CN210457225U - Centralized control system of cable crane - Google Patents
Centralized control system of cable crane Download PDFInfo
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- CN210457225U CN210457225U CN201921312966.3U CN201921312966U CN210457225U CN 210457225 U CN210457225 U CN 210457225U CN 201921312966 U CN201921312966 U CN 201921312966U CN 210457225 U CN210457225 U CN 210457225U
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Abstract
The utility model 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, an air 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 between two sides of the cable crane, transmit data and instructions, acquire the current running state of the cable crane and complete the automatic control of the cable crane through the analysis and calculation of the data and the instructions, and an operator can know various parameters of the cable crane in real time and perform unified control, thereby improving the working efficiency and the running safety of the cable crane.
Description
Technical Field
The utility model relates to a hoist safety monitoring field, particularly, relate to a cable loop wheel machine centralized control system.
Background
Because of possessing advantages such as the rise height is big, the span is big, and cable crane is widely used in the construction of aspects such as highway railway bridge construction, hydropower station construction, simultaneously, and cable crane is because the load is changeable, the huge risk factor that exists of structure, and the accident is probably taken place to improper operation extremely, makes equipment part produce the damage lightly, then causes huge personnel and property loss. When cable loop wheel machine used at the job site now, the hoist synchronous operation that the traction dolly needs the both sides because of the both sides span is big, generally communicates the control of accomplishing the hoist through the intercom by two operators, and work efficiency is not high. Therefore, a series of parameters such as the hoisting weight, the stroke and the wind speed must be monitored, and winches on two sides are controlled in a centralized manner, so that the working efficiency is improved and the cable crane is guaranteed to work within a safety limit.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a centralized control system for a cable crane; the system can realize real-time communication between two sides of the cable crane, transmit data and instructions, acquire the current running state of the cable crane and complete the automatic control of the cable crane through the analysis and calculation of the data and the instructions, and an operator can know various parameters of the cable crane in real time and perform unified control, thereby improving the working efficiency and the running safety of the cable crane.
The utility model discloses a realize like this, construct a cable loop wheel machine centralized control system, its characterized in that: the system comprises a weight sensor, a photoelectric encoder, a motor current sensor, a tension sensor, an air 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 a hung object by measuring the tension of a steel wire rope above a lifting hook, converts the collected weight into a 4-20mA current signal according to a linear relation through an electric bridge, and outputs the current signal to the signal collection module through a cable;
the photoelectric encoder is arranged at the end of the lifting winding drum and on the trolley running traction winding drum and is directly connected with a main shaft of the motor, and the photoelectric encoder transmits the number of rotating turns and points to the signal acquisition module through 485 signals in real time;
the motor current sensor is arranged in a main loop of a lifting motor and a traction motor, measures the current change of a circuit, is connected with the signal acquisition module and outputs a 4-20ma current signal;
wherein the tension sensor is arranged on the traction cable mechanism and the bearing cable mechanism, outputs 4-20ma current signals according to the tension on the traction cable and the bearing cable in a linear relationship, and is connected with the signal acquisition module;
the wind speed sensors are respectively arranged at the tops of the cable towers at the two banks and the middle part of a catwalk of the suspension bridge, output 4-20ma signals and are connected with the signal acquisition module;
the temperature sensor is arranged outside the shell of the lifting motor and the traction motor, outputs 4-20ma current signals and is connected with the signal acquisition module;
the vibration sensor is arranged outside the shells of the lifting motor and the traction motor, converts vibration parameters into electric signals, amplifies the electric signals and finally outputs the electric signals by 4-20ma current signals, 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 banks and can mutually receive and send data, and the other ends of the data transmission modules are respectively connected with monitoring hosts on the two banks and transmit the received data to the monitoring hosts;
the monitoring host adopts PLC, and is connected with the data transmission module and the control module.
The utility model has the advantages of as follows: the utility model has the advantages of it is following and positive effect:
(1) the data of both sides are transmitted mutually in real time, can realize cable loop wheel machine's centralized control, only need operate in one side and can make both sides motor synchronous operation, the tractor walking, and the monitoring host computer of both sides sets up different priorities, avoids the conflict to take place when the simultaneous operation of both sides.
(2) Various sensors are arranged on the bearing parts of the winches and the cable cranes, and the field operators can monitor places which are difficult to observe, so that the safety of the crane is comprehensively guaranteed.
(3) The monitoring host computers at the two banks are provided with large-size liquid crystal screens, so that data collected by sensors at all positions of the cable crane can be displayed in real time, an operator can know the operation condition of the cable crane in the first time, and the monitoring host computers can timely send out sound and light alarm when monitoring danger signals to remind the operator.
(4) Data and instructions are recorded once every 100mS, required data can be called and looked up at any time, meanwhile, various charts can be generated, and various data change trends can be intuitively sensed.
Drawings
Fig. 1 is a schematic structural view of a centralized control system of a cable crane according to the present invention.
Wherein: the wind power generation 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 present invention will be described in detail with reference to the accompanying fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a cable crane centralized control system through the improvement, the structure of the system is as 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 the steel wire rope above the lifting hook, converts the collected weight into a 4-20mA current signal according to a linear relation through the electric bridge, and outputs the current signal to the signal collection module 9 through a cable.
The photoelectric encoder 2 is arranged at the end of the lifting reel and on the traction reel for the trolley to run and is directly connected with a main shaft of the motor, so that the rotating speed of the photoelectric encoder 2 is completely consistent with that of the motor. The number of turns and the number of points of rotation of the photoelectric encoder 2 are transmitted to the signal acquisition module 9 through 485 signals in real time, the number of turns and the rotating speed of the motor can be calculated through the data, and then the running stroke and the 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 a lifting motor and a traction motor, measures the current change of a circuit, is connected with the signal acquisition module 9 and outputs 4-20ma current signals. The operation condition and the output power of the motor can be reflected by measuring the circuit current, and the operating personnel can adjust the working state of the motor better.
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 sensors 5 are respectively arranged at the tops of the cable towers at the two banks and the middle part of the catwalk of the suspension bridge, output 4-20ma signals and are connected with the signal acquisition module 9. Whether the site meets the construction conditions or not is judged according to the data, and whether the equipment can be started or not is determined.
The temperature sensor 6 is arranged outside the shell of the lifting motor and the traction motor, outputs 4-20ma current signals 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 state of the motor and play a role in overheat protection.
The vibration sensor 7 is installed outside the casings of the lifting motor and the traction motor, converts vibration parameters into electric signals, amplifies the electric signals, outputs the electric signals by 4-20ma current signals and is connected with the signal acquisition module 9. The vibration parameters may reflect electrical defects, fastener loosening, imbalance, or other anomalies in the motor.
Wherein, the limit switch 8 is arranged on the brake and each door is limited, outputs high and low levels and is connected with the signal acquisition module 9. The limit switch on the brake can reflect the lifting brake state, and the door limit can reflect the 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 each sensor are collected in real time, each analog signal is converted into a digital signal through amplification, and the data is sent to the data transmission module 10 according to a certain format every 100 ms.
The data transmission modules 10 are respectively installed on both banks and can mutually receive and transmit data, and the other ends of the data transmission modules are respectively connected with monitoring hosts on both banks and 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 motor.
The monitoring host 12, which is a PLC, is connected to the data transmission module 10 and the control module 11. The monitoring host 12 receives the data sent by the data module 10, and the data are transmitted among the data modules 10, so that the monitoring host on any side of the cable crane can receive all signals of a construction site, analyze and calculate the data, finally obtain parameters such as the hoisting weight, the hoisting height of a lifting hook, the running stroke, the motor current, the cable tension, the wind speed, the motor temperature, vibration, the hoisting brake, door limit and the like, and display the parameters on a screen. When a certain parameter exceeds a set limit value, the monitoring host can also cut off the control loop, stop the crane to work in the dangerous direction, and continue to work after the fault is eliminated. The two-bank monitoring host 10 is also provided with different priorities, when the monitoring host operates on one side, a single command is issued from the monitoring host, the command is transmitted to the opposite-bank motor through the data transmission module 10 when the motor on the same side starts to operate, the highest bandwidth of the data transmission module can reach 300Mbps, the difference of the starting time of the two motors is in the microsecond level and can be ignored, namely, the motors on the two banks operate synchronously, and the trolley moves under traction. If the two banks operate the motor on the monitoring host at the same time and an operator conflicts, the monitoring host finishes the command with high priority after judging according to different priorities, and displays the commands of the two banks on a screen to remind the operator to carry out communication coordination.
The utility model has the advantages of it is following and positive effect:
(1) the data of both sides are transmitted mutually in real time, can realize cable loop wheel machine's centralized control, only need operate in one side and can make both sides motor synchronous operation, the tractor walking, and the monitoring host computer of both sides sets up different priorities, avoids the conflict to take place when the simultaneous operation of both sides.
(2) Various sensors are arranged on the bearing parts of the winches and the cable cranes, and the field operators can monitor places which are difficult to observe, so that the safety of the crane is comprehensively guaranteed.
(3) The monitoring host computers at the two banks are provided with large-size liquid crystal screens, so that data collected by sensors at all positions of the cable crane can be displayed in real time, an operator can know the operation condition of the cable crane in the first time, and the monitoring host computers can timely send out sound and light alarm when monitoring danger signals to remind the operator.
(4) Data and instructions are recorded once every 100mS, required data can be called and looked up at any time, meanwhile, various charts can be generated, and various data change trends 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. The utility model provides a cable loop wheel machine centralized control system which 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 a lifting hook, converts the collected weight into a 4-20mA current signal according to a linear relation through an electric bridge, and outputs the current signal to the signal collection module (9) through a cable;
the photoelectric encoder (2) is arranged on the end of the lifting winding drum and the trolley running traction winding drum and is directly connected with a main shaft of the motor, and the number of rotating turns and points of the photoelectric encoder (2) are transmitted to the signal acquisition module (9) through 485 signals in real time;
the motor current sensor (3) is arranged in a main loop of a lifting motor and a traction motor, measures the current change of a circuit, is connected with the signal acquisition module (9), and outputs a 4-20ma current signal;
wherein the tension sensor (4) is arranged on the traction cable mechanism and the bearing cable mechanism, outputs 4-20ma current signals according to the tension on the traction cable and the bearing cable in a linear relationship, and is connected with the signal acquisition module (9);
wherein, the wind speed sensors (5) are respectively arranged at the tops of the cable towers at two banks and the middle part of the catwalk of the suspension bridge, output 4-20ma signals and are 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 4-20ma current signals 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, amplifies the electric signals and finally outputs the electric signals by 4-20ma current signals, and is connected with the signal acquisition module (9);
the limit switches (8) are arranged on the brake and each door limit, output high and low levels and are connected with the signal acquisition module (9);
one end of the signal acquisition module (9) is connected with each sensor, and the other end of the signal acquisition module is connected with the data transmission module (10);
the data transmission modules (10) are respectively arranged on two banks and can mutually receive and send data, and the other ends of the data transmission modules are respectively connected with monitoring hosts (12) on the two banks and transmit the received data 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312966.3U CN210457225U (en) | 2019-08-14 | 2019-08-14 | Centralized control system of cable crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312966.3U CN210457225U (en) | 2019-08-14 | 2019-08-14 | Centralized control system of cable crane |
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| Publication Number | Publication Date |
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| CN210457225U true CN210457225U (en) | 2020-05-05 |
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| CN201921312966.3U Active CN210457225U (en) | 2019-08-14 | 2019-08-14 | Centralized control system of cable crane |
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| CN (1) | CN210457225U (en) |
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- 2019-08-14 CN CN201921312966.3U patent/CN210457225U/en active Active
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