CN105883621A - Distributed weighing system on basis of DP bus for large gantry cranes - Google Patents
Distributed weighing system on basis of DP bus for large gantry cranes Download PDFInfo
- Publication number
- CN105883621A CN105883621A CN201610445933.0A CN201610445933A CN105883621A CN 105883621 A CN105883621 A CN 105883621A CN 201610445933 A CN201610445933 A CN 201610445933A CN 105883621 A CN105883621 A CN 105883621A
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- China
- Prior art keywords
- weighing
- bus
- plc
- master station
- weighing system
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Classifications
-
- 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
-
- 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
- B66C13/18—Control systems or devices
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
Abstract
The invention discloses a distributed weighing system on the basis of DP bus for large gantry cranes. The distributed weighing system is characterized in that a plurality of groups of weighing units are respectively connected with corresponding PLC (programmable logic control) substations by on-off output and the DP bus, the various PLC substations are connected with a PLC master station by the DP bus, the PLC master station is connected with an industrial personal computer by an Ethernet, the industrial personal computer is connected with a weighing display by a cable, each group of weighing unit comprises a weighing instrument host, a plurality of hook weighing sensors and signal transmitters, the various hook weighing sensors are connected with the weighing instrument hosts by the various corresponding signal transmitters by the aid of analog signals, and the various weighing instrument hosts are respectively connected with the corresponding PLC substations by on-off output and the DP bus. Compared with the prior art, the distributed weighing system has the advantages that data can be reliably transmitted, the distributed weighing system is good in anti-electromagnetic interference property, the signals can be transmitted without distortion, safety supervision systems can directly acquire weighing system data of digital signals which are converted at one step, and the distributed weighing system is convenient to extent and can be configured by means of simple setting after new equipment accesses networks.
Description
Technical field
The present invention relates to crane peace keyholed back plate reason technical field, a kind of distributed large-sized gantry based on DP bus
Weighing system of crane.
Background technology
Along with the development of national economy, large-sized gantry crane is widely used in shipyard and each heavy industry field, country
The departments such as handling machinery Quality Supervision and Inspection Center put into effect " GB/T28264-2012 " hoisting machinery security monitoring pipe in recent years
Reason system " " national regulation in require that crane is weighed at large and medium-sized hoisting machinery popularization and application security monitoring management system
Safeguard protection that system must configure as crane and supervising device, and the weighing data of crane, as safety supervision system
Important parameter, can improve crane safety, conveniently review device history duty, meets the requirement analyzing fault.Large-scale
Gantry crane weighing system is typically by groups such as weighing instrument main frame, suspension hook LOAD CELLS, signal transmitting device, communication cables
Becoming, weighing instrument main frame is positioned at crane cabin, and suspension hook LOAD CELLS, signal transmitting device are positioned at upper and lower dolly.Lifting
Each suspension hook on machine all configures LOAD CELLS, the suspension hook dynamometry position that LOAD CELLS is arranged in upper and lower dolly, weighs
The signal of sensor output is generally voltage and accesses its neighbouring signal transmitting device, signal transmitting device by weight signal by long away from
From communication cable input weighing instrument main frame, main frame instrument output switch amount signal and 4 ~ 20mA analog quantity or RS485 bus, this
A little signals input crane mainframe PLC, main frame instrument arrangement is weighed the information such as display screen, display lifting capacity data.
Prior art also exists long range propagation analogue signal distortion and the problem of modulus signal conversion, and large-sized gantry rises
Heavy-duty machine girder span is 100m ~ 200m, because space is laid and stretched in the movement of cable, upper and lower dolly communication cable is all higher than
Its stroke.According to suspended cables mode, girder span is the simulation that the crane of 100m ~ 200m needs 150m ~ 300m length
Amount communication cable.And the output signal of LOAD CELLS (transmitter) is transmitted to weighing instrument main frame with analog quantity, in distance
Analog quantity transmission in, owing to electromagnetic interference easily causes the distortion distortion of analogue signal, because the power cable of converter is also
In adjacent drag chain or suspended cables, and other electromagnetic interference source, cause the distortion of weighing-up wave.It directly affects and has been
Weight display mistake and protection false alarm of weighing.GB/T 28264-2012 requires that crane is equipped with at signal collection unit, signal
The hardware facilities such as reason unit, wherein information collection unit is used for reading information source data.Safety supervision system needs to gather weighing data,
Being gathered by weighing instrument, interface is usually 4 ~ 20mA analog quantity or RS485 bus.If signals collecting selects analog quantity mode,
Then there is modulus-digital-to-analogue multiple conversions, signal accuracy reduces.It is digital instrumentation, if weighing-up wave passes through at present in industry
Analog quantity is transmitted, then there is the situation of digital-to-analogue two times transfer.First, sensor original analog carries out numeral in gauge internal
Changing, then digital signal transfers analog signals to, is transferred to PLC by analog quantity interface, and analogue signal is translated into by PLC
Digital data transmission is to safety supervision system.Modulus-digital-to-analogue multiple conversions in the process, its signal accuracy necessarily reduces.And connect
The costs such as mouth die block cost is high, PLC analog module, RS485 module are above common analog I/O module.Configuration autgmentability
Difference, if desired changes weighing system, uses RS485 communication, then needs to reset master-salve station.
Summary of the invention
It is an object of the invention to a kind of based on DP bus the distributed large-scale door designed for the deficiencies in the prior art
Formula weighing system of crane, uses modularized design and the digital data transmission of packet configuration, weighing system is incorporated into lifting
The electrical system of machine host, array weighing unit is connected with each PLC substation by output switch parameter and DP bus respectively, and each PLC divides
Standing and connected PLC master station by DP bus, signal transmission is undistorted, and electromagnetism interference, safety supervision system can directly gather a turn over number
The weighing system data of word signal, and crane mainframe PLC is without increasing communication interface conversion module or analog module, has
Obtain that initial data precision is high and system extends convenient advantage, only need to by the most configurable to new equipment access network, easy configuration,
Important leverage is provided for large-sized gantry crane safety.
The object of the present invention is achieved like this: a kind of distributed large-sized gantry crane based on DP bus is weighed and is
System, including array weighing unit, each PLC substation and PLC master station, industrial computer and weight display, is characterized in that array is weighed
Unit is connected with each corresponding PLC substation by output switch parameter and DP bus respectively, and each PLC substation is by DP bus and PLC master station
Connecting, PLC master station is connected with industrial computer by Ethernet, and industrial computer is connected weight display, described each group of list of weighing by cable
Unit is made up of with several suspension hook LOAD CELLSs and signal transmitting device weighing instrument main frame, and each suspension hook LOAD CELLS is by each phase
The signal transmitting device answered uses analogue signal to be connected with weighing instrument main frame, and each weighing instrument main frame is respectively adopted output switch parameter
Connect with each corresponding PLC substation with DP bus.
Described each PLC substation configuration DP interface
Described each PLC master station configuration ethernet interface module.
The present invention compared with prior art has weighing system and is incorporated into crane mainframe electrical system, and signal transmission is without losing
Very, anti-interference, without distance analog signals transmission link, overall situation digital data transmission, safety supervision system can directly gather once
Convert the weighing system data of digital signal, the data of original precision can be obtained, and crane mainframe PLC is without increasing communication
Interface conversion module or analog module, system extension is convenient, only need to by the most configurable to new equipment access network, easy configuration,
System run all right, data transmission is reliable, and engineering cost is low, easy to maintenance, provides important for large-sized gantry crane safety
Ensure.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is weighing unit structural representation.
Detailed description of the invention
Refering to accompanying drawing 1, the present invention is by array weighing unit 1, each PLC substation 2 and PLC master station 3, industrial computer 4 and weighs
Display 5 forms, and described array weighing unit 1 is connected with each corresponding PLC substation 2 by output switch parameter and DP bus respectively,
Each PLC substation 2 is connected with PLC master station 3 by DP bus, and PLC master station 3 is connected with industrial computer 4 by Ethernet, and industrial computer 4 is by cable
Connect weight display 5；Described each PLC substation 2 configures DP interface；Described each PLC master station 3 configuration ethernet interface module.
Refering to accompanying drawing 2, described each group of weighing unit 1 is by weighing instrument main frame 11 and several suspension hook LOAD CELLSs 13
Forming with signal transmitting device 12, each suspension hook LOAD CELLS 13 is used analogue signal by each corresponding signal transmitting device 12 and is weighed
Instrument main frame 11 connects, and each weighing instrument main frame 11 is respectively adopted output switch parameter and DP bus with each corresponding PLC substation 2 even
Connect；Described PLC substation 2 configures DP interface, such as the IM153-2 module of the ET200M series of Siemens.
In present invention distribution based on DP bus uses packet configuration, modularized design, dolly (upper dolly or under
Dolly) configure one group of weighing unit 1, complete machine carrys out configuration packet quantity according to the dolly quantity of crane, and complete machine configures 2 ~ 3 groups
Weighing unit 1, all uses DP field bus communication between weighing unit 1 and PLC master station 3.Weighing instrument main frame 11 is with some
Individual suspension hook LOAD CELLS 13 and signal transmitting device 12 are all positioned at dolly, and weighing instrument main frame 11 is remote in being installed on dolly
Cashier's office in a shop, it exports DP bus signals and on-off model, lifting owner in these long-range control chambers of signal input trolley in process control
The PLC substation 2 of machine, the suspension hook dynamometry position that suspension hook LOAD CELLS 13 is arranged in dolly, suspension hook LOAD CELLS 13 exports
Signal (generally voltage) access each corresponding signal transmitting device 12 near it, signal transmitting device 12 by weight signal by logical
Communication cable input weighing instrument main frame 11.Because single weighing unit 1 of group and the PLC substation 2 of crane mainframe are respectively positioned on dolly
Inside, single channel cable length is respectively less than 20m.Wherein, the DP cable of the PLC substation 2 of single group weighing unit 1 and crane mainframe is long
Degree is less than 3m, and weighing instrument main frame 11, suspension hook LOAD CELLS 13, analog quantity transmission cable between signal transmitting device 12 is each are long
Degree is less than 15m.
The present invention is integrated into crane mainframe electrical system, wherein PLC substation 2, PLC master station 3 by electrical system integrator
Being crane electrical system standard configuration with industrial computer 4, weight display 5 can be with the display of crane management information system
Share.PLC master station 3, industrial computer 4 and weight display 5 are arranged on drivers' cab.Owing to the weight output signal of weighing unit 1 is straight
Tap into the PLC substation 2 in the long-range control chamber of dolly, connected by optical fiber between PLC master station 3 and each PLC substation 2, therefore this
The entrance crane electric control system of a little signal lossless consumptions.In complete machine weighing system, the weighing unit 1 of each single group can gather this
Single hook weighing data of suspension hook in dolly, these data input PLC master station 3, the PLC master station 3 data to the weighing unit 1 of each group
Carrying out comprehensive computing, can obtain crane machine complete machine weighing data, weight data is transmitted to industrial computer 4 by PLC master station 3, if
Putting the weight display 5 at drivers' cab and can show single hook gravimetric value and the gravimetric value etc. of complete machine, safety supervision system simultaneously can be direct
Weighing system data are gathered from industrial computer.Each PLC substation 2 and PLC master station 3 due to weighing unit 1 and crane mainframe
Between all use DP field bus communications, in complete machine weighing system, the weighing unit 1 of each single group is independent DP substation,
System carries out software design patterns according to the communication of standard DP.
More than simply the present invention is further illustrated, and is not used to limit this patent, all implements for equivalence of the present invention,
Within being intended to be limited solely by the right of this patent.
Claims (3)
1. a distributed large-sized gantry crane weighing system based on DP bus, including array weighing unit, each PLC substation
And PLC master station, industrial computer and weight display, it is characterised in that array weighing unit is respectively by output switch parameter and DP bus
Connecting with each corresponding PLC substation, each PLC substation is connected with PLC master station by DP bus, and PLC master station is by Ethernet and industrial computer
Connecting, industrial computer is connected weight display by cable, and described each group of weighing unit is by weighing instrument main frame and several suspension hooks
LOAD CELLS and signal transmitting device composition, each suspension hook LOAD CELLS by each corresponding signal transmitting device use analogue signal with
Weighing instrument main frame connects, and each weighing instrument main frame is respectively adopted output switch parameter and DP bus with each corresponding PLC substation even
Connect.
Distributed large-sized gantry crane weighing system based on DP bus the most according to claim 1, it is characterised in that institute
State each PLC substation configuration DP interface.
Distributed large-sized gantry crane weighing system based on DP bus the most according to claim 1, it is characterised in that each
PLC master station configuration ethernet interface module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445933.0A CN105883621A (en) | 2016-06-21 | 2016-06-21 | Distributed weighing system on basis of DP bus for large gantry cranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445933.0A CN105883621A (en) | 2016-06-21 | 2016-06-21 | Distributed weighing system on basis of DP bus for large gantry cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105883621A true CN105883621A (en) | 2016-08-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610445933.0A Pending CN105883621A (en) | 2016-06-21 | 2016-06-21 | Distributed weighing system on basis of DP bus for large gantry cranes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285184A (en) * | 2017-08-22 | 2017-10-24 | 中船第九设计研究院工程有限公司 | A kind of distributed large-sized gantry crane weighing system |
| CN108508816A (en) * | 2018-06-14 | 2018-09-07 | 上海汇焰智能科技有限公司 | Distribution hanging weighing system and distributed hangar system |
| CN113666267A (en) * | 2021-08-25 | 2021-11-19 | 浙江硕实机械有限公司 | Automatic detection and data statistics control system for hoisting weight of crane |
| CN114115103A (en) * | 2021-11-12 | 2022-03-01 | 中船第九设计研究院工程有限公司 | Dock gate human-computer interface expansion system |
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| CN201587813U (en) * | 2009-12-28 | 2010-09-22 | 江苏华澄重工有限公司 | Weight display and overweight protection device of portal crane |
| CN202625637U (en) * | 2012-05-03 | 2012-12-26 | 温州合力建设机械有限公司 | Bridge crane with weighing monitoring system |
| CN103072897A (en) * | 2013-02-06 | 2013-05-01 | 中船第九设计研究院工程有限公司 | Programmable logic controller (PLC) communication method of gantry crane of decentralized periphery (DP) bus framework |
| CN103145045A (en) * | 2013-03-21 | 2013-06-12 | 中船第九设计研究院工程有限公司 | Gantry crane PLC (programmable logic controller) field bus network constructed by Ethernet |
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| CN205676028U (en) * | 2016-06-21 | 2016-11-09 | 中船第九设计研究院工程有限公司 | A kind of distributed large-sized gantry crane weighing system based on DP bus |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201587813U (en) * | 2009-12-28 | 2010-09-22 | 江苏华澄重工有限公司 | Weight display and overweight protection device of portal crane |
| CN202625637U (en) * | 2012-05-03 | 2012-12-26 | 温州合力建设机械有限公司 | Bridge crane with weighing monitoring system |
| CN103072897A (en) * | 2013-02-06 | 2013-05-01 | 中船第九设计研究院工程有限公司 | Programmable logic controller (PLC) communication method of gantry crane of decentralized periphery (DP) bus framework |
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| CN205676028U (en) * | 2016-06-21 | 2016-11-09 | 中船第九设计研究院工程有限公司 | A kind of distributed large-sized gantry crane weighing system based on DP bus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285184A (en) * | 2017-08-22 | 2017-10-24 | 中船第九设计研究院工程有限公司 | A kind of distributed large-sized gantry crane weighing system |
| CN108508816A (en) * | 2018-06-14 | 2018-09-07 | 上海汇焰智能科技有限公司 | Distribution hanging weighing system and distributed hangar system |
| CN113666267A (en) * | 2021-08-25 | 2021-11-19 | 浙江硕实机械有限公司 | Automatic detection and data statistics control system for hoisting weight of crane |
| CN114115103A (en) * | 2021-11-12 | 2022-03-01 | 中船第九设计研究院工程有限公司 | Dock gate human-computer interface expansion system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |