Safety interlocking mutual protection control device and method based on manual packaging area
Through real-time monitoring and data generation of work orders, the sky car is restricted from entering and exiting the packaging area, solving the safety hazards of manual packaging areas, and realizing the safety guarantee of packaging personnel and unmanned support for the storage area.
Patent Information
- Application Number
- CN202411468559.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-02-21
AI Technical Summary
During the operation of the unmanned system of Tianche in the reservoir area, there are safety hazards in the manual packaging area, and the packaging personnel and Tianche work cross-operated, resulting in the inability to effectively guarantee the operation safety.
Through the industrial control system server, data such as packaging area status, packaging configuration, sky car operation flow configuration, limit switch and rolling button switch quantity are read in real time, and corresponding sky car entry and packaging work orders are generated, and the sky car entry and exit packaging work orders are generated, and the sky car entry and exit packaging work orders are used to generate the sky car entry and exit packaging work orders, and the sky is in line with the sky. There are restrictions on the entry and exit of the car, and an interlocking and mutual insurance mechanism is adopted to ensure the safety of packaging personnel.
It effectively ensures the safe operation of packaging personnel, ensures smooth packaging of steel coils during the production line downline, and supports the implementation of unmanned systems in the reservoir area.
Smart Images
Figure CN119489981A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a safety interlocking and mutual protection control device and method based on a manual packaging area, belonging to the technical field of control devices and methods for unmanned overhead crane production warehouse areas. Background Art
[0002] During the operation of the unmanned overhead crane system in the warehouse area, the manual packaging area is an important link in the entire operation process, but it is also the link with the greatest safety hazards. There are situations where packaging personnel and the overhead crane work in parallel, and the working process of the packaging area personnel cannot interact with the overhead crane, and the working safety of the packaging personnel cannot be effectively guaranteed. Summary of the invention
[0003] The purpose of the present invention is to provide a safety interlocking and mutual protection control device and method based on a manual packaging area. The device and method can read the packaging area status, packaging configuration, overhead crane operation flow configuration, limit switch and coil hanging and unwinding button switch quantity and other data in real time through the industrial control system server, generate corresponding overhead crane entry and exit packaging work orders, and impose restrictions on the entry and exit of the overhead crane to provide protection for the safe operation of the packaging personnel. During the process of steel coils coming off the production line, the smooth packaging of the steel coils can be guaranteed through the coordinated operation of the packaging area and the overhead crane. An interlocking and mutual protection mechanism can be used to ensure the safety of the packaging personnel, provide support for the unmanned realization of the warehouse area, and effectively solve the above-mentioned problems existing in the background technology.
[0004] The technical solution of the present invention is: a safety interlocking and mutual protection control device based on an artificial packaging area, comprising a limit switch, a packaging area fence, a connecting fall chain, a programmable controller, an integrated control box, a push button switch, a signal light, Ethernet, an industrial control system server and a management operation computer, wherein the packaging area fence is fixed around each packaging area, the limit switch is installed at the junction of the fences of each packaging area, the connecting fall chain is arranged on one side of the limit switch, and when the overhead crane is allowed to enter the packaging area, the connecting fall chain is connected to the limit switch; the integrated control box is installed on a column in the warehouse area, the push button switch, the signal light and the programmable controller are installed in the integrated control box, the programmable controller is connected to the limit switch, and the programmable controller is simultaneously connected to the industrial control system server and the management operation computer via Ethernet.
[0005] The button switch comprises a button for allowing winding, a button for allowing unwinding and an emergency stop button, which are respectively connected to a programmable controller, and the button for allowing winding and the button for allowing unwinding are in a calculation relationship.
[0006] The industrial control system server is arranged in the electrical room of the overhead crane, the management operation computer is arranged in the operation room of the storage area, the industrial control system server and the management operation computer are connected via a network cable, and the overhead crane and the industrial control system server are connected via a wireless AP communication.
[0007] A safety interlocking and mutual protection control method based on a manual packaging area comprises the following steps: (1) The management operation computer generates a work order based on the available configuration of the packaging area and the overhead crane offline flow configuration, and sends it to the industrial control system server according to the steel coil position and status information transmitted by the field interface; (2) After the industrial control system server M1 generates an offline work order based on the configuration information, the overhead crane operation process determines whether the packaging area allows the overhead crane to enter and exit the operation. If the packaging area meets the unwinding conditions, go to step (3). If all packaging areas do not meet the unwinding conditions, go to step (4); (3) When the packaging area meets the unwinding conditions, the corresponding packaging area is connected to the reverse chain and the limit switch, so that the limit switch is in a closed state, and the unwinding button is allowed to be turned on and in a closed state. A signal for unwinding is given and the signal is transmitted to the programmable controller in the corresponding integrated control box. The programmable controller feeds back the result to the industrial control system server. The industrial control system server gives instructions, and the overhead crane starts to execute the offline packaging work order operation; (4) When all packaging areas do not meet the unwinding conditions, the management operation computer generates a work order for direct storage of coils according to the offline workflow configuration. The industrial control system server assigns the work order to the overhead crane. The overhead crane will automatically cancel the packing work order based on the work order situation and will not perform the packaging operation. It will give priority to the offline storage work order and hoist the unpacked steel coils in the storage area into the packaging area when conditions permit. (5) After unwinding is completed, the overhead crane returns to the standby position; (6) After confirming that the packaging area is safe again, open the connecting chain to restore the limit switch to the normally open state; (7) Press the button to allow coil lifting, repeat the similar process, and arrange the overhead crane to lift the packaged steel coil out of the packaging area.
[0008] (8) When there is a problem with the overhead crane hoist or other situations that require stopping operation, press the emergency stop button to allow on-site personnel to perform necessary control and manual intervention on the unmanned overhead crane system.
[0009] In the step (2), it is judged that the packaging area meets the unwinding conditions as follows: there is no occupied steel coil at the unwinding position of the packaging area monitored in real time by the management operation computer, and when unwinding is allowed at this position, the steel coil position on the walking beam, steel coil information and overhead crane operation status all meet the requirements.
[0010] In the step (3), the programmable controller reads the upper limit switch of each packaging fence and the switch signal of the button for allowing the winding to be released on the integrated control box in real time, and the switch signals of the button for allowing the winding to be released and the button for allowing the winding to be released are calculated. It is agreed that only one of the button for allowing the winding to be released and the button for allowing the winding to be released can be in the on state, and the connecting chain is connected to the limit switch at the same time, and the overhead crane can enter the packaging area. If one of the conditions is not met, the overhead crane waits.
[0011] In the step (7), the judgment condition for generating a work order for lifting the packaged steel coil out of the packaging area and storing it in the warehouse is that the coil lifting button is allowed to give a coil lifting signal, and at the same time, the packaging area connection fall chain is connected to the limit switch, and the management operation computer generates a work order for lifting the coil out of the packaging area and sends it to the industrial control system server. The industrial control system server assigns the work order to the overhead crane.
[0012] The beneficial effects of the present invention are as follows: data such as the packaging area status, packaging configuration, overhead crane operation flow configuration, limit switches, and coil-hanging and unwinding button switch quantities are read in real time through the industrial control system server, corresponding overhead crane entry and exit packaging work orders are generated, and restrictions are imposed on the entry and exit of the overhead crane to provide protection for the safe operation of packaging personnel. During the process of steel coils coming off the production line, the smooth packaging of the steel coils can be ensured through the coordinated operation of the packaging area and the overhead crane, and an interlocking and mutual protection mechanism is used to ensure the safety of the packaging personnel, providing support for the unmanned realization of the warehouse area. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of an embodiment of the present invention; In the figure: limit switch 11, limit switch 22, limit switch 33, packaging partition 1 fence A1, packaging partition 2 fence A2, packaging partition 3 fence A3, integrated control box 1 B1, integrated control box 2 B2, integrated control box 3 B3, Ethernet C1, overhead crane C2, push button switch D1, network cable E1, connection fall chain 1 F1, connection fall chain 2 F2, connection fall chain 3 F3, signal light 1 L1, signal light 2 L2, signal light 3 L3, steel coil S1. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical solutions and advantages of the invention implementation cases clearer, the technical solutions in the implementation cases of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the present invention, rather than all the implementation cases. Based on the implementation cases in the present invention, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0015] A safety interlocking and mutual protection control device based on an artificial packaging area comprises a limit switch, a packaging area fence, a connecting fall chain, a programmable controller P1, an integrated control box, a push button switch D1, a signal light, an Ethernet C1, an industrial control system server M1 and a management operation computer M2. The packaging area fence is fixed around each packaging area, the limit switch is installed at the junction of the packaging area fences, the connecting fall chain is arranged on one side of the limit switch, and when the overhead crane is allowed to enter the packaging area, the connecting fall chain is connected to the limit switch; the integrated control box is installed on a column in the warehouse area, the push button switch D1, the signal light and the programmable controller P1 are installed in the integrated control box, the programmable controller P1 is connected to the limit switch, and the programmable controller P1 is simultaneously connected to the industrial control system server M1 and the management operation computer M2 through the Ethernet C1.
[0016] The button switch D1 includes a button for allowing winding, a button for allowing unwinding and an emergency stop button. The button for allowing winding, the button for allowing unwinding and the emergency stop button are respectively connected to the programmable controller, and the button for allowing winding and the button for allowing unwinding are in a calculation relationship.
[0017] The industrial control system server M1 is arranged in the electrical room of the overhead crane, and the management operation computer M2 is arranged in the operation room of the storage area. The industrial control system server M1 and the management operation computer M2 are connected via a network cable E1, and the overhead crane C2 is connected to the industrial control system server M1 via a wireless AP communication.
[0018] A safety interlocking and mutual protection control method based on a manual packaging area comprises the following steps: (1) The management operation computer generates a work order based on the available configuration of the packaging area and the overhead crane offline flow configuration, and sends it to the industrial control system server according to the steel coil position and status information transmitted by the field interface; (2) After the industrial control system server generates an offline work order based on the configuration information, the overhead crane operation process determines whether the packaging area allows the overhead crane to enter and exit the packaging area. If the packaging area meets the unwinding conditions, go to step (3). If all packaging areas do not meet the unwinding conditions, go to step (4); (3) When the packaging area meets the unwinding conditions, the corresponding packaging area is connected to the reverse chain and the limit switch, so that the limit switch is in a closed state, and the unwinding button is allowed to be turned on and in a closed state. A signal for unwinding is given and the signal is transmitted to the programmable controller in the corresponding integrated control box. The programmable controller feeds back the result to the industrial control system server. The industrial control system server gives instructions, and the overhead crane starts to execute the offline packaging work order operation; (4) When all packaging areas do not meet the unwinding conditions, the management operation computer generates a work order for direct storage of coils according to the offline workflow configuration. The industrial control system server assigns the work order to the overhead crane. The overhead crane will automatically cancel the packing work order based on the work order situation and will not perform the packaging operation. It will give priority to the offline storage work order and hoist the unpacked steel coils in the storage area into the packaging area when conditions permit. (5) After unwinding is completed, the overhead crane returns to the standby position; (6) After confirming that the packaging area is safe again, open the connecting chain to restore the limit switch to the normally open state; (7) Press the button to allow coil lifting, repeat the similar process, and arrange the overhead crane to lift the packaged steel coil out of the packaging area.
[0019] (8) When there is a problem with the overhead crane hoist or other situations that require stopping operation, press the emergency stop button to allow on-site personnel to perform necessary control and manual intervention on the unmanned overhead crane system.
[0020] In the step (2), it is judged that the packaging area meets the unwinding conditions as follows: there is no occupied steel coil at the unwinding position of the packaging area monitored in real time by the management operation computer, and when unwinding is allowed at this position, the steel coil position on the walking beam, steel coil information and overhead crane operation status all meet the requirements.
[0021] In the step (3), the programmable controller reads the upper limit switch of each packaging fence and the switch signal of the button for allowing the winding to be released on the integrated control box in real time, and the switch signals of the button for allowing the winding to be released and the button for allowing the winding to be released are calculated. It is agreed that only one of the button for allowing the winding to be released and the button for allowing the winding to be released can be in the on state, and the connecting chain is connected to the limit switch at the same time, and the overhead crane can enter the packaging area. If one of the conditions is not met, the overhead crane waits.
[0022] In the step (7), the judgment condition for generating a work order for lifting the packaged steel coil out of the packaging area and storing it in the warehouse is that the coil lifting button is allowed to give a coil lifting signal, and at the same time, the packaging area connection fall chain is connected to the limit switch, and the management operation computer generates a work order for lifting the coil out of the packaging area and sends it to the industrial control system server. The industrial control system server assigns the work order to the overhead crane.
[0023] In actual application, the present invention includes multiple packaging area fences located below the overhead crane C2, a connecting fall chain installed on each packaging area fence, a limit switch corresponding to each connecting fall chain, and an integrated control box connected to each limit switch, the integrated control box is provided with a lifting and unwinding permission button and an unwinding permission button for controlling the overhead crane to lift and unwind, a signal light, an emergency stop button and a programmable controller, an Ethernet C1 connected to the programmable controller P1 for communication, an industrial control system server M1 and a management operation computer M2 connected to the Ethernet C1 for information, and the industrial control system server M1 and the management operation computer M2 are connected via a network cable E1.
[0024] The programmable controller P1 is installed in each integrated control box and is connected to each other via a communication cable.
[0025] The industrial control system server M1 is located in the overhead crane electrical room, and the management operation computer M2 is located in the warehouse operation room. The overhead crane C2 is connected to the industrial control system server M1 through a wireless AP communication.
[0026] After the information and position of each component are connected or installed, the packaging related configuration is performed: The management operation computer can monitor the status of the packaging area, configure the overhead crane and packaging area, and assign overhead crane work orders. The available configurations of the packaging area are related to whether the overhead crane will generate an operation work order for this packaging area. The process of the overhead crane going offline (offline → packaging area → warehouse area) and the automatic entry of packaging determine the operation process of the overhead crane. The industrial control system server reads these operation configurations of the management operation computer in real time, and generates corresponding packaging area work orders based on the operation status of the overhead crane and adds them to the work order pool.
[0027] The management operation computer M2 configures the available configurations of the packaging area and the offline flow of the overhead crane, generates a work order based on the position and status information of the steel coil transmitted from the on-site interface, and sends it to the industrial control system server M1. At the same time, the process control system server M1 sends the operation instruction to the overhead crane based on the closing status of the on-site limit switch and the status of the button switch on the integrated control box. The overhead crane decides whether to enter or exit the packaging area to perform the operation based on the instruction.
[0028] The specific judgment process includes: After the industrial control system server M1 generates an offline work order based on the configuration information, the overhead crane operation process first considers whether the packaging area allows the overhead crane to enter and exit the operation. The conditions include: whether there is no occupied steel coil at the unwinding position in the packaging area monitored in real time by the management operation computer M2. When unwinding is allowed at this position, if the steel coil is in the stepping beam position, steel coil information, and overhead crane operation status all meet the requirements, the corresponding packaging area is connected to the fall chain and connected to the limit switch (that is, the limit switch is in a closed state), and the unwinding button is allowed to be turned on and in a closed state, a unwinding signal is given, and the signal is transmitted to the programmable controller P1 in the corresponding integrated control box. The programmable controller P1 feeds back the result to the industrial control system server M1, and the industrial control system server M1 gives an instruction, and the overhead crane C2 starts to execute the offline packaging work order operation.
[0029] When all packaging areas do not meet the unwinding conditions, the management operation computer M2 will automatically generate a work order for directly hoisting the coils into the warehouse according to the above-mentioned offline workflow configuration. The industrial control system server M1 assigns the work order to the overhead crane C2. The overhead crane C2 will automatically invalidate the work order for packaging based on the work order situation and will not perform packaging operations. It will give priority to the offline warehousing work order and can hoist the unpackaged steel coils in the warehouse into the packaging area when conditions permit.
[0030] The judgment condition for generating a work order for lifting the packaged steel coils out of the packaging area and putting them into storage is that the coil lifting button is allowed to give a coil lifting signal, and at the same time, the packaging area connection fall chain is connected to the limit switch (that is, the limit switch is in a closed state). The management operation computer M2 will automatically generate a work order for lifting the coil out of the packaging area and send it to the industrial control system server M1. The industrial control system server M1 assigns the work order to the overhead crane C2. At this time, the packaging area connection fall chain cannot be opened. If the overhead crane is lifting the coil in the packaging area, the connection fall chain is opened, which will trigger the overhead crane emergency stop signal to ensure personnel safety. Example
[0031] Assume that in a finished product warehouse of a steel plant, there are three packaging areas, namely packaging area 1, packaging area 2 and packaging area 3, each packaging area is used to process steel coils of different specifications, and the overhead crane C2 is responsible for transporting these steel coils in and out of the packaging area. In order to ensure the safety of the staff when the overhead crane is operated, the present invention is used.
[0032] Field parameter values: Packing area fences: Each packing area is equipped with fixed fences, namely, packing area fence A1, packing area fence A2 and packing area fence A3.
[0033] Limit switches: Set limit switch 1 (normally open) for packaging partition 1 Set limit switch 2 (normally open) in packaging partition 2 Set limit switch 3 (normally open) in packaging partition 3.
[0034] Connecting fall chain: cooperate with the limit switch of each packaging area as a "safety door", namely connecting fall chain 1 F1, connecting fall chain 2 F2 and connecting fall chain 3 F3.
[0035] Integrated control box: Three integrated control boxes are set up corresponding to the three packaging areas, namely integrated control box 1 B1, integrated control box 2 B2 and integrated control box 3 B3.
[0036] Button switch: Each integrated control box contains a button for allowing the reel to be hoisted, a button for allowing the reel to be unwound, and an emergency stop button.
[0037] Signal light: The signal light is a two-color signal light, red means stop, green means run. Signal lights are set in each integrated control box, namely signal light one L1, signal light two L2 and signal light three L3.
[0038] Programmable controller P1: installed in each integrated control box.
[0039] Industrial control system server M1: located in the overhead crane electrical room.
[0040] Management operation computer M2: located in the warehouse operation room.
[0041] The interlocking and mutual protection control process is as follows: Scene Setting: Assume that the steel coils currently need to be transported from the production line to packaging area 1 for packaging.
[0042] Pack partition one is currently idle and has no operations in progress.
[0043] Specific steps: 1. Preparation 1. The operator checks and confirms that all staff in packaging area 1 have evacuated, and closes the connection chain F1 so that limit switch 1 is closed.
[0044] 2. The state change of limit switch 1 is detected by the programmable controller P1, and the programmable controller P1 waits for further instructions.
[0045] 2. Start unwinding operation 1. The operator presses the unwinding permission button on the integrated control box B1.
[0046] 2. After receiving the signal, the programmable controller P1 verifies whether the limit switch 1 is closed and whether the unwinding button is turned on.
[0047] 3. If both conditions are met, the programmable controller P1 sends a signal requesting unwinding to the industrial control system server M1.
[0048] 4 After the industrial control system server and M1 confirm that everything is correct, an unwinding work order is generated, and the overhead crane C2 is instructed to enter the packaging partition 1 to perform the unwinding task through wireless communication.
[0049] 5. Overhead crane C2 moves to the designated position and starts unwinding. At the same time, signal light L1 turns green, indicating that the system is in operation.
[0050] 3. Emergency handling 1. If any abnormality occurs during the unwinding process (such as overhead crane failure or operating error), the staff in packaging area 1 can immediately press the emergency stop button.
[0051] 2. After the emergency stop button is triggered, the programmable controller P1 immediately interrupts all output signals, causing the overhead crane C2 to stop moving, and the signal light L1 turns red.
[0052] 3. The industrial control system server M1 will also receive an emergency stop signal and suspend the execution of related work orders until the problem is resolved.
[0053] 4. Exit after completing the assignment 1. After unwinding is completed, overhead crane C2 returns to the standby position.
[0054] 2. After the operator confirms that the packaging partition 1 is safe again, he can open the connection chain 1 F1 to restore the limit switch 1 to the normally open state.
[0055] 3. Subsequently, the operator can press the coil lifting button on the integrated control box B1 and repeat a similar process to arrange the overhead crane C2 to lift the packaged steel coil out of the packaging partition one.
[0056] During the use of the present invention, when the packaging operator finds that there is a problem with the C1 hoisting roll or other situations that require stopping the operation, he can press the emergency stop button in the integrated control box in time, allowing the on-site personnel to perform necessary control and manual intervention on the unmanned overhead crane system to ensure safety. The management of other packaging zones is carried out in the same way.
[0057] The present invention utilizes limit switches, packaging area fences, connecting fall chains, programmable controllers, integrated control boxes, button switches, signal lights, Ethernet networks, industrial control system servers, and management operation computers to form a safety interlocking mutual protection control device. The industrial control system server reads the packaging area status, packaging configuration, overhead crane operation flow configuration, limit switch quantity, coil hanging and unwinding button switch quantity and other data in real time, generates corresponding overhead crane packaging in and out work orders, and restricts the overhead crane in and out of packaging, providing protection for the safe operation of packaging personnel. It can ensure the smooth packaging of steel coils during the off-line process of the production line through the coordinated operation of the packaging area and the overhead crane, and provide support for completing the off-line process.
Claims
1. A safety interlocking control device based on the manual packaging area, characterized in that: The invention comprises a limit switch, a packaging area fence, a connecting fall chain, a programmable controller (P1), an integrated control box, a push button switch (D1), a signal light, an Ethernet (C1), an industrial control system server (M1) and a management operation computer (M2). The packaging area fence is fixed around each packaging area, the limit switch is installed at the junction of the packaging area fences, the connecting fall chain is arranged on one side of the limit switch, and when the overhead crane is allowed to enter the packaging area, the connecting fall chain is connected to the limit switch; the integrated control box is installed on the column of the warehouse area, the push button switch (D1), the signal light and the programmable controller (P1) are installed in the integrated control box, the programmable controller (P1) is connected to the limit switch, and the programmable controller (P1) is also connected to the industrial control system server (M1) and the management operation computer (M2) through the Ethernet (C1).
2. According to claim 1, a safety interlocking control device based on the manual packaging area is characterized in that: The button switch (D1) comprises a button for allowing winding, a button for allowing unwinding and an emergency stop button. The button for allowing winding, the button for allowing unwinding and the emergency stop button are respectively connected to the programmable controller. The button for allowing winding and the button for allowing unwinding are in a calculation relationship.
3. According to claim 1, a safety interlocking control device based on the manual packaging area is characterized in that: The industrial control system server (M1) is arranged in the electrical room of the overhead crane, the management operation computer (M2) is arranged in the operation room of the storage area, the industrial control system server (M1) and the management operation computer (M2) are connected via a network cable (E1), and the overhead crane (C2) and the industrial control system server (M1) are connected via a wireless AP communication.
4. A safety interlocking control method based on manual packaging area, characterized in that The following steps are involved: (1) The management operation computer generates a work order based on the available configuration of the packaging area and the overhead crane offline flow configuration, and sends it to the industrial control system server according to the steel coil position and status information transmitted by the field interface; (2) After the industrial control system server generates an offline work order based on the configuration information, the overhead crane operation process determines whether the packaging area allows the overhead crane to enter and exit the operation. If the packaging area meets the unwinding conditions, go to step (3). If all packaging areas do not meet the unwinding conditions, go to step (4); (3) When the packaging area meets the unwinding conditions, the corresponding packaging area is connected to the reverse chain and the limit switch, so that the limit switch is in a closed state, and the unwinding button is allowed to be turned on and in a closed state. A signal for unwinding is given and the signal is transmitted to the programmable controller in the corresponding integrated control box. The programmable controller feeds back the result to the industrial control system server. The industrial control system server gives instructions, and the overhead crane starts to execute the offline packaging work order operation; (4) When all packaging areas do not meet the unwinding conditions, the management operation computer generates a work order for direct storage of coils according to the offline workflow configuration. The industrial control system server assigns the work order to the overhead crane. The overhead crane will automatically cancel the packing work order based on the work order situation and will not perform the packaging operation. It will give priority to the offline storage work order and hoist the unpacked steel coils in the storage area into the packaging area when conditions permit. (5) After unwinding is completed, the overhead crane returns to the standby position; (6) After confirming that the packaging area is safe again, open the connecting chain to restore the limit switch to the normally open state; (7) Press the button to allow coil lifting, repeat the similar process, and arrange the overhead crane to lift the packaged steel coil out of the packaging area; (8) When there is a problem with the overhead crane hoist or other situations that require stopping operation, press the emergency stop button to allow on-site personnel to perform necessary control and manual intervention on the unmanned overhead crane system.
5. The safety interlocking control device based on the manual packaging area according to claim 4 is characterized in that: In the step (2), it is judged that the packaging area meets the unwinding conditions as follows: there is no occupied steel coil at the unwinding position of the packaging area monitored in real time by the management operation computer, and when unwinding is allowed at this position, the steel coil position on the walking beam, steel coil information and overhead crane operation status all meet the requirements.
6. The safety interlocking control device based on the manual packaging area according to claim 4 is characterized in that: In the step (3), the programmable controller reads the upper limit switch of each packaging fence and the switch signal of the button for allowing the winding to be released on the integrated control box in real time, and the switch signals of the button for allowing the winding to be released and the button for allowing the winding to be released are calculated. It is agreed that only one of the button for allowing the winding to be released and the button for allowing the winding to be released can be in the on state, and the connecting chain is connected to the limit switch at the same time, and the overhead crane can enter the packaging area. If one of the conditions is not met, the overhead crane waits.
7. The safety interlocking control device based on the manual packaging area according to claim 4 is characterized in that: In the step (7), the judgment condition for generating a work order for lifting the packaged steel coil out of the packaging area and storing it in the warehouse is that the coil lifting button is allowed to give a coil lifting signal, and at the same time, the packaging area connection chain is connected to the limit switch, and the management operation computer generates a work order for lifting the coil out of the packaging area and sends it to the industrial control system server. The industrial control system server assigns the work order to the overhead crane.