Conveying device, security check system and security check method thereof

Abstract

The invention provides a conveying device, a security check system and a security check method of the security check system. The conveying component is rotatably arranged on the mounting frame and used for conveying articles, the conveying component comprises a plurality of conveying rollers arranged at intervals, and a conveying surface is formed by the multiple conveying rollers; the driving component is used for driving the conveying component to rotate; the safety protection component is configured to form a light curtain area on the side, away from the objects, of the conveying face, and when foreign matter enters the light curtain area, an alarm signal is triggered. The control module is in communication connection with the driving component and the safety protection component; and the control module is configured to send a shutdown signal to the driving part based on the alarm signal, so that the conveying part is switched from the rotating state to the stopping state. According to the conveying device, if foreign matter falls into the light curtain area below the conveying face, an alarm signal can be triggered, the control module receives the alarm signal and sends a shutdown signal to the driving component, the response time is effectively shortened, and the safety of the conveying device and personnel is ensured.

Description

Technical Field

[0001] The present invention relates to the field of transportation and inspection technology, and in particular to a transportation device, a security inspection system and a security inspection method thereof. Background Art

[0002] Roller conveyor equipment is widely used due to its advantages such as smooth and reliable operation, easy maintenance, and suitability for conveying heavier items.

[0003] In the related art, roller conveyor equipment is usually equipped with an electric control cabinet, on which a start button and a stop button are provided, and the operation of the roller conveyor equipment is controlled by manually pressing the buttons. Along the conveying direction of the roller conveyor equipment, a plurality of conveyor rollers are usually arranged at intervals. If a dangerous factor occurs during the operation of the roller conveyor equipment, the roller conveyor equipment is stopped by pressing a button, and the response time is long, and the conveyor rollers fail to quickly switch from a rotating state to a stopped state. For example, when the roller conveyor equipment is used in a security inspection system, when the tray for placing luggage moves with a plurality of conveyor rollers, small items may fall into the gap between the conveyor rollers. If the conveyor rollers fail to stop rotating in time, the fallen items will collide with the conveyor rollers, damaging the conveyor rollers and the items. In addition, if a person picks up the fallen items and the conveyor rollers do not stop rotating in time, the person may be pinched. Therefore, the existing roller conveyor equipment has a large safety hazard. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a conveying device, a security inspection system and a security inspection method thereof, which are used to solve the problem that the existing conveying device fails to stop rotating quickly after foreign objects enter the conveying area, resulting in safety hazards.

[0005] In a first aspect, an embodiment of the present invention provides a conveying device, comprising:

[0006] Mounting frame;

[0007] A conveying component is rotatably mounted on the mounting frame and is used to convey articles, wherein the conveying component comprises a plurality of conveying rollers arranged at intervals, and the plurality of conveying rollers form a conveying surface;

[0008] A driving component, used for driving the conveying component to rotate;

[0009] A safety protection component is configured to form a light curtain area on a side of the conveying surface away from the object, and trigger an alarm signal when a foreign object enters the light curtain area; and

[0010] A control module, connected to the driving component and the safety protection component for communication;

[0011] Wherein, the control module is configured to send a stop signal to the driving component based on the alarm signal, so that the conveying component switches from a rotating state to a stopped state.

[0012] According to an embodiment of the present invention, the mounting frame comprises a first mounting beam and a second mounting beam disposed at intervals;

[0013] One end of the conveying roller is rotatably connected to the first mounting beam, and the other end of the conveying roller is rotatably connected to the second mounting beam;

[0014] The safety protection components include:

[0015] a transmitter, disposed on the first mounting beam;

[0016] a receiver, disposed on the second mounting beam, wherein the transmitter and the receiver are configured to form a light beam between two adjacent conveying rollers; and

[0017] The light curtain controller is connected to the receiver for determining whether to trigger the alarm signal.

[0018] According to an embodiment of the present invention, the light curtain controller is further used to determine whether to trigger a release alarm signal;

[0019] The control module is configured to send a restart signal to the driving component based on the alarm release signal, so that the conveying component switches from the stop state to the rotation state.

[0020] According to an embodiment of the present invention, the conveying device further comprises a timing module, and the timing module is communicatively connected with the light curtain controller and the control module;

[0021] The timing module is used to send a timing end signal to the control module after the light curtain controller triggers the alarm release signal after a preset time period;

[0022] The control module is configured to send the restart signal to the driving component based on the timing end signal, so that the conveying component switches from the stop state to the rotation state.

[0023] According to an embodiment of the present invention, the conveying component includes a plurality of conveying units arranged in sequence;

[0024] The driving component includes a plurality of driving units arranged in sequence, and the plurality of driving units correspond one to one to the plurality of conveying units;

[0025] The safety protection component includes a plurality of light curtain units arranged in sequence, and the plurality of light curtain units correspond one to one to the plurality of conveying units;

[0026] The control module is configured to receive the alarm signal sent by any of the light curtain units, and send the shutdown signal to the driving unit corresponding to the light curtain unit, so that the conveying unit corresponding to the driving unit switches from the rotating state to the stopped state.

[0027] In a second aspect, an embodiment of the present invention provides a security inspection system, including:

[0028] Security screening equipment for conducting security checks on baggage; and

[0029] The conveying device is arranged at the entrance end of the security inspection equipment and is used to convey the tray with luggage placed on it to the security inspection equipment.

[0030] According to an embodiment of the present invention, the security inspection system further comprises a sorting device, which is arranged on one side of the conveying device;

[0031] The arranging device comprises:

[0032] Pallet conveyor lines for conveying empty pallets; and

[0033] The sorting table is arranged above the tray conveying line and is suitable for pushing the tray with luggage placed on it onto the conveying component of the conveying device.

[0034] In a third aspect, an embodiment of the present invention provides a security inspection method, including:

[0035] Acquiring an alarm signal, wherein the alarm signal is triggered by a safety protection component of the conveying device;

[0036] Based on the alarm signal, a stop signal is sent to the driving component of the conveying device, so that the conveying component of the conveying device switches from a rotating state to a stopped state.

[0037] According to an embodiment of the present invention, the security inspection method further includes:

[0038] Acquire a clear alarm signal, wherein the clear alarm signal is triggered by the safety protection component;

[0039] Based on the alarm release signal, a restart signal is sent to the driving component to switch the conveying component from the stop state to the rotation state.

[0040] According to an embodiment of the present invention, sending a restart signal to the driving component based on the alarm release signal includes:

[0041] Based on the alarm release signal, generating a timing start signal;

[0042] Based on the timing start signal, obtaining a timing end signal;

[0043] Based on the timing end signal, the restart signal is sent to the driving component.

[0044] According to an embodiment of the present invention, the obtaining of the alarm signal comprises: obtaining the alarm signal sent by any light curtain unit;

[0045] The sending of the stop signal to the driving component of the conveying device includes: sending the stop signal to the driving unit corresponding to the light curtain unit that triggers the alarm signal.

[0046] According to an embodiment of the present invention, the obtaining of the alarm release signal comprises: obtaining the alarm release signal sent by any of the light curtain units;

[0047] The sending of the restart signal to the driving component includes: sending the restart signal to the driving unit corresponding to the light curtain unit that triggers the alarm release signal.

[0048] The conveying device, security inspection system and security inspection method provided by the embodiments of the present invention can at least achieve the following technical effects: the conveying component is used to convey articles, and the safety protection component forms a light curtain area below the conveying surface. If a foreign object falls into the light curtain area below the conveying surface, an alarm signal will be triggered. The control module receives the alarm signal and sends a stop signal to the driving component, which effectively shortens the response time and enables the conveying roller to quickly switch from a rotating state to a stopped state, thereby ensuring the safety of the conveying device and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0050] Figure 1 One of the structural schematic diagrams of the conveying device according to an embodiment of the present invention is schematically shown;

[0051] Figure 2 A second schematic diagram of the structure of the conveying device according to an embodiment of the present invention is schematically shown;

[0052] Figure 3 A third schematic diagram of the structure of the conveying device according to an embodiment of the present invention is schematically shown;

[0053] Figure 4 The structure diagram of the security inspection system according to the embodiment of the present invention is schematically shown;

[0054] Figure 5 A schematic diagram of a process flow of a security inspection method according to an embodiment of the present invention is shown;

[0055] Reference numerals:

[0056] 100: conveying device; 10: mounting frame; 20: conveying component; 21: conveying roller; 201: first conveying unit; 202: second conveying unit; 203: third conveying unit; 30: safety protection component; 31: transmitter; 32: receiver; 33: light beam; 301: first light curtain unit; 302: second light curtain unit; 303: third light curtain unit;

[0057] 200: security inspection equipment; 300: sorting device; 310: pallet conveyor line; 320: sorting table. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. Obviously, the described embodiments are 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.

[0059] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Combine the following Figures 1 to 3 A delivery device 100 according to an embodiment of the present invention will be described.

[0062] like Figure 1As shown, the conveying device 100 provided by the embodiment of the present invention includes a mounting frame 10, a conveying component 20, a driving component, a safety protection component 30 and a control module. The conveying component 20 is rotatably arranged on the mounting frame 10, and is used to convey articles. The conveying component 20 includes a plurality of conveying rollers 21 arranged at intervals, and the plurality of conveying rollers 21 form a conveying surface. The driving component is used to drive the conveying component 20 to rotate. The safety protection component 30 is configured to form a light curtain area on the side of the conveying surface away from the article, and trigger an alarm signal when a foreign object enters the light curtain area. The control module is communicatively connected with the driving component and the safety protection component 30. The control module is configured to send a stop signal to the driving component based on the alarm signal, so that the conveying component 20 switches from a rotating state to a stopped state.

[0063] Exemplarily, the mounting frame 10 is a frame structure, and the mounting frame 10 includes a mounting beam and a supporting beam, the length direction of the mounting beam is consistent with the conveying direction, the two mounting beams are arranged at intervals, the supporting beam is perpendicular to the mounting beam, the supporting beam is installed at the bottom or side of the mounting beam, and multiple supporting beams are arranged at intervals along the length direction of the mounting beam. The mounting beam and the supporting beam can be prepared by profiles, and the profiles include I-beams, channel steels, rectangular steels, etc.

[0064] The conveying member 20 includes a plurality of conveying rollers 21 arranged at intervals. Compared with the conveying belt, the conveying rollers 21 are suitable for conveying heavier objects, such as workpieces, luggage, pallets carrying luggage, etc. The number of conveying rollers 21 is set according to actual needs, and a gap is formed between two adjacent conveying rollers 21.

[0065] In some embodiments, the driving component includes a driving motor, and the conveying component 20 also includes multiple chains. A sprocket is provided at the end of the conveying roller 21, and the chain is sleeved on the sprockets of two adjacent conveying rollers 21. The two adjacent conveying rollers 21 are connected by the chain. The driving motor is connected to one of the conveying rollers 21, and the conveying roller 21 is an active roller. The driving motor drives the active roller to rotate, and the synchronous rotation of multiple conveying rollers 21 is achieved through chain transmission.

[0066] In some embodiments, the driving component includes two or more driving motors, and the multiple conveying rollers 21 are driven to rotate synchronously by the multiple driving motors.

[0067] The conveying component 20 has a conveying surface, which is the plane where the top contours of the plurality of conveying rollers 21 are located, and is also the surface where the conveying rollers 21 are in contact with the objects.

[0068] The safety protection component 30 is installed in the conveying direction of the conveying component 20. The safety protection component 30 includes a transmitter 31, a receiver 32 and a light curtain controller. The transmitter 31 corresponds to one end of the conveying roller 21, and the receiver 32 corresponds to the other end of the conveying roller 21. The transmitter 31 is used to emit multiple light beams 33, and the receiver 32 receives the light beams 33, thereby the multiple light beams 33 form a light curtain area below the conveying surface. The range covered by the light curtain area extends from the first end to the second end of the mounting frame 10. Along the length direction of the mounting frame 10, the two ends of the mounting frame 10 are the first end and the second end respectively. The receiver 32 receives the light beam 33, converts the optical signal into an electrical signal, and transmits it to the light curtain controller. The light curtain controller processes and analyzes the received electrical signal to determine whether the light curtain is blocked. If the light curtain is blocked, an alarm signal is triggered, and the light curtain controller sends an alarm signal.

[0069] It can be understood that the light curtain area is located below the conveying surface, that is, the objects normally conveyed on the conveying roller 21 will not enter the position where the light curtain area is located.

[0070] The driving component and the safety protection component 30 are both connected to the control module for communication. The light curtain controller triggers an alarm signal, and the control module receives the alarm signal sent by the light curtain controller and sends a stop signal to the driving component. The driving motor stops running after receiving the stop signal, so that the multiple conveying rollers 21 switch from the rotating state to the stopped state.

[0071] The following describes the use of the conveying device 100 in some working scenarios.

[0072] At the airport, the conveying device 100 is used to convey a tray loaded with luggage. Passengers place their luggage in the tray and put the tray with the luggage on the conveying component 20. The tray moves forward with the rotation of the conveying roller 21. Small items in the tray, such as ID cards, document belts, etc., may slip from the tray and fall onto the conveying roller 21 or fall into the gap between the conveying rollers 21. Passengers may unconsciously reach out to take the fallen items, which may cause the risk of being pinched or scratched by the conveying roller 21. Fallen items are defined as foreign objects.

[0073] The light curtain area is located below the conveying surface. If a foreign object falls from the gap between the conveying rollers 21 to the light curtain area, the light curtain is blocked and an alarm signal is triggered. The control module receives the alarm signal sent by the light curtain controller and sends a stop signal to the drive motor. The drive motor stops running and the conveying roller 21 switches from the rotating state to the stopped state. From the alarm signal triggered by the falling object to the drive motor receiving the stop signal, a quick response can be made, so that the conveying roller 21 can quickly switch from the rotating state to the stopped state. Before the passenger makes a picking action, the conveying roller 21 has stopped moving, effectively preventing the passenger from being pinched when picking up the dropped object.

[0074] In addition, if the dropped object is a sharp object and falls onto the conveying roller 21, if the conveying roller 21 fails to stop rotating in time, the sharp object may collide with the conveying roller 21 and be ejected, which may damage the conveying roller 21 and may also affect the safety of passengers around. If a foreign object enters the gap between the conveying rollers 21, an alarm signal is immediately triggered, and the control module sends a stop signal to the driving component, so that the conveying roller 21 stops rotating in time, effectively protecting the safety of the conveying component 20 and passengers.

[0075] On the production line, the conveying device 100 is used to convey workpieces, which are placed in a loading box. The loading box carrying the workpieces moves forward with the rotation of the conveying roller 21. If a workpiece falls from the loading box, an alarm signal is immediately triggered, and the control module sends a stop signal to the driving component, so that the conveying roller 21 stops rotating in time, effectively protecting the safety of the conveying component 20 and the staff.

[0076] In an embodiment of the present invention, the conveying component 20 is used to convey articles, and the safety protection component 30 forms a light curtain area below the conveying surface. If a foreign object falls into the light curtain area below the conveying surface, an alarm signal will be triggered. The control module receives the alarm signal and sends a stop signal to the driving component, which effectively shortens the response time, so that the conveying roller 21 can quickly switch from a rotating state to a stopped state, ensuring the safety of the conveying device 100 and personnel.

[0077] like Figure 1 and Figure 2 As shown, in an optional embodiment, the mounting frame 10 includes a first mounting beam and a second mounting beam arranged at intervals, one end of the conveying roller 21 is rotatably connected to the first mounting beam, and the other end of the conveying roller 21 is rotatably connected to the second mounting beam. The safety protection component 30 includes a transmitter 31, a receiver 32 and a light curtain controller, the transmitter 31 is arranged on the first mounting beam, the receiver 32 is arranged on the second mounting beam, the transmitter 31 and the receiver 32 are configured to form a light beam 33 between two adjacent conveying rollers 21, and the light curtain controller is connected in communication with the receiver 32 to determine whether to trigger an alarm signal.

[0078] In some embodiments, the mounting frame 10 includes a first mounting beam and a second mounting beam arranged at intervals, and the first mounting beam and the second mounting beam can be made of steel. The conveying component 20 also includes a seat bearing, and a plurality of seat bearings are installed on the first mounting beam and the second mounting beam. For example, the mounting beam is made of channel steel, and the seat bearing is installed on the top surface of the channel steel or the U-shaped groove of the channel steel. One end of the conveying roller 21 is rotatably connected to the seat bearing on the first mounting beam, and the other end of the conveying roller 21 is rotatably connected to the seat bearing on the second mounting beam.

[0079] The safety protection component 30 includes a transmitter 31, a receiver 32 and a light curtain controller. One of the transmitter 31 and the receiver 32 is installed at the bottom of the first mounting beam, and the other is installed at the bottom of the second mounting beam, thereby forming multiple light beams 33 between the first mounting beam and the second mounting beam. At least one light beam 33 is formed between two adjacent conveying rollers 21. If a foreign object enters the light curtain between the two conveying rollers 21, the light curtain controller determines that the light curtain is blocked and triggers an alarm signal.

[0080] It is understandable that the light beam 33 emitted by the transmitter 31 is slightly lower than the conveying surface, so that foreign objects fall to the conveying roller 21, which can quickly trigger an alarm signal, while ensuring that the objects conveyed on the conveying roller 21 will not block the light curtain. The conveying component 20 may also include a pallet, which is located below the plurality of conveying rollers 21, and the transmitter 31 and the receiver 32 are installed between the conveying rollers 21 and the pallet. It is understandable that the light beam 33 is located between the conveying surface and the pallet. The pallet is used to receive the fallen objects. After the objects fall from the gap between the conveying rollers 21, they fall onto the pallet, making it convenient for people to pick up the fallen objects.

[0081] The conveying component 20 and the safety protection component 30 are both mounted on the first mounting beam and the second mounting beam, which is beneficial to the compactness of the overall structure.

[0082] In an optional embodiment, the light curtain controller is further used to determine whether to trigger a release alarm signal. The control module is configured to send a restart signal to the driving component based on the release alarm signal to switch the conveying component 20 from a stopped state to a rotating state.

[0083] Exemplarily, the light curtain controller is also used to process and analyze the received electrical signals, and after the foreign object is removed, it is determined that the light curtain is not blocked, thereby triggering a release alarm signal.

[0084] After the light curtain controller triggers the alarm signal, the drive motor stops, the conveyor roller 21 stops rotating, and the passenger or staff removes the foreign object that has fallen onto the conveyor roller 21. After the foreign object is removed, the light curtain is not blocked, and the light curtain controller determines that the light curtain is not blocked, and triggers the alarm release signal.

[0085] The light curtain controller sends a clear alarm signal to the control module, and the control module receives the clear alarm signal, and the control module sends a restart signal to the drive component. The drive motor receives the restart signal and starts again, and the drive motor switches from the shutdown state to the working state, so that the conveying roller 21 continues to rotate and conveys the items.

[0086] In the embodiment of the present invention, after the foreign object is removed, the staff does not need to restart the drive motor by pressing a switch or button, etc. The control module sends a restart signal to the drive motor according to the received alarm release signal, and the drive motor receives the restart signal and starts. After the foreign object is removed and the dangerous factors are eliminated, the drive motor can quickly switch from the shutdown state to the working state, which is conducive to the intelligent operation of the conveying device 100.

[0087] In an optional embodiment, the conveying device 100 further includes a timing module, which is in communication with the light curtain controller and the control module. The timing module is used to send a timing end signal to the control module after a preset time period after the light curtain controller triggers the alarm release signal. The control module is configured to send a restart signal to the driving component based on the timing end signal, so that the conveying component 20 switches from a stopped state to a rotating state.

[0088] Exemplarily, the conveying device 100 further includes a timing module, which is in communication with the light curtain controller, and is in communication with the control module. After the foreign matter at the conveying roller 21 is removed, the timing module starts timing, and after a preset time, the timing module ends timing. The preset time is set according to actual needs, and the preset time can be 2s, 3s, 4s, 5s, etc.

[0089] Specifically, after the foreign object at the conveying roller 21 is removed, the light curtain is not blocked, the light curtain controller triggers a release alarm signal, and the light curtain controller sends a release alarm signal to the timing module. The timing module starts timing after receiving the release alarm signal, and the timing ends after a preset time.

[0090] After the timing ends, the timing module sends a timing end signal to the control module. The control module receives the timing end signal and sends a restart signal to the drive motor. The drive motor starts to drive the conveying roller 21 to rotate and continue to convey the objects.

[0091] If the drive motor is started immediately after the foreign object is removed, the person's hand may not be completely removed from the conveying roller 21 , and there is still a risk of the person being pinched or scratched by the conveying roller 21 .

[0092] In an embodiment of the present invention, after the foreign object is removed, after a preset delay, the timing module sends a timing end signal to the control module. The control module sends a restart signal to the drive motor based on the received timing end signal, so that the drive motor starts with a delay, which is beneficial to further ensure the safety of personnel.

[0093] like Figure 3As shown, in an optional embodiment, the conveying component 20 includes a plurality of conveying units arranged in sequence. The driving component includes a plurality of driving units arranged in sequence, and the plurality of driving units correspond to the plurality of conveying units one by one. The safety protection component 30 includes a plurality of light curtain units arranged in sequence, and the plurality of light curtain units correspond to the plurality of conveying units one by one.

[0094] The control module is configured to receive an alarm signal sent by any light curtain unit, and send a stop signal to the driving unit corresponding to the light curtain unit, so that the conveying unit corresponding to the driving unit switches from a rotating state to a stopped state.

[0095] Exemplarily, the conveying member 20 includes a plurality of conveying units arranged in sequence, the number of which is set according to the total length of the conveying member 20, and each conveying unit includes a plurality of conveying rollers 21 arranged at intervals. The number of conveying rollers 21 of each conveying unit is not specifically limited.

[0096] The driving component includes a plurality of driving units arranged in sequence, the plurality of driving units correspond to the plurality of conveying units one by one, each driving unit includes at least one driving motor, and each driving unit is used to drive a plurality of conveying rollers 21 in the corresponding conveying unit to rotate.

[0097] The safety protection component 30 includes a plurality of light curtain units arranged in sequence, and the plurality of light curtain units correspond to the plurality of conveying units one by one. The range of the light curtain area formed by each light curtain unit is adapted to the conveying area of ​​the corresponding conveying unit. That is, a light beam 33 is formed between two adjacent conveying rollers 21 in each conveying unit. Each light curtain unit includes a transmitter 31, a receiver 32 and a light curtain controller.

[0098] In one embodiment, the conveying component 20 includes three conveying units, and the three conveying units are respectively defined as a first conveying unit 201, a second conveying unit 202, and a third conveying unit 203 along the conveying direction of the conveying component 20. The three driving units corresponding to the three conveying units each include a driving motor, and the three driving motors are respectively defined as a first driving motor, a second driving motor, and a third driving motor. The three light curtain units corresponding to the three conveying units are respectively defined as a first light curtain unit 301, a second light curtain unit 302, and a third light curtain unit 303.

[0099] Multiple trays carrying luggage are placed on the conveying component 20, and the multiple trays move forward with the rotation of the multiple conveying rollers 21. If an item falls from the tray on the first conveying unit 201, the first light curtain unit 301 sends a first alarm signal to the control module, and the control module receives the first alarm signal and sends a first stop signal to the first drive motor, so that the multiple conveying rollers 21 in the first conveying unit 201 stop rotating. Ensure that personnel can safely take out the fallen items from the conveying rollers 21.

[0100] After the first conveying unit 201 stops rotating, the multiple conveying rollers 21 in the second conveying unit 202 and the multiple conveying rollers 21 in the third conveying unit 203 are still in a rotating state, that is, when personnel are picking up fallen items at the first conveying unit 201, the trays placed on the second conveying unit 202 and the third conveying unit 203 are still moving forward, so that the trays placed on the second conveying unit 202 and the third conveying unit 203 continue to move toward the entrance end of the security inspection equipment.

[0101] In some embodiments, after the fallen object is removed from the first conveying unit 201, the first light curtain unit 301 sends a cancel alarm signal to the control module, the control module receives the cancel alarm signal, sends a first restart signal to the first drive motor, the first drive motor receives the first restart signal, and drives the multiple conveying rollers 21 in the first conveying unit 201 to continue rotating.

[0102] In some embodiments, after the fallen object is removed from the first conveying unit 201, the first light curtain unit 301 sends a clear alarm signal to the timing module, and the timing module starts timing. After a preset time, the timing module sends a clear alarm signal to the control module. The control module receives the clear alarm signal and sends a first restart signal to the first drive motor. The first drive motor receives the first restart signal and drives the multiple conveying rollers 21 in the first conveying unit 201 to continue to rotate. After the foreign object is removed, the first conveying unit 201 delays for a preset time and then continues to rotate, which is conducive to further ensuring the safety of personnel.

[0103] In an embodiment of the present invention, if one of the multiple conveying units drops an object, the control module controls the corresponding conveying unit to stop rotating, while the other conveying units continue to rotate, thereby ensuring that the foreign object is safely removed without affecting the conveying of other conveying units, thereby ensuring the conveying efficiency.

[0104] like Figure 4 As shown, an embodiment of the present invention further provides a security inspection system, which includes a security inspection device 200 and a conveying device 100. The security inspection device 200 is used to perform security inspection on luggage. The conveying device 100 is arranged at the entrance end of the security inspection device 200, and is used to convey a tray with luggage placed thereon to the security inspection device 200.

[0105] Specifically, the security inspection device 200 has an inlet end and an outlet end, and the conveying device 100 is disposed at the inlet end of the security inspection device 200. The conveying device 100 is used to convey the tray with the luggage to the inlet end of the security inspection device 200, and the security inspection device 200 further performs a security check on the luggage in the tray. The conveying device 100 can convey multiple trays at the same time, and the structure of the conveying device 100 is as described above.

[0106] The passenger places the tray with the luggage on the conveyor roller 21, and the tray moves toward the entrance end of the security inspection device 200 as the conveyor roller 21 rotates. If a small item falls from the tray, the light curtain is blocked by the fallen foreign object, triggering an alarm signal, and the light curtain controller sends an alarm signal to the control module. The control module receives the alarm signal and sends a stop signal to the drive motor. The drive motor stops after receiving the stop signal, so that the conveyor roller 21 stops rotating. If a foreign object falls into the gap between the conveyor rollers 21, or a foreign object enters the gap between the conveyor rollers 21, the drive motor can respond quickly according to the alarm signal triggered by the light curtain controller and the stop signal sent by the control module, so that the conveyor roller 21 stops rotating in time, avoiding the passenger from being pinched by the conveyor roller 21 when picking up the fallen items, ensuring the safety of the passenger, and avoiding the collision between the foreign object and the conveyor roller 21, ensuring that the conveyor roller 21 is not scratched.

[0107] Furthermore, when a foreign object falls into the gap between the conveyor rollers 21, or when a foreign object enters the gap between the conveyor rollers 21, the drive motor stops working according to the received stop signal. After the passenger takes away the fallen foreign object, the light curtain controller triggers the alarm release signal. The timing module receives the alarm release signal and starts timing. After a preset time, the timing module sends a timing end signal to the control module. The control module receives the timing end signal and sends a restart signal to the drive motor. The drive motor receives the restart signal and restarts, driving the conveyor rollers 21 to continue rotating. After the foreign object is removed, the drive motor restarts with a delay to ensure that the passenger's hand has completely left the conveyor rollers 21 before the conveyor rollers 21 rotate, which is conducive to further ensuring the safety of passengers.

[0108] In an embodiment of the present invention, the conveying device 100 conveys the tray with luggage to the security inspection equipment 200, and the light curtain area formed by the safety protection component 30 is blocked by foreign objects, triggering an alarm signal. The control module receives the alarm signal and sends a stop signal to the drive motor. The drive motor stops after receiving the stop signal, so that the conveying roller 21 can quickly switch from the rotating state to the stopped state, effectively preventing passengers from being pinched or scratched when picking up fallen objects, and at the same time preventing fallen foreign objects from colliding with the conveying roller 21, thereby ensuring the safety of passengers and the conveying device 100.

[0109] In an optional example, the conveying component 20 includes a plurality of conveying units, the driving component includes a plurality of driving units, and the safety protection component 30 includes a plurality of light curtain units. The plurality of conveying units, the plurality of driving units, and the plurality of light curtain units are arranged in a one-to-one correspondence. Each driving unit controls the rotation of the plurality of conveying rollers 21 in the corresponding conveying unit. Each light curtain unit is used to detect whether a foreign object enters the corresponding conveying unit, and to determine whether to trigger an alarm signal or release the alarm signal.

[0110] like Figure 3As shown, the conveying process of the conveying device 100 is described below by taking three conveying units, three driving units and three light curtain units as an example.

[0111] Multiple trays carrying luggage are placed on the conveying component 20, and the multiple trays move toward the entrance end of the security inspection device 200 as the multiple conveying rollers 21 rotate. If an item falls from the tray on the first conveying unit 201, the first light curtain unit 301 sends a first alarm signal to the control module, and the control module receives the first alarm signal and sends a first stop signal to the first drive motor, so that the multiple conveying rollers 21 in the first conveying unit 201 stop rotating. Ensure that passengers can safely take out the dropped items from the conveying rollers 21.

[0112] After the first conveying unit 201 stops rotating, the multiple conveying rollers 21 in the second conveying unit 202 and the multiple conveying rollers 21 in the third conveying unit 203 are still in a rotating state, that is, when the passenger is picking up the dropped items at the first conveying unit 201, the trays placed on the second conveying unit 202 and the third conveying unit 203 are still moving forward, so that the trays placed on the second conveying unit 202 and the third conveying unit 203 continue to move toward the entrance end of the security inspection equipment 200.

[0113] If items fall from one of the multiple conveying units, the control module controls the corresponding conveying unit to stop rotating, while the other conveying units continue to rotate and the trays placed on the other conveying units continue to move, which does not affect the normal transportation of the trays on other conveying units, thereby ensuring the safety of passengers when picking up dropped items and ensuring security inspection efficiency.

[0114] In an optional embodiment, the security inspection system includes a plurality of conveying devices 100. For example, the security inspection system includes two conveying devices 100, and the two conveying devices 100 are defined as a first conveying device and a second conveying device, respectively. The first conveying device is located at the entrance end of the security inspection device 200, and is used to convey the luggage to be inspected to the security inspection device 200. The second conveying device is located at the exit end of the security inspection device 200, and is used to divert the luggage after the security inspection to different areas. For example, after the security inspection, the luggage is determined to be safe luggage, and the tray for placing the safe luggage is moved to the end of the second conveying device, and the passenger takes the luggage. After the security inspection, the luggage is determined to be suspicious luggage, and the tray for placing the suspicious luggage is moved to the transfer station of the second conveying device, and the security personnel transfer the suspicious luggage to the unpacking inspection area.

[0115] When the luggage after security check moves with the second conveying device, if any item slips from the tray and falls into the gap between the conveying rollers 21, an alarm signal is triggered, and the drive motor receives the stop signal sent by the control module and stops, so that the conveying rollers 21 stop rotating in time, effectively preventing passengers or security personnel from being pinched when picking up the fallen items.

[0116] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the security inspection system further includes a sorting device 300, which is arranged on one side of the conveying device 100. The sorting device 300 includes a tray conveying line 310 and a sorting table 320, and the tray conveying line 310 is used to convey empty trays. The sorting table 320 is arranged above the tray conveying line 310, and is suitable for pushing the tray with luggage placed on it to the conveying component 20 of the conveying device 100.

[0117] Exemplarily, the security inspection system further includes a sorting device 300 . Along the width direction of the conveying device 100 , the conveying device 100 has a first side and a second side opposite to each other. The sorting device 300 is disposed on the first side or the second side of the conveying device 100 .

[0118] The sorting device 300 includes a tray conveyor line 310 and a sorting table 320, which are arranged in sequence along the vertical direction, and the tray conveyor line 310 is located below the sorting table 320. The tray conveyor line 310 is used to convey empty trays. The height of the sorting table 320 is adapted to the height of the conveying component 20. Passengers take empty trays from the tray conveyor line 310 and place them on the sorting table 320. After putting luggage into the tray, the tray with the luggage is pushed onto the conveying roller 21 of the conveying component 20. The passenger applies external force to the tray to push the tray onto the conveying roller 21 of the conveying component 20. Alternatively, a pushing mechanism is provided on the sorting table 320, and the tray is pushed onto the conveying roller 21 of the conveying component 20 by the pushing mechanism.

[0119] In the embodiment of the present invention, the passenger takes an empty tray from the tray conveyor line 310, sorts the luggage on the sorting table 320, and puts the luggage into the tray, which is conducive to the convenience of the passenger's operation and improves the passenger's travel experience.

[0120] like Figure 5 As shown, an embodiment of the present invention further provides a security inspection method, the security inspection method comprising:

[0121] Step 110: obtaining an alarm signal, where the alarm signal is triggered by the safety protection component 30 of the conveying device 100;

[0122] Step 120: Based on the alarm signal, a stop signal is sent to the driving component of the conveying device 100 to switch the conveying component 20 of the conveying device 100 from the rotating state to the stopped state.

[0123] The security inspection system is as described above, the conveying component 20 is used to convey the tray with luggage placed thereon, the driving component is used to drive the conveying component 20 to rotate, and the safety protection component 30 is used to detect foreign objects dropped onto the conveying component 20 .

[0124] When an object in the tray falls below the conveying surface of the conveying roller 21, the light curtain is blocked by the foreign object, triggering an alarm signal, and the light curtain controller sends an alarm signal to the control module. The control module receives the alarm signal and sends a stop signal to the drive component. The drive motor receives the stop signal and stops, so that the conveying roller 21 stops rotating in time.

[0125] In an embodiment of the present invention, the light curtain controller determines whether to trigger an alarm signal based on whether the light curtain is blocked. If the alarm signal is triggered, the control module receives the alarm signal and sends a stop signal to the driving component, thereby effectively shortening the response time and enabling the conveying roller 21 to quickly switch from a rotating state to a stopped state, thereby ensuring the safety of the conveying device 100 and passengers, and ensuring the safety of the security inspection process.

[0126] like Figure 2 As shown, in an optional embodiment, the security inspection method further includes:

[0127] Acquire an alarm release signal, the alarm release signal is triggered by the safety protection component 30;

[0128] Based on the alarm release signal, a restart signal is sent to the driving component to switch the conveying component 20 from the stopped state to the rotating state.

[0129] Specifically, the conveying roller 21 stops rotating, and after the passenger or security personnel removes the fallen items, the light curtain is not blocked by foreign objects, and the light curtain controller sends a release alarm signal to the control module. The control module receives the release alarm signal and sends a restart signal to the drive motor. The drive motor receives the restart signal, and the drive motor restarts. The conveying roller 21 switches from a stopped state to a rotating state and continues to transport the pallet.

[0130] In an embodiment of the present invention, after the drive motor stops running and the foreign object is removed, the security personnel do not need to restart the drive motor by manually operating a switch or button. The drive motor is started according to the received restart signal, which is conducive to the rapid start of the drive motor and further helps to improve the security inspection efficiency.

[0131] like Figure 2 As shown, in an optional embodiment, based on the alarm release signal, a restart signal is sent to the driving component, including:

[0132] Based on the alarm release signal, a timing start signal is generated;

[0133] Based on the timing start signal, a timing end signal is obtained;

[0134] Based on the time-out signal, a restart signal is sent to the driving component.

[0135] In some embodiments, after the foreign matter is removed from the conveying roller 21, the light curtain controller sends a release alarm signal to the timing module. The timing module receives the release alarm signal and starts timing. After a preset time, the timing ends, and the timing module sends a timing end signal to the control module. The control module receives the timing end signal and sends a restart signal to the drive motor, which starts and drives the conveying roller 21 to rotate.

[0136] When the foreign object is removed and the light curtain is not blocked, the alarm signal is triggered and the drive motor restarts after a preset period of time, ensuring that the hands of the passengers or security personnel have completely left the conveyor roller 21 before the drive motor restarts, effectively preventing the hands of the personnel from being pinched by the conveyor roller 21 during the process of moving them away from the conveyor roller 21, which is beneficial to further ensure the safety of passengers and security personnel and improve the safety of security inspections.

[0137] like Figure 2 As shown, in an optional embodiment, obtaining an alarm signal includes: obtaining an alarm signal sent by any light curtain unit. Sending a stop signal to a driving component of the conveying device 100 includes: sending a stop signal to a driving unit corresponding to the light curtain unit that triggers the alarm signal.

[0138] Acquiring the alarm release signal includes: acquiring the alarm release signal sent by any light curtain unit. Sending a restart signal to the driving component includes: sending a restart signal to the driving unit corresponding to the light curtain unit that triggers the alarm release signal.

[0139] In some embodiments, the conveying device 100 includes a plurality of conveying units, a plurality of driving units, and a plurality of light curtain units, wherein the plurality of driving units correspond one-to-one to the plurality of conveying units, and the plurality of light curtain units correspond one-to-one to the plurality of conveying units.

[0140] The plurality of conveying units are sequentially a first conveying unit 201, a second conveying unit 202, a third conveying unit 203, ..., an Mth conveying unit. The plurality of driving units are sequentially a first driving motor, a second driving motor, a third driving motor, ..., an Mth driving motor. The plurality of light curtain units are sequentially a first light curtain unit 301, a second light curtain unit 302, a third light curtain unit 303, ..., an Mth light curtain unit. M is an integer greater than or equal to 2.

[0141] Multiple trays with luggage are placed on the conveying component 20, and the multiple trays move toward the entrance end of the security inspection device 200 as the multiple conveying rollers 21 rotate. If an item falls from the tray on the first conveying unit 201, the first light curtain unit 301 sends a first alarm signal to the control module, and the control module receives the first alarm signal and sends a first stop signal to the first drive motor, so that the multiple conveying rollers 21 in the first conveying unit 201 stop rotating. The passenger takes out the dropped items to ensure the safety of the passenger.

[0142] Furthermore, when the passenger takes the dropped items out of the conveyor roller 21, the foreign objects are removed, the light curtain is not blocked by the foreign objects, and the passenger's hand has not completely left the conveyor roller 21. The first light curtain unit 301 sends a release alarm signal to the timing module, and the timing module starts timing. After a preset time, the timing module sends a timing end signal to the control module. The control module receives the timing end signal and sends a first restart signal to the first drive motor. The first drive motor receives the first restart signal and drives the multiple conveyor rollers 21 in the first conveying unit 201 to continue rotating. Ensure that the personnel's hands have completely left the conveyor roller 21 before the conveyor roller 21 rotates again, further improving the safety of security inspection.

[0143] After the first conveying unit 201 stops rotating, the multiple conveying rollers 21 in the second conveying unit 202 and the multiple conveying rollers 21 in the third conveying unit 203 are still in a rotating state, that is, when the passenger is picking up the dropped items at the first conveying unit 201, the trays placed on the second conveying unit 202 and the third conveying unit 203 continue to move toward the entrance end of the security inspection device 200. This ensures the safety of the passenger when picking up the dropped items, and does not affect the transportation of the trays on other conveying units, thereby ensuring the security inspection efficiency.

[0144] In some embodiments, if an item falls from the tray transported by the Nth conveying unit, the Nth conveying unit switches from the rotating state to the stopped state. N is an integer less than M. For example, if an item falls from the tray transported by the second conveying unit 202, the second conveying unit 202 stops rotating. The third conveying unit 203 still rotates at the current target speed, and the control module sends a deceleration signal to the first drive motor, so that the first conveying unit 201 rotates at a low speed less than the target speed. It is ensured that when the passenger picks up the fallen items at the second conveying unit 202, the tray moving from the first conveying unit 201 toward the second conveying unit 202 does not collide with the stationary tray on the second conveying unit 202, so as to avoid damaging the tray and preventing the stationary tray from slipping off the conveying roller 21 after being impacted by other trays, thereby injuring passengers or security personnel, thereby ensuring the efficiency of security inspection and further ensuring the safety of the security inspection process.

[0145] The above is only a specific embodiment of the present invention, but the protection scope of this application is not limited thereto. Any changes or substitutions made within the spirit and principle of the present invention should be included in the protection scope of this application. Therefore, the protection scope of this application should be based on the protection scope of the claims.

Claims

1. A conveying device, characterized in that: include: Mounting frame; A conveying component is rotatably mounted on the mounting frame and is used to convey articles. The conveying component includes a plurality of conveying rollers arranged at intervals, and the plurality of conveying rollers form a conveying surface. A driving component, used for driving the conveying component to rotate; A safety protection component is configured to form a light curtain area on a side of the conveying surface away from the object, and trigger an alarm signal when a foreign object enters the light curtain area; as well as A control module, which is in communication with the driving component and the safety protection component; Wherein, the control module is configured to send a stop signal to the driving component based on the alarm signal, so that the conveying component switches from a rotating state to a stopped state.

2. The conveying device according to claim 1, wherein: The mounting frame includes a first mounting beam and a second mounting beam that are spaced apart; One end of the conveying roller is rotatably connected to the first mounting beam, and the other end of the conveying roller is rotatably connected to the second mounting beam; The safety protection components include: a transmitter, disposed on the first mounting beam; a receiver, disposed on the second mounting beam, wherein the transmitter and the receiver are configured to form a light beam between two adjacent conveying rollers; and The light curtain controller is connected to the receiver for determining whether to trigger the alarm signal.

3. The conveying device according to claim 2, wherein: The light curtain controller is also used to determine whether to trigger a release alarm signal; The control module is configured to send a restart signal to the driving component based on the alarm release signal, so that the conveying component switches from the stop state to the rotation state.

4. The conveying device according to claim 3, wherein: The conveying device further comprises a timing module, and the timing module is communicatively connected with the light curtain controller and the control module; The timing module is used to send a timing end signal to the control module after the light curtain controller triggers the alarm release signal after a preset time period; The control module is configured to send the restart signal to the driving component based on the timing end signal, so that the conveying component switches from the stop state to the rotation state.

5. The conveying device according to any one of claims 1 to 4, wherein: The conveying component includes a plurality of conveying units arranged in sequence; The driving component includes a plurality of driving units arranged in sequence, and the plurality of driving units correspond one to one to the plurality of conveying units; The safety protection component includes a plurality of light curtain units arranged in sequence, and the plurality of light curtain units correspond one to one to the plurality of conveying units; The control module is configured to receive the alarm signal sent by any of the light curtain units, and send the shutdown signal to the driving unit corresponding to the light curtain unit, so that the conveying unit corresponding to the driving unit switches from the rotating state to the stopped state.

6. A security inspection system, characterized in that: include: Security inspection equipment, used for security inspection of luggage; as well as The conveying device according to any one of claims 1 to 5, wherein the conveying device is arranged at the entrance end of the security inspection equipment and is used to convey the tray with luggage placed thereon to the security inspection equipment.

7. The security inspection system according to claim 6, wherein: The security inspection system further includes a sorting device, which is arranged on one side of the conveying device; The arranging device comprises: Pallet conveyor lines for conveying empty pallets; and The sorting table is arranged above the tray conveying line and is suitable for pushing the tray with luggage placed on it onto the conveying component of the conveying device.

8. A security inspection method, using the security inspection system according to claim 6 or 7, characterized in that: The security inspection method comprises: Acquiring an alarm signal, wherein the alarm signal is triggered by a safety protection component of the conveying device; Based on the alarm signal, a stop signal is sent to the driving component of the conveying device, so that the conveying component of the conveying device switches from a rotating state to a stopped state.

9. The security inspection method according to claim 8, wherein: The security inspection method further comprises: Acquire a clear alarm signal, wherein the clear alarm signal is triggered by the safety protection component; Based on the alarm release signal, a restart signal is sent to the driving component to switch the conveying component from the stop state to the rotation state.

10. The security inspection method according to claim 9, wherein: The sending a restart signal to the driving component based on the alarm release signal comprises: Based on the alarm release signal, generating a timing start signal; Based on the timing start signal, obtaining a timing end signal; Based on the timing end signal, the restart signal is sent to the driving component.

11. The security inspection method according to claim 9, wherein: The obtaining of the alarm signal comprises: obtaining the alarm signal sent by any light curtain unit; The sending of the stop signal to the driving component of the conveying device includes: sending the stop signal to the driving unit corresponding to the light curtain unit that triggers the alarm signal.

12. The security inspection method according to claim 11, wherein: The obtaining of the alarm release signal comprises: obtaining the alarm release signal sent by any of the light curtain units; The sending of the restart signal to the driving component includes: sending the restart signal to the driving unit corresponding to the light curtain unit that triggers the alarm release signal.

Images