Anti-falling intelligent control system for goods elevator

Abstract

The invention relates to the technical field of intelligent control systems, and discloses a goods elevator anti-falling intelligent control system which comprises an intelligent control center, the output end of an intelligent control platform is in signal connection with a monitoring module, the output end of the intelligent control platform is in signal connection with a driving module, and the output end of the intelligent control platform is in signal connection with a communication module. The output end of the intelligent control platform is in signal connection with a goods elevator control unit, a goods elevator monitoring unit and an early warning unit are arranged, a chain tension sensor in the goods elevator monitoring unit is used for monitoring the tension of a chain connected with the goods elevator, when the tension is too large and reaches a set threshold value, the goods elevator is controlled to stop in time, and when the tension changes suddenly, the anti-falling structure is triggered in time to prevent falling of the goods elevator. The anti-falling structure of the goods elevator is triggered in an active triggering mode, the problem that the anti-falling structure of the goods elevator is triggered too slowly is solved, and due to the fact that the goods elevator does not fall at the moment, kinetic energy of falling of the goods elevator is not increased rapidly, and the connection position of the anti-falling structure and the goods elevator cannot be disconnected.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent control systems, and in particular to an intelligent control system for preventing a freight elevator from falling. Background Art

[0002] Freight elevators are important cargo lifting and transfer equipment between floors in industrial production. In order to save costs, many simple freight elevators or lifting platforms have appeared. Freight elevators are mainly used for lifting and transferring goods. They have a greater load-bearing capacity, but the impact of falling is greater. In order to prevent the freight elevator from falling, anti-fall devices are generally installed on the freight elevator. However, these anti-fall devices are passively triggered, that is, they are triggered to prevent falling when the freight elevator falls. The weight of the freight elevator after loading is too large, and its running direction after falling is downward. At this time, the triggering of the anti-fall structure needs to overcome the kinetic energy of the freight elevator when it falls, and the load-bearing strength of the anti-fall structure is required to be relatively large. When the anti-fall structure is triggered too slowly, the kinetic energy of the freight elevator falling will increase sharply. At this time, if the anti-fall structure is triggered again, it is easy to cause problems such as disconnection between the anti-fall structure and the freight elevator. Summary of the invention

[0003] The purpose of the present invention is to provide an intelligent control system for preventing a freight elevator from falling, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an intelligent control system for preventing freight elevators from falling, including a smart control center, the output signal of the smart control platform is connected to a monitoring module, the output signal of the smart control platform is connected to a driving module, the output signal of the smart control platform is connected to a communication module, the output signal of the smart control platform is connected to a freight elevator control unit, the output signal of the smart control platform is connected to a freight elevator monitoring unit, the output signal of the smart control platform is connected to a warning unit, and the output signal of the smart control platform is connected to an alarm unit.

[0005] According to the above technical solution, the freight elevator control unit includes a PLC control module and a remote control module.

[0006] According to the above technical solution, the output end signals of the PLC control module and the remote control module are connected with internal command signals, external call signals, door opening and closing signals, floor displays, elevator call signal displays, running direction indications, and door opening and closing controls.

[0007] According to the above technical solution, the freight elevator monitoring unit includes a comprehensive monitoring unit and a comprehensive power supply module, and the comprehensive monitoring unit includes a sensor module and a camera module.

[0008] According to the above technical solution, the sensor module includes a human body sensor and a chain tension sensor, and the camera module includes a machine room camera, a camera inside the freight elevator, and a camera at the bottom of the freight elevator. The input ends of the human body sensor, chain tension sensor, machine room camera, camera inside the freight elevator, and camera at the bottom of the freight elevator are all connected to the signal of the integrated power supply module.

[0009] According to the above technical solution, the early warning unit includes an upload module, the input end signal of the upload module is connected to the judgment module, the input end signal of the judgment module is connected to the freight elevator load-bearing monitor and the freight elevator operation rate monitor, and the input end signals of the freight elevator load-bearing monitor and the freight elevator operation rate monitor are connected to the remote lifting module.

[0010] According to the above technical solution, the alarm unit includes an information update module, the output signal of the information update module is connected to the information processing module, the output signal of the information processing module is connected to the intelligent generation module, the output signal of the intelligent generation module is connected to the data transceiver module, and the output signal of the data transceiver module is connected to the manual switching module.

[0011] According to the above technical solution, the human body sensor in the freight elevator monitoring unit is arranged inside the freight elevator, the chain tension sensor is arranged around the top chain of the freight elevator, the machine room camera is arranged in the machine room, and the freight elevator driving equipment and the power supply storage are monitored, the internal camera of the freight elevator is arranged inside the freight elevator, and the cargo inside the freight elevator is monitored, and the bottom camera of the freight elevator is arranged at the bottom of the freight elevator to monitor the bottom of the freight elevator.

[0012] According to the above technical solution, the upload module and the remote lifting module are connected to the communication module signal.

[0013] According to the above technical solution, the information advancement unit is connected to the communication module signal, and the manual switching module is connected to the driving module signal.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention is provided with a freight elevator monitoring unit and an early warning unit, and a chain tension sensor in the freight elevator monitoring unit is used to monitor the tension of the chain connected to the freight elevator. When the tension is too large and reaches a set threshold, the freight elevator is promptly controlled to stop, and when the tension suddenly changes, the anti-falling structure is promptly triggered. The anti-falling structure of the freight elevator is triggered in an active triggering manner, thereby avoiding the problem of the anti-falling structure of the freight elevator being triggered too slowly. Moreover, because the freight elevator has not fallen down at this time, the kinetic energy of the freight elevator falling down has not increased rapidly, and the anti-falling structure will not be disconnected from the connection between the freight elevator and the anti-falling structure; 2. The present invention monitors the driving device and power bank of the freight elevator through the camera in the machine room, and monitors the driving device intuitively. Most of the reasons for the fall of freight elevators are the failure of the driving device. Therefore, the driving device of the freight elevator is monitored to ensure that there is no problem with the monitoring device during the operation of the freight elevator; 3. The present invention, by setting a freight elevator running speed monitor, monitors the speed of the freight elevator during the lifting process, to avoid excessive tension on the chain when the freight elevator stops suddenly, which causes the limit structure in the driving device to fail. When the freight elevator falls, its speed will change rapidly. The freight elevator running speed monitor monitors the rapid change of the freight elevator running speed, and can trigger the anti-falling structure in time, that is, the anti-falling structure is triggered in the early stage of the downward pursuit (before the freight elevator moves downward), reducing the impact of the kinetic energy of the freight elevator falling on the anti-falling structure; 4. The present invention processes the alarm information by setting an information processing module in the alarm unit, and is used to prevent false touches of the alarm information triggered when the freight elevator is under maintenance or during no-load trial operation. That is, in the above cases, the alarm information is stopped from being sent to the control terminal, so as to avoid the control terminal sending an emergency processing signal to the PLC control unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 is a system block diagram of the present invention; Figure 2 is a schematic diagram of a freight elevator control unit of the present invention; Figure 3 is a schematic diagram of a freight elevator monitoring unit of the present invention; Figure 4 is a schematic diagram of an early warning unit of the present invention; Figure 5 It is a schematic diagram of the alarm unit of the present invention.

[0016] In the figure: 1. Monitoring module; 2. Driving module; 3. Communication module; 4. Freight elevator control unit; 5. Freight elevator monitoring unit; 6. Early warning unit; 7. Alarm unit. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] A preferred embodiment of the intelligent control system for preventing a freight elevator from falling provided by the present invention is as follows: Figures 1 to 5As shown: the freight elevator anti-fall intelligent control system includes a smart control center, the output end signal of the smart control platform is connected to the monitoring module 1, the output end signal of the smart control platform is connected to the driving module 2, the output end signal of the smart control platform is connected to the communication module 3, the output end signal of the smart control platform is connected to the freight elevator control unit 4, the freight elevator control unit 4 includes a PLC control module and a remote control module, the lifting and switching of the freight elevator are controlled by the PLC control module, and the remote control module is set to remotely control emergency operations such as emergency stop and emergency door opening of the freight elevator, the output end signal of the smart control platform is connected to the freight elevator monitoring unit 5, the freight elevator monitoring unit 5 includes a comprehensive monitoring unit and a comprehensive power supply module, and the comprehensive monitoring unit performs The integrated monitoring unit is used to monitor the main sending position of the cause of the freight elevator falling. The integrated power supply module provides power to the integrated monitoring unit, and the integrated power supply unit and the power system of the freight elevator adopt different transmission lines. The integrated monitoring unit includes a sensor module and a camera module. The sensor module includes a human body sensor and a chain tension sensor. The camera module includes a machine room camera, a camera inside the freight elevator, and a camera at the bottom of the freight elevator. The input ends of the human body sensor, the chain tension sensor, the machine room camera, the camera inside the freight elevator, and the camera at the bottom of the freight elevator are all connected to the integrated power supply module signal. The human body sensor in the freight elevator monitoring unit 5 is set inside the freight elevator. After the freight elevator is closed, the interior of the freight elevator is monitored to avoid people and goods riding the freight elevator together. When people riding on a freight elevator fall, casualties are caused. Chain tension sensors are installed around the chain at the top of the freight elevator to monitor the chain used to connect the elevator to rise and fall. The tension on the chain is significantly greater than the weight of the elevator and the goods in the elevator when the elevator is running up and down. The fall of the freight elevator is often most directly reflected on the chain. When the tension on the chain is too large, it is easy to cause damage to the chain. When the chain pulls the freight elevator up, the tension on the chain will be greater than the tension when the freight elevator is stationary. Therefore, compared with directly monitoring the weight of the goods in the freight elevator, directly monitoring the tension on the chain can intuitively obtain the changes in the dynamics of the freight elevator when it is running. The camera in the machine room is installed in the machine room, and the elevator drive equipment and power bank are monitored. The drive equipment is intuitively monitored, and most of them The reason for the fall of the freight elevator is the failure of the driving device. Therefore, the driving device of the freight elevator is monitored to ensure that there is no problem with the monitoring device during the operation of the freight elevator. The internal camera of the freight elevator is set inside the freight elevator to monitor the goods inside the freight elevator to avoid the goods from tipping over during transportation, resulting in collision between the goods and the freight elevator, which causes the force on the chain of the freight elevator to suddenly increase. That is, when the goods are found to have a tendency to tip over, the freight elevator operator is promptly reminded to stop the freight elevator and readjust the goods. The camera at the bottom of the freight elevator is set at the bottom of the freight elevator to monitor the bottom of the freight elevator, mainly to see whether there are people standing under the freight elevator during the operation of the freight elevator. The output signal of the intelligent control platform is connected to the early warning unit 6, and the early warning unit 6 includes an upload module. The input signal of the upload module is connected to the judgment module.The input signal of the judgment module is connected to the freight elevator load-bearing monitor and the freight elevator operation rate monitor. The input signals of the freight elevator load-bearing monitor and the freight elevator operation rate monitor are connected to the remote lifting module. The warning information is transmitted to the intelligent control platform, that is, the control device terminal, through the upload module, to promptly remind the freight elevator operator to adjust the freight elevator operation. The judgment module is used to judge whether the warning information sent by the freight elevator monitoring unit reaches the set threshold (the warning information is mainly the information monitored by the human body sensor and the chain tension sensor), set the freight elevator load-bearing monitor, monitor the weight of the goods when placing the goods on the freight elevator, remind the freight elevator user when overweight, and upload the relevant information through the upload module Upload to the smart control platform, and send instructions to the PLC control unit through the smart control platform to prohibit closing the freight elevator door and starting the freight elevator. The freight elevator operation rate monitor monitors the rate of the freight elevator during the lifting process to avoid excessive tension on the chain when the freight elevator stops suddenly, which may cause the limit structure in the drive device to fail. When the freight elevator falls, its rate will change rapidly. The freight elevator operation rate monitor monitors the rapid change in the freight elevator operation rate, which can trigger the anti-fall structure in time, that is, the anti-fall structure is triggered in the early stage of the downward pursuit (before the freight elevator moves downward) to reduce the impact of the kinetic energy of the freight elevator falling on the anti-fall structure. The remote prompt module mainly prompts for overweight freight elevators and freight When the running speed of the elevator changes rapidly, the control terminal sends relevant prompt information to the freight elevator operation panel. The output signal of the intelligent control platform is connected to the alarm unit 7. The alarm unit 7 includes an information update module to update the alarm information. When the freight elevator falls, an alarm information is sent to the control panel and the control terminal. The output signal of the information update module is connected to the information processing module to process the alarm information. It is used to prevent the alarm information triggered during the maintenance of the freight elevator and the no-load trial operation from being accidentally touched. That is, in the above case, the alarm information is stopped from being sent to the control terminal to avoid the control terminal sending an emergency processing signal to the PLC control unit (forbidding the start of the freight elevator, forbidding the shutdown of the freight elevator). The output signal of the information processing module is connected to the intelligent generation module, which generates intelligent reports on the alarm information, mainly including the alarm information and the alarm time, and sets the report number for the maintenance personnel to solve related problems in a targeted manner. The output signal of the intelligent generation module is connected to the data transceiver module, which is used to send the generated report to the control terminal. The output signal of the data transceiver module is connected to the manual switching module. After the freight elevator accident occurs, the system control is switched to manual control to facilitate the rescue of the freight elevator. The transmission module and the remote lifting module are connected to the communication module signal, the information advancement unit is connected to the communication module signal, and the manual switching module is connected to the drive module signal.

[0019] When the freight elevator anti-fall intelligent control system is in use, it monitors the interior of the freight elevator after the door is closed through the human body sensor to prevent people and goods from riding the freight elevator together, and to prevent casualties caused by people riding the freight elevator when the freight elevator falls. The tension on the chain is monitored by the chain tension sensor. When the freight elevator is loaded and rising, the chain needs to pull the freight elevator up. The tension of the chain on the freight elevator needs to accelerate the freight elevator, so that the freight elevator changes from static to rising. When the tension on the chain is too large and reaches the threshold, the tension information is sent to the early warning unit 6, and the upload module in the early warning unit 6 sends the tension information to the control terminal. The control terminal sends a command to the PLC control unit so that the PLC control unit The C control unit temporarily stops the freight elevator, because the freight elevator is just starting at this time and its position change can be ignored. At this time, the PLC control unit displays an early warning message on the freight elevator control panel, prompting the freight elevator operator to reduce the single transportation of goods in time. During the ascent of the freight elevator, if the limit structure in the freight elevator drive device suddenly fails, the tension on the chain will suddenly decrease, and it will decrease significantly. The chain tension sensor will send the sudden change in tension information to the control terminal through the upload module in the early warning unit 6. The control terminal sends a command to the PLC control unit to control the anti-fall structure to be directly triggered to avoid the freight elevator having fallen before the anti-fall structure is triggered, and the drive equipment is monitored through the camera in the machine room. Carry out intuitive monitoring. Most of the reasons for the fall of freight elevators are the failure of the driving equipment. Therefore, monitor the driving equipment of the freight elevator to ensure that there are no problems with the monitoring equipment during the operation of the freight elevator. Monitor the goods inside the freight elevator through the internal camera of the freight elevator to avoid the goods from tipping over during transportation, which may cause the goods to collide with the freight elevator and cause the force on the chain on the freight elevator to suddenly increase. That is, when the goods are found to have a tendency to tip over, remind the freight elevator operator in time to stop the freight elevator and readjust the goods. Monitor the bottom of the freight elevator through the camera at the bottom of the freight elevator, mainly to see if there are people standing under the freight elevator during the operation of the freight elevator, to avoid casualties when the freight elevator falls. Use the freight elevator load-bearing monitor to check the weight of the goods when placing them on the freight elevator. Monitoring, reminding the users of the freight elevator when it is overloaded, and uploading the relevant information to the smart control platform through the upload module, and issuing instructions to the PLC control unit through the smart control platform, prohibiting the closing of the freight elevator door and the starting of the freight elevator. The freight elevator operation rate monitor monitors the speed of the freight elevator during the lifting process to avoid excessive tension on the chain when the freight elevator stops suddenly, which may cause the limit structure in the drive device to fail. When the freight elevator falls, its speed will change rapidly. The freight elevator operation rate monitor monitors the rapid change of the freight elevator operation speed, and can trigger the anti-fall structure in time, that is, the anti-fall structure is triggered in the early stage of descent (before the freight elevator moves downward), reducing the impact of the kinetic energy of the freight elevator falling on the anti-fall structure.

[0020] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The cargo elevator anti-fall intelligent control system includes an intelligent control center, which is characterized by: The output signal of the smart control platform is connected to a monitoring module (1), the output signal of the smart control platform is connected to a driving module (2), the output signal of the smart control platform is connected to a communication module (3), the output signal of the smart control platform is connected to a freight elevator control unit (4), the output signal of the smart control platform is connected to a freight elevator monitoring unit (5), the output signal of the smart control platform is connected to an early warning unit (6), and the output signal of the smart control platform is connected to an alarm unit (7).

2. The intelligent control system for preventing freight elevators from falling according to claim 1 is characterized in that: The freight elevator control unit (4) comprises a PLC control module and a remote control module.

3. The intelligent control system for preventing freight elevator from falling according to claim 2 is characterized in that: The output terminal signals of the PLC control module and the remote control module are connected with internal command signals, external call signals, door opening and closing signals, floor display, elevator call signal display, running direction indication, and door opening and closing control.

4. The intelligent control system for preventing a freight elevator from falling according to claim 3 is characterized in that: The freight elevator monitoring unit (5) comprises an integrated monitoring unit and an integrated power supply module, and the integrated monitoring unit comprises a sensor module and a camera module.

5. The intelligent control system for preventing freight elevator from falling according to claim 4 is characterized in that: The sensor module includes a human body sensor and a chain tension sensor; the camera module includes a machine room camera, a camera inside the freight elevator, and a camera at the bottom of the freight elevator; the input ends of the human body sensor, chain tension sensor, machine room camera, camera inside the freight elevator, and camera at the bottom of the freight elevator are all connected to the signal of the integrated power supply module.

6. The intelligent control system for preventing a freight elevator from falling according to claim 5 is characterized in that: The early warning unit (6) comprises an uploading module, the input end signal of the uploading module is connected to the judging module, the input end signal of the judging module is connected to the freight elevator load-bearing monitor and the freight elevator operation speed monitor, and the input end signals of the freight elevator load-bearing monitor and the freight elevator operation speed monitor are connected to the remote lifting module.

7. The intelligent control system for preventing a freight elevator from falling according to claim 6 is characterized in that: The alarm unit (7) comprises an information update module, the output end signal of the information update module is connected to the information processing module, the output end signal of the information processing module is connected to the intelligent generation module, the output end signal of the intelligent generation module is connected to the data transceiver module, and the output end signal of the data transceiver module is connected to the manual switching module.

8. The intelligent control system for preventing a freight elevator from falling according to claim 7 is characterized in that: The human body sensor in the freight elevator monitoring unit (5) is arranged inside the freight elevator, the chain tension sensor is arranged around the top chain of the freight elevator, the machine room camera is arranged in the machine room and monitors the freight elevator drive equipment and the power supply bank, the freight elevator internal camera is arranged inside the freight elevator and monitors the goods inside the freight elevator, and the freight elevator bottom camera is arranged at the bottom of the freight elevator and monitors the bottom of the freight elevator.

9. The intelligent control system for preventing a freight elevator from falling according to claim 8 is characterized in that: The upload module and the remote lifting module are connected to the communication module by signal.

10. The intelligent control system for preventing a freight elevator from falling according to claim 9 is characterized in that: The information updating unit is connected to the communication module by signal, and the manual switching module is connected to the driving module by signal.

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