

Embodiment 3

[0102] According to the complete machine load spectrum method described in above-mentioned step D, obtain the specific load spectrum of the complete machine of following bridge class crane:

[0103] 1) Assume that the statistics of the load and load displacement data are obtained, the lifting capacity is 0-P (tons), the load obeys the normal distribution, and the load displacement is in [X k1 ,X k2 ] range, k∈n. See Table 1 for the lifting information of bridge cranes, and the data in Table 1 are not specifically listed.

[0104] Table 1 Lifting information table of bridge type crane

[0105] serial number

load

load displacement

Midpoint of load displacement

1

P 1

[X 11 、X 12 ]

(X 11 +X 12 ) / 2

2

P 2

[X 21 、X 22 ]

(X 21 +X 22 ) / 2

…

…

…

…

n

P n

[X n1 、X n2 ]

(X n1 +X n2 ) / 2

[0106] The load and displacement in table 1 are divided into i class acc...

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Abstract

The invention discloses an entire load spectrum compiling method for a bridge type crane based on clustering analysis. The entire load spectrum compiling method specifically comprises the following steps: selecting a hoisting load and a load displacement of the bridge type crane as input parameters; then classifying the load by statistical data according to a clustering analysis method; classifying the load displacement by the statistical data according to the clustering analysis method; finally statistically calculating the life span of each stage of load in the load displacement range according to the classification results of the load and the load displacement, and compiling a load spectrum of the entire bridge type crane. The load spectrum compiled by the clustering method is higher in applicability. The method is simple, feasible and applicable; a reliable basis is supplied to estimation of the service life of the crane.

Description

technical field [0001] The present invention relates to the technical field of hoisting equipment, in particular to a method for compiling the load spectrum of bridge cranes based on cluster analysis, which is suitable for compiling the load spectrum of the main girder of general-purpose bridge cranes, and is useful for the life evaluation of this type of cranes. Provide evidence. Background technique [0002] Bridge cranes are widely used in ports and terminals, industrial and mining enterprises, railway transportation, farm forest areas, logistics turnover, iron and steel chemical industry and other departments and places, and are indispensable lifting equipment in human production activities. Statistics from relevant departments show that lifting equipment accidents account for about 15% of mechanical work-related accidents in my country. In order to ensure the safety of people's lives and property, the state has included hoisting machinery in the list of major technical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/30
Inventor 赵章焰李爱华夏文俊郭庆曹雄鹰郭小宁
Owner WUHAN UNIV OF TECH
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