CN107285184A - A kind of distributed large-sized gantry crane weighing system - Google Patents
A kind of distributed large-sized gantry crane weighing system Download PDFInfo
- Publication number
- CN107285184A CN107285184A CN201710721380.1A CN201710721380A CN107285184A CN 107285184 A CN107285184 A CN 107285184A CN 201710721380 A CN201710721380 A CN 201710721380A CN 107285184 A CN107285184 A CN 107285184A
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- Prior art keywords
- weighing
- unit
- crane
- conversion module
- instrument
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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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/40—Crane hooks formed or fitted with load measuring or indicating 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
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of distributed large-sized gantry crane weighing system, weighing unit is characterized in for array and is connected successively with master instrument and PLC main frames by field bus communication by two photoelectric conversion modules respectively, the weighing unit is connected and constituted with several suspension hook weighing sensors and signal transmitting device by cable by weighing instrument main frame, and weighing unit is connected with master instrument and PLC main frames successively by optical cable.The present invention has independent operating and enters row data communication with crane complete machine electric-control system compared with prior art, global digital data transmission, undistorted, good in anti-interference performance, safety supervision system can directly gather the weighing system data for once converting data signal, system operation is not by crane mainframe systematic influence, reliability is high, and stable, data transfer is reliable, it is easy to maintenance, provide important leverage for large-sized gantry crane security.
Description
Technical field
The present invention relates to crane safety control technology field, especially a kind of Fieldbus Based distributed large-scale door
Formula weighing system of crane.
Background technology
Large-sized gantry crane weighing system it is general by weighing instrument main frame, it is suspension hook weighing sensor, signal transmitting device, logical
Communication cable etc. is constituted, and weighing instrument main frame is located at crane cabin, and suspension hook weighing sensor, signal transmitting device are located at small up and down
Each suspension hook on in-car, crane configures weighing sensor, and weighing sensor is arranged on small in-car suspension hook dynamometry up and down
Position.The signal of weighing sensor output is generally the signal transmitting device that analog quantity voltage is accessed near it, and signal transmitting device will
Analog quantity current signal inputs weighing instrument main frame by long-distance cable.Weighing instrument main frame configures weighing display screen, display
The information such as lifting capacity data.The exportable on-off model of main frame instrument and 4 ~ 20mA analog quantitys or RS485 bus signals, these letters
Number it is available for main frame PLC and safety supervision system to call.The departments such as national handling machinery Quality Supervision and Inspection Center put into effect in recent years
“GB/T28264-2012《Hoisting machinery security monitoring management system》" national regulation in require in large and medium-sized hoisting machinery
Popularization and application security monitoring management system, the safeguard protection and monitoring that weighing system of crane must be configured as crane is filled
Put, and the weighing data of crane, as the important parameter of safety supervision system, crane safety can be improved, equipment is conveniently reviewed
History working condition, meets the requirement of analysis failure.At present, it is domestic largely to need of add-assembly or new clothes safety supervision system
Heavy-duty machine must gather the weighing data of crane, be used as the important parameter of safety supervision system.
The safety supervision system long range transmission of analogue signal of prior art has problems with：
（1）Large-sized gantry crane girder span is 100m ~ 200m, because space is laid and stretched in the movement of cable, up and down
Dolly communication cable is all higher than its stroke, according to suspended cables mode, and girder span needs for 100m ~ 200m crane
The analog quantity communication cable of 150m ~ 300m length.And weighing sensor（Transmitter）Output signal transmitted with analog quantity to title
Weight instrument main frame, in the analog quantity transmission of long range, electromagnetic interference causes the distortion distortion of analog signal, because frequency converter
Power cable causes the distortion of weighing-up wave also in adjacent drag chain or suspended cables, and other electromagnetic interference sources, and its is straight
It is lifting capacity display mistake and protection false alarm of weighing to connect influence.
（2）Safety supervision system gathers weighing data by weighing instrument, and interface is usually 4 ~ 20mA analog quantitys or RS485 total
, if signal acquisition selects analog quantity mode, there are modulus-digital-to-analogue multiple conversions, signal accuracy reduction in line.In current industry
For digital instrumentation, if weighing-up wave is transmitted by analog quantity, there is a situation where digital-to-analogue two times transfer, sensor original analog
Signal is digitized in gauge internal, and data signal is switched into analog signalses, is then transferred to by analog quantity interface
PLC, analog signal is translated into digital data transmission to safety supervision system by PLC, and modulus-digital-to-analogue repeatedly turns in the process
Change, its signal accuracy is necessarily reduced.
（3）In order to reduce above-mentioned signal interference distortion problem, Ye You electrical systems integrator integrates weighing system in the industry
To crane complete machine electric-control system（PLC）In conceptual design, but due to the importance of weighing system, if crane mainframe is controlled
There is hardware and software failure in system, and integrated weighing system can be affected, and have a strong impact on complete machine security.
The content of the invention
A kind of distributed large-sized gantry crane that the purpose of the present invention is in view of the shortcomings of the prior art and designed is weighed
System, modularized design and digital data transmission using packet configuration, the electric of crane mainframe is incorporated into by weighing system
System, all using field bus communication between array weighing unit and master instrument unit, and is transmitted, signal by optical fiber
Undistorted, electromagnetism interference is transmitted, safety supervision system can directly gather the weighing system data for once converting data signal, and lifting
Machine host PLC need not increase communication interface conversion module or analog module, and with obtaining, initial data precision is high and system expands
Convenient advantage is opened up, only need to be by new equipment access network, easy configuration is configurable, is provided for large-sized gantry crane security
Important leverage.
The object of the present invention is achieved like this：A kind of distributed large-sized gantry crane weighing system, including crane
PLC main frames, master instrument unit and weighing unit, are characterized in weighing unit for array and respectively by the first photoelectric conversion module
It is connected successively with master instrument unit and crane PLC main frames by field bus communication with the second photoelectric conversion module, it is described
Weighing unit is made up of weighing instrument main frame with several suspension hook weighing sensors and signal transmitting device, each suspension hook weighing sensor
It is connected by corresponding signal transmitting device by optical cable with weighing instrument main frame, weighing instrument main frame is corresponding by optical cable
First photoelectric conversion module is connected；The electric signal of access is converted to after optical signal and passed by optical cable by first photoelectric conversion module
Transport to the second photoelectric conversion module；Second photoelectric conversion module by the optical signal of access be converted to after electric signal by optical cable according to
It is secondary to transmit to master instrument unit and crane PLC main frames.
The weighing unit is that array is the packet configuration carried out according to upper and lower dolly quantity.
The fieldbus communication protocol uses Modbus, DP, DeviceNet, Ethernet or CAN communication protocol.
The field-bus interface of the master instrument unit configuration connection array weighing unit and connection crane PLC master
The DP interface or Ethernet interface of machine.
The present invention has independent operating and enters row data communication, nothing with crane complete machine electric-control system compared with prior art
Long range analog signalses transmission link, transmits data signal, global digital data transmission is undistorted, anti-interference using optical fiber
Performance is good, and safety supervision system can directly gather the weighing system data for once converting data signal, can obtain the data of original precision,
And crane PLC main frames need not increase communication interface conversion module or analog module, a full set of weighing system is autonomous system, its
Operation is not by crane mainframe systematic influence, and reliability is high, and system extension is convenient, only need to simply match somebody with somebody new equipment access network
Put i.e. configurable, system run all right, data transfer is reliable, and engineering cost is low, easy to maintenance, be large-sized gantry crane safety
Property provide important leverage.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is weighing unit structural representation.
Embodiment
Refering to accompanying drawing 1, the present invention is by crane PLC main frames 1, master instrument unit 2, the second photoelectric conversion module 3, first
Photoelectric conversion module 4 and weighing unit 5 are constituted, and weighing unit 5 is for array and respectively by the first photoelectric conversion module 4 and the second light
Electric modular converter 3 is connected with master instrument unit 2 and crane PLC main frames 1 successively by field bus communication；The list of weighing
Member 5 is made up of weighing instrument main frame 51 with several suspension hook weighing sensors 53 and signal transmitting device 52, each suspension hook weighing and sensing
Device 53 is connected by corresponding signal transmitting device 52 by optical cable with weighing instrument main frame 51；The weighing instrument main frame 51 by
The first corresponding photoelectric conversion module 4 of optical cable is connected；First photoelectric conversion module 4 is converted to the electric signal of access
By optical cable transmission to the second photoelectric conversion module 3 after optical signal；Second photoelectric conversion module 3 changes the optical signal of access
To be transmitted successively by optical cable after electric signal to master instrument unit 2 and crane PLC main frames 1；The weighing unit 5 is for array
The packet configuration carried out according to upper and lower dolly quantity；The fieldbus communication protocol using Modbus, DP, DeviceNet,
The communication protocol of Ethernet or CAN；The field-bus interface of the master instrument unit 2 configuration connection array weighing unit 5 with
And the DP interface or Ethernet interface of connection crane PLC main frames 1.
Refering to accompanying drawing 2, the weighing unit 5 is by weighing instrument main frame 51 and several suspension hook weighing sensors 53 and signal
Transmitter 52 is constituted, and each suspension hook weighing sensor 53 passes through optical cable and weighing instrument main frame 51 by its corresponding signal transmitting device 52
Connection；The weighing instrument main frame 51 is connected by the first photoelectric conversion module 4 of the corresponding setting of optical cable.
The present invention is based on fieldbus（Communication link）Distribution use packet configuration and modularized design, it is mainly wrapped
Include：Crane PLC main frames 1, master instrument unit 2, the second photoelectric conversion module 3, the first photoelectric conversion module 4 and weighing unit
5 and fieldbus（Communication link）Part.One small in-car（Upper dolly or lower dolly）One group of weighing unit 5 is configured, it is whole
Machine is according to the dolly quantity of crane come configuration packet quantity, and complete machine configures 2 ~ 3 groups of weighing units.Weighing unit 5 and master control instrument
All using field bus communication between table unit 2, and transmitted by optical fiber, field bus protocol using Modbus, DP,
DeviceNet, Ethernet or CAN communication protocol；It is QCX series to weigh with master instrument, and photoelectric conversion module is TCF-
142-M-SC, its configuration is as follows：
（One）Single group weighing unit is configured
Weighing unit 5 is provided by weighing system professional production business, and weighing unit is mainly weighed by weighing instrument main frame 51, suspension hook
Sensor 53 and signal transmitting device 52 are constituted.Weighing instrument main frame 51, signal transmitting device 52 and suspension hook weighing sensor 53 are all
Small in-car is arranged on, suspension hook weighing sensor 53 is arranged on small in-car suspension hook dynamometry position.Suspension hook weighing sensor 53 is exported
Signal（Generally voltage）The corresponding signal transmitting device 52 of access, signal transmitting device 52 is defeated by cable by weight signal
Enter weighing instrument main frame 51, and the weight signal that weighing unit 5 is gathered is exported by weighing instrument main frame 51.Weighing instrument main frame 51
Pass through fieldbus（Optical fiber）Signal is transferred to the first photoelectric conversion module 4 and the second photoelectricity turn that single group is correspondingly arranged successively
Block 3 is changed the mold, and the signal is transmitted through the fiber to master instrument unit 2 by each second photoelectric conversion module 3.Due to single group
All parts of weighing unit 5 are respectively positioned on car interior, and single channel cable length is respectively less than 20m, wherein, the weighing unit 5 of each single group
In weighing instrument main frame 51, signal transmitting device 52 and suspension hook weighing sensor 53 between analog quantity transmission cable length be less than
15m, so electromagnetic interference causes the distortion distortion of analog signal small.
（Two）Master instrument unit is configured
Master instrument unit 2 is provided by weighing system professional production business, and the configuration field-bus interface of master instrument unit 2 can connect
Connect multigroup weighing unit 5.Master instrument unit 2 provides the data operation processing of all weighing units 5 and weight shows and believed
Number output function, the connection crane PLC of master instrument unit 2 main frames 1 can configure DP interfaces or Ethernet interface.
（Three）Complete machine weighing system is configured
Complete machine weighing system is whole by taking the crane equipped with the upper and lower dolly of separate unit as an example independently of crane mainframe electrical system
The configuration of machine weighing system is main by being arranged on a weighing unit 5 of upper dolly and being arranged on another weighing unit 5, the master of lower dolly
Control instrument pack 2, the second photoelectric conversion module 3, the first photoelectric conversion module 4 and communication link（Optical fiber）Constituted Deng part.
Two weighing units 5 are located at upper and lower small in-car respectively, and master instrument unit 2 is located at drivers' cab, the second photoelectric conversion module 3, first
Photoelectric conversion module 4 and communication link（Optical fiber）All in accordance with need arrangement.The weight output signal of weighing unit 5 is with fieldbus
Communication mode is directly entered master instrument unit 2, is connected when being transmitted due to long range by optical fiber, therefore these signals can be recognized
For loss-free entrance master instrument unit 2, while crane PLC main frames 1 can be directly from master instrument unit 2 with safety supervision system
The data signal of middle collection weighing system.
The present invention is based on fieldbus（Communication link）Distribution use packet configuration and modularized design, be independent title
Weight system, its weighing system is provided by professional production business, and operation is not by crane mainframe systematic influence, and reliability is high.Weigh and be
System professional production business possesses specialty evidence obtaining qualification, so can will be authenticated using the electrical system integrator of the program
Weighing system be directly used in crane mainframe control system without voluntarily collecting evidence again.
Simply the present invention is further illustrated above, and is not used to limit this patent, and all is equivalence enforcement of the present invention,
It is intended to be limited solely by within the right of this patent.
Claims (4)
1. a kind of distributed large-sized gantry crane weighing system, including crane PLC main frames（1）, master instrument unit（2）With
Weighing unit（5）, it is characterised in that weighing unit（5）For array and respectively by the first photoelectric conversion module（4）With the second photoelectricity
Modular converter（3）By field bus communication successively with master instrument unit（2）With crane PLC main frames（1）Connection, it is described to claim
Weight unit（5）By weighing instrument main frame（51）With several suspension hook weighing sensors（53）With signal transmitting device（52）Composition, respectively
Suspension hook weighing sensor（53）By corresponding signal transmitting device（52）Pass through optical cable and weighing instrument main frame（51）Connection, claims
Weight instrument main frame（51）By the first corresponding photoelectric conversion module of optical cable（4）Connection；First photoelectric conversion module（4）
The electric signal of access is converted to after optical signal by optical cable transmission to the second photoelectric conversion module（3）；Second opto-electronic conversion
Module（3）The optical signal of access is converted to after electric signal and transmitted successively to master instrument unit by optical cable（2）With crane PLC
Main frame（1）.
2. distributed large-sized gantry crane weighing system according to claim 1, it is characterised in that the weighing unit（5）
It is the packet configuration carried out according to upper and lower dolly quantity for array.
3. distributed large-sized gantry crane weighing system according to claim 1, it is characterised in that the fieldbus leads to
Believe communication protocol of the agreement using Modbus, DP, DeviceNet, Ethernet or CAN.
4. distributed large-sized gantry crane weighing system according to claim 1, it is characterised in that the master instrument list
Member（2）Configuration connection array weighing unit（5）Field-bus interface and connection crane PLC main frames（1）DP interfaces or
Ethernet interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721380.1A CN107285184A (en) | 2017-08-22 | 2017-08-22 | A kind of distributed large-sized gantry crane weighing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721380.1A CN107285184A (en) | 2017-08-22 | 2017-08-22 | A kind of distributed large-sized gantry crane weighing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107285184A true CN107285184A (en) | 2017-10-24 |
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ID=60106279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721380.1A Pending CN107285184A (en) | 2017-08-22 | 2017-08-22 | A kind of distributed large-sized gantry crane weighing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114044443A (en) * | 2021-11-24 | 2022-02-15 | 武汉船用机械有限责任公司 | Marine crane health detection system based on PLC |
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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 |
| CN105858479A (en) * | 2016-06-08 | 2016-08-17 | 中船第九设计研究院工程有限公司 | Distributed large gantry crane weighing system based on Ethernet |
| CN105883621A (en) * | 2016-06-21 | 2016-08-24 | 中船第九设计研究院工程有限公司 | Distributed weighing system on basis of DP bus for large gantry cranes |
-
2017
- 2017-08-22 CN CN201710721380.1A patent/CN107285184A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105858479A (en) * | 2016-06-08 | 2016-08-17 | 中船第九设计研究院工程有限公司 | Distributed large gantry crane weighing system based on Ethernet |
| CN105883621A (en) * | 2016-06-21 | 2016-08-24 | 中船第九设计研究院工程有限公司 | Distributed weighing system on basis of DP bus for large gantry cranes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114044443A (en) * | 2021-11-24 | 2022-02-15 | 武汉船用机械有限责任公司 | Marine crane health detection system based on PLC |
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| PB01 | Publication | ||
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Application publication date: 20171024 |