CN110386555B - Centralized control system of cable crane - Google Patents
Centralized control system of cable crane Download PDFInfo
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- CN110386555B CN110386555B CN201910747604.5A CN201910747604A CN110386555B CN 110386555 B CN110386555 B CN 110386555B CN 201910747604 A CN201910747604 A CN 201910747604A CN 110386555 B CN110386555 B CN 110386555B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 57
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000010276 construction Methods 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 description 2
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- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
Classifications
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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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- 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
- B66C15/06—Arrangements or use of warning devices
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a centralized control system of a cable crane; the method is characterized in that: the system comprises a weight sensor, a photoelectric encoder, a motor current sensor, a tension sensor, a wind speed sensor, a temperature sensor, a vibration sensor, a limit switch, a signal acquisition module, a data transmission module, a control module and a monitoring host; the system can realize real-time communication of two sides of the cable crane, transmit data and instructions, acquire the current running state of the cable crane and complete automatic control of the cable crane through analysis and calculation of the data and the instructions, and an operator can know various parameters of the cable crane in real time, uniformly control the parameters and improve the working efficiency and the running safety of the cable crane.
Description
Technical Field
The invention relates to the field of crane safety monitoring, in particular to a centralized control system of a cable crane.
Background
Because of possessing the advantages such as high, span of lifting height, cable hoist is widely used in the construction such as highway railway bridge construction, hydropower station construction, simultaneously, cable hoist because the load is changeable, the huge risk factor that exists of structure, the improper operation is very likely to take place the incident, and light then makes equipment parts produce the damage, heavy then causes huge personnel and property loss. When the cable crane is used on a construction site, the traction trolley needs to synchronously operate the winch at two sides, and because the span of the two sides is large, the winch is generally controlled by two operators through communication of interphones, and the working efficiency is low. Therefore, a series of parameters such as the hoisting weight, the travel, the wind speed and the like must be monitored, centralized control is performed on the hoisting at two sides, and the cable crane is ensured to work within the safety limit while the working efficiency is improved.
Disclosure of Invention
Accordingly, in order to address the above-mentioned shortcomings, the present invention herein provides a centralized control system for a cable crane; the system can realize real-time communication of two sides of the cable crane, transmit data and instructions, acquire the current running state of the cable crane and complete automatic control of the cable crane through analysis and calculation of the data and the instructions, and an operator can know various parameters of the cable crane in real time, uniformly control the parameters and improve the working efficiency and the running safety of the cable crane.
The invention is realized in such a way that a centralized control system of a cable crane is constructed, which is characterized in that: the system comprises a weight sensor, a photoelectric encoder, a motor current sensor, a tension sensor, a wind speed sensor, a temperature sensor, a vibration sensor, a limit switch, a signal acquisition module, a data transmission module, a control module and a monitoring host;
The weight sensor measures the weight of the hung object by measuring the tension of a steel wire rope above the lifting hook, converts the acquired weight into a 4-20mA current signal according to a linear relation through the bridge, and outputs the signal to the signal acquisition module through the cable;
The photoelectric encoder is arranged at the end of the lifting reel and on the trolley running traction reel and is directly connected with the main shaft of the motor, and the photoelectric encoder transmits the number of turns and the number of points to the signal acquisition module through 485 signals in real time;
The motor current sensor is arranged in a main loop of the lifting motor and the traction motor, measures the change of the current of the circuit, is connected with the signal acquisition module and outputs a 4-20mA current signal;
The traction force sensor is arranged on the traction cable mechanism and the bearing cable mechanism, outputs 4-20mA current signals according to the linear relation of the traction cable and the tension on the bearing cable, and is connected with the signal acquisition module;
The wind speed sensor is respectively arranged at the tower tops of the two shore cable towers and the middle part of a catwalk of the suspension bridge, outputs 4-20mA signals and is connected with the signal acquisition module;
the temperature sensor is arranged outside the machine shell of the lifting motor and the traction motor, outputs a 4-20mA current signal and is connected with the signal acquisition module;
the vibration sensor is arranged outside the machine shell of the lifting motor and the traction motor, converts vibration parameters into electric signals, and outputs the electric signals through 4-20mA current signals after amplification, and is connected with the signal acquisition module;
the limit switches are arranged on the brake and each door limit, output high and low levels and are connected with the signal acquisition module;
one end of the signal acquisition module is connected with each sensor, and the other end of the signal acquisition module is connected with the data transmission module;
The data transmission modules are respectively arranged on two sides and can mutually receive and send data, and the other ends of the data transmission modules are respectively connected with the monitoring hosts on the two sides to transmit the received data to the monitoring hosts;
the monitoring host adopts a PLC and is connected with the data transmission module and the control module.
The centralized control system of the cable crane is characterized in that: when the monitoring host machine runs, the monitoring host machine receives data sent by the data transmission modules, and the data are mutually transmitted among the data transmission modules, so that the monitoring host machine at any side of the cable crane can receive all data of a construction site, analyze and calculate the data, finally obtain parameter data such as hoisting weight, lifting hook lifting height, running stroke, motor current, cable tension, wind speed, motor temperature, vibration, lifting brake, door limit and the like, display the parameter data on a screen, and further obtain information such as working time and working times of the cable crane, and the like, and the monitoring host machine stores the parameter data while displaying the parameter data on the screen, so that the monitoring host machine is convenient to inquire at any time, and an operator can click on each parameter data to view a curve graph drawn by the parameter data to know the change trend of each parameter; when a certain parameter exceeds a set limit value, the monitoring host can also cut off a control loop, stop the operation of the crane in a dangerous direction, and continue the operation after the fault is removed; the monitoring host at two sides is also provided with different priorities, when the monitoring host operates at a single side, the monitoring host issues a single instruction, the instructions are transmitted to the motors at the opposite sides through the data transmission module when the motors at the same side start to operate, the highest bandwidth of the data transmission module can reach 300Mbps, the starting time difference between the two is in microsecond level, the two shore motors can be ignored, namely, the two shore motors synchronously operate, and the trolley moves under traction; if operators operate motors on the monitoring host at the same time on two sides and conflict, the monitoring host judges the commands with high priority according to different priorities, and displays the commands on the two sides on a screen to remind the operators of communication coordination.
The invention has the following advantages: the invention has the following advantages and positive effects:
(1) The two banks of data are mutually transmitted in real time, centralized control of the cable crane can be realized, the two banks of motors can be synchronously operated only by operating on one side, the traction trolley runs, the monitoring hosts on the two banks are provided with different priorities, and collision is avoided when the two banks are simultaneously operated.
(2) Various sensors are arranged on the bearing parts of the winches and the cable cranes at all positions, and the places which are generally difficult to observe by field operators are monitored, so that the safety of the crane is comprehensively ensured.
(3) The monitoring hosts on the two sides are provided with large-size liquid crystal screens, data acquired by sensors on the cable crane can be displayed in real time, an operator can know the running condition of the cable crane at the first time, and the monitoring hosts can timely send out audible and visual alarms when monitoring dangerous signals to remind the operator.
(4) The data and the instructions are recorded once every 100mS, the data required by the reference can be called at any time, various charts can be generated, and the change trend of various data can be intuitively sensed.
Drawings
Fig. 1 is a schematic structural diagram of the present utility cable crane centralized control system.
Wherein: the system comprises a weight sensor 1, a photoelectric encoder 2, a motor current sensor 3, a tension sensor 4, a wind speed sensor 5, a temperature sensor 6, a vibration sensor 7, a limit switch 8, a signal acquisition module 9, a data transmission module 10, a control module 11 and a monitoring host 12.
Detailed Description
The following detailed description of the present invention will be provided with reference to fig. 1, in which the technical solutions of the embodiments of the present invention are clearly and completely described, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a centralized control system of a cable crane by improving the system, and the structure of the system is shown in figure 1; the system comprises a weight sensor 1, a photoelectric encoder 2, a motor current sensor 3, a tension sensor 4, a wind speed sensor 5, a temperature sensor 6, a vibration sensor 7, a limit switch 8, a signal acquisition module 9, a data transmission module 10, a control module 11 and a monitoring host 12.
The weight sensor 1 measures the weight of the hung object by measuring the tension of a steel wire rope above the lifting hook, converts the collected weight into a 4-20mA current signal according to a linear relation through a bridge, and outputs the signal to the signal collecting module 9 through a cable.
The photoelectric encoder 2 is arranged at the lifting reel end and on the trolley running traction reel and is directly connected with the main shaft of the motor, so that the rotating speed of the photoelectric encoder 2 is completely consistent with that of the motor. The photoelectric encoder 2 transmits the number of turns and the number of points to the signal acquisition module 9 in real time through 485 signals, and the running number of turns and the rotating speed of the motor can be calculated through the data, so that the running stroke and the running speed of the cable crane trolley and the height and the speed of the lifting hook falling hook can be obtained.
The motor current sensor 3 is arranged in a main loop of the lifting motor and the traction motor, measures the change of the current of a circuit, is connected with the signal acquisition module 9, and outputs a 4-20mA current signal. The running condition and the output power of the motor can be reflected by measuring the circuit current, so that an operator can conveniently and well adjust the working state of the motor.
The tension sensor 4 is arranged on the traction cable mechanism and the bearing cable mechanism, outputs 4-20mA current signals according to the linear relation of the tension on the traction cable and the bearing cable, and is connected with the signal acquisition module 9.
The wind speed sensor 5 is respectively arranged at the tower tops of the two shore cable towers and the middle part of a catwalk of the suspension bridge, outputs 4-20mA signals and is connected with the signal acquisition module 9. And judging whether the site meets the construction conditions or not according to the data, and determining whether the equipment can be started or not.
The temperature sensor 6 is arranged outside the shell of the lifting motor and the traction motor, outputs a 4-20mA current signal and is connected with the signal acquisition module 9. The data collected by the temperature sensor 6 and the current in the motor circuit synchronously judge the running condition of the motor and play a role in overheat protection.
The vibration sensor 7 is arranged outside the machine shell of the lifting motor and the traction motor, converts vibration parameters into electric signals, and outputs the electric signals through 4-20mA current signals after amplification, and is connected with the signal acquisition module 9. The vibration parameter may reflect electrical defects, fastener loosening, unbalance, or other anomalies in the motor.
The limit switch 8 is arranged on the brake and each door limit, outputs high and low levels and is connected with the signal acquisition module 9. Limit switches on the brake can reflect lifting braking states, and door limit can reflect opening and closing information of each safety limit switch.
One end of the signal acquisition module 9 is connected with each sensor, and the other end is connected with the data transmission module 10. The signals of the sensors are collected in real time, the analog signals are converted into digital signals through amplification, and data are sent to the data transmission module 10 according to a certain format every 100 ms.
The data transmission modules 10 are respectively installed on two sides and can mutually receive and send data, and the other ends of the data transmission modules are respectively connected with the monitoring hosts on the two sides to transmit the received data to the monitoring hosts.
The control module 11 is connected to the control loop of each motor, receives a control command from the host, and controls the start and stop of the motors.
The monitoring host 12 adopts a PLC and is connected with the data transmission module 10 and the control module 11. The monitoring host 12 receives the data sent by the data transmission module 10, and the data are mutually transmitted among the data transmission modules 10, so that the monitoring host on any side of the cable crane can receive all the data of the construction site, analyze and calculate the received data, finally obtain parameter data such as hoisting weight, lifting hook lifting height, running stroke, motor current, cable tension, wind speed, motor temperature, vibration, lifting brake, door limit and the like, display the parameter data on a screen, and further obtain information such as the working time and the operating instruction of the cable crane, and the like through the parameter data, store various information on the screen while the host displays the various information, so that the monitoring host is convenient to inquire at any time, and an operator can click on various data to view curve graphs drawn by the data to know the variation trend of various parameters. When a certain parameter exceeds a set limit value, the monitoring host can cut off the control loop, stop the operation of the crane in the dangerous direction, and continue the operation after the fault is removed. The two-bank monitoring host 12 is also provided with different priorities, when the monitoring host operates on one side, the monitoring host issues a single instruction, the instruction is transmitted to the opposite-bank motor through the data transmission module 10 when the motors on the same side start to operate, the highest bandwidth of the data transmission module can reach 300Mbps, the starting time difference of the two motors is in microsecond level, the starting time difference is negligible, namely, the two-bank motors synchronously operate, and the trolley moves under traction. If operators operate motors on the monitoring host at the same time on two sides and conflict, the monitoring host judges the commands with high priority according to different priorities, and displays the commands on the two sides on a screen to remind the operators of communication coordination.
The invention has the following advantages and positive effects:
(1) The two banks of data are mutually transmitted in real time, centralized control of the cable crane can be realized, the two banks of motors can be synchronously operated only by operating on one side, the traction trolley runs, the monitoring hosts on the two banks are provided with different priorities, and collision is avoided when the two banks are simultaneously operated.
(2) Various sensors are arranged on the bearing parts of the winches and the cable cranes at all positions, and the places which are generally difficult to observe by field operators are monitored, so that the safety of the crane is comprehensively ensured.
(3) The monitoring hosts on the two sides are provided with large-size liquid crystal screens, data acquired by sensors on the cable crane can be displayed in real time, an operator can know the running condition of the cable crane at the first time, and the monitoring hosts can timely send out audible and visual alarms when monitoring dangerous signals to remind the operator.
(4) The data and the instructions are recorded once every 100mS, the data required by the reference can be called at any time, various charts can be generated, and the change trend of various data can be intuitively sensed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A cable crane centralized control system is characterized in that: the system comprises a weight sensor (1), a photoelectric encoder (2), a motor current sensor (3), a tension sensor (4), a wind speed sensor (5), a temperature sensor (6), a vibration sensor (7), a limit switch (8), a signal acquisition module (9), a data transmission module (10), a control module (11) and a monitoring host (12);
The weight sensor (1) measures the weight of a hung object by measuring the tension of a steel wire rope above the lifting hook, converts the acquired weight into a 4-20mA current signal according to a linear relation through the bridge, and outputs the signal to the signal acquisition module (9) through a cable;
The photoelectric encoder (2) is arranged at the end of the lifting reel and on the trolley running traction reel and is directly connected with the main shaft of the motor, and the photoelectric encoder (2) transmits the number of turns and the number of points to the signal acquisition module (9) through 485 signals in real time;
The motor current sensor (3) is arranged in a main loop of the lifting motor and the traction motor, measures the change of the current of a circuit, is connected with the signal acquisition module (9) and outputs a 4-20mA current signal;
the traction force sensor (4) is arranged on the traction cable mechanism and the bearing cable mechanism, outputs 4-20mA current signals according to the linear relation of the traction cable and the tension on the bearing cable, and is connected with the signal acquisition module (9);
The wind speed sensor (5) is respectively arranged at the tower tops of the two shore cable towers and the middle part of a catwalk of the suspension bridge, outputs 4-20mA signals and is connected with the signal acquisition module (9);
The temperature sensor (6) is arranged outside the shell of the lifting motor and the traction motor, outputs a 4-20mA current signal and is connected with the signal acquisition module (9);
The vibration sensor (7) is arranged outside the shell of the lifting motor and the traction motor, converts vibration parameters into electric signals, and outputs the electric signals through 4-20mA current signals after amplification, and is connected with the signal acquisition module (9);
The limit switch (8) is arranged on the brake and each door limit, outputs high and low levels and is connected with the signal acquisition module (9);
one end of the signal acquisition module (9) is connected with each sensor, and the other end is connected with the data transmission module (10);
The data transmission modules (10) are respectively arranged on two sides and can mutually receive and send data, the data transmission modules (10) are respectively connected with the monitoring hosts (12) on the two sides, and the received data are transmitted to the monitoring hosts;
The monitoring host (12) adopts a PLC and is connected with the data transmission module (10) and the control module (11);
When the cable crane centralized control system operates, the monitoring host (12) receives data sent by the data transmission module (10), the data are mutually transmitted among the data transmission modules (10), so that the monitoring host (12) at any side of the cable crane can receive all data of a construction site, the monitoring host (12) analyzes and calculates the received data, finally acquires hoisting, lifting height, operation stroke, motor current, cable tension, wind speed, motor temperature, vibration, lifting brake and threshold position parameter data, and displays the data on a screen, in addition, through the parameter data, operation instructions of the cable crane working time and working times can be acquired, the monitoring host (12) stores the parameter data while displaying the screen, so that the monitoring host can conveniently inquire at any time, an operator can also click on each parameter data to view a curve graph drawn by the parameter data, and know the change trend of each parameter data; when one of the parameter data exceeds the set limit value, the monitoring host (12) cuts off the control loop, stops the operation of the crane in the dangerous direction, and can continue the operation after the fault is removed; the two-bank monitoring host (12) is also provided with different priorities, when the monitoring host operates on one side, the monitoring host gives a single instruction, the instructions are transmitted to the opposite-bank motor through the data transmission module (10) when the motors on the same side start to operate, the highest bandwidth of the data transmission module can reach 300Mbps, the starting time difference of the two monitoring host and the data transmission module is in microsecond level, the two monitoring host can be ignored, namely, the two monitoring host synchronously operates, and the trolley moves under traction; if operators operate motors on the monitoring host at the same time on two sides and conflict, the monitoring host judges the commands with high priority according to different priorities, and displays the commands on the two sides on a screen to remind the operators of communication coordination.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747604.5A CN110386555B (en) | 2019-08-14 | 2019-08-14 | Centralized control system of cable crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910747604.5A CN110386555B (en) | 2019-08-14 | 2019-08-14 | Centralized control system of cable crane |
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| CN110386555B true CN110386555B (en) | 2024-08-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111580429A (en) * | 2020-05-07 | 2020-08-25 | 武汉理工大学 | Internet of things terminal data acquisition device and monitoring method suitable for shore power system |
| CN112141889B (en) * | 2020-08-14 | 2023-07-18 | 湖南省中南桥梁安装工程有限公司 | Blind hoisting system and method for hoisting member of cable crane |
| CN112661014A (en) * | 2020-12-20 | 2021-04-16 | 河南五建建设集团有限公司 | Multifunctional bridge floor crane |
| CN113194284B (en) * | 2021-04-16 | 2023-11-03 | 深圳市艾赛克科技有限公司 | Intelligent monitoring system and method for tower crane |
| CN118392880B (en) * | 2024-07-01 | 2024-08-30 | 四川路桥华东建设有限责任公司 | Road and bridge safety detection device and detection method thereof |
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| CN210457225U (en) * | 2019-08-14 | 2020-05-05 | 四川路桥华东建设有限责任公司 | Centralized control system of cable crane |
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| FR481801A (en) * | 1916-05-19 | 1917-01-23 | Warren Travell | Lifting and transport device, combined |
| JP2912916B1 (en) * | 1998-06-29 | 1999-06-28 | 石川島播磨重工業株式会社 | Cable crane steady rest device |
| CN102963827B (en) * | 2012-11-02 | 2015-07-01 | 宜昌市创星电子技术发展有限公司 | Tower crane safety management system |
| CN203319561U (en) * | 2013-07-05 | 2013-12-04 | 武桥重工集团股份有限公司 | Cable crane electric control system based on two-bank control |
| CN207175264U (en) * | 2017-09-19 | 2018-04-03 | 开封市志恒电子科技有限公司 | A kind of gate-type lifting appliance freight weight limit system based on CAN |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210457225U (en) * | 2019-08-14 | 2020-05-05 | 四川路桥华东建设有限责任公司 | Centralized control system of cable crane |
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