CN103323282A - Tower crane safety assessment method and assessment equipment thereof - Google Patents
Tower crane safety assessment method and assessment equipment thereof Download PDFInfo
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- CN103323282A CN103323282A CN201310276709XA CN201310276709A CN103323282A CN 103323282 A CN103323282 A CN 103323282A CN 201310276709X A CN201310276709X A CN 201310276709XA CN 201310276709 A CN201310276709 A CN 201310276709A CN 103323282 A CN103323282 A CN 103323282A
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Abstract
The invention discloses a tower crane safety assessment method which comprises the following steps of (1) carrying out stress analysis on a stress structure part of a tower crane; (2) determining tower crane metal structure safety assessment detection points according to an analysis result of the step (1); (3) installing sensors on the safety assessment detection points; (4) collecting sensor information of each safety assessment detection point through a data collection unit; and (5) combined with the sensor data information, comprehensively calculating and assessing the safety of the tower crane. The invention discloses tower crane safety assessment equipment which comprises a detection unit which is electrically connected with the data collection unit. The data collection unit is electrically connected with a safety assessment unit. A problem that in the prior art a fault of the tower crane can not be found in advance to assess the safety condition of the tower crane and ensure the safe use of the tower crane is solved.
Description
Technical field
The invention belongs to tower crane safety assessment technology, relate in particular to a kind of tower crane safety evaluation method and assessment apparatus thereof.
Background technology
In a large amount of tower crane accidents is analyzed, the damage of metal construction is the main cause that causes tower machine collapse accident, the position of concentrating at stress may produce the sightless fatigue damage of naked eyes, because the emergentness of fatigue break often causes great accident; How to select stress centralized detecting point and effectively detected data, and to set up safety estimation system according to the data, method, flow process, the criterion that detect be a technical difficult problem.
Summary of the invention
The technical problem to be solved in the present invention: a kind of tower crane safety evaluation method and assessment apparatus thereof are provided, can not find the fault of tower crane in advance to solve prior art, with the safety case of assessment tower crane, ensure the problems such as safe handling of tower crane.
Technical solution of the present invention:
A kind of tower crane safety evaluation method, it comprises the steps:
Step 1, the force structure of tower crane is partly carried out force analysis;
Step 2, determine tower crane metal construction safety assessment check point according to step 1 analysis result;
Step 3, on the safety assessment check point sensor installation;
Step 4, gather sensor information on each safety assessment check point by data acquisition unit;
The security of step 5, combined sensor data message COMPREHENSIVE CALCULATING assessment tower crane.
The force structure of the described tower crane of step 1 partly refers to front tension bar, lifting beam top boom and front tension bar junction, tower cap lower end, balance arm back stay, balance arm and slewing tower junction, body of the tower bottom standard knot lower end, body of the tower the top attached wall and the standard knot junction of tower crane.
The described COMPREHENSIVE CALCULATING appraisal procedure of step 5 comprises the steps:
Steps A, item number, A is the critical defect project, is important defective item, and C is general defective item, and n1, n2, n3 are respectively the quantity of A, B, the corresponding qualified project of C.
Tower machine degree of safety average
(1)
Qualified, decision content is
, defective decision content is
,
,
Be respectively A, B, the corresponding nonconformance purpose of C quantity, degree of safety average R inserted in formula (2) and (3) judge;
Step B, formula (1) result of calculation is inserted
(2), then tested tower crane security is not up to standard in formula (2) establishment;
Step C, formula (1) result of calculation is inserted
(3), it is up to standard that formula (3) is set up then tower crane safety.
Detecting unit is electrically connected with data acquisition unit, and data acquisition unit is electrically connected with the safety assessment unit.
Beneficial effect of the present invention:
Adopt safety evaluation method of the present invention, can determine the crucial stress point of tower crane in advance by means such as stress analysis and Stress calculation, targetedly sensors such as stress section are installed on the crucial stress point then, obtain the stress level of crucial stress point, by drawing the safety case of tower crane after the analytical calculation, solve potential problem in advance, the present invention has the following advantages: the fault that can in time find tower crane; Safety detection result, mechanical analysis, judging basis and the software analysis combination of tower machine can be obtained comprehensive evaluation result; Solve prior art and can not find the fault of tower crane in advance, with the safety case of assessment tower crane, ensured the problems such as safe handling of tower crane.
Description of drawings:
Fig. 1 is apparatus for evaluating structural representation of the present invention.
Embodiment:
A kind of tower crane safety evaluation method, it comprises the steps:
Step 1, the force structure of tower crane is partly carried out force analysis; By force analysis and software simulation, determine tower machine metal construction safety assessment check point; Combining material mechanics, Elasticity, the crucial force part, stress of determining the important structure part are concentrated position, heavily stressed low fatigue lifetime district.
Step 2, determine tower crane metal construction safety assessment check point according to step 1 analysis result; Arrangement assessment check point mainly is front tension bar, lifting beam top boom and front tension bar junction, tower cap lower end, balance arm back stay, balance arm and slewing tower junction, body of the tower bottom standard knot lower end, body of the tower the top attached wall and the standard knot junction that the force structure of tower crane partly refers to tower crane.
Step 3, on the safety assessment check point sensor installation, mainly be to paste the ess-strain sheet, be subjected to force level to detect it;
Step 4, gather sensor information on each safety assessment check point by data acquisition unit,
The security of step 5, combined sensor data message COMPREHENSIVE CALCULATING assessment tower crane, in conjunction with the result of projects such as mechanical analysis, ess-strain detection, stress analysis, the safety case of comprehensive evaluation tower machine, and provide the comprehensive evaluation conclusion.
Described COMPREHENSIVE CALCULATING appraisal procedure comprises the steps:
Steps A, item number, A is the critical defect project, is important defective item, and C is general defective item, and n1, n2, n3 are respectively the quantity of A, B, the corresponding qualified project of C.
Tower machine degree of safety average
(1)
Qualified, decision content is
, defective decision content is
,
,
Be respectively A, B, the corresponding nonconformance purpose of C quantity, degree of safety average R inserted in formula (2) and (3) judge;
Step B, the result of calculation in the formula (1) is inserted
(2), then tested tower crane security is not up to standard in formula (2) establishment;
Step C, the result of calculation in the formula (1) is inserted
(3), it is up to standard that formula (3) is set up then tower crane safety.
A, B, C can resolve into a plurality of subitems in the following formula, also can add up according to the method described above to evaluate after comprehensive.If can reach the requirement of formula (2), then the tower machine can put into operation; Formula (2) requires and be formula (1) requirement if can not reach, and then this tower machine is answered time limit rectification, overhaul or scrapped.
Detecting unit is electrically connected with data acquisition unit, and data acquisition unit is electrically connected with the safety assessment unit.
Pass detecting unit and comprise stress strain gauge, carry out paster according to the key position of result on the tower machine of force analysis, detect and be subjected to force level, obtain the real-time stress data under the tower machine duty;
Data acquisition unit: in the uniaxial stress acquisition system, send into the safety assessment unit behind the real-time stress data under the collection tower machine duty for multichannel;
The safety assessment unit: store and import every tower machine testing parameter and show by liquid crystal display, draw and show tower machine safety case by the tower machine Safety Evaluation Software in the unit, and generate assessment report, related data and report can be derived by USB interface.
Claims (4)
1. tower crane safety evaluation method, it comprises the steps:
Step 1, the force structure of tower crane is partly carried out force analysis;
Step 2, determine tower crane metal construction safety assessment check point according to step 1 analysis result;
Step 3, on the safety assessment check point sensor installation;
Step 4, gather sensor information on each safety assessment check point by data acquisition unit;
The security of step 5, combined sensor data message COMPREHENSIVE CALCULATING assessment tower crane.
2. a kind of tower crane safety evaluation method according to claim 1 is characterized in that: front tension bar, lifting beam top boom and front tension bar junction, tower cap lower end, balance arm back stay, balance arm and slewing tower junction, body of the tower bottom standard knot lower end, the body of the tower that the force structure of the described tower crane of step 1 partly refers to tower crane be attached wall and standard knot junction topmost.
3. a kind of tower crane safety evaluation method according to claim 1, it is characterized in that: the described COMPREHENSIVE CALCULATING appraisal procedure of step 5 comprises the steps:
Steps A, item number, A is the critical defect project, is important defective item, and C is general defective item, and n1, n2, n3 are respectively the quantity of A, B, the corresponding qualified project of C,
Tower machine degree of safety average
(1)
Qualified, decision content is
, defective decision content is
,
,
Be respectively A, B, the corresponding nonconformance purpose of C quantity, degree of safety average R inserted in formula (2) and (3) judge;
Step B, the result of calculation in the formula (1) is inserted formula:
(2), then tested tower crane security is not up to standard in formula (2) establishment;
Step C, the result of calculation of formula (1) is inserted formula
(3), it is up to standard that formula (3) is set up then tower crane safety.
4. tower crane safety assessment equipment, it comprises detecting unit, it is characterized in that: detecting unit is electrically connected with data acquisition unit, and data acquisition unit is electrically connected with the safety assessment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310276709XA CN103323282A (en) | 2013-07-03 | 2013-07-03 | Tower crane safety assessment method and assessment equipment thereof |
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| CN201310276709XA CN103323282A (en) | 2013-07-03 | 2013-07-03 | Tower crane safety assessment method and assessment equipment thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935916A (en) * | 2014-04-25 | 2014-07-23 | 中联重科股份有限公司 | Anti-over-inclination early warning method and anti-over-inclination early warning device for tower crane |
| CN106815419A (en) * | 2017-01-03 | 2017-06-09 | 东南大学 | A kind of crane running status online evaluation method based on crack information prediction |
| CN110104568A (en) * | 2019-05-20 | 2019-08-09 | 山东中建众力设备租赁有限公司 | A kind of derrick crane installation self-test appraisal procedure |
| CN110704979A (en) * | 2019-09-30 | 2020-01-17 | 三一海洋重工有限公司 | Crane life evaluation method and device and electronic equipment |
| CN118062754A (en) * | 2024-04-24 | 2024-05-24 | 山东豪科机械设备有限公司 | Tower crane operation risk supervision early warning system based on data analysis |
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| EP1153877A1 (en) * | 2000-05-12 | 2001-11-14 | Potain | Method and device for the simulation of loads on lifting apparatus |
| CN103149042A (en) * | 2013-01-30 | 2013-06-12 | 大连理工大学（徐州）工程机械研究中心 | Safety evaluation decision making system of construction crane and safety evaluation decision making method thereof |
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| EP1153877A1 (en) * | 2000-05-12 | 2001-11-14 | Potain | Method and device for the simulation of loads on lifting apparatus |
| CN103149042A (en) * | 2013-01-30 | 2013-06-12 | 大连理工大学（徐州）工程机械研究中心 | Safety evaluation decision making system of construction crane and safety evaluation decision making method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935916A (en) * | 2014-04-25 | 2014-07-23 | 中联重科股份有限公司 | Anti-over-inclination early warning method and anti-over-inclination early warning device for tower crane |
| CN103935916B (en) * | 2014-04-25 | 2016-07-27 | 中联重科股份有限公司 | Anti-over-inclination early warning method and anti-over-inclination early warning device for tower crane |
| CN106815419A (en) * | 2017-01-03 | 2017-06-09 | 东南大学 | A kind of crane running status online evaluation method based on crack information prediction |
| CN106815419B (en) * | 2017-01-03 | 2020-01-24 | 东南大学 | Online evaluation method for crane running state based on crack information prediction |
| CN110104568A (en) * | 2019-05-20 | 2019-08-09 | 山东中建众力设备租赁有限公司 | A kind of derrick crane installation self-test appraisal procedure |
| CN110704979A (en) * | 2019-09-30 | 2020-01-17 | 三一海洋重工有限公司 | Crane life evaluation method and device and electronic equipment |
| CN118062754A (en) * | 2024-04-24 | 2024-05-24 | 山东豪科机械设备有限公司 | Tower crane operation risk supervision early warning system based on data analysis |
| CN118062754B (en) * | 2024-04-24 | 2024-08-02 | 山东豪科机械设备有限公司 | Tower crane operation risk supervision early warning system based on data analysis |
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Application publication date: 20130925 |