CN117680374A - Sorting machine and logistics inspection system comprising same - Google Patents

Abstract

The present disclosure provides a sorter, comprising: a frame comprising N rows of pockets facing the objects to be sorted, each row comprising at least one of said pockets; m sorting units, wherein each sorting unit is arranged in a corresponding grid, and N and M are integers greater than or equal to 2; wherein each of the sorting units comprises: at least two rollers, each configured to rotate during sorting; the belt-shaped piece is sleeved on at least two rollers to form a belt surface, the belt surface is in contact with the objects to be sorted, and the belt-shaped piece is configured to drive the objects to be sorted to move through movement of the belt surface in the sorting process. The present disclosure also provides an object inspection system including a sorter as above.

Description

Sorting machine and logistics inspection system comprising same

Technical Field

The present disclosure relates to the field of object inspection, radiation scanning, security inspection, or other fields, and more particularly, to sorters and logistics inspection systems including the same.

Background

In fields such as logistics, security inspection and express delivery, people have higher and higher requirements on object inspection speed. In the whole object inspection process, an object to be inspected is generally transported to a security inspection machine first, then the object to be inspected receives ray scanning in an inspection channel of the security inspection machine, then the object is transported to a sorting machine after the scanning is completed, the object is sorted to a corresponding branch according to a judgment drawing conclusion of a ray scanning image, for example, if suspicious objects exist, the object is sorted to an unpacking branch for unpacking inspection.

In the related art, a type of sorting machine employs a balance sorting machine. Balance wheel sorting machines use balance wheels to sort objects, in particular, balance wheels are in line contact with objects to be sorted, and friction is generated between the balance wheels and the objects to be sorted in a rotating process through the line contact mode, so that the objects to be sorted move.

In the process of implementing the inventive concept of the present disclosure, the inventor found that, for irregular objects, such as gunny bags, vegetables or objects with non-planar bottoms, the line contact manner frequently causes the problem of not being able to sort normally, resulting in congestion on the sorting machine. Therefore, the problem that the existing balance wheel sorting machine is insufficient in sorting capability for irregular packages is urgent to be solved.

Disclosure of Invention

In view of the foregoing, the present disclosure provides a sorter and a logistics inspection system including the same.

In one aspect of the disclosed embodiments, there is provided a sorter comprising: a frame comprising N rows of pockets facing the objects to be sorted, each row comprising at least one of said pockets; m sorting units, wherein each sorting unit is arranged in a corresponding grid, and N and M are integers greater than or equal to 2; wherein each of the sorting units comprises: at least two rollers, each configured to rotate during sorting; the belt-shaped piece is sleeved on at least two rollers to form a belt surface, the belt surface is in contact with the objects to be sorted, and the belt-shaped piece is configured to drive the objects to be sorted to move through movement of the belt surface in the sorting process.

According to an embodiment of the disclosure, each sorting unit is independently and detachably placed in a corresponding compartment.

According to an embodiment of the disclosure, each row of cells is arranged along a first direction, and two adjacent cells in the same row are overlapped along a central line of the first direction; for any two adjacent rows of the lattice openings, the lattice openings in the two rows are arranged in a staggered mode, the staggered arrangement comprises that the central lines of any two lattice openings between the two rows are not coincident along the second direction, and the second direction is perpendicular to the first direction.

According to an embodiment of the disclosure, for any two adjacent rows of cells, one row has K1 cells and the other row has K2 cells, K1 and K2 are not equal, and K1 and K2 are integers greater than or equal to 1.

According to an embodiment of the present disclosure, K1 is an integer greater than or equal to 2, K2 is equal to the value of K1 plus 1, for a row of K1 ports, where each port is located between two ports in another row, the center line of the three ports is triangular.

According to embodiments of the present disclosure, each of the pockets is substantially circular, the strap face within each of the pockets is substantially rectangular, the width of the strap face is less than the diameter of the pocket, and/or the length of the strap face is less than the diameter of the pocket.

According to an embodiment of the present disclosure, in a third direction perpendicular to the tape surface, the orthographic projection of the contour of the tape surface intersects the orthographic projection of the contour of the located pocket.

According to an embodiment of the present disclosure, each of the sorting units further comprises: a first driving unit configured to drive at least two of the rollers to rotate; and a second driving unit configured to drive the belt to rotate so as to move the belt face.

According to an embodiment of the present disclosure, each of the sorting units further comprises: a carrying unit configured to be rotatably mounted in a corresponding pocket, at least two of the rollers and the belt being mounted to the carrying unit; wherein the carrying unit is configured to change a sorting direction of the objects to be sorted by rotating by a certain angle.

Another aspect of an embodiment of the present disclosure provides an object inspection system, comprising: a transport device comprising a first transport mechanism and a third transport mechanism for transporting objects to be sorted; a radiation scanning device comprising a second transport mechanism configured to transport an object to be sorted from the first transport mechanism to a radiation scanning area and to transport the object to be sorted to the third transport mechanism; a sorter as in any of the preceding claims in connection with the third conveyor, the sorter being configured to sort objects to be sorted from the third conveyor to a target sorting branch.

According to an embodiment of the present disclosure, the radiation scanning apparatus includes: the first shielding door curtain comprises at least two door curtains, a first distance is reserved between every two adjacent door curtains, and the first shielding door curtain is arranged at the inlet side close to the first conveying mechanism; the second shielding door curtain comprises at least two door curtains, a second distance is reserved between every two adjacent door curtains, and the second shielding door curtain is arranged at the outlet side close to the third conveying mechanism; wherein each door curtain is a single-layer door curtain, and the first distance is the same as or different from the second distance.

According to an embodiment of the present disclosure, an inspection channel is defined between the inlet side and the outlet side, the single layer door curtain comprising: s sheets of door curtains are arranged in parallel between any two adjacent door curtains, and S is an integer greater than or equal to 2; wherein the ratio of the width of each door curtain to the width of the inspection channel is about 1:30, and/or the width of each door curtain is greater than 0 mm and less than 100 mm.

One or more of the above embodiments have the following advantages:

1) A sorter using a face contact approach is provided. For every letter sorting unit, provide the strip cover and establish and form the area of area on two at least gyro wheels, and through area of area and waiting to sort the object contact can compare the line contact and have bigger area of contact, even irregular object also can keep the contact, and then provide frictional force and drive waiting to sort the object and remove, improved the letter sorting ability of sorter, to the adaptability reinforcing of waiting to sort the object of different shapes.

2) The utility model provides a commodity circulation inspection system including above-mentioned sorting machine, this commodity circulation inspection system's ray scanning device includes first shielding curtain and second shielding curtain, and both respectively include at least twice curtain, and every curtain is the design of individual layer curtain, can reduce the curtain and treat the barrier of sorting object when meeting the shielding requirement, improves the rate of passing of waiting to sort object.

Drawings

The foregoing and other objects, features and advantages of the disclosure will be more apparent from the following description of embodiments of the disclosure with reference to the accompanying drawings, in which:

fig. 1 schematically shows a schematic view of a prior art balance sorter;

fig. 2 schematically shows a schematic line contact of a balance of the balance sorter of fig. 1 with an object to be sorted;

FIG. 3 schematically illustrates an application scenario diagram of an object inspection system according to an embodiment of the present disclosure;

fig. 4 schematically illustrates a block diagram of a sorting area according to an embodiment of the present disclosure;

fig. 5 schematically illustrates a perspective view of a sorter according to an embodiment of the present disclosure;

fig. 6 schematically illustrates a top view of the sorter of fig. 5 viewed in the z-direction according to an embodiment of the present disclosure;

FIG. 7 schematically illustrates a schematic of a line contact versus a face contact in accordance with an embodiment of the present disclosure;

Fig. 8 schematically illustrates a schematic view of loading and unloading of a sorting unit according to an embodiment of the present disclosure;

fig. 9 schematically illustrates a top view of a sizer according to an embodiment of the present disclosure;

FIG. 10a schematically shows a block diagram of a door curtain of a security check machine in the related art;

FIG. 10B schematically shows a schematic cross-sectional view along line B-B in FIG. 10 a;

FIG. 11 schematically illustrates a schematic view of a single layer door curtain according to an embodiment of the present disclosure; and

fig. 12 schematically illustrates a schematic view of a single layer door curtain installed in an inspection tunnel according to an embodiment of the present disclosure.

The reference numerals referred to in the above figures are as follows:

1. balance wheel sorting machine; 11. a balance wheel; 100. an object inspection system; 110. a transport device; 111. a first transport mechanism; 112. a third transport mechanism; 1124. a second trigger mechanism; 113. a sorter; 114. a release branch; 1141. a third trigger mechanism A; 115. opening a detection branch; 1151. a third trigger mechanism B; 120. a radiation scanning device; 121. checking the channel; 122. a first shielding door curtain; 123. a second shielding door curtain; 130. a control device; 140. an identification device; 150. a graph judging device; 200. an object; 201. luggage; 1131. a frame; 11311. a grid; 1132. a sorting unit; 11321. a roller; 11322. a band; 113221, a belt surface; 11323. a carrying unit; 901. triangle.

It is noted that in the drawings for describing embodiments of the present disclosure, the dimensions of the overall/partial structure or the overall/partial region may be exaggerated or reduced for clarity, i.e., the drawings are not drawn to actual scale.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is only exemplary and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure.

Fig. 1 schematically shows a schematic view of a prior art balance sorter. Fig. 2 schematically shows a schematic line contact of the balance sorter of fig. 1 with an object to be sorted.

In the related art, the defects of the lead door curtain blocking of the security inspection machine and the sorting capability of the sorting machine of the object inspection system are two problems to be treated. For example, the balance sorter 1 shown in fig. 1 has insufficient sorting capacity for profiled packages, which is prone to congestion of packages at the sorter. Specifically, if the types of goods to be inspected in an airport are complicated, standard paper box packages, various gunny bags, plastic bags and even irregular articles such as frozen meat are available, the surface of the balance wheel sorting machine 1 is a balance wheel 11, and the contact with the packages is line contact (see fig. 2). Balance sorter 1 can sort standard cartons normally, but irregular gunny bags frequently cannot sort normally, so that packages are jammed on the sorter. In addition, for example, due to the blocking of a lead door curtain of the security inspection machine, when packages with reasonable package spacing pass through the security inspection machine door curtain, continuous packages are formed, so that the tracking and sorting of the packages by the wire body are affected.

Some embodiments of the present disclosure provide sorters using a face contact approach. For every letter sorting unit, provide the strip cover and establish and form the area of area on two at least gyro wheels, and through area of area and waiting to sort the object contact can compare the line contact and have bigger area of contact, even irregular object also can keep the contact, and then provide frictional force and drive waiting to sort the object and remove, improved the letter sorting ability of sorter, to the adaptability reinforcing of waiting to sort the object of different shapes.

According to the logistics inspection system, the shielding requirements are met, meanwhile, blocking of the door curtain to the objects to be sorted can be reduced, and the passing rate of the objects to be sorted can be improved.

The object inspection system, sorter, curtain, etc. provided by the embodiments of the present disclosure are further described below with reference to fig. 3-12.

Fig. 3 schematically illustrates an application scenario diagram of an object inspection system according to an embodiment of the present disclosure. It should be noted that fig. 3 is merely an example to which embodiments of the present disclosure may be applied to assist those skilled in the art in understanding the technical content of the present disclosure, but does not mean that embodiments of the present disclosure may not have other devices, systems, or other environments and scenarios.

As shown in fig. 3, the object inspection system 100 according to this embodiment includes a transportation device 110 and a security inspection machine. The security inspection machine includes a radiation scanning device 120 and a control device 130. The transporting device 110 includes a first transporting mechanism 111 and a third transporting mechanism 112 that transport the objects 200 to be sorted; the ray scanning apparatus 120 includes a second transporting mechanism (not shown in the figure) configured to transport the object 200 to be sorted from the first transporting mechanism 111 to a ray scanning area (not shown in the figure) and transport the object 200 to be sorted to the third transporting mechanism 112; the control device 130 is in communication with the transport device 110 and the radiation scanning device 120; wherein the transport device 110, the radiation scanning device 120 and the control device 130 adopt a unified communication protocol, and the transport device 110 is configured to control the operation of the second transport mechanism through the control device 130.

For example, any one of the first transporting mechanism 111, the second transporting mechanism, and the third transporting mechanism 112 may take the form of a conveyor belt, a conveyor roller, or a rail. For example, the transfer roller may comprise a motorized drum and a plurality of follower drums, which may be driven by a servo motor, with the drums being connected by a belt. The first, second and third transporting mechanisms 111, 112 may each transport the objects 200 and/or pallets to be sorted for security inspection. As shown in fig. 3, the objects 200 to be sorted can be moved by the entrance of the first transport mechanism 111 along the dashed arrow, the path-ray scanning device 120 to the sorting machine 113 and sorted to the individual sorting branches.

Illustratively, the security check machine may include a control device 130, a housing, a radiation scanning device 120, and a second transport mechanism. The security inspection machine shell forms a containing space for installing and protecting each functional component therein. An inspection channel is arranged in the security inspection machine shell, and a second conveying mechanism, such as a belt conveyor, is arranged in the inspection channel. Wherein, set up the security inspection entry and the security inspection export at the both ends of intercommunication second transport mechanism both ends respectively at the both ends of security inspection machine shell. A radiation scanning device 120 is arranged in the examination tunnel for imaging the object 200 to be examined in a radiation scanning zone by emitting an X-ray beam.

For example, the radiation scanning apparatus 120 may include one or more than one radiation source adapted to generate an X-ray beam. The radiation scanning device 120 may also include a detector. The ray source emits rays toward the object to be sorted 200, and the detector detects the rays after the rays react with the object to be sorted 200, so that the inspection of the object to be sorted 200 can be completed. For example, an X-ray source emits radiation toward the object to be sorted 200 conveyed on the inspection path, and a detector detects the radiation transmitted through the object to be sorted 200 to obtain a scanned image. For example, a plurality of ray sources time-divisionally emit X-rays from a plurality of angles toward the object to be sorted 200 and detect rays transmitted through the object to be sorted 200 each time, and a scan image of the object to be sorted 200 is formed by processing the detection signals.

In some embodiments, the control device 130 may be implemented by a PLC (Programmable Logic Controller ). The control device 130 is communicatively connected to the transport device 110 and the radiation scanning device 120 via a network. The media used by the network to provide the communications links may include various connection types, such as wired, wireless communications links, or fiber optic cables, etc. As a unified communication protocol, PPI communication protocol, MPI (multipoint interface) communication protocol, profinet communication protocol, etc. may be used. The programmable controller consists of CPU, instruction and data memory, I/O interface, power source, digital-analog conversion and other functional units, and has powerful logic operation function and capacity of adapting to industrial control environment. In other embodiments, a microprocessor, computer, server, or the like may also be employed as the control device 130.

In some embodiments, the control device 130 may issue control instructions to the transport device 110 and the radiation scanning device 120, such as controlling the start and stop of each transport mechanism, transport speed, radiation emission and reception, and the like. For example, several triggering mechanisms, such as light barriers, may be disposed on the transporting device 110 and the ray scanning device 120 to track the objects 200 to be sorted, and trigger the photoelectric correlation sensors included in the light barriers and send triggering signals to the control device 130 after the objects 200 to be sorted reach the light barriers. The control device 130 records the current position of the object to be sorted 200 after receiving the trigger signal corresponding to the light barrier. It should be noted that, the trigger signal may be directly or indirectly sent to the control device 130, and indirectly refers to that the trigger signal is collected by a control module on the transportation device 110 and then sent to the control device 130 by the control module.

Illustratively, the objects to be sorted 200 may include vehicles, containers, baggage 201, or other items, such as various materials in a materials analysis scenario, such as in a security inspection scenario.

In the related art, in the automatic transformation of an actual goods yard, the problem that a security inspection machine manufacturer and a line body manufacturer are about whether the security inspection machine rewinds the jigsaw often generates divergence. The security inspection machine manufacturer considers package scanning image integrity, when the security inspection machine is required to stop taking, rewinding jigsaw is carried out, the line body manufacturer considers package tracking stability, the security inspection machine is hoped to avoid rewinding, and the package scanning image integrity and the line body manufacturer are difficult to reconcile. The solutions adopted in most of the current sites are: the security inspection machine cancels the rewinding jigsaw, and the incomplete image caused by the tape stop is processed according to the open inspection. However, this is not a perfect solution, and for sites with limited field conditions, which require frequent stoppages, a proportion of packages may be taken to the pick-up side.

In some embodiments, for example, the transport device 110 may send control requests to the control device 130 to control operation of the second transport mechanism, including start, stop, and acceleration and deceleration, among others. Thus, through the integrated design, the integrated control of the conveying device 110 and the conveying mechanism (namely the second conveying mechanism) of the security inspection machine can be realized, the conveying operation of the objects 200 to be sorted between the conveying device and the second conveying mechanism is coordinated, and the pause and delay when the objects 200 to be sorted are delivered between the conveying device and the second conveying mechanism are reduced. In tracking the object to be sorted 200, through the integrated design, the transportation path and speed of the object to be sorted 200 can be accurately controlled through continuous positioning of the object to be sorted 200, and position misjudgment is reduced.

According to the embodiment of the disclosure, an integrated object inspection system 100 is provided, in which a transportation device 110, a radiation scanning device 120 and a control device 130 are connected by adopting a unified communication protocol to implement an integrated solution, and the transportation device 110 is configured to control the operation of a second transportation mechanism through the control device 130 to implement unified transportation control of an object 200 to be sorted in an inspection process, so that no interconnection interface between different systems is required to be added, maintenance and upgrade convenience is improved, and the mutual influence of the transportation device 110 and the radiation scanning device 120 can be avoided to implement the effects of accurate tracking and efficient inspection.

In some embodiments, the object inspection system 100 further includes a graph determining device 150, where the graph determining device 150 is at least communicatively connected to the ray scanning device 120 using a unified communication protocol, and the graph determining device 150 is configured to obtain a scanned image obtained by the ray scanning device 120 scanning the object 200 to be sorted, and obtain a graph conclusion of the scanned image.

For example, in security inspection in public places such as highways, railway stations, airports, and the like, the radiation scanning device 120 obtains a scanned image of the baggage 201 in a radiation scanning area. The scanned image may then be sent directly by the radiation scanning device 120 to the image determining device 150, or the scanned image may be obtained by the control device 130 and then sent to the image determining device 150. Then, the image judging device 150 can be allocated to a security inspector for image interpretation, and the image inspector judges the X-ray image according to the X-ray image per se and by personal experience and gives an interpretation conclusion. The image judging device 150 can also call an automatic image judging system to recognize the scanned image, and automatically obtain an image judging conclusion. The decision graph includes whether contraband is contained. The graph interpretation means 150 may display scanned image information and graph interpretation results.

According to the embodiment of the disclosure, the graph judging device 150, the control device 130, the transportation device 110 and the ray scanning device 120 adopt a unified communication protocol, so that unified interfaces and protocol standardization among the devices are realized, the compatibility problem of communication among the devices is reduced, and the speed and the integrity of information obtained by the graph judging device 150 are improved.

In some embodiments, the object inspection system 100 further includes an identification device 140, where the identification device 140 is disposed on a path along which the first transport mechanism 111 transports the objects 200 to be sorted, and is communicatively connected to at least the transport device 110 using a uniform communication protocol; the recognition means 140 are configured to scan the labels of the objects 200 to be sorted passing through their recognition areas and to generate a second identification for recording the objects 200 to be sorted and to send the second identification to the transportation means 110.

For example, the bar code or two-dimensional code label is attached to the object 200 to be sorted, and the identifying device 140 may generate the second identifier by scanning the label and transmit the second identifier to the transporting device 110 to facilitate tracking records of the identified object. The transportation device 110 may be directly transmitted to the transportation device 110, or may be transmitted to the control device 130, where the control device 130 performs recording and data processing according to the second identifier, and generates a corresponding control instruction to the transportation device 110.

In some embodiments, the transport device 110 is configured to generate a first identification for the object to be sorted 200 and to send the first identification to the radiation scanning device 120 when the object to be sorted 200 triggers a first trigger mechanism on the radiation scanning device 120, wherein the first trigger mechanism is located between a first radiation beam and a second radiation beam of the radiation scanning device 120; the ray scanning apparatus 120 is configured to send the first identification of the object 200 to be sorted and the scanned image to the graph determining apparatus 150.

For example, the first triggering mechanism includes a photoelectric correlation sensor having a transmitting end and a receiving end, wherein the transmitting end emits red light or infrared light, and the receiving end receives the red light or the infrared light, and cuts off the red light or the infrared light when the object 200 to be sorted passes through. In this embodiment, the ray scanning device 120 may directly send the first identifier and the scanned image of the object 200 to be sorted to the image determining device 150, or the control device 130 may replace the ray scanning device 120 to receive the first identifier, obtain the scanned image, and send the scanned image to the image determining device 150. Wherein the first identifier is used for tracking the object to be sorted 200 by the object inspection system 100 itself, such as the transportation device 110 or the control device 130, and the second identifier is used for recording the tracking and transportation of the object to be sorted 200 at the inspection site.

According to an embodiment of the present disclosure, the position of the first triggering mechanism is selected such that the transport device 110 and the radiation scanning device 120 interact with information, avoiding a situation in which tracking is inaccurate during rewinding.

In some embodiments, after receiving the second identifier sent by the identifying device 140, the transporting device 110 is configured to send the first identifier and the second identifier of the object to be sorted 200 to the ray scanning device 120; the ray scanning apparatus 120 is configured to send the first identification, the second identification and the scanned image of the object 200 to be sorted to the graph determining apparatus 150. So that the graph judging device 150 can obtain and display the complete information of the objects 200 to be sorted.

In some embodiments, the conveyor 110 further includes a sorter 113 coupled to the third conveyor 112, the sorter 113 configured to sort objects 200 to be sorted from the third conveyor 112 to a target sorting branch. For example, the conveyor 110 is configured to obtain a first identification and a graph conclusion of the object to be sorted 200, and to control the sorting machine 113 to sort the object to be sorted 200 based on the first identification and the graph conclusion of the object to be sorted 200.

For example, the third transporting mechanism 112 is provided with a triggering mechanism for tracking objects, when the object to be sorted 200 arrives at the sorting machine 113, the graph judging device 150 sends a first identification and graph judging conclusion to the control device 130, and the control device 130 generates a sorting control instruction to the transporting device 110 based on the first identification and graph judging conclusion of the object to be sorted 200, so as to drive the sorting machine 113 to perform corresponding sorting operation.

Fig. 4 schematically illustrates a block diagram of a sorting area according to an embodiment of the present disclosure.

In some embodiments, the transporting device 110 further comprises at least one sorting branch connected to the sorting machine 113, the third transporting mechanism 112 is provided with a second triggering mechanism 1124, each sorting branch is provided with a third triggering mechanism, the control device 130 is configured to check the sorting result according to the time difference between the second triggering mechanism 1124 of the object to be sorted 200 and the third triggering mechanism of the target sorting branch, and the target sorting branch is determined according to the first identification and the graph conclusion of the object to be sorted 200.

Referring to fig. 3 and 4, the objects 200 to be sorted are transported from the third transporting mechanism 112 to the sorting machine 113, the sorting machine 113 performs sorting according to the instruction of the control device 130, if the objects 200 to be sorted are safe, the objects directly enter the release branch 114, and if the objects 200 to be sorted are suspicious, the objects are transported to the open inspection branch 115 to continue to be transported, so that the suspicious objects 200 to be sorted can be subjected to unpacking inspection later.

For example, during an inspection of the item of baggage 201, after the item of baggage 201 triggers a light barrier in the second trigger mechanism 1124, the control device 130 initiates a corresponding timing based on the first and second identifications of the item of baggage 201. If the target sorting leg is the discharge leg 114, the timing is stopped when the baggage 201 triggers the third triggering mechanism A-1141 thereon.

In some embodiments, the control device 130 is configured to control the sorter 113 to stop operating when the time difference exceeds a preset threshold.

For example, when the sorting machine 113 sorts the baggage 201, the baggage 201 is jammed, the operation is stopped, or the sorting is wrong, so that the baggage 201 cannot reach the target sorting branch for a long time, the time difference exceeds a preset threshold (such as 30 seconds, which is only an example), and the operation of the sorting machine 113 is stopped in time for checking reasons.

In some embodiments, the sorting branch is configured to transport the objects 200 to be sorted thereon to a designated location, and the control device 130 is configured to: when the object to be sorted 200 triggers the third triggering mechanism of the non-target sorting leg, the non-target sorting leg is controlled to stop transporting.

The target sorting leg of the baggage 201 is, for example, the discharge leg 114, but is sorted to the open-check leg 115, and the third triggering mechanism B-1151 of the open-check leg 115 is triggered. Whether or not the time difference is within the preset threshold, the open-check branch 115 is stopped to continue transporting the baggage 201, and the error is corrected in time. In addition, the operation of the sorter 113 may be stopped together so as not to cause accumulation.

Taking an airport as an example, when a package passes through the sorting machine 113, the sorting machine 113 distributes the package to the sorting branch 115 according to instructions, if the sorting machine 113 has abnormal package distribution, the sorting machine 113 may cause the sorting package to be misplaced to the release branch 114, which is a serious safety problem in an airport freight system.

According to the embodiment of the disclosure, secondary verification processing before and after package sorting is provided, so that the package is ensured to enter a correct branch. Referring to fig. 4, the package entering sorter 113 is continuously tracked and is determined whether it enters the corresponding open or clear leg 114 by the clear direction and open direction light barrier information. If the open check package enters the release leg 114, the system will immediately stop and alert the security personnel to proceed with the corresponding process.

In some embodiments, referring to fig. 3, the transport device 110 may be a BHS (Baggage Handling System ), the first transport mechanism 111 is an entrance BHS, and may include a 2-section 1-meter long conveyor belt that may perform a bag pulling function to pull the package spacing to the system's desired bag spacing, such as a bag spacing of 0.5 meters. Specifically, after detecting that one object 200 to be sorted is sent out through the light barrier, waiting for a certain time to send out the next object 200 to be sorted, and realizing bag pulling.

The identification device 140 may include an ATR (Automatic Target Recognition, automatic target identification) automatic code scanning system located at the front end of the XIS, an AliS system (five-sided scanning) using SICK riding on the entrance conveyor. Package barcode information (i.e., a second identifier) may be obtained and transferred via the BHS interface in response to an XIS (X-ray Inspection System, X-ray inspection system, i.e., radiation scanning device 120) request. The BHS directly or indirectly (e.g., via the control device 130) receives the package barcode information of the ATR automatic barcode scanning system, tracks the package, and transmits the barcode information to the XIS at a fixed position (first trigger mechanism position), so that the XIS can bind the package image with the package barcode information conveniently.

The XIS transmits and scans the package, transmits the X-ray image and the package bar code information to a remote graph judging system through a network, and feeds back the package bar code information and graph judging conclusion to the BHS interface.

The image determining device 150 may include a local image determining system or a remote image determining system, and is interconnected with the XIS through a network to implement functions of X-ray image distribution, storage, remote image determining, etc.

The third transport mechanism 112 serves as an exit BHS and is located at the rear end of the XIS and includes several conveyor sections (custom configured according to site requirements), a 1 meter sorter 113, a turn conveyor section, and a return conveyor section (by way of example only). Packages from the XIS may be received and released and sorted according to the decision. And continuously tracking the released and checked packages to ensure that the released and checked packages are in corresponding branches.

In some embodiments, referring to fig. 3 and 4, the BHS tracks the baggage 201 to an XIS entrance where the BHS passes the ID information of the baggage 201 to the XIS at the entrance barrier of the XIS. After the baggage 201 is transferred to the XIS, the XIS starts tracking the baggage 201, and after generating a scanned image of the baggage 201, the XIS binds the ID of the baggage 201 and the scanned image and transfers the bound ID to the map judging system. When the baggage 201 leaves the XIS, the XIS transmits the ID of the baggage 201 back to the BHS, which continues to track the baggage 201 to the sorting gate and proceeds with corresponding open check or pass-through processing.

Based on the description of fig. 3 and 4, a sorter and curtain deployment description provided in accordance with embodiments of the present disclosure is further described below in conjunction with fig. 5-12.

Fig. 5 schematically illustrates a perspective view of a sorter according to an embodiment of the present disclosure. Fig. 6 schematically illustrates a top view of the sorter of fig. 5 viewed in the z-direction, according to an embodiment of the present disclosure. Fig. 7 schematically illustrates a schematic of line contact versus surface contact in accordance with an embodiment of the present disclosure. Fig. 8 schematically illustrates a schematic view of loading and unloading of a sorting unit according to an embodiment of the present disclosure. Fig. 9 schematically illustrates a top view of a sizer according to an embodiment of the disclosure. The dimensions in fig. 9 are in millimeters.

In some embodiments, as in fig. 5 and 6, sorter 113 includes a rack 1131 and M sorting units 1132. The rack 1131 includes N rows of pockets toward the objects to be sorted, each row including at least one pocket 11311; wherein each sorting unit 1132 is placed in a corresponding grid 11311, and N and M are integers greater than or equal to 2; wherein each sorting unit 1132 comprises at least two rollers 11321 and a belt 11322. The rollers 11321 are each configured to rotate during sorting; the belt 11322 is sleeved on at least two rollers 11321 to form a belt surface 113221, the belt surface 113221 is contacted with the objects to be sorted, and the belt 11322 is configured to drive the objects to be sorted to move through the movement of the belt surface 113221 in the sorting process.

Referring to fig. 5 and 6, the rack 1131 serves as a main body frame of the sorter 113, for supporting, mounting, shape defining, and the like. The pocket 11311 includes an opening in the top of the housing 1131 in the z-direction that provides a mounting location for the sorting unit 1132.

Illustratively, the N rows of bins may include a number of bins greater than or equal to M, e.g., the sorting units 1132 are in a one-to-one relationship with the bins 11311, which can reduce the cost of arranging the sorting units 1132 and increase the pass rate of the objects to be sorted by a modular design. As another example, the number of bins 11311 may be greater than the number of sorting units 1132, which can provide enough bins for the sorting units 1132 to install, further reducing the cost of arranging the sorting units 1132, and avoiding congestion of objects to be sorted on the sorting machine 113.

Illustratively, the strap 11322 may be a narrow strap, e.g., a strap having a width less than a certain value, such as a width less than 100 millimeters (by way of example only). The roller 11321 may include a wheel shape or a cylindrical shape, etc. The strap may be sleeved on at least two rollers 11321, the rollers 11321 being arranged in sequence along the direction of movement of the strap 11322, e.g., with the rollers 11321 disposed on each side of the strap 11322, so as to spread the strap 11322 apart to form a planar-like strap face 113221. The direction of movement of the ribbons 11322 may be the same as the rollers 11321, for example, with each roller 11321 rotating in synchronization during sorting, while the ribbons 11322 move as the rollers 11321 rotate.

In some embodiments, for either sorting unit 1132, a first roller and a second roller (not shown) are positioned on either side of the narrow strip in the y-direction as shown in fig. 6, the narrow strip being sleeved on the first roller and the second roller. A third roller may also be provided between the first roller and the second roller to support the narrow band face 113221. For example, the width of the first roller and the second roller is smaller than the width of the narrow band, a plurality of chain wheels are respectively arranged on two sides of the length direction of the narrow band, racks are arranged on the inner sides of the narrow band, and the narrow band is driven to rotate through the cooperation of the racks and the chain wheels. The first roller and the second roller are arranged between the two chain wheels.

In other embodiments, the sorting unit 1132 includes a driving roller for driving the belt, and the driving roller includes a first roller and a second roller fixed on the frame 1131, the first roller and the second roller being disposed at two ends of the belt along the y direction, and the first roller and the second roller being disposed between the first roller and the second roller, for supporting and sorting the objects to be sorted. In this embodiment, the belt is sleeved on the first roller, the second roller, the first roller and the second roller. For example, the first roller and the second roller are arranged as friction drums, and the narrow belt is a friction belt. Further, the friction cylinder and the friction belt are made of rubber, friction stripes are formed on the surface of the friction wheel, and the friction stripes are formed on the surface of the friction belt. In this way, the friction force between the friction wheel and the friction belt is further increased.

As shown in fig. 7, the left side is a schematic line contact diagram of the balance 11 with the object to be sorted, and the right side is a schematic surface contact diagram of the belt surface 113221 with the object to be sorted. It will be appreciated that even if the bottom surface of the object to be sorted is not a regular plane as shown in fig. 7, the contact area can be increased by the surface contact, thereby improving the sorting ability. The sorting machine 113, for example, as set forth above, operates on the principle that: the sorter 113 is activated and each roller 11321 rotates and the belts 11322 move to move the belt face 113221 to sort the objects carried on the belt face 113221 to the target sorting branch.

In some embodiments, each sorting unit 1132 is independently removably positioned within a corresponding pocket 11311.

Referring to fig. 8, the sorting machine 113 adopts a modular design, and each sorting unit 1132 can be independently disassembled, so that maintenance is facilitated, when the sorting unit 1132 is replaced, only the old sorting unit 1132 is required to be pulled out, the new sorting unit 1132 is required to be pushed in, and each time the replacement efficiency is high. By providing the plurality of independent detachable sorting units 1132 on the frame 1131, the sorting units 1132 can be detached in a targeted and independent manner when being maintained, and the whole sorting module formed by the plurality of sorting units 1132 is not detached, so that the whole maintenance time is short.

In some embodiments, each sorting unit 1132 further includes a first drive unit and a second drive unit. The first driving unit is configured to drive at least two rollers 11321 to rotate; and a second driving unit configured to drive the belt 11322 to rotate so as to move the belt face 113221.

For example, at least one of the first drive unit and the second drive unit may be a servo driver. The servo driver is also called a servo controller or a servo amplifier, is a controller for controlling a servo motor, acts like a frequency converter on a common alternating current motor, is a part of a servo system, can improve the driving efficiency and accuracy of the strip 11322 and the roller 11321, and has quick sorting action response.

In some embodiments, the first driving unit may include driving assemblies in one-to-one correspondence with each of the rollers 11321, and each driving assembly may include a driving shaft and a motor, and the motor, the driving shaft and the rollers 11321 are sequentially connected to drive the rollers 11321 to rotate by rotation of the motor. Accordingly, the synchronous rotation of the plurality of rollers 11321 is driven by providing a plurality of driving motors. The second drive unit may comprise a motor and a transmission member, which may be a gear wheel when driven using a sprocket as described above. Wherein, the motor drives the gear, and the gear drives the sprocket that meshes with it and rotates. In the driving using the driving roller as described above, the transmission member may be a driving shaft, and the motor, the driving shaft and the driving roller are connected one by one and sequentially, and the driving roller is rotated by the rotation of the motor.

According to the embodiment of the present disclosure, by providing the roller 11321 and the belt 11322 with the corresponding first driving unit and second driving unit, respectively, it is possible to have higher flexibility and a greater driving force in a separate driving manner.

In other embodiments, the rollers 11321 and the belt 11322 may share a third drive unit, such as by providing a single motor in combination with a pulley mechanism to drive the multiple rollers 11321 in unison, thereby reducing the cost of arranging the multiple drive units and reducing the complexity of the mechanism.

In some embodiments, each sorting unit 1132 further includes a carrier unit 11323 configured to be rotatably mounted within a corresponding pocket 11311, with at least two rollers 11321 and a strap 11322 mounted to the carrier unit 11323; wherein the carrying unit 11323 is configured to change the sorting direction of the objects to be sorted by rotating a certain angle.

Illustratively, the carrier unit 11323 includes a wheel mount and a carrier on which at least two wheels 11321 and a belt 11322 are mounted. The rotating wheel seat is rotatably connected with the bearing table, for example, the bottom of the bearing table is spherical, the upper part of the rotating wheel seat comprises a containing part for containing the spherical part, and the spherical part is embedded in the containing part and can rotate in the containing part. The bottom of the wheel seat is clamped with the frame 1131 or detachably connected through a fastener.

Further, the sorting machine 113 further includes a pushing arm assembly (not shown in the figure) disposed on the frame 1131 and in one-to-one correspondence with the grid 11311, and the pushing arm assembly includes a pushing arm body, a link, and a fourth driving unit. When the carrier unit 11323 is installed into the pocket 11311, the position of the carrier table is restricted by the push arm assembly so as to be maintained in a fixed orientation. When the sorting direction of the objects to be sorted needs to be changed, the fourth driving unit drives the connecting rod connected with the fourth driving unit to move, and the connecting rod drives the pushing arm body to move, so that the pushing arm body pushes the bearing table to rotate to the target sorting direction.

According to the embodiment of the disclosure, compared with fig. 6 and fig. 9, the narrow-band directions shown in the two are inconsistent, so that at least a portion (such as a bearing table) of the bearing unit 11323 can be rotated by a certain angle to change the sorting direction of the objects to be sorted, each object to be sorted can be accurately processed in the sorting process, and the sorting efficiency is improved.

In some embodiments, each row of cells 11311 is aligned along a first direction, with the midlines of adjacent cells 11311 in the same row coinciding along the first direction; for any two adjacent rows of the lattice openings 11311, the lattice openings 11311 in the two rows are arranged in a staggered manner, wherein the staggered arrangement comprises that the central lines of any two lattice openings 11311 between the two rows along the second direction are not coincident, and the second direction is perpendicular to the first direction.

Referring to fig. 9, a plurality of cells 11311 form a row along the x-direction, and the centerline of each cell 11311 in the row is parallel to the x-direction, and overlap means that the centerlines of the plurality of cells 11311 in the row along the x-direction are on a straight line. In the y-direction, the cells 11311 of adjacent rows are offset. For irregular objects to be sorted, contact points with the objects to be sorted can be increased through the staggered arrangement, so that contact angles are improved, each sorting unit 1132 is fully contacted with the objects to be sorted, and the purposes of reducing cost and improving sorting passing rate are achieved.

In some embodiments, for any two adjacent rows of cells 11311, one row has K1 cells 11311 and the other row has K2 cells 11311, K1 and K2 are not equal, and K1 and K2 are integers greater than or equal to 1. The arrangement of any two adjacent rows of the pockets 11311 with different numbers of pockets 11311 is beneficial to forming the above-mentioned staggered arrangement, and the number of pockets 11311 and sorting units 1132 can be reduced.

In some embodiments, K1 is an integer greater than or equal to 2, K2 is equal to the value of K1 plus 1, for a row of ports 11311 having K1 ports 11311, where each port 11311 is located between two ports 11311 in the other row, the center line of the three ports 11311 is a triangle 901.

Referring to fig. 9, one row of the adjacent two rows of the grid openings 11311 is 6, and the other row is 5, so that the number of the sorting units 1132 is effectively reduced. In addition, for each row with 5 grid openings 11311, each grid opening 11311 is located between two grid openings 11311 in the other row, and due to the staggered arrangement, more rows can be added in the v direction, so that the contact area of objects to be sorted is increased.

In some embodiments, each of the pockets 11311 is generally circular, the strap face 113221 within each of the pockets 11311 is generally rectangular, the width of the strap face 113221 is less than the diameter of the pocket 11311, and/or the length of the strap face 113221 is less than the diameter of the pocket 11311. Referring to fig. 9, the narrow band has a rectangular shape in the circular aperture 11311, and the area of the band 113221 is smaller than the area of the aperture 11311. The rectangle as shown in fig. 9 has a width of about 98 mm, a length of about 115 mm, and a circular diameter of about 159 mm.

According to the embodiments of the present disclosure, by making the width and/or length of the rectangle smaller than the diameter of the circle, it is possible to save the cost of the narrow band and maintain a sufficient contact area with the object to be sorted.

In some embodiments, in a third direction perpendicular to the strap face 113221, the orthographic projection of the contour of the strap face 113221 intersects the orthographic projection of the contour of the located pocket 11311.

As shown in fig. 9, the direction of the orthographic projection may be the z direction, that is, the orthographic projection of the contour of the strap face 113221 is rectangular, and the orthographic projection of the contour of the grid 11311 may be circular, and the rectangle intersects the circle. This allows the tape surface 113221 to adequately fill the pockets 11311, increasing the contact area with the objects to be sorted.

With continued reference to fig. 9, in the x-direction, there are a row of K2 cells 11311 with a centerline distance between any two adjacent cells 11311 of about 170 millimeters, and a centerline distance between the left-most cell 11311 and the right-most cell 11311 of about 850 millimeters. The ratio between 850 mm and 1122 mm of the overall width of the housing 1131 is approximately 76%. In the y-direction, the centerline distance between the adjacent rows of cells 11311 is about 160 millimeters, the centerline distance between the uppermost and lowermost cells 11311 is about 960 millimeters, and the ratio between the 960 millimeters and the overall length 1150 millimeters of the housing 1131 is about 83.5%.

It will be appreciated that the specific dimensional values shown in fig. 9 are merely illustrative, and can be adaptively adjusted according to the above proportional relationship, and the economy of the apparatus and the package passing performance are both considered by optimizing the narrow band size, the number of narrow bands and the narrow band layout.

FIG. 10a schematically shows a block diagram of a door curtain of a security check machine in the related art; fig. 10B schematically shows a schematic cross-sectional view along line B-B in fig. 10 a. Fig. 11 schematically illustrates a schematic view of a single layer door curtain according to an embodiment of the present disclosure. Fig. 12 schematically illustrates a schematic view of a single layer door curtain installed in an inspection channel 121 according to an embodiment of the present disclosure. Fig. 12 is a top view.

In the related art, blocking of a package by a security inspection machine curtain is one of the main factors causing package tracking failure. Existing security inspection machines typically provide multiple layers of screening curtains at the entrance and exit of the tunnel due to the X-ray radiation during operation. In order to meet the radiation shielding requirement, heavy metal lead is usually contained in the door curtain, so that the door curtain has relatively heavy weight. Thus, when scanning items of luggage 201 that are lighter in weight, problems may arise that are blocked by the door curtain and cannot enter the security device. As shown in fig. 10a and 10b, the conventional security inspection machine door curtain adopts a single-channel, double-layer door curtain design, and the width of a single door curtain is about 100 mm. For example, for light weight packages, blocking and connecting of packages can occur frequently at the curtain.

In some embodiments, referring to fig. 11 and 12, the radiation scanning apparatus 120 includes a first shielding curtain 122 and a second shielding curtain 123. The first shielding door curtain 122 comprises at least two door curtains, a first distance is arranged between two adjacent door curtains, and the first shielding door curtain 122 is arranged near the inlet side of the first conveying mechanism 111; the second shielding door curtain 123 includes at least two door curtains, a second distance is formed between two adjacent door curtains, and the second shielding door curtain 123 is disposed near the outlet side of the third transportation mechanism 112; wherein each door curtain is a single-layer door curtain, and the first distance is the same as or different from the second distance.

In some embodiments, referring to fig. 11 and 12, an inspection channel 121 is defined between the inlet side and the outlet side, and the single-layer door curtain includes S door curtains, where S is an integer greater than or equal to 2, disposed in parallel between any two adjacent door curtains; wherein the ratio of the width of each door curtain to the width of the inspection channel 121 is about 1:30, and/or each door curtain has a width greater than 0 mm and less than 100 mm.

With continued reference to fig. 11 and 12, a two-pass, single-layer light lead door curtain design is employed to enhance the throughput of the door curtain for use defects of conventional security check machine door curtains on airport terminals. The material is as follows: the weight per unit area of the light weight lead door curtain is about two thirds of that of the common lead door curtain shown in fig. 10a and 10b, and the equivalent thickness of the lead door curtain (0.35 mm/160 KV) is the same; structural design: the light curtain adopts a double-channel single-layer design, as shown in fig. 12, a distance of about 500 mm is formed between the two curtains, and compared with the common curtain single-channel double-layer design, the resistance to passing through the package is greatly reduced. In addition, the single sheet of the lightweight curtain has a width of about 30 mm and the length of the inspection channel 121 is about 1000 mm, in a ratio of about 1:30. the resistance to passing through the wrap is also reduced relative to the 100 mm of a conventional door curtain.

According to the embodiment of the present disclosure, at least two curtains are used to form the first shielding curtain 122 or the second shielding curtain 123, which shields the radiation of the X-rays inside the security device, does not affect the radiation protection effect of the curtains, and makes the object 200 pass through relatively easily. The object 200 is less resistant to passing through the curtain, facilitating quick passage through the curtain.

1-12, the integrated object inspection system 100 is suitable for ase:Sub>A system integration solution of CX100100DB-A type X-ray inspection system, an ATR automatic code scanning system, ase:Sub>A BHS and ase:Sub>A remote image judging system in airport goods station security inspection application scenes. Mainly relates to the following aspects: front section of security inspection machine: a conveyor belt for automatically pulling bags and a luggage 201 information acquisition system are additionally arranged; rectifying and modifying security inspection machine: the ability of the luggage 201 to pass through is enhanced by lightweight lead curtain reconstruction. Developing interconnection software and matching a line body to finish the luggage 201 tracking; the rear section of the security inspection machine: a conveyor belt, an automatic sorter 113, a return mechanism, and a release mechanism are designed. The PLC program is developed to finish the tracking and sorting of the baggage 201, and the influence of the rewinding jigsaw of the security check machine on the baggage 201 tracking is mainly solved. The sorter 113 was developed, focusing on solving the problem of insufficient sorting capability of the ordinary balance sorter for the irregular baggage 201. Remote graph judging system: the remote image judging system can meet the functions of image dispatch and remote image judging, and can integrate line body and security check machine information in the system, so that security check personnel can conveniently monitor the whole airport goods station integrated object checking system 100;

In some embodiments, the object inspection system 100 operates as follows in airport terminal security checks:

verification of human evidence: before the single ticket baggage 201 is checked, the freight agent must check the personnel before starting the shipment, after the check is successful, the belt of the security check machine starts to rotate forward, the belt of the automatic code scanning machine at the entrance of the security check machine and the belt at the exit of the security check machine are linked to rotate forward, and the freight agent prepares to start loading each piece of tagged baggage 201.

Ingress BHS pull packet processing: the entrance BHS receives the baggage 201, performs a bag pulling process on the baggage 201, and ensures that the bag pitch is not less than 500mm (by way of example only).

Automatic code scanning: after entering the ATR code scanning area, the ATR scans the code, and after successful code scanning, the ATR sends the luggage 201 bar code to the entrance BHS at the fixed point location (at the XIS entrance).

Baggage security inspection: the portal BHS starts tracking the baggage 201 at the fixed point location and sends the baggage 201 barcode + tracking BID code (BHS self-generated) to the XIS at a location intermediate the beam plane of the XIS. The XIS packages and transmits the luggage 201 image, the corresponding bar code and the BID code to a remote picture judging system.

Safety inspection judgment chart: the exit BHS continues to transfer and track the baggage 201 during which the remote interpretation station interprets the received image information. After the diagramming staff makes the diagramming conclusion on the baggage 201, the remote diagramming system sends the diagramming conclusion + tracking BID code to the XIS, and after the XIS receives, it sends it to the output port BHS.

Baggage 201 sorting: when the baggage 201 is transferred to the front end position of the sorting machine 113, the export BHS extracts the conclusion from the data queue according to the received conclusion + tracking BID code, and sorts or releases the corresponding baggage 201 according to the conclusion of the judgment chart.

Unpacking and checking: the unpacker and the freight agent need to sequentially carry out unpacking inspection, re-declaring the name and other operations on the returned suspicious baggage 201; during transportation and unpacking of suspicious baggage 201, other baggage 201 may continue to be secured by a security machine.

Rechecking the luggage: after the unpacking inspection is completed, the contraband-free baggage 201 needs to be reexamined. The re-checking flow is consistent with the initial checking, if the re-checking meets the suspicious baggage 201, the suspicious baggage 201 needs to be returned again for unpacking checking until the security checking flow of the whole baggage 201 is finished after each piece of baggage 201 is processed.

The embodiment of the disclosure reduces the blocking of the security inspection machine door curtain to the packages, improves the passing rate of the security inspection machine door curtain, and improves the sorting capacity of the sorting machine in addition, so that the adaptability of the security inspection machine to different packages is enhanced. Due to improvement of the door curtain of the security inspection machine and the sorting machine, the tracking success rate and the sorting success rate of the system reach higher standards.

Those skilled in the art will appreciate that the features recited in the various embodiments of the disclosure and/or in the claims may be provided in a variety of combinations and/or combinations, even if such combinations or combinations are not explicitly recited in the disclosure. In particular, the features recited in the various embodiments of the present disclosure and/or the claims may be variously combined and/or combined without departing from the spirit and teachings of the present disclosure. All such combinations and/or combinations fall within the scope of the present disclosure.

The embodiments of the present disclosure are described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the embodiments cannot be used advantageously in combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be made by those skilled in the art without departing from the scope of the disclosure, and such alternatives and modifications are intended to fall within the scope of the disclosure.

Claims (12)

1. A sorter, comprising:

a frame comprising N rows of pockets facing the objects to be sorted, each row comprising at least one of said pockets;

M sorting units, wherein each sorting unit is arranged in a corresponding grid, and N and M are integers greater than or equal to 2;

wherein each of the sorting units comprises:

at least two rollers, each configured to rotate during sorting;

the belt-shaped piece is sleeved on at least two rollers to form a belt surface, the belt surface is in contact with the objects to be sorted, and the belt-shaped piece is configured to drive the objects to be sorted to move through movement of the belt surface in the sorting process.

2. The sorter of claim 1, wherein each of the sorting units is independently removably positioned within a corresponding bin.

3. The sorter of claim 1 wherein,

each row of grid openings is arranged along a first direction, and two adjacent grid openings in the same row are overlapped along the central line of the first direction;

for any two adjacent rows of the lattice openings, the lattice openings in the two rows are arranged in a staggered mode, the staggered arrangement comprises that the central lines of any two lattice openings between the two rows are not coincident along the second direction, and the second direction is perpendicular to the first direction.

4. The sorter of claim 3 wherein,

for any two adjacent rows of the grid openings, one row is provided with K1 grid openings, the other row is provided with K2 grid openings, K1 and K2 are unequal, and K1 and K2 are integers greater than or equal to 1.

5. The sorter of claim 4 wherein K1 is an integer greater than or equal to 2, K2 is equal to the value of K1 plus 1,

for a row of K1 cells, each cell is located between two cells in the other row, and the central line of the three cells is triangular.

6. The sorter of claim 1 wherein each of the pockets is generally circular, the belt face within each of the pockets is generally rectangular,

the width of the strip face is smaller than the diameter of the grid mouth, and/or the length of the strip face is smaller than the diameter of the grid mouth.

7. The sorter of claim 6, wherein in a third direction perpendicular to the belt face, the orthographic projection of the contour of the belt face intersects the orthographic projection of the contour of the gate.

8. The sorter of claim 1, wherein each of the sorting units further comprises:

a first driving unit configured to drive at least two of the rollers to rotate; and

and a second driving unit configured to drive the belt to rotate so as to move the belt surface.

9. The sorter of claim 8, wherein each of the sorting units further comprises:

a carrying unit configured to be rotatably mounted in a corresponding pocket, at least two of the rollers and the belt being mounted to the carrying unit;

Wherein the carrying unit is configured to change a sorting direction of the objects to be sorted by rotating by a certain angle.

10. An object inspection system comprising:

a transport device comprising a first transport mechanism and a third transport mechanism for transporting objects to be sorted;

a radiation scanning device comprising a second transport mechanism configured to transport an object to be sorted from the first transport mechanism to a radiation scanning area and to transport the object to be sorted to the third transport mechanism;

the sorter of any of claims 1-9 in connection with the third conveyor, the sorter configured to sort objects to be sorted from the third conveyor to a target sorting branch.

11. The object inspection system of claim 10, wherein the radiation scanning device comprises:

the first shielding door curtain comprises at least two door curtains, a first distance is reserved between every two adjacent door curtains, and the first shielding door curtain is arranged at the inlet side close to the first conveying mechanism;

the second shielding door curtain comprises at least two door curtains, a second distance is reserved between every two adjacent door curtains, and the second shielding door curtain is arranged at the outlet side close to the third conveying mechanism;

Wherein each door curtain is a single-layer door curtain, and the first distance is the same as or different from the second distance.

12. The object inspection system of claim 11, wherein the entrance side and the exit side define an inspection channel therebetween, the single layer curtain comprising:

s sheets of door curtains are arranged in parallel between any two adjacent door curtains, and S is an integer greater than or equal to 2;

wherein the ratio of the width of each door curtain to the width of the inspection channel is about 1:30, and/or each door curtain has a width greater than 0 mm and less than 100 mm.