CN107122914A - A kind of crane safety method of evaluating performance and system - Google Patents
A kind of crane safety method of evaluating performance and system Download PDFInfo
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Abstract
The present invention proposes a kind of crane safety method of evaluating performance, establishes a set of complete crane safety evaluation system based on WEX5.The present invention is evaluated in terms of human factor, apparatus factor, environmental factor and management factors four, it is established that heavy-duty machine Safety Index System Assessment；Indexs at different levels to crane safety evaluation system carry out weight calculation；Indexs at different levels are quantified, indexs at different levels is evaluated and exports last crane safety state；Then by WEX5 softwares, design and develop the crane safety evaluation system of complete set；Including data collection module, data processing module, data transmission blocks；Relative to conventional security evaluation method, the present invention can optimize the flow of crane safety evaluation, improve the efficiency of crane safety evaluation；The step of crane safety evaluation can greatly be simplified by IT application in enterprises, and improve the flexibility of evaluation.
Description
Technical field
The invention belongs to safe evaluation method and system, particularly a kind of crane safety method of evaluating performance and system.
Background technology
With the fast development of hoisting machinery industry, the security performance of crane is increasingly valued by people how
The security performance that a crane can rapidly be evaluated also becomes new challenge.On the other hand, with the development of society, letter
Breathization also becomes modernization and the representative of comprehensive strength, and the significance level of information resources is also being lifted step by step, therefore, will rise
Heavy-duty machine safety assessment system is combined with informationization, just can realize the security performance for fast and accurately evaluating crane.
Crane is as jumbo, if its danger is also it will be apparent that it accident once occurs, will cause tight
The consequence of weight, the loss of such as casualties and property.Therefore, study and design the safety assessment system of crane for enterprise
For have great significance.By safety analysis, the existing safe condition of crane both can be quickly understood, again can be to existing
The equipment deposited, which is made, the corresponding conclusion such as scraps or repairs, and the replacing of crane is carried out at correct time point, also can be enterprise
It is cost-effective, increase the benefit；The process of evaluation is realized in the form of system so that the process of evaluation is simple, easy to operate, enters one
The brief management process of enterprise of step, improves the efficiency of management.Therefore, the safety assessment system of research crane is also tool
There is certain economic benefit.
In China's operated hoisting transport driving industry, apply at present most safety analyses with management method be safety checklist and
The qualitatively management method such as all-member equipment management, and the application of the quantitative management method such as failure tree analysis (FTA) is unsatisfactory, safety
Expert system frequency of use is relatively low.
On the one hand the reason for causing current this present situation be the essence for not understanding these analysis methods really, due to not having
More advanced evaluation method, so the conclusion of higher precision can not be obtained；On the other hand it is the high technology people of the theoretical level of shortcoming
Member, it is impossible to theory is applied in software aspects completely, the use scope of the evaluation system is limited.
The content of the invention
Technical problem solved by the invention is to provide a kind of crane safety method of evaluating performance and system, to solve
Efficient appraisement system is realized without existing management module, method and system of the invention have formulated the crane safety of complete set
Evaluation index, and this function is realized by IT application in enterprises software-WEX5, the safety evaluation stream of crane can be simplified
Journey, and improve its flexibility.
The technical solution for realizing the object of the invention is：
A kind of crane safety method of evaluating performance, comprises the following steps：
Step 1, the Safety Influence Factors to crane carry out Data Collection：
The crane safety accident of collection in recent years carries out statistical analysis, carries out accident genetic analysis；
Step 2, the security incident origin cause of formation is classified, it is established that heavy-duty machine security incident assessment indicator system：
The main cause of crane safety accident is classified, Index grading is carried out to classification, security incident is set up and evaluates body
System；
Step 3, the indexs at different levels to crane safety evaluation system carry out weight calculation：
Weight determination is carried out using analytic hierarchy process (AHP), the judgment matrix of indexs at different levels is constructed；Using extraction of root and returned
One change is handled, and obtains the initial weight of indexs at different levels；Carry out drawing last weight after consistency check again；
Step 4, indexs at different levels are quantified, evaluate indexs at different levels and simultaneously export last crane safety state：
For non-judgement type index, corresponding state value and limiting value are set up；For the Index Establishment lifting of non-judgement type
Machine safety evaluation index is classified, and the index of non-judgement type is divided into inverse indicators, direct index, osculant index；Judge index
It is defined as judging grade type index；Score index coefficient corresponding to each class Index Establishment；Calculate the safety evaluation of crane
Fraction.
A kind of crane safety Performance Appraisal System, including data collection module, data processing module, data send mould
Block；
Data collection module, parameter information and evaluation index information for collecting crane；
Data processing module, to the at different levels of the safety hoist Safety Index System Assessment set up to data collection module
Index carries out weight calculation；Crane safety evaluation index to foundation is classified, corresponding to each class Index Establishment to comment
Divide index coefficient；According to the weight and the Score index coefficient of safety evaluation index of index weights at different levels, calculating obtains safety and commented
Valency fraction；
Data transmission blocks, for the safety evaluation calculated result to be fed back into user terminal.
The present invention compared with prior art, its remarkable advantage：
(1) the invention provides a kind of crane safety method of evaluating performance, the crane safety of complete set has been formulated
Evaluation index, system has been carried out entirely in terms of human factor, apparatus factor, environmental factor and management factors four to crane
Face safe condition investigate, allow users to obtain a more reliable crane safety state of science.
(2) the security performance evaluation system realized by IT application in enterprises software-WEX5, can simplify the peace of crane
Full evaluation rubric, user need to only measure the respective value of crane safety evaluation index, just can obtain crane safety state.
Meanwhile, system can carry out the modification of crane safety evaluation index according to the concrete condition of user, improve the flexibility of system；
(3) when external environment changes, crane safety Performance Appraisal System easily can be increased accordingly
Plus, modification, the parameter information and evaluation index information for deleting crane, can be according to being modified the need for user, with general
Property.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the flow chart that safe evaluation method is realized to crane in the embodiment of the present invention.
Fig. 2 be the embodiment of the present invention in crane safety evaluation system structural representation.
Embodiment
In order that technical scheme is clearer, technical scheme is made into one below in conjunction with the accompanying drawings
Walk explanation；
Fig. 1 is the flow chart of the safe evaluation method of the present invention, a kind of crane safety method of evaluating performance of the invention
Specifically include following steps：
Step 1, the Safety Influence Factors to crane carry out Data Collection：
According to over nearly 4 to six years crane safety accident carry out statistical analysis, by State General Administration for Quality Supervision issue it is complete
The intelligence aids of state's special safety equipment situation obtain crane safety accident concrete condition, carry out accident genetic analysis.
Acquisition time can be adjusted as needed, it is not limited to the time in the present embodiment.
Step 2, the security incident origin cause of formation is classified, it is established that heavy-duty machine security incident assessment indicator system：By crane
The main cause classification of security incident, carries out Index grading to classification, sets up security incident appraisement system.
After step 2.1, the analysis accident origin cause of formation, the accident origin cause of formation is classified：
By analyzing above-mentioned data, the characteristic of crane safety accident, and the accident origin cause of formation, statistical analysis can be derived that
Afterwards, the main cause of crane safety accident is divided into four classes：Respectively human factor, apparatus factor, environmental factor and management
Factor；
Step 2.2, to accident origin cause of formation category carry out Index grading, set up security incident appraisement system：
It is first class index by above-mentioned four classes factor definition, two-level index is further divided into each first class index, and to two
Level index is further divided into three-level index, sets up security incident appraisement system；As shown in table 1.
The apparatus factor includes two-level index：The metallic magnetism factor of equipment, travelling mechanism factor, erecting device because
Element；The metallic magnetism factor includes three-level index：Corrosion degree, crackle fission situation, weld defect situation, make
Use the life-span；The travelling mechanism factor includes three-level index：Decelerator performance, brake performance, drive performance；The safety
Unit factor includes three-level index：The service life of erecting device, reliability, sensitivity.
The human factor includes two-level index：Operating personnel, administrative staff；Operating personnel's factor refers to including three-level
Mark：Installation personnel, mechanical work personnel；Administrative staff's factor includes plant maintenance personnel, commanding.
The environmental factor includes two-level index：Work safety distance factor, weather conditions, security warning factor；It is described
Safe distance factor includes three-level index：Fence coverage, crane and other equipment safe distance, upper limit line, Lower Limits line；
The weather conditions include three-level index：Wind load, temperature；The security warning factor includes three-level factor：Safety alarming sign
Know, specification is marked, label.
The management factors includes two-level index：Periodic maintenance factor, inspect periodically factor and file management factor；It is described
Periodic maintenance factor includes three-level index：Maintenance process, failure and accident report；It is described to inspect periodically including three-level factor：Inspection
Look into cycle, daily rectification situation；The file management factor includes three-level index：Work plan, equipment file management situation.
The crane safety evaluation index system of table 1
Step 3, the indexs at different levels to crane safety evaluation system carry out weight calculation：Weighed using analytic hierarchy process (AHP)
Determine again, construct the judgment matrix of indexs at different levels；Using extraction of root and it is normalized, obtains the initial power of indexs at different levels
Weight；Carry out drawing last weight after consistency check again.Specifically include following steps：
Step 3.1, the judgment matrix A=[a using analytic hierarchy process (AHP) construction indexs at different levelsij]；
Judgment matrix is represented for certain element in last layer time, evaluates each relevant element in the level relatively important
Property situation, i.e., the indexs at different levels in element correspondence Safety Index System Assessment in each level.Provided with n index, A1,
A2 ..., Ai..., Aj..., An }, aijRepresent in ratios of the index Ai relative to index Aj significance level, i.e. judgment matrix A
Element.It is preferred that aijTake 1,3,5,7,9 5 grade scales：1 represents that index Ai and index Aj is of equal importance；With numeral
Increase represents that significance levels of the index Ai compared with index Aj gradually increases.In in some embodiments, it can be entered according to actual conditions
Row grade scale is added or reduced.
By taking C1-C4 indexs as an example, the judgment matrix of structure is as follows：
Step 3.2, for two grades and three-level index Mode of Level Simple Sequence is carried out, using extraction of root and is normalized,
Obtain the initial weight of indexs at different levels：
(1) product of each row elements of judgment matrix A is first calculated：
Wherein, i represents the line number in judgment matrix A
J represents the columns in judgment matrix A
aijRepresent the element in judgment matrix A
miRepresent the product of each row elements of judgment matrix A
(2) the n th Roots seized the opportunity of each row element of judgment matrix are calculated respectively again, and obtain each after being normalized
The initial weight of level index：
Wherein,Represent miN th Roots；wiRepresent obtained initial weight.
Step 3.3, random consistency check is carried out to indexs at different levels, it is ensured that accuracy in logic：When random uniformity
When check consistency ratio meets index, then original judgment matrix is kept, initial weight is final weight；When random consistent
Sex ratio check consistency is unsatisfactory for index, then adjusts original judgment matrix, then recalculates initial weight, until meeting
Index.Consistency check process is as follows：
(1) according to the judgment matrix A of structure, Maximum characteristic root is calculated；The calculation formula of Maximum characteristic root is as follows：
In formula, W represents wiThe column matrix of composition.
(2) according to Maximum characteristic root, consistency ration C is calculatedR；Random consistency check is carried out to indexs at different levels；
The quantitative index of the inconsistent degree of judgment matrix is calculated first：
Random index is calculated again：
It should be noted that：Random index R can both be calculated by formula (6), can also pass through inquiry
Random index table is drawn.
(3) random consistency ration is finally calculated：
CR=C/R (7)
In formula, C is the quantitative index for weighing the inconsistent degree of judgment matrix；λmaxFor the maximum feature of n rank judgment matrixs
Value；As C=0, judgment matrix is consistent；R represents random index；Represent the maximum feature of n ranks judgment matrix
The average value of value.
As random consistency ration CR=C/R<When 0.1, the inconsistency within the acceptable range, if not in this model
Enclose, then must adjust the judgment matrix, re-start consistency check, then recalculate initial weight, until meeting index.
In the present embodiment, equally by taking C1-C4 indexs as an example；The product of each row element of C1-C4 indexs is calculated first
m1=1 × 3 × 5 × 1=15
m2=1/3 × 1 × 2 × 1/4=1/6
m3=1/5 × 1/2 × 1 × 1/2=1/20
m4=1 × 4 × 2 × 1=8
Calculate 4 th Roots respectively again and obtained after being normalized：
Random consistency check is carried out to indexs at different levels：
First calculate (AW):
Maximum characteristic root calculating is carried out further according to formula (4)：
Draw according to uniformity formula and (look into random index table and show that 4 rank coincident indicator R are 0.89)：
The judgment matrix shows the confusion of weight distribution in logic do not occur, has also drawn table by consistency check
Face extent of corrosion C1, crackle deformation situation C2, weld defect situation C3 and service life C4 this four indices are relative to metal
Mechanism B1 weight is (0.413,0.134,0.100,0.353).According to the method described above successively to crane safety evaluation index
Weight determination is carried out, the result finally drawn is as shown in table 1.
Step 4, indexs at different levels are quantified, evaluate indexs at different levels and simultaneously export last crane safety state：For
Non- judgement type index, sets up corresponding state value and limiting value；Refer to for the Index Establishment crane safety evaluation of non-judgement type
Mark is classified, and the index of non-judgement type is divided into inverse indicators, direct index, osculant index；Judge index is defined as judgement etc.
Level type index；Score index coefficient corresponding to each class Index Establishment；Calculate the safety evaluation fraction of crane.
Specifically include following steps：
Step 4.1, foundation《Safety rules for lifting appliances》And corresponding crane safety evaluation theoretical research, sentence for non-
Disconnected type index, sets up corresponding state value and limiting value, as shown in table 2：
The judgment criteria table of table 2
Step 4.2, according to judgment criteria indicator to judgement type and foundation《Steel weld seam manual ultrasonic method of detection and spy
Hinder result classification》、《Crane supervision and inspection code》、《Safety rules for lifting appliances》For the Index Establishment lifting of non-judgement type
Machine safety evaluation index is classified, and the index of non-judgement type is divided into inverse indicators, direct index, osculant index；Judge index
It is defined as judging grade type index；
It should be noted that the classification of non-judgement type index here is the state value and crane safety shape according to index
The relation of state is carried out.Such as surface corrosion degree C1, its state value is corrosion penetration and thickness of slab ratio, with the increasing of state value
Plus, crane safety state is poorer, therefore its pointer type is inverse indicators.The quantification of targets type list finally the set up such as institute of table 3
Show：
The quantification of targets type list of table 3
Step 4.3, to the corresponding Score index coefficient of each class Index Establishment.
(1) non-judgement type index:
For direct index, its Score index coefficient is：
For inverse indicators, its Score index coefficient is：
For osculant index, its Score index coefficient is：
In formula, the index sequence number in i ' expression judging quota tables
xi′Represent the measured value of the i-th ' individual index
x0Represent the limiting value of the i-th ' individual index
ki′Represent the Score index coefficient of the i-th ' individual index
(2) for judgement type index, quantified according to national relevant regulations and set up Score index, and determine that scoring refers to
Mark coefficient.
Weld defect situation C3：According to according to《Steel weld seam manual ultrasonic method of detection and result of detection classification》Regulation,
Detailed grade separation has been carried out to the defect level of weld seam.If last be chosen as I grade, Score index coefficient is 0.9；If being chosen as
II grade, then Score index coefficient is 0.7 point；If being chosen as III grade, Score index coefficient is 0.6 point；If being chosen as IV grade, score
Index coefficient is 0.3 point.Specific scoring coefficient can be adjusted as needed, and the scoring for being not limited to the present embodiment offer refers to
Mark coefficient.
Reliability C9：According to《Crane supervision and inspection code》, crane limiter is tested, passes through running trolley
(or cart) runs to the extreme position of track one end, acts the range limiter at this end, and now total A.C. contactor disconnects；
After restarting, the extreme position of running trolley (or cart) to the other end is the range limiter action of the other end, total exchange
Contactor disconnects；From the experiment of this process, the range limiter at dolly (or cart) two ends can effectively cut off electrical source of power, can
It is determined as reliable.If two ends range limiter can effectively cut off electrical source of power, Score index coefficient is 1 point, remaining situation
Then evaluation index coefficient is 0 point.
Installation personnel C11, mechanical work personnel C12, plant maintenance personnel C13, commanding C14：According to《Hoisting machinery
Safety code》Personnel's basic demand is judged.
Safety alarming and identifying C21, specification mark C22, label C23：According to《Safety rules for lifting appliances》Hoisting machinery
Mark, label, the basic demand of safety sign are judged.
Maintenance process C24：According to《Safety rules for lifting appliances》Maintenance process is judged.
Failure and accident report C25：According to《Safety rules for lifting appliances》Failure and accident report are judged.
Current check C27：According to《Safety rules for lifting appliances》Current check flow is judged.
Work plan C28：According to《Safety rules for lifting appliances》Work plan part is judged.
Equipment files C29：According to《Safety rules for lifting appliances》Equipment files requirement is judged.
For These parameters (in addition to weld defect situation C3, reliability C9), its Score index is：
In formula, i " represents the index sequence number in judgement type index
N represents i-th, and " individual index meets defined bar number
n0Represent the i-th " regulation total number of individual index
Step 4.4, the safety evaluation fraction for calculating crane.
According to the data of the crane safety state index collected, the Score index coefficient of correspondence index is obtained；With reference to
The crane evaluation criterion weight that analytic hierarchy process (AHP) is drawn, just can obtain last crane safety evaluation fraction；Its safety
Evaluation score Gi(i.e. crane safety state value) is：
Gi″′=Ai″′×Bi″′×Ci″′×ki″′×100 (12)
In formula, i " ' represents the index sequence number in crane safety evaluation index system
Ai″′Represent the first class index weight in crane safety evaluation index system
Bi″′Represent the two-level index weight in crane safety evaluation index system
Ci″′Represent the three-level index weights in crane safety evaluation index system
ki″′Represent the Score index coefficient of crane safety evaluation index.
Fig. 2 shows the structural representation of the crane safety evaluation system in present example, a kind of base of the invention
The crane safety Performance Appraisal System realized in WEX5, including data collection module 201, data processing module 202, data hair
Send module 203；
Data collection module 201, parameter information and evaluation index information for collecting crane.Evaluation index is really
Surely it is by carrying out data analysis to crane safety influence factor, the accident origin cause of formation being classified, it is established that heavy-duty machine is commented safely
Valency index system；For crane safety evaluation index, corresponding text box is set up, is easy to the number of user's input correspondence index
According to.The collection of parameter information be in order to determine the essential information of crane, including No. ID of crane, starting moment type, rise
The state (evaluated or do not evaluated) of the job site of heavy-duty machine and the date evaluated and evaluation.The safety of crane
Accident evaluation system and assorting process have been handed in above method step, and here is omitted.
Wherein data collection module 201 includes parameter information collector unit and evaluation index information collection unit：
Parameter information collector unit：Parameter information for collecting crane, parameter information refers to the basic of crane
Information, including No. ID of crane, starting moment type, the job site of crane and the date evaluated and comment
The state (evaluated or do not evaluated) of valency.The uniqueness that No. ID of crane ensure that crane, set by user and
Do not repeat；The evaluation date is automatically generated by crane safety evaluation system；Evaluation state is the safety evaluation state by crane
To determine, if the measured value for not inputting whole evaluation indexes draws last crane safety fraction, show and do not evaluate；
If having drawn last security score, show and evaluated.
Evaluation index information collection unit：For the specific measured value for the evaluation index for collecting crane.
Data processing module 202, to the safety hoist Safety Index System Assessment set up to data collection module 201
Indexs at different levels carry out weight calculation；Crane safety evaluation index to foundation is classified, to each class Index Establishment pair
The Score index coefficient answered；According to the weight and the Score index coefficient of safety evaluation index of index weights at different levels, calculating is obtained
Safety evaluation fraction.
Wherein data processing module 202 is included with lower unit：
Weight calculation unit：To the safety hoist Safety Index System Assessment set up to data collection module 201
Indexs at different levels carry out weight calculation, and last index power just can be obtained after the corresponding judgment matrix information of input pointer
Weight.If the initial weight of index meets the standard of consistency check, the final weight of index, i.e. initial weight are shown；If referring to
Target initial weight does not meet the standard of consistency check, then shows error and return to judgment matrix information and be easy to user to enter
Row modification.
Score index coefficient calculation unit：Crane safety evaluation index to foundation is classified, to each class index
Set up corresponding Score index coefficient；Corresponding Score index coefficient is selected according to the different type of index, and shown finally
Score index coefficient value.
Safe condition computing unit：According to the weight and the Score index coefficient of safety evaluation index of index weights at different levels,
Calculating obtains safety evaluation fraction；The data of the data of weight calculation unit and Score index coefficient calculation unit are counted
Calculate, obtain final crane safety state value.
The calculating process of above-mentioned each unit has stated that here is omitted in method and step.
Data transmission blocks 203, for the safety evaluation calculated result to be fed back into user terminal.
It should be noted that the crane safety evaluation system also includes：
Information storage module 204, the various information storage of correspondence crane, and pin are carried out for user at related interface
To whether evaluating the display of carry out state, the collection facilitated consultation with information.
Information inquiry module 205, the information of saved crane is checked for user in main interface, can also commented
The weight coefficient of correspondence index is checked during valency.
Information setup module 206, according to different if user and keeper：For keeper, if the evaluation system
The index of system needs to change either weight setting and needs to change, and can be carried out by this module；And be directed to user, then mainly
It is the change of the crane safety evaluation indicator measurements for crane.
System management module 207, is logged in for user by the identification of account and password, and user can select " to step on
Record " or " registration " enter system, and keeper can then change the factor of evaluation and corresponding weight of crane after logging in.
To sum up, with reference to the actual conditions of crane, the safe condition of crane can be reflected.So as to maintain easily personnel
Safeguarded accordingly according to safe condition, it is ensured that the security of crane work.
Claims (10)
1. a kind of crane safety method of evaluating performance, it is characterised in that comprise the following steps：
Step 1, the Safety Influence Factors to crane carry out Data Collection：
The crane safety accident of collection in recent years carries out statistical analysis, carries out accident genetic analysis；
Step 2, the security incident origin cause of formation is classified, it is established that heavy-duty machine security incident assessment indicator system：
The main cause of crane safety accident is classified, Index grading is carried out to classification, security incident appraisement system is set up；
Step 3, the indexs at different levels to crane safety evaluation system carry out weight calculation：
Weight determination is carried out using analytic hierarchy process (AHP), the judgment matrix of indexs at different levels is constructed；Using extraction of root and it is normalized
Processing, obtains the initial weight of indexs at different levels；Carry out drawing last weight after consistency check again；
Step 4, indexs at different levels are quantified, evaluate indexs at different levels and simultaneously export last crane safety state：
For non-judgement type index, corresponding state value and limiting value are set up；For the Index Establishment crane peace of non-judgement type
Full evaluation index is classified, and the index of non-judgement type is divided into inverse indicators, direct index, osculant index；Judge index is defined
To judge grade type index；Score index coefficient corresponding to each class Index Establishment；Calculate the safety evaluation fraction of crane.
2. crane safety method of evaluating performance as claimed in claim 1, it is characterised in that step 2 is to the security incident origin cause of formation
Classified, it is established that heavy-duty machine security incident assessment indicator system, specifically include following steps：
After step 2.1, the analysis accident origin cause of formation, the accident origin cause of formation is classified；
Step 2.2, to accident origin cause of formation category carry out Index grading, set up security incident appraisement system：By the thing of above-mentioned classification
Therefore the origin cause of formation is divided into indexs at different levels, security incident appraisement system is set up.
3. crane safety method of evaluating performance as claimed in claim 1, it is characterised in that step 3 is commented crane safety
The indexs at different levels of valency system carry out weight calculation, specifically include following steps：
Step 3.1, the judgment matrix A=[a using analytic hierarchy process (AHP) construction indexs at different levelsij]；
Provided with n index, { A1, A2 ..., Ai..., Aj..., An }, aijRepresent significance levels of the index Ai relative to index Aj
Ratio, i.e. element in judgment matrix A；
Step 3.2, for two grades and three-level index Mode of Level Simple Sequence is carried out, using extraction of root and be normalized, obtained
The initial weight of indexs at different levels；
Step 3.3, random consistency check is carried out to indexs at different levels, it is ensured that accuracy in logic：When random consistency check
When consistency ration meets index, then original judgment matrix is kept, initial weight is final weight；When random uniformity ratio
It is then to adjust original judgment matrix that example check consistency, which is unsatisfactory for index, then recalculates initial weight, is referred to until meeting
Mark.
4. crane safety method of evaluating performance as claimed in claim 3, it is characterised in that step 3.2 obtains indexs at different levels
Initial weight, specifically include procedure below：
(1) product of each row elements of judgment matrix A is first calculated：
Wherein, i represents the line number in judgment matrix A
J represents the columns in judgment matrix A
aijRepresent the element in judgment matrix A
miRepresent the product of each row elements of judgment matrix A
(2) the n th Roots seized the opportunity of each row element of judgment matrix are calculated respectively again, and obtain fingers at different levels after being normalized
Target initial weight：
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<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<mover>
<msub>
<mi>w</mi>
<mi>j</mi>
</msub>
<mo>&OverBar;</mo>
</mover>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein,Represent miN th Roots；wiRepresent obtained initial weight.
5. crane safety method of evaluating performance as claimed in claim 3, it is characterised in that step 3.3 consistency check
Journey is as follows：
(1) according to the judgment matrix A of structure, Maximum characteristic root is calculated；The calculation formula of Maximum characteristic root is as follows：
<mrow>
<msub>
<mi>&lambda;</mi>
<mrow>
<mi>m</mi>
<mi>a</mi>
<mi>x</mi>
</mrow>
</msub>
<mo>=</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<mfrac>
<mrow>
<mo>(</mo>
<mi>A</mi>
<mi>W</mi>
<mo>)</mo>
</mrow>
<mrow>
<mi>n</mi>
<mi>W</mi>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>4</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula, W represents wiThe column matrix of composition.
(2) according to Maximum characteristic root, consistency ration C is calculatedR；Random consistency check is carried out to indexs at different levels；
The quantitative index of the inconsistent degree of judgment matrix is calculated first：
<mrow>
<mi>C</mi>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>&lambda;</mi>
<mrow>
<mi>m</mi>
<mi>a</mi>
<mi>x</mi>
</mrow>
</msub>
<mo>-</mo>
<mi>n</mi>
</mrow>
<mrow>
<mi>n</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
Random index is calculated again：
<mrow>
<mi>R</mi>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mover>
<mi>&lambda;</mi>
<mo>&OverBar;</mo>
</mover>
<mrow>
<mi>m</mi>
<mi>a</mi>
<mi>x</mi>
</mrow>
</msub>
<mo>-</mo>
<mi>n</mi>
</mrow>
<mrow>
<mi>n</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
It should be noted that：Random index R can both be calculated by formula (6), can also be random by inquiry
Coincident indicator table is drawn；
(3) random consistency ration is finally calculated：
CR=C/R (7)
In formula, C is the quantitative index for weighing the inconsistent degree of judgment matrix；λmaxFor the eigenvalue of maximum of n rank judgment matrixs；Work as C
When=0, judgment matrix is consistent；R represents random index；Represent the flat of n rank judgment matrix eigenvalue of maximum
Average；
As random consistency ration CR=C/R<When 0.1, the inconsistency within the acceptable range, if not in this scope,
The judgment matrix must be adjusted, consistency check is re-started, then recalculates initial weight, until meeting index.
6. crane safety method of evaluating performance as claimed in claim 1, it is characterised in that step 4 calculates the peace of crane
Full evaluation score, specifically includes following steps：
Step 4.1, foundation《Safety rules for lifting appliances》And corresponding crane safety evaluation theoretical research, for non-judgement type
Index, sets up corresponding state value and limiting value；
Step 4.2, according to judgment criteria indicator to judgement type and foundation《Steel weld seam manual ultrasonic method of detection and flaw detection are tied
Fruit is classified》、《Crane supervision and inspection code》、《Safety rules for lifting appliances》For the Index Establishment crane peace of non-judgement type
Full evaluation index is classified, and the index of non-judgement type is divided into inverse indicators, direct index, osculant index；Judge index is defined
To judge grade type index；
Step 4.3, to the corresponding Score index coefficient of each class Index Establishment：
(1) non-judgement type index:
For direct index, its Score index coefficient is：
<mrow>
<msub>
<mi>k</mi>
<msup>
<mi>i</mi>
<mo>&prime;</mo>
</msup>
</msub>
<mo>=</mo>
<mfrac>
<msub>
<mi>x</mi>
<msup>
<mi>i</mi>
<mo>&prime;</mo>
</msup>
</msub>
<msub>
<mi>x</mi>
<mn>0</mn>
</msub>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>8</mn>
<mo>)</mo>
</mrow>
</mrow>
For inverse indicators, its Score index coefficient is：
<mrow>
<msub>
<mi>k</mi>
<msup>
<mi>i</mi>
<mo>&prime;</mo>
</msup>
</msub>
<mo>=</mo>
<mn>1</mn>
<mo>-</mo>
<mfrac>
<msub>
<mi>x</mi>
<msup>
<mi>i</mi>
<mo>&prime;</mo>
</msup>
</msub>
<msub>
<mi>x</mi>
<mn>0</mn>
</msub>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>9</mn>
<mo>)</mo>
</mrow>
</mrow>
For osculant index, its Score index coefficient is：
<mrow>
<msub>
<mi>k</mi>
<msup>
<mi>i</mi>
<mo>&prime;</mo>
</msup>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>|</mo>
<msub>
<mi>x</mi>
<msup>
<mi>i</mi>
<mo>&prime;</mo>
</msup>
</msub>
<mo>-</mo>
<msub>
<mi>x</mi>
<mn>0</mn>
</msub>
<mo>|</mo>
</mrow>
<msub>
<mi>x</mi>
<mn>0</mn>
</msub>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>10</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula, the index sequence number in i ' expression judging quota tables
xi′Represent the measured value of the i-th ' individual index
x0Represent the limiting value of the i-th ' individual index
ki′Represent the Score index coefficient of the i-th ' individual index
(2) for judgement type index, quantified according to national relevant regulations and set up Score index, and determine Score index system
Number；Its Score index is：
<mrow>
<msub>
<mi>k</mi>
<msup>
<mi>i</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msup>
</msub>
<mo>=</mo>
<mfrac>
<mi>n</mi>
<msub>
<mi>n</mi>
<mn>0</mn>
</msub>
</mfrac>
</mrow>
In formula, i " represents the index sequence number in judgement type index；
N represents i-th, and " individual index meets defined bar number；
n0Represent the i-th " regulation total number of individual index；
Step 4.4, the safety evaluation fraction for calculating crane：
According to the data of the crane safety state index collected, the Score index coefficient of correspondence index is obtained；Binding hierarchy
The crane evaluation criterion weight that analytic approach is drawn, just can obtain last crane safety evaluation fraction；Safety evaluation point
Number GiFor：
Gi″′=Ai″′×Bi″′×Ci″′×ki″′×100 (12)
In formula, i " ' represents the index sequence number in crane safety evaluation index system；
Ai″′Represent the first class index weight in crane safety evaluation index system；
Bi″′Represent the two-level index weight in crane safety evaluation index system；
Ci″′Represent the three-level index weights in crane safety evaluation index system；
ki″′Represent the Score index coefficient of crane safety evaluation index.
7. a kind of crane safety Performance Appraisal System, it is characterised in that including data collection module, data processing module, number
According to sending module；
Data collection module, parameter information and evaluation index information for collecting crane；
Data processing module, to the indexs at different levels for the safety hoist Safety Index System Assessment set up to data collection module
Carry out weight calculation；Crane safety evaluation index to foundation is classified, and scoring corresponding to each class Index Establishment refers to
Mark coefficient；According to the weight and the Score index coefficient of safety evaluation index of index weights at different levels, calculating obtains safety evaluation point
Number；
Data transmission blocks, for the safety evaluation calculated result to be fed back into user terminal.
8. a kind of crane safety Performance Appraisal System as claimed in claim 7, it is characterised in that also include：Information is stored
Module, the various information storage of correspondence crane is carried out for user at related interface, and for whether evaluating carry out state
Display, the collection facilitated consultation with information；
Information inquiry module, the information of saved crane is checked for user in main interface, can also evaluation mistake
The weight coefficient of correspondence index is checked in journey；
Information setup module, according to different if user and keeper：For keeper, if the index of the evaluation system
Needing to change either weight setting needs to change, and can be carried out by this module；And for user, then primarily directed to rising
The change of the crane safety evaluation indicator measurements of heavy-duty machine；
System management module, is logged in for user by the identification of account and password, user can select " to log in " or
" registration " enters system, and keeper can then change the factor of evaluation and corresponding weight of crane after logging in.
9. a kind of crane safety Performance Appraisal System as claimed in claim 7, it is characterised in that the data collection module
Including parameter information collector unit and evaluation index information collection unit：
Parameter information collector unit：Parameter information for collecting crane, parameter information refers to the essential information of crane,
No. ID including crane, starting moment type, the job site of crane and the date evaluated and the shape of evaluation
State；
Evaluation index information collection unit：For the specific measured value for the evaluation index for collecting crane.
10. a kind of crane safety Performance Appraisal System as claimed in claim 7, it is characterised in that the data processing mould
Block is included with lower unit：
Weight calculation unit：To the indexs at different levels for the safety hoist Safety Index System Assessment set up to data collection module
Weight calculation is carried out, last index weights just can be obtained after the corresponding judgment matrix information of input pointer；If index
Initial weight meet the standard of consistency check, then show the final weight of index, i.e. initial weight；If the initial power of index
The standard of consistency check is not met again, then shows error and return to judgment matrix information and be easy to user to modify；
Score index coefficient calculation unit：Crane safety evaluation index to foundation is classified, to each class Index Establishment
Corresponding Score index coefficient；Corresponding Score index coefficient is selected according to the different type of index, and shows final scoring
Index coefficient value；
Safe condition computing unit：According to the weight and the Score index coefficient of safety evaluation index of index weights at different levels, calculate
Obtain safety evaluation fraction；The data of the data of weight calculation unit and Score index coefficient calculation unit are calculated, obtained
Obtain crane safety state value finally.
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| CN108846607A (en) * | 2018-06-12 | 2018-11-20 | 北京北交智行信息技术有限公司 | Complex equipment maintenance decision optimization method based on Multi-Objective Decision Theory |
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| CN112053045A (en) * | 2020-08-21 | 2020-12-08 | 国网浙江省电力有限公司 | Power distribution project popularization index calculation method and system based on flexible switch |
| CN112950064A (en) * | 2021-03-29 | 2021-06-11 | 国网电力科学研究院有限公司 | Power grid security risk influence factor analysis method and device |
| CN112950064B (en) * | 2021-03-29 | 2022-10-04 | 国网电力科学研究院有限公司 | Power grid security risk influence factor analysis method and device |
| CN113361936A (en) * | 2021-06-09 | 2021-09-07 | 中联重科股份有限公司 | Reliability analysis method, device and system for crane |
| CN113361936B (en) * | 2021-06-09 | 2023-06-30 | 中联重科股份有限公司 | Reliability analysis method, device and system for crane |
| CN114399198A (en) * | 2022-01-14 | 2022-04-26 | 上海市特种设备监督检验技术研究院 | Classified safety evaluation system for large hoisting machinery |
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