Alarm device for safe operation of double-beam traveling crane

Abstract

The utility model provides an alarm device for safe operation of a double-beam travelling crane, which comprises a wireless communication device, a wireless camera (5) arranged at a special door (1) for personnel to enter and exit in a workshop, an infrared sensor (2), a voice prompter (3) connected with the infrared sensor, and a monitoring screen arranged at a travelling crane operation room (9), the monitoring area of the infrared sensor is located at the monitoring view of the wireless camera, the monitoring screen is connected with the wireless camera through the wireless communication device, and the voice prompter is connected with the first PLC (4) through the intermediate relay; when the infrared sensor is triggered by the entering behavior of people at the exit and the entrance, the voice prompter sends out voice for reminding irrelevant people to leave immediately, and an intermediate relay of the voice prompter sends a switching value signal to the first PLC, so that the first PLC sends a parking instruction to a second PLC (10) of the driving control circuit through the wireless communication device; according to the utility model, the problem that foreign personnel cannot find field operation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing and manufacturing, in particular to an alarm device for the safe operation of a double-beam crane. Background Art

[0002] During the feeding of aluminum smelting furnace, if outsiders break into the production site, it will disrupt the on-site operation order, and personal safety cannot be guaranteed, which poses a great safety hazard. In the existing driving operation, the safety warning and alarm system is an important means to improve the safety of the operation, while the traditional alarm device often has a single function and cannot fully cover the various safety hazards in the driving operation, and there are problems such as missed reports and false reports. Therefore, it is necessary to design a new double-beam driving safety operation alarm device to improve the safety of driving operations. Summary of the invention

[0003] The utility model provides an alarm device for the safe operation of a double-beam crane, which installs sensors and collects signals to an alarm processing system for signal processing and timely alarm, thus solving the problem that outsiders cannot be found when entering the on-site operation.

[0004] The utility model adopts the following technical solutions.

[0005] A double-beam crane safe operation alarm device is used in the crane feeding process of an aluminum smelting furnace. The alarm device comprises a wireless communication device, a wireless camera (5) arranged at a special door (1) for workshop personnel to enter and exit the crane feeding process, an infrared sensor (2), a voice prompter (3) connected to the infrared sensor, and a monitoring screen arranged at a crane operation room (9); the monitoring area of ​​the infrared sensor is located at the monitoring field of the wireless camera, the monitoring screen is connected to the wireless camera via the wireless communication device, and the voice prompter is connected to a first PLC (4) via an intermediate relay; when the infrared sensor is triggered by the entry of personnel at the exit or entrance, the voice prompter emits a voice to remind irrelevant personnel to leave immediately, and sends a switch signal to the first PLC via its intermediate relay, so that the first PLC sends a stop instruction to a second PLC (10) of the crane control circuit via the wireless communication device.

[0006] The wireless communication device comprises a signal transmitting device (6) and a signal receiving device (7) arranged at the driving position.

[0007] The driving operation room is also provided with an audible and visual alarm (12), and the monitoring screen is a wireless monitoring screen (13) connected to the driving control circuit and the signal receiving device. When the second PLC receives the stop command from the first PLC, the audible and visual alarm starts to alarm, the monitoring screen displays the image of the wireless camera, and the driving control circuit controls the frequency converter (11) of the driving mechanism of the driving to slow down the driving (8) until it stops.

[0008] The crane feeding process is an aluminum smelting furnace workshop, and an HMI device is also provided in the crane operation room. When the sound and light alarm is activated, the screen of the HMI device is switched to the monitoring screen of the aluminum smelting furnace workshop.

[0009] The driving control circuit is provided with a reset switch for resetting the sound and light alarm at the driving position. When the driving control circuit resets the sound and light alarm through the reset switch, the driving resumes normal operation.

[0010] The reset switch is a manual switch. When the operator in the driving operation room confirms through the monitoring screen that the person has left the danger zone, the operator manually resets the sound and light alarm through the reset switch.

[0011] The alarm device further comprises an operation cancel selection switch (0), and when the crane is not in a feeding operation condition, the operation cancel selection switch is set to a cancel gear position to avoid false alarms by the alarm device.

[0012] The utility model can improve the safety of driving operations and prevent potential safety hazards; the device of the invention is mainly composed of a sensor module, a control module, an alarm module and a communication module, and can achieve real-time monitoring, accurate alarm and remote control.

[0013] The use method of the utility model is simple and efficient, and can significantly improve the safety level of driving operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0015] Attached Figure 1 It is a schematic diagram of the utility model;

[0016] Attached Figure 2 It is a schematic diagram of the operation logic of the utility model;

[0017] In the figure: 0-cancel selection switch; 1-special door for workshop personnel to enter and exit; 2-infrared sensor; 3-voice prompter; 4-first PLC; 5-wireless camera; 6-signal transmitting device; 7-signal receiving device; 8-crane; 9-crane operating room; 10-second PLC; 11-frequency converter; 12-sound and light alarm; 13-wireless monitoring screen. DETAILED DESCRIPTION

[0018] As shown in the figure, an alarm device for the safe operation of a double-beam crane is used in the crane feeding process of an aluminum smelting furnace. The alarm device includes a wireless communication device, and also includes a wireless camera 5, an infrared sensor 2 and a voice prompter 3 connected to the infrared sensor, which are arranged at a special door 1 for workshop personnel to enter and exit the crane feeding process, and a monitoring screen arranged at a crane operation room 9; the monitoring area of ​​the infrared sensor is located at the monitoring field of view of the wireless camera, the monitoring screen is connected to the wireless camera via a wireless communication device, and the voice prompter is connected to the first PLC4 via an intermediate relay; when the infrared sensor is triggered by the entry of personnel at the exit and entrance, the voice prompter sends out a voice to remind irrelevant personnel to leave immediately, and sends a switch signal to the first PLC through its intermediate relay, so that the first PLC sends a stop command to the second PLC10 of the crane control circuit via the wireless communication device.

[0019] The wireless communication device includes a signal transmitting device 6 and a signal receiving device 7 arranged at the driving position.

[0020] The driving operation room is also provided with an audible and visual alarm 12, and the monitoring screen is a wireless monitoring screen 13 connected to the driving control circuit and the signal receiving device. When the second PLC receives the parking command from the first PLC, the audible and visual alarm starts to alarm, the monitoring screen displays the picture of the wireless camera, and the driving control circuit controls the frequency converter 11 of the driving mechanism of the driving to slow down the driving vehicle 8 to stop.

[0021] The crane feeding process is an aluminum smelting furnace workshop, and an HMI device is also provided in the crane operation room. When the sound and light alarm is activated, the screen of the HMI device is switched to the monitoring screen of the aluminum smelting furnace workshop.

[0022] The driving control circuit is provided with a reset switch for resetting the sound and light alarm at the driving position. When the driving control circuit resets the sound and light alarm through the reset switch, the driving resumes normal operation.

[0023] The reset switch is a manual switch. When the operator in the driving operation room confirms through the monitoring screen that the person has left the danger zone, the operator manually resets the sound and light alarm through the reset switch.

[0024] The alarm device also includes an operation cancel selection switch 0. When the crane is not in a feeding operation condition, the operation cancel selection switch is set to a cancel gear position to avoid false alarms by the alarm device.

[0025] In this example, the first PLC has a built-in module for sending a stop command. When receiving a switch signal from the voice prompter, the module for sending a stop command is triggered and sends a preset stop command to the second PLC10 of the driving control circuit via a wireless communication device.

[0026] In this example, the crane is a double-beam crane.

[0027] In this embodiment, Figure 1 As shown in the figure, 0 is the system operation cancel selection switch, 1 is the special door for workshop personnel to enter and exit, 2 is the infrared sensor, 3 is the voice prompter, 4 is the PLC, 5 is the wireless camera, 6 is the signal transmitter, and 7 is the signal receiving device. When someone passes through the special door, the infrared sensor is triggered, and the connected voice prompter will issue a safety reminder such as "The site is working. To ensure safety, please leave." In addition, the trigger signal of the sensor is processed by 1#PLC and then transmitted through 6 signal transmitters. 7 signal receiving devices receive the signal and process it through 2#PLC to issue a stop command, slow down the relevant inverter on the crane to stop running, and start the sound and light alarm. After the operator confirms through the wireless monitoring camera system, the alarm signal is reset after the personnel leave, and the crane can resume normal operation; when the crane is not in the feeding operation period, the 0 system operation cancel selection switch can be turned to the cancel state to prevent false alarms and facilitate other operations.

[0028] In this embodiment, Figure 2 As shown, when the infrared induction switch of door 1# or door 2# is triggered, the function of driving related equipment slowing down and stopping operation or failing to start requires the sorting out of the signal logic of the ground and driving control cabinet. When the infrared induction switch is triggered, and the selection switch on the door operating panel is in the running mode, when the transmitting device is in normal state, the input signal DI light remains on; when the signal receiving device is in normal state, the output signal DO light remains on. At this time, if the driving equipment is in a stopped state, the output signal will cut off the main control circuit of the motor on the driving, and the sound and light alarm light will be started to keep running; if the driving equipment is in a running state, the output signal will cause the driving inverter to drive the motor to slow down until it stops running, and the output signal will start the sound and light alarm light to keep running. In addition, in order to facilitate maintenance and repair in this embodiment, a run / cancel selection switch is specially added, and this case has been well applied on site.

Claims

1. An alarm device for the safe operation of a double-beam crane, used in the crane feeding process of an aluminum smelting furnace, characterized in that: The alarm device comprises a wireless communication device, a wireless camera (5) arranged at a special door (1) for workshop personnel to enter and exit during the crane feeding process, an infrared sensor (2), a voice prompter (3) connected to the infrared sensor, and a monitoring screen arranged at a crane operation room (9); the monitoring area of ​​the infrared sensor is located at the monitoring field of view of the wireless camera, the monitoring screen is connected to the wireless camera via the wireless communication device, and the voice prompter is connected to a first PLC (4) via an intermediate relay; when the infrared sensor is triggered by the entry of personnel at the exit or entrance, the voice prompter emits a voice to remind irrelevant personnel to leave immediately, and sends a switch signal to the first PLC via its intermediate relay, so that the first PLC sends a stop instruction to a second PLC (10) of the crane control circuit via the wireless communication device.

2. The double-beam crane safety operation alarm device according to claim 1 is characterized in that: The wireless communication device comprises a signal transmitting device (6) and a signal receiving device (7) arranged at the driving position.

3. The double-beam crane safety operation alarm device according to claim 2 is characterized in that: The driving operation room is also provided with an audible and visual alarm (12), and the monitoring screen is a wireless monitoring screen (13) connected to the driving control circuit and the signal receiving device. When the second PLC receives the stop command from the first PLC, the audible and visual alarm starts to alarm, the monitoring screen displays the image of the wireless camera, and the driving control circuit controls the frequency converter (11) of the driving mechanism of the driving to slow down the driving (8) until it stops.

4. The double-beam crane safety operation alarm device according to claim 3 is characterized by: The crane feeding process is an aluminum smelting furnace workshop, and an HMI device is also provided in the crane operation room. When the sound and light alarm is activated, the screen of the HMI device is switched to the monitoring screen of the aluminum smelting furnace workshop.

5. The double-beam crane safety operation alarm device according to claim 3 is characterized by: The driving control circuit is provided with a reset switch for resetting the sound and light alarm at the driving position. When the driving control circuit resets the sound and light alarm through the reset switch, the driving resumes normal operation.

6. The double-beam crane safe operation alarm device according to claim 5, characterized in that: The reset switch is a manual switch. When the operator in the driving operation room confirms through the monitoring screen that the person has left the danger zone, the operator manually resets the sound and light alarm through the reset switch.

7. The double-beam crane safety operation alarm device according to claim 3 is characterized by: The alarm device further comprises an operation cancel selection switch (0), and when the crane is not in a feeding operation condition, the operation cancel selection switch is set to a cancel gear position to avoid false alarms by the alarm device.

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