CN108584703B - Double girder overhead crane hoist and Main Girder Deflection on-line measurement system and its measurement method - Google Patents
Double girder overhead crane hoist and Main Girder Deflection on-line measurement system and its measurement method Download PDFInfo
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- CN108584703B CN108584703B CN201810789183.8A CN201810789183A CN108584703B CN 108584703 B CN108584703 B CN 108584703B CN 201810789183 A CN201810789183 A CN 201810789183A CN 108584703 B CN108584703 B CN 108584703B
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- girder
- crane
- force snesor
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- hoist
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention discloses a kind of double girder overhead crane hoist and Main Girder Deflection on-line measurement system and its measurement method, belongs to field of measuring technique.The measuring system hardware include equipped with the suspension hook group of washer type force snesor, the laser range sensor mounted in girder lower plate span centre position, cable drum, black iron, with vehicle control cabinet, wireless transmitter, wireless receiver, master controller, display, relay and cable power；Measuring system software includes wireless communication module, data acquisition and procession module, measurement control module.Washer type force snesor can directly measure real-time hoist, two range data of the crane zero load with crane girder lower plate when loading to ground black iron are measured using laser range sensor, it is wirelessly transmitted to ground controller by radiofrequency signal, then the corresponding Main Girder Deflection of real-time hoist is calculated by correlation formula.The present invention can measure the real-time hoist of crane and corresponding Main Girder Deflection simultaneously, and structure is simple and easy to implement, measurement accuracy is high and stablizes.
Description
Technical field:
The invention belongs to field of measuring technique, and in particular to a kind of double girder overhead crane hoist and Main Girder Deflection are surveyed online
Amount system and its measurement method.
Background technique:
For double girder overhead crane, hoist and body frame amount of deflection are two important technological parameters, and hoist index has reflected
The crane capacity of heavy-duty machine, for real-time hoist no more than specified hoist, body frame amount of deflection index reflects crane steel structure performance.It is main
For maximum defluxion when load bearing beam no more than Allowable deflection, Allowable deflection is related with crane classification group and girder span.
Currently, the common method of craning weight of same on-line measurement has: angle-style bearing block is replaced with bearing shell formula sensor, it is used
Force snesor quantity is more, wiring is more, and weighs and need to remove lifting mechanism weight；Sensing is installed on fixed pulley bracket
Device, structure is simple, but its fish back side carrying bridge type magnetic sensor needs nonstandard customization；Steel rail type sensor is directly serially connected in trolley
On running track position appropriate, sensor cost is high and need to pinpoint weighing.This patent is intended increasing a power in hook assembly
Washer type sensor sleeve is mounted between suspension hook bar portion nut pressing plate and thrust bearing by sensor, and advantage is that structure is simple, alleged
It is real-time lifted weight weight that weight, which need to only subtract the another part weight of suspension hook,.
The common measurement method of crane body frame amount of deflection is: suspension wire method, the level direct method of measurement, theodolite method etc., this
A little methods are affected by human factors, or are limited by place, and measurement trouble, measurement accuracy is low or cannot achieve, and can only be regular
Measurement, can not obtain body frame working condition in real time for a long time, cannot alarm in time for overload or precarious position, it is even more impossible to pre-
Estimate the variation tendency and security risk of girder.
Chinese patent " a kind of main beam of gantry crane amount of deflection on-line monitoring system and method " (application number
201510900821.5) it, using impulsive measurement device (not selecting precision distance measurement sensor), surveys and reflects dress at girder lower cover plate
The distance and deviation angle set, then amount of deflection is conversed, survey calculation process is complicated, and measurement accuracy leaves a question open.A kind of Chinese patent " measurement
The system of lower flexibility of main girder of crane " (application number 201020569894.3), laser measuring apparatus is put down on ground, is measured upwards
It to girder lower plate away from Main Girder Deflection is scaled, is actually unable in and obtains girder actural deflection, girder bottom can only be measured
Plate real time position and changing rule.A kind of Chinese patent " the deflection metrology of hoisting machinery safety monitoring system and crane's major girder
Method " (application number 201611036388.6), using communicating pipe method, measured at girder front leg strut respectively, girder middle position,
Liquid level at girder rear support leg, and then Main Girder Deflection value is obtained, three measurement positions have no idea to demarcate in the method.China
Patent " a kind of lower flexibility of main girder of crane laser detecting method and device " (application number 99101428.6), target is mounted on
End of main beam, laser are mounted on girder center, survey the two away from being scaled amount of deflection again, target and laser in the method
Also it has no idea to demarcate in position.
Summary of the invention:
Deficiency in view of the above technology, the present invention propose that a kind of double girder overhead crane hoist and Main Girder Deflection are surveyed online
Amount system and its measurement method, it is simple with structure, be easily achieved, speed is fast, measurement accuracy is high and stability is high and can exist in real time
Line monitoring is target.
A kind of double girder overhead crane hoist and Main Girder Deflection on-line measurement system disclosed in this invention, including Hardware Subdivision
Point and software section；The hardware components are as shown in Figure 1 and Figure 2, including ground black iron 1, the suspension hook equipped with washer type force snesor 14
Group 2, laser range sensor 3, L plate 4, screw group 5, cable drum 10, with vehicle control cabinet, wireless transmitter, wireless receiver,
Master controller, display, relay and cable power；The software section includes wireless communication module, data acquisition and procession
Module and measurement control module；The laser range sensor 3 and the washer type force snesor 14 pass through cable and institute respectively
It states and is connected with vehicle control cabinet, the communication cable with vehicle control cabinet is connected with the wireless transmitter, the wireless transmitter
Module connects the wireless receiver by wireless communication；The wireless receiver connects the main control by communication cable
Device, the display and the relay are connected by cable with the master controller；Described ground black iron 1 is embedded in 6 span centre of girder
On the ground of underface, the upper surface of described ground black iron 1 is in horizontality, and described ground black iron 1 is concordant with ground level；The L
Plate 4 is welded on the span centre position of 6 lower plate of girder；The laser range sensor 3 is fixed on the L by the screw group 5
On plate 4, the laser rays that the laser range sensor 3 issues downwards is perpendicular to ground level；As shown in figure 3, the washer type power
Sensor 14 is mounted on the top of the thrust bearing 12 in the suspension hook group 2, the washer type force snesor 14 and the thrust
Bearing 12 is concentric, the lower circle and 13 rigid connection of crossbeam of the thrust bearing 12；The suspension hook 11 passes through the crossbeam 13, thrust
The centre bore of bearing 12 and the washer type force snesor 14, the suspension hook 11 by nut pressing plate 15 and bolt group 16 with it is described
The upper circle of washer type force snesor 14 is linked；The cable drum 10 is fixed on trolley 9, the washer type force snesor 14
Cable be connected to by the cable drum 10 it is described with vehicle control cabinet.
Craning weight of same measuring principle is that as shown in Figure 2 and Figure 3, when crane hook 11 slings weight, washer type power is passed
Sensor 14 has force parameter G output, the real-time hoist W of crane are as follows:
W=G-W0 (1)
In formula: W0--- suspension hook pts wt.
The principle of crane girder amount of deflection on-line measurement is as shown in Figure 2, Figure 4 shows, to clean out the upper of ground black iron 1 first
Then the wheel 8 of unloaded crane is reached the surface of ground black iron 1 by surface with end carriage 7 and girder 6 and the trolley 9,
The laser rays for enabling laser range sensor 3 to launch vertically downward is mapped to the upper surface of ground black iron 1, starts ranging, obtains data
HQ, the reading of washer type force snesor 14 is W at this time0(there was only suspension hook weight at this time).Crane is driven away, weight is hung on, then
The surface that crane is reached to ground black iron 1 enables laser rays to be mapped to the upper surface of ground black iron 1, starts ranging and obtains data HG, this
When washer type force snesor 14 reading be G.
As shown in figure 4, set 0-0 line as on crane girder without trolley without flexure when girder go to the bottom Board position i.e. zero-bit
Line；Line A-A is only trolley self weight Q and girder bottom Board position when non-hoist object, the distance between it and 0-0 line are to only have
The amount of deflection f of girder when trolley is self-possessedQ；Line B-B is that girder is gone to the bottom Board position when having weight G on suspension hook, it between 0-0 line away from
From real-time amount of deflection f when hanging on weight for craneG, it is this measuring system one of major parameter to be measured.
By Fig. 4, have:
fG+HG=fQ+HQ (2)
Before the deformation of the loaded generation of girder is not up to plastically deformed, the downwarp occurred is flexible deformation, and girder is born
Load and its amount of deflection between there are linear relationships, i.e.,
Formula (3) are substituted into formula (2) to obtain:
When hoist reading is G, Main Girder Deflection are as follows:
In formula: G --- hoist；
Q --- trolley self weight is provided by crane manufacturer drawing；
W0--- suspension hook self weight；
HQ--- girder span centre only has laser ranging when trolley；
HG--- laser ranging when hoist is G；
According to above-mentioned measuring principle, the step of this measurement method are as follows:
(1) the cart wheel 8 of unloaded crane is reached into described ground black iron with end carriage 7 and girder 6 and the trolley 9
1 surface, the laser rays for enabling the laser range sensor 3 to launch vertically downward are mapped to the upper table of described ground black iron 1
Face；
(2) power transmission starts measuring system, and the laser range sensor 3 starts to measure, and must read is HQ, while the pad
Ring type force snesor 14 starts to measure, and must read W0；The reading HQAnd W0Numerical value is described in vehicle control cabinet by described wireless
Transmitter issues radiofrequency signal to the wireless receiver on ground, and then sends the master controller to；
(3) direction of travel by unloaded crane along cart wheel 8 drives away, and hangs on weight, then will be big described in the crane
Vehicle wheel 8 reaches the surface of described ground black iron 1 with end carriage 7 and girder 6 and the trolley 9, passes the laser ranging
The laser rays that sensor 3 is launched vertically downward can be mapped to the upper surface of described ground black iron 1, and the laser range sensor 3 starts
Measurement, must read is HG, while the washer type force snesor 14 starts to measure, and must read G；The reading HGPass through with G numerical value
It is described that radiofrequency signal is issued to the wireless receiver on ground by the wireless transmitter with vehicle control cabinet, and then send institute to
State master controller；
(4) formula W=G-W is pressed0Calculate the real-time hoist of crane；
(5) formula is pressedCalculate the real-time amount of deflection of girder 6 when hoist is G, Q in formula
For trolley self weight, is provided by the drawing of crane manufacturer, record and export result；
It (6), being capable of real-time hoist when any time measures crane loading weight according to above-mentioned steps (3)-(5)
And the real-time amount of deflection of corresponding crane girder, it alarms if hoist is overweight or amount of deflection is more than feasible value.
The invention has the advantages that the present invention can measure the real-time hoist of crane and corresponding Main Girder Deflection simultaneously, and
Real-time measuring data and calculated result are stored, conducive to the lifting amount of monitoring crane and the health status of crane girder
And development trend.Washer type force snesor is mounted in suspension hook group parts by the present invention, can directly be measured crane and be hung in real time
Weight；Laser range sensor is mounted on girder lower plate span centre position, measures crane zero load using laser range sensor
With two range data of crane girder lower plate when load to ground black iron, ground control is wirelessly transmitted to by radiofrequency signal
Device processed, then the corresponding Main Girder Deflection of real-time hoist is calculated by correlation formula.This method is simple with structure, is easily achieved, speed
Spend the technical characterstics such as fast, measurement accuracy height and stability height.
Detailed description of the invention:
Fig. 1 is double girder overhead crane hoist and Main Girder Deflection on-line measurement system schematic diagram of the invention；
Fig. 2 is measuring system mechanical structure schematic diagram of the invention；
Fig. 3 is suspension hook group mechanical structure schematic diagram of the invention；
Fig. 4 is measuring system middle girder deflection metrology schematic diagram of the invention.
In figure: 1: ground black iron；2: suspension hook group；3: laser range sensor；4:L plate；5: screw group；6: girder；7: end carriage；
8: cart wheel；9: trolley；10: cable drum；11: suspension hook；12: thrust bearing；13: crossbeam；14: washer type force snesor；
15: nut pressing plate；16: bolt group；17: pulley；18: suspension hook frame；19: pulley spindle.
Specific embodiment:
As shown in Figure 1, 2, 3, a kind of double girder overhead crane hoist and Main Girder Deflection on-line measurement system and its measurement side
Method, including hardware components and software section；The hardware components are mainly by ground black iron 1, hanging equipped with washer type force snesor 14
Hook group 2, laser range sensor 3, L plate 4 and screw group 5, cable drum 10, with vehicle control cabinet, wireless transmitter, wireless receiving
The composition such as device, master controller, display, relay and cable power；The software is mainly acquired by wireless communication module, data
With processing module, the measurement composition such as control module.
The application of measuring system is in the present embodiment: double girder overhead crane, and specification is 50T-22.5m, specified
50 tons of weight, 22.5 meters of girder span, 12 meters of lifting altitude, working level A5.Crane manufacturer drawing is looked into, trolley is certainly
Weight 18T.
Model Nai Teen K-2698, the range 600KN of washer type force snesor 14 used in this system case study on implementation,
Precision 0.5%；The model Germany SICK DL35-B15552 of laser range sensor 3, range 200-35000mm, resolution ratio
0.1mm, repeatable accuracy 0.5mm.
Be ready work first, as shown in Figure 2 and Figure 3, shown in black iron 1 be embedded in the ground immediately below 6 span centre of girder
On, upper surface is in horizontality, and concordant with ground level, the L plate 4 of the installation laser range sensor 3 is welded on master
The span centre position of 6 lower plate of beam, the laser range sensor 3 are fixed on L plate 4 by screw group 5, are needed when fixed anti-
The whole laser pose of polyphony, the laser rays for issuing laser range sensor 3 downwards is perpendicular to ground level, it may be assumed that vertical at two
The laser 3 is rotated in plane repeatedly, when laser institute's ranging can consider laser rays perpendicular to ground from when being minimum.It will
The washer type force snesor 14 is mounted on the top of the thrust bearing 12 in suspension hook group 2, and the two is concentric, thrust bearing 12
Lower circle and 13 rigid connection of crossbeam；By the suspension hook 11 in crossbeam 13, thrust bearing 12, washer type force snesor 14
Heart hole, and be linked with nut pressing plate 15 and bolt group 16 and the upper circle of washer type force snesor 14；The cable drum 10
It is fixed on monkey 9, the cable of washer type force snesor 14 is connected to by cable drum 10 with vehicle control cabinet.
The course of work of measuring system is as follows:
(1) the cart wheel 8 of unloaded crane is reached into ground black iron 1 with end carriage 7 and girder 6 and the trolley 9
Surface, the laser rays for enabling laser range sensor 3 to launch vertically downward are mapped to the upper surface of ground black iron 1；
(2) power transmission starts measuring system, and laser range sensor 3 starts to measure, and must read is HQFor 15342.0mm, together
When washer type force snesor 14 also start to measure, W must be read0For 3066N；The reading HQAnd W0Numerical value passes through with vehicle control cabinet
Radiofrequency signal is issued to the wireless receiver on ground by wireless transmitter, and then sends master controller to；
(3) direction of travel by unloaded crane along cart wheel 8 drives away, and hangs on weight, then by the cart of the crane
Wheel 8 with end carriage 7 and girder 6 and the trolley 9 reach ground black iron 1 surface, make laser range sensor 3 vertically to
Under the laser rays launched can be mapped to the upper surface of ground black iron 1, laser range sensor 3 starts to measure, and must read is HGFor
15323.6mm, while washer type force snesor 14 also starts to measure, must read G is 490355N；The reading HGIt is logical with G numerical value
It crosses and radiofrequency signal is issued to the wireless receiver on ground by wireless transmitter with vehicle control cabinet, and then send master controller to；
(4) formula W=G-W is pressed0The real-time hoist of crane is calculated, is 487289N i.e. 48.73 ton, it is not overweight；
(5) formula is pressedThe real-time amount of deflection for calculating girder 6 when hoist is G is
25.3mm, Q is trolley self weight (for 18T) in formula, is provided by the drawing of crane manufacturer, and minute book amount of deflection result is simultaneously defeated
Out.
According to the girder drawing data that manufacturer provides, is calculated according to the formula on coherent reference book, obtain this and rise
Its Main Girder Deflection calculated value is 26.5mm when 48.73 tons of weights of crane loading, is obtained with this patent measurement method real-time
Deflection value compares, and main beam design is partial to safety.For A5 rank crane, this crane girder amount of deflection feasible value is L/800
That is 28.125mm, real-time Main Girder Deflection are less than feasible value, safety.
Claims (2)
1. a kind of double girder overhead crane hoist and Main Girder Deflection on-line measurement system, it is characterised in that the measuring system includes hard
Part part and software section；The hardware components include ground black iron (1), equipped with washer type force snesor (14) suspension hook group (2),
Laser range sensor (3), L plate (4), screw group (5), cable drum (10), with vehicle control cabinet, wireless transmitter, wirelessly connect
Receive device, master controller, display, relay and cable power；The software section include wireless communication module, data acquisition with
Processing module and measurement control module；The laser range sensor (3) and the washer type force snesor (14) pass through respectively
Cable is connected with described with vehicle control cabinet, and the communication cable with vehicle control cabinet is connected with the wireless transmitter, the nothing
Module connects the wireless receiver to line transmitter by wireless communication；The wireless receiver passes through described in communication cable connection
Master controller, the display and the relay are connected by cable with the master controller；Described ground black iron (1) is embedded in master
On ground immediately below beam (6) span centre, the upper surface of described ground black iron (1) is in horizontality, described ground black iron (1) and Horizon
Face is concordant；The L plate (4) is welded on the span centre position of the girder (6) lower plate；The laser range sensor (3) passes through
The screw group (5) is fixed on the L plate (4), and the laser rays that the laser range sensor (3) issues downwards is perpendicular to ground
Plane；The washer type force snesor (14) is mounted on the top of the thrust bearing (12) in the suspension hook group (2), the washer
With one heart, the lower circle of the thrust bearing (12) and crossbeam (13) rigidly join for formula force snesor (14) and the thrust bearing (12)
Knot；Suspension hook (11) passes through the centre bore of the crossbeam (13), thrust bearing (12) and the washer type force snesor (14), described
Suspension hook (11) is linked by nut pressing plate (15) and bolt group (16) and the upper circle of the washer type force snesor (14)；It is described
Cable drum (10) is fixed on trolley (9), and the cable of the washer type force snesor (14) passes through the cable drum (10)
It is connected to described with vehicle control cabinet.
2. a kind of measurement method of measuring system according to claim 1, it is characterised in that the specific step of the measurement method
It is rapid as follows:
(1) the cart wheel (8) of unloaded crane is reached into institute with end carriage (7) and the girder (6) and the trolley (9)
The surface of ground black iron (1) is stated, the laser rays for enabling the laser range sensor (3) to launch vertically downward is mapped to describedly
The upper surface of black iron (1)；
(2) power transmission starts measuring system, and the laser range sensor (3) starts to measure, and must read is HQ, while the washer
Formula force snesor (14) starts to measure, and must read W0；The reading HQAnd W0Numerical value is described in vehicle control cabinet by described wireless
Transmitter issues radiofrequency signal to the wireless receiver on ground, and then sends the master controller to；
(3) direction of travel by unloaded crane along the cart wheel (8) drives away, and hangs on weight, then will be described in the crane
Cart wheel (8) with the end carriage (7) and the girder (6) and the trolley (9) reach described ground black iron (1) just on
Side, the laser rays for enabling the laser range sensor (3) to launch vertically downward are mapped to the upper surface of described ground black iron (1),
The laser range sensor (3) starts to measure, and must read is HG, while the washer type force snesor (14) starts to measure,
G must be read；The reading HGRadiofrequency signal is issued to ground by the wireless transmitter with vehicle control cabinet by described with G numerical value
The wireless receiver, and then send the master controller to；
(4) formula W=G-W is pressed0Calculate the real-time hoist of crane；
(5) formula is pressedThe real-time amount of deflection of the girder (6) when hoist is G is calculated, in formula
Q is trolley self weight, is provided by the drawing of crane manufacturer, records and export result；
It (6), being capable of real-time hoist when any time measures crane loading weight and right according to above-mentioned steps (3)-(5)
The real-time amount of deflection for the crane girder answered is alarmed if hoist is overweight or amount of deflection is more than feasible value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810789183.8A CN108584703B (en) | 2018-07-18 | 2018-07-18 | Double girder overhead crane hoist and Main Girder Deflection on-line measurement system and its measurement method |
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| CN201810789183.8A CN108584703B (en) | 2018-07-18 | 2018-07-18 | Double girder overhead crane hoist and Main Girder Deflection on-line measurement system and its measurement method |
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| CN108584703B true CN108584703B (en) | 2019-07-02 |
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| CN109879170B (en) * | 2019-03-29 | 2020-08-04 | 哈尔滨理工大学 | Crane jib sidewise bending displacement real-time detection system |
| CN114414276B (en) * | 2021-12-30 | 2024-04-09 | 东南大学 | Rapid detection device and evaluation method for bearing performance of bridge girder erection machine |
| CN117401580B (en) * | 2023-12-12 | 2024-04-05 | 河南卫华重型机械股份有限公司 | Crane girder deformation soft detection method |
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| DE4241351C1 (en) * | 1992-12-09 | 1994-06-30 | Deutsche Tiefbohr Ag | Device for controlling a cable-driven hoist |
| JPH0771958A (en) * | 1993-09-03 | 1995-03-17 | Hitachi Kiden Kogyo Ltd | Method for compensating reference angle used in device for detecting angle of deflection of hoisting accessory of crane |
| JP4026878B2 (en) * | 1996-11-22 | 2007-12-26 | 山九株式会社 | Relative position detection method between dollies in transportation work |
| CN2366393Y (en) * | 1999-04-21 | 2000-03-01 | 太原重型机械(集团)有限公司 | Device for real time measuring and monitoring strenth and rigidity of main beam of crane |
| JP4320931B2 (en) * | 2000-03-27 | 2009-08-26 | コベルコクレーン株式会社 | Crane overload prevention method and overload prevention device |
| JP2004299010A (en) * | 2003-03-31 | 2004-10-28 | Fanuc Ltd | Deflection correction device and deflection correction method |
| CN100395515C (en) * | 2006-08-31 | 2008-06-18 | 蓝章礼 | Tension line video deflection measuring device and method |
| CN101830397A (en) * | 2010-04-02 | 2010-09-15 | 太原科技大学 | System and method for acquiring loading spectrum parameter data of bridge crane |
| CN204080652U (en) * | 2014-06-13 | 2015-01-07 | 林同棪国际工程咨询（中国）有限公司 | Pre-stressed bridge deflection adjusting device and pre-stressed bridge thereof |
| CN105347192A (en) * | 2015-12-08 | 2016-02-24 | 辽宁工程技术大学 | Online monitoring system and method of deflection of portal crane girder |
| CN105631144B (en) * | 2015-12-31 | 2019-01-22 | 中国地质大学（武汉） | A kind of Car Crane Retractable Arms Calculation Method of Deflection considering dynamic loading |
| CN106586834B (en) * | 2016-12-27 | 2017-12-15 | 中国一冶集团有限公司 | The method and device of the lower amount of deflection in On-line sampling system arm stage casing |
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Effective date of registration: 20201217 Address after: 241000 No.8, e Qiao Road, economic development zone, Sanshan District, Wuhu City, Anhui Province Patentee after: WUHU YANGTZE RIVER LIFTING EQUIPMENT MANUFACTURE Co.,Ltd. Address before: 243002 59 Hudong Middle Road, Huashan District, Ma'anshan, Anhui Patentee before: ANHUI University OF TECHNOLOGY |
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Granted publication date: 20190702 |