Security check device

Abstract

The utility model provides a security check device, and relates to the technical field of security check. The security check device comprises N trays, each tray is configured to be capable of bearing a checked object, and N is an integer greater than or equal to 2; the conveyor is used for bearing the N trays and transporting the N trays along a preset path; the limiting mechanism is installed on the conveyor, and in the process that the conveyor transports the N trays, the limiting mechanism is used for limiting the distance between the adjacent trays, so that the distance is larger than or equal to a first interval, and the first interval is larger than zero; and the security inspection machine constructs an inspection channel, the inspection channel is located in the predetermined path, and when any tray is transported to the inspection channel, the security inspection machine is used for performing radiation scanning on the inspected object carried by the tray. The system provided by the utility model has the advantages of improving the passenger security check passing rate, reducing on-site security check personnel, improving the suspected luggage positioning efficiency of the security check personnel, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of security inspection, in particular to a security inspection device. Background Art

[0002] Security inspection equipment can be deployed in places with security inspection needs, such as X-ray security inspection machines at stations, subway stations, scenic spots and airports. People place their luggage on the conveyor connected to the X-ray security inspection machine in turn, waiting to be scanned by the X-ray security inspection machine for security inspection. However, when there is a large flow of people, people want to pass the security inspection quickly and will eagerly place their luggage on the conveyor, causing the luggage to pile up, making it difficult for the X-ray security inspection machine to accurately scan each piece of luggage.

[0003] For example, when the large channel security inspection equipment is used alone, it can only inspect the luggage of one person at a time, which is inefficient, and each device needs to be equipped with a security inspector to open the bag for inspection. When the large channel security inspection equipment is used in conjunction with the existing conveyor, passengers place their luggage on the conveyor continuously, and the security inspection equipment continuously inspects the luggage, which improves the efficiency of luggage inspection. However, when there are many passengers and luggage, there will be problems such as luggage accumulation and continuous placement of luggage to form overlong luggage, which will cause luggage tracking failure and make it impossible to quickly and correctly screen out suspicious luggage. Utility Model Content

[0004] In view of this, the present invention provides a security inspection device to overcome at least part of the problems in the above-mentioned prior art.

[0005] An embodiment of the utility model provides a security inspection device, comprising: N pallets, wherein each pallet is constructed to be able to carry an inspected object, and N is an integer greater than or equal to 2; a conveyor, used to carry the N pallets and transport the N pallets along a predetermined path; a limiting mechanism, installed on the conveyor, wherein, during the process of the conveyor transporting the N pallets, the limiting mechanism is used to limit the distance between adjacent pallets so that the distance is greater than or equal to a first spacing, and the first spacing is greater than zero; a security inspection machine, which constructs an inspection channel, and the inspection channel is located on the predetermined path, wherein when any of the pallets is transported to the inspection channel, the security inspection machine is used to radiate and scan the inspected object carried by the pallet.

[0006] In an embodiment of the utility model, the conveyor includes: a conveying loop line for carrying the N pallets, and the predetermined path is a circular path defined by the conveying loop line; wherein any one of the pallets is located on the conveying loop line and transported along the circular path when empty or carrying an inspected object.

[0007] In an embodiment of the utility model, the conveying loop includes an annular groove formed along the annular path, and the limiting mechanism includes: an annular belt installed in the annular groove; wherein, while the conveying loop carries the N pallets, the N pallets are each fixedly connected to the annular belt.

[0008] In an embodiment of the utility model, the conveyor includes a first driving mechanism for driving the conveying loop, and the limiting mechanism includes a second driving mechanism for driving the endless belt; wherein, after being driven, the conveying speed of the conveying loop is the same as the belt speed of the endless belt.

[0009] In an embodiment of the utility model, the limiting mechanism further includes: N connecting members corresponding one to one to the N pallets, wherein one end of each connecting member is connected to the annular belt, and the other end is connected to the corresponding pallet.

[0010] In an embodiment of the utility model, the belt surface of the annular belt is perpendicular to the bottom surface of the pallet, and the connecting member includes: a connecting block, including a first end surface and a second end surface, the first end surface is connected to the bottom surface of the corresponding pallet, and the second end surface is connected to the belt surface of the annular belt.

[0011] In an embodiment of the utility model, the limiting mechanism includes: a stop mechanism installed on the bearing surface of the conveying loop; the stop mechanism includes a first stop member and a second stop member located between adjacent pallets, wherein the distance between the first stop member and the second stop member is greater than or equal to the first spacing.

[0012] In an embodiment of the present invention, the first spacing is determined according to the size of the inspected object. When the distance between adjacent trays is greater than or equal to the first spacing, the distance between the inspected objects carried by each adjacent tray is greater than or equal to the second spacing, and the second spacing is greater than zero.

[0013] In an embodiment of the utility model, the security inspection device also includes: a measuring mechanism, which is used to measure the size of the inspected objects carried by each adjacent pallet; a controller, which is communicatively connected with the measuring mechanism and the limiting mechanism, and the controller is used to control the limiting mechanism to adjust the distance between the adjacent pallets according to the size measured by the measuring mechanism.

[0014] In an embodiment of the present invention, the distance between any pair of adjacent trays among the N trays is the same as or different from the distance between at least one other pair of adjacent trays.

[0015] In an embodiment of the utility model, the conveyor also includes: at least one alarm position, located on the predetermined path and behind the exit of the security inspection machine; the security inspection device also includes: an alarm mechanism, wherein when a pallet carrying a suspicious inspected object is transported to any of the alarm positions, the alarm mechanism is used to send an alarm signal, and the suspicious inspected object is determined based on the radiation scanning image of the security inspection machine.

[0016] The security inspection device of some embodiments of the utility model can limit the distance between adjacent trays by installing a limiting mechanism on the conveyor, thereby avoiding the situation where luggage is piled up or luggage is connected to form overlong luggage during security inspection, thereby improving the efficiency of locating suspicious luggage.

[0017] In addition, the security inspection device of some embodiments of the utility model also fixes the tray on the conveyor, so that passengers do not need to take the tray themselves, but can directly place their luggage on the tray for automatic security inspection, which is conducive to improving the security inspection pass rate of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present utility model, wherein:

[0019] Figure 1 is a structural schematic diagram of a security inspection device according to an exemplary embodiment of the present utility model from a first viewing angle;

[0020] Figure 2 is a structural schematic diagram of a security inspection device according to an exemplary embodiment of the present utility model from a second viewing angle;

[0021] Figure 3 is a schematic structural diagram of an endless belt according to an exemplary embodiment of the utility model;

[0022] Figure 4 is a cross-sectional schematic diagram of an annular groove according to an exemplary embodiment of the utility model;

[0023] Figure 5 is a schematic structural diagram of a connecting member according to an exemplary embodiment of the utility model;

[0024] Figure 6 is a simplified schematic diagram of a stop mechanism according to an exemplary embodiment of the present utility model;

[0025] Figure 7 It is a structural schematic diagram of a security inspection device according to another exemplary embodiment of the present utility model. DETAILED DESCRIPTION

[0026] In order to more clearly explain the purpose, technical solution and advantages of the utility model, the embodiments of the utility model will be described in detail in conjunction with the accompanying drawings. It should be understood that the following description of the embodiments is intended to explain and illustrate the overall concept of the utility model, and should not be understood as a limitation of the utility model. In the specification and the drawings, the same or similar reference numerals refer to the same or similar parts or components. For the sake of clarity, the drawings are not necessarily drawn to scale, and some well-known parts and structures may be omitted in the drawings.

[0027] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The wording "one" or "an" does not exclude multiple. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "top" or "bottom" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Figure 1 It is a structural schematic diagram of a security inspection device according to an exemplary embodiment of the present utility model from a first viewing angle.

[0029] like Figure 1 As shown, in this embodiment, the security inspection device 100 may include: N trays 111 , 112 , a conveyor 120 , a limiting mechanism 130 and a security inspection machine 140 .

[0030] Each of the N trays 111 and 112 is configured to carry the inspected objects 11 and 12, where N is an integer greater than or equal to 2. As an example, the inspected objects 11 and 12 may be luggage that needs to be inspected, and the luggage may be large luggage such as a trolley case and a turnover carton, or small luggage such as a handbag and a backpack. The inspected objects 11 and 12 carried by each tray may be a single large luggage or a combination of several luggages. The inspected objects 11 and 12 may be placed in a relatively fixed position by the N trays 111 and 112.

[0031] The conveyor 120 is used to carry N pallets 111, 112 and transport the N pallets 111, 112 along a predetermined path. As an example, the conveyor 120 can be a structure of a conveyor belt or rollers, carrying and transporting the N pallets 111, 112. In this embodiment, the predetermined path can be along Figure 1 A closed loop formed by the direction indicated by the arrow. In other embodiments, the predetermined path can also be a path consisting of an open straight line, a circle, or irregular curve segments. The predetermined path can be in a plane or not in a plane.

[0032] The limiting mechanism 130 is installed on the conveyor 120, wherein, during the process of the conveyor 120 transporting N pallets 111, 112, the limiting mechanism 130 is used to limit the distance d1 between adjacent pallets 111, 112, so that the distance d1 is greater than or equal to the first spacing, and the first spacing is greater than zero. The utility model does not limit the specific value of the distance d1 between each pair of adjacent pallets, and these distances can be equal or unequal, as long as these distances are greater than or equal to the first spacing, that is, these distances are at least greater than zero. In some embodiments, the first spacing can be determined according to the size of the inspected objects 11, 12, which will be further described later.

[0033] Taking tray 111 and tray 112 as an example, the distance d1 between adjacent trays 111 and 112 is the minimum distance from the right side of tray 111 to the left side of tray 112, and the distance must be greater than zero. In other words, under the restriction of the limiting mechanism 130, tray 111 and tray 112 can always maintain a certain distance during the movement to avoid contact between tray 111 and tray 112. For the N trays 111 and 112 on the entire conveyor 120, each pair of adjacent trays in the N trays 111 and 112 and the inspected objects on the trays can maintain a distance, thereby avoiding the situation where luggage is piled up during the security inspection process when there are many passengers and luggage, and the luggage is placed continuously to form overlong luggage.

[0034] The security inspection machine 140 constructs an inspection channel, which is located on a predetermined path, wherein when any pallet is transported to the inspection channel, the security inspection machine 140 is used to radiate scan the inspected object carried by the pallet. As an example, the security inspection machine 140 can be one of the security inspection equipment such as an X-ray security inspection machine or a CT scanning security inspection machine. N pallets 111, 112 pass through the security inspection machine 140 with intervals between each other, so that the security inspection machine 140 can perform radiation scans on the inspected objects 11, 12 carried on each pallet 111, 112, thereby quickly and accurately screening out suspected inspected objects. If the inspected objects 11, 12 or more inspected objects are piled together and enter the security inspection machine 140, the security inspection machine 140 cannot quickly identify the suspected inspected objects. The usual practice is that these inspected objects can only be passed through the security inspection machine 140 individually, which seriously affects the security inspection efficiency and causes chaos at the security inspection site, thereby mobilizing more security inspection personnel to assist in the security inspection work.

[0035] Please continue reading Figure 1 In some embodiments, the conveyor 120 further includes: at least one alarm position located on the predetermined path and after the exit of the security inspection machine 140. As an example, an alarm position ( Figure 1 In some other embodiments, 2, 3 or more alarm positions may be set after the exit of the security inspection machine 140 to improve the security inspection efficiency when there are many objects to be inspected. The alarm position may be close to the exit of the security inspection machine 140 or may be separated from the exit of the security inspection machine 140 by a certain distance. The utility model does not make any specific limitation, as long as it is convenient to take the inspected object 13 in the alarm position.

[0036] In this embodiment, the security inspection device 100 may further include an alarm mechanism 150. When the pallet carrying the suspicious inspected object 13 is transported to any alarm position, the alarm mechanism is used to send an alarm signal, and the suspicious inspected object is determined based on the radiation scanning image of the security inspection machine 140. As an example, the alarm mechanism 150 may be an audible and visual alarm, and an alarm mechanism 150 may be set at a position corresponding to each alarm position to remind security personnel and passengers that the inspected object at the alarm position is suspicious. The alarm mechanism 150 may be set on the side of the alarm position, or may be set above the alarm position, and the utility model does not make specific limitations.

[0037] Specifically, after the security inspection machine 140 performs radiation scanning on the inspected object 13, a radiation scanning image of the inspected object 13 is obtained, and the inspected object 13 is judged to be suspicious based on the information in the radiation scanning image. The basis for judgment may be, for example, some controlled instruments, flammable and explosive items, or illegal items, etc. There are mature existing technologies that can realize this process, which will not be repeated here. When the inspected object 13 is judged to be suspicious, the judgment result can be fed back to the alarm mechanism 150. When the suspicious inspected object 13 is transported to the corresponding alarm position, the alarm mechanism 150 issues an audible and visual alarm, and the security inspector can quickly confirm the position of the suspicious inspected object 13 according to the alarm prompt. After the security inspector determines the position of the suspicious inspected object 13, he can conduct a separate inspection, find suspicious items, and eliminate safety hazards. When the alarm mechanism 150 issues an audible and visual alarm, the conveyor 120 can suspend the conveying of the pallet, and resume the transportation of the pallet after the security inspector takes away the suspicious inspected object 13. As an example, a gravity sensor may be installed on the pallet to determine whether the inspected object 13 on the pallet has been taken away, but the present invention is not limited thereto.

[0038] Furthermore, in some extended embodiments, a scanning device may be installed at the alarm position, and a barcode, a two-dimensional code, or an RFID code may be set on each pallet. When the security inspection machine 140 detects that the inspected object on the pallet is suspicious, the suspicious information is bound to the barcode, two-dimensional code, or RFID code on the pallet. After the scanning device at the alarm position scans the barcode, two-dimensional code, or RFID code, the suspicious information is sent to the alarm mechanism 150, and the alarm mechanism 150 issues an alarm message. It can be understood that when the inspected object is judged to be not suspicious, the alarm of the alarm mechanism 150 will not be triggered when the inspected object passes through the alarm position.

[0039] Figure 2 is a structural schematic diagram of a security inspection device according to an exemplary embodiment of the present utility model from a second viewing angle; Figure 3 is a schematic structural diagram of an endless belt according to an exemplary embodiment of the utility model; Figure 4 is a cross-sectional schematic diagram of an annular groove according to an exemplary embodiment of the utility model; Figure 5 is a schematic diagram of the structure of a connector according to an exemplary embodiment of the present utility model. Figure 2 The security inspection machine 140 and the inspected objects 11, 12, 13 are omitted.

[0040] like Figure 1 and Figure 2As shown, in some embodiments, the conveyor 120 includes: a conveyor loop 121, which is used to carry N pallets 111, 112, and the predetermined path is a circular path defined by the conveyor loop; wherein any pallet 111, 112 is located on the conveyor loop when it is empty or when it carries an inspected object, and is transported along the circular path. In other words, the N pallets 111, 112 are always relatively fixedly connected to the conveyor loop of the conveyor 120.

[0041] There are some existing automated tray return systems (ATRS), which have two layers of trays, with empty trays placed on the bottom layer. Passengers need to take the trays from the bottom layer to the upper layer to load their luggage. The security check pass rate is low, and more staff are needed on site to guide and manage.

[0042] Compared with the two-layer structure of the ATRS system, the bottom layer is omitted, and passengers do not need to bend down to pick up the tray. In this way, passengers can directly place their luggage and other objects to be inspected on the tray for security inspection without having to pick up the tray. In particular, when the inspection object is large luggage, the tray that matches it is usually larger and heavier. Passengers do not need to pick up the tray themselves, which can reduce the handling during the security inspection process, thereby improving the passengers' security inspection experience.

[0043] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the conveyor loop 121 includes an annular groove formed along an annular path, and the limiting mechanism 130 includes: an annular belt 131, which is installed in the annular groove; wherein, while the conveyor loop 121 carries N pallets 111, 112, the N pallets 111, 112 are respectively fixedly connected to the annular belt 131. In other words, in this embodiment, the conveyor loop 121 is mainly used to carry the weight of the pallets and transport the pallets, while the annular belt 131 is mainly used to keep the N pallets 111, 112 at a fixed distance, and this distance is greater than zero, so as to prevent the inspected objects in the pallets from piling up during the security inspection process.

[0044] As an example, Figure 4 A cross-sectional view of one of the annular grooves is shown. The annular groove is formed in the middle of the conveying loop 121. The annular belt 131 can be installed in the annular groove by means of a tensioning wheel. The annular belt 131 can be a synchronous belt structure, which has the same annular shape as the annular path and the annular groove. The annular belt 131 can be made of non-metallic material so that the annular belt 131 does not affect the radiation scanning imaging of the security inspection machine 140 when passing through the security inspection machine 140.

[0045] like Figure 2As shown, in some embodiments, the conveyor 120 may further include a first driving mechanism (not shown in the figure) driving the conveying loop 121, and the limiting mechanism 130 includes a second driving mechanism (not shown in the figure) driving the endless belt, wherein the conveying speed of the conveying loop 121 after being driven is the same as the belt speed of the endless belt 131, that is, the conveying loop 121 and the endless belt 131 are synchronized to avoid the pulling of the N pallets 111 and 112 caused by the speed difference between the two. Specifically, when the conveying speed of the conveying loop 121 is greater than the belt speed of the endless belt 131, when the conveying loop 121 carries N pallets 111 and 112 and moves forward, the endless belt 131 will apply a backward pulling force to the N pallets 111 and 112; on the contrary, when the conveying speed of the conveying loop 121 is less than the belt speed of the endless belt 131, when the conveying loop 121 carries N pallets 111 and 112 and moves forward, the endless belt 131 will apply a continuous forward pulling force to the N pallets 111 and 112. Since the annular belt 131 is mainly used to relatively fix the distance between the N trays 111, 112, it should be avoided that the annular belt 131 generates a forward or backward pulling force on the N trays 111, 112. As an example, the first drive mechanism and the second drive mechanism can use synchronous motors, but the utility model is not limited thereto.

[0046] like Figure 1 and Figure 5 As shown, in some embodiments, the limiting mechanism 130 may further include N connecting members 132. The N connecting members 132 correspond to the N trays 111 and 112 one by one, wherein one end of each connecting member 132 is connected to the annular belt 131, and the other end is connected to the corresponding tray. The connecting member 132 may be made of a lightweight non-metallic material to avoid affecting the radiation scanning imaging of the security inspection machine 140.

[0047] In some embodiments, the connector 132 can directly connect the endless belt 131 with the corresponding pallet, improve the connection stability, and reduce the weight directly carried by the endless belt 131 to a certain extent. Specifically, the top surface of the endless belt 131 can be made flush with the conveying surface of the conveying loop 121, and the top surface of the endless belt 131 can be connected to the bottom surfaces of the N pallets 111 and 112 by bonding or bolting, and the bottom surfaces of the N pallets 111 and 112 can be made to fit the conveying surface of the conveying loop 121. The connection position of the connector 132 to the pallet can be the middle position of the bottom surface of the pallet, or it can be the front end, the rear end or other suitable position of the bottom surface. The utility model does not limit the specific connection position, as long as the reliability of the connection can be guaranteed.

[0048] In some embodiments, a tray can also be connected to the annular belt 131 through M connecting pieces 132, that is, the number of connecting pieces 132 that the limiting mechanism 130 can include is M×N. As an example, the front end and the rear end of the bottom of a tray can be connected to the annular belt 131 through one connecting piece 132 each, so as to further ensure the reliability of the connection. However, the present invention is not limited thereto.

[0049] like Figure 5 As shown, in some embodiments, the connecting member 132 can indirectly connect the annular belt 131 with the corresponding pallet. Specifically, the belt surface of the annular belt 131 (along the direction X) is perpendicular to the bottom surface of the pallet (parallel to the plane formed by the directions Y and Z). The connecting member 132 may include a connecting block 132a, and the connecting block 132a includes a first end surface and a second end surface, the first end surface is connected to the bottom surface of the corresponding pallet, and the second end surface is connected to the belt surface of the annular belt 131. As an example, the first end surface of the connecting block 132a can be connected to the bottom surface of the pallet by a first screw (not shown in the figure), and the second end surface of the connecting block 132a can be connected to the belt surface of the annular belt 131 by a second screw 132b. In this connection mode, the annular belt 131 can be connected to the corresponding pallet with a larger contact surface, thereby improving the reliability of the connection. The connecting block 132a, the first screw and the second screw 132b can all be made of lightweight non-metallic materials to avoid affecting the radiation scanning imaging of the security inspection machine 140.

[0050] Figure 6 is a simplified schematic diagram of a stop mechanism according to an exemplary embodiment of the present invention.

[0051] like Figure 1 and Figure 6 As shown, in some embodiments, the limiting mechanism 130 may include: a stop mechanism 610 between adjacent trays 621, 622, and a stop mechanism 610' between adjacent trays 622, 623, each stop mechanism being installed on the bearing surface of the conveying loop 121. The stop mechanism 610 includes a first stopper 611 and a second stopper 612 located between adjacent trays 621, 622. The stop mechanism 610' includes a first stopper 611' and a second stopper 612' located between adjacent trays 622, 623.

[0052] Taking the stopper mechanism 610 as an example, the distance between the first stopper 611 and the second stopper 612 is greater than or equal to the first spacing. That is, the distance between the first stopper 611 and the second stopper 612 is at least greater than zero. The number of stopper mechanisms 610 can be consistent with the number of pallets on the carrying surface of the conveyor loop 121. In other words, each pallet can have a first stopper and a second stopper on both sides. For example, Figure 6 In the embodiment, the tray 622 is limited to the range formed by the second stopper 612 and the first stopper 611', and the same is true for the other trays. It can be understood that the first stopper 611 and the second stopper 612 of the stopper mechanism 610 can keep the distance between the trays 621 and 622 on the bearing surface relatively fixed to avoid mutual accumulation during transportation. As an example, the first stopper 611 and the second stopper 612 can be block-shaped protrusions installed on the bearing surface (such as the belt surface of the belt) of the conveying loop 121. The block-shaped protrusions move synchronously with the conveying of the conveying loop 121, and a tray can be placed between the two block-shaped protrusions, thereby limiting the relative movement of the tray on the conveyor 120. The block-shaped protrusions can be made of lightweight non-metallic materials to avoid affecting the radiation scanning imaging of the security inspection machine 140. The utility model does not specifically limit the shape and size of the block-shaped protrusions, as long as they can meet the stop requirements.

[0053] Figure 7 It is a structural schematic diagram of a security inspection device according to another exemplary embodiment of the present utility model. Figure 7 and Figure 1 The same parts are numbered the same.

[0054] like Figure 7 As shown, in some embodiments, the first spacing can be determined according to the size of the inspected objects 11 and 12. When the distance d1 between adjacent trays 111 and 112 is greater than or equal to the first spacing, the distance d2 between the inspected objects 11 and 12 carried by adjacent trays 111 and 112 is greater than or equal to the second spacing, and the second spacing is greater than zero. In the present utility model, unless otherwise specified, the size of the inspected objects 11 and 12 mainly refers to the size along the conveying direction, for example, Figure 1 In , it can be the direction from the entrance to the exit. Figure 1, the distance d2 between the inspected objects 11 and 12 is equivalent to the distance from the rightmost side of the inspected object 11 to the leftmost side of the inspected object 12. In other words, in this embodiment, the spacing d1 between adjacent trays 111 and 112 is greater than zero, and the distance d2 between the inspected objects 11 and 12 carried by adjacent trays 111 and 112 is also greater than zero. It can be understood that for the inspected objects 11 and 12 that are some large luggage, their size may exceed the trays 111 and 112, resulting in that a part of the inspected objects 11 and 12 may be outside the trays 111 and 112. At this time, d2<d1. Although the distance d1 between the trays 111 and 112 has been set to be at least greater than zero, the distance d2 between the inspected objects 11 and 12 may be less than zero. Therefore, the first spacing can be set according to the size of the inspected objects 11 and 12, that is, the larger the size of the inspected objects 11 and 12, the larger the first spacing is, so as to ensure that d1>0 and d2>0. In this way, no matter whether the inspected objects 11 and 12 are large luggage of large size or small luggage of small size, it can be avoided that they come into contact with each other during transportation to form overlong luggage, thereby affecting the security scan.

[0055] Please continue reading Figure 7 In some embodiments, the security inspection device 700 may further include a measuring mechanism and a controller, which are not shown in the figure. The measuring mechanism is used to measure the size of the inspected objects 11 and 12 carried by the adjacent trays 111 and 112, respectively; the controller is connected to the measuring mechanism and the limiting mechanism 130 for communication, and the controller is used to control the limiting mechanism 130 to adjust the distance d1 between the adjacent trays 111 and 112 according to the size measured by the measuring mechanism.

[0056] As an example, the measuring mechanism can be at least one of a camera or a light barrier. For example, the camera can be set directly above the inspected objects 11 and 12 to take photos of the inspected objects 11 and 12 to calculate their sizes. For example, the light barrier can be set on both sides of the inspected objects 11 and 12 to calculate their sizes based on the time it takes for the inspected objects 11 and 12 to pass through the light barrier and the moving speed of the inspected objects 11 and 12. After the measuring mechanism measures the size of the inspected objects 11 and 12, the size data is sent to the controller, and the controller can compare the received size data with the preset size data. If the received size data is greater than the preset size data, a control signal can be sent to the limit mechanism 130 to cause the limit mechanism 130 to increase the distance d1 between the adjacent trays 111 and 112. If the received size data is less than or equal to the preset size data, there is no need to adjust the distance d1 between the adjacent trays 111 and 112. In other words, in this embodiment, the limiting component in the limiting mechanism 130 can be movably connected to the conveyor 120, and the distance d1 between adjacent trays 111 and 112 can be dynamically adjusted according to the size of the inspected objects 11 and 12. In this way, the distance d1 between adjacent trays 111 and 112 can be adapted to the size of the inspected objects 11 and 12, and while avoiding the inspected objects 11 and 12 from contacting each other during transportation to form overlong luggage, the trays on the conveyor 120 can be kept relatively compact, thereby improving space utilization.

[0057] For example, in an embodiment using a synchronous belt and a connecting block, the connecting block can be movably connected to the first track, and the first track is arranged on the belt surface of the synchronous belt and extends along the length direction of the synchronous belt. The connecting block and the first track can be fixed by a fixing member, such as a telescopic rod, one end of which is fixed on the first track, and the other end can be telescopically moved in and out of the hole on the connecting block, so as to fix the connecting block, or allow the connecting block to be controlled to move along the first track. In an embodiment using a stop mechanism, the first stopper and the second stopper can be movably connected to the second track. The second track can be arranged at the edge of the conveyor, and the first stopper and the second stopper extend toward the middle of the conveyor to stop the pallet. The first stopper and the second stopper can be fixed to the second track respectively by a fixing member, such as a telescopic rod, one end of which is fixed on the second track, and the other end can be telescopically moved in and out of the hole on the corresponding first stopper or the second stopper, so as to fix the stopper, or allow the stopper to be controlled to move along the second track.

[0058] Please continue reading Figure 7In some embodiments, the distance d1 between any pair of adjacent trays 111, 112 among the N trays 111, 112, 711, 712 can be made the same as or different from the distance d1' between at least one other pair of adjacent trays 711, 712. As an example, after the measuring mechanism measures the size of the inspected objects 11, 12, 71, 72, the size data is sent to the controller, and the controller can control the limiting mechanism 130 according to different sizes to dynamically adjust the distance d1 between any pair of adjacent trays 111, 112 and the distance d1' between at least one other pair of adjacent trays 711, 712. If the size of the inspected objects 11, 12 carried on the adjacent trays 111, 112 is larger, the distance d1 is increased; if the size of the inspected objects 71, 72 carried on the adjacent trays 711, 712 is smaller, the distance d1' is reduced, and vice versa. In summary, the size between any two of the inspected objects 11, 12, 71, 72, such as the size along the conveying direction, can be the same or different. The distance d1 and the distance d1' can be dynamically adjusted according to the size of the inspected objects 11, 12, 71, 72, so as to cope with multiple inspected objects of different sizes. While avoiding the formation of over-long baggage, the trays on the conveyor 120 can be arranged more compactly, thereby further improving the space utilization rate.

[0059] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A security inspection device, characterized in that: include: N trays, each of which is configured to carry an object to be inspected, and N is an integer greater than or equal to 2; A conveyor, used for carrying the N pallets and transporting the N pallets along a predetermined path; A limiting mechanism is installed on the conveyor, wherein, during the process of the conveyor transporting the N pallets, the limiting mechanism is used to limit the distance between adjacent pallets so that the distance is greater than or equal to a first distance, and the first distance is greater than zero; The security inspection machine is configured with an inspection channel, wherein the inspection channel is located on the predetermined path, wherein when any of the pallets is transported to the inspection channel, the security inspection machine is used for radiation scanning of the inspected object carried by the pallet.

2. The security inspection device according to claim 1, characterized in that: The conveyor comprises: A conveyor loop, used for carrying the N pallets, wherein the predetermined path is a circular path defined by the conveyor loop; Wherein, any of the trays, when empty or carrying an object to be inspected, is located on the conveying loop and transported along the circular path.

3. The security inspection device according to claim 2, characterized in that: The conveying loop includes an annular groove formed along the annular path, and the limiting mechanism includes: an annular belt, mounted in the annular groove; Wherein, while the conveyor loop carries the N pallets, each of the N pallets is fixedly connected to the endless belt.

4. The security inspection device according to claim 3, characterized in that: The conveyor includes a first driving mechanism that drives the conveying loop, and the limiting mechanism includes a second driving mechanism that drives the endless belt; Wherein, after being driven, the conveying speed of the conveying loop is the same as the belt speed of the endless belt.

5. The security inspection device according to claim 4, characterized in that: The limiting mechanism also includes: N connecting members correspond to the N trays one by one, wherein one end of each connecting member is connected to the annular belt, and the other end is connected to the corresponding tray.

6. The security inspection device according to claim 5, characterized in that: The belt surface of the annular belt is perpendicular to the bottom surface of the tray, and the connecting member includes: The connecting block comprises a first end surface and a second end surface, wherein the first end surface is connected to the bottom surface of the corresponding tray, and the second end surface is connected to the belt surface of the annular belt.

7. The security inspection device according to claim 2, characterized in that: The limiting mechanism comprises: A stopper mechanism is installed on the bearing surface of the conveying loop; The stopping mechanism comprises a first stopping member and a second stopping member located between adjacent trays, wherein a distance between the first stopping member and the second stopping member is greater than or equal to the first spacing.

8. The security inspection device according to any one of claims 1 to 7, characterized in that: The first spacing is determined according to the size of the inspected object. When the distance between adjacent trays is greater than or equal to the first spacing, The distance between the inspected objects carried by adjacent trays is greater than or equal to a second interval, and the second interval is greater than zero.

9. The security inspection device according to claim 8, characterized in that: The security inspection device also includes: A measuring mechanism, used to measure the size of the inspected objects carried by each of the adjacent pallets; A controller is communicatively connected with the measuring mechanism and the limiting mechanism, and the controller is used to control the limiting mechanism to adjust the distance between adjacent trays according to the size measured by the measuring mechanism.

10. The security inspection device according to claim 9, characterized in that: The distance between any pair of adjacent trays among the N trays is the same as or different from the distance between at least one other pair of adjacent trays.

11. The security inspection device according to claim 1, characterized in that: The conveyor also includes: At least one alarm position, located on the predetermined path and behind the exit of the security inspection machine; The security inspection device also includes: An alarm mechanism, wherein when a pallet carrying a suspicious object to be inspected is transported to any of the alarm positions, the alarm mechanism is used to send out an alarm signal, and the suspicious object to be inspected is determined based on the radiation scanning image of the security inspection machine.

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