CN104880331A - Crane wind load simulation test use method - Google Patents
Crane wind load simulation test use method Download PDFInfo
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- CN104880331A CN104880331A CN201510154306.7A CN201510154306A CN104880331A CN 104880331 A CN104880331 A CN 104880331A CN 201510154306 A CN201510154306 A CN 201510154306A CN 104880331 A CN104880331 A CN 104880331A
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Abstract
The invention relates to a crane wind load simulation test use method. An effective windward area of a crane is divided into a plurality of wind load areas. A windward simulation plate on a test trolley is divided in the same way into a plurality of simulation wind load areas. A traction chain is tightened perpendicular onto each simulation wind load area. A plurality of wind pressure sensors are used for acquiring wind power data of each wind load area according to weather conditions. The wind speed and pressure curves of each wind load area can be calculated respectively based on data acquired by wind speed sensors at the same time and each wind pressure sensor. The wind pressure curve data can be subjected to error adjustment based on the wind speed curve data to obtain the adjusted wind pressure curve corresponding to each wind load area. The average wind power value corresponding to the each wind load area per unit time is calculated according to each adjusted wind pressure curve, and the traction tightened on each traction chain can be adjusted according to the average wind power value. The data on crane brake, overturning, derailment and the like can be obtained from the simulation data, and an improvement scheme can be provided.
Description
Technical field
The present invention relates to a kind of wind resistance analog detection method, particularly relate to a kind of crane wind and carry simulation test using method.
Background technology
Flourish along with harbour handling forwarding business, large-scale port machine equipment plays more and more important effect in the modern production of harbour.But because its structure is tall and big, front face area is comparatively large, therefore is easy to when typhoon or sudden fitful wind occur the attack suffering wind-force, so the windproof work of the big machinery of sea port dock, has very important effect for production safety.Large-scale Logistics Equipment-the hoisting machinery worked in the open all requires to be provided with suitable wind resistance slippage prevention device, to avoid, when the fitful wind being subject to typhoon and burst attacks, causing great personal injury and property loss accident.The wind resistance skid resistance of main equipment derives from the performance of adopted wind resistance slippage prevention device.User is when adopting wind resistance slippage prevention device, except also correctly installing according to device class and specification reasonable selection, whether test wind resistance slippage prevention device performance reaches design objective seems particularly important, because the reliability of wind-proof device is the deciding factor of wind resistance safety.
In trestle crane and gantry crane, the anti-skidding and wind resistance Overthrow preventing device of wind resistance and simulation test become during rubber tyre gantry crane design uses the process had to pass through.
Therefore the hoisting machinery wind-proof device reliability software and hardware checking system of set of system, intellectuality, facilitation is researched and developed, the wind resistance data of outdoor crane are gathered for in-site modeling, pass through achievement in research, and then judge the wind loading rating of hoisting machinery, quantitatively check the wind loading rating of hoisting machinery whether qualified on the spot, determine the degree of reliability of wind-proof device, thus effectively contain the generation of the unfavorable accident of wind resistance, reduce economic loss, improve personal security, therefore this research project has huge Social benefit and economic benefit.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide the crane wind under a kind of more access expansion open-air atmosphere to carry simulation test using method.
For achieving the above object, the technical solution used in the present invention is: a kind of crane wind carries simulation test using method, and arrange test chassis in orbit and elastic traction device, described elastic traction device is provided with several conduction chains, it is characterized in that, comprising:
Separate wind section to amass: effective front face area of crane is divided into several wind sections and amasss, analog board windward on test chassis is partitioned into several simulation wind sections according to the same manner amass, on long-pending perpendicular to each simulation wind section, all tightens a conduction chain;
Calculate wind-force average: according to DIFFERENT METEOROLOGICAL CONDITIONS, adopt several wind pressure sensors to gather the long-pending wind-force data of each wind section; The wind speed curve and blast curve that each wind section amasss is calculated respectively according to the air velocity transducer of same time and the data of each wind pressure sensor collection; According to wind speed curve data, error transfer factor is carried out to blast curve data, show that each wind section amasss corresponding adjustment blast curve;
Setting tractive force: calculate each wind section in the unit interval according to each adjustment blast curve and amass the wind-force average of upper correspondence, the tractive force be tightened on conduction chain according to the adjustment of wind-force average.
In a preferred embodiment of the present invention, described front face area is the areas of each external parts of crane perpendicular to described crane place track.
In a preferred embodiment of the present invention, each described wind section amasss and all corresponding is provided with a wind pressure sensor, and the axis being parallel of mouth windward of described wind pressure sensor is in described track.
In a preferred embodiment of the present invention, described air velocity transducer can gather wind direction and the wind-force of atmospheric environment residing for crane, i.e. vector wind speed.
In a preferred embodiment of the present invention, calculate overall blast curve according to the adjustment blast opisometer that each wind section amasss, and provide the brake application curve of corresponding ground jack roller needs.
In a preferred embodiment of the present invention, draw according to overall blast curve the momentum that in a period of time, crane has on track axis direction.
In a preferred embodiment of the present invention, described elastic traction device is provided with tractor, described tractor is connected with some conduction chains, and described conduction chain one end is dismountable to be connected on described test chassis.
In a preferred embodiment of the present invention, described conduction chain is provided with pulling force sensor.
In a preferred embodiment of the present invention, described pulling force sensor can set specified value of thrust, during test, the actual tractive force numerical values recited of described tractor to described conduction chain fluctuates around described specified value of thrust all the time, and fluctuation area is less than 5% of test board car weight amount.
The invention solves the defect existed in background technology, the data that wind pressure sensor and air velocity transducer draw respectively are compared by the present invention, and revise wind pressure data under the data qualification of air velocity transducer, and such blast curve accuracy is higher; Effective front face area is separated into several wind sections to amass, separate model comparatively reasonable, simplify the data model of foundation, computing method are easier, and the digital simulation simultaneously drawn is more accurate; A conduction chain is tightened in the installation that each wind-force average drawn is all corresponding simultaneously, corresponding for wind-force effect can substantially accurately be applied on testing tool by this kind of modeling scheme, and obtain from simulated conditions crane braking, topple, the data such as derailing, and improvement project is proposed.
Embodiment
The present invention is further detailed explanation in conjunction with the embodiments now.
A kind of crane wind carries simulation test using method, and arrange test chassis in orbit and elastic traction device, elastic traction device is provided with several conduction chains, comprising:
Segmentation wind section amasss: effective front face area of crane is divided into several wind sections and amasss, analog board windward on test chassis is partitioned into several simulation wind sections according to the same manner amass, on long-pending perpendicular to each simulation wind section, all tightens a conduction chain; Being partitioned into effective front face area can reduced data model, simplify method of testing, crisscross wind-force data reduction is become the long-pending upper wind-force stress condition of a limited number of wind section, wind-force stress condition is transformed into the tractive force of conduction chain simultaneously, and then simulate above-mentioned wind force model and become possibility.
Calculate wind-force average: according to DIFFERENT METEOROLOGICAL CONDITIONS, adopt several wind pressure sensors to gather the long-pending wind-force data of each wind section; The wind speed curve and blast curve that each wind section amasss is calculated respectively according to the air velocity transducer of same time and the data of each wind pressure sensor collection; According to wind speed curve data, error transfer factor is carried out to blast curve data, show that each wind section amasss corresponding adjustment blast curve; Two groups of data compared and adjust correction, obtaining more accurate wind-force average, the precondition of simulation is more precisely reliable.
Setting tractive force: calculate each wind section in the unit interval according to each adjustment blast curve and amass the wind-force average of upper correspondence, according to the tractive force that the adjustment of wind-force average is tightened on conduction chain, after simplifying, the long-pending all corresponding wind-force average of each wind section, only need be undertaken tightening the wind effect that can produce simulation by the wind-force average size of conduction chain according to correspondence.
Front face area is the areas of each external parts of crane perpendicular to described crane place track, ensures effective wind-force direction.
Each described wind section amasss and all corresponding is provided with a wind pressure sensor, the axis being parallel of mouth windward of described wind pressure sensor is in described track, this makes it possible to the effective wind showing that vertical and wind section amasss, only have effective wind can produce Effective impulse in the axis of track.
Air velocity transducer can gather wind direction and the wind-force of atmospheric environment residing for crane, i.e. vector wind speed, this makes it possible to the wind speed and direction accurately knowing objective condition leeward, and wind speed curve just can as the comparison standard of blast curve and the standard of correction.
Overall blast curve is calculated according to the adjustment blast opisometer that each wind section amasss, and provide the brake application curve of corresponding ground jack roller needs, the wind-force momentum acted on crane of simulation finally needs to be undertaken eliminating and neutralizing by clamping device, and said process is and draws corresponding braking scheme by setting up the force data model of natural wind to crane.
Draw according to overall blast curve the momentum that in a period of time, crane has on track axis direction, momentum data are the background data finally needing to formulate braking scheme, and braking scheme needs to carry out formulating or adjusting according to momentum data.
Elastic traction device is provided with tractor, described tractor is connected with some conduction chains, and described conduction chain one end is dismountable to be connected on described test chassis, and above-mentioned hardware configuration effectively can be simulated wind-force and be acted on effect on crane.
Conduction chain is provided with pulling force sensor, and the wind conditions amassed according to each wind section like this can set different conduction chain inner tensions, tightens according to the conduction chain that the large young pathbreaker of inner tensions of setting is corresponding simultaneously.The elastic performance of conduction chain can provide the tractive force with buffering method, and this kind of power time is comparatively soft on test chassis, simultaneously can by the tractive force softening between tractor and test chassis.
Pulling force sensor can set specified value of thrust, and during test, the actual tractive force numerical values recited of tractor to conduction chain fluctuates around specified value of thrust all the time, and fluctuation area is less than 5% of test board car weight amount.
Conduction chain is elastic threads or spring, like this in dynamic traction process, the difference of the rated drawbar pull size that tractor can set according to actual tractive force and pulling force sensor adjusts haulage speed in time, to ensure that the difference size between actual tractive force and rated drawbar pull keeps within the specific limits.
Pulling force sensor can set specified value of thrust, and during test, the actual tractive force numerical values recited of described tractor to described conduction chain fluctuates around described specified value of thrust all the time, and fluctuation area is less than 5% of test board car weight amount.
Above according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, related personnel in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine technical scope according to right.
Claims (9)
1. crane wind carries a simulation test using method, and arrange test chassis in orbit and elastic traction device, described elastic traction device is provided with several conduction chains, it is characterized in that, comprising:
Segmentation wind section amasss: effective front face area of crane is divided into several wind sections and amasss, analog board windward on test chassis is partitioned into several simulation wind sections according to the same manner amass, on long-pending perpendicular to each simulation wind section, all tightens a conduction chain;
Calculate wind-force average: according to DIFFERENT METEOROLOGICAL CONDITIONS, adopt several wind pressure sensors to gather the long-pending wind-force data of each wind section; The wind speed curve and blast curve that each wind section amasss is calculated respectively according to the air velocity transducer of same time and the data of each wind pressure sensor collection; According to wind speed curve data, error transfer factor is carried out to blast curve data, show that each wind section amasss corresponding adjustment blast curve;
Setting tractive force: calculate each wind section in the unit interval according to each adjustment blast curve and amass the wind-force average of upper correspondence, the tractive force be tightened on conduction chain according to the adjustment of wind-force average.
2. crane wind according to claim 1 carries simulation test using method, it is characterized in that: described front face area is the areas of each external parts of crane perpendicular to described crane place track.
3. crane wind according to claim 2 carries simulation test using method, it is characterized in that: each described wind section amasss and all corresponding is provided with a wind pressure sensor, and the axis being parallel of mouth windward of described wind pressure sensor is in described track.
4. crane wind according to claim 1 carries simulation test using method, it is characterized in that: described air velocity transducer can gather wind direction and the wind-force of atmospheric environment residing for crane, i.e. vector wind speed.
5. crane wind according to claim 1 carries simulation test using method, it is characterized in that: calculate overall blast curve according to the adjustment blast opisometer that each wind section amasss, and provides the brake application curve of corresponding ground jack roller needs.
6. crane wind according to claim 5 carries simulation test using method, it is characterized in that: draw according to overall blast curve the momentum that in a period of time, crane has on track axis direction.
7. crane wind according to claim 1 carries simulation test using method, it is characterized in that: described elastic traction device is provided with tractor, described tractor is connected with some conduction chains, described conduction chain one end is dismountable to be connected on described test chassis.
8. crane wind according to claim 1 carries simulation test using method, it is characterized in that: described conduction chain is provided with pulling force sensor.
9. crane wind according to claim 8 carries simulation test using method, it is characterized in that: described pulling force sensor can set specified value of thrust, during test, the actual tractive force numerical values recited of described tractor to described conduction chain fluctuates around described specified value of thrust all the time, and fluctuation area is less than 5% of test board car weight amount.
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Cited By (4)
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| CN105527114A (en) * | 2015-12-16 | 2016-04-27 | 江苏省特种设备安全监督检验研究院 | Crane wind load measurement method |
| CN105716853A (en) * | 2016-04-01 | 2016-06-29 | 苏州聚晟太阳能科技股份有限公司 | Testing method for simulating wind load of photovoltaic support |
| CN109342007A (en) * | 2018-11-05 | 2019-02-15 | 广州双余智能科技有限公司 | A system and method for detecting wind resistance of a crane |
| CN110398311A (en) * | 2019-05-17 | 2019-11-01 | 常州机电职业技术学院 | Wind load calculation and verification method of wheel type movable equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105716853A (en) * | 2016-04-01 | 2016-06-29 | 苏州聚晟太阳能科技股份有限公司 | Testing method for simulating wind load of photovoltaic support |
| CN109342007A (en) * | 2018-11-05 | 2019-02-15 | 广州双余智能科技有限公司 | A system and method for detecting wind resistance of a crane |
| CN110398311A (en) * | 2019-05-17 | 2019-11-01 | 常州机电职业技术学院 | Wind load calculation and verification method of wheel type movable equipment |
| CN110398311B (en) * | 2019-05-17 | 2020-08-04 | 常州机电职业技术学院 | Wind load calculation and verification method for wheeled movable equipment |
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Application publication date: 20150902 |