CN115793079B - Radiation inspection device - Google Patents
Radiation inspection device Download PDFInfo
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- CN115793079B CN115793079B CN202111056475.9A CN202111056475A CN115793079B CN 115793079 B CN115793079 B CN 115793079B CN 202111056475 A CN202111056475 A CN 202111056475A CN 115793079 B CN115793079 B CN 115793079B
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- 238000007689 inspection Methods 0.000 title claims abstract description 52
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- 238000003384 imaging method Methods 0.000 description 10
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The present disclosure provides a radiation inspection device comprising: the fixed rack comprises a fixed rack body and a track arranged at the top of the fixed rack body; the movable rack comprises a movable rack body and a traveling device arranged on the movable rack body, and the movable rack is configured to be borne on the fixed rack through the traveling device and can travel back and forth along a track; the scanning device comprises a radiation source and a detector, and the radiation source and the detector are arranged on the movable rack body; and the bottom platform is positioned at the bottom of the fixed frame body and comprises a platform top plate for bearing the detected object, and the fixed frame body, the movable frame body and the platform top plate form a scanning channel of the radiation inspection equipment. The movable frame of the radiation inspection equipment and the scanning device on the movable frame can move stably relative to the fixed frame, so that the acquired image is ensured not to be reduced in quality due to shaking of the scanning device.
Description
Technical Field
The present disclosure relates to the field of radiation imaging technology, and in particular, to a radiation inspection apparatus.
Background
In the field of radiation imaging detection, there are mainly four imaging modes, namely, a perspective radiation inspection device is fixed, and inspected goods/vehicles move to form side radiation imaging; secondly, the perspective radiation inspection equipment is fixed, and the inspected goods/vehicles move to form top vision radiation imaging; thirdly, combining the two modes to form radiation imaging of two visual angles of side perspective and top perspective; and fourthly, the perspective radiation inspection equipment moves, and the inspected goods/vehicles are fixed to form side radiation imaging. The first, second and third modes are all large in occupied area; the fourth mode occupies a small area, but the perspective radiation inspection device walks on the ground, inspection images are easily affected by the flatness of the ground, and civil construction is required to work in cooperation with the radiation inspection device.
Disclosure of Invention
The purpose of the present disclosure is to provide a radiation inspection device, which aims to realize smooth movement of a scanning device, so that an acquired image does not cause quality degradation due to shaking of the scanning device.
The present disclosure provides a radiation inspection apparatus comprising:
the fixed rack comprises a fixed rack body and a track arranged at the top of the fixed rack body;
the movable rack comprises a movable rack body and a traveling device arranged on the movable rack body, and the movable rack is configured to be carried on the fixed rack through the traveling device and can travel back and forth along the track;
the scanning device comprises a radiation source and a detector, and the radiation source and the detector are arranged on the movable rack body; and
the bottom platform is located the bottom of fixed frame body, including the platform roof that is used for bearing the detected object, fixed frame body the movable frame body with the platform roof forms the scanning channel of radiation check out test set.
In some embodiments, the mobile gantry body comprises:
the traveling device is arranged on the top cross beam;
the top ends of the two vertical arms are respectively connected to the two ends of the top cross beam; and
the bottom cross beam is arranged below the platform top plate, and two ends of the bottom cross beam are respectively connected to the bottom ends of the two vertical arms.
In some embodiments of the present invention, in some embodiments,
the radiation source comprises at least one of a top radiation unit and a side radiation unit;
the detector includes at least one of a bottom detection unit and a side detection unit.
In some embodiments of the present invention, in some embodiments,
the radiation source comprises a top radiation unit, and the top radiation unit is arranged on the top beam; and/or
The radiation source comprises a side radiation unit arranged on the vertical arm; and/or
The detector comprises a side detection unit which is arranged on the vertical arm; and/or
The detector comprises a bottom detection unit which is arranged on the bottom cross beam.
In some embodiments, the radiation inspection device further comprises a ramp disposed at an end of the bottom platform, the ramp decreasing in height from the end of the bottom platform to a side distal from the bottom platform.
In some embodiments, the bottom platform further comprises a movable support device comprising a plurality of movable supports and a drive portion disposed in correspondence with the plurality of movable supports, the drive portion being configured to drive the respective movable supports to switch between a support state in which the movable supports are in abutment with the underside of the platform roof and an avoidance state in which the movable supports are spaced apart from the underside of the platform roof, each of the movable supports of the movable support device being individually or in groups switched between the support state and the avoidance state to allow the movable support and the bottom structure thereon to pass between the platform roof and the movable support in the avoidance state when the platform roof is supported by the movable support in the support state.
In some embodiments, the radiation inspection device further comprises:
a sensor configured to detect positional information of the base structure; and
and the controller is in signal connection with the sensor and the driving part and is configured to operate the driving part according to the position information detected by the sensor so as to drive the movable supporting part to switch between a supporting state and an avoiding state.
In some embodiments, the movable support is telescopically arranged and/or the movable support is rotatably arranged to switch between the support state and the avoidance state.
In some embodiments, the movable support comprises a telescoping cylinder, a nut screw assembly, a cam jack assembly, a cam, or a linkage; and/or
The drive section includes an electric motor or a hydraulic motor.
In some embodiments, the bottom platform further comprises a fixed support device, the fixed support device comprises a plurality of fixed support parts respectively supported at two ends of the platform top plate, and the bottom of the movable frame body is positioned between the plurality of fixed support parts at two ends of the platform top plate.
In some embodiments, the bottom platform is fixedly connected to the stationary gantry body.
Based on the radiation inspection equipment provided by the disclosure, when an inspected object such as a vehicle is inspected, the traveling device drives the movable rack body to travel along the track, so that the scanning device on the movable rack body is carried to synchronously move along with the movable rack. Because the track sets up in fixed frame, and not walking on subaerial or set up on the track on ground, consequently, only need firmly set up fixed frame subaerial, running gear can steadily walk on the track, and little influenced by ground roughness, consequently, the movable frame and scanning device on it can both steadily remove for fixed frame, does benefit to the image of guaranteeing to acquire and can not produce the shake and arouse the quality decline because of scanning device.
Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and do not constitute an undue limitation on the disclosure. In the drawings:
fig. 1 is a schematic structural view of a radiation inspection apparatus according to an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional structural view of the radiation inspection device of the embodiment shown in fig. 1.
Fig. 3 is a schematic cross-sectional structural view of a radiation inspection device of another embodiment.
Fig. 4 is a schematic diagram illustrating an operation principle of a movable supporting device of a bottom platform according to an embodiment of the disclosure.
Fig. 5 is a schematic control diagram of a movable supporting device according to an embodiment of the disclosure.
Fig. 6 is a schematic diagram illustrating the working principle of a bottom platform of a supporting platform and a movable supporting device thereof according to another embodiment of the disclosure.
Fig. 7 is a schematic diagram illustrating the working principle of a bottom platform of a supporting platform and a movable supporting device thereof according to another embodiment of the disclosure.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.
In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
As shown in fig. 1 to 5, the embodiment of the present disclosure provides a radiation inspection apparatus including a fixed gantry 1, a movable gantry 2, a scanning device 3, and a bottom stage 4.
The fixed frame 1 comprises a fixed frame body 11 and a track 12 arranged on the top of the fixed frame body 11. The movable frame 2 includes a movable frame body 21 and a traveling device 22 provided on the movable frame body 21, and the movable frame 2 is configured to be carried on the fixed frame 1 by the traveling device 22 and to be capable of traveling reciprocally along the rail 12. The scanning device 3 comprises a radiation source 31 and a detector 32, the radiation source 31 and the detector 32 being arranged on the movable housing body 21. The bottom platform 4 is located at the bottom of the fixed frame body 11 and includes a platform top plate 41 for carrying the object to be inspected. The fixed gantry body 11, the movable gantry body 21, and the table top 41 form a scan path P of the radiation inspection device.
When the radiation inspection device inspects an object to be inspected, such as a vehicle, the traveling device 22 drives the movable rack body 21 to travel along the track 12, so that the scanning device 3 on the movable rack body 21 is carried to synchronously move along with the movable rack 2. Because the track 12 is arranged on the fixed frame 1, instead of walking on the ground or on the track arranged on the ground, the walking device 22 can stably walk on the track 12 only by firmly arranging the fixed frame 1 on the ground and is less influenced by the flatness of the ground, so that the movable frame 2 and the scanning device 3 thereon can stably move relative to the fixed frame 1, and the quality reduction of the acquired image caused by shaking of the scanning device 3 can be avoided. On the other hand, it is also advantageous to reduce or eliminate the costs of civil engineering. Because the scanning device 3 moves reciprocally along with the travelling device 22 and the detected object can be placed on the bottom platform 4 to stand still for scanning inspection, the length of the fixed frame 1 is only longer than that of a single detected object, and compared with the setting mode of the scanning device 3 for fixing the detected object, the size and weight of the radiation inspection equipment can be reduced.
As shown in fig. 1 and 2, in some embodiments, running gear 22 includes a plurality of running wheels 221 and a running drive 222. The plurality of road wheels 221 include a drive wheel drivingly connected to a road drive 222. The travel drive device 222 is, for example, a rotary motor. A transmission, which may include, for example, a speed reducer, may also be provided between the travel drive 22 and the drive wheels. For smooth running of the running gear 22, the running gear may further include guide wheels or the like fitted to the sides of the rail.
As shown in fig. 1, the rail 12 is provided in the left-right direction in fig. 1 (the front-rear direction in fig. 2 and 3), and the scanning path P formed by the fixed frame body 11, the movable frame body 21, and the platform top 41 is also provided in the left-right direction in fig. 1 (the front-rear direction in fig. 2 and 3).
The fixing support is of a frame structure, and can comprise a top cross beam, a top longitudinal beam, a bottom cross beam, a bottom longitudinal beam and a plurality of upright posts. In order to make the frame structure firmer, the top, bottom and transverse sides can be provided with middle longitudinal beams, oblique beams and other structures, and reinforcing structures such as reinforcing plates can be properly arranged.
The term "longitudinal" in the embodiments of the present disclosure refers to the same horizontal direction as the extending direction of the rail 12, and the term "transverse" refers to the horizontal direction perpendicular to the "longitudinal; the term "vertical" refers to a vertical direction.
In order to prevent radiation leakage, shielding structures or the like may also be provided at appropriate positions of the frame structure, such as at both lateral sides.
As shown in fig. 1 to 3, the movable frame body 21 includes a top beam 211, a vertical arm 212, and a bottom beam 213. The running gear 22 is mounted on the top beam 211. The top ends of the two vertical arms 212 are connected to both ends of the top beam 211, respectively. The bottom beam 213 is disposed below the platform top plate 41, and two ends of the bottom beam 213 are respectively connected to bottom ends of the two vertical arms 212. This arrangement makes the movable frame body 21 integrally square, facilitates the structural strength of the movable frame body 21 itself, thereby facilitating reduction of deformation, and facilitates reduction of relative positional variation between the radiation source 31 and the detector 32 of the scanning device 3, thereby facilitating acquisition of stability and accuracy of images.
In the radiation inspection device of some embodiments, the radiation source 31 comprises at least one of a top radiation element 311 and a side radiation element 312; the detector includes at least one of a bottom detection unit 321 and a side detection unit 322.
The radiation inspection device of the embodiment of the present disclosure is beneficial to the scanning unit forming the top view angle, and is also beneficial to the scanning unit forming the side view angle, and the configuration of the scanning apparatus 3 is more flexible.
As shown in fig. 2, wherein the scanning unit of the top view comprises a top radiation unit 311 of the radiation source 31 and a bottom detection unit 321 of the detector 32, may also comprise a side detection unit 322.
As shown in fig. 3, wherein the scanning unit of the side view comprises a side radiation unit 311 of the radiation source 31 and a side detection unit 322 of the detector 32. Depending on the scanning requirements, the radiation inspection device may comprise only a scanning unit of a side view. As shown in fig. 3, in some embodiments, the scanning device 3 may include both a top view scanning unit and a side view scanning unit.
As shown in fig. 1-3, in some embodiments, the radiation source 31 includes a top radiation element 311, the top radiation element 311 being disposed on the top beam 211; and/or the radiation source 31 comprises a side radiation element 312, the side radiation element 312 being arranged on the vertical arm 212; and/or the detector comprises a side detection unit 322, the side detection unit 322 being arranged on the vertical arm 212; and/or the detector comprises a bottom detection unit 321, the bottom detection unit 321 being arranged on the bottom beam 213. As mentioned above, a side detecting unit 322 is generally required to be matched with the side radiating unit 312; the bottom detecting unit 321 can be matched with the top radiating unit 311, and the side detecting unit 322 of the bottom detecting unit 321 can also be arranged at the same time so as to improve the imaging quality.
The side detection unit 322 is mounted within the vertical arm 212. The side detection unit 322 constitutes a side detection arm with the vertical arm 212.
The bottom probe unit 321 is mounted within the bottom beam 213. The bottom detecting unit 321 and the bottom beam 213 constitute a bottom detecting arm (corresponding to a bottom structure).
As shown in fig. 1, in some embodiments, the radiation inspection device may further include a ramp 5 disposed at an end of the bottom platform 4, the ramp 5 gradually decreasing in height from the end of the bottom platform 4 to a side away from the bottom platform 4. The slope table 5 is arranged, so that the upper and lower bottom platforms 4 of the detected object are facilitated. For example, the upper and lower bottom platforms 4 of the vehicle are facilitated, so that the passing rate of the detected object is improved, and the detection efficiency is improved.
The ramp 5 and the bottom platform 4 may be separately, detachably connected or integrally provided.
As shown in fig. 4 and 5, in the radiation inspection apparatus of some embodiments, in order to reduce the influence of the bottom stage on the image quality as much as possible, especially when the bottom detecting unit 321 is provided below the platform top plate 41, the bottom stage 4 further includes a movable supporting device 42, the movable supporting device 42 includes a plurality of movable supporting portions 421 and a plurality of driving portions 422 provided corresponding to the plurality of movable supporting portions 421, the driving portions 422 are configured to drive the corresponding movable supporting portions 421 to switch between a supporting state in which the movable supporting portions 421 are abutted against the bottom surface of the platform top plate 41 and an avoidance state in which the movable supporting portions 421 are separated from the bottom surface of the platform top plate 41, and each movable supporting portion 421 of the movable supporting device 42 is switched between the supporting state and the avoidance state individually or in groups to allow the movable supporting portions 421 and the bottom structure thereon to pass between the platform top plate 41 and the movable supporting portions 421 in the avoidance state when the platform top plate 41 is supported by the movable supporting portions 421 in the supporting state.
Wherein each movable supporting portion 421 may be in driving connection with the same driving portion 422; or each movable supporting part 421 can be divided into a plurality of movable supporting groups, and each movable supporting group is correspondingly provided with one driving part 422; or each movable supporting portion 421 is correspondingly provided with a driving portion 422.
In some embodiments, as shown in fig. 5, to enable automatic switching of the operating states of the plurality of movable supporting parts 421, the radiation inspection device further comprises a sensor 6 and a controller 7. The sensor 6 is configured to detect positional information of the movable housing body 21 and the bottom structure thereon. The controller 7 is in signal connection with the sensor 6 and the driving part 422, and is configured to operate the driving part 422 according to the position information detected by the sensor 6 to drive the movable supporting part 421 to switch between the supporting state and the avoiding state.
The controller 7 may be implemented as a general purpose processor, a programmable logic controller (Programmable Logic Controller, abbreviated as PLC), a digital signal processor (Digital Signal Processor, abbreviated as DSP), an application specific integrated circuit (Application Specific Integrated Circuit, abbreviated as ASIC), a Field-programmable gate array (Field-Programmable Gate Array, abbreviated as FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof for performing the functions described in this disclosure.
The movable supporting portion 421 includes, for example, a telescopic cylinder, a nut screw assembly, a cam rod assembly, a cam or a link structure, etc.; the driving part 422 includes an electric motor, a hydraulic motor, or the like. In addition, a transmission device may be provided between the driving portion and the supporting portion as appropriate. The transmission may perform functions such as speed changing, reversing, synchronizing, etc., such as a gear transmission, a gear rack transmission, a worm gear transmission, etc.
By controlling the working state of each movable supporting device 42 to be in the supporting state or the avoiding state, the barrier-free arrangement and inspection of the bottom detecting unit 321 are realized on the basis of thinner platform top plate 41 and no or fewer reinforcing structures, thereby being beneficial to obtaining a clearer top view scanning image by using a lower-power top radiating unit.
Each radiation unit of the aforementioned radiation source may for example comprise an accelerator, an X-ray machine, an isotope emission device, etc. Each of the detection units of the aforementioned detector may include, for example, a gas detector, a semiconductor detector, a scintillation detector, and the like.
In some embodiments, as shown in fig. 4, the bottom platform 4 further includes a fixed supporting device 43, where the fixed supporting device 43 includes a plurality of fixed supporting portions 431 respectively supported at two ends of the platform top plate 41, and the bottom of the movable frame body 21 is located between the plurality of fixed supporting portions 431 at two ends of the platform top plate 41.
The fixed supporting device 43 is arranged, so that the platform top plate 41 is firmly installed, the position is accurate, and the stable placement of the detected object is ensured.
The working principle of the bottom platform 4 of an embodiment of the present disclosure is described below with reference to fig. 4. Wherein, for illustrating the working principle, the movable supporting means 42 only show the telescopic movable supporting portion 421, the rest not being shown. In fig. 4, the portion where the movable frame body 21 interferes with the movable supporting means 42 only involves the bottom beam 213 of the movable frame body 21 and the bottom detecting unit 321 on the bottom beam 213.
In fig. 4, the operation state switching process of the movable frame body 21 is shown from top to bottom with respect to the movable supporting section 421 at the start of a stroke from the right side to the left side. Fig. 5 shows a control block diagram for controlling the operation of the movable supporting section 421. The movable supporting portion 421 is a telescopic rod, and is in a supporting state of abutting against the lower surface of the platform top plate 41 when it extends upward, and is in an avoidance state of being separated from the lower surface of the platform top plate 41 to avoid the movable frame body 21 and the bottom structure thereon when it retracts downward, in this embodiment, the bottom beam 213 and the bottom detecting arm formed by the bottom detecting unit 321 thereon.
First, the movable frame body 21 starts to move rightward, the sensor 6 sends the detected position information of the bottom structure, specifically, the position information of the bottom beam 213, to the controller 7, and the controller 7 sends an instruction to the driving part 422 connected to the movable supporting part 421 on the left side of the movable frame body 21 according to the position information, the driving part 422 acts to drive the movable supporting part 421 to shrink downward and gradually get away from the bottom surface of the platform top plate 41, so that a gap enough for the bottom beam 213 of the movable frame body 21 to pass through is formed between the movable supporting part 421 and the platform top plate 41 to be in a avoiding state. Since the bottom beam 213 is a semi-enclosed structure with an open top in this embodiment, the bottom detecting unit 321 is located in the inner space of the bottom beam 213, so that the bottom beam 213 can pass through, and the bottom detecting arm can pass through. At the same time, the rest of the support portions 422 maintain their supported state to ensure sufficient supporting force of the platform top plate 41. The bottom beam 213 of the movable housing body 21 then passes through the space. After the controller 7 determines that the bottom beam 213 has passed the movable supporting portion 421 based on the positional information of the sensor 6, it controls the driving portion 422 to drive the movable supporting portion 421 to extend upward until returning to the supporting state. Then the controller 7 drives the corresponding driving part 422 of the next movable supporting part 421 to act so as to switch the next movable supporting part 421 into an avoidance state, after the bottom beam 213 passes, the next movable supporting part 421 extends upwards to return to a supporting state, and so on until the movable frame body 21 moves to the leftmost end of the bottom platform 4, and one scanning is completed. Thus, the movable frame body 21 can move from the right side to the left side without being blocked on the basis of the movable supporting means 42 and the fixed supporting means 43 integrally and stably supporting the platform top plate 41.
Similarly, the movable frame body 21 can move from the left side to the right side without being blocked on the basis of the movable supporting device 42 and the fixed supporting device 43 integrally and stably supporting the platform top plate 41.
In the moving process of the movable frame body 21, the structure between the detected object and the bottom detection unit 321 is always consistent, so that the influence of the platform top plate and the bottom cross beam on the detected image is consistent, the obtained top view image has higher quality, no additional image is generated, and the image recognition speed is increased.
In some examples, the bottom platform 4 is fixedly connected with the stationary gantry body 11. On the one hand, the arrangement is beneficial to the overall stability of the radiation inspection equipment and the consistency of the relative positions of the scanning device, the platform top plate and the inspected object, thereby being beneficial to acquiring high-quality scanning images. In addition, the requirements on the ground can be further reduced, and the rapid arrangement of the radiation inspection equipment is facilitated. The bottom platform 4 and the fixed frame body 11 may be detachably and fixedly connected, or may be integrally provided.
When the radiation inspection device of the embodiment of the disclosure performs inspection, an object to be inspected, such as a vehicle, a container, etc., can be parked on the bottom platform 4 through the ramp 5 and located in the scanning channel P, the scanning device 3 can walk along the track 12 along the arrow direction 1 in the figure along with the movable frame 2 under the driving of the walking device 22, the radiation source 31 emits scanning rays in the walking process, the detector 32 detects the rays transmitted and/or scattered by the object to be inspected, the scanning of the object to be inspected is completed, and a scanning image is generated through the image generator.
Fig. 6 is a schematic diagram illustrating the working principle of a bottom platform of a supporting platform and a movable supporting device thereof according to another embodiment of the disclosure. The bottom deck and the movable supporting apparatus thereof of the embodiment shown in fig. 6 are different from the bottom deck and the movable supporting apparatus thereof shown in fig. 1 to 2 in that the movable supporting portion 421 is rotatably provided and the switching between the supporting state and the avoiding state thereof is achieved by the rotational movement of the movable supporting portion 421. In the embodiment shown in fig. 6, the movable supporting portion 421 of the movable supporting means rotates around a horizontal rotation axis located at the bottom of the movable supporting portion 421 in the supporting state.
The bottom platform of the embodiment shown in fig. 6 and the non-illustrated parts of its movable support means are referred to the description of the previous embodiments.
Fig. 7 is a schematic diagram illustrating the working principle of a bottom platform of a supporting platform and a movable supporting device thereof according to another embodiment of the disclosure. The bottom platform and its movable support according to the embodiment shown in fig. 7 are identical to the bottom platform and its movable support according to fig. 6 in that the movable support 421 is also rotatably provided and the switching between the support state and the retracted state is achieved by a rotational movement of the movable support 421. Unlike the embodiment shown in fig. 6, in the embodiment shown in fig. 7, the movable supporting portion 421 of the movable supporting means rotates about a horizontal rotation axis located in the middle of the upper and lower directions of the movable supporting portion 421 in the supported state.
The bottom platform of the embodiment shown in fig. 7 and the non-illustrated parts of its movable support means are referred to the description of the previous embodiments.
As can be seen from the above description, the radiation inspection device of the embodiments of the present disclosure has at least one of the following advantages:
due to the adoption of the integral frame structure of the fixed frame and the movable frame, the movable frame is supported on the fixed frame and moves along the fixed frame, the scanning device is arranged on the movable frame, and the detected object is parked on the bottom platform, so that the relative positions of the radiation source, the detector and the bottom platform are stable, and the imaging quality is improved.
The radiation inspection device is beneficial to realizing the integral transportation and integral installation of the radiation inspection device and reducing the on-site secondary debugging work, thereby being beneficial to reducing the on-site installation difficulty.
The detected object is parked on the bottom platform, the radiation imaging source moves, the flow is simple, and the operation is convenient.
The mode that the detected goods/vehicles are parked on the bottom platform accords with driving habit of a driver, and flow safety of vehicle detection is improved.
Due to the adoption of the integral frame structure, the structure is simple, the use is flexible and convenient, the cost and the manufacturing cost are low, the occupied space is small, and the maintenance cost is low.
The top perspective scanning function is facilitated to be set, and the dual-view perspective is formed by independent use or combination with the side perspective, so that the image quality of the checked object is improved.
The movable supporting parts are arranged, and each movable supporting part can be switched between a supporting state and an avoiding state, so that the detection signals of the bottom detection unit are not influenced by the bottom platform, the scanning unit for forming a top view angle is facilitated, and the quality of the inspection image for the top view angle is improved.
Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present disclosure and are not limiting thereof; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments of the disclosure or equivalents may be substituted for part of the technical features that are intended to be included within the scope of the claims of the disclosure.
Claims (9)
1. A radiation inspection device, comprising:
the fixed rack (1) comprises a fixed rack body (11) and a track (12) arranged at the top of the fixed rack body (11), and the fixed rack (1) is of a frame type structure;
the bottom platform (4) is positioned at the bottom of the fixed rack body (11), and the bottom platform (4) is fixedly connected with the fixed rack body (11) and comprises a platform top plate (41) for bearing an object to be detected;
the movable rack (2) comprises a movable rack body (21) and a traveling device (22) arranged on the movable rack body (21), the movable rack (2) is configured to be borne on the fixed rack (1) through the traveling device (22) and can travel along the track (12) in a reciprocating manner, the movable rack body (21) comprises a top cross beam (211), a vertical arm (212) and a bottom cross beam (213), the traveling device (22) is arranged on the top cross beam (211), the top ends of the two vertical arms (212) are respectively connected to the two ends of the top cross beam (211) and the two vertical arms (212) are positioned at the inner lateral side of the frame structure, the bottom cross beam (213) is arranged below the platform top plate (41), the two ends of the bottom cross beam (213) are respectively connected to the bottom ends of the two vertical arms (212), the movable rack body (21) integrally forms a square frame, and the fixed rack body (11), the movable rack body (21) and the radiation inspection platform (41) form a radiation channel P; and
scanning device (3), including radiation source (31) and detector (32), radiation source (31) with detector (32) set up in on the movable frame body (21).
2. The radiation inspection device of claim 1, wherein the radiation inspection device comprises a radiation detector,
the radiation source (31) comprises at least one of a top radiation element (311) and a side radiation element (312);
the detector comprises at least one of a bottom detection unit (321) and a side detection unit (322).
3. The radiation inspection device of claim 1, wherein the radiation inspection device comprises a radiation detector,
the radiation source (31) comprises a top radiation unit (311), the top radiation unit (311) being arranged on the top beam (211); and/or
The radiation source (31) comprises a side radiation unit (312), the side radiation unit (312) being arranged on the vertical arm (212); and/or
The detector comprises a side detection unit (322), wherein the side detection unit (322) is arranged on the vertical arm (212); and/or
The detector comprises a bottom detection unit (321), wherein the bottom detection unit (321) is arranged on the bottom cross beam (213).
4. The radiation inspection device according to claim 1, further comprising a ramp (5), the ramp (5) being provided at an end of the bottom platform (4), the ramp (5) decreasing in height from the end of the bottom platform (4) to a side remote from the bottom platform (4).
5. The radiation inspection device according to any one of claims 1 to 4, wherein the bottom platform (4) further comprises a movable support means (42), the movable support means (42) comprising a plurality of movable support portions (421) and a plurality of drive portions (422) provided in correspondence with the plurality of movable support portions (421), the drive portions (422) being configured to drive the respective movable support portions (421) between a support state in which the movable support portions (421) are in abutment with a bottom surface of the platform top plate (41) and an avoidance state in which the movable support portions (421) are separated from the bottom surface of the platform top plate (41), each of the movable support portions (421) of the movable support means (42) being switched between the support state and the avoidance state individually or in groups to allow the movable support portions (421) and bottom structures thereon to pass between the movable support portions (41) and the platform top plate (41) when the platform top plate (41) is supported by the movable support portions (421) in the support state.
6. The radiation inspection device of claim 5, further comprising:
-a sensor (6) configured to detect positional information of the base structure; and
and the controller (7) is in signal connection with the sensor (6) and the driving part (422) and is configured to operate the driving part (422) according to the position information detected by the sensor (6) so as to drive the movable supporting part (421) to switch between a supporting state and an avoiding state.
7. The radiation examination apparatus according to claim 5, characterized in that the movable support (421) is telescopically arranged and/or the movable support is rotatably arranged to switch between the support state and the avoidance state.
8. The radiation inspection device of claim 5, wherein the radiation inspection device,
the movable supporting part (421) comprises a telescopic cylinder, a nut screw assembly, a cam ejector rod assembly, a cam or a connecting rod structure; and/or
The drive section includes an electric motor or a hydraulic motor.
9. The radiation inspection device according to claim 5, characterized in that the bottom platform (4) further comprises a fixed support means (43), the fixed support means (43) comprising a plurality of fixed support portions (431) supported at both ends of the platform top plate (41), respectively, the bottom of the movable gantry body (21) being located between the plurality of fixed support portions (431) at both ends of the platform top plate (41).
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| CN202111056475.9A CN115793079B (en) | 2021-09-09 | 2021-09-09 | Radiation inspection device |
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| CN115793079A (en) | 2023-03-14 |
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