CN101244792A - Surcharge load measuring and alarming device for crane of crane ship and measuring method thereof - Google Patents
Surcharge load measuring and alarming device for crane of crane ship and measuring method thereof Download PDFInfo
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- CN101244792A CN101244792A CNA2007100388619A CN200710038861A CN101244792A CN 101244792 A CN101244792 A CN 101244792A CN A2007100388619 A CNA2007100388619 A CN A2007100388619A CN 200710038861 A CN200710038861 A CN 200710038861A CN 101244792 A CN101244792 A CN 101244792A
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Abstract
The invention provides an overload determination and warning device for a lifting ship, comprising a lifting load determination and alarming mechanism and a lifting moment determination and alarming mechanism; wherein, the lifting load determination and alarming mechanism comprises the following parts: a lifting load determination sensor arranged under the load-bearing wires roller, a switching circuit which transforms the physical quantity measured by the lifting load determination sensor into the lifting load signal, a lifting load and overload determination and alarming signal processing circuit which is connected with the output of the lifting load signaling conversion circuit; the lifting moment determination alarming mechanism comprises the following parts: a boom amplitude angle sensor arranged on the boom and generating the force arm signal, a lifting moment overload determination and alarming processing circuit connected with the output end of the lifting load signaling conversion circuit and the boom amplitude angle sensor and the determination method. The lifting ship overload determination warning device has the advantages of outputting real-time lifting loads and lifting moment, performing real-time monitoring on the heavy loads and overloads of the lifting loads and moment and outputting alarm signal in time when heavy loads or overloads happen.
Description
Technical field
The field is measured in relate generally to crane ship lifting of the present invention, relates to a kind of Overload Alarm Device For Floating Crane Lifting Crane and measuring method thereof especially.
Background technology
The main application of crane ship is to be the operation at sea adequate and systematic service, and radical function is the big part weight of lifting.In order to satisfy the different requirements of hoisting operation waterborne, the tackling system of crane ship is generally single armed single hook system, single armed double-hung system or both arms double-hung system.Necessarily require suspension hook is risen detection, warning and the protection of heavy lift and hoisting moment thereof, to satisfy lifting safety in production requirement.When GB12602-90 " elevator machinery overload protection device technical specification of security " regulation reaches 90% left and right sides of rated load weight when an actual heavy lift (or hoisting moment), should send sound equipment or light early warning signal; When playing heavy lift (hoisting moment) amount and surpass rated load weight, should be able to stop hoisting crane and continue action to dangerous direction, the concurrent visual alarm of speaking, should be able to allow simultaneously hoisting crane to secure side to action.
Chinese patent application CN 89219959.8 discloses a kind of intelligent lifting prison side instrument, comprise pull-type sensing its, signal amplification circuit, A/D number conversion circuit, microprocessor system, display circuit, it is characterized in that pull-type sensor is connected on the hanging device on the static lifting rope; The sensor mouth is connected with the input end of the amplifying circuit of being made up of op amp MC 7650. and its output is delivered to that hop is sampled, picked to the microprocessor system that micro controller system 8031 forms, is demonstrated weight by coupled display circuit again after the processing such as average through coupled A/D D/A converting circuit.But it can not be reported to the police to the heavy duty and the overload of weight-lifting equipment load, has very big potential safety hazard.
Chinese patent application 200410004306.0 provides a kind of moment display device of lifting kind equipment, contain electronic digital type show rulers, signal amplifier, digital indicator, it is characterized in that accurately measuring the variable in distance of moment steel plate and being reflected on the digital indicator in the operator's compartment with the electronic digital display scale.It does not possess the function that hoisting moment heavy duty and overload are reported to the police too.
Summary of the invention
Technical matters first aspect to be solved by this invention provides a kind of Overload Alarm Device For Floating Crane Lifting Crane, heavy lift and hoisting moment have been monitored in real time, (as 90%) in time sends alerting signal when playing heavy lift or moment near rated value, (as 110%) in time cuts off control system when playing threshold value of heavy lift or moment overrate, causes the generation of crane ship capsizing case to prevent the tackling system overload.
Technical matters second aspect to be solved by this invention provides a kind of crane ship and rises and reuse the overload method for measuring.
A kind of Overload Alarm Device For Floating Crane Lifting Crane as first aspect present invention is characterized in that, comprising:
Heavy lift is measured alarm mechanism together, and it comprises:
One is arranged on the heavy lift determination sensor under the load-bearing wires rope roller,
To play the lifting load signal change-over circuit that physical quantity that the heavy lift determination sensor measures is transformed into the lifting load signal,
Playing the heavy lift overload with lifting load signal change-over circuit mouth bonded assembly measures and the alerting signal treatment circuit; With
One hoisting moment is measured alarm mechanism, and it comprises:
One is arranged on the arm change angle sensor that produces arm of force signal on the arm,
Measure and the warning treatment circuit with described lifting load signal change-over circuit mouth and the overload of arm change angle sensor bonded assembly hoisting moment.
Among the present invention, described heavy lift determination sensor comprises:
One base;
Be arranged on the guide groove on the base;
On the base in the guide groove, be close to base and be provided with a pressure-strain sheet, pressure-strain sheet top is provided with a pressure spring, and the pressure spring top is provided with a push rod, the push rod top is provided with a carrying slide block that can slide in guide groove, load-bearing wires rope roller shaft is arranged on the carrying slide block.
Described lifting load signal change-over circuit comprises the dc balance electric bridge that is made of pressure-strain sheet and other three precision resistances, with electric bridge bonded assembly signal conditioning circuit, amplifies back output by the signal conditioning circuit filter out background noise and with the lifting load signal.
Described heavy lift overload measured and the alerting signal treatment circuit, comprise: positive input terminal and lifting load signal change-over circuit mouth bonded assembly emitter follower, the heavy lift that its mouth one tunnel output is measured, two-way connects the negative input end of load heavy duty warning comparator and load overload cut-out comparator respectively in addition, the positive input terminal of two comparators connects divider resistance, constitute bleeder circuit, the mouth of two comparators is exported load heavy duty alarm switch amount signal and load overload cut-out switch amount signal respectively, wherein the divider resistance resistance is variable, to set different limit values, for lifting load signal input saturation, the positive input terminal of described emitter follower also is connected with voltage stabilizer.
Described hoisting moment overload is measured and the warning treatment circuit, comprise: positive input terminal respectively with lifting load signal change-over circuit and arm change angle sensor mouth bonded assembly two emitter followers, the mouth of two emitter followers connects the input end of a multiplicative operator respectively, the hoisting moment that mouth one tunnel output of multiplicative operator is measured, the negative input end of comparator is cut off in two-way difference coupling torque heavy duty warning comparator and moment overload in addition, the positive input terminal of two comparators connects divider resistance, constitute bleeder circuit, the mouth of two comparators is output torque heavy duty alarm switch amount signal and moment overload cut-out switch amount signal respectively, wherein the divider resistance resistance is variable, to set different limit values, for lifting load signal and arm of force signal input saturation, the positive input terminal of described two emitter followers also is connected with voltage stabilizer.
Rise as a kind of crane ship of second aspect present invention and to reuse the overload method for measuring, it comprises the steps:
1. play the physical quantity of heavy lift determination sensor measuring load, and physical quantity is converted to load signal by signaling conversion circuit;
2. the load signal of conversion has been imported the heavy lift overload and measured and the alerting signal treatment circuit, obtained real-time lifting load value, and played heavy lift heavy duty alarm switch amount signal and overload cut-out switch amount signal by the relatively output of comparator;
3. arm change angle sensor produces arm of force signal, and the arm of force signal and the load signal that produce are imported multiplicative operator together;
4. export real-time hoisting moment value after the multiplicative operator computing, and by the relatively output hoisting moment heavy duty alarm switch amount signal of comparator and the cut-out switch amount signal that overloads.
The present invention only need measure physical quantity of heavy lift just can export heavy lift and hoisting moment in real time by circuit, and the heavy duty and the overload that play heavy lift and moment monitored in real time, timely output alarm signal when heavy duty or overload condition occurring is to guarantee safety.
Description of drawings
Fig. 1 plays the structural representation of heavy lift determination sensor for the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the schematic circuit diagram of lifting load signal change-over circuit of the present invention.
Fig. 4 measures and alerting signal treatment circuit schematic diagram for the present invention plays the heavy lift overload.
Fig. 5 measures and alerting signal treatment circuit schematic diagram for hoisting moment overload of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
A kind of Overload Alarm Device For Floating Crane Lifting Crane, it has comprised that heavy lift is measured alarm mechanism and hoisting moment is measured alarm mechanism.As shown in Figure 1 and Figure 2, the load determination sensor that plays heavy lift mensuration alarm mechanism is arranged under the roller of load-bearing wires rope, it comprises a base 11, which is provided with guide groove 12, on the base 11 in the guide groove 12, be close to base 11 and be provided with a pressure-strain sheet 13, pressure-strain sheet 13 tops are provided with a pressure spring 14, pressure spring 14 tops are provided with a push rod 15, push rod 15 tops are provided with a carrying slide block 16 that can slide in guide groove 12, the rotating shaft 19 of the roller 18 of load-bearing wires rope 17 is arranged on the carrying slide block 16.
Load-bearing wires rope 17 tension force act on roller 18, make carrying slide block 16 press to push rod 15 in the guide groove 12 that limits.The pressure that produces by pressure spring 14 acts on pressure-strain sheet 13, and strain-gauge resistance value Rx is changed, and its variable quantity Rx is directly proportional with the tension force F of load-bearing wires rope 17:
ΔR
x＝k
1F
And load-bearing wires rope 17 tension force F are directly proportional with a heavy lift G:
F＝k
2G
Therefore:
ΔR
x＝k
1k
2G
As shown in Figure 3, pressure-strain sheet 13 is constituted the dc balance electric bridge with precision resistance R20, R30, R40 can obtain this millivolt level (mV) signal,
Vs is a bridge power supply in the formula, output signal V is directly proportional with a heavy lift G, but by amplifying the lifting load signal that 1-5V is exported in the back with electric bridge bonded assembly signal conditioning circuit 21 filter out background noise and with signal, wherein signal conditioning circuit 21 is prior aries, and be widely adopted, this just not tired having stated.
Referring to Fig. 4, the lifting load signal that produces has been imported the heavy lift overload and has been measured and the alerting signal treatment circuit, can obtain the real-time heavy lift that rises, and timely output alarm switching value signal when heavy duty or overload condition occurring is monitored in the heavy duty and the overload that play heavy lift and moment in real time.The positive input terminal that comes from the load signal emitter follower input U1 of load transducer, for the lifting load signal is carried out input saturation, emitter follower U1 positive input terminal also can connect voltage stabilizer D1, emitter follower U1 one tunnel output is measured after isolating plays heavy lift; The resistance R 3 of leading up to connects the negative input end of comparator U6, positive input terminal series resistance R4, R2 and the R1 of comparator U6, wherein resistance R 2 is a variable resistance, one end ground connection, the mouth of comparator U6 is connected to a resistance R 6, it is by comparing the limit value of load signal and setting, the switching value signal that exportable load heavy duty is reported to the police when overload; The resistance R 9 of leading up to connects the negative input end of comparator U7, positive input terminal series resistance R10, R8 and the R7 of comparator U7, wherein resistance R 8 is a variable resistance, one end ground connection, the mouth of comparator U6 is connected to a resistance R 12, and it is by comparing the limit value of load signal and setting, the switching value signal that exportable load overload is cut off when overload, because therefore resistance R 2 and R8 scalable can be provided with different limit values easily.
The product that plays heavy lift G and projected length (arm of force) L of crane arm on horizontal axis is a hoisting moment:
T＝k
4GL
K4 is a proportionality coefficient in the formula.Because arm is done luffing motion around attachment point, so L is variable, and it is directly proportional with the cosine of the change angle of arm.Therefore do not overload when lift heavy, but change angle may cause the overload of hoisting moment when excessive.
Referring to Fig. 5, the load signal and the arm of force signal difference emitter follower input U1 of arm change angle sensor and the positive input terminal of U2 that come from load transducer, for lifting load signal and torque signals are carried out input saturation, the positive input terminal of emitter follower U1 and U2 is connected with voltage stabilizer D1 and D2 respectively, isolate the input end that after load signal and arm of force signal are input to multiplier U4, the hoisting moment that output one tunnel output of multiplier U4 is measured through emitter follower U1 and U2; The resistance R 13 of leading up to connects the negative input end of comparator U8, positive input terminal series resistance R18, R17 and the R16 of comparator U8, wherein resistance R 17 is a variable resistance, one end ground connection, the mouth of comparator U8 is connected to a resistance R 15, its the torque signals by relatively passing through computing and the limit value of setting, the switching value signal that exportable moment heavy duty is reported to the police when overload; The resistance R 19 of leading up to connects the negative input end of comparator U9, positive input terminal series resistance R24, R23 and the R22 of comparator U8, wherein resistance R 23 is a variable resistance, one end ground connection, the mouth of comparator U9 is connected to a resistance R 21, its torque signals by relatively passing through computing and the limit value of setting, the switching value signal that exportable moment overload is cut off when overload, because therefore resistance R 17 and R23 scalable can be provided with different limit values easily.
More than show and described groundwork of the present invention and principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. an Overload Alarm Device For Floating Crane Lifting Crane is characterized in that, comprising:
Heavy lift is measured alarm mechanism together, and it comprises:
One is arranged on the heavy lift determination sensor under the load-bearing wires rope roller,
To play the lifting load signal change-over circuit that physical quantity that the heavy lift determination sensor measures is transformed into the lifting load signal,
Playing the heavy lift overload with lifting load signal change-over circuit mouth bonded assembly measures and the alerting signal treatment circuit; With
One hoisting moment is measured alarm mechanism, and it comprises:
One is arranged on the arm change angle sensor that produces arm of force signal on the arm,
Measure and the warning treatment circuit with described lifting load signal change-over circuit mouth and the overload of arm change angle sensor bonded assembly hoisting moment.
2. the device shown in claim 1, it is characterized in that: described heavy lift determination sensor comprises:
One base;
Be arranged on the guide groove on the base;
On the base in the guide groove, be close to base and be provided with a pressure-strain sheet, pressure-strain sheet top is provided with a pressure spring, and the pressure spring top is provided with a push rod, the push rod top is provided with a carrying slide block that can slide in guide groove, load-bearing wires rope roller shaft is arranged on the carrying slide block.
3. the device shown in claim 1, it is characterized in that: described lifting load signal change-over circuit comprises the dc balance electric bridge that is made of pressure-strain sheet and other three precision resistances, with electric bridge bonded assembly signal conditioning circuit.
4. the device shown in claim 1, it is characterized in that: described heavy lift overload measured and the alerting signal treatment circuit, comprise: positive input terminal and lifting load signal change-over circuit mouth bonded assembly emitter follower, the heavy lift that its mouth one tunnel output is measured, two-way connects the negative input end of load heavy duty warning comparator and load overload cut-out comparator respectively in addition, the positive input terminal of two comparators connects divider resistance, constitute bleeder circuit, the mouth of two comparators is exported load heavy duty alarm switch amount signal and load overload cut-out switch amount signal respectively.
5. the device shown in claim 4 is characterized in that: described divider resistance resistance scalable.
6. the device shown in claim 4, it is characterized in that: the positive input terminal of described emitter follower is connected with voltage stabilizer.
7. the device shown in claim 1, it is characterized in that: described hoisting moment overload is measured and the warning treatment circuit, comprise: positive input terminal respectively with lifting load signal change-over circuit and arm change angle sensor mouth bonded assembly two emitter followers, the mouth of two emitter followers connects the input end of a multiplicative operator respectively, the hoisting moment that mouth one tunnel output of multiplicative operator is measured, the negative input end of comparator is cut off in two-way difference coupling torque heavy duty warning comparator and moment overload in addition, the positive input terminal of two comparators connects divider resistance, constitute bleeder circuit, the mouth of two comparators is output torque heavy duty alarm switch amount signal and moment overload cut-out switch amount signal respectively.
8. the device shown in claim 7 is characterized in that: described divider resistance resistance scalable.
9. the device shown in claim 7, it is characterized in that: the positive input terminal of described emitter follower is connected with voltage stabilizer.
10. a crane ship rises and reuses the overload method for measuring, and it comprises the steps:
1]. play the physical quantity of heavy lift determination sensor measuring load, and physical quantity is converted to load signal by signaling conversion circuit;
2]. the load signal of conversion has been imported the heavy lift overload measured and the alerting signal treatment circuit, obtained real-time lifting load value, and played heavy lift heavy duty alarm switch amount signal and overload cut-out switch amount signal by the relatively output of comparator;
3]. arm change angle sensor produces arm of force signal, and the arm of force signal and the load signal that produce are imported multiplicative operator together;
4]. the real-time hoisting moment value of output after the multiplicative operator computing, and by the relatively output hoisting moment heavy duty alarm switch amount signal of comparator and the cut-out switch amount signal that overloads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100388619A CN101244792B (en) | 2007-03-30 | 2007-03-30 | Surcharge load measuring and alarming device for crane of crane ship and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100388619A CN101244792B (en) | 2007-03-30 | 2007-03-30 | Surcharge load measuring and alarming device for crane of crane ship and measuring method thereof |
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| CN101244792A true CN101244792A (en) | 2008-08-20 |
| CN101244792B CN101244792B (en) | 2010-08-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111064A (en) * | 2013-01-25 | 2013-05-22 | 苏州大学 | Deflection degree detection control system and strength balance trainer comprising the same |
| CN105798777A (en) * | 2016-05-18 | 2016-07-27 | 常州市金海基机械制造有限公司 | Grinding and debris suction device for mechanical part |
| CN107063523A (en) * | 2016-02-11 | 2017-08-18 | 摩巴自动控制股份有限公司 | Electronic circuit, measuring cell, load detecting equipment and the vehicle including it |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07125987A (en) * | 1993-11-08 | 1995-05-16 | Komatsu Mec Corp | Suspension load/overturning moment detecting device for mobile crane |
| US6044991A (en) * | 1995-06-21 | 2000-04-04 | Altec Industries, Inc. | Load measuring apparatus for aerial booms and jibs |
| US6843383B2 (en) * | 2003-02-24 | 2005-01-18 | National Crane Corporation | Jib load limiting device |
| CN201043125Y (en) * | 2007-03-30 | 2008-04-02 | 上海港务工程公司 | Warning device of overload measurement for hoisting of crane ship |
-
2007
- 2007-03-30 CN CN2007100388619A patent/CN101244792B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111064A (en) * | 2013-01-25 | 2013-05-22 | 苏州大学 | Deflection degree detection control system and strength balance trainer comprising the same |
| CN107063523A (en) * | 2016-02-11 | 2017-08-18 | 摩巴自动控制股份有限公司 | Electronic circuit, measuring cell, load detecting equipment and the vehicle including it |
| US10495529B2 (en) | 2016-02-11 | 2019-12-03 | Moba Mobile Automation Ag | Electrical full bridge strain gauge circuit, load cell, and load detection device for use in lifting platforms, trucks, and other machines |
| CN105798777A (en) * | 2016-05-18 | 2016-07-27 | 常州市金海基机械制造有限公司 | Grinding and debris suction device for mechanical part |
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| CN101244792B (en) | 2010-08-18 |
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Address after: No.1, Fenghe Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201207 Patentee after: China Construction port and Waterway Bureau Group Co.,Ltd. Patentee after: Shanghai Maritime University Address before: No.1, Fenghe Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201207 Patentee before: CHINA STATE CONSTRUCTION HARBOUR CONSTRUCTION Co.,Ltd. Patentee before: Shanghai Maritime University |
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Address after: No.1, Fenghe Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201207 Patentee after: CHINA STATE CONSTRUCTION HARBOUR CONSTRUCTION Co.,Ltd. Patentee after: Shanghai Maritime University Address before: 200082 No. 1 Fenghe Road, Shanghai, Pudong New Area Patentee before: SHANGHAI HARBOR ENGINEERING Corp. Patentee before: Shanghai Maritime University |