A tray-type static CT tomography security inspection machine

Abstract

The invention discloses a tray-type static CT tomography security inspection machine, which belongs to the technical field of security inspection equipment. The invention comprises a frame, a radiation shielding cover is arranged on the frame, a movable roller transmission device is arranged in the radiation shielding cover, the movable roller transmission device comprises a movable roller bracket and a driving device, the driving device comprises a driving sprocket and a driven sprocket, chains are sleeved on the driving sprocket and the driven sprocket, the driving sprocket and the driven sprocket are sleeved on a driving shaft, the driving shaft is arranged in a driving bearing seat, the driving shaft is connected to the output shaft of a chain drive motor, the chain drive motor is connected to a controller, the driven sprocket is sleeved on the driven shaft, the driven shaft is arranged in the driven bearing seat, a rotating tray is arranged at the bottom of the movable roller transmission device, an X-ray source is arranged at the bottom of the radiation shielding cover, the X-ray source is connected to the controller, an X-ray detector is arranged on the inner side wall of the top plate, the X-ray detector is connected to the controller, and the controller is connected to a display device.

Description

Technical Field

[0001] The invention relates to the technical field of security inspection equipment, and in particular to a tray-type static CT tomography security inspection machine. Background Art

[0002] In the current security market, X-ray security inspection machines are essential machines that can be used for security inspections without opening packages, improving the work efficiency of security inspectors and are widely used.

[0003] Domestic X-ray security inspection technology has been introduced from the United States since the 1970s and has developed to date, from the original analog two-dimensional plane scanning circuit to today's pure digital two-dimensional plane scanning circuit. Although the stability and reliability of X-ray security inspection machines have been improved, the image quality has not been improved.

[0004] Two-dimensional plane scanning uses an L-shaped detection frame for imaging. After the X-ray passes through the package, the energy is attenuated. The L-shaped detection frame scintillator and PD convert the optical signal into an electrical signal. After computer image processing, an X-ray image of the package is generated. After the security inspector judges the image, he confirms whether there are hazardous chemicals, contraband and other items in the package. Due to the inherent defects of two-dimensional plane scanning, high-density objects stacked together in the package cannot be penetrated and imaged, forming a blind spot for the security inspector, posing a safety risk to the security guard.

[0005] At present, X-ray security inspection machine manufacturers around the world are developing CT scanning security inspection machines. This type of security inspection machine uses a high-speed rotating detection frame to collect package tomographic data on the conveyor to generate three-dimensional X-ray images, which improves the efficiency and accuracy of image recognition for security inspectors. Spiral CT scanning has complex structure, many wearing parts, high maintenance costs, and short product life, and is not suitable for high-frequency use in the security inspection industry. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a tray-type static CT tomography security inspection machine, which can collect package tomography data in a 360-degree vertical manner, generate X-ray 3D three-dimensional multi-view images after computer image processing, and facilitate security inspectors to efficiently and accurately identify prohibited items and dangerous goods. It has the advantages of simple structure, few wearing parts, low failure rate, high working reliability and long service life, and is suitable for use in harsh environments in the security inspection industry.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] A tray-type static CT tomography security inspection machine, comprising a frame, a radiation shielding cover is arranged on the frame, the radiation shielding cover comprises a top plate and a plurality of side plates, the number of the plurality of side plates is an even number, any one of the plurality of side plates is provided with a security inspection cargo entrance, the security inspection cargo entrance is provided with an entrance fixed roller transmission device, the other side plate which is symmetrical with any side plate provided with the security inspection cargo entrance about the center of the radiation shielding cover is provided with a security inspection cargo exit, the security inspection cargo exit is provided with an exit fixed roller transmission device, the radiation shielding cover is provided with a movable roller transmission device The transmission device comprises a movable roller bracket and a driving device, wherein the movable roller bracket is provided with a plurality of movable rollers, the bottom of the movable roller bracket is provided with four walking wheels, the bottom of the radiation shield is provided with two guide rails for limiting the four walking wheels, the driving device comprises a driving sprocket and a driven sprocket, the driving sprocket and the driven sprocket are sleeved with chains, the driving sprocket and the sleeve are arranged on a driving shaft, the driving shaft is arranged in a driving bearing seat, the driving shaft is connected to the output shaft of the chain drive motor, and the chain drive motor is connected to the controller The driven sprocket is sleeved on the driven shaft, and the driven shaft is arranged in the driven bearing seat. A rotating tray is provided at the bottom of the moving roller transmission device, and the rotating tray includes a tray bottom plate and a rotatable tray top plate. The tray bottom plate is connected to the tray top through a telescopic rod, and the telescopic rod includes a telescopic upper rod and a telescopic lower rod. The tray top plate is connected to the bottom plate of the moving roller transmission device, and a mounting boss is provided at the bottom of the tray top plate, and a mounting blind hole is provided at the center of the mounting boss. A tray bearing is provided at the top of the telescopic rod, and the outer ring of the tray bearing is sleeved An external gear is arranged on the outer wall of the mounting boss in the mounting blind hole, the external gear is meshed with the driving gear, the driving gear is sleeved on the tray shaft, the tray shaft is arranged on the tray bearing seat, the tray bearing seat is connected to the telescopic upper rod, the tray shaft is connected to the output shaft of the tray motor, the tray motor is connected to the controller, an X-ray source is arranged at the bottom of the radiation shielding cover, the X-ray source is connected to the controller, an X-ray detector is arranged on the inner wall of the top plate, the X-ray detector is connected to the controller, and the controller is connected to the display device.

[0009] Preferably, the top plate is welded to a plurality of side plates.

[0010] Preferably, the inlet fixed roller transmission device comprises an inlet fixed roller transmission bracket, and the inlet fixed roller transmission bracket is provided with a plurality of inlet stainless steel rollers.

[0011] Preferably, the outlet fixed roller transmission device comprises an outlet fixed roller transmission bracket, and the outlet fixed roller transmission bracket is provided with a plurality of outlet stainless steel rollers.

[0012] Preferably, a security inspection cargo entrance passage is provided at the security inspection cargo entrance, the security inspection cargo entrance passage is connected to the side panel provided with the security inspection cargo entrance, and a plurality of radiation blocking strips are provided on the security inspection cargo entrance passage.

[0013] Preferably, a security inspection cargo exit passage is provided at the security inspection cargo exit, the security inspection cargo exit passage is connected to a side panel provided with the security inspection cargo exit, and a plurality of radiation blocking strips are provided on the security inspection cargo exit passage.

[0014] By adopting the above technical solution, since a movable roller transmission device is provided, the goods can be transported from the entrance fixed roller transmission device to the exit fixed roller transmission device. Since a rotating pallet is provided, the security inspection machine can collect package tomographic data vertically at 360 degrees, and generate X-ray 3D three-dimensional multi-view images after computer image processing, which is convenient for security inspectors to identify prohibited items and dangerous goods efficiently and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a tray-type static CT tomography security inspection machine of the present invention;

[0016] Figure 2 This is a schematic diagram of the top view of the structure of a tray-type static CT tomography security inspection machine of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the driving device of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the rotating tray of the present invention. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] like Figure 1-2 As shown, Figure 1 This is a schematic diagram of the main structure of a tray-type static CT tomography security inspection machine of the present invention. Figure 2The present invention is a schematic diagram of a top view of the structure of a tray-type static CT tomography security inspection machine, comprising a frame 1, the frame 1 is used to support the entire scanning security inspection machine, a plurality of frame 1 brackets are arranged at the bottom of the frame 1, a radiation shielding cover is arranged on the frame 1, the radiation shielding cover is used to shield the X-rays emitted by the X-ray source 28 to prevent the X-rays from causing radiation damage to the human body, the radiation shielding cover comprises a top plate 2 and a plurality of side plates 3, a relatively closed space is formed by the top plate 2 and the plurality of side plates 3, radiation is effectively shielded, the number of the plurality of side plates 3 is an even number, the side plates 3 are a total of eight, the eight side plates 3 constitute a structure of a regular octagon in a top view, processing and manufacturing are convenient, any one of the plurality of side plates 3 is provided with a security inspection cargo entrance, the security inspection cargo entrance is used for the security inspection cargo to enter the security inspection machine, an entrance fixed roller transmission device 4 is arranged at the security inspection cargo entrance, the entrance fixed roller transmission device 4 is used to transport the security inspection cargo to the radiation shielding cover for security inspection, and the security inspection cargo can be directly placed on the entrance fixed roller The goods are transported on the transmission device 4, or they can be placed on the storage rack, and then the storage rack is placed on the entrance fixed roller transmission device 4 for transportation. A security inspection goods outlet is provided on the other side plate 3 which is symmetrical with any side plate 3 provided with the security inspection goods entrance about the center of the radiation shielding cover. There are eight side plates 3 in total, and the eight side plates 3 form a structure with a regular octagonal shape in a top view. An exit fixed roller transmission device 5 is provided at the security inspection goods outlet, and the exit fixed roller transmission device 5 is used to transport the security inspection goods out of the radiation shielding cover. The security inspection goods can be directly transported on the exit fixed roller transmission device 5, or they can be transported on the exit fixed roller transmission device 5 through the storage rack. A movable roller transmission device 6 is provided in the radiation shielding cover, and the movable roller transmission device 6 is used to transport the security inspection goods from the entrance fixed roller transmission device 4 to the center of the radiation shielding cover for security inspection, and then the security inspection goods are transported to the exit fixed roller transmission device 5, and the security inspection goods are sent out of the security inspection machine through the exit fixed roller transmission device 5;

[0021] like Figure 3 As shown, Figure 3Schematic diagram of the structure of the driving device of the present invention, the moving roller transmission device 6 includes a moving roller bracket 30 and a driving device, the moving roller bracket 30 is used to support the security inspection of the goods, the driving device is used to drive the moving roller transmission device 6 to move back and forth, the moving roller bracket 30 is provided with a plurality of moving rollers 7, the moving roller 7 is rotated to transport the security inspection of the goods, the bottom of the moving roller bracket 30 is provided with four walking wheels 8, the four walking wheels 8 are used to support the moving roller transmission device 6 to walk, the bottom of the radiation shield is provided with two guide rails 9 for limiting the four walking wheels 8, the four walking wheels 8 can move back and forth on the guide rails 9, so that the moving roller transmission device 6 can transport the security inspection of the goods back and forth, the driving device adopts chain transmission, the driving device adopts chain transmission, and the driving device adopts chain transmission. The driving device includes a driving sprocket 10 and a driven sprocket 11, and a chain 12 is sleeved on the driving sprocket 10 and the driven sprocket 11. The driving sprocket 10 is sleeved on a driving shaft 13, and the driving shaft 13 is arranged in a driving bearing seat 14. The driving shaft 13 is connected to the output shaft of a chain drive motor 15, and the chain drive motor 15 is connected to a controller. The driven sprocket 11 is sleeved on a driven shaft 16, and the driven shaft 16 is arranged in a driven bearing seat 17. A positioning card is provided at the bottom of the driving roller transmission device 6, and the positioning card is inserted into the chain 12, so that the driving sprocket 10 rotates to drive the chain 12 to move, and the moving chain 12 drives the positioning card to move synchronously, thereby driving the driving roller transmission device 6 to move back and forth;

[0022] like Figure 4 As shown, Figure 4Schematic diagram of the structure of the rotating pallet of the present invention, a rotating pallet is provided at the bottom of the moving roller transmission device 6, the rotating pallet is used to realize the 360-degree rotation of the security inspection goods in the radiation shielding cover, the X-ray detector 29 collects the tomographic image data of the box-type package in real time in a vertical manner, the communication cable transmits the real-time collected image data to the computer operating table, and a 3D three-dimensional X-ray image of the box-type package is generated after computer image processing, the rotating pallet includes a pallet bottom plate 18 and a rotatable pallet top plate 19, the pallet bottom plate 18 is used to support and balance the rotating pallet, the pallet top plate 19 is used to support the moving roller transmission device 6, and then support the security inspection goods to rotate 360 ​​degrees, the pallet bottom plate 18 is connected to the top of the pallet by a telescopic rod, the telescopic rod is used to support the moving roller transmission device 6, so that the four walking wheels 8 can not contact the guide rail 9, thereby allowing the goods to rotate 360 ​​degrees, the telescopic rod is hydraulically driven to extend and retract, the structure is simple, and the operation is reliable, the telescopic rod includes a telescopic upper rod 20 and a telescopic lower rod 21, the pallet top plate 19 and The bottom plate of the movable roller transmission device 6 is connected, the bottom of the tray top plate 19 is provided with a mounting boss 22, the center of the mounting boss 22 is provided with a mounting blind hole, the top of the telescopic rod is provided with a tray bearing, the inner ring of the tray bearing is sleeved on the top of the telescopic upper rod 20, the outer ring of the tray bearing is sleeved in the mounting blind hole, the outer side wall of the mounting boss 22 is provided with an external gear 23, the external gear 23 is meshed with a driving gear 24, the driving gear 24 is sleeved on the tray shaft 25, the tray shaft 25 is arranged on the tray bearing seat 26, the tray bearing seat 26 is connected to the telescopic upper rod 20, the tray shaft 25 is connected to the output shaft of the tray motor 27, the tray motor 27 is connected to the controller, and the tray top plate 19 is driven to rotate by the operation of the tray motor 27, an X-ray source 28 is provided at the bottom of the radiation shielding cover, the X-ray source 28 is connected to the controller, an X-ray detector 29 is provided on the inner side wall of the top plate 2, the X-ray detector 29 is connected to the controller, the controller is connected to the display device, and the display device is used to display the X-ray image of the security inspection item;

[0023] The top plate 2 and the side plates 3 are welded to form a relatively closed space, which effectively prevents the leakage of X-rays from causing harm to the human body; the inlet fixed roller transmission device 4 includes an inlet fixed roller transmission bracket, on which a plurality of inlet stainless steel rollers are arranged, and one end of the plurality of inlet stainless steel rollers is provided with an inlet drive shaft, on which an inlet gear is sleeved, and the inlet gears are meshed with each other for transmission, and are meshed with the inlet driving gear for transmission;

[0024] The outlet fixed roller transmission device 5 comprises an outlet fixed roller transmission bracket, on which a plurality of outlet stainless steel rollers are arranged, one end of each of the plurality of outlet stainless steel rollers is provided with an outlet drive shaft, on which an outlet drive shaft is sleeved an outlet gear, and each outlet gear is meshed with each other for transmission, and is meshed with the outlet driving gear for transmission;

[0025] A security inspection cargo entrance passage is provided at the security inspection cargo entrance, and the security inspection cargo entrance passage is connected to the side panel 3 provided with the security inspection cargo entrance. A plurality of radiation blocking strips are provided on the security inspection cargo entrance passage, and the normal radiation blocking strips are in a drooping state, which effectively prevents X-rays from irradiating outside the radiation shielding cover;

[0026] A security inspection cargo exit channel is provided at the security inspection cargo exit, and the security inspection cargo exit channel is connected to the side panel 3 provided with the security inspection cargo exit. A plurality of radiation blocking strips are provided on the security inspection cargo exit channel. Normally, the radiation blocking strips are in a drooping state, which effectively prevents X-rays from irradiating outside the radiation shielding cover.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A tray-type static CT tomography security inspection machine, characterized in that: The invention comprises a frame, wherein a radiation shielding cover is provided on the frame, wherein the radiation shielding cover comprises a top plate and a plurality of side plates, wherein the number of the plurality of side plates is an even number, wherein any one of the plurality of side plates is provided with a security inspection cargo entrance, wherein an entrance fixed roller transmission device is provided at the entrance of the security inspection cargo, and another side plate which is symmetrical with any one of the side plates provided with the security inspection cargo entrance about the center of the radiation shielding cover is provided with a security inspection cargo exit, wherein an exit fixed roller transmission device is provided at the exit of the security inspection cargo, wherein a movable roller transmission device is provided in the radiation shielding cover, wherein the movable roller transmission device comprises a movable roller support and a driving device, wherein a plurality of movable rollers are provided on the movable roller support, wherein four travel wheels are provided at the bottom of the movable roller support, wherein two guide rails for limiting the four travel wheels are provided at the bottom of the radiation shielding cover, wherein the driving device comprises a driving sprocket and a driven sprocket, wherein the driving sprocket and the driven sprocket are sleeved with chains, wherein the driving sprocket is sleeved on a driving shaft, wherein the driving shaft is arranged in a driving bearing seat, wherein the driving shaft is connected to an output shaft of a chain drive motor, wherein the chain drive motor is connected to a controller, wherein the driven sprocket is sleeved with a On the driven shaft, the driven shaft is arranged in the driven bearing seat, a rotating tray is arranged at the bottom of the moving roller transmission device, the rotating tray includes a tray bottom plate and a rotatable tray top plate, the tray bottom plate is connected to the tray top through a telescopic rod, the telescopic rod includes a telescopic upper rod and a telescopic lower rod, the tray top plate is connected to the bottom plate of the moving roller transmission device, a mounting boss is arranged at the bottom of the tray top plate, a mounting blind hole is arranged at the center of the mounting boss, a tray bearing is arranged at the top of the telescopic rod, the outer ring of the tray bearing is sleeved in the mounting blind hole, an outer side wall of the mounting boss is provided with an external gear, the external gear is meshed with a driving gear, the driving gear is sleeved on the tray shaft, the tray shaft is arranged on the tray bearing seat, the tray bearing seat is connected to the telescopic upper rod, the tray shaft is connected to the output shaft of the tray motor, the tray motor is connected to the controller, an X-ray source is arranged at the bottom of the radiation shielding cover, the X-ray source is connected to the controller, an X-ray detector is arranged on the inner side wall of the top plate, the X-ray detector is connected to the controller, and the controller is connected to the display device.

2. The tray-type static CT tomography security inspection machine according to claim 1 is characterized in that: The top plate is welded to a plurality of side plates.

3. The tray-type static CT tomography security inspection machine according to claim 1, characterized in that: The inlet fixed roller transmission device comprises an inlet fixed roller transmission bracket, and a plurality of inlet stainless steel rollers are arranged on the inlet fixed roller transmission bracket.

4. The tray-type static CT tomography security inspection machine according to claim 3 is characterized in that: The outlet fixed roller transmission device comprises an outlet fixed roller transmission bracket, and the outlet fixed roller transmission bracket is provided with a plurality of outlet stainless steel rollers.

5. The tray-type static CT tomography security inspection machine according to claim 1, characterized in that: A security inspection cargo entrance passage is provided at the security inspection cargo entrance, the security inspection cargo entrance passage is connected to the side panel provided with the security inspection cargo entrance, and a plurality of radiation blocking strips are provided on the security inspection cargo entrance passage.

6. The tray-type static CT tomography security inspection machine according to claim 1, characterized in that: A security inspection cargo exit passage is provided at the security inspection cargo exit, the security inspection cargo exit passage is connected to the side panel provided with the security inspection cargo exit, and a plurality of radiation blocking strips are provided on the security inspection cargo exit passage.

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