People and vehicle separation device of caustic soda flake packaging system and method thereof

Abstract

The invention discloses a man-vehicle separation device of a caustic soda flake packaging system and a method thereof, the man-vehicle separation device comprises a field unit and a control unit, the field unit comprises a travel switch, a reset switch, an audible and visual alarm and a protection device, the travel switch, the reset switch and the audible and visual alarm are respectively connected with the control unit through electric signals, and the protection device is connected with the control unit. The protective device is formed by splicing a plurality of protective fences on the ground and dividing a site into a pedestrian flow side and a traffic flow side, a plurality of pedestrian flow doors are arranged on the protective device, and the control unit is used for interlocking a pedestrian flow door opening signal, a pedestrian flow door closing signal and a sound-light alarm signal, and interlocking a pedestrian flow door closing signal, a pedestrian flow door resetting signal and the sound-light alarm signal. The system is simple in structure, high in safety performance and low in investment cost, the site is divided into two activity areas, DCS interlocking warning and alarming are utilized, the space layout of the operation site is comprehensively optimized, the working efficiency of operators is improved, the working order of workers and vehicles on the operation site is standardized, and intelligent digital management is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic control, and particularly relates to a device and method for separating people and vehicles in a caustic soda packaging system. Background Art

[0002] Caustic soda packaging is the last link in the entire caustic soda process. Flaky caustic soda is automatically detected and bagged through operation and weighing systems. The weighing system automatically detects whether the weight of each bag is a qualified product. After being detected by the detection system, bags with insufficient or overweight weight are unqualified products and are sent to the unqualified conveyor belt for further review. Qualified products enter the qualified conveyor belt, are coded and numbered by an inkjet printer, and are sent under the gripper of a robot. The robot grabs each bag of qualified caustic soda that has been packed and places it on a pallet in an orderly manner. Then, the pallet conveyor belt transports the palletized caustic soda to the forklift loading position, and the forklift is responsible for the loading, unloading, and handling of the palletized caustic soda.

[0003] Throughout the packaging line, because the environment of caustic soda packaging is relatively complex, there are personnel activities and forklift activities. The mechanical operation noise is large, and there are many products placed in the packaging workshop. When using a forklift for loading, unloading, and handling, the blind spot of the forklift driver's line of sight is relatively large, making it difficult to detect pedestrians in the forklift blind spot and resulting in personal injury and death accidents; in addition, people and vehicles are in the same operating environment, and people and vehicles interfere with each other at the operating site, and the operating site is chaotic, affecting the operating efficiency.

[0004] The utility model patent CN 218729389 U provides a device for separating people and vehicles and a workshop protection system, which relates to the technical field of workshop protection equipment, including a monitoring mechanism, a control main body, and a reminder mechanism; the monitoring mechanism is used to detect the information that the vehicle moves to a position close to the workshop door in the people-vehicle flow passage and transmits this position information to the control main body. The monitoring mechanism includes a first proximity switch and a second proximity switch; however, the proximity switch is an electrified magnetic switch with a short induction distance and may cause false alarm phenomena. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a device and method for separating people and vehicles in a caustic soda packaging system. In order to prevent operators from being injured by forklifts, the entire area where the forklift operates and the area where the operators operate are separated by a protective fence, and the on-site sound and light alarm is triggered through interlocking to achieve the purpose of protecting and reminding the operators.

[0006] The present invention provides the following technical solution: a device and method for separating people and vehicles in a caustic soda packaging system, including a field unit and a control unit. The field unit includes a travel switch, a reset switch, an audible and visual alarm, and a protection device. The travel switch, the reset switch, and the audible and visual alarm are respectively connected to the control unit by electrical signals. The protection device is a number of guardrails spliced and installed on the ground to divide the site into a pedestrian side and a vehicle side. There are a number of pedestrian gates on the protection device. The control unit interlocks the opening signal of the pedestrian gate, the closing signal of the pedestrian gate, and the audible and visual alarm signal, and interlocks the closing signal of the pedestrian gate, the reset signal of the pedestrian gate, and the normal audible and visual alarm signal.

[0007] Preferably, there are 2-3 pedestrian gates.

[0008] Furthermore, the travel switch is provided with a lever and a microswitch, and the lever is connected to the microswitch by a positioning screw. Through the above technical solution, the mechanical movement of the lever is used to switch the opening and closing of the circuit, trigger the interlock to achieve an alarm, and remind the on-site personnel to pay attention to safety.

[0009] Furthermore, the guardrail is a U-shaped double-beam steel pipe guardrail. The guardrail includes an upper crossbar, a lower crossbar, a column, and a number of vertical columns are evenly arranged between the upper crossbar and the lower crossbar. "U"-shaped slides are arranged on the upper crossbar and the lower crossbar of the guardrail on one side of the pedestrian gate, and a steel pipe bracket is provided at the bottom of the column. Through the above technical solution, the operation site is divided into a pedestrian side and a vehicle side. If personnel need to enter the vehicle side, they must enter through the pedestrian gate, and they cannot enter the vehicle side in other directions.

[0010] Preferably, there are 3-5 vertical columns. Through the above technical solution, it is prevented that personnel enter the vehicle side through the gaps in the guardrail.

[0011] Furthermore, the distance between the columns is 12-13 m, the lower crossbar is 0.5-0.6 m from the ground, and the upper crossbar is 1.1-1.0 m from the ground.

[0012] Furthermore, the pedestrian gate is a single-sided U-shaped double-beam steel pipe guardrail. One end of the pedestrian gate is provided with a column, a lever baffle is provided in the middle of the outer side of the column, a pulley is provided at the lower part of the column, the lever baffle inclines towards the pedestrian side, and pulleys are arranged up and down on the outer side of the double beam at the other end and extend into the slideway. Through the above technical solution, the pedestrian gate can slide left and right. The lever baffle collides with the travel switch, causing the lever baffle to push the lever to move. When the lever baffle is pressed to a certain position, it pushes the microswitch to act quickly. When the lever of the travel switch moves away, the travel switch automatically resets.

[0013] Furthermore, the width of the pedestrian gate is 4.8-5.0 m, the lower crossbar is 0.6-0.7 m from the ground, and the upper crossbar is 1.0-0.9 m from the ground.

[0014] Further, the travel switch is installed outside the protective fence on the pedestrian side, close to the lever baffle, and the reset switch is installed on the same side as the travel switch.

[0015] Further, the sound and light alarm includes a sound buzzer and a light alarm integrated, and the sound and light alarm is installed on the top of the protective fence on the vehicle flow side. Through the above technical solution, the sound and light are used to remind the vehicle that someone has entered the vehicle flow side, and the vehicle stops working to check the reason for the person to enter.

[0016] Further, the control unit further includes a time delay device and a trigger, and the time delay device and the trigger are respectively electrically connected to the control unit. Through the above technical solution, the time delay device can judge whether there is an action, and the trigger can trigger the sound and light alarm to alarm.

[0017] Compared with the prior art, the present invention applies DCS control. When the field switch controls the pedestrian door, the signal of the opening or closing of the pedestrian door is transmitted to the control unit, and the sound and light alarm is interlocked to alarm. Early warning is carried out on the vehicle flow side, and the vehicle stops working to prevent personal injury accidents and improve the intelligent management on site. A protective fence is installed at the packaging site, dividing the packaging site into a pedestrian side and a vehicle flow side, and the site is managed in zones to prevent interference between operators and vehicle operations, comprehensively optimize the spatial layout of the packaging site, standardize the passage of operators and the driving order of vehicles, improve the work efficiency of personnel operations, and enhance the safety factor during operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention.

[0019] Figure 2 is Figure 1 a partial enlarged cross-sectional view of part A in

[0020] Figure 3 is the interlock of the pedestrian door opening signal, the pedestrian door closing signal and the sound and light alarm signal of the present invention.

[0021] Figure 4 is the interlock of the pedestrian door closing signal, the pedestrian door reset signal and the normal sound and light alarm signal of the present invention.

[0022] Figures 1-4 In , 1 is the protective fence, 2 is the pedestrian door, 3 is the reset switch, 4 is the sound and light alarm, 5 is the lever baffle, 6 is the travel switch, 7 is the upper crossbar, 8 is the slideway, 9 is the pulley, 10 is the steel pipe support, 11 is the vertical column, 12 is the column, 13 is the micro switch, 14 is the positioning screw, 15 is the lever, 16 is the lower crossbar, 17 is the pedestrian door opening signal, 18 is the pedestrian door closing signal, 19 is the time delay device, 20 is the trigger, 21 is the sound and light alarm signal, 22 is the pedestrian door reset signal, 23 is the normal sound and light alarm signal; EMBODIMENT

[0023] As Figures 1-4 described in, a device and method for separating people and vehicles of a caustic soda packaging system, including a field unit and a control unit. The field unit includes a travel switch 6, a reset switch 3, an audible and visual alarm 4, and a protective device. The travel switch 6, the reset switch 3, and the audible and visual alarm 4 are respectively connected to the control unit by electrical signals. The protective device is a number of guardrails 1 spliced and installed on the ground to divide the site into a pedestrian side and a vehicle side. There are a number of pedestrian gates 2 on the protective device. The control unit interlocks the pedestrian gate opening signal 17, the pedestrian gate closing signal 18, and the normal audible and visual alarm signal 21, and interlocks the pedestrian gate closing signal 18, the pedestrian gate reset signal 22, and the normal audible and visual alarm signal 23. The pedestrian gate 2 preferably can be 2, or can be 3. Each pedestrian gate corresponds to an audible and visual alarm 4. The travel switch 6 is provided with a lever 15 and a microswitch 13. The lever 15 and the microswitch 13 are connected by a positioning screw 14. The guardrail 1 is a U-shaped double-beam steel pipe guardrail. The guardrail includes an upper crossbar 7, a lower crossbar 16, columns 12. A number of vertical columns 11 are evenly arranged between the upper crossbar and the lower crossbar. The vertical columns preferably are 3, or can be 4, 5. On one side of the pedestrian gate, the upper crossbar and the lower crossbar of the guardrail are provided with a "U"-shaped slideway 8. The bottom of the column is provided with a steel pipe support 10. The distance between the columns is 12 - 13 m. The lower crossbar is 0.5 - 0.6 m from the ground. The upper crossbar is 1.1 - 1.0 m from the ground. The pedestrian gate 2 is a single-sided U-shaped double-beam steel pipe guardrail. One end of the pedestrian gate is provided with a column 12. A lever baffle 5 is arranged in the middle on the outside of the column. A pulley 9 is arranged at the lower part of the column. The lever baffle 5 inclines towards the pedestrian side. At the other end, pulleys 9 are arranged up and down on the outside of the double beam and extend into the slideway 8. The width of the pedestrian gate is 4.8 - 5.0 m. The lower crossbar is 0.6 - 0.7 m from the ground. The upper crossbar is 1.0 - 0.9 m from the ground. The travel switch is installed on the outside of the pedestrian side guardrail near the lever baffle. The reset switch is installed on the same side as the travel switch. The audible and visual alarm 4 includes an integrated sound buzzer and a light alarm. The audible and visual alarm is installed on the top of the vehicle side of the guardrail. The control unit further includes a time delay device 19 and a trigger 20. The time delay device 19 and the trigger 20 are respectively connected to the control unit by electrical signals.

[0024] The personnel at the caustic soda packaging site open the personnel flow door 2, and the lever 15 of the travel switch 6 is displaced. The travel switch 6 automatically resets, and the circuit switches to the open state. After the personnel flow door 2 is opened, the personnel flow door inputs the personnel flow door open signal 17 to the control unit. After passing through the time delay device for time delay, the open state of the personnel flow door 2 is judged. The audible and visual alarm signal 21 is triggered through the trigger. The on-site audible and visual alarm gives out sound and light alarms. The vehicle stops operating, and the personnel getting off the vehicle check the reason. After the personnel leave, the personnel flow door 2 is closed. The personnel flow door 2 inputs the personnel flow door close signal 18 to the control unit. After passing through the time delay device for time delay, the closed state of the personnel flow door 2 is judged. The audible and visual alarm signal 21 is triggered through the trigger. The on-site audible and visual alarm gives out sound and light alarms; when there are 2 personnel flow doors on-site, among the 2 personnel flow doors 2, as long as one personnel flow door 2 is opened, or both personnel flow doors 2 are opened simultaneously, the 2 personnel flow doors simultaneously input the personnel flow door open signal 17 to the control unit. After passing through the time delay device for time delay, the open state of the 2 personnel flow doors 2 is judged. The audible and visual alarm signal 21 is triggered through the trigger. The 2 on-site audible and visual alarms give out sound and light alarms. The vehicle stops operating, and the personnel getting off the vehicle check the reason. Among the 2 personnel flow doors, as long as one personnel flow door 2 is closed, or both personnel flow doors 2 are closed and in the closed state, the 2 personnel flow doors 2 input the personnel flow door close signal 18 to the control unit. After passing through the time delay device for time delay, the closed state of the 2 personnel flow doors 2 is judged. The audible and visual alarm signal 21 is triggered through the trigger. The 2 on-site audible and visual alarms give out sound and light alarms; when there are 3 personnel flow doors on-site, among the 3 personnel flow doors 2, as long as one personnel flow door 2 is opened, or two personnel flow doors 2 are opened, or all 3 personnel flow doors 2 are opened simultaneously, the 3 personnel flow doors simultaneously input the personnel flow door open signal 17 to the control unit. After passing through the time delay device for time delay, the open state of the 3 personnel flow doors 2 is judged. The audible and visual alarm signal 21 is triggered through the trigger. The 3 on-site audible and visual alarms give out sound and light alarms. The vehicle stops operating, and the personnel getting off the vehicle check the reason. Among the 3 personnel flow doors, as long as one personnel flow door 2 is closed, or two personnel flow doors 2 are closed, or all 3 personnel flow doors 2 are in the closed state simultaneously, the 3 personnel flow doors 2 input the personnel flow door close signal 18 to the control unit. After passing through the time delay device for time delay, the closed state of the 3 personnel flow doors 2 is judged. The audible and visual alarm signal 21 is triggered through the trigger. The 3 on-site audible and visual alarms give out sound and light alarms.

[0025] After the personnel close the access door 2, they press the reset switch 3. The access door and the reset switch simultaneously input the access door closed signal 18 and the access door reset signal 22 to the control unit. The control unit receives the access door closed signal 18 and the access door reset signal 22 at the same time, and the control unit outputs the normal signal 23 of the sound and light alarm, and the sound and light alarm stops emitting the sound and light alarm; when there are 2 access doors 2 on site, only after closing the opened access door 2 and pressing the reset switch 3 corresponding to the access door 2, the alarm will stop. If the reset switch pressed is not the reset switch 3 corresponding to the opened access door 2, the alarm will continue; when there are 3 access doors 2 on site, only after closing the opened access door 2 and pressing the reset switch 3 corresponding to the access door 2, the alarm will disappear; if the reset switch pressed is not the reset switch 3 corresponding to the opened access door 2, the alarm will continue.

Claims

1. A device for separating people and vehicles in a caustic soda packaging system, characterized in that: It includes a field unit and a control unit. The field unit includes a travel switch, a reset switch, an audible and visual alarm, and a protective device. The travel switch, the reset switch, and the audible and visual alarm are respectively connected to the control unit by electrical signals. The protective device is composed of a number of guardrails spliced and installed on the ground to divide the site into a pedestrian side and a vehicle side. There are a number of pedestrian gates on the protective device. The control unit interlocks the opening signal of the pedestrian gate, the closing signal of the pedestrian gate, and the audible and visual alarm signal, and interlocks the closing signal of the pedestrian gate, the reset signal of the pedestrian gate, and the normal audible and visual alarm signal.

2. The person-vehicle separation device of a caustic soda packaging system according to claim 1, characterized in that: The travel switch is provided with a lever and a microswitch, and the lever is connected to the microswitch by a positioning screw.

3. The person-vehicle separation device of a caustic soda packaging system as claimed in claim 1, wherein: The guardrail is a U-shaped double-beam steel pipe guardrail. The guardrail includes an upper crossbar, a lower crossbar, a column, and a number of vertical columns are evenly arranged between the upper crossbar and the lower crossbar. "U"-shaped slides are arranged on the upper crossbar and the lower crossbar of the guardrail on one side of the pedestrian gate. A steel pipe bracket is provided at the bottom of the column.

4. The vehicle and pedestrian separation device of a caustic soda packaging system according to claim 3, characterized in that: The distance between the columns is 12 - 13m, the lower crossbar is 0.5 - 0.6m from the ground, and the upper crossbar is 1.1 - 1.0m from the ground.

5. The vehicle and pedestrian separation device of a caustic soda packaging system according to claim 1, characterized in that: The pedestrian gate is a single-sided U-shaped double-beam steel pipe guardrail. A column is provided at one end of the pedestrian gate. A lever baffle is provided in the middle on the outer side of the column. A pulley is provided at the lower part of the column. The lever baffle inclines towards the pedestrian side. Pulleys are provided on the upper and lower sides of the outer side of the double beam at the other end and extend into the slide.

6. The vehicle and pedestrian separation device of a caustic soda packaging system according to claim 5, characterized in that: The width of the pedestrian gate is 4.8 - 5.0m, the lower crossbar is 0.6 - 0.7m from the ground, and the upper crossbar is 1.0 - 0.9m from the ground.

7. The vehicle and pedestrian separation device of a caustic soda packaging system according to claim 1, characterized in that: The travel switch is installed on the outer side of the guardrail on the pedestrian side near the lever baffle, and the reset switch is installed on the same side as the travel switch.

8. The person-vehicle separation device of a caustic soda packaging system as described in claim 1, wherein: The audible and visual alarm includes an integrated sound buzzer and a light alarm, and the audible and visual alarm is installed on the top of the guardrail on the vehicle side.

9. The person-vehicle separation device of a caustic soda packaging system according to claim 1, characterized in that: The control unit further includes a time delay device and a trigger, and the time delay device and the trigger are respectively connected to the control unit by electrical signals.

10. A method for separating people and vehicles in a caustic soda packaging system, characterized in that: It includes the following steps: (1) When the pedestrian gate on the pedestrian side is opened, the travel switch acts, the circuit switches to the open state, the pedestrian gate inputs a pedestrian gate open signal to the control unit, and after being delayed by the time delay device, the audible and visual alarm starts to alarm; (2) When the pedestrian gate on the pedestrian side is closed, after the reset switch is reset, the pedestrian gate and the reset switch simultaneously input a pedestrian gate close signal and a pedestrian gate reset signal to the control unit. When the control unit receives the pedestrian gate close signal and the pedestrian gate reset signal simultaneously, the audible and visual alarm stops alarming.

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