CN2469444Y - Double-vehicle mobile container detection device with accelerator as radiation source - Google Patents

Abstract

The utility model discloses an use portable container detection device of two cars of accelerator as radiation source, it includes accelerator, scanning car and control car. The scanning vehicle is characterized in that a rotatable tray is arranged on a bracket of the scanning vehicle, and a portal frame formed by a vertical support frame, a horizontal cantilever provided with a detector and a vertical cantilever is arranged on the tray. When in detection, the control vehicle is far away from the detection site and controls the portal frame to parallelly cross the detected container. The detection result is displayed on the control vehicle, and the separate work of the person and the equipment with the X-ray is realized. Compared with the prior art, the utility model has the characteristics of reasonable in design, detection speed are fast, the formation of image figure is clear, do not harm the person.

Description

Double-vehicle mobile container detection device with accelerator as radiation source

The utility model relates to an automatic scanning type radiation detection device for large objects, in particular to a mobile container detection device. It belongs to the technical field of radiation detection. Suitable for customs inspection of large containers.

Mobile container inspection equipment is one of the inspection equipment urgently needed by the customs, and there is no such product in China at present. The existing mobile container detection device products in foreign countries all adopt the control device part and the scanning device part installed on a vehicle. That is to say, the operator and all testing equipment must work on the same vehicle. Because people work with the equipment with X-rays in the same car, if the ray energy of the radiation source is high, the shielding problem becomes very difficult, so X-ray machines can only be used as the radiation source. Due to the low ray energy and poor penetrability of the X-ray machine, it mainly relies on backscattered imaging. Therefore, the part of the image that can be seen clearly is limited to objects in the range of 20 to 30 centimeters from the wall of the container on one side. Image quality and scope of application are far from meeting the requirements of most customs users. It has the disadvantages of slow inspection speed, low resolution, and poor image forming quality. Some foreign products of the same kind use cobalt-60 as the radiation source. The radioactivity of the radiation source cannot be stopped artificially, but is determined by its own physical properties. Therefore, it has the possibility of leakage of radioactive elements, poor safety performance, and direct harm to the human body.

In order to overcome the shortcomings in the above-mentioned prior art, the purpose of this utility model is to provide a double-vehicle vehicle with accelerator as the radiation source, which has good safety, no harm to the human body, fast inspection speed, high resolution, and excellent image forming quality. Mobile container detection device.

In order to achieve the above-mentioned purpose of the invention, the technical solution of the utility model is realized in the following manner: a double-vehicle mobile container detection device with an accelerator as a radiation source, which includes an electronic linear accelerator and two carrying vehicles, one of which is a scanning vehicle and the other One car is the control car. It is characterized in that a rotatable tray is installed on the body bracket of the scanning vehicle. A vertical support frame composed of a four-bar linkage is hinged on the tray. The horizontal connecting rod on the vertical support frame is extended to be a horizontal cantilever equipped with a detector. The other end of the horizontal cantilever is provided with a hydraulic stretching oil cylinder, and the stretching oil cylinder connects the vertical cantilever equipped with the detector with the horizontal cantilever and makes the vertical cantilever perpendicular or parallel to the horizontal cantilever. The electron linear accelerator is also arranged on the above-mentioned tray, and its X-rays are always facing the vertical cantilever and the horizontal cantilever after the vertical. The scanning vehicle is also equipped with a wireless communication machine, a scanning control module and an image acquisition module. The control car is equipped with a wireless communication machine, a running checker and a power transmission cable that can be connected with the scanning car, and the power supply can be supplied by commercial power or generated by itself on the control car. When detecting the container, the pallet on the scanning vehicle rotates 90 degrees, and the gantry is formed by the vertical support frame, horizontal cantilever, and vertical cantilever. The wireless communication machine on the control vehicle sends out a control signal, and the wireless communication machine on the scanning vehicle receives the control signal. And through the scanning control module, the gantry formed on the scanning vehicle is driven by the scanning vehicle itself, and moves parallelly across the detected container. The X-rays emitted by the electron linear accelerator pass through the container under test, and after being received by the detectors in the horizontal cantilever and vertical cantilever, they are converted into electrical signals and input to the image acquisition module, and the image acquisition module sends the image signals to the control vehicle for operation inspection and display the measured results on a computer monitor.

According to the above technical solution, a hydraulic telescopic oil cylinder that can be propped up or placed obliquely is provided between the outer vertical link and the lower horizontal link of the vertical support frame composed of a four-bar linkage mechanism.

According to the above technical solution, the front end of the scanning vehicle is equipped with a guide wheel mechanism. The guide wheel mechanism includes a connecting plate, a supporting plate and a guiding wheel. The connecting plate can be connected with the bottom of the front end of the scanning car. The supporting plate is vertically fixed on the connecting plate. The bottom end of the lower strut of the link mechanism is fitted with guide wheels. The lifting of each guide wheel is controlled by the hydraulic cylinder fixed at one end on the scanning car. When each guide wheel lands, the front wheel of the scanning car can be lifted up, and the rear wheel of the scanning car drives each guide wheel to follow the preset track. walk.

The utility model has adopted two cars, and one is a scanning car, and the other is a control car. A radiation source with X-rays that is harmful to humans is placed on the scanning vehicle, while a person works in the control vehicle. Therefore, the problem of X-ray harm to the human body is fundamentally solved. Because the utility model adopts the electron linear accelerator as the radiation source, the X-ray energy produced by it is much larger than that of the X-ray machine, so its penetrating power to the container is greatly enhanced, the inspection speed and resolution are improved, and the inspection speed and resolution are improved. The formed image is very clear. Furthermore, an electron linear accelerator is used as a radiation source, which will not produce any radiation once the power is cut off. Compared with the prior art, the utility model has the characteristics of reasonable design, ingenious structure, easy installation, convenient use, fast detection speed, high quality of formed image and no harm to human body. It is the necessary equipment for customs inspection of large containers.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural installation schematic diagram of two vehicles of the utility model;

Fig. 2 is the rear view of the working state of the scanning car in Fig. 1;

Fig. 3 is a schematic structural view of the guide wheel mechanism of the present invention;

Fig. 4 is a flowchart of the working principle of the utility model;

Fig. 5 is a diagram of the utility model in use on site.

Referring to Fig. 1-Fig. 4, the two-vehicle mobile container detection device with accelerator as radiation source includes electron linear accelerator 7, scanning vehicle 1 and control vehicle 14. A rotatable pallet 6 is installed on the body bracket 5 of the scanning vehicle 1 . A vertical support frame 9 composed of a four-bar linkage is hinged on the tray 6, and the upper horizontal link of the vertical support frame 9 extends to form a horizontal cantilever 10 equipped with a detector. The other end of the horizontal cantilever 10 is provided with a hydraulic stretching oil cylinder 11 to stretch The vertical cantilever 12 equipped with the detector is connected with the horizontal cantilever 10 by the cylinder 11 and the vertical cantilever 12 can be vertical or parallel to the horizontal cantilever 10 . Between the outer vertical connecting rod of the vertical support frame 9 and the lower horizontal connecting rod, there is a hydraulic telescopic oil cylinder that can be propped up or placed obliquely. The electron linear accelerator 7 is also arranged on the tray 6, and its X-rays are always facing the vertical cantilever 12 and the horizontal cantilever 10 after the vertical. On the tray 6 , between the electron linear accelerator 7 and the vertical cantilever 12 is provided a collimator 8 which can shield X-rays. The front end of the scanning vehicle 1 is provided with a guide wheel mechanism 13 , and the guide wheel mechanism 13 includes a connecting plate 131 , a supporting plate 132 and a guide wheel 135 . The provided connecting plate 131 can be connected with the bottom of the front end of the scanning vehicle 1 , and the supporting plate 132 is vertically fixed on the connecting plate 131 . Two sets of parallel and consistent four-bar linkages 134 are articulated with the support plate 132 as the bottom link. The bottom end of the upper link of each four-bar linkage is fitted with a guide wheel 135, and one end is fixed to the hydraulic cylinder on the scanning car. 133 controls the lifting of each guide wheel 135. When the guide wheels 135 land on the ground, the original front wheels of the scanning vehicle 1 can be lifted up, and the rear wheels of the scanning vehicle 1 drive the guide wheels 135 to walk along preset tracks, as shown in FIG. 3 . The scanning vehicle 1 is further provided with a wireless communication device 4 , a scanning control module 3 and an image acquisition module 2 . The control car 14 is provided with a wireless communication machine 17, a running checker 16 and a transmission cable 15 that can be connected with the scanning car 1, and the power supply can be supplied by commercial power or generate electricity by itself on the control car 14. When detecting a container, the pallet 6 on the scanning vehicle 1 rotates 90 degrees, and a gantry is formed by a vertical support frame 9, a horizontal cantilever 10, and a vertical cantilever 12, and the gantry can pass through the container to be tested, as shown in FIG. 2 . When the wireless communication machine 17 on the control car 14 sends a control signal, the wireless communication machine 4 on the scanning car 1 receives the control signal and makes the gantry on the scanning car 1 driven by the scanning car 1 itself through the scanning control module 3, across the The measuring container moves in parallel. The X-ray emitted by the electron linear accelerator 7 passes through the container under test, and after being received by the detectors in the horizontal cantilever 10 and the vertical cantilever 12, it is converted into an electrical signal and input to the image acquisition module 2, and the image acquisition module 2 sends the image signal to the control The running checker 16 on the car 14 displays the measured results by the computer monitor, as shown in FIG. 4 .

Referring to Fig. 5, when using the utility model, after the detected container vehicle is driven to the scene, the scanning vehicle 1 is adjacent to the detected container, and its tray 6 is rotated 90 degrees to prop up the gantry, across the detected container in parallel, and The guide wheel mechanism 13 on the scanning vehicle 1 is put down to make each guide wheel 135 land. The drivers of each vehicle left the testing site. Begin long-distance control by the control car 14 outside the established rope fence. After the wireless communication machine 17 on the control vehicle 14 transmits a control signal, the scanning vehicle 1 can move in parallel along the gantry driven by the detected container. At this time, the detectors in the horizontal cantilever 10 and the vertical cantilever 12 receive the X-rays passing through the container under test and perform automatic scanning. Then the post-measurement result is transmitted to the operation checker 16 on the control car 14, and the loaded items in the container are displayed by the computer display. After the inspection is completed, the drivers of each car enter the inspection site, raise the guide wheel mechanism 13 on the scanning car 1, then make the vertical cantilever 12 parallel to the horizontal cantilever 10, and turn the tray 6 back to its original position, and place the vertical support frame 9 obliquely. . The inspected container truck drove out of the inspection site.

According to above-mentioned technical scheme, if guide wheel mechanism 13 and collimator 8 are not installed on scanning car 1; The carrier vehicle is set at a fixed site away from the testing site. Such technical solutions also belong to the protection scope of the present utility model.

Claims (4)

1. A double-vehicle mobile container detection device suitable for customs inspection and using an accelerator as a radiation source, it includes an electronic linear accelerator (7) and two carrying vehicles, one of which is a scanning vehicle (1), and the other The car is a control car (14), and the scanning car (1) is provided with a wireless communication machine (4), a scanning control module (3) and an image acquisition module (2), and the control car (14) is provided with a wireless communication machine (17 ), the operation checker (16) and the power transmission cable (15) that can be connected with the scanning car (1), the available power supply can be electricity from the mains or on the control car (14), and it is characterized in that: the scanning car ( 1) A rotatable tray (6) is installed on the bracket (5) of the vehicle body, and a vertical support frame (9) composed of a four-bar linkage mechanism is hinged on the tray (6), and the upper horizontal link of the vertical support frame (9) extends For the horizontal cantilever (10) that detector is housed, the other end of horizontal cantilever (10) is provided with hydraulic stretching oil cylinder (11), and stretching oil cylinder (11) is equipped with the vertical cantilever (12) of detector and horizontal cantilever ( 10) Connect and make the vertical cantilever (12) vertical or parallel to the horizontal cantilever (10), the electron linear accelerator (7) is also located on the above-mentioned pallet (6), and its X-rays are always facing the vertical back vertical Cantilever (12) and horizontal cantilever (10), when detecting the container, the pallet (6) on the scanning car (1) rotates 90 degrees, by the vertical support frame (9), horizontal cantilever (10), vertical cantilever (12) Form the gantry, start the control signal by the wireless communication machine (17) on the control car (14), and the wireless communication machine (4) on the scanning car (1) receives the control signal and makes the scanning car (3) through the scanning control module (3) 1) The gantry formed on the top is driven by the scanning vehicle (1) itself, and moves in parallel across the container under test. The X-rays emitted by the electronic linear accelerator (7) pass through the container under test, and the horizontal cantilever (10) and the vertical cantilever After the detector in (12) receives, it is converted into electric signal input image acquisition module (2), and image acquisition module (2) delivers image signal to the running checker (16) on the control car (14) again and is controlled by computer The display shows the measured results. 2. According to the two-vehicle mobile container detection device described in claim 1, it is characterized in that: the outer vertical link and the lower horizontal link of the vertical support frame (9) formed by the four-bar linkage mechanism are arranged There are hydraulic telescopic cylinders that can prop it up or place it at an angle. 3. The double-vehicle mobile container detection device according to claim 1 or 2, characterized in that: the front end of the scanning vehicle (1) is equipped with a guide wheel mechanism (13), and the guide wheel mechanism (13) includes a connecting plate (131), support plate (132) and guide wheels (135), the connecting plate (131) can be connected with the bottom of the front end of the scanning car (1), and the supporting plate (132) is vertically fixed on the connecting plate (131) to support the plate (132) is two sets of four-bar linkages (134) parallel to each other that are articulated freely at the end of the connecting rod, and the upper-link bottom end suit guide wheel (135) of each four-bar linkage (134) is fixed on the bottom end of each four-bar linkage (134). The hydraulic oil cylinder (133) on the scanning car (1) controls the lifting of each guide wheel (135). When each guide wheel (135) landed, the former front wheel of the scanning car (1) can be jacked up, and the scanning car ( 1) each guide wheel (135) of trailing wheel drives safety preset track walking. 4. The double-vehicle mobile container detection device according to claim 3, characterized in that: on the pallet (6) of the scanning vehicle (14), between the electron linear accelerator (7) and the vertical cantilever (12) A collimator (8) for X-ray shielding is provided.

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